is a stabilizer commonly used in polyvinyl chloride (PVC) manufacturing. Its main function is to enhance the heat resistance, light resistance, and oxidation resistance of PVC materials, thereby extending the service life of PVC products. The ingredients of this stabilizer mainly include calcium carbonate and zinc carbonate, as well as other synergistic additives.
Calcium carbonate zinc stabilizer is used in PVC materials to improve their heat resistance. PVC is prone to decomposition under high temperature conditions, resulting in material performance degradation and even discoloration, deformation, and other problems. Calcium zinc carbonate stabilizer prevents the decomposition reaction by reacting with free radicals in PVC molecules, effectively slowing down the degradation rate of PVC in high-temperature environments, thus maintaining the stability of the material.
Secondly, calcium carbonate zinc stabilizer also plays a key role in the light resistance of PVC products. When PVC products are used outdoors, they will be exposed to ultraviolet rays, which may cause the material to age and change color. Calcium carbonate zinc stabilizer absorbs and disperses ultraviolet rays to prevent them from directly acting on PVC molecules, effectively delaying the aging process of the material, allowing PVC products to maintain stability and appearance quality for a longer period of time in outdoor environments.
In addition, calcium carbonate zinc stabilizer can also improve the antioxidant properties of PVC products. Oxygen is another important factor that causes the aging of PVC materials. Especially during processing and use, the material is easily affected by oxidation. Calcium carbonate zinc stabilizer prevents the oxidation reaction by inhibiting the reaction between oxygen and PVC molecules, effectively delaying the aging process of PVC products and extending their service life.
Generally speaking, the role of calcium carbonate zinc stabilizer in PVC manufacturing is multifaceted, mainly including improving heat resistance, light resistance, and antioxidant properties. This enables PVC products to maintain stable physical and chemical properties under different environments and usage conditions, and thus is widely used in construction, water conservancy, electricity, transportation, and other fields. As concerns about environmental protection and health continue to increase, calcium carbonate and zinc stabilizers, as a more environmentally friendly choice, have increasingly broad application prospects in the manufacturing of PVC products.