Polyimide type epoxy resin flexibilizer and preparation method thereof
A technology of polyimide type and epoxy resin, which is applied in the field of materials, can solve the problems of poor toughening of epoxy resin, poor compatibility between toughening agent and epoxy resin, etc., and achieve improved impact resistance and thermal stability Good performance and simple synthesis process
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0045] Preparation of polyimide-type epoxy resin toughening agent: 3 parts of 3,3'-dihydroxybenzidine (HAB) were dissolved in a certain amount of N-methylpyrrolidone, and then 5 parts of 2 , 2-bis[4-(3,4-dicarboxyphenoxy)phenyl]malonic anhydride (BPADA), stirred until completely dissolved, and reacted at a constant temperature of -5°C for 2 hours, under the protection of nitrogen throughout the whole process, with this At the same time, dissolve 36 parts of 4,4'-diaminodiphenyl ether (ODA) in a certain amount of N-methylpyrrolidone, and then add 100 parts of 2,2-bis[4-(3,4 -Dicarboxyphenoxy)phenyl]malonic anhydride (BPADA), stirred until completely dissolved, and reacted at a constant temperature of -5°C under nitrogen protection for 2 hours, then mixed the above two solutions, continued to stir for 2 hours, and then A mixed solution of 90 parts of acetic anhydride and 28 parts of pyridine was added, and the reaction was continued for 8 hours. Pour the mixed solution into a l...
Embodiment 2
[0047] Preparation of polyimide epoxy resin toughener (CPEI toughener): 2.8 parts of 3,3'-diamino-4,4'-dihydroxydiphenylsulfone (BAS) were dissolved in a certain amount of In N-methylpyrrolidone, then add 5.7 parts of 2,2-bis[4-(3,4-dicarboxyphenoxy)phenyl]malonic anhydride (BPADA) in batches, stir until completely dissolved, in React at a constant temperature of 5°C for 3 hours, under the protection of nitrogen during the whole process. At the same time, dissolve 40 parts of 4,4'-diaminodiphenyl ether (ODA) in a certain amount of N-methylpyrrolidone, and then batch Add 100 parts of 2,2-bis[4-(3,4-dicarboxyphenoxy)phenyl]malonic anhydride (BPADA), stir until completely dissolved, and react at 5°C for 2 hours under nitrogen protection , Then the above two solutions were mixed and stirred for 3 hours, then a mixed solution of 90 parts of acetic anhydride and 28 parts of pyridine was added, and the reaction was continued for 10 hours. Pour the mixed solution into a large amount ...
Embodiment 3
[0049] Preparation of polyimide epoxy resin toughener (CPEI toughener): 2.9 parts of 3,3'-diamino-4,4'-dihydroxydiphenylsulfone (BAS) were dissolved in a certain amount of N -Methylpyrrolidone, then add 5.5 parts of 2,2-bis[4-(3,4-dicarboxyphenoxy)phenyl]malonic anhydride (BPADA) in batches, stir until completely dissolved, and in 5 ℃ constant temperature reaction for 4 hours, under the protection of nitrogen during the whole process, at the same time, 42 parts of 4,4'-diaminodiphenyl ether (ODA) was dissolved in a certain amount of N-methylpyrrolidone, and then 100 parts were added in batches Parts of 2,2-bis[4-(3,4-dicarboxyphenoxy)phenyl]malonic anhydride (BPADA), stirred until completely dissolved, and reacted at a constant temperature of 5°C for 4 hours under nitrogen protection, and then The above two solutions were mixed, and the stirring was continued for 2 hours under the same conditions to obtain a polyamic acid solution. Pour the mixed solution into deionized water...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More