Polythiol (functional curing agent) is a room temperature or low temperature fast curing agent, with tertiary amine as accelerator, which can cure epoxy resin in 1 to 5 minutes. Polythiol (functional curing agent) is a colorless transparent liquid with little odor and a relative density of 1.15 to 1.29. Viscosity (25℃) 250~15000mPa·S. Mercapto equivalent 130~280.
Our company's Thiol series are secondary distilled polythiol thiol compounds with lower odor than conventional polythiol.
It can be used in photo-curing systems to significantly improve the oxygen inhibition phenomenon under low-energy curing conditions.
The polymerization inhibition of oxygen is mainly due to the formation of peroxyl radicals between free radicals and oxygen in the system, which causes the chain growth reaction to slow down. The active hydrogen in mercaptans can react with peroxyl radicals, and the mercaptans are deprived of hydrogen. Finally, new free radicals are formed and continue to participate in the addition reaction. It can significantly promote the adhesion, toughness and double bond conversion rate of the curing system. When using tertiary amine as accelerator for epoxy curing agent, it can quickly
Quick curing, enhanced adhesion and tensile strength, and significantly improved resistance to moisture and heat.
Polythiol (functional curing agent) can be used as an accelerator for amine and low molecular weight polyamide curing agents, and is widely used in the construction, automotive, electronics and adhesive fields for sealing, which can improve the performance and durability of products. Polythiol (functional curing agent) can also be used for surface treatment of non-metallic materials such as wood and cardboard, as well as edge sealing of various material surfaces, and bonding of flat, curved, rounded and irregular surfaces of various materials.
应用：光刻胶