1, low density, can appropriately increase the amount of calcium carbonate, reduce costs.
Compared with composite lead stabilizer, the density of calcic zinc heat stabilizer is about 40% lower than that of the composite lead stabilizer. PVC products only reduce the specific gravity of heat stabilizer by about 2%.
2. Green environmental protection
Free of heavy metals, lead, cadmium, etc
3. Resistance to vulcanization.
In the field of PVC doors and windows, the use of composite lead heat stabilizers in some parts of the north of China (a large amount of sulphur containing coal is caused by acid rain) is prone to blackening, while calcium zinc heat stabilizers will not be contaminated.
4. Good system switching characteristics.
When the traditional compound lead heat stabilizer is converted to organic tin heat stabilizer, there will be cross contamination, which leads to high switching cost, and both calcium and zinc heat stabilizers do not react with these two heat stabilizers, and the cost of switching to each other is low.