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Briefly introduce the uses of polyurethane adhesives
2026-09-04Polyurethane adhesive has high bonding strength, good toughness, low temperature resistance, water resistance, and aging resistance. It can be used as a single component or two-component adhesive, and comes in solvent based, water-based, and hot melt types. It can bond various heterogeneous materials such as metals, plastics, rubber, wood, fabrics, and composite materials, and is applied in multip
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What industries are polyester polyols mainly used in
2026-08-04Polyester polyols are one of the core raw materials for preparing polyurethane (PU), which are divided into aliphatic polyester polyols, aromatic polyester polyols, polycaprolactone polyols, and bio based polyester polyols. By relying on polar ester groups within the molecule, polyurethane is endowed with high wear resistance, high adhesion, oil resistance, and excellent mechanical strength; It of
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What is the function of polyurethane elastomers
2026-07-25Simple summary: It is the basic raw material for manufacturing polyurethane elastomers (PU rubber), which reacts and solidifies with chain extenders to produce a high elasticity and wear-resistant polymer material with properties between ordinary rubber and engineering plastics.
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What are the production processes of polyester polyols
2026-05-231、 Conventional melt condensation method Feeding: Dicarboxylic acid and polyol are fed into the reaction vessel at once, with an appropriate excess of alcohol; Heating esterification: esterification reaction occurs at 140-200 ℃, generating water and continuously evaporating it;
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What is the function of Solvent resistant polyester polyol
2026-05-231、 Film forming function (the most basic function) After drying and curing, polyurethane dispersion or solvent based PU resin will form a continuous and flexible polymer film, which forms a protective film on the surface of leather or artificial leather substrate, firmly fixing fillers, colorants, and additives to prevent pigment and powder from falling off.
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