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A kind of elemental sulfur-terpene copolymer/epoxy resin composition with self-healing properties and preparation method thereof

A technology of epoxy resin and elemental sulfur, which is applied in the field of materials, can solve problems such as difficulty in achieving both repair efficiency and mechanical strength, difficulty in realizing recovery and repair, and complicated process, so as to achieve simple and easy-to-operate preparation process, avoid waste, and high-efficiency reaction stable effect

Active Publication Date: 2021-03-12
GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is difficult for most polymer materials to have both self-healing efficiency and mechanical strength, and some are expensive and complicated in process.
[0003] Sulfur / terpene copolymers are sulfur-rich oligomers with disulfide bonds; epoxy-based polymers are widely used in production and life due to their light weight, wear resistance, and easy processing, but due to their thermosetting properties , it is extremely difficult to recover and restore

Method used

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  • A kind of elemental sulfur-terpene copolymer/epoxy resin composition with self-healing properties and preparation method thereof
  • A kind of elemental sulfur-terpene copolymer/epoxy resin composition with self-healing properties and preparation method thereof
  • A kind of elemental sulfur-terpene copolymer/epoxy resin composition with self-healing properties and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) be 400% of bisphenol A epoxy resin quality according to sulfur / terpene copolymer consumption, the consumption of auxiliary agent 2-ethylimidazole is 0.5% of epoxy resin quality, prepare materials, epoxy resin and sulfur / After the terpene copolymer is dissolved in dichloromethane, add additives and mix evenly, remove the solvent at room temperature under vacuum, then pour into molding, react at 60°C for 0.5h, then react at 80°C for 1h, and finally at 100°C Reaction for 1h, the initial product was obtained.

[0027] (2) The preliminary product was reacted at 130° C. for 2.5 hours to obtain the final elemental sulfur-terpene copolymer / epoxy resin composition with self-healing properties.

[0028] After scratching the self-healing properties of the elemental sulfur-terpene copolymer / epoxy resin composition film material, it was thermally repaired at 60 °C. from figure 1 , figure 2 , image 3 , Figure 4 It can be seen that after being scratched by the elemental s...

Embodiment 2

[0030] (1) The amount of sulfur / terpene copolymer is 300% of the quality of bisphenol A epoxy resin, and the amount of auxiliary agent 2,4,6-tris(dimethylaminomethyl)phenol is 0.5% of the quality of epoxy resin , Prepare materials, dissolve epoxy resin and sulfur / terpene copolymer in tetrahydrofuran, add additives, mix well, remove solvent under vacuum, then cast molding, react at 60°C for 0.5h, and then react at 80°C 1h, and finally reacted at 100°C for 1h to obtain a preliminary product.

[0031] (2) The preliminary product was cured at 130° C. for 3 hours to obtain the final elemental sulfur-terpene copolymer / epoxy resin composition with self-healing properties.

[0032] The self-healing property of the elemental sulfur-terpene copolymer / epoxy resin composition material was scratched and then thermally repaired at 55°C.

Embodiment 3

[0034] (1) according to sulfur / terpene copolymer consumption is 400% of bisphenol A epoxy resin quality, the consumption of auxiliary agent 2-ethyl-4-methylimidazole is 0.5% of epoxy resin quality, get the raw materials ready, and ring After oxygen resin and sulfur / terpene copolymer are dissolved in dichloromethane, add additives and mix well, remove the solvent under vacuum, then pour into molding, react at 60°C for 0.5h, then react at 80°C for 1h, and finally Reacted at 100°C for 2h to obtain a preliminary product.

[0035] (2) Curing the preliminary cured product at 120° C. for 3 hours to obtain the final elemental sulfur-terpene copolymer / epoxy resin composition with self-healing properties.

[0036] The self-healing property of the elemental sulfur-terpene copolymer / epoxy resin composition material was scratched and then thermally repaired at 60°C.

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Abstract

The invention discloses a self-healing elemental sulfur-terpene copolymer / epoxy resin composition and a preparation method thereof. The sulfur / terpene copolymer and epoxy resin are first dissolved in an organic reagent; then added to react Auxiliary, mix evenly, remove organic solvent under vacuum, pour into molding, and cure at 60-110°C for 2-4 hours to obtain a crude product; then cure the crude product at 120-150°C for 2-5 hours to obtain a self-healing Elemental sulfur-terpene copolymer / epoxy resin composition. The preparation process of the elemental sulfur-terpene copolymer / epoxy resin composition is simple and easy to operate, the reaction is efficient and stable, and it can be thermally repaired at 40-80° C. after being scratched.

Description

technical field [0001] The invention relates to the field of materials, in particular to a self-repairing elemental sulfur-terpene copolymer / epoxy resin composition and a preparation method thereof. Background technique [0002] With the rapid development of industrial technology and social life, polymer materials play an increasingly important role in modern production and life because of their excellent mechanical properties, small specific gravity and easy processing. However, the material will inevitably be damaged during use. If the damage is not repaired in time, many properties of the material will degrade until it cannot be used. There are certain safety hazards in use. Inspired by bionics, self-repair research using polymer materials was born. At present, self-healing materials can be divided into two categories according to whether an external repair agent is implanted: one is the foreign aid self-healing system, and the other is the intrinsic self-healing system...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G81/00
CPCC08G81/00
Inventor 许凯孙龙凤高树曦桂雪峰刘凌利
Owner GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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