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A kind of preparation method of eucommia gum self-repairing gel

A technology of eucommia glue and self-healing is applied in the field of preparation of eucommia glue self-healing gel to achieve the effects of high repairing efficiency, easily available raw materials and low price

Active Publication Date: 2020-08-07
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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  • A kind of preparation method of eucommia gum self-repairing gel
  • A kind of preparation method of eucommia gum self-repairing gel
  • A kind of preparation method of eucommia gum self-repairing gel

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, and 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

A preparation method of eucommia gum self-repairing gel, relating to a preparation method of self-repairing gel. The method of the invention adopts a free radical polymerization mechanism to graft acrylic ester monomers onto eucommia gum, and further cross-link to prepare Eucommia gum self-healing gel. First, a certain concentration of Eucommia gum solution is prepared; then, a free radical initiator is added to the system, and an acrylic ester monomer is added dropwise at the same time; it is reacted at a certain temperature until its phases are separated, and after a period of continuous reaction, the product is washed, After drying, a self-healing gel is produced. When the severed gel was spliced ​​and contacted at 60°C for 3 hours, the repair efficiency could reach more than 60%; after 12 hours of contact, the repair efficiency reached 92%. The self-healing gel develops the functionality of eucommia gum, improves the safety and durability of the material, and expands the application of eucommia gum to coatings, adhesives, biomedicine, construction, sensors, aerospace, marine industry, etc. have important promotional significance.

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 Patents(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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