Introduction to basic information of high temperature resistant additives

High temperature resistant additives generally refer to coating additives that can withstand more than 250 ° C. high temperature resistant additives are used in powder coatings and can achieve high temperature resistance of 270 ° C. It can be used not only in coatings, but also in coating resins to improve the high temperature resistance and oxidation resistance of the resin.

Temperature resistance mechanism:

1. Use imported high-temperature adhesive as base material

2. Add imported nano high temperature resistant additives

3. Promote the deep crosslinking of vinyl and improve the stability of molecular structure

4. Neutralize and eliminate the damage of sulfide product (pH ≤ 7) to - si-o-bond at high temperature

5. Oxidation treatment of metal and impurity on chemical bond at high temperature

6. Absorb ultraviolet rays and shield thermal energy (air wavelength)

Characteristics of high temperature resistant additives:

1. Adding a temperature resistant agent to the silica gel can significantly improve the high temperature resistance of the silica gel, and the high temperature resistance of the silica gel can be increased to about 300 ° and the physical property after high temperature aging is excellent

2. The effect on hardness is very small. The hardness increases by about 1-2 degrees (a) with the dosage of 2-3%

3. Adding temperature resistant agent to silica gel can significantly improve the resilience of silica gel products

4. It has no effect on other physical properties and subsequent processing of silica gel products

Principle of high temperature resistant additives:

When the formulation with polymer processing aids is plasticized and extruded in the extruder, under the action of potential difference, the fluoropolymer moves to the outer layer of the melt and adheres to the metal surface, forming a lubricating layer between the metal wall and the polymer melt (it takes 1-3 hours to form the lubricating layer, depending on the size of the machine). In the continuous extrusion process, the coating is in dynamic equilibrium. When the dynamic balance is stable, the extrusion process and product quality will be stable.