First, the characteristics of Pvc pipe
PVC, the full name of Polyvinylchlorid, the main component is polyvinyl chloride, and other ingredients to enhance its heat resistance, toughness, ductility, etc. is a plastic product synthesized from 43% oil and 57% salt. Compared with other types of plastic products, PVC is more effective in the application of raw materials, reducing fuel consumption. At the same time, the energy consumption of the PVC manufacturing industry is also very low. And in the later stages of the use of PVC products, it can be recycled and converted into other new products or incinerated to obtain energy. PVC will be added to the stabilizer during production, but whether or not the stabilizer is present, only the addition of a stabilizer such as lead salt will cause hidden dangers. But PVC products are mixed, and some small companies use lead salts as stabilizers. The precipitation of lead salts of pvc pipe heat stabilizer directly causes heavy metal pollution in drinking water. Any PVC pipe that uses lead salt stabilizers is buried underground, and the soil around the pipes will be over-standard, so it was banned in 2004.
PVC can be divided into soft PVC and hard PVC. Hard PVC accounts for about 2/3 of the market, and soft PVC accounts for 1/3. Soft PVC is generally used for the surface of floors, ceilings and leather, but because soft PVC contains softener (this is also the difference between soft PVC and hard PVC), it is easy to become brittle and difficult to store, so its scope of use has been limited. Hard PVC does not contain softener, so it has good flexibility, easy to form, is not brittle, non-toxic and non-polluting, and has a long storage time, so it has great development and application value.
Second, the application field of Pvc pipe
The essence of PVC is a vacuum blister film, which is used for surface packaging of various types of panels. Therefore, it is also called decorative film and adhesive film, and is used in many industries such as building materials, packaging, medicine and so on. The building materials industry accounts for the largest proportion, at 60%, followed by the packaging industry, as well as several other small-scale applications.
Third, the identification method of pvc tube:
1: Look at the surface finish and whiteness first.
2: Take the sample to fall, it is easy to break the person is generally high calcium products, of course, to meet your requirements, the price is right, then it is ok.
3: Take the sample with the foot on the side of the tube to see if it can crack, or the elongation at break after cracking.
4: The weather resistance is very troublesome. The most direct way is to take a few days to get the high temperature and high light, to see the surface change rate, but it is a waste of time.
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