(1) The performance and application of china POLYURETHANE SEALANT FOR GENERAL USE For sale. The resin containing many repetitive active groups on the main chain is called polyurethane. The structures of polyurethane and polyamide are very similar, except that the active group of the former is one more oxygen atom than that of the latter, so the properties of the two are similar.

China POLYURETHANE SEALANT FOR GENERAL USE For sale is composed of isocyanate, polyester or polyether, which has high polarity and activity. It has good adhesion to various metal and non-metallic materials. When using, adjust the type and proportion of components to obtain flexible or hard adhesive laye. POLYURETHANE SEALANT FOR GENERAL USE For sale can be cured at high temperature or room temperature, and is widely used.

China POLYURETHANE SEALANT FOR GENERAL USE For sale has the characteristics of water resistance, oil resistance, solvent resistance, ozone resistance, bacteria resistance, and especially has excellent bonding strength at low temperatures, so it is a promising low-temperature adhesive.

POLYURETHANE SEALANT FOR GENERAL USE For sale has good affinity for metal, wood, rubber, fabric and most plastics (especially PVC containing a lot of plasticizers). It is widely used in the lamination of adhesive fabrics of light packaging materials, the manufacture of composite materials, the manufacture of electrostatic flocking, non-woven fabrics, footwear, rubber products and sealants. It is expected that there will be greater development in the future.

(2) Caprolactone polyol POLYURETHANE SEALANT FOR GENERAL USE For sale This kind of adhesive is obtained by the reaction of caprolactone and diol. Compared with ordinary polyester, china POLYURETHANE SEALANT FOR GENERAL USE For sale has the following advantages: ① good color; ② The structure is uniform, the molecular weight distribution is uniform, ③ there are only active hydroxyl groups with terminal groups, and the number of functional groups is clear; ④ Hydrolysis resistance, low tenderness and good softness; ⑤ Because of its low viscosity, it can be almost 100% cured and can be used with a wide range of solvents. ⑥ Compared with polyethers, outdoor durability is particularly excellent.