09-04
2017
NEWS
新闻中心
Commonly used plastic identification methods
- Categories:Plastic Knowledge
- Time of issue:2017-09-04 08:54
(Summary description)1. Density method: examine the density of various plastics, use liquid as the medium, examine the ups and downs of the plastic in the liquid medium, to roughly distinguish the major types of plastics, such as a piece of plastic in water, floating on the surface of the water, it can be concluded that the raw material is not PVC (due to the density of PVC>1). 2. Combustion method: It mainly examines the color of the flame and the smell and smoke emitted during combustion. Generally speaking, the burning flame of polyolefin materials is mostly blue or light blue, the smell is relatively mild and light, and the smoke is white. Most raw materials with benzene or chlorine are easy to emit black smoke and strong smell after burning. In addition, if PE and PP have dripping burning phenomenon, while PVC etc.
Commonly used plastic identification methods
(Summary description)1. Density method: examine the density of various plastics, use liquid as the medium, examine the ups and downs of the plastic in the liquid medium, to roughly distinguish the major types of plastics, such as a piece of plastic in water, floating on the surface of the water, it can be concluded that the raw material is not PVC (due to the density of PVC>1). 2. Combustion method: It mainly examines the color of the flame and the smell and smoke emitted during combustion. Generally speaking, the burning flame of polyolefin materials is mostly blue or light blue, the smell is relatively mild and light, and the smoke is white. Most raw materials with benzene or chlorine are easy to emit black smoke and strong smell after burning. In addition, if PE and PP have dripping burning phenomenon, while PVC etc.
- Categories:Plastic Knowledge
- Time of issue:2017-09-04 08:54
- Views:
Information
1. Density method: examine the density of various plastics, use liquid as the medium, examine the ups and downs of the plastic in the liquid medium, to roughly distinguish the major types of plastics, such as a piece of plastic in water, floating on the surface of the water, it can be concluded that the raw material is not PVC (due to the density of PVC>1).
2. Combustion method: mainly examines the color of the flame and the smell and smoke emitted during combustion. Generally speaking, the burning flame of polyolefin materials is mostly blue or light blue, the smell is relatively mild and light, and the smoke is white. Most raw materials with benzene or chlorine are easy to emit black smoke and strong smell after burning. In addition, such as PE and PP have dripping burning phenomenon, while PVC etc. have no dripping burning, but have self-extinguishing phenomenon.
3. Optical method: mainly examines the transparency of raw materials. Commonly used transparent raw materials are: PS, PC, PMMA, AS; translucent raw materials are: PE, random copolymer PP, homopolymer PP, soft PVC, transparent ABS, etc. The other raw materials are basically opaque.
4. Color discrimination method: Generally speaking, raw materials without additives, if they contain double bonds, the color will be slightly yellow, such as ABS, because of the copolymerization of butadiene, the polymer still contains double bonds after polymerization. Therefore, it will be slightly yellow.
Keyword:
Scan the QR code to read on your phone
Previous：
Introduction of composite membrane
Related News
Jiangmen Dakun Plastic Products Co., Ltd.
Address: No.1 Industrial Zone, Jiao Tou, Jianghai District, Jiangmen City
TEL：0750-3890131
E-mail：dakunplastic@hotmail.com
FAX：0750-3890129
Telephone hotline
Copyright © 2021 Jiangmen Dakun Plastic Products Co., Ltd. 粤ICP备17085273号 Website Construction:www.300.cn jiangmen
