PVC Stabilizer

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.
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