[Zinc stearate/calcium stearate supply and sales] What are the stearates that can be used as PVC heat stabilizers?

Stearate is one of the main types of PVC heat stabilizers. It can be used as a lubricant for PVC heat stabilizers and is widely used in various soft and hard products. They effectively combine with HCL degraded during processing, thereby slowing down the further degradation of PVC and stabilizing the development of the PVC plastic industry, and their usage is increasing day by day.

1. The individual varieties of stearate PVC heat stabilizers are:

Zinc stearate : Zinc stearate is a white powder, insoluble in water. Mainly used as lubricant and release agent for styrene resin, phenolic resin and amino resin. At the same time, it also has the functions of vulcanization activator and softener in rubber. Can be used as heat stabilizer for PVC resin. It is non-toxic and transparent. Large dosage can easily cause “zinc burning” and make the product black. It is often used together with calcium, barium, etc.;

Calcium stearate: Calcium stearate is a white light crystalline powder. The melting point is 179~180℃, and it will decompose under high heat. Insoluble in water, cold ethanol and ether, soluble in hot benzene, toluene and turpentine, slightly soluble in hot ethanol and ether. Used as lubricant, sliding agent, heat stabilizer, release agent, accelerator, etc. in plastics, machinery, rubber, paint and ink and other industries. Good processing performance, low thermal stability, non-toxic;

Barium stearate: good long-term stability, transparent, but partially limited by certain environmental protection directives;

Hard Cadmium fatty acid: transparent, strong ability to inhibit initial discoloration, toxic.

2. Composite varieties are:

Calcium/zinc, barium/zinc, barium/cadmium , barium/cadmium/zinc, bring many benefits to many other products (polymer products), three aspects:

Acid neutralizer in polyolefins;

Right It directly contributes to the color stability and anti-corrosion of polyolefin;

Lubricating effect: improves the extrusion molding (including: film, fiber) and compression molding of polyolefin, polyamide, polystyrene and rubber. Processability;

Mold release: for thermoplastics, rubber and thermosetting products, such as polyurethane and unsaturated polyester.

3. Other applications:

Pigment dispersant, paper coating agent, can also be used Used in metallurgical powders, cosmetics, fibers, medicines, etc.