Where is the difference between PVC and CPVC?

Where is the difference between PVC and CPVC?

CPVC resin is made of polyvinyl chloride (PVC) resin chlorination modification process, is a new type of engineering plastic. The product is white or light yellow, odorless, tasteless, non-toxic particles or loose powder. PVC resin after chlorination, irregular molecular bond increases, polarity increased, so that the resin solubility increases, the chemical stability is increased, so as to improve the heat resistance, acid and alkali, salt material, corrosion, such as oxidation agent. Improve the mechanical property of numerical heat distortion temperature, chlorine content increased from 56.7% to 63-69%, VEKA softening temperature by 72-82 C (up to 90-125 DEG C), the highest using temperature can reach 110 DEG C use for a long time, the temperature of 95 DEG CORZAN CPVC. The performance index is more outstanding. Therefore, CPVC is a new type of engineering plastics a broad application prospect.


The difference from PVC

1, the content of chlorine is different

PVC (polyvinyl chloride) chlorine content: 56%

Chlorine content of CPVC (chlorinated polyvinyl chloride): 67%

2, VEKA temperature (thermal deformation temperature): testability, the higher the VEKA temperature, the better the performance of the better

VEKA temperature of general CPVC and PVC:

PVC: the VEKA temperature is 71-75 C

CPVC: the VEKA temperature is 100-125 C

Tube VEKA temperature 110 C JC --701 raw material CPVC VEKA temperature 124 C -128 C.

Tube VEKA temperature 103 C ZS --601 raw material CPVC VEKA temperature 121 C -125 C.

The flow (rheological) requirement of the tube is higher than that of the tube, and the temperature of the VEKA is lower than that of the ordinary tube by adding additives.

3, the test strength of the drop weight test is higher than the ordinary PVC2 times or above.

4, the test of water pressure resistance is higher than that of ordinary PVC