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Self-repairing cyanate ester resin system and preparation method thereof

A cyanate ester resin and self-repairing technology, which is applied in the field of self-repairing cyanate ester resin system and its preparation, can solve the problems such as the difficulty in repairing crack damage of cyanate resin materials, and achieve the effect of improving service life and safety

Active Publication Date: 2014-04-09
丹阳市俊琪塑业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is the difficult problem of repairing crack damage of cyanate resin materials, providing a self-repairing cyanate resin system and its preparation method that can effectively improve the service life and safety of materials

Method used

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  • Self-repairing cyanate ester resin system and preparation method thereof
  • Self-repairing cyanate ester resin system and preparation method thereof
  • Self-repairing cyanate ester resin system and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Weigh 100g of dicyclopentadiene bisphenol type CE into a 250ml beaker, heat it at 80°C to a transparent solution, add 0.125g of DDS and 5g of PPO (PPO* MX9000-111), and prepolymerize at 120°C for 60min under stirring conditions to obtain bicyclic Pentadiene bisphenol type CE / PPO prepolymerization system, inject the above system into a mold preheated at 120°C and coated with a mold release agent, vacuum degassing at 90-100°C, and according to the process 130°C / 2h+150°C / 2h+180°C / 2h+200°C / 2h for curing. The prepared material is cut to the required size on the cutting machine to test the performance. The fractured samples after the fracture toughness test were fixed with high-temperature adhesive tape and treated at 200°C for 1 hour, and then the fracture toughness value after healing was tested. See Table 1 for relevant performance data.

[0018] Table 1 Dicyclopentadiene bisphenol type CE / PPO resin system cured properties

[0019]

[0020] In this example, the pure...

Embodiment 2

[0024] Weigh 100g of bisphenol A type CE into a 250ml beaker, heat it at 100°C to a transparent solution, add 1gDDS and 15g of PPO (PPO* MX9000-111), and prepolymerize at 130°C for 60min under stirring conditions to obtain bisphenol A type CE / PPO prepolymerization system, inject the above system into a mold preheated at 120°C and coated with a release agent, after vacuum defoaming at 90-100°C, according to the process 130°C / 2h+150°C / 2h+180°C / 2h+200°C / 2h for curing. The prepared material is cut to the required size on the cutting machine to test the performance. After the fracture toughness test, the fractured samples were fixed with high-temperature adhesive tape and treated at 220°C for 1 hour, and then the healing fracture toughness value was tested. See Table 2 for relevant performance data.

[0025] Table 2 Bisphenol A type CE / PPO resin system cured product properties

[0026]

[0027] In this embodiment, the pure resin curing process is: 130°C / 2h+150°C / 2h+180°C / 2h...

Embodiment 3

[0031] Weigh 100g bisphenol F type CE into a 250ml beaker, heat it to a transparent solution at 120°C, add 5gDDS and 15gPPO (PPO* MX9000-111), and pre-polymerize at 130°C for 30min under stirring conditions to obtain bisphenol F type CE / PPO prepolymerization system, inject the above system into a mold preheated at 130°C and coated with a release agent, after vacuum defoaming at 90-100°C, according to the process 130°C / 2h+150°C / 2h+180°C / 2h+200°C / 2h for curing. The prepared material is cut to the required size on the cutting machine to test the performance. After the fracture toughness test, the fractured samples were fixed with high-temperature adhesive tape and treated at 220°C for 1 hour, and then the healing fracture toughness value was tested. See Table 3 for relevant performance data.

[0032] Table 3 Properties of bisphenol F type CE / PPO resin cured product

[0033]

[0034] In this embodiment, the pure resin curing process is: 130°C / 2h+150°C / 2h+180°C / 2h+200°C / 2h;...

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Abstract

The invention relates to a self-repairing cyanate ester resin system and a preparation method of the self-repairing cyanate ester resin system. The preparation method comprises the steps of adding vinyl terminated poly-p-phenylene oxide (PPO) resin with low molecular weight into a cyanate ester (CE) resin system, and using 4,4 phi-diamino diphenyl sulfone (DDS) as a catalyst to treat the CE / PPO resin system through low-temperature process to obtain the self-repairing cyanate ester resin system with high performance. According to the technical scheme, the vinyl terminated PPO is utilized for maintaining thermoplasticity of the CE during forming; after the cured CE resin system is damaged, the PPO ingredients can be melted and flow to fill a crack to realize material repairing through a heating system, therefore, the vinyl terminated PPO has positive effects on prolonging the service life of the material and improving the safety of the material; the resin system can be used for preparing high-performance composite materials, electronic devices and the like for aerospace construction.

Description

technical field [0001] The invention relates to a self-repairing cyanate ester (CE) resin system and a preparation method thereof. The invention belongs to the field of high-performance resin-based composite materials. Background technique [0002] Cyanate ester (CE) resin is a high-performance thermosetting resin, and its cured product has high heat resistance, low moisture absorption rate, low dielectric constant and dielectric loss, etc., which makes CE resin widely used in military, aviation, aerospace and Electronics etc. have huge potential. Although CE resin has excellent comprehensive properties, it has the disadvantages of high resin curing reaction temperature, resulting in large residual stress of the cured product, and poor toughness of the cured resin. The above shortcomings make CE resin and its composite materials prone to damage during service, which affects the service life and safety of the material. It can be seen that it is of great significance to stu...

Claims

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Application Information

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IPC IPC(8): C08L79/04C08L71/12
CPCC08L79/04C08L71/126
Inventor 袁莉梁国正顾嫒娟
Owner 丹阳市俊琪塑业有限公司
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