The main properties of PVC foaming regulators

PVC foam conditioner everyone is more understanding, in the previous article we also introduced some of the applicable rooms, ah, but also learned that he has some of the characteristics of pure resin processing, and we process to achieve better performance is also inseparable from his use:

1, for hard PVC single and twin screw extrusion, softening point is about 100-117 °C, white powder, the dosage is usually 0.1-0.5 parts. Since polyethylene wax has a large relative molecular mass and low volatility and high melting point, the lubrication effect can be displayed even at high shear rates and temperatures;

2. PVC foaming regulator, no grade group, melting point 57-63 °C. Due to the small viscosity, easy evaporation and low melting point of paraffin melt, it is only suitable for lubrication in a narrow range such as single and twin screw extruder extrusion, and this product is easy to whiten, poor transparency, and the dosage is usually 0.1-0.8 parts;

3, melting point 70-71 °C, slightly yellow particles or white particles, its prevention effect on chromatography scaling is better, the dosage is usually 0.2-0.5 parts, if the amount is too large, it is easy to spray frost;4, oxidized polyethylene wax can improve the dispersion of the color agent, but also improve the extrusion efficiency and lubricity between the metal and the polymer, PVC foaming regulator lubrication efficiency is higher, showing a yellow or white particles or powder, the dosage is usually 0.1-0.5 parts;

5, PVC foaming regulator products without vulcanization pollution, excellent processing and lubricity, melting point 148-155 °C, the dosage is usually 0.1-0.4 parts. It is a white powder that, when combined with basic lead soap and basic lead salt, can increase the geling speed.

　　The above is an introduction to some of the main properties of PVC foaming regulators, and we should also pay attention to the way and method when using it.