Polypropylene silencing pipe master batch, preparation method and use method therefor

Abstract

The invention provides a polypropylene silencing pipe master batch, a preparation method and a use method therefor. The polypropylene silencing pipe master batch includes, by weight, 5-25% of polypropylene resin, 5-15% of a toughening resin, 30-45% of a first inorganic powder, 25-35% of a second inorganic powder, 4-7% of a dispersing agent, 2-4% of a lubricant and 0.5-1.5% of a coupling agent. The preparation method includes the steps of mixing and stirring the polypropylene resin, the toughening resin and the lubricant uniformly, adding the mixed components to a uniformly-stirred mixture of the two inorganic powders and the coupling agent, and adding the dispersing agent with uniform stirring, and performing extrusion and mixing, performing mould surface granule cutting, and air-cooling and sieving granules to obtain the master batch. A product, which is prepared from the polypropylene noise reduction pipe master batch and homo-polypropylene in a mixed injection moulding manner, is low in cost, is excellent in mechanical performance and high in anti-impact strength, and can adapt harsh weather conditions and complex environment demands.

Description

technical field [0001] The invention relates to a polypropylene material and a preparation method thereof, in particular to a polypropylene silent tube masterbatch, a preparation method and a use method thereof. Background technique [0002] In the past, most of the drainage pipes used in buildings were cast iron pipes and PVC pipes. Cast iron pipes generally had the disadvantages of large proportion, high energy consumption, easy corrosion, short life (10-20 years), inconvenient construction and difficult maintenance; while PVC pipe drainage The noise is large, and due to the toxicity of the PVC material itself, it will cause adverse effects on the environment, and the manufacturing cost of non-toxic PVC is too high, which is not conducive to popularization and use. [0003] Chinese invention patent CN201310569379 discloses a polypropylene silent tube material, adding inorganic sound-absorbing materials such as barium sulfate and calcium sulfate to polypropylene to realize ...

AI Technical Summary

Problems solved by technology

However, the polypropylene silent material prepared by this method has low mechanical properties and low tensile strength, especially at room temperature and low temperature environment, and has poor impact strength, so it has relatively large limitations in application.

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