In actual blending, stabilizers not only meet the needs of thermal stability, but also often require excellent processability, weather resistance, initial coloring and light stability, and also have strict requirements on its odor and viscosity.
Stabilizers are generally used in PVC products, including pipes, sheets, blow-molded products, injection-molded parts, foam products, paste resins and so on.
In the PVC industry, a single metal soap compound is rarely used, usually several metal soap compounds. This combination is not a simple addition of properties, but uses the synergistic effect between components.
The stabilizer of composite metal soap generally includes stabilizer body (i.e. metal soap), solvent (organic solvent, plasticizer, liquid nonmetal stabilizer) and so on. ) and functional additives (auxiliary stabilizers, transparency improvers, light stabilizers, lubricants, etc.). ).
According to the morphology, it can be divided into solid compounds and liquid compounds, and according to the main components, it can be divided into calcium/zinc composite stabilizer, calcium/zinc/hydrotalcite composite stabilizer, barium/cadmium composite stabilizer, barium/zinc composite stabilizer and so on.
Calcium-zinc/hydrotalcite composite stabilizer plays an important role in replacing toxic metals because of its non-toxicity.
Organotin stabilizer can be used in bottles, containers, corrugated cardboard, all kinds of hard packaging containers, hoses, profiles, films and so on.
The lead salt stabilizer is especially suitable for high-temperature processing, and is used for various opaque soft and hard products and cable materials, such as various pipes, plates, indoor and outdoor profiles, foamed plastics, artificial leather, wires, cables, records, covered electrode, etc.