A kind of self-healing cyanate ester resin system and preparation method thereof
A cyanate resin and self-healing technology, applied in the field of self-healing cyanate resin system and its preparation, can solve the problems of difficulty in repairing cracks and damage of cyanate resin materials, and achieve the effect of improving service life and safety
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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 pre-polymerize 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 CE into a 250ml beaker, heat it to a transparent solution at 100°C, add 1gDDS and 15g of PPO (PPO*MX9000-111), and pre-polymerize at 130°C for 60min under stirring to obtain bisphenol A 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+200°C / 2h; post-curin...
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 prepolymerize 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 Bisphenol F type CE / PPO resin system cured product performance
[0033]
[0034] In this embodiment, the pure resin curing process is: 130°C / 2h+150°C / 2h+180°C / 2h+200°C / ...
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