Composite modified polycarbonate material for water supply pipe insert and preparation method thereof

Abstract

The invention discloses a composite modified polyphenylene sulfide material for a water supply pipe insert and a preparation method thereof. The material comprises the following ingredients: PC containing 30% of glass fiber, CaCO3 / MBS / UV-531copolymer mixture, carbon black color masterbatch, and white oil. The preparation method comprises the following steps: drying a blend of PC containing 30% of glass fiber, CaCO3 / MBS / UV-531copolymer mixture, carbon black color masterbatch, and white oil in a mixing drier, then putting the dried blend into an injection machine for injection molding to prepare the composite modified polyphenylene sulfide material for the water supply pipe insert. The prepared material of the invention has obviously better mechanical properties and thermostability than common polycarbonate materials and polycarbonate materials containing 30% of glass fiber, is a modified high-molecular engineering material with comprehensive performance and excellent quality substituting for metal materials, and can be applied in wide range of areas.

Description

technical field [0001] The invention relates to the technical field of engineering plastics, in particular to a composite modified polycarbonate material used for preparing inner parts of water supply pipe fittings and a preparation method thereof. Background technique [0002] In the prior art, the inner parts of the water supply pipe fittings (see GB / T18742.3-2002 for details) embedded in the polypropylene pipe fittings used to transmit hot and cold domestic water are usually made of brass pipe fittings that are machined and then plated with chrome or nickel. Prepared. However, brass water supply pipe inserts have the following disadvantages when used in domestic water supply pipes for hot and cold domestic water: [0003] 1. Since the outer surface of the inner part of the brass water supply pipe fitting is plated with chrome or nickel, this is not conducive to the control of the content of heavy metal chromium or nickel in drinking water. Long-term drinking of water tha...

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Problems solved by technology

[0003] 1. Since the outer surface of the inner part of the brass water supply pipe fitting is plated with chrome or nickel, this is not conducive to the control of the content of heavy metal chromium or nickel in drinking water. Long-term drinking of water that is in contact with the above-mentioned inner part will threaten to human health

[0004] 2. The production and processing process of brass water supply pipe fittings has high energy consumption, low yield, and the electroplating process pollutes the environment. The entire production and processing process is not environmentally friendly

[0005] 3. Since the above water supply pipe fittings are made of brass, the processing cost is high, and a large amount of precious copper resources are also consumed

[0006] 4. Due to the large difference in thermal deformation rate between the inner parts of the brass water supply pipe fittings and the polypropylene pipe fittings, after long-term use, the surface of the inner parts of the water supply pipe fittings is easily oxidized, resulting in the difference between the inner parts of the water supply pipe fittings and the polypropylene pipe fittings. water leakage at the contact

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