Eucommia ulmoides gum self-repairing gel preparation method

A technology of eucommia glue and self-healing, which is applied in the field of preparation of eucommia glue self-healing gel to achieve the effects of easy availability of raw materials, mature polymerization process and high repair efficiency

Active Publication Date: 2017-10-24
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its limitation is that the repair can only occur in a specific position, and there is a problem of repair agent consumption

Method used

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  • Eucommia ulmoides gum self-repairing gel preparation method
  • Eucommia ulmoides gum self-repairing gel preparation method
  • Eucommia ulmoides gum self-repairing gel preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Dissolve 5 g of Eucommia gum in 100 ml of toluene, raise the temperature to 70°C until completely dissolved, add 0.75 g of initiator dibenzoyl peroxide, and simultaneously add 13.4 ml of butyl methacrylate monomer dropwise. After 1 hour, add 0.25 g of initiator dibenzoyl peroxide. When phase separation occurs in the system, the reaction is continued for 1 hour. The product is washed with ethanol and air-dried, then vacuum-dried at 40°C for 24 hours.

Embodiment 2

[0022] Dissolve 10g of Eucommia gum in 150ml of petroleum ether 90-120, raise the temperature to 75°C until completely dissolved, add 0.75g of initiator dicumyl peroxide, and dropwise add 32.4ml of ethyl methacrylate monomer. When phase separation occurred in the system, the reaction was continued for 3 h, and the product was washed with ethanol and air-dried, then vacuum-dried at 40 °C for 24 h. Example 3

Embodiment 3

[0023] Dissolve 10g of Eucommia gum in 140ml of petroleum ether 60-90, raise the temperature to 65°C until completely dissolved, add 1g of initiator tert-butyl peroxyvaleric acid, and dropwise add 26.6ml of butyl methacrylate monomer. After 1 hour, add 0.5 g of initiator, and continue to react for 5 hours when phase separation occurs in the system. The product is washed with ethanol and air-dried, then vacuum-dried at 40°C for 24 hours.

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Abstract

The invention provides a eucommia ulmoides gum self-repairing gel preparation method, and relates to a self-repairing gel preparation method. According to the method, an acrylate monomer is grafted onto a eucommia ulmoides gum by using free radical polymerization mechanism, and further cross-linking is performed to produce the eucommia ulmoides gum self-repairing gel; and the preparation method specifically comprises: preparing a eucommia ulmoides gum solution having a certain concentration, adding a free radical initiator to the system while adding an acrylate monomer in a dropwise manner, carrying out a reaction at a certain temperature until the phase separation is generated, continuously carrying out the reaction for a certain time, washing the product, and drying to prepare the self-repairing gel. According to the present invention, the repairing efficiency can achieve more than 60% after the cut gel is subjected to splicing contact for 3 h at a temperature of 60 DEG C, and the repairing efficiency can achieve 92% after the cut gel is subjected to splicing contact for 12 h; and the self-repairing gel develops the function of the eucommia ulmoides gum, improves the safety and the durability of the material, and provides the important promotion significance for the expansion of the application fields of eucommia ulmoides gum coating materials, adhesives, biomedicine, building, sensors, aerospace, marine industry, and the like.

Description

technical field [0001] The invention relates to a method for preparing self-repairing gel, in particular to a method for preparing eucommia gum self-repairing gel. Background technique [0002] Due to its own characteristics, polymer materials are prone to defects in certain parts during molding or application, and external damage is easy to find. However, if internal defects are not discovered in time, the mechanical properties of the material will be seriously reduced and the application time of the material will be shortened. Self-healing is also called self-healing. In materials science research, self-healing is understood as the ability of materials to sense changes in external conditions, provide information feedback through its own mechanism, and restore its original performance to damaged parts. This property has important implications for biology, construction, aerospace, marine and automotive industries. [0003] At present, self-healing materials can be divided i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F253/00C08F220/18C08F220/14C08J3/075
CPCC08F253/00C08J3/075C08J2351/04C08F220/18C08F220/1802C08F220/1804
Inventor 杨凤孟祥晴张海潮方庆红康海澜
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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