The role of the modifier is to improve the flexibility, shear resistance, bending resistance, impact resistance and insulation properties of the epoxy resin. Common modifiers are: (1) Polysulfide rubber: It can improve impact strength and peeling resistance. (2) Polyamide resin: It can improve brittleness and improve bonding ability. (3), polyvinyl alcohol tert-butyraldehyde: improve the impact resistance. (4), nitrile rubber: improve the impact resistance. (5), phenolic resin: can improve temperature and corrosion resistance. (6), polyester resin: improve the impact resistance. (7), urethane melamine resin: increase chemical resistance and strength. (8) Furfural resin: Improve static bending performance and improve acid resistance. (9), vinyl resin: improve the peeling resistance and impact strength. (10) Isocyanate: reduces moisture permeability and increases water resistance. (11) Silicone resin: Improve heat resistance. The amount of polysulfide rubber and the like may be between 50 and 300%, and a curing agent is required; the amount of the polyamide resin and the phenolic resin is generally 50-100%, and the amount of the polyester resin is generally 20-30%, which can be no longer reinforced. The agent can also be added with a small amount of curing agent to promote the reaction faster. Generally speaking, the more the amount of the modifier, the greater the flexibility, but the heat distortion temperature of the resin product is correspondingly decreased. In order to improve the flexibility of the resin, a toughening agent such as dibutyl phthalate or dioctyl phthalate is also commonly used. LED Simulation Fish Lights,Outdoor Ocean Fish Lights,Ocean Fish Lights of Gardens,Outdoor Fish Lights Sichuan Kangruntengpu Photoelectric Technology Co., Ltd. , https://www.krtoplighting.com