Nano-zinc oxide for EVA foam materials
Zinc oxide is often used as a foaming aid in EVA foam materials. It can enhance the activity of vulcanization accelerators, improve the thermal conductivity of rubber, and lower the decomposition temperature of the foaming agent.
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Nano-zinc oxide for EVA foam materials
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Product Details
Use (function)
Zinc oxide is frequently used as a foaming aid in EVA foam materials. It can enhance the activity of vulcanization accelerators, improve the thermal conductivity of rubber, and lower the decomposition temperature of foaming agents. Due to its small particle size, large specific surface area, and high reactivity, nano-zinc oxide, when used as an additive in EVA foam materials, allows for a significant reduction in its dosage. Moreover, it can greatly extend the material’s resistance to aging and enhance its antibacterial properties. RuTai Nanomaterials Co., Ltd. of Jiyuan City offers specialized nano-zinc oxides—such as LT-J845 and LT-J855—for EVA foam materials. These products not only ensure the required activity of zinc oxide as a foaming aid in EVA materials but also substantially reduce the amount of zinc oxide needed. Compared to conventional zinc oxide, they are much more environmentally friendly.
Features (Advantages)
1. The product exhibits superior dispersibility, a uniform particle size distribution, and stable properties. Compared to conventional zinc oxide, this product boasts higher activity and can significantly accelerate the foaming rate of EVA. It markedly enhances the microstructural properties of EVA materials, including foaming density, resilience, mechanical performance, and cell count.
2. The product employs a mechanochemical method, using a carrier as a skeletal support to modify the surface of the particles. This significantly reduces the zinc content of the product and moderately diminishes the activity of the zinc oxide. As a result, the product better meets the process and equipment requirements of the downstream EVA industry, while also achieving greater resource efficiency and enhancing the company’s economic benefits.
3. Supported by intellectual property rights, the product’s content of harmful impurities is significantly lower than the industry standards, resulting in notable improvements to downstream EVA foam materials’ color, appearance, and other product characteristics.
4. The nano-size effect of the product enhances the antibacterial and antimicrobial properties of EVA foam materials, making the materials safer and more environmentally friendly.
Product Metrics
| Project | Indicator | Testing standards | |
| LT-J845 | LT-J855 | ||
| Zinc oxide (ZnO) w/% ≥ | 75 | 70 | GB/T 19589-2004 |
| Volatile matter at 105℃, w/% ≤ | 2 | 2 | |
| Specific surface area / (m²/g) ≥ | 35 | 20 | |
| Lead (Pb) w/% ≤ | 0.008 | 0.008 | |
| Manganese (Mn) w/% ≤ | 0.005 | 0.005 | |
| Copper (Cu) w/% ≤ | 0.003 | 0.003 | |
| Cadmium (Cd) w/% ≤ | 0.035 | 0.035 | |
| Residue on sieve (passing through a 45 μm test sieve) w/% ≤ | 1.0 | 1.0 | |
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