2014年5月6日星期二

WSD intenal lubricant of some simple analysis and presentation

Lubricants can be divided into two kinds of external lubricant lubricant inside and outside lubricant role is mainly to improve the friction polymer melt processing equipment with hot metal surfaces. It is less compatible with the polymer is easy to migrate out from the melt , so the lubrication can be formed in a thin layer of plastic and metal melt  Flame retardant interface . And lubricants have good compatibility with the polymer , it serves to reduce the effect of cohesion between the polymer molecules within the  polymer , intenal lubricant to improve the plastic melt in the heat of friction and melt flowability. Commonly used lubricants are stearic acid and salts thereof outside ; internal lubricant is a low molecular weight polymer. Function of some other lubricants . intenal lubricant Each lubricant has actually can achieve a required role in internal and  PVC plasticizer 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 . PVC efficient composite light lubricant is a new and efficient PVC composite lubricant and processing aids and part performance , the main component of the composite of polar / non-polar and linear / branched polyolefins and copolymers . At the same time , helping to accelerate the plasticized PVC resin to improve the extrusion rate.
PVC efficient composite light lubricant purposes: as PVC external lubricant and metal stripping agent / both processing aids ; transparent PVC products , PVC resin with excellent compatibility and high efficiency external lubrication
The actual performance of the lubricant with  PVC flame retardant a variety of plastic materials , such as kneading , the rolling process to prevent adhesion of the polymer cartridge suppressing friction and heat, and the load torque decreases kneading , thereby preventing the polymer material thermal degradation . In the extrusion molding , to improve flowability , the polymer material and to improve adhesion of the barrel and the die , to prevent and reduce retentate . Another film but also to improve the appearance and gloss.