Pvc Stabilizer Industry

What Is Usually Used As PVC Stabilizer？

6-amino-1,3-dimethyluracil is usually used as PVC stabilizer

Product function principle:

The melting point of 6-amino-1,3-dimethyluracil (DMAU for short) is as high as over 290°C, and the weight loss when heated at 200°C is less than 1%. Its own characteristics can adapt to the PVC production process. DMAU can absorb HCl produced during the PVC production process and can also replace unstable chlorine atoms.

DMAU and ZnSt2:

When DMAU and ZnSt2 are used together, DMAU can react with ZnCl2 to form a metal complex, which deactivates ZnCl2, prevents "zinc burning", and greatly enhances the long-term stability of PVC samples; it contains DMAU/ZnSt2 composite stabilizer, regardless of Both initial whiteness and long-term stability are better than those containing CaSt2/ZnSt2 composite stabilizer. When DMAU and ZnSt2 are used together, it has a good system stabilization effect, which is better than the synergistic effect currently commonly used in industry.

DMAU and Hydrotalcite:

DMAU and hydrotalcite are used at the same time. In the calcium-zinc stabilizer formula, adding 3-4% DMAU and 8-10% hydrotalcite can better suppress the initial coloration of PVC, and the formula is more economical and reliable.

DMAU and β-diketone:

DMAU and β-diketone are both emerging organic stabilizers. When compared individually, DMAU is superior in inhibiting initial coloration and long-term thermal stability. In the actual production process, DMAU can completely replace β-diketone or be used together with β-diketone.