In terms of building materials, industrial products, daily necessities, floor leather, floor tiles, artificial leather, pipes, wires and cables, packaging films, bottles, foaming materials, sealing materials, and fibers, PVC was the world`s largest production of general-purpose plastics, and its applications are very widely. Widely used in all aspects
PVC is a white powder with an amorphous structure. The degree of branching is relatively small. The relative density is about 1.4. The glass transition temperature is 77~90°C. It begins to decompose at about 170°C. It has poor stability to light and heat. After prolonged exposure to sunlight, it will decompose to produce hydrogen chloride, and further automatically catalyze the decomposition, causing discoloration, and the physical and mechanical properties also rapidly decline. In actual applications, stabilizers must be added to improve the stability of heat and light.
The production process of PVC Resin SG8 and PVC RESIN SG5 is basically the same, and the production equipment is exactly the same. The main difference lies in the formulation of additives, polymerization temperature, reaction pressure and so on. The reaction temperature and reaction pressure of SG-8 resin have basically reached the working pressure limit of the polymerizer. The reaction requirements are relatively strict, and the requirements on operation, safety, technology, and personnel quality are more stringent, and the resin quality is more difficult to control.
PVC RESIN SG8,Pvc Resin Sg8,Pvc Resin K58,Suspension Pvc Resin Henan Shunbang Chemical Industry CO.,Ltd , https://www.sblubricant.com
The series of flat valve is designed for pneumatic conveying system designed a new series of products, is currently the domestic advanced pneumatic conveying system for the special valve. The series of flat valve opening and closing action is between the valve body and the valve in a non-contact state, and the flat valve is closed, by the valve body and the O-ring seal to seal. The unique design of the internal components of the flat valve realizes the unobstructed passage of gas after the valve core is fully opened. Therefore, the long life of the flat valve. Features: Unobstructed gas flow throughout the valve; opening and closing flexible, between the valve body and the frictionless use of state; Size specifications: gas through the diameter of 25mm to 100mm; pressure 1MPa; long service life. Design features: Piston components unique design: Piston cylindrical surface with a special treatment, so to achieve high hardness and wear resistance. Action test, the piston normally open at 0.3MPa pressure, closed. This article Keywords: valve