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

For more questions, please just kindly let me know,Novista can help you.

Welcome to contact us :

sales02@novistagroup.com

+86 15689178004