When the temperature is low in winter, PVC plastic pipes are basically hard.

When the external temperature is lower than its glass transition temperature

Mechanical property degradation

It looks hard and brittle.

Improvement method:

1, toughening agent, such as ACR, is added in the formulation design.

2. Reduce the addition of external plasticizer, and it is better to add internal plasticizer.

Of course, the first case can be introduced from the perspective of cost.