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Beta-crystal PPR pipe fitting and production method thereof

A technology for pipe fittings and crystal nucleating agent, which is applied in the field of chemical building materials, can solve the problems of high viscosity molding of PPR pipe fittings, no antibacterial problem, no toughness problem, etc. The effect of loss and guarantee of hygienic performance

Inactive Publication Date: 2017-02-08
LIAOCHENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Though CN103554673A has improved toughness, there is the problem that heat resistance descends; The antibacterial pipe that CN101307843A provides, but does not relate to toughness problem; CN101265342A has provided composite β crystal form nucleating agent preparation technology, but does not involve to antibacterial problem
In addition, the current patented technology has not yet addressed the problem of high viscosity of PPR pipe fittings and the difficulty of molding

Method used

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  • Beta-crystal PPR pipe fitting and production method thereof

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preparation example Construction

[0021] The invention proposes a preparation method of β-crystal PPR pipe fittings. The materials used include: PPR resin, β-crystal nucleating agent, nanometer material, flow modifier, antibacterial agent, antioxidant, and color masterbatch. The β-crystal nucleating agent is one of calcium stearate / pimelic acid, aromatic amides or rare earths or a compound thereof. The nano-inorganic powder is one of nano-calcium carbonate or zinc oxide or a composite thereof. The flow modifier is one or more mixtures of the following substances: polyethylene wax, paraffin wax, polypropylene wax, oxidized polyethylene wax, montan ester wax, calcium stearate, zinc stearate, silicone A type of lubricant and a fluorine-containing lubricant, a silicone resin or a fluorine-containing rheological agent or a combination thereof. The antibacterial agent is based on zeolite as a carrier, and the antibacterial component is metal ion Ag + or Zn 2+ . The antioxidant is a main and auxiliary antioxidant...

Embodiment 1

[0025] 100 parts of PPR resin, 0.3 part of calcium stearate / pimelic acid, 0.1 part of silver antibacterial agent, 2 parts of nano-calcium carbonate, 0.25 part of silicone lubricant, 0.05 part of antioxidant 1010, 0.05 part of antioxidant 168 parts, 6 parts of white mother. Stir for 5 minutes with a high-speed mixer, and then use an extruder to form a pipe. The properties of the pipe are shown in Table 1.

Embodiment 2

[0027] 100 parts of PPR resin, 0.1 part of aromatic amide and rare earth nucleating agent, 0.3 part of zinc antibacterial agent, 1 part of nano calcium carbonate, 0.3 part of fluoroelastomer, 0.1 part of antioxidant 1010, 0.1 part of antioxidant 168, 6 copies of gray mother. Stir for 5 minutes with a high-speed mixer, and then use an extruder to form a pipe. The properties of the pipe are shown in Table 1.

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Abstract

The invention provides a production method of a beta-crystal PPR pipe fitting, and belongs to the technical field of chemical building materials. The method is used for improving the heat resistance, the impact performance and the processing performances of the PPR pipe fitting. The pipe fitting comprises, by weight, 100 parts of PPR resin, 0.001-2 parts of a calcium stearate / pimelic acid beta-crystal nucleating agent, 0.001-3 parts of aromatic amide, 0.1-10 parts of inorganic nano-powder, 0.01-1 part of a rheological agent, 0.01-3 parts of an inorganic antiseptic, 0.01-0.3 parts of an antioxidant and 1-10 parts of color master batches. The production method comprises the following steps: uniformly mixing the PPR resin, the beta-crystal nucleating agent, nanometer calcium carbonate, the rheological agent, the antioxidant and the color master batches, and carrying out injection molding through an injection machine in order to obtain the beta-crystal PPR pipe fitting.

Description

technical field [0001] The invention relates to a method for preparing a β-crystal PPR pipe fitting, which belongs to the technical field of chemical building materials. Background technique [0002] Random copolymer polypropylene (PPR) pipe fittings, in addition to the general advantages of light weight, corrosion resistance, high strength, no scaling, long service life, etc., also have clean and non-toxic, long-term heat and pressure resistance, good With thermal insulation and energy-saving performance, it is a real green and environmental protection building material product. In addition, it also has the characteristics of convenient connection and installation, and firm connection. [0003] However, PPR pipe fittings also have some problems, such as poor low temperature toughness, heat resistance needs to be improved, and pipe fittings are prone to breed microorganisms and algae, causing secondary pollution. These problems restrict the development of the PPR industry. ...

Claims

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Application Information

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IPC IPC(8): C08L23/14C08K13/06C08K9/12C08K5/098C08K5/092C08K3/26C08K3/22C08K3/08C08K5/134C08K5/526C08K5/20
CPCC08L23/14C08K2201/011C08L2201/08C08L2203/18C08L2205/24C08L83/04C08K13/06C08K9/12C08K5/098C08K5/092C08K2003/265C08K2003/0806C08K5/1345C08K5/526
Inventor 滕谋勇潘海杰葛祥才李玉超战艳虎邓爱霞刘春梅
Owner LIAOCHENG UNIV
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