High-wear-resistance TPU/silica gel composite material and preparation method thereof
Technical Field The invention belongs to the field of the manufacture of the artificial leather, in particular to a high wear-resistant TPU/silica gel composite material and its preparation method. Background Art As China's economy high-speed development, leather products of increasing demand, increasingly high grade. The automobile interior leather has been widely applied in passenger automobile, transportation in the interior of the automobile. The automobile interior with leather, the best choice for the dermis, but leather in its own serious environmental pollution in the production process, the content of heavy metal is easy to exceed standard, in the course of processing in the interior components and high yield is low, its price is expensive, difficult to low and medium-grade passenger car acceptable; and people gradually attaches great importance to the protection of the environment, in promoting environmental protection and energy saving, sustainable development today, people have also begun to develop leather fabric to replace animal leather, in order to avoid damage to the wild animal and destruction of the natural environment. Artificial leather is also called the leather or rubber, is PVC and PU and minicars artificial material. It is in the woven fabric or non-woven fabric vuill, by various different formulation of PVC and PU foaming or film covering manufactured and processed, can be according to different strength, abrasion resistance, and withstands the color, gloss, the requirements made of pattern processing, with the variety of colors, good waterproof performance, mouthed neat, and the price is relatively high and the utilization rate of the dermis characteristic of cheap. , a vehicle door panel, automobile seat fabric, instrument panel, the inner wall of the carriage, the roof of the vehicle, a steering wheel handle cover and other parts, the main non-woven coins with the polyvinyl chloride, polyurethane and the like composite material. The existing automobile interior poor abrasion resistance, fire resistance and poor performance. The areas that require the development of a high wear-resistant TPU/silica gel composite material and method of preparing the same, having a wear-resistant, flame-retardant effect. Content of the invention The purpose of this invention is to provide a TPU/silica gel composite material, The TPU/silica gel composite material comprises a base cloth of the stack, the hot melt adhesive layer 1st, TPU layer, 2nd hot melt adhesive layer and silica gel; the 1st and 2nd hot-melt adhesive hot melt adhesive layer is a hot melt adhesive layer TPU. The present invention provides of the TPU/silica gel composite material using the wear resistance of the silica gel, and the TPU layer of flame-retardant, the two superimposed, obtain high wear resistance, and the appearance is better composite material. The hot-melt adhesive bond strength is large, the effect of raising the TPU/silica gel composite material the role of the interlaminar bonding firmness. Preferably, the silica gel layer has a thickness of 0.01 - 0.10 mm, for example can be 0.02 mm, 0 . 03 mm, 0 . 05 mm, 0 . 07 mm, 0 . 09 mm and the like. The thickness of the silica gel layer can be guaranteed is that play a role in the wear-resistant effect, but also does not affect the function of the light transmission performance. Preferably, the 2nd hot melt adhesive layer thickness is 0.02 - 0.05 mm, for example can be 0.03 mm, 0 . 04 mm and the like. 2nd hot-melt adhesive is matched with the thickness of the silica gel layer and the thickness of the TPU layer, so that the silica gel can be firmly with the TPU layer combination, and does not affect the transparency of the material. Preferably, the TPU layer thickness is 0.01 - 0.08 mm, for example can be 0.02 mm, 0 . 03 mm, 0 . 04 mm, 0 . 05 mm, 0 . 06 mm, 0 . 07 mm and the like. With the arrangement of the TPU layer the thickness of the silica gel and the hot melt adhesive layer with thickness, so that the effect of the hardness, and the light transmittance suitable. Preferably, the 1st hot-melt adhesive has a thickness of 0.11 - 0.20 mm, for example can be 0.12 mm, 0 . 13 mm, 0 . 14 mm, 0 . 15 mm, 0 . 16 mm, 0 . 17 mm, 0 . 18 mm, 0 . 19 mm and the like. Preferably, the thickness of the states the kieb level is 1.0 - 3.0 mm, for example can be 1.1 mm, 1.2 mm, 1.5 mm, 1.8 mm, 2.2 mm, 2.5 mm, 2.7 mm, 2.9 mm and the like. Preferably, the hot melt adhesive layer 1st TPU and 2nd TPU hot-melt adhesive layer according to weight of the raw material for preparing the raw material components including the following: As an example, the present invention the preparation of TPU hot-melt adhesive in the raw materials, the polyester polyol can be 36 a, 37 a, 38 a, 39 a, 40 a, 41 a, 43 a or 44 parts and the like; diisocyanate can be 32 a, 35 a, 38 a, 40 a, 42 a, 45 a, 48 parts or 50 parts and the like; the catalyst is 0.2 parts, 0.4 parts, 0.6 parts, 0.8 parts, 1.0 parts, 1.2 parts, 1.5 parts or 1.8 parts and the like; chain extender can be a 2 a, 3 a, 5 a, 8 a, 9 a, 10 a, 12 a or 14 parts and the like. Preferably, the polyester polyol include sebacic acid polyester polyol, preferably the molecular weight is 1000 - 2000 (for example 1100, 1200, 1300, 1400, 1500, 1600, 1700, 1800, 1900 and the like) of sebacic acid polyester polyol. Preferably, the sebacic acid polyester polyol of the preparation method is: will be sebacic acid, terephthalic acid with ethylene glycol, then adding , heating up to 120 - 200 °C (for example 130 °C, 140 °C, 150 °C, 160 °C, 170 °C, 180 °C, 190 °C and the like) and the polycondensation reaction to obtain the sebacic acid polyester polyol. Preferably, the sebacic acid and terephthalic acid in a molar ratio of 1:2 - 3 (for example 1: 2.2, 1: 2.4, 1: 2.6, 1: 2.8, 1: 2.9 and the like). Preferably, the glycol and sebacic acid molar ratio of 3.5 - 4.5: 1, for example 3.6: 1, 3.7: 1, 3.8: 1, 3.9: 1, 4.0: 1, 4.1: 1, 4.2: 1, 4.3: 1, 4.4: 1 and the like. Preferably, the adding amount of the is 3 × 10-3 -4 × 10-3 Mol/mol sebacic acid. Preferably, the diisocyanate includes a diphenylmethane diisocyanate or toluene diisocyanate. Sebacic acid polyester polyol from decanedioic acid and terephthalic acid esterification at the same time, containing a suitable proportion of short chain acid and aromatic acid, aromatic group is regular in structure, excellent crystallinity, can improve mechanical performance, but too high crystalline lead to poor cohesiveness, after compounded sebacic acid, can improve the bonding performance. Preferably, the 1st catalyst comprises P-toluenesulfonic acid, February dibutyl tin, glycol antimony, tetra isopropyl titanate in any of the 1 or at least 2 kinds of combined. Typical but non-restrictive of combination of February 2nd catalyst such as dibutyl tin with glycol antimony, glycol antimony with the tetra isopropyl titanate. Preferably, said chain extender comprises 1, 6 - hexanediol, methyl propylene glycol, 1, 4 - butanediol in any of the 1 or at least 2 kinds of combined. Typical but non-restrictive of the chain extender combination like 1, 6 - hexanediol with methyl propylene glycol, 1, 6 - hexanediol with 1, 4 - butanediol. Preferably, the hot-melt adhesive layer TPU preparation material further comprises 0.1 - 1 parts by weight (for example 0.2 parts by weight, 0.3 parts by weight, 0.4 parts by weight, 0.5 parts by weight, 0.6 parts by weight, 0.7 parts by weight, 0.8 parts by weight, 0.9 parts by weight and the like) of the 1st anti-oxidant. Preferably, the anti-oxidant comprises antioxidant 1st 245, anti-oxidant 1135, anti-oxidant PUR67, anti-oxidant PUR68 any 1 or at least 2 kinds of combined. Preferably, the hot-melt adhesive layer TPU preparation material further comprises 0.1 - 5 parts by weight of a flame retardant, for example 0.5 parts, 1.0 parts, 1.5 parts, 2.0 parts, 2.5 parts, 3.0 parts, 3.5 parts, 4.0 parts or 4.5 parts and the like. Preferably, the flame retardant according to weight percentage comprises: 20 - 30 wt % of dimethyl phosphite, 30 - 40 wt % ammonium polyphosphate, 30 - 40 wt % of pentaerythritol. In the flame retardant, the quality of the methyl percentage content can be 20%, 22%, 24%, 26%, 28% or 30% and the like, said poly-ammonium phosphate quality percentage content is 30%, 32%, 34%, 36%, 38% or 40% and the like, the cationic pentaerythritol quality percentage content is 30%, 32%, 34%, 36%, 38% or 40% and the like. Preferably, the hot-melt adhesive layer TPU preparation material further comprises 0.1 - 5 parts by weight of a tackifying resin, for example 0.5 parts, 1.0 parts, 1.5 parts, 2.0 parts, 2.5 parts, 3.0 parts, 3.5 parts, 4.0 parts or 4.5 parts and the like. Preferably, the an adhesion resin includes polyethylene - ethylene-vinyl acetate copolymer, terminal hydroxy thermoplastic polyester, hydrogenated rosin resin in any of the 1 or at least 2 kinds of combined. Preferably, the raw material for preparing the TPU layer according to weight of raw material components including the following: The thermoplastic polyurethane particles according to weight of the raw material for preparing comprises the following components: Preferably, the poly hexamethylene carbonate diol has a weight average molecular weight is 1000 - 2000, if heavy weight average molecular weight of 1100, 1200, 1300, 1400, 1500, 1600, 1700, 1800, 1900 or 2000 and the like. Preferably, the selected from oleic amide, erucic acid amide or myocardial infarction amide any 1 or at least 2 kinds of combined; typical but non-restrictive combination such as oleic acid amide and erucic acid amide, oleic acid amide and myocardial infarction amide and the like. Preferably, the antioxidant is selected from the 2nd two stearyl base season pentaerythritol phosphite, triphenyl phosphate, dibutyl hydroxy toluene BHT, N, double-N' - [[3 - (3, 5) - tert-butylphenol -4 - hydroxy phenyl] propionyl] hexandiamine any 1 or at least 2 kinds of combined; typical but non-restrictive combination such as di-stearyl base season pentaerythritol phosphite and triphenyl phosphate, triphenyl phosphate and dibutyl hydroxy toluene and the like. Preferably, the anti-ultraviolet medicinal preparation is selected from UV - P, UV - 328 or UV - B83 in any of the 1 or at least 2 kinds of combined; typical but non-restrictive UV - P and UV - 328, UV - P and UV - B83 and the like. Preferably, the 2nd catalyst comprises P-toluene sulfonic acid, dibutyl tin February, glycol antimony, tetra isopropyl titanate in any of the 1 or at least 2 kinds of combined. Typical but non-restrictive of combination of February 2nd catalyst such as dibutyl tin with glycol antimony, glycol antimony with the tetra isopropyl titanate. Preferably, the silica gel is a liquid silicon rubber of solidification. Preferably, the liquid silicon rubber comprises dealcoholization of condensed liquid silicone rubber. Preferably, the states the kieb level including the superfine fiber non-woven fabric, preferably the weight per unit area is 50 - 400 the g/m2 (For example can be 100 g/m2 , 120 G/m2 , 150 G/m2 , 180 G/m2 , 200 G/m2 , 220 G/m2 , 250 G/m2 , 280 G/m2 , 300 G/m2 , 320 G/m2 , 350 G/m2 , 380 G/m2 Or 400 g/m2 And the like) of the superfine fiber non-woven fabric. Preferably, the hot-melt adhesive of hot-melt adhesive obtained by casting. After the curtain coating process for preparing hot-melt adhesive, the hot-melt adhesive is pressed with the base cloth, on the one hand with the base cloth can improve the hot-melt adhesive bond strength, reducing the thickness of the hot-melt adhesive layer, on the other hand can reduce the hot-melt adhesive spraying preparation prior art air pollution caused by the hot-melt adhesive. The purpose of this invention is to provide an end to one of the polyurethane leather preparation method, the preparation method comprises the following steps: (1) Preparation of TPU hot melt adhesive film: TPU hot-melt adhesive in accordance with the raw materials for preparing the formulation is prepared by mixing a raw material, screw extrusion to obtain the TPU hot-melt adhesive particle, will the TPU hot-melt adhesive particle through the single-screw extruder in accordance with the temperature is 180 - 220 °C (for example 185 °C, 190 °C, 195 °C, 200 °C, 205 °C, 210 °C, 215 °C or 220 °C and the like), the die temperature is 180 - 210 °C (for example 180 °C, 185 °C, 190 °C, 195 °C, 200 °C, 205 °C or 210 °C and the like) of the conditions of the casting by the TPU hot melt adhesive film, will the TPU hot-melt adhesive film with the base cloth on the composite of the lower die, to form the 1st composite film; (2) TPU layer composite stage: in accordance with the preparation of the TPU layer raw material formulation is prepared by mixing a raw material, screw extrusion to obtain the TPU film particles, will the TPU film particles through the single-screw extruder in accordance with the temperature is 180 - 220 °C (for example 185 °C, 190 °C, 195 °C, 200 °C, 205 °C, 210 °C, 215 °C or 220 °C and the like), the die temperature is 180 - 210 °C (for example 180 °C, 185 °C, 190 °C, 195 °C, 200 °C, 205 °C or 210 °C and the like) of the casting by the TPU layer conditions; the TPU layer with the 1st composite membrane to pressure composite, forming 2nd composite film; (3) Silica gel composite stage: the liquid silicon rubber is evenly coated on the surface of the TPU layer 2nd of the composite membrane, by 60 - 80 °C solidification, get the TPU/silica gel composite material. Compared with the prior art, the invention has the following advantages: (1) The invention provides a highly wear-resistant TPU/silica gel composite material of good wear resistance, in 9 kPa pressure, grinding 1000 carried forward wear phenomena is not obvious, and light-scattering more silica gel material has been markedly improved, fire retardance is good. (2) The invention through reducing the thin silicon layer to the proper thickness, with the hot-melt adhesive layer, realize TUP layer firmly bonded with, and casting method to avoid bubble generating, so that the material can be obtained under the premise of good wear resistance, has obtained the good light scattering. Mode of execution By the specific embodiment below to further clarify the technical scheme of the invention. The technicians of this field should be clear, the embodiment merely help to understand the invention, should not be regarded as to the invention of the specific constraints. Embodiment 1 A TPU/silica gel composite material, comprises sequentially laminated 1.5 mm thick base cloth of the superfine fiber non-woven fabric (weight per unit area is 200 g/m2 ), 0.15 Mm thickness of the hot melt adhesive layer 1st, 0.05 mm thick TPU layer, 0.03 mm thick 2nd hot melt adhesive layer and 0.05 mm thick silica gel layer. The TPU hot-melt adhesive layer according to weight of the raw material for preparing the raw material components including the following: The method for the preparation of polyester polyols: will be 1 µM sebacic acid, 2.5 µM terephthalic acid with 4.0 µM glycol mix, then add 0.003 µM , heating up to 160 °C the polycondensation reaction to obtain the sebacic acid polyester polyol (weight average molecular weight of 1500); The flame-retardant according to percentage by weight comprises: 30 wt % dimethyl phosphite, 35 wt % ammonium polyphosphate, 35 wt % pentaerythritol; The PU layer preparation method comprises: the PU resin liquid is coated on the adhesive is dried on the TPU layer; said PU resin of the dielectric fluid formulation is as follows: polyurethane resin 85 parts by weight; dimethyl formamide 22 parts by weight; ethyl acetate 40 parts by weight; surface active agent sulfated castor oil 3 parts by weight; antibacterial agent dodecyl dimethyl benzyl ammonium bromide 1.0 parts by weight; toner 5 parts by weight. The TPU layer by casting obtained after mixing raw materials selected, according to weight of the raw material components including: thermoplastic polyurethane particles 93 parts by weight; amide 0.05 parts by weight; antioxidant dibutyl hydroxy toluene 0.5 parts by weight; an anti-UV agent UV - B83 0.5 parts by weight; the thermoplastic polyurethane particles according to weight of raw material components including the following: weight average molecular weight of 1500 of the macromolecule methylene carbonate diol 35 parts; 1, 5 - 15 parts; benzylidene diisocyanate 25 parts; 1, 4 - butanediol 18 parts; catalyst 0.5 parts. Preparation method comprises the following steps: (1) Hot-melt adhesive film stage TPU: TPU hot melt adhesive material will be obtained through tape casting with the base cloth on the TPU hot melt adhesive film composite of the lower die, to form the 1st composite film; (2) TPU film composite stage: the thermoplastic polyurethane particles and auxiliary agent through a single screw extruder, in accordance with the screw temperature of 200 °C, die temperature is 190 °C conditions of the class extends TPU film, with the 1st composite membrane to pressure composite, forming 2nd composite film; (3) Silica gel composite stage: the liquid silicon rubber (Dow Corning HV1510/40) uniformly coating it on the surface of the TPU layer 2nd of the composite membrane, by 60 - 80 °C solidification, get the TPU/silica gel composite material. Embodiment 2 A TPU/silica gel composite material, comprises sequentially laminated 3.0 mm thick base cloth of the superfine fiber non-woven fabric (weight per unit area is 400 g/m2 ), 0.11 Mm thick 1st hot-melt adhesive layer, 0.01 mm thick TPU layer, 0.02 mm thick 2nd hot-melt adhesive and 0.01 mm thick silica gel layer. The TPU hot-melt adhesive layer according to weight of the raw material for preparing the raw material components including the following: The method for the preparation of polyester polyols: will be 1 µM sebacic acid, 2.5 µM terephthalic acid with 4.0 µM glycol mix, then add 0.003 µM , raising the temperature to 200 °C the polycondensation reaction to obtain the sebacic acid polyester polyol (weight average molecular weight of 2000); The flame-retardant according to percentage by weight comprises: 20 wt % dimethyl phosphite, 40 wt % ammonium polyphosphate, 40 wt % pentaerythritol; The PU layer preparation method comprises: the PU resin liquid is coated on the adhesive is dried on the TPU layer; said PU resin of the dielectric fluid formulation is as follows: polyurethane resin 90 parts by weight; dimethyl formamide 25 parts by weight; ethyl acetate 50 parts by weight; surface active agent sulfated castor oil 5 parts by weight; antibacterial agent dodecyl dimethyl benzyl ammonium bromide 2 parts by weight; toner 10 parts by weight. The TPU layer by casting obtained after mixing raw materials selected, according to weight of the raw material components including: thermoplastic polyurethane particles 95 parts by weight; one of lubricate erucic acid amide 1.0 parts by weight; triphenyl phosphite antioxidant 1.0 parts by weight; an anti-UV agent UV - 328 1.0 parts by weight; the thermoplastic polyurethane particles according to weight of raw material components including the following: weight average molecular weight is 2000 macromolecule of methylene carbonate diol 40 parts; 1, 5 - 20 parts; benzylidene diisocyanate 30 parts; 1, 4 - butanediol 25 parts; catalyst 1.0 parts. Preparation method comprises the following steps: (1) Hot-melt adhesive film stage TPU: TPU hot melt adhesive material will be obtained through tape casting with the base cloth on the TPU hot melt adhesive film composite of the lower die, to form the 1st composite film; (2) TPU film composite stage: the thermoplastic polyurethane particles and auxiliary agent through a single screw extruder, in accordance with the screw temperature of 200 °C, die temperature is 190 °C conditions of the class extends TPU film, with the 1st composite membrane to pressure composite, forming 2nd composite film; (3) Silica gel composite stage: the liquid silicon rubber (Dow Corning HV1510/40) uniformly coating it on the surface of the TPU layer 2nd of the composite membrane, by 60 - 80 °C solidification, get the TPU/silica gel composite material. Embodiment 3 A TPU/silica gel composite material, comprises sequentially laminated 0.1 mm thick base cloth of the superfine fiber non-woven fabric (weight per unit area is 200 g/m2 ), 0.20 Mm thick of hot melt adhesive layer 1st, 0.08 mm thick TPU layer, 0.05 mm thick 2nd hot melt adhesive layer and 0.10 mm thick silica gel layer. The TPU hot-melt adhesive layer according to weight of the raw material for preparing the raw material components including the following: The method for the preparation of polyester polyols: will be 1 µM sebacic acid, 2.5 µM terephthalic acid with 4.0 µM glycol mix, then add 0.003 µM , heating up to 160 °C the polycondensation reaction to obtain the sebacic acid polyester polyol (weight average molecular weight of 1500); The flame-retardant according to percentage by weight comprises: 25 wt % dimethyl phosphite, 35 wt % ammonium polyphosphate, 35 wt % pentaerythritol; The PU layer preparation method comprises: the PU resin liquid is coated on the adhesive is dried on the TPU layer; said PU resin of the dielectric fluid formulation is as follows: polyurethane resin 85 parts by weight; dimethyl formamide 22 parts by weight; ethyl acetate 40 parts by weight; surface active agent sulfated castor oil 3 parts by weight; antibacterial agent dodecyl dimethyl benzyl ammonium bromide 1 parts by weight; toner 5 parts by weight. The TPU layer by casting obtained after mixing raw materials selected, according to weight of the raw material components including: thermoplastic polyurethane particles 93 parts by weight; amide 0.05 parts by weight; antioxidant dibutyl hydroxy toluene 0.5 parts by weight; an anti-UV agent UV - B83 0.5 parts by weight; the thermoplastic polyurethane particles according to weight of raw material components including the following: weight average molecular weight of 1500 of the macromolecule methylene carbonate diol 35 parts; 1, 5 - 15 parts; benzylidene diisocyanate 25 parts; 1, 4 - butanediol 18 parts; catalyst 0.5 parts. Preparation method comprises the following steps: (1) Hot-melt adhesive film stage TPU: TPU hot melt adhesive material will be obtained through tape casting with the base cloth on the TPU hot melt adhesive film composite of the lower die, to form the 1st composite film; (2) TPU film composite stage: the thermoplastic polyurethane particles and auxiliary agent through a single screw extruder, in accordance with the screw temperature of 200 °C, die temperature is 190 °C conditions of the class extends TPU film, with the 1st composite membrane to pressure composite, forming 2nd composite film; (3) Silica gel composite stage: the liquid silicon rubber (Dow Corning HV1510/40) uniformly coating it on the surface of the TPU layer 2nd of the composite membrane, by 60 - 80 °C solidification, get the TPU/silica gel composite material. Embodiment 4 With the embodiment 1 the difference is that, for the ring on the artificial leather texture polyurethane leather, comprising sequentially laminated 1.5 mm thick base cloth of the superfine fiber non-woven fabric (weight per unit area is 200 g/m2 ), 0.25 Mm thickness of the hot melt adhesive layer 1st, 0.10 mm thick TPU layer, 0.07 mm thick 2nd hot melt adhesive layer and 0.13 mm thick silica gel layer. Embodiment 5 With the embodiment 2 is different from, said vehicle for artificial leather texture polyurethane leather, comprising sequentially laminated 0.01 mm thick base cloth of the superfine fiber non-woven fabric (weight per unit area is 200 g/m2 ), 0.10 Mm thick 1st hot-melt adhesive layer, 0.01 mm thick TPU layer, 0.01 mm thick 2nd hot-melt adhesive and 0.01 mm thick silica gel layer. Performance test: The embodiment TPU/silica gel composite material obtained by the performance test as follows: (1) Abrasion strength: in 9 KPa under the pressure of the, grinding 1000 carried forward observation abrasion phenomena, embodiment 1 - 3 are non-abrasion phenomenon, embodiment 4 - 5 with a small amount of abrasion phenomena; (2) Flame-retardant: embodiment 1 - 5 is the UL94V - 0. The applicant's statement, the present invention through the above-mentioned embodiments of the present process method of the invention, but the invention is not limited to the above-mentioned process steps, that does not mean that the invention must rely on the above mentioned process steps before they can be implemented. Belongs to the technical field of technical personnel should understand, any improvements to this invention, the selected raw materials of the present invention equivalent replacement and the addition of auxiliary components, such as the choice of the specific mode, all fall in the scope of protection of the invention and within the scope of the disclosed. The invention relates to a TPU/silica gel composite material. The TPU/silica gel composite material comprises a base cloth layer, a first hot melt adhesive layer, a TPU layer, a second hot melt adhesive layer and a silica gel layer which are successively stacked; and the first hot melt adhesive layer and the second hot melt adhesive layer are both TPU hot melt adhesive layers. The provided high-wear-resistance TPU/silica gel composite material is good in wear resistance, and after the high-wear-resistance TPU/silica gel composite material is ground by 1000 revolutions under the pressure of 9kPa, wear is not obvious, moreover, light scattering of the high-wear-resistance TPU/silica gel composite material is obviously higher than that of a silica gel material, and the flame retardance is good. The silica gel layer is thinned until the thickness of the silica gel layer is suitable, is matched with the hot melt adhesive layers, and firmly adheres to the TPU layer, air bubbles are avoided due to tape casting, and therefore, the material has good light scattering property on the premise of good wear resistance. 1. A TPU/silica gel composite material, characterized in that the TPU/silica gel composite material comprises a base cloth of the stack, the hot melt adhesive layer 1st, TPU layer, 2nd hot melt adhesive layer and silica gel; The 1st and 2nd hot-melt adhesive hot melt adhesive layer is a hot melt adhesive layer TPU. 2. TPU/silica gel composite material according to Claim 1, characterized in that the silica gel layer has a thickness of 0.01 - 0.10 mm; Preferably, the 2nd hot melt adhesive layer thickness is 0.02 - 0.05 mm; Preferably, the TPU layer thickness is 0.01 - 0.08 mm; Preferably, the 1st hot-melt adhesive has a thickness of 0.11 - 0.20 mm; Preferably, the thickness of the states the kieb level is 1.0 - 3.0 mm. 3. TPU/silica gel composite material according to Claim 1, characterized in that the hot-melt adhesive 1st TPU and 2nd TPU hot-melt adhesive layer according to weight of the raw material for preparing the raw material components including the following: The polyester polyol include sebacic acid polyester polyol, preferably the molecular weight is 500 - 800 of sebacic acid polyester polyol; Preferably, the sebacic acid polyester polyol of the preparation method is: will be sebacic acid, terephthalic acid with ethylene glycol, then adding , heating up to 120 - 200 °C the polycondensation reaction to obtain the sebacic acid polyester polyol; Preferably, the sebacic acid and terephthalic acid in a molar ratio of 1:2 - 3; Preferably, the glycol and sebacic acid molar ratio of 3.5 - 4.5: 1; Preferably, the adding amount of the is 3 × 10-3 -4 × 10-3 Mol/mol sebacic acid. 4. TPU/silica gel composite material according to Claim 3, characterized in that the comprises diphenyl methane diisocyanate or toluene diisocyanate; Preferably, the 1st catalyst comprises P-toluenesulfonic acid, February dibutyl tin, glycol antimony, tetra isopropyl titanate in any of the 1 or at least 2 kinds of combination; Preferably, said chain extender comprises 1, 6 - hexanediol, methyl propylene glycol, 1, 4 - butanediol in any of the 1 or at least 2 kinds of combined. 5. TPU/silica gel composite material according to Claim 3 or 4, characterized in that the hot-melt adhesive layer TPU preparation material further comprises 0.1 - 1 parts by weight of antioxidant 1st; Preferably, the anti-oxidant comprises antioxidant 1st 245, anti-oxidant 1135, anti-oxidant PUR67, anti-oxidant PUR68 any 1 or at least 2 kinds of combination; Preferably, the hot-melt adhesive layer TPU preparation material further comprises 0.1 - 5 parts by weight of a flame retardant; Preferably, the flame retardant according to weight percentage comprises: 20 - 30 wt % of dimethyl phosphite, 30 - 40 wt % ammonium polyphosphate, 30 - 40 wt % of pentaerythritol; Preferably, the hot-melt adhesive layer TPU preparation material further comprises 0.1 - 5 parts by weight of a tackifying resin; Preferably, the an adhesion resin includes polyethylene - ethylene-vinyl acetate copolymer, terminal hydroxy thermoplastic polyester, hydrogenated rosin resin in any of the 1 or at least 2 kinds of combined. 6. -5 To one of the TPU/silica gel composite material according to Claim 1, characterized in that the raw materials for preparing TPU layer according to weight of raw material components including the following: The thermoplastic polyurethane particles according to weight of the raw material for preparing comprises the following components: Preferably, the poly hexamethylene carbonate diol has a weight average molecular weight is 1000 - 2000; Preferably, the selected from oleic amide, erucic acid amide or myocardial infarction amide any 1 or at least 2 kinds of combination; Preferably, the antioxidant is selected from the 2nd two stearyl base season pentaerythritol phosphite, triphenyl phosphate, dibutyl hydroxy toluene BHT, N, double-N' - [[3 - (3, 5) - tert-butylphenol -4 - hydroxy phenyl] propionyl] hexandiamine any 1 or at least 2 kinds of combination; Preferably, the anti-ultraviolet medicinal preparation is selected from UV - P, UV - 328 or UV - B83 in any of the 1 or at least 2 kinds of combined. Preferably, the 2nd catalyst comprises P-toluene sulfonic acid, dibutyl tin February, glycol antimony, tetra isopropyl titanate in any of the 1 or at least 2 kinds of combined. 7. -6 To one of the TPU/silica gel composite material according to Claim 1, characterized in that the silica gel is a liquid silicon rubber of solidification; Preferably, the liquid silicon rubber comprises dealcoholization of condensed liquid silicone rubber; Preferably, the states the kieb level including the superfine fiber non-woven fabric, preferably the weight per unit area is 50 - 400 the g/m2 The superfine fiber non-woven fabric; Preferably, the hot-melt adhesive of hot-melt adhesive obtained by casting. 8. TPU/silica gel composite material preparation method as in any one of Claims 1-7, characterized in that said preparation method comprises the following steps: (1) Preparation of TPU hot melt adhesive film: TPU hot-melt adhesive in accordance with the raw materials for preparing the formulation is prepared by mixing a raw material, screw extrusion to obtain the TPU hot-melt adhesive particle, will the TPU hot-melt adhesive particle through the single-screw extruder in accordance with the temperature is 180 - 220 °C, die temperature is 180 - 210 °C conditions of the hot melt adhesive film casting by the TPU, the TPU with the hot melt adhesive to the base of the lower die composite, the composite membrane formed 1st; (2) TPU layer composite stage: in accordance with the preparation of the TPU layer raw material formulation is prepared by mixing a raw material, screw extrusion to obtain the TPU film particles, will the TPU film particles through the single-screw extruder in accordance with the temperature is 180 - 220 °C, die temperature is 180 - 210 °C conditions to obtain the TPU layer casting; the TPU layer with the 1st composite film to pressing the composite, the composite membrane formed 2nd ; (3) Silica gel composite stage: the liquid silicon rubber is evenly coated on the surface of the TPU layer 2nd of the composite membrane, by 60 - 80 °C solidification, get the TPU/silica gel composite material.