Anti-static EVA foam formula generally consists of the following materials: main ingredient, filling agent, foam agent, bridging agent, foam promoter, lubricant.

Main ingredient, it is very clear, it is EVA and/or PE. And, of course, in order to improve the physical properties of the product, can also be appropriate to add some other materials, such as rubber, POE, and so on, also can even add a little TPR to strengthen certain physical properties. EVA, main index is VA content, its height decide almost everything with EVA foam products performance are directly related. Of course. Some PE can only foam. What specific use main ingredient or depends on the requirements of the product.

Filling agent, general use calcium carbonate or talc powder at present. Its use in and reduce costs, increase product rigidity, etc., can also act as a heat conduction. General with particle size as a quality indicator (water content is, of course, on the one hand), for example 120 mesh, 400 mesh, etc. In principle, the thinner the better, of course, the price will be higher. Maximum dosage in formula I have ever seen, there are 40 PHR, the percentage of consumption as the main ingredient)

Foam agent, commonly used AC series of foam agent, such as AC - 3000 - h, AC series foam agent belongs to the high temperature foam agent, decomposition temperature over 220 degrees. Also has a low foam agent, such as AD - 300, decomposition temperature at 140 degrees, and temperature in the foam agent, etc. Because the price is not big difference, and high temperature foam agent are stable relatively, so now a lot of old do EVA are converted to a high temperature, also have a match. The dosage of the AC, according to the specific ratio

Anti-static EVA foam features:

1. Good antistatic performance: antistatic timeliness for permanent antistatic, is not affected by dry humidity environment;

2. The buffer shock absorption excellent performance: independent and close the closing of the bubble hole;

3. Good electrical conductivity, electrostatic index Ω/sq, 104-109,

4. High temperature resistant, flame retardant;

5. Chemical corrosion resistance, resistance to organic solvent, acid, alkali, etc;

6. No chemical etching: no corrosion of components and packing materials;

7. Heat insulation, sound insulation, wear resistance, not easy to loss;

8. Good secondary processing performance, easy to shape. Compressive strength, wear-resisting performance is good.

Anti-static EVA foam purposes

The LCD panel production assembly line

Mobile phone, 3 g terminal, computer/especially laptops, optoelectronic components, PCB workshop turnover

Easy to generate static electronic products in the transport packaging