What problems can be avoided by using PVC foaming regulator?

1、 Defect problem of bubble structure
Bubble collapse/rupture
Enhance the strength of the melt, prevent the rupture of bubble walls during bubble expansion, and avoid the occurrence of bubbles or local large pores;
Reduce gas escape and maintain the stability of bubble morphology.
Uneven pores
Optimize the distribution of cell size to avoid uneven density caused by mixing of small and large cells;
Inhibit the merging of pores and ensure the integrity of closed cell structures.

2、 The problem of out of control processing technology
Insufficient melt strength
Enhance the ability of PVC melt to encapsulate gas and prevent bubble breakage or longitudinal cell delamination;
Avoid foam breakage or penetration in the cross-section of the foam board due to melt relaxation.
Poor plasticization
Promote the fluidity and plasticization uniformity of PVC molecular chains, and solve the problem of insufficient plasticization caused by low temperature or excessive lubrication;
Prevent a sudden drop in melt strength caused by local degradation.

3、 Surface and performance defects of the product

Frost formation

Balance the internal and external lubrication system to reduce the movement of surface precipitates or oil stains on the surface caused by excessive external sliding;

Cooperate with stabilizers to inhibit the precipitation caused by thermal decomposition.

The board surface turns yellow

Maintain temperature stability during processing to avoid yellowing caused by local overheating and degradation of the melt;

Enhance thermal stability and prevent yellowing caused by excessive core temperature.

Dimensional deformation

Optimize the stress distribution of foam cells and enhance the thermal and external deformation resistance of foam boards;

Improve the uniformity of material flow and avoid board bending or uneven thickness.

4、Key parameters for performance optimization‌