How much do you know about the classification and basic knowledge of plastic materials - [Information]

Plastics are a general term for a type of plastic polymeric materials under certain conditions. They are generally divided into thermosetting plastics and thermoplastic plastics according to their hot melting properties. So how much do you know about the classification and basic knowledge of plastic materials? Let’s take a look with the editor.

1. Classification of plastic raw materials

Plastic raw materials are divided into thermoplastic and thermosetting plastics according to the molecular structure of synthetic resins: thermoplastics refer to plastics that are still plasticized by repeated heating: mainly commonly used raw materials such as PE/PP/PVC/PS/ABS/PMMA/POM/PC/PA. Thermosetting plastics mainly refer to plastics made of heat-hardened synthetic resins, such as some phenolic plastics and aminoplastics, which are not commonly used.

According to the application scope, there are mainly general plastics such as PE/PP/PVC/PS, engineering plastics such as ABS/POM/PC/PA, etc. There are also some special plastics such as high temperature and high humidity resistance and corrosion resistance, and other plastics modified for special purposes.

2. Basic knowledge of plastic materials

1. Most plastic raw materials can be recycled, but since the plastic (water outlet material) is brittle than ordinary raw materials, it can only be mixed with new materials (raw materials) together. The maximum proportion should not exceed 25%. The customer's requirements should be based on the principle. Various types of plastic materials have different melting points and different injection molding pressures, so they must not be confused during production.

2. Since plastic products must be matched with colors, plastic raw materials can be divided into: pellet materials, color powder materials, color type materials, and the recent addition of liquids to color in plastic raw materials. The pellet materials are mixed with pigments into the raw materials, and each particle of plastic material has been colored, so the color of the product is stable and uniform. The color powder materials and color type materials are used to mix color or color powder materials, which is low in cost and does not need to store a large amount of colored raw materials. However, the color is unstable and it is difficult to control uniformity in production.

【Classification】

According to thermal and processing performance

Thermoplastics: softened by heat and can be repeatedly heated and molded

Such as polyvinyl chloride plastics, polypropylene plastics

Thermoset plastic: after being heat-cured and shaped, it cannot be heated and melted.

Such as phenolic plastics, urea and formaldehyde plastics

By purpose

General plastic: large output

Such as polyethylene, polypropylene, polyvinyl chloride

Engineering Plastics

Such as polycarbonate, polysulfone, polyphenylene ether, polyamide, polyformaldehyde

Specialty plastics

Such as medical plastics, conductive plastics, high temperature resistant plastics, etc.

The above is the raw material classification and basic knowledge of plastic materials compiled by the editor for everyone. I believe that you will have a certain understanding of this type of product after reading it. I hope it can help you. If you have other questions about the test machine, you can call us through the web page and welcome your call.