PVC Composite Heat Stabilizer (For Cable Compound)  SD-203DL

Model: SD-203DL

Application: Plasticized flexible PVC insulation and sheath compounds for wires & cables, communication wires and cables

1. Product Description

SD-203DL is a composite lead salt heat stabilizer. Its main stabilizing components are tribasic lead sulfate, dibasic lead phosphite and lead stearate, compounded with special internal & external lubricants, synergistic additives and copper anti-aging agents for cable systems. It is developed for extrusion of flexible PVC cable compounds, suitable for 70℃, 90℃ and 105℃ PVC wire & cable formulations. It provides long-lasting thermal stability, excellent electrical insulation, high volume resistivity and low water absorption. Its balanced lubrication system ensures stable plasticization and good melt flow during cable extrusion. It has good compatibility with plasticizers such as DOP, DOTP, DINP, calcium carbonate, talc, flame retardants and colorants. Extruded sheath and insulation layers have smooth surface and stable long-term thermal aging performance, ideal for mass production of dark/black wire & cable insulation and sheath.

2. Typical Specifications

Note: The above data are typical values only, not guaranteed minimum specifications. Variations may exist between grades.

3. Recommended Dosage

Based on 100 phr PVC resin Recommended dosage: 4.0 ~ 5.8 phr

• General 70℃ cable sheath compound: 4.0～8 phr
• 90/105℃ heat-resistant grade, high-filled and flame-retardant cable compound: 4.8～8 phr

Dosage can be adjusted according to plasticizer type, filler loading, flame retardant system, extrusion speed and temperature rating.

4. Processing Guide

Applicable products: PVC insulation & sheath compounds for wires and cables, communication wire and cable compounds.

Processing temperature range: 155 ~ 175 ℃

Mixing temperature: 110℃～115℃.

Key features: Long-term thermal aging resistance, high insulation resistance, low water absorption, balanced lubrication, stable plasticization and smooth surface. Resist copper-catalyzed aging, compatible with single-screw cable extruder; stable extrusion, low risk of strand breakage and bubbling.

5. Packaging, Storage & Shelf Life

Packing: 25 kg / bag, PP woven bag with PE inner liner

Storage: Store in cool, dry and ventilated warehouse. Keep away from moisture, direct sunlight, acid materials, strong oxidants and sulfides. Seal tightly after opening to prevent caking caused by moisture absorption.

Shelf life: 12 months under recommended storage condition in unopened original package.

6. Safety, Health & Environmental Information

This product contains toxic lead compounds. Avoid dust inhalation at all times. Dust mask, acid & alkali resistant gloves and goggles are required. Prevent direct contact with skin and eyes. No eating, drinking or smoking in working area.

In case of eye contact, rinse thoroughly with plenty of clean water and seek medical help immediately. Collect spilled material in dry way and dispose as hazardous waste in accordance with local regulations. SDS is available upon request.

⚠️ Caution: Contains lead. Avoid contact with sulfides to prevent black discoloration. Not suitable for RoHS, lead-free or food-contact applications.

7. Disclaimer

All data in this TDS are typical reference values and shall not constitute legally binding quality warranty. Due to differences in customer formulation, raw material quality, equipment and processing parameters, users shall conduct pre-lab trials and production verification to confirm suitability. Final performance depends on user’s actual production conditions.