PVC Pipes Are Very Familiar To Everyone. Do You Know That UPVC?
PVC pipe material everybody knows very well, so UPVC do you know? UPVC is also called PVCU, usually called hard PVC. It is an amorphous thermoplastic resin made from vinyl chloride monomer and a certain additive (such as stabilizers, lubricants, filling agents, etc.). In addition to additives, the method of blending modification with other resins is also applied, so that it has obvious practical value. These resins have CPVC, PE, ABS, EVA, MBS and so on. The melt viscosity of UPVC is high and its fluidity is poor. Even if the injection pressure and melt temperature are increased, the fluidity change is not large. In addition, the molding temperature of the resin is very close to the thermal decomposition temperature, and the temperature range of forming is very narrow, which is a difficult material to form.
How to identify PVC-U and UPVC? The difference in pipe material is:
It affects the quality of pipes, materials and equipments. If these factors are the same between domestic and foreign manufacturers.
1: first looks at the surface finish, and the whiteness.
2: take the sample to throw, easy to break is generally high calcium products, of course, to meet your requirements, the price is appropriate.
3: take the sample and step on the edge of the pipe to see if it can split, or the elongation at break after cracking. (generally, try to set up the pipeline first, ha ha, otherwise people will not let you step on it).
4: resistance to Hou. The most direct way is to get high temperature and high light for a few days to see the surface change rate, but it's a waste of time. It's good to see the first 3 items.
The essence of PVC insulation casing is a vacuum plastic film, which is used for the surface packing of various panels. So it is also called decorative film and adhesive film. It is used in many industries, such as building materials, packaging, medicine and so on. The largest proportion of building materials industry is sixty percent, followed by the packaging industry, as well as a number of other small applications.
PVC insulated bushing can be divided into two kinds: PVC water supply pipe and drain pipe. It can be used for municipal water supply and drainage, industrial water supply and drainage, civil water supply and drainage, irrigation and vegetation watering.