Introduction of plastic lubricants

 Plastic lubricants typically melt after the polymer has a higher viscosity, in the process, the molten polymer through the slit in the gate channel, etc., bound to a polymer melt processing machine with the friction surface some of the processing of the polymer in the friction is very unfavorable, so that the friction is reduced melt flow, and cause severe friction film surface becomes rough, or the lack of luster appears rhyolite. To do this, need to be added in order to improve lubricity, reduce friction and adhesion properties for the purpose of lowering the interfacial agents. This is the plastic lubricants. Plastic lubricants in addition to Plastic lubricants the fluidity, the accelerator may be from a melt, anti-adhesion and anti-static agents, slip agents and the like effect. Plastic lubricants can be divided into two kinds of external lubricant lubricants and internal and external lubricant role is mainly to improve the friction polymer melt processing equipment with hot metal surfaces. Plastic lubricants poor compatibility with the polymer is easy to migrate out from the melt, so the lubrication can be formed in the plastic sheet with the metal melt interface. Internal lubricants have good compatibility with the polymer properties, which serve to reduce the PVC lubricant  of cohesion between the polymer molecules within the polymer, thereby improving the internal friction of the plastic melt of the heat and melt flowability. Commonly used lubricants are stearic acid and its salts outside; internal lubricant is a low molecular weight polymer. Some lubricants have other functions. Each lubricant has actually can achieve a required role, internal and external lubrication always together, but in a way more prominent. A lubricant with different polymers under different processing conditions or exhibit different lubrication, such as high temperature, high pressure, the lubricant will be squeezed out of the inside and outside of the lubricant becomes.