Plastic definition, classification and characteristics

Plastics are synthetic or natural polymer resin as the main material. After adding various additives, to a certain temperature and pressure with a scalable, can be fixed after cooling the shape of a class of materials. Natural or synthetic polymer resin molecules in the molten state, and around the uniform distribution of additive molecules in a process called plastination, having already achieved this process has been called plastination, and has not yet reached, is considered not plasticized.
Plastics according to their own performance to hours can be divided into: You can repeatedly melt forming can maintain their identity and the underlying thermoplastic and can only carry out a fusion of the thermosetting plastic two broad categories. According to their purpose for the use of a wide range of points can be divided into low prices, better overall performance of General Plastics, such as PE, PP, PVC, PS, and amino plastics have good physical and mechanical strength, it may replace the metal used in construction machinery engineering plastics, such as: ABS, nylon, polyester, POM, TPX-1 and so on. As well as in a fine performance, particularly a class of engineering plastics, such as: sex with a particularly good resistance to radiation, temperature, etc. The specialty plastics, such as: poly aryl sulfone, liquid crystal polymers. Thermoplastic resin according to the size of molecular crystal points, can be divided into amorphous thermoplastic polymers and two types of crystalline polymers.
The main characteristics of plastics are: first, the density of small, high specific strength, get a higher yield of the packaging that “the quality of the packaging unit of volume or package size. Second, most of the plastics chemical resistance is good, there are Good acid and alkali resistance, various types of organic-Rong agents, long-term placement, oxidation does not occur. Third, forming easy to consume less power than required for forming steel and other metal materials. Fourth, with good transparency, easy coloring nature. Fifth, has good strength, unit weight of the intensity of high-performance, impact resistance, easy modification. Sixth, the low processing costs. Seventh, excellent insulation.

One Comment

  1. [...] (PCI) apparatus a series of transition metal hydrazide gels (amorphous inorganic polymers) …Plastic definition, classification and characteristics …Plastics are synthetic or natural polymer resin as the main material. After adding various [...]

Leave a Reply

You must be logged in to post a comment.