Thermosetting & thermoplastics

Thermosetting plastics are plastics that need to be heated to solidify during processing. That is, two different plastics are mixed and injected into the mold at the same time. After the reaction is caused by heating, the single molecules are turned into a network three-dimensional structure, that is, after heating, they will The advantage of hardened plastic is that it has high heat resistance, but the disadvantage is that it is not easy to recycle. Thermosetting plastics include FRP bathtubs, tableware, etc.

Thermoplastics are plastics that melt after heating. Solid plastic particles are heated, and then injected into the mold after the plastic melts. After the finished product cools and solidifies, the product is completed. The advantage is that the product can be recycled, but the disadvantage is that it cannot be recycled. Heat-resistant, thermoplastic plastics include PE, PP, PS, PVC, ABS, PA, PC, etc.

Each of us has our own ID card, which can identify each person's identity. Can plastic also be identified? After purchasing a plastic product, if you look carefully, you will see a serial number on the casing of the product. This is a plastic identification code developed to distinguish the type of plastic. This identification code is universal all over the world. It is made of A triangle composed of three clockwise rotating arrows, with a number representing each material marked in the middle. There are currently 7 identification codes. In addition to allowing us to understand plastic materials through coding, these identification codes most importantly assist recycling and can subdivide types and Reuse.