Polyurethane production line

for the chemical industry

Raw Materials of PU Glue 1. Prepolymer (HDI / TDI + PPEG) Main film former, provides bonding strength. 2. Filler (such as calcium carbonate, talc) Reduce cost, increase volume. 3. Inhibitor (such as BHT) Prevent cross-linking reaction during storage. 4. Stabilizer (UV absorber) Improve weather resistance. 5. Plasticizer (such as DOP) Increase flexibility, adjust viscosity. 6. Additive (thixotropic agent, defoamer) Improve fluidity or defoaming. 7. Moisture control agent (such as molecular sieve) Absorb moisture and extend shelf life. Environmental Protection and Safety Requirements 1. VOC treatment: Equipped with condensation recovery or activated carbon adsorption device. 2. Eplosion-proof measures: The solvent area needs explosion-proof electrical and electrostatic grounding. 3. Wastewater treatment: Reaction by-products (such as amines) need to be neutralized. Common Problems and Solutions 1. There are many bubbles in PU glue: Check the vacuum degassing parameters or the moisture content of the raw materials. 2. Unstable curing speed: Adjust the catalyst ratio or the ambient temperature and humidity. 3.Short storage period: Optimize the sealed packaging or add stabilizers.