The production process of polyester resin is a responsible and magical process, so we should have a certain basic common sense when we slowly deploy. Today, I will introduce to you what the basic formula of unsaturated polyester resin is and how it works. effect.
What is the basic formula of unsaturated polyester resin? What role does each play
Main components: Unsaturated polyester resin, which can be divided into maleic anhydride type, acrylic type, acrylic epoxy ester type polyester resin according to chemical structure.
Auxiliary materials: crosslinking agent, initiator and accelerator
Crosslinking agent: ethylenic monomer, which is both a solvent and a crosslinking agent. It can dissolve the unsaturated polyester resin and cause a copolymerization reaction between the double bonds to obtain a body product to improve the performance of the cured resin. Commonly used Crosslinking agent: styrene, methyl methacrylate, dipropylene phthalate, vinyl toluene, etc.
Initiator: generally organic peroxide, which decomposes to form free radicals at a certain temperature, thereby initiating the curing of unsaturated polyester resin. Commonly used initiator: dicumyl peroxide
[C6H5C(CH3)2]2O2, dibenzoyl peroxide (C6H5CO)2O2.
Promoter: reduce the decomposition temperature of the initiator to below room temperature.
Effective accelerators for peroxides: dimethylaniline, diethylaniline, dimethyltoluidine, etc.
Promoters effective for hydroperoxides: metal cobalt with variable valence: cobalt naphthenate, cobalt naphthalate, etc.
All experiments must go through a very rigorous process to get what you want. Of course, we must strictly follow the operating steps in all operations to prevent accidents from happening.