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Shape memory polymer foam material and preparation method and application thereof

A technology of memory polymer and foam material, which is applied in the field of shape memory polymer foam material and its preparation, can solve the problems of shape memory polymer hardness and shaping temperature unsuitable for human wear, and achieve product experience improvement, not easy to crack, and controllable good sex effect

Inactive Publication Date: 2019-08-30
深圳市康勋新材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a shape memory polymer and its preparation method to solve the technical problem that the existing shape memory polymer hardness and setting temperature are not suitable for human body wear

Method used

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  • Shape memory polymer foam material and preparation method and application thereof
  • Shape memory polymer foam material and preparation method and application thereof
  • Shape memory polymer foam material and preparation method and application thereof

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preparation example Construction

[0054] On the other hand, the embodiment of the present invention provides the preparation method of the shape memory polymer foam material, which includes the following steps:

[0055] S01: heating and mixing polyester diol, polyether diol, crosslinking agent, and foaming agent with a mass ratio of 50: [1-15]: [0.1-1]: [0.4-4];

[0056] S02: Adding a curing agent and a catalyst with a mass ratio of [1.25-4.5]:0.1 to the mixed treatment product for mixed treatment, heating and reacting to obtain the polymer material.

[0057] In the step S01, the cross-linking and foaming processes are carried out synergistically, and the cross-linking process enables the polymer precursor to form a certain strength, so that the foaming process can be controlled. The heating temperature is 50-80° C., and controlling the temperature within an appropriate range can make the cross-linking process controllable on the one hand, taking into account the reaction rate and the stability of the reaction...

Embodiment 1

[0064] Select 50 parts of molecular weight 3000 polyhexamethylene adipate diol as the main raw material, 5 parts of polyethylene glycol with a molecular weight of 400 as the secondary raw material, add 0.5 part of pentaerythritol as the crosslinking agent, and 0.5 part of deionized water as the chemical Blowing agent, 0.5 parts of dichloromethane is a chemical blowing agent; The above-mentioned raw materials are heated to 50 ℃ and mixed uniformly; Then adding 8 parts of isocyanate mass fractions is liquefied MDI (trade name Bayer CD-C) of 29 wt% for curing agent and 0.1 part of dibutyltin dilaurate as a catalyst, after rapid stirring for 30 minutes, pour the mixture into a mold, and place the mixture in an oven at 60°C for 10 hours to react to prepare the flexible foam. Such as figure 1 As shown, the prepared flexible polyurethane foam has a crystalline melting peak with low crystallinity at about 45°C, and a crystallization melting peak with relatively complete crystallizatio...

Embodiment 2

[0066] Select 50 parts of polybutylene adipate diol with a molecular weight of 4000 as the main raw material, 10 parts of polypropylene glycol with a molecular weight of 600 as the secondary raw material, add 1 part of glycerol as a crosslinking agent, and 0.25 parts of deionized water as a chemical Foaming agent, 0.25 parts of n-heptane is a chemical foaming agent; the above raw materials are heated to 70 ° C and mixed uniformly; Butyl tin is used as a catalyst. After stirring rapidly for 30 minutes, the mixture is poured into a mold, and the mixture is placed in an oven at 70° C. for 8 hours to react to prepare the soft foam. Such as image 3 As shown, the prepared flexible polyurethane foam can be easily compressed into a compact material at room temperature (about 25°C); and when placed in an oven at 80°C for 2 minutes, the compressed compact material will gradually return to fluffy The foam structure (such as Figure 4 Shown), the Shao A hardness is about 40, and the de...

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Abstract

The invention relates to a shape memory polymer foam material. The shape memory polymer foam material is characterized by being prepared from the following raw materials in parts by mass through polymerization foaming: 80 parts of polyester glycol, 8-24 parts of polyether glycol, 0.16-1.6 parts of a cross-linking agent, 0.64-6.4 parts of a foaming agent, 2-5.4 parts of a curing agent, and 0.16 part of a catalyst. Compared with the prior art, on one hand, a shape memory polymer involved in the invention has appropriate crystallization melting temperature, namely shaping temperature, and relatively low deformation recovery temperature; on the other hand, the hardness of the shape memory polymer involved in the invention is low, and discomfort feeling does not exist during wearing; no burdenis added during wearing because of low density; monomers of the shape memory polymer contain a large amount of ether, the curing agent reacts to form a large amount of urethano, good skin affinity isrealized, and products prepared prom the material are suitable for wearing; finally, the shape memory polymer ensures the shape recovery function, the elasticity and good mechanical property under thesynergistic effect of the foaming agent, the cross-linking agent, the curing agent and the like, the defects of cracking and the like are not easy to generate, and product experience is further improved.

Description

technical field [0001] The invention belongs to the field of intelligent materials, and in particular relates to a shape-memory polymer foam material and its preparation method and application. Background technique [0002] At present, individualized needs are becoming more and more common, and individualized needs also form higher and higher requirements for materials. Many products in the current market are usually standard products with standardized design and manufacture, but there are many individual differences among consumers. Sometimes these products cannot well adapt to individual needs, which may bring a lot of discomfort or poor effect to consumers. , For example, if the earplugs are not suitable for the ear canal or ear shape, it will cause discomfort to the ears, or the sound insulation effect of the earplugs is poor, etc.; when swimming, the nasal congestion will cause discomfort if it is too large, and water will enter if it is too small. Therefore, many cons...

Claims

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Application Information

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IPC IPC(8): C08G18/66C08G18/32C08G18/40C08G18/42C08G18/48C08J9/08C08J9/14C08G101/00
CPCC08G18/3281C08G18/4018C08G18/4238C08G18/4825C08G18/4833C08G18/4854C08G18/6611C08G18/6622C08G2101/00C08G2280/00C08J9/08C08J9/141C08J9/145C08J2203/02C08J2203/142C08J2375/04
Inventor 陈少军卓海涛黄晓婷陈明刘教实程兵
Owner 深圳市康勋新材科技有限公司
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