Plastic sheet is made of plastic sheet. High practicability. The plastic we usually use is not a pure substance, it is made of many materials. Including polymer (or synthetic resin) is the main component of plastic, in addition, in order to improve the performance of the plastic, and add all kinds of auxiliary materials in the polymer, such as packing, plasticizer, lubricant, stabilizing agent, colorant, etc., to become a good performance of plastic.

Synthetic resin: synthetic resin is the main component of plastics, and its contents in plastic are generally 40% ~ 100%. Since the content is large and the properties of the resin often determine the properties of plastics, resin is often regarded as a synonym for plastics.

Packing: fillers are also called fillers, which can improve the strength and heat resistance of plastics and reduce costs. For example, the addition of wood powder to phenolic resin can greatly reduce the cost, making phenolic plastic one of the cheapest plastics, while also significantly improving mechanical strength. Fillers can be divided into organic fillers and inorganic fillers, such as wood powder, rag, paper and various fabric fibers, such as glass fiber, diatomite, asbestos, carbon black, etc.

3. Plasticizer: plasticizer can increase the plasticity and softness of plastic, reduce brittleness and make plastic easy to process. Plasticizer generally can be mixed with resin, non-toxic, odorless, high boiling point organic compound with light and heat stability, the most commonly used is phthalate esters.

4. Stabilizer: in order to prevent the decomposition and destruction of the resin in the process of processing and use, prolong the service life and add stabilizer to plastic. The commonly used are stearic acid salt, epoxy resin etc.

5. Colorant: colorant can make plastic a variety of bright and beautiful colors. Organic dyes and inorganic pigments are used as colorants.

6. Lubricants: the function of lubricant is to prevent plastic from sticking to metal mould when forming, while making plastic surface smooth and beautiful. Common lubricants include stearic acid and calcium and magnesium salts.

Anti-oxidant: prevent plastic from heating or oxidation during hot use, and make plastic yellow and hair crack.

Small number: seven