After entering the 21st century, due to the increasingly strict requirements for global environmental protection, the regulations restricting heavy metal heat stabilizers are increasingly intensified, so that the production and consumption of stabilizers are further developing in the direction of non-toxic, low toxicity and compound effect, lead-free and cadmium-free has attracted the attention of developed countries, and alternative products continue to appear and apply, the application of lead, cadmium, especially cadmium heat stabilizers has gradually declined, and some non-toxic or low-toxicity heat stabilizers such as organotin compounds, calcium and zinc soap salts, rare earth heat stabilizers, etc.
Although in recent years, there are many deficiencies and gaps in the thermostable level of compound, non-toxic and low-toxicity in China, such as fewer varieties and small production scale. The production and application of new heat stabilizers in China are far from meeting the development of domestic PVC wood plastic, and the heat stabilizers required for some relatively high-end products mainly rely on imports. The rapid development of PVC wood plastic in China provides a good market guarantee and broad development space for the development of the heat stabilizer industry, and also puts forward higher requirements for the heat stabilizer industry. To strengthen the research and development of new thermal stabilizers in China, PVC wood plastic thermal stabilizers should pay attention to the following points:
1. Strengthen the improvement of the original lead-free cadmium-free calcium and zinc heat stabilizer to improve the quality of the original products;
2. According to the source of raw materials and market distribution, gradually establish a centralized large-scale auxiliary production plant group;
3. Cooperate with the development and production of other PVC wood plastic additives to further reduce resource waste and environmental dyeing, and promote the sustainable development of the "green" additives industry.
Source: Global Plasticization Network