Abstract
This paper selects liquid bisphenol A epoxy resin with different types of room temperature curing agent and different types of room temperature toughener. Comparing the energy per unit area combined with the tensile test, bending strength, compressive strength and steel-steel tensile shear strength, combination of the 10% amount of A2364 toughener and polyamide A350A curing agent shows best performance in various tests. Its bending strength is 96.9 MPa, shear strength is 23.2 MPa, and Tg is 74.6 °C. The characteristic temperature of the epoxy strengthening system is calculated through DSC. The average apparent activation energy E = 63.79J/mol and the reaction order number n=0.93. The kinetic equation of the toughened epoxy curing system is obtained, which provided theoretical support for practical application.
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