Rigid polyester polyols are widely used in closed-cell spray polyurethane foam (SPF) systems for insulation, roofing, tanks, and cold storage applications. Compared with polyether systems, polyester-based spray foams offer higher compressive strength and better fire performance, making them suitable
Amidst the rapid expansion of the polyurethane materials industry, Hengshui Xinfa Polyurethane Materials Co., Ltd. has secured its position in the domestic market through specialised R&D and large-scale production. Its subsidiary, Hebei Xinshe Technology Co., Ltd., leverages global trade as its wings, forming a dual-engine development model of ‘production-R&D + international trade’. This collaboration has established them as a model for synergistic development within Hebei's polyurethane and polyester materials sector.
clear, practical rundown of polyurethane catalysts for rigid foam, especially the kind used in PIR / PUR insulation systems Role of Catalysts in Rigid PU FoamIn rigid foam formulations, catalysts control:Blowing reaction (isocyanate + water → CO₂)Gelling reaction (isocyanate + polyol → polymer)Tr