PVC plastic production, most of the film used for processing carbon and hydrogen as the main component, chlorine content (about 57% weight) and carbon, the presence of chlorine in the molecule makes PVC plastic not only in the production process, but also makes it more widely used, such as: beauty industry, electrical industry and so on. Because chlorine can make it compatible with other materials, chlorine content also contributes to PVC flame retardancy. PVC materials can be molded by many technologies and use very little energy to make the final product form. The PVC polymer is chemically stable. PVC formulations are widely used, including the most sensitive areas, such as medical devices, buildings, automobiles and cables.
PVC, PE, PP and PS are universal plastics. These materials have been used in various fields for the application of plastic packaging. In the PVC raw materials which are mainly discussed in this article, it has an amorphous structure of polar chlorine atoms in its molecular structure. The structure of chlorine atoms and amorphous molecules is undivided. Although plastics look very similar in their daily use environment, PVC has completely different properties and functions compared to the alkene plastics that have only carbon atoms and hydrogen atoms in the molecular structure. The molecular structural chemical stability of general plastics is due to substances containing halogens, such as chlorine and fluorine, which have flame retardancy, durability and oil resistance and chemical resistance.
Flame retardancy of PVC blister: PVC has excellent flame retardancy even in the absence of flame retardant due to its chlorine content. For example, the ignition temperature of PVC is as high as 455 degrees centigrade. Therefore, PVC blister is a substitute for some other plastic materials in some specific fields. In addition, the heat released from combustion of PVC material is significantly lower than that of other materials, such as PE and PP. Therefore, even when burning, PVC propagate less flame heat to nearby materials.
PVC durability of plastic suction: under normal service conditions, the most influential factors on durability of materials are affected by atmospheric oxygen. PVC, which has the molecular structure of chlorine atoms combined with other carbon chains, has high oxidation resistance and maintains its properties for a long time. Other general-purpose plastics with only carbon and hydrogen structures are more susceptible to oxidative degradation during extended service conditions, such as repeated recirculation. The results of the 35 years underground PVC pipeline survey conducted by the Japan PVC Pipe Association show that compared with the new German pipeline, its performance has not deteriorated and the strength is the same. German studies have shown that they have been excavated for more than 60 years of buried pipelines, and the test results show that these PVC pipes are still in good performance, and they are expected to be able to use them for 50 years. PVC blister contrast PET blister, PP blister with a longer storage time. According to our test, it is proved that under the same temperature, PVC blister and PET blister, PS blister and so on in the same environment. After a year of storage, compared to them, it is obvious that some of the materials have been weathered and easily broken, but PVC is almost not affected and can still be used normally.
The blister used by PVC is not limited to the packaging industry. Many cars or large spare parts are made of thick plastic blister produced by PVC. Because PVC has some obvious features above, in other fields, PVC blister can not be replaced by other plastics.
