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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 14. Отображено 14.
04-07-2023 дата публикации

Polybutylene material with improved crystallization and application

Номер: CN116376180A
Автор: TU YAPENG, LYU AILONG, QIN XIAOMEI, OU JIAJIE
Принадлежит:

The invention discloses a crystallization-improved polybutylene material and application thereof. The crystallization-improved polybutylene material comprises the following raw materials in parts by weight: 100 parts of polybutylene and 1-10 parts of PB-based master batch, the PB-based master batch is prepared from the following raw materials in parts by weight: 100 parts of PB-based master batch carrier resin, 10 to 100 parts of master batch component resin, 6 to 40 parts of dispersing component and 0.5 to 10 parts of nucleating agent. The invention discloses a polybutylene material with improved crystallization, which can be used for producing a polybutylene pipe with improved crystallization, shortens the crystal transformation time while ensuring the performance of the pipe, and has important significance for production practice.

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Номер записи: 1
18-07-2023 дата публикации

PPR (pentatricopeptide repeats) pipe with chlorine resistance as well as preparation method and application thereof

Номер: CN116444898A
Автор: LYU AILONG, XIE BIMAO, CHEN HUIDONG, HU SHANSHAN, OU JIAJIE
Принадлежит:

The invention discloses a PPR pipe with chlorine resistance and a preparation method and application thereof, and relates to the technical field of plastic pipes. The polypropylene random copolymer comprises the following components in parts by weight: 85-95 parts of polypropylene random copolymer, 5-15 parts of an anti-chlorine polymer, 0.05-1 part of an antioxidant and 0.5-2 parts of a lubricant, the anti-chlorine polymer is grafted copolymer sodium styrylsulfonate modified polypropylene. A grafted copolymer sodium styrylsulfonate modified polypropylene is added as an anti-chlorine polymer, on one hand, a benzene ring structure is introduced to increase steric hindrance, attack of active chlorine to a polypropylene molecular chain is reduced, and the polypropylene is effectively blocked and protected; on the other hand,-SO3Na serves as an electron withdrawing group, the activity of aromatic rings is reduced, the aromatic rings are prevented from being substituted by active chlorine, the ...

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Номер записи: 2
29-08-2023 дата публикации

Heat-resistant reinforced PPR pipe and preparation method thereof

Номер: CN116653366A
Автор: LYU AILONG, QIN XIAOMEI, CHENG XIAOXUE, CHEN SI, OU JIAJIE, ZHENG JIAXI, ZHAO JIALE
Принадлежит:

The invention discloses a heat-resistant reinforced PPR pipe and a preparation method thereof, and belongs to the field of plastic pipes. The heat-resistant reinforced PPR pipe comprises an inner layer, a middle layer and an outer layer which are sequentially arranged from inside to outside, each of the inner layer and the outer layer comprises the following raw materials in parts by weight: PPR resin and polysiloxane modified maleic anhydride grafted polypropylene, and the middle layer comprises the following raw materials in parts by weight: PPR resin and reinforced copolymer modified glass fibers; and the reinforced copolymer is a copolymer of hydroxyl acrylate and styrene. The preparation method comprises the following steps: respectively melting to obtain an inner-layer melt, a middle-layer melt and an outer-layer melt, enabling the inner-layer melt, the outer-layer melt and the middle-layer melt to flow into a three-layer co-extrusion mold, and carrying out composite co-extrusion, ...

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Номер записи: 3
25-04-2023 дата публикации

Polypropylene-based master batch, polypropylene pipe and preparation method of polypropylene-based master batch

Номер: CN116003911A
Автор: TU YAPENG, LYU AILONG, LUO WENXING, LIAO JIANXUN
Принадлежит:

The invention discloses a polypropylene-based master batch, a polypropylene pipe and a preparation method of the polypropylene-based master batch, and belongs to the technical field of polymer pipes. The polypropylene-based master batch provided by the invention comprises the following raw materials in parts by mass: 150-400 parts of polypropylene resin, 5-30 parts of PP wax, 5-30 parts of a dispersing agent, 1-5 parts of an acid acceptor, 0.5-6 parts of an alpha nucleating agent and 0.5-9 parts of a beta nucleating agent. The polypropylene-based master batch provided by the invention has excellent compatibility and dispersibility when being subsequently used as a pipe component to be mixed with polypropylene randon copolymer; meanwhile, a heating device introduced in a production line is matched in the preparation of the pipe, so that the beta crystal form forming and growing time is prolonged, and the excellent heat resistance, creep resistance, strength, toughness and pressure resistance ...

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Номер записи: 4
11-07-2023 дата публикации

Forming device, assembling device, forming method and assembling method of pipe

Номер: CN116408655A
Автор: LIANG YONGJIE, JIN JIJING, QIN XIAOMEI, LYU AILONG, SHEN HONGBING, HUANG ZHIRUO
Принадлежит:

The invention discloses a forming device, an assembling device, a forming method and an assembling method of a pipe, and belongs to the field of plastic forming. The forming device comprises a pipe wall machining part and an end machining part. When the plurality of pressure head sub-plates are in a separated state, the end part heating column penetrates through the pressure head passing opening and then extends into the end part of the pipe; and when the multiple pressure head sub-plates are in an attached state, the second pipeline supporting part is used for driving one end of the pipe to press the pressure head groove, so that the end, extending into the pressure head groove, of the pipe is sealed and formed. The assembling device is combined with a circumferential pressing device and the forming device; according to the forming method, a bullet head structure and a supporting table structure are formed; according to the assembling method, the pipe formed by the assembling device is ...

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Номер записи: 5
30-05-2023 дата публикации

Composition for polyethylene material, polyethylene material and preparation method

Номер: CN116178816A
Автор: BAI JING, LYU AILONG, HUANG LIANBING
Принадлежит:

The invention discloses a composition for a polyethylene material, the polyethylene material and a preparation method. The composition for the polyethylene material comprises the following components in parts by weight: 0.5-5 parts of an antibacterial agent, 0.1-0.5 part of an anion adsorbent, 0.1-0.5 part of an ultraviolet light absorber, 0.1-0.5 part of a light stabilizer, 0.1-0.5 part of a main antioxidant and 0.2-1 part of an auxiliary antioxidant. The antioxidant, the light stabilizer, the ultraviolet light absorber and the anion adsorbent are matched for use, the PE-RT material is subjected to blending modification, the long-acting light aging performance, the antibacterial performance, the chlorine resistance and the long-term mechanical performance of the material are guaranteed, and the anti-ultraviolet antibacterial chlorine-resistant polyethylene material for the water purifier PE-RT pipe is prepared.

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Номер записи: 6
09-06-2023 дата публикации

Polyethylene flame-retardant pipe

Номер: CN116239832A
Автор: ZHAO XIALONG, LU WEIHUA, LYU AILONG, ZHONG PEIYONG
Принадлежит:

The polyethylene flame-retardant pipe comprises a flame-retardant layer, and the flame-retardant layer is prepared from the following raw materials in parts by weight: 70 to 80 parts of HDPE (High-Density Polyethylene), 1 to 2.5 parts of aliphatic amide, 3 to 5 parts of flame retardant, 3 to 11.1 parts of expansible graphite, 2.5 to 4.9 parts of metal hydroxide, 1 to 1.5 parts of granulation softener, 0.5 to 1 part of peroxide, 0.5 to 3 parts of crosslinking aid, 0.5 to 1 part of antioxidant and 0.5 to 1 part of light stabilizer. The polyethylene flame-retardant pipe material comprises the flame-retardant layer, the flame-retardant layer takes high-density polyethylene as a main material, and the flame retardant, the expansible graphite, the metal hydroxide and the antioxidant are added in a matched manner and are uniformly dispersed in a system under the assistance of special interface lubrication of aliphatic amide; meanwhile, the flame retardant, the metal hydroxide and the expansible ...

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Номер записи: 7
07-07-2023 дата публикации

High-speed extrusion type anti-scale PE-RT (polyethylene of raised temperature resistance) floor heating pipe and preparation method thereof

Номер: CN116396553A
Автор: LYU AILONG, QIN XIAOMEI, CHENG XIAOXUE, CHEN SI, OU JIAJIE, ZHENG JIAXI, ZHAO JIALE
Принадлежит:

The invention discloses a high-speed extrusion type anti-scale PE-RT (polyethylene of raised temperature resistance) floor heating pipe and a preparation method thereof, and relates to the field of pipes. The floor heating pipe comprises a PE-RT inner layer, a bonding layer and an oxygen blocking outer layer, and the PE-RT inner layer comprises raw material PE-RT resin, a heat stabilizer, heat conduction filler and an anti-scaling agent; wherein the anti-scale agent comprises double-end epoxy polysiloxane, polyester glycol, polyfluoroalkyl glycol and a tertiary amine catalyst, the molar sum of the polyester glycol and the polyfluoroalkyl glycol does not exceed the weight sum of the double-end epoxy polysiloxane, and the use amount of the tertiary amine catalyst is 1-5% of the weight sum of the polysiloxane, the polyester glycol and the polyfluoroalkyl glycol. The PE-RT inner layer is small in surface roughness and has the oxygen barrier effect, the excellent oxygen barrier performance is ...

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Номер записи: 8
09-05-2023 дата публикации

Transparent PVC electrical conduit and preparation method thereof

Номер: CN116082768A
Автор: LYU AILONG, QIN XIAOMEI, ZHENG JIAXI, ZHAO JIALE, CHENG XIAOXUE, CHEN SI, OU JIAJIE
Принадлежит:

The invention discloses a transparent PVC electrical conduit and a preparation method thereof, and belongs to the field of plastic pipe fittings. The transparent PVC electrical conduit comprises the following raw materials in parts by weight: 100 parts of PVC resin; 5.5 to 8 parts of a toughening modifier; 2.5 to 5 parts of EVA (ethylene vinyl acetate); 1-3 parts of a heat stabilizer; 0.5 to 1.5 parts of a lubricant; the toughening modifier is a copolymer of an acrylate monomer, an acrylamide monomer and vinyl acetate; the VA content of the EVA is 30 to 35 percent. The preparation method comprises the following steps: mixing the PVC resin, the toughening modifier, the EVA, the heat stabilizer and the lubricant, stirring at a high speed while heating to obtain a premix, and then extruding, molding and cooling the premix to obtain the transparent PVC electrical conduit. The preparation method has the advantage that the PVC electrical conduit with good transparency and toughness is obtained ...

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Номер записи: 9
08-08-2023 дата публикации

Pipe extrusion die

Номер: CN116551962A
Автор: WANG YONGBIAO, LYU AILONG, LU WEIHUA, ZHONG PEIYONG
Принадлежит:

The embodiment of the invention provides a pipe extrusion die which comprises a die single body, a pipe via hole is formed in the die single body, the pipe via hole comprises a transition section and a stable section which are sequentially arranged in the pipe moving direction, and the inner diameter of the transition section is gradually reduced to be matched with the diameter of the stable section in the pipe moving direction; each die single body comprises a core die and a mouth die, a conical annular surface runner is arranged between the core die and the mouth die, the conical annular surface runner and the pipe passing hole are coaxially arranged, the end, with the larger diameter, of the conical annular surface runner is a feeding end, the end, with the smaller diameter, of the conical annular surface runner is a discharging end, and the feeding end is connected with a feeding channel. According to the pipe extrusion die, the pipe via hole is formed in the middle of the die single ...

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Номер записи: 10
08-08-2023 дата публикации

Plastic special-shaped tubular part and manufacturing method thereof

Номер: CN116554530A
Автор: JIN JIJING, LIANG YONGJIE, LIANG FENG, QIN XIAOMEI, LYU AILONG
Принадлежит:

The invention relates to the technical field of preparation of pipe fittings, and discloses a plastic special-shaped tubular part and a manufacturing method thereof. The manufacturing method of the plastic special-shaped tubular part comprises the following steps: carrying out hot water treatment on a pipe blank of which the raw material is silane crosslinked polyethylene until the crosslinking degree reaches 30-40%, and then carrying out a hot working deformation process to obtain the formed special-shaped tubular part, and continuously boiling and crosslinking the special-shaped tubular part until the crosslinking degree is greater than or equal to 70%, thereby finishing the shaping. The manufacturing method is simple and low in cost, and the plastic special-shaped tubular part with good performance can be manufactured. The special-shaped tubular part disclosed by the invention is manufactured by adopting the manufacturing method provided by the invention, and has the characteristic of ...

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Номер записи: 11
16-05-2023 дата публикации

Blending modified PA6 material as well as preparation method and application thereof

Номер: CN116120737A
Автор: BAI JING, LYU AILONG, HUANG LIANBING
Принадлежит:

The invention discloses a blending modified PA6 material as well as a preparation method and application thereof, and relates to the technical field of plastic pipes. A blending modification technology is adopted, PA6, a compatible flexibilizer, a flame retardant, mineral fibers, a nanofiller, an antioxidant and a lubricant are used as raw materials, and the long-term creep resistance and short-term high pressure-bearing performance of the material are improved on the basis of flame retardance by designing the proportion of all components; the pipe material can be used as a high-pressure spraying and atomizing pipe material in a large-scale farm scene for long-term safe use.

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Номер записи: 12
18-04-2023 дата публикации

Silencing PVC drain pipe and preparation method thereof

Номер: CN115975312A
Автор: LYU AILONG, QIN XIAOMEI, ZHENG JIAXI, ZHAO JIALE, CHENG XIAOXUE, CHEN SI, OU JIAJIE
Принадлежит:

The invention discloses a silencing PVC drainage pipe and a preparation method thereof, and relates to the technical field of pipes. The silencing PVC drain pipe comprises raw materials of PVC resin, a heat stabilizer, a lubricant, a flexibilizer and polyurethane foam particles. The preparation method of the polyurethane foam particles comprises the following steps: S1, uniformly mixing phthalic anhydride polyester polyol, a foam stabilizer, sodium bicarbonate and water to obtain a component A; and S2, sequentially adding acetic acid and diisocyanate into the component A, reacting for 20-30 minutes, adding a chain extender, an organic metal catalyst and an amine catalyst, continuously reacting, transferring into a spherical mold, standing for more than 2 hours, demolding, and crushing to obtain the polyurethane foam particles with the particle size range of 0.2-0.5 mm. The silencing drainage pipe has the advantages of being good in silencing performance and high in impact toughness.

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Номер записи: 13
08-08-2023 дата публикации

Self-heating material, self-heating polyethylene pipe and processing method thereof

Номер: CN116554669A
Автор: LIANG YONGJIE, JIN JIJING, LYU AILONG, LIANG FENG
Принадлежит:

The invention discloses a self-heating material, a self-heating polyethylene pipe and a processing method thereof, and the self-heating material comprises the following raw materials: 0.8-1.2 parts by weight of carbamide, 1-2.5 parts by weight of cyanamide, 1-2.5 parts by weight of ammonium thiocyanate, 4.5-5.5 parts by weight of ethylene glycol polyoxyethylene ether, 90-110 parts by weight of aluminum powder, 28-32 parts by weight of magnesium powder and 3-7 parts by weight of activated carbon. When the self-heating material is applied to the polyethylene pipe, the temperature loss of fluid in the pipe can be reduced, and compared with a conventional heat preservation layer, the heat preservation effect is better.

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Номер записи: 14