Two-component polyurethane adhesives are adhesives obtained by the reaction of isocyanates and hydroxyl-containing compounds, with their molecular chains containing urethane groups (-NHCOO-) or isocyanate groups (-NCO). These adhesives typically consist of two components: one is the isocyanate compo

The influence of moisture on two-component polyurethane is mainly reflected in the following aspects:1. Reduced reaction speed: Moisture reacts with the isocyanate component, reducing the content of the effective component and affecting the curing speed.2. Reduced hardness: Moisture participates in

The main roles of adding molecular sieves in polyurea waterproof coating are as follows:Removing moisture and impurities:Molecular sieves can adsorb moisture and impurities in the coating, reducing their negative impact on the coating’s performance. This improves application performance, weather res

Activated molecular sieve powder is the raw molecular sieve powder after high temperature roasting activation to remove water in the pore, with excellent dispersibility and strong adsorption activity.In addition, in some specific paint or coating systems, trace moisture in the raw materials (solvent