What is the basic principle of synthesis of unsaturated polyester?
Polycondensation polymerization of unsaturated polyester synthetic stone, polyester resin molding curing process is additive polymerization.Both condensation polymerization and addition polymerization are based on the synthesis principle of polyester resin. Before polymerization, the two basic methods, namely addition polymerization and condensation polymerization, are briefly introduced.
Polymerization the process of combining many identical or different low molecular materials into a polymer, such as styrene into polystyrene or styrene copolymerized with maleic anhydride.The former is the polymerization of the same molecule, called homopolymerization also known as binary copolymerization;If three molecules copolymerize, they become copolymers, and so on.
The composition of the products of the polymerization reaction is the same as that of the reactants.The basic components do not change: the same is true for binary copolymerization of styrene and maleic anhydride, where small molecules become large polymers.
Condensation polymerization is a process in which many same or different low molecular substances are combined to form high molecular substances and small molecular substances, such as water, alcohol, ammonia and halide, are separated out at the same time.Condensation polymerization of the same molecule is called homopolycondensation.The polycondensation of different kinds of molecules becomes copolycondensation.Homologous of same functional group if glycol, one shrink diethylene glycol and phthalic anhydride react or glycol and phthalic anhydride reach Sanskrit sound, this kind of copolycondensation is called to mix polycondensation reaction sometimes.
QuanZhou Neweco High Polymer Material Co.,Ltd.
Neweco is one of the leading unsaturated polyester resin manufacturers and suppliers,widely used in automobiles, ships, rail transit, wind power generation, pipe cans, heat and corrosion protection, building materials, stone repair, sanitary ware, artificial stone and other industries. Suitable for hand lay-up, spray, pultrusion, winding, molding, vacuum introduction / RTM, casting and other molding processes. Neweco Resin is committed to excellence and focuses on the application of composite materials to provide customers with comprehensive solutions.