A preparation method of super-tough rigid polyvinyl chloride pipe compounding material

Abstract

The invention discloses a preparation method for a super-tough rigid polyvinyl chloride pipe mixing material. The method comprises the following steps: adding 100 parts by weight of polyvinyl chloride, 4-10 parts by weight of an acrylonitrile-butadiene-styrene terpolymer, 1-2 parts by weight of methyl methacrylate, 0.2-0.5 part by weight of sodium dodecyl sulfate and 200 parts by weight of water into a reactor with cooling water and nitrogen gas inlets and outlets, introducing a nitrogen gas for 10 min, starting an ultrasonic generator, performing ultrasonic treatment for 20-30 min, wherein reaction temperature is 20-30 DEG C, after the reaction is completed, performing filtration, and performing drying; and adding the dried material into a high-speed mixing machine, adding 10-20 parts ofnano calcium carbonate, 1-3 parts by weight of a stabilizer, 1-3 parts by weight of an acrylate processing auxiliary agent, 1-3 parts by weight of an internal lubricant and 0.3-1 part by weight of anexternal lubricant in sequence, performing mixing, when temperature is 110-120 DEG C, discharging a material, and performing cooling to obtain the super-tough rigid polyvinyl chloride pipe mixing material. The mixing material disclosed by the invention can be used for extruding a rigid polyvinyl chloride pipe with high toughness, low costs, excellent comprehensive mechanical properties, and good heat resistance and weather resistance.

Description

technical field [0001] The invention relates to a method for preparing special materials for plastic pipes, in particular to a method for compounding materials for super-tough rigid polyvinyl chloride pipes. Background technique [0002] Among all plastic pipes, PVC-U plastic pipes have the longest history of use, and their output accounts for about half of all plastic pipes. However, in daily engineering applications, the impact resistance performance is poor, so that there are many unsafe factors in the application process, resulting in frequent accidents when using PVC-U pipes. This reflects that the disadvantages of PVC-U pipes are high brittleness, Poor cracking impact resistance. [0003] There are two ways to improve PVC pipes at home and abroad, one is to obtain super-tough pipes through blending modification, which is called PVC-M, and the other is through directional modification, which is called PVC-O. Among them, the PVC-M pipe prepared by blending modification...

AI Technical Summary

Problems solved by technology

However, there are unsaturated double bonds in ABS, but the existence of unsaturated double bonds affects the weather resistance of the elastomer, and then affects the mechanical properties of the color of the composite material.

In addition, ABS high rubber powder contains more elastomer components, which also affects the compatibility with PVC

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