Because the biggest disadvantage of Wholesale POLYURETHANE SEALANT FOR GENERAL USE material is poor high-temperature resistance and improving the heat resistance of PL, IPN technology can be used because IPN is an effective way to blend and modify polymers and improve the compatibility of polymers. According to the characteristics of Wholesale POLYURETHANE SEALANT FOR GENERAL USE material, high-temperature resistant resins such as epoxy and PSA can be selected to interpenetrate with Wholesale POLYURETHANE SEALANT FOR GENERAL USE material, so that they can complement each other and achieve the desired high-temperature resistant adhesive with hardness and flexibility.

Wholesale POLYURETHANE SEALANT FOR GENERAL USE material has good low temperature resistance mainly refers to the adhesive made of polyether type as raw material, while the adhesive of polyacetic type has poor low temperature resistance. In the preparation, the addition of chain extenders can increase the molecular weight of polyurethane vinegar and promote the low-temperature performance modification. Crosslinkers with longer molecular segments, such as 1,4-butanediol, and crosslinkers with steric hindrance groups, such as neopentyl glycol, can also be used to prevent excessive branching crosslinking and improve the low-temperature performance.

The hydrolysis resistance of Wholesale POLYURETHANE SEALANT FOR GENERAL USE material is poor, which can be improved by adding a hydrolysis resistant stabilizer such as carbodiimide. The hydrolysis resistance of the adhesive made by blending part of polyether into polyacetic acid can also be improved. Adding 0.5-5% organic silane coupling agent to the adhesive, such as y-aminopropyl triethoxysilane (KH-550), y-glycidyl ether propyl trimethoxysilane (KH-560) > y-ryopropyl trimethoxysilane (kh-590), (3 - [3,4] epoxy cyclohexyl ethyl silane, epoxy propyl trimethoxysilane, etc., can improve the hydrolysis resistance of the adhesive.