The role of zinc carbonate basic in EVA
- Mingpai
- 2024-07-11 11:26:20
In EVA (Ethylene-Vinyl Acetate) materials, basic zinc carbonate serves several purposes:
Foaming Promotion and Control: Used extensively in the production of foamed materials like shoe soles, toys, and packaging, basic zinc carbonate acts as a foaming agent or auxiliary, facilitating a uniform distribution of bubbles for a fine and evenly dense foam structure. It aids in creating either closed-cell or open-cell structures through chemical reactions or thermal decomposition that release gases.
Reinforcement and Stabilization: It reinforces the physical properties of EVA, enhancing attributes such as hardness, wear resistance, and tear strength. As a filler, it also improves dimensional stability and heat resistance of EVA products.
Anti-Aging Properties: EVA is prone to degradation from UV radiation, oxygen, and heat. Basic zinc carbonate offers some antioxidant and UV-resistant properties, thereby slowing down the aging process and prolonging product life.
Environmental Friendliness: Compared to certain conventional additives, basic zinc carbonate is regarded as a more environmentally friendly option, aligning with stringent environmental standards and consumer preferences for eco-conscious EVA foam production.
Crosslinking Promotion: In specific EVA formulations, it can assist in crosslinking reactions, reinforcing the polymer network and further enhancing the overall material properties.
Enhanced Transparency: For applications requiring transparency, such as clear films or packaging, carefully selected basic zinc carbonate can maintain or improve the clarity of the final product without compromising other properties.
In summary, basic zinc carbonate is a vital additive in EVA foam and product manufacturing, contributing to the optimization of EVA's performance characteristics across various applications.
