What is the essence of PVC product precipitation? How to solve

Reasons for appearance: high temperature, molecular weight, compatibility, time (plastic products will become hard and brittle over time)

Solution: 1. Dynamic is the processing process, to understand the raw materials very well, such as internal lubrication, external lubrication, plasticizer, stabilizer, PVC powder, it is a synergistic effect to reduce the risk of precipitation. Static is to adjust the formula according to the direction of the customer, such as the customer is a very hot place, to timely reduce the amount of plasticizer adjustment formula, reduce the risk of precipitation.

Is there a relationship between plasticizer precipitation and flash point?

Yes, but not absolutely.

There are two principles for product precipitation:

One is that the plasticizer with smaller molecular weight is easier to precipitate, and the other is that the plasticizer with poorer compatibility is easier to precipitate