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The CPVC resin is made by chlorination modification of PVC resin and is one advanced engineering material.
Comparison of resin indexes
| Index | PVC | CPVC |
| Density(g/cm3) | 1.38—1.45 | 1.45—1.58 |
| Vicat softening temperature(°C) | 72—82 | 100—125 |
| Tensile strength(MPa) | 39—58 | 54—70 |
| Bend strength(MPa) | 105 | 120 |
| Linear coefficient of thermalexpansion(K-1) | (6—7)×10-5 | (7.5-8)×10-5 |
| Extension at break | 120 | 50 |
Specification and technical indexes
No. | Item | Unit | Index | ||||
J-700-1 | J-700-2 | Z-500-1 | Z-500-2 | ||||
1 | 30-mesh screening rate | % | ≥99 | ≥99 | ≥99 | ≥99 | |
2 | volatile content | best quality | % | ≤0.30 | ≤0.30 | ≤0.30 | ≤0.30 |
first quality | ≤0.35 | ≤0.35 | ≤0.35 | ≤0.35 | |||
qualified quality | ≤0.40 | ≤0.40 | ≤0.40 | ≤0.40 | |||
3 | chlorine content | % | 63~66 | 66~69 | 63~66 | 66~69 | |
4 | heat decomposition temperature | °C | ≥110 | ≥110 | ≥110 | ≥110 | |
5 | heat stability | S | ≥20 | ≥20 | ≥20 | ≥20 | |
CPVC RESIN