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Jan 15, 2024
Specific Implementation Method 25: The epoxy matrix resin in this embodiment is composed of 40 parts by mass of F-44 phenolic epoxy resin, 60 parts by mass of E-51 epoxy resin, 5 parts by mass of core-shell polymer, 16 parts by mass of 4,4 '- diaminodiphenylsulfone curing agent, 8 parts by mass of dicyandiamide curing agent, and 5.0 parts by mass of 3-phenyl-1,1-dimethylurea curing accelerator. The core-shell polymer is made of polybutadiene rubber as the soft core, Hard shell with polymethyl methacrylate.
The core-shell polymer described in this embodiment is added in the form of a parent mixture of Kane Ace MX-125 produced by Kaneka Company in Japan, where the mass content of Kane Ace MX-125 core-shell polymer is 25%, with a soft core of polybutadiene and a hard shell of polymethyl propionate, with a particle size of 100nm; The mass content of B-51 epoxy resin is 75%.
Perform performance testing on the cured product of the epoxy matrix resin in this embodiment cured at 120 ° C for 2 hours, using the methods and parameters recorded in specific embodiment 1.The test result is that the glass transition temperature of the cured product of the epoxy matrix resin in this embodiment (cured at 120 ° C for 2 hours) is 137.3 ° C; Impact strength 16.8KJ/m; The tensile strength is 83.5MPa, and the tensile modulus is 3.4GPa; Breaking elongation force 3.5%; Bending strength 126 4MPa, bending modulus 3.4GPa.The epoxy matrix resin of this embodiment has good performance.
The difference between the preparation method of the epoxy matrix resin in this embodiment and the preparation method of the epoxy matrix resin recorded in specific embodiment 22 lies in the fact that in step 1, 40 parts of F-44 phenolic epoxy resin, 45 parts of E-51 epoxy resin, 20 parts of Kane Ace MX-125 matrix mixture produced by Kaneka Company in Japan, and 16 parts of 4,4 '- diaminodiphenyl sulfone as a curing agent are weighed by mass 8 parts of dicyandiamide curing agent and 5.0 parts of 3-phenyl-1,1-dimethylurea curing accelerator: in the remaining steps, add the corresponding mass fraction of the substance weighed in step 1 above.
The prepreg was prepared using the preparation method described in specific embodiment 23, with the difference being that the preparation method of the epoxy matrix resin was carried out using the method described in this embodiment. The prepared prepreg is made of epoxy matrix resin and SW110 glass fiber woven fabric (density 110g/m ^) according to specific implementation method 25, with a volatile content of less than 1%, of which the epoxy matrix resin has a mass content of 37% to 43%. The gel time of prepreg is measured according to "HB 7736.7 Test Method for Physical Properties of Composite Prepreg Part 7: Determination of gel Time", and the gel time of prepreg at 120 ° C is 9~20min.
Specific implementation method 26: Comparative experiment of this implementation method: The epoxy matrix resin is made by mass fraction of 40 parts of F-44 phenolic epoxy resin, 60 parts of B-51 epoxy resin, 16 parts of 4,4 '- diaminodiphenyl sulfone curing agent, 8 parts of dicyandiamide curing agent, and 5.0 parts of 3-phenyl-1,1-dimethylurea curing accelerator.
Perform performance testing on the cured product of the epoxy matrix resin in this embodiment cured at 120 ° C for 2 hours, using the methods and parameters recorded in specific embodiment 1. The test result is: the glass transition temperature force of the cured product of the epoxy matrix resin in this embodiment (curing condition: curing at 120 ° C for 2 hours) is 137.8 ° C; The impact strength is 11.5KJ/m '; The tensile strength is 62.5MPa, and the tensile modulus is 3.6GPa; Elongation at break 2.7%; The bending strength is 108.0MPa, and the bending modulus force is 3.5GPa.
SILIBASE is the combination of "SILICONE" and "BASED", which means that SILIBASE SILICONE is focused on producing and selling all kinds of SILICONE-BASED new materials.Our main products are Artificial resin, artificial resin, resin adhesive,epoxy resin kit,epoxy floor coating, epoxy floor,Epoxy Matrix Resin, epoxy resin fibreglass resin, Epoxy Matrix, Epoxy Composites.