PVC heat stabilizer is an inevitable additive in PVC processing. It can inhibit the degradation of PVC molecules by replacing unstable chlorine atoms, neutralizing hydrogen chloride and reacting with unsaturated sites, so to increase the thermal stability of PVC. The heat stabilizers mainly include lead, Ca-Zn, Sn, etc. Due to their different compositions, their properties and uses are also different. However, its future research is developing towards non-toxic, environmentally friendly, efficient, multi-functional, cost-effective heat stabilizers.
The formulation of PVC heat stabilizer requires the addition of lubricants to assist the heat stabilization effect, while reducing the viscosity of the PVC melt, lowering the processing temperature and achieving better thermal stability. The Rallychem lubricants are available in a variety of stabilizers with advantages by batches stability, ensuring consistent customer usage and reducing processing fluctuations.
|Product||Form||Drop point(℃)||Acid Number (mg KOH/g)||Viscosity (cps)||Hardness (dmm)||Density (g/cc)||Property|
|RL 11||Polyester wax||76||1-3||<5||0.91||Internal lubricant. Good PVC compatibility provides excellent high fluid flow and reduced PVC intermolecular friction.|
|RL 61||Polyester wax||70||1-3||<8||0.91||Internal lubricant. Excellent PVC compatibility without precipitation. Applicable to PVC transparent products, improve fluidity and dispersion.|
|RL 60||Polyester wax||55||1-3||<8||0.91||Internal lubricant. Excellent compatibility and dispersibility for high transparency requirements, improved process flow and non-stick properties.|
|RL 100||Polyester wax||100||<0.5||<3||0.92||External lubricant. Lower melting point and viscosity, effective delayed plasticization, and excellent release properties.|
|RL 117||Polyester wax||118||–||300@150℃||<2||External lubricant. High drop point and viscosity, good plasticization control and dispersion properties, and maintains dimensional stability of the product.|
|RL 200||Polyester wax||118||–||1,000@150℃||<2||External lubricant. Higher drop point and viscosity, good plasticization control and dispersion properties, excellent release effect and better surface gloss.|
|RL 016A||LDOPE wax||110||16||<2||0.91||Excellent external lubricity and fluidity, better surface gloss.|
|RL 925||HDOPE wax||140||25||10,000@150℃||<0.5||0.99||Fast increase the plasticizing speed of PVC, superior metal stripping and excellent dispersion properties.|
|RL 916A||HDOPE wax||140||16||9,000@150℃||<0.5||0.98||Improve PVC plasticizing speed, superior metal peelability and excellent dispersion properties.|