PVC Calcium-Zinc Composite Stabilizer (for Cable Compounds)SD-CZ701

Model: SD-CZ701

Type: Powdered composite calcium-zinc stabilizer, lead-free & cadmium-free eco-grade. Designed for flexible PVC cable compounds, featuring balanced thermal stability, electrical insulation, low migration, and resistance to copper-catalyzed aging.

Product Description

This product is a composite calcium-zinc thermal stabilizer based on calcium stearate and zinc stearate, compounded with polyols, hydrotalcite, antioxidants, internal/external lubricants and copper inhibitor. It serves as a replacement for lead salt stabilizers for eco-friendly PVC wire insulation and sheathing compounds. It delivers good initial color hold, outstanding long-term thermal stability, excellent electrical insulation, low migration and low blooming tendency. Compliant with RoHS, REACH and SVHC regulations, suitable for extrusion compounding and high-speed wire extrusion lines.

Physical & Chemical Properties

Recommended Dosage (phr, based on 100 parts PVC resin)

• 70℃ General sheathing / insulation compound: 3.5～5 phr
• 90℃ Heat-resistant cable compound: 4.5～0 phr
• 105℃ High-temperature cable compound: 6.0～0 phr

Compounding suggestion: Epoxidized Soybean Oil (ESO, 3～8 phr) can be added synergistically to improve stabilization performance. Some premium grades work without ESO.

Processing & Handling Instructions

1. Feeding sequence: PVC resin → Plasticizer → Calcium-zinc stabilizer → Filler, colorant and other additives, high-speed mixing.
2. Processing temperature range: 160～185℃ for compound extrusion & pelletizing; 155～180℃ for wire extrusion.
3. Features: Balanced lubrication system, low slippage and low mold sticking; low migration, resistant to blooming during long-term storage. Contains copper inhibitor to prevent accelerated aging and discoloration when in direct contact with copper conductors.
4. Note: Titanium dioxide is recommended for light / white formulations; dark formulations show better weathering resistance.

Compliance Information

• Free of lead, cadmium, barium and other heavy metals; Phthalate-free (formula controllable)
• Compliant with RoHS 2.0, REACH SVHC and national environmental standards for wires and cables. SGS test reports available upon request.

Packaging, Storage & Shelf Life

• Packaging: 25 kg kraft paper bag with PE inner liner
• Storage: Store in cool, dry and ventilated area. Keep away from moisture, direct sunlight and strong acids.
• Shelf life: 12 months (for unopened original packaging)
• Transportation: Ordinary chemical, non-hazardous goods. SDS available separately.

Disclaimer

This TDS is a general template for calcium-zinc stabilizers for cable compounds. Specifications vary by grade and are for reference only, not for final acceptance. Official shipment shall be subject to the manufacturer’s COA.