CPVC (chlorinated polyethylene) a lot of uses, such as reinforcement filling system, the stability of the protective system, and so on, we come to know about chlorinated polyethylene plasticized system. Ester plasticizer is the most commonly used plasticizer in CPE, such as phthalic acid two octyl ester (DOP) and adipic acid octyl ester (DOA), the solubility parameter of is close to CM, and its compatibility is good.
DOA, DOS can be used in the rubber material to give good cold resistance. CPVC pipe fittings to introduce to you the characteristics of several pipe: PEX tube heat and cold resistance excellent, high temperature high strength, excellent low temperature toughness: creep resistance heating without melting the extraordinary creep data is an important basis for product design and engineering material, compared with the traditional metal materials, plastic strain behavior there are obvious dependence on loading time and temperature, the creep characteristics of PEX tube is almost the common plastic pipe in pipe is one of the most ideal.
Precautions for CPVC pipe processing:
1, the requirements of heat stabilizer due to the high temperature of CPVC processing, the formula for the amount of heat stabilizer is much higher than PVC, obviously, only using the traditional three salt, the salt heat stabilizer is not suitable for two. At present, the more mature heat stabilizer is a series of lead compound with lubrication system.
The 2 requirement of lubricant due to the melt viscosity of CPVC is very high, especially in the morning to the injection molding melt fracture, so using only the traditional paraffin wax, stearic acid and metal soap lubricating system is not appropriate. In the extrusion process of CPVC, due to the presence of a metal surface which tends to adhere to the hot post processing equipment (especially the die and die), in order to eliminate the adhesion, CPVC must be added to the formula. The outer lubricant and the CPVC resin should not be miscible.
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