Bidirectional shape memory polymer composite material and preparation method thereof

A memory polymer and composite material technology, applied in chemical instruments and methods, rubber layered products, synthetic resin layered products, etc., can solve the problems of less polymer material reports, and achieve good electrical insulation and heat preservation effects , Sufficient raw materials and easy processing

Inactive Publication Date: 2008-04-23
THE HONG KONG POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In recent years, research on the development and application of shape memory materials has paid much attention at home and abroad, and the patents are also increasing rapidly, but there are few reports on polymer materials with two-way shape memory effect.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] raw material

[0027] a) Shape memory resin: shape memory polyurethane, self-made in the laboratory; its main index is: T r =41~52℃, the shape fixation rate is above 95%, and the shape recovery rate is above 94%;

[0028] b) Elastomer resin: thermoplastic polyurethane, Yantai Huada Chemical Industry Co., Ltd., T-1195PC;

[0029] c) Adhesive: Neoprene adhesive, preferably immediately available from Guangzhou Huayue Adhesive Chemical Co., Ltd.

[0030] Preparation:

[0031] A polyurethane film with superior shape memory function was prepared in advance. The preparation method of the membrane: firstly adopt the bulk method or the solution method to prepare the shape memory polyurethane (see Chinese patents CN200410049347, CN200410049303, CN200410002552); then use DMF to prepare a 30% polyurethane solution, pour the membrane, and dry it at 80°C for 48h. That is, a shape-memory polyurethane film was obtained, with a film thickness of about 2.0 mm.

[0032] Then the resu...

Embodiment 2

[0036] raw material

[0037] a) Shape memory fiber: Polyurethane shape memory fiber, self-made in the laboratory; its main indicators are: fineness 10-30D, transition temperature T r =41~52℃, the shape fixation rate is above 95%, and the shape recovery rate is above 94%;

[0038] b) Elastic fiber: Spandex (other elastic fibers such as polyethylene fiber, polypropylene fiber, polyester fiber, etc. can also be used), Yantai Spandex Co., Ltd., T-115, fineness 70D;

[0039] c) Adhesive: polyurethane adhesive, Rongneng, Huangpu District, Guangzhou City, Guangdong Province.

[0040] Preparation:

[0041] According to the Chinese patent CN200410049347 or CN200410049303, the shape memory polyurethane fiber with superior shape memory performance is prepared. Then the obtained shape-memory polyurethane fiber is heated up to 80°C, and the tensile deformation is 20%-200%; then the temperature is lowered to room temperature and the deformation is fixed, and it is taken out and placed fo...

Embodiment 3

[0044] raw material

[0045] a) Shape memory resin: polyurethane shape memory resin (other shape memory materials such as cross-linked polyethylene, polynorbornene, trans polyisoprene, styrene-butadiene copolymer, etc. can also be applied), laboratory Self-made; its main indicators are: Tr = 42-52°C, the shape fixation rate is over 95%, and the shape recovery rate is over 94%;

[0046] b) Thermoplastic elastomer: thermoplastic polyurethane elastomer (other elastomer materials such as SBS resin, propylene-butylene copolymer, hard rubber, silicone rubber elastomer, etc. can also be applied), Yantai Huada Chemical Industry Co., Ltd., T- 1195PC;

[0047] c) Adhesive: neoprene adhesive, available from Guangzhou Huayue Adhesive Chemical Co., Ltd. immediately.

[0048] Preparation:

[0049] Polyurethane sheets with superior shape memory function have been prepared in advance. The preparation method of the plate is: preparing shape memory polyurethane resin by bulk method or solut...

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Abstract

The present invention relates to a polymer composite material with bidirectional shape memory effect and its preparation method. It is characterized by that said polymer composite material is made up by using polymer material with shape memory function and elastric material which can be actively reverted through a certain superimposing and binding process. Said polymer composite material has bidirectional shape memory effect. The shape memory reversion temperature range of said polymer composite material is large, the different shape memory polymers can be selected and used, the bidirectionalshape memory function with different shape reversion temperature can be obtained. The bidirectional shape memory property also can be obtained by regulating thickness of shape memory polymer and thickness of elastic material. Besides, said polymer composite material has good corrosion resistance, electroinsulating property and heat-insulating effect.

Description

technical field [0001] The invention relates to a special functional composite material and its preparation technology, specifically a method for preparing a polymer composite material with a two-way shape memory function; it belongs to the field of new functional materials and intelligent materials. Background technique [0002] In the mid-1980s, people put forward the concept of smart materials (Smart Materials or Intelligent Material System): smart materials imitate living systems, can sense environmental changes and can change one or more of their performance parameters in real time, and make desired , Composite materials or composite materials that can adapt to the changed environment. Smart material is a complex material system integrating material and structure, intelligent processing, execution system, control system and sensing system. Its design and synthesis span almost all high-tech disciplines. Shape memory material is a widely studied intelligent material, wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/06B32B25/08B32B7/12B32B37/12B32B38/18
Inventor 胡金莲陈少军
Owner THE HONG KONG POLYTECHNIC UNIV
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