Beta-crystal PPR pipe and preparation method thereof
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A technology for pipes and crystal nucleating agents, applied in the field of chemical building materials, can solve the problems of decreased heat resistance, uninvolved toughness problems, and uninvolved antibacterial problems, so as to reduce melt fracture, meet high-speed processing performance and heat resistance. no loss of effect
Inactive Publication Date: 2016-12-07
LIAOCHENG UNIV
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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 involved the problem of PPR high-speed processing
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preparation example Construction
[0024] The present invention proposes a method for preparing a beta crystal PPR pipe, which adopts the following materials: PPR resin, beta crystal nucleating agent, nanometer material, rheology agent, 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 complex 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 Class lubricants and fluorinated lubricants. According to claim 1, the rheological agent is one of silicone resin or fluorine-containing rheological agent or a composite thereof. Described antibacterial agent, take zeolite as carrier, antibacterial component is metal ion Ag + or Zn 2+ . The antio...
Embodiment 1
[0028] 100 parts of PPR resin, 0.3 part of calcium stearate / pimelic acid, 0.1 part of silver antibacterial agent, 5 parts of nano calcium carbonate, 0.05 part of silicone lubricant, 0.05 part of antioxidant 1010, 0.05 part of antioxidant 168 servings, 6 servings of white mother. After stirring by a high-speed mixer for 5 minutes, the pipe is formed by an extruder. The properties of the pipe are shown in Table 1.
Embodiment 2
[0030] 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, 0.2 part of fluoroelastomer, 0.1 part of antioxidant 1010, 0.1 part of antioxidant 168, 6 servings of grey mother. After stirring by a high-speed mixer for 5 minutes, the pipe is formed by an extruder. The properties of the pipe are shown in Table 1.
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Abstract
The invention provides a preparation method for a beta-crystal PPR pipe, and belongs to the technical field of chemical building materials. The heat resistance and the impact property of the PPR pipe are improved, and the processability of the PPR pipe is improved. The beta-crystal PPR pipe comprises the following components in parts 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, 0.1-15 parts of nano-inorganic powder, 0.01-1 part of a rheological agent, 0.01-1 part of an inorganic antibacterial agent, 0.01-0.3 part of an antioxidant, and 1-10 parts of color masterbatch. When the beta-crystal PPR pipe is prepared, the PPR resin, the beta-crystal nucleating agent, nano calcium carbonate, the rheological agent, the antioxidant and the color masterbatch are uniformly mixed to obtain a mixture, and the mixture is melt-extruded by a single screw extruder, shaped, cooled, pulled, cut and packed to obtain the beta-crystal PPR pipe.
Description
technical field [0001] The invention relates to a preparation method of a beta crystal PPR pipe, belonging to the technical field of chemical building materials. Background technique [0002] In addition to the general advantages of general plastic pipes such as light weight, corrosion resistance, high strength, no scaling, and long service life, the random copolymer polypropylene (PPR) pipe also has clean and non-toxic, long-term heat and pressure resistance , good thermal insulation and energy-saving performance, is a real green building materials products. In addition, it also has the characteristics of convenient system connection and installation, firm connection of pipe fittings, etc., and is currently the most widely used hot and cold water pipe. [0003] However, PPR pipes also have some problems, such as poor low-temperature toughness, heat resistance to be improved, and pipes are easy to breed microorganisms and algae, causing secondary pollution. These problems r...
Claims
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