One of the main functions of zinc oxide in the production process of shoe materials is to promote foaming. As an important inorganic foaming accelerator, the role of zinc oxide in foaming products is particularly important, especially in PE and EVA. Raw materials in foamed products.
Some companies use a combination of zinc oxide and zinc stearate, but now most companies only use zinc oxide. Because the single use of zinc oxide can also achieve the effect, and the stability of the product is better.
The reason why zinc oxide can be used as a foaming accelerator is that zinc oxide can reduce the decomposition temperature of AC to about 160 degrees, which is convenient for production. Generally, the amount of zinc oxide does not exceed 0.5Phr, and the shrinkage of excessive products will be relatively large.
Too little will make the foaming speed too slow, so it is best not to be lower than 0.2Phr, this is the role of zinc oxide in shoe materials.
EVA foaming formula is generally composed of the following raw materials: main material, filler, foaming agent, bridging agent, foaming accelerator, lubricant.
In order to improve the physical properties of the product, some other materials can be added appropriately, such as rubber, POE, etc., and even a little TPR can be added to strengthen some physical properties.
The main indicator of EVA is the VA content, and its level is directly related to all the properties of EVA foam products.
Disclaimer: The picture materials and articles on this platform come from the Internet, so the copyright belongs to the original author. If there is any infringement on your copyright and interests, please contact us, we will apologize and delete it quickly. Article source: Rubber Technology Network
Latest news
- The Combination and Foaming Process of
- Famous tire enterprise with multiple d
- Ministry of Commerce Initiate a final
- The Effect of Carbon Black on the Cutt
- Stop work orders encounter rising pric
- Lanzhou Petrochemical's carboxylated n
Contact us
- ADD: Room 4210, CEC Business Hall, No. 121-4, Nanjing South Street, Heping District, Shenyang
- TEL: 13644907299
- FAX: 024-25361668
- E-mail: boss@long-green.cn
> Company new