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Epoxy resin shape memory polymer material and method for producing the same

A technology of polymer materials and epoxy resins, applied in the field of shape memory materials, can solve the problems of difficult to achieve a saturated shape memory effect, difficult to adjust the thermal response temperature, slow shape recovery rate, etc., to achieve convenient preparation, fast shape recovery rate, The effect of short thermal response time

Inactive Publication Date: 2008-06-11
GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing shape memory functional polymer materials have the following disadvantages and deficiencies: (1) The thermal response temperature is not easy to adjust; (2) The thermal response time is long, and the shape recovery rate is slow; (3) It is difficult to realize the saturated shape memory effect

Method used

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  • Epoxy resin shape memory polymer material and method for producing the same
  • Epoxy resin shape memory polymer material and method for producing the same
  • Epoxy resin shape memory polymer material and method for producing the same

Examples

Experimental program
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Effect test

Embodiment 1

[0020] Take liquid crystal epoxy resin monomer EP-1 and curing agent 4,4'-diaminodiphenylmethane according to the stoichiometric ratio, dissolve and mix with dichloromethane, pre-cure at 120°C for 5 hours under vacuum, then medium temperature at 160°C Curing for 5 hours and post-curing at 200° C. for 1 hour to obtain an epoxy resin shape memory polymer material. The thermal response temperature of the obtained epoxy resin shape memory polymer material was measured to be 153°C.

Embodiment 2

[0022] Take liquid crystal epoxy resin monomer EP-2 and curing agent methyl hexahydrophthalic anhydride according to stoichiometric ratio, dissolve and mix with dichloromethane, add curing accelerator benzyldimethylamine of 1% of the total mass of monomer and curing agent , pre-cured at 115°C for 6 hours in vacuum, then cured at medium temperature at 160°C for 5 hours, and post-cured at 200°C for 1 hour to obtain an epoxy resin shape memory polymer material. Its thermal response temperature is 134°C.

Embodiment 3

[0024] Take liquid crystal epoxy resin monomer EP-14 and curing agent methyl hexahydrophthalic anhydride according to stoichiometric ratio, dissolve and mix with dichloromethane, add curing accelerator DMP-30 of 1% of the total mass of monomer and curing agent, vacuum Pre-cure at 50°C for 12 hours, then cure at medium temperature at 160°C for 5 hours, and post-cure at 200°C for 1 hour to obtain an epoxy resin shape memory polymer material. Its thermal response temperature is 54°C.

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Abstract

The invention relates to a new epoxy resin shape memory macromolecule material and a relative preparation method, wherein the material contains liquid crystal epoxy resin monomer and curing agent at stoichiometry, which may further contains curing accelerator of 0-2% consumption of the total accounts of the liquid crystal epoxy monomer and curing agent. Compared with prior shape memory material, the inventive material has the advantages that (1), the thermal responsible temperature can be adjusted by adjusting the side chain and substituted chain of the liquid crystal epoxy monomer or by selecting curing agent, (2), the heat response time is short and the shape recover is rapid, (3), the product can realize saturated shape memory effect, (4) the product has simple preparation and clear structure.

Description

technical field [0001] The invention belongs to the technical field of shape memory materials, in particular to an epoxy resin type shape memory polymer material and a preparation method thereof. Background technique [0002] Shape memory refers to the phenomenon that a product with an initial shape can be restored to its original shape after being deformed and fixed by external stimulus means such as heating. [0003] Since the 1960s, shape memory materials have attracted worldwide attention due to their unique properties, and related research has also developed rapidly. Shape memory materials include shape memory alloys (SMA), shape memory ceramics (SMC) and shape memory polymers (SMP). Compared with SMA, SMP not only has large deformation, easy shaping, and easy adjustment of shape response temperature, but also has the characteristics of heat preservation, good insulation performance, no rust, easy coloring, printable, light weight and low price. But its disadvantages ...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08K5/3445
Inventor 梁利岩吕满庚
Owner GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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