NINGBO INNO PHARMCHEM CO.,LTD. is a leading supplier of chemical additives, and among our key offerings are derivatives of stearic acid, such as calcium stearate and zinc stearate. These metallic stearates are highly valued in the plastics industry for their specialized functions, acting as critical lubricants and stabilizers that significantly enhance the performance and longevity of plastic products, particularly PVC.

Calcium stearate, formed from the reaction of stearic acid with calcium hydroxide, is widely recognized for its role as an internal lubricant and processing aid in PVC formulations. Its fine, silky powder form allows it to effectively reduce friction within the PVC melt, promoting better flow and easier mold release. More importantly, calcium stearate is an excellent external lubricant, preventing the PVC compound from sticking to hot metal surfaces of processing equipment like extruders and calenders. This improves surface finish and reduces defects. The purchase of calcium stearate is often coupled with stearic acid to achieve synergistic lubricating effects. Additionally, calcium stearate acts as an acid scavenger and a co-stabilizer, contributing to the overall thermal stability of PVC, especially when used in combination with other stabilizers. Its contribution to the improved impact strength and surface gloss of transparent PVC products is noteworthy.

Zinc stearate, another significant derivative, also plays a crucial role, particularly in applications requiring excellent heat stability and as a mold release agent. While it shares lubricating properties with calcium stearate, zinc stearate is particularly effective as a heat stabilizer and can improve the electrical properties of PVC compounds used in wire and cable insulation. It is also widely used in the coatings and paints industry as a flatting agent and in the rubber industry as a processing aid. The synergy between stearic acid and zinc stearate is often leveraged to achieve specific performance characteristics.

These stearate derivatives are not only functional but also contribute to the cost-effectiveness of plastic formulations. Their ability to improve processing efficiency, enhance product durability, and maintain aesthetic qualities makes them indispensable. As manufacturers continually seek to optimize their products and processes, understanding the distinct benefits offered by calcium stearate and zinc stearate, and how to best utilize them in conjunction with stearic acid, is crucial. NINGBO INNO PHARMCHEM CO.,LTD. provides these high-quality stearate derivatives, backed by technical expertise, to help our clients achieve superior results in their plastic manufacturing endeavors. Investing in these additives is investing in the quality and marketability of your final products.