The relative density of the unsaturated polyester resin is about 1.11 to 1.20, and the volume shrinkage is large at the time of curing. Some physical properties of the cured resin are as follows:
(1) Heat resistance. Most of the unsaturated polyester resins have a heat distortion temperature of 50 to 60 ° C, and some resins with good heat resistance can reach 120 ° C. The red thermal expansion coefficient α1 is (130 to 150) × 10 -6 ° C.
(2) Mechanical properties. The unsaturated polyester resin has high strength such as stretching, bending, and compression.
(3) Chemical resistance. Unsaturated polyester resin has good performance against water, dilute acid and dilute alkali, and has poor resistance to organic solvents. At the same time, the chemical resistance of the resin can vary greatly depending on its chemical structure and geometrical switch.
(4) Dielectric properties. The dielectric properties of the unsaturated polyacid resin are good.
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.