The addition of PVC foaming regulator is to ensure the decomposition temperature of PVC foamed products. PVC products need to be foamed. The greater the amount of foaming of the PVC material, the better the foaming effect will make the quality of PVC products better.

Foaming regulators are also called foaming aids. In the production of PVC foam products, the decomposition temperature of the foaming agent is often high, which cannot be compatible with the melting temperature of the resin or the gelation temperature of the plasticizer. Therefore, it is necessary to add a foaming aid (commonly known as an accelerator) to reduce the decomposition temperature of the foaming agent. For commonly used blowing agents such as azodicarbonamide (AC blowing agent), if used in combination with compounds such as lead stearate, cadmium, and zinc, it will promote the decomposition of azodicarbonamide. Due to the low elongation of homopolymer PVC, it is impossible to obtain foamed products with a density of less than 1.0g/cm3.

Under the action of the blowing agent pressure, the outer wall of the molecule is opened in advance. The density of the foam can be lower than 1.0g/cm³ by adding foam modifiers (such as acrylic polymer, styrene polymer). Modifiers can also improve the fluidity, impact strength and surface properties of the melt in the cavity.

PVC material is divided into many steps during processing, and each step has precautions for each step. We need to analyze these processes when we carry out the deep processing of PVC foaming regulator. The steps of PVC foaming regulator during deep processing include mixing, extrusion, sizing, flaring, storage, and application.

Mixing: The mixing process is divided into hot mixing and cold mixing. Hot mixing refers to the physical mixing that is fully carried out in the PVC production process. After adding the PVC foaming regulator, the PVC molecules become uniformly dispersed. The water vapor in the PVC molecules is discharged. The termination temperature of hot mixing is generally set above 110 degrees Celsius. The source of heat is the high-speed rotation of the high-speed mixer to bring the animal materials to high-speed movement. The friction between the materials and the pot wall and the stirring blade generates heat, and the friction between the materials generates heat, which causes the temperature to rise. The temperature setting of this process mainly considers not to use resin to decompose, the water is fully vaporized and volatilized, and the lubricant substances can be melted and dispersed evenly. After the hot mixing, the materials are discharged into the cold mixer to cool down. When the temperature drops to about 40 degrees Celsius, the materials will be discharged. Without this cooling process, the hot materials will accumulate together and the heat will not be dissipated, which will cause the materials to overheat and decompose. .

Extrusion: The temperature involved in the extrusion process of PVC mainly includes the fuselage and the nose. In the fuselage and the nose, the main way to generate temperature is heat absorption. The specific heat source is the friction heat of the fuselage. And external heating, external heating of the head part. In the extrusion process, the endothermic process has a lot to do with temperature and heating time.