Ultraviolet-cured hard coating and application thereof

The invention discloses an ultraviolet-cured hard coating and an application thereof. The ultraviolet-cured hard coating comprises a transparent supporting body and a scratch-proof coating coated on the transparent supporting body; the scratch-proof coating comprises the following components in part by weight: 5 to 90 parts of light-cured prepolymer, 5 to 90 parts of thinning agent, 1 to 10 parts of photoinitiator, 0 to 80 parts of active thinning agent, 0 to 20 parts of inorganic nanopadding and 0 to 18 parts of aid. By the invention, the defects that the conventional hard coating is not hard enough, the scratch resistance and the wear resistance are limited, the flexibility is relatively low and the like are overcome; and the ultraviolet-cured hard coating has relatively low surface energy, relatively good antifouling effect, high strength, relatively good scratch resistance and wear resistance, and excellent adhesion, flexibility and transparence.

Ultraviolet-cured hard coating and application thereof

Split type sliding block of solid rocket engine

The invention relates to a split type sliding block of a solid rocket engine, which comprises a sliding block base arranged along the radial direction of a combustion chamber shell, a sliding block base body is sleeved on the outer side of the sliding block base, an assembly hole matched with the sliding block base in appearance is formed in the center of the sliding block base body, and a tile-shaped groove tightly matched with the combustion chamber shell is formed in the bottom of the sliding block base body. A missile launcher sliding rail is arranged at the top of the sliding block base body, a plurality of base connecting holes are formed in the periphery of the sliding block base, a plurality of base body connecting holes are formed in the periphery of the sliding block base body, and the base body connecting holes are connected with the base connecting holes through fasteners. A split structure is adopted, the sliding block base body can freely select a high-strength alloy material ...

UV-heat dual-curing polyurethane coating, and preparation method and application thereof

The invention provides an UV-heat dual-curing polyurethane coating, and a preparation method and application thereof. The UV-heat dual-curing polyurethane coating is composed of an UV curing system and a heat curing system. The UV curing system comprises, by weight, 40%-70% of a prepolymer, 10%-30% of an active monomer and 1%-10% of a photoinitiator. The heat curing system comprises, by weight, 50%-80% of an adhesive and 20%-50% of a cross-linking agent. The coating disclosed by the invention solves the problem that the adhesive property of the functional coating with a PET membrane is bad. Compared with the prior art, the used UV curing system and the heat curing system are both a polyurethane system, the kinds of the polyurethane system are various, the comprehensive performances are relatively good than those of other systems and the various polyurethane systems are capable of satisfying many performances of an optical film, and also the UV curing system and the heat curing system are ...

Solid rocket engine long exhaust nozzle and outer heat insulation device thereof

The invention relates to a long exhaust nozzle of a solid rocket engine and an outer heat insulation device of the long exhaust nozzle. The outer heat insulation device comprises a front supporting frame, a rear supporting frame, an inner heat insulation cylinder and an outer heat insulation cylinder. The front supporting frame is provided with a long exhaust nozzle front section mounting hole, and an inner heat insulation cylinder front end mounting groove and an outer heat insulation cylinder front end mounting groove are formed in the outer side of the long exhaust nozzle front section mounting hole; the rear supporting frame is provided with a long exhaust nozzle rear section mounting hole, and an inner heat insulation cylinder rear end mounting groove and an outer heat insulation cylinder rear end mounting groove are formed in the outer side of the long exhaust nozzle rear section mounting hole; an inner baffle and an outer baffle are arranged on the outer side of the long exhaust ...

Metal wire drawing-imitating color steel plate film

The invention provides a metal wire drawing-imitating color steel plate film which comprises a transparent PET wire drawing film layer, a primer layer, a printing ink layer, and a hot melt adhesive resin coating; metal wire drawing-imitating patterns are engraved on the upper surface of the transparent PET wire drawing film layer; the side of the transparent PET wire drawing film layer engraved with the metal wire drawing-imitating patterns is coated with the primer layer; the printing ink layer is printed on the upper surface of the primer layer; the upper surface of the printing ink layer is coated with the hot melt adhesive resin coating. The metal wire drawing-imitating patterns of the invention are distinct in lines, vivid in effect, and elegant in color; vacuum aluminized layers, aluminium foil, or vacuum aluminized films are omitted; the production procedures are simplified; and the cost is reduced. The metal wire drawing-imitating color steel plate film is suitable for the production ...

Experimental device for obtaining strain compensation coefficient and operation and coefficient obtaining method thereof

The invention relates to the technical field of communication optical cable parameter measurement, in particular to an experimental device for obtaining a strain compensation coefficient and an operation and coefficient obtaining method thereof. The test device comprises a monitor, a first buckling piece, a second buckling piece, a reinforcing piece and a weighting assembly. The monitor is used for acquiring the Brillouin frequency shift of the optical fiber; the first buckling piece is provided with at least two first connecting parts which are arranged at intervals; the second buckling piece is connected with the first connecting part so as to form a buckling gap for crimping the optical fiber part with the first buckling piece; the plurality of reinforcing members are respectively connected with the second buckling members in a one-to-one correspondence manner, each reinforcing member is connected with the first buckling member, and each reinforcing member is also provided with a second ...

Metal wire drawing-imitating decoration film

The invention provides a metal wire drawing-imitating decoration film which comprises a PET base film, a primer layer, a metal wire drawing-imitating pattern layer, and a printing ink layer; the primer layer is printed on the surface of the PET base film; the metal wire drawing-imitating pattern layer is printed on the surface of the primer layer; and the printing ink layer is printed on the surface of the metal wire drawing-imitating pattern layer. The decoration film of the invention is few in production procedures, low in manufacturing cost, and distinct in the metal wire drawing-imitating pattern, has different glossiness effects such as matt, common, highlight, and the like, has high combining strength with various sheet materials, has good aging resistance and long service life, is widely used in surface decoration of color steel plates, integrated furred ceilings, bureau doors, cabinets, and industrial products, and has very good anti-rust, protective, decorative, and beatifying ...