Key points in the selection of blowing agent

1. The temperature range of the gas produced by decomposition should be narrow
2. The speed of gas release should be fast, and the gas generation rate should be controllable
3. The released gas should be non-toxic, non-corrosive, non-combustible, with nitrogen is best carbon dioxide can also be used, you can also test nitrogen dioxide, but nitrogen dioxide gas is corrosive, it is best not to use
4. The chemical foaming agent should be easy to disperse uniformly, and it is best to be mixed with plastic.
5. Low price, stable storage, non-toxic.
6. The residue after decomposition should be non-toxic, colorless, odorless, and will not affect the physical, chemical and mechanical properties of the plastic, and is chemically inert, which does not affect the melting rate and solidification of the plastic.
7. Decomposition should not be exothermic in large quantities, which does not affect the melting and solidification of plastics.
8. The residue after decomposition has good compatibility with the resin, and no residue frosting or dialysis occurs.
9. The decomposition temperature of the foaming agent should be consistent with the melting temperature of the resin.