Epoxy resin with shape memory property and preparation method thereof

A technology for epoxy resin and aliphatic epoxy resin, which is applied in the field of epoxy resin and its preparation, can solve the problems of difficult to achieve saturated shape memory effect, poor mechanical and thermal properties, difficult adjustment of thermal response temperature, etc. Good memory effect, good mechanical and thermal properties, and mature molding process

Inactive Publication Date: 2014-02-05
DONGGUAN JIEYUE SHENGSHI SPORTS GOODS
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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. Poor mechanical and thermal properties; 2. The thermal response temperature is not easy to adjust; 3. The thermal response time is long and the shape recovery rate is slow; 4. Difficult to achieve saturation shape memory effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0041] The present invention also discloses a preparation method of the above-mentioned epoxy resin with shape memory, which includes the following steps: heating and melting the curing agent in the amount described above, and mixing it with the bisphenol A epoxy resin in the amount described at the same temperature , stir evenly, then add the amount of aliphatic epoxy resin, monohydric aliphatic amine and curing accelerator, then cure at 90~110°C for 2~4h, then raise the temperature to 140~155°C for 3~5h, and get Epoxy resin with shape memory.

[0042] Therefore, the thermal response temperature of the epoxy resin of the present invention can be adjusted conveniently, by changing the content of the monobasic aliphatic amine and the alkyl length or the content of epoxy resin in the formula, can easily adjust the influence temperature; The present invention adopts existing Polymers and composites are manufactured and processed, the molding process is mature, and the cost is low...

Embodiment 1

[0044] The epoxy resin with shape memory of the present embodiment comprises the following raw materials in parts by weight: 80 parts of bisphenol A type epoxy resin E-51, 20 parts of polyethylene glycol diglycidyl ether, 20.6 parts of monovalent n-alkane Amine, 14.4 parts of 1,6-hexanediamine, 0.1 part of dimethylimidazole.

[0045] The preparation method of the above-mentioned epoxy resin with shape memory includes the following steps: heating the amount of 1,6-hexanediamine to 102°C to melt, and mixing with the amount of bisphenol A at the same temperature Mix epoxy resin E-51, stir evenly, then add the amount of polyethylene glycol diglycidyl ether, monovalent n-alkane amine and dimethylimidazole, then cure at 90°C for 2 hours, then heat up to 140°C After curing for 3 hours, an epoxy resin with shape memory was obtained.

Embodiment 2

[0047] The epoxy resin with shape memory of the present embodiment includes the following raw materials in parts by weight: 67 parts of bisphenol A type epoxy resin E-44, 33 parts of polypropylene glycol diglycidyl ether, 35.5 parts of monovalent n-alkane amine, 20.3 parts of m-xylylenediamine, 2.2 parts of diisopropylimidazole.

[0048] The preparation method of the above-mentioned epoxy resin with shape memory comprises the following steps: heating the m-xylylenediamine of the amount to 105° C. for melting, and mixing with the bisphenol A type epoxy resin of the amount at the same temperature E-44 mixed, stirred evenly, and then added the amount of polypropylene glycol diglycidyl ether, monovalent n-alkane amine and diisopropylimidazole, then cured at 110°C for 4h, and then heated to 155°C for 5h to obtain Epoxy resin with shape memory.

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Abstract

The invention relates to the technical field of high polymer materials, and particularly relates to an epoxy resin with the shape memory property and a preparation method thereof. The epoxy resin with the shape memory property comprises the following raw materials in parts by weight: 100 parts of epoxy resin, 20.6-35.5 parts of sebacic monobasic amine, 14.4-20.3 parts of curing agent and 0.1-2.2 parts of curing catalyst, wherein the epoxy resin is bisphenols A epoxy resin and aliphatic epoxy resin blended resin. The influence temperature can be conveniently adjusted by changing the content and the alkyl group length of the sebacic monobasic amine or the content of the epoxy resin in the formula; the epoxy resin with the shape memory property is short in heat response time and fast in shape recovery rate and has a good shape memory effect after the shape memory repeatedly circulates; the forming process of the epoxy resin with the shape memory property is mature and low in cost; the epoxy resin with the shape memory property has relatively good mechanical property and thermal property, good chemical resistance and the characteristics of super toughness, impact resistance, wear resistance, low friction coefficient and the like and is difficult to deform, melt and burn at a high temperature environment.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to an epoxy resin with shape memory 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. 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, printing, light weight and low price. But its disadvantages are slow response speed, small deformation recovery force, poor high temperature resistance and fatigue resistance, and low shape recovery accuracy. On the premise of maintaining the shape...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L63/02C08G59/50C08G59/22
Inventor 陈同举
Owner DONGGUAN JIEYUE SHENGSHI SPORTS GOODS
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