Problems and solutions in the application of monomer lead salt stabilizers
Problems and solutions in the application of monomer lead salt stabilizers
First ,Yellowing or paste on the surface of the product
Possible reasons:
1. Insufficient stability
2. Insufficient lubricity
3. Too fast plasticization
Solution:
1. Replace the stabilizer or increase its dosage
2. Increase the total amount of lubricant
3. Adjust the ratio of internal and external lubricants
Second , Black lines on the surface of the product
Possible reasons:
1. Uneven dispersion of carbon black and stabilizer in the raw materials
2. Poor material fluidity
Solution:
1. Improve mixing, strengthen stirring, and improve dispersion performance
2. Improve the formula and improve fluidity
Third, Cracks on the inner wall of the product
Possible reasons:
1. Impurities in the raw materials
2. Poor plasticization of the product
Solution:
1. Clean and remove impurities
2. Adjust the formula, reduce the amount of external lubricant, and improve plasticization ability
Fourth, There are pores in the cross section of the product
Possible reasons:
1. High volatile content in the raw material formula
2. Insufficient lubrication between the material and the screw
Solution:
1. Adjust the formula to improve the quality of the lubricant
2. Add external lubricant to improve the lubrication level
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