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Self-cleaning antibacterial beta-crystal form PP-R cold-hot water pipe material and preparation method thereof

A PP-R, antibacterial and self-cleaning technology, applied to pipes, rigid pipes, mechanical equipment, etc., can solve the problems of short service life, no self-cleaning and antibacterial functions, high temperature resistance, poor pressure resistance, etc., and achieve high temperature resistance Improved performance, less brittle cracking, good impact strength at room temperature and low temperature

Inactive Publication Date: 2012-11-28
HUBEI YANGTIAN PLASTIC PROD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of this invention is to address the shortcomings of the current common PPR water pipes: poor high temperature resistance and pressure resistance during long-term use, can not be used in high temperature heating, heating engineering, short service life, no self-cleaning and antibacterial functions and other shortcomings

Method used

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  • Self-cleaning antibacterial beta-crystal form PP-R cold-hot water pipe material and preparation method thereof
  • Self-cleaning antibacterial beta-crystal form PP-R cold-hot water pipe material and preparation method thereof
  • Self-cleaning antibacterial beta-crystal form PP-R cold-hot water pipe material and preparation method thereof

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preparation example Construction

[0043]A preparation method of antibacterial self-cleaning beta crystal PP-R cold and hot water pipe fittings, the preparation method comprises the following steps in sequence:

[0044] The first step: the preparation of composite β crystal nucleating agent: first take 5-10Kg lanthanum oxide, 5-10Kg pimelic acid and add it to the reactor, and react at a constant temperature of 55-65 ℃ for 8-15 minutes, and then heat up to Continue the reaction at 105-115°C for 1.5-2.5 hours, and cool to room temperature; put the material into the mixer, add 5-10Kg calcium stearate and 5-10Kg pimelic acid, at 20-30°C and the mixer rotation speed 200- Under the condition of 300 rpm, react for 3-5 minutes to generate structural formula La 3+ Ca 2+ [OOC(CH2) 5 COO] substance, then add 10-20Kg nano calcium carbonate, mix for 2-3 minutes, and obtain the structural formula of CaCO 3 / La 3+ Ca 2+ [OOC(CH2) 5 COO] complex β crystal nucleating agent.

[0045] The second step: preparation of βPP-...

Embodiment 1

[0075] Example 1: A preparation method of antibacterial self-cleaning beta crystal PP-R hot and cold water pipes, the preparation method comprises the following steps in sequence:

[0076] The first step: preparation of composite β crystal nucleating agent: first add 5Kg of lanthanum oxide and 5Kg of pimelic acid into the reactor, react at a constant temperature of 60 °C for 10 minutes, then heat up to 110 °C and continue the reaction for 2 hours, cool down to room temperature; put the material into the mixer, add 5Kg calcium stearate, 5Kg pimelic acid, the mixer speed is 200-300 rev / min, the mixing temperature is 20-30 ° C, and the mixing is 3-5 minutes, the resulting structural formula is La 3+ Ca 2+ [OOC(CH2) 5 COO] material, then add 10Kg of nano calcium carbonate, mix for 2-3 minutes, prepare a composite β crystal nucleating agent, the structural formula is CaCO 3 / La 3+ Ca 2+ [OOC(CH2) 5 COO].

[0077] The second step: preparation of βPP-R resin raw materials: f...

Embodiment 2

[0086] With embodiment 1, difference is: first get 10Kg lanthanum oxide, 10Kg pimelic acid and join in the reactor, then add 10Kg calcium stearate, 10Kg pimelic acid, then add 20Kg nano calcium carbonate; Second step: 100Kg PP-R4220, 2Kg prepared β crystal nucleating agent, 300g antioxidant 1010, 300g antioxidant DSTDP, 50g No. 10 white oil; third step: 12Kg zinc nitrate, 12Kg silver nitrate. 94Kg nanoporous titanium dioxide. The prepared 118Kg composite antibacterial agent, 6Kg polypropylene wax, 230KgβPP-R resin raw material particles; the fourth step: 100KgβPP-R resin raw material, 3Kg composite antibacterial masterbatch, 0.4Kg polypropylene wax, 0.3Kg methyl phenyl silicone oil , 1Kg superfine talcum powder.

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Abstract

The invention relates to a self-cleaning antibacterial beta-crystal form PP-R cold-hot water pipe material. The preparation method comprises the following steps of mixing calcium stearate and lanthana, adding pimelic acid into the mixture to cause a reaction, then adding nano-calcium carbonate into the reaction products obtained from the previous step and stirring uniformly to obtain a composite beta-crystal form nucleating agent, mixing orderly PP-R4220 resin, white oil 10, the composite beta-crystal form nucleating agent and anti-oxidants to produce a mixture, feeding the mixture into a parallel double screw extruder to produce beta PP-R resin particles, adding a silver ion salt and a zinc ion salt into nano-titanium dioxide, then mixing the nano-titanium dioxide, the beta PP-R resin particles and poly propylene wax to form a mixture, feeding the mixture into a parallel double screw extruder to produce a composite antibacterial mother material, and mixing uniformly the beta PP-R resin particles, the composite antibacterial mother material, poly propylene wax, methyl phenyl silicone oil and ultra -fine talc powder to form a mixture, feeding the mixture into an extruder or an injection machine to produce a self-cleaning antibacterial beta-crystal form PP-R cold-hot water pipe material. The material has the advantages of high usage temperature of 95 DEG C, high compressive strength, high thermal deformation temperature, high Vicat softening point, good self-clean performance and antibacterial effects.

Description

technical field [0001] The invention relates to a polymer material polypropylene cold and hot water pipe and a preparation method thereof. The prepared antibacterial self-cleaning β crystal form βPP-R cold and hot water pipe is mainly used for heating, heating, and domestic drinking water pipes at temperatures below 100°C. Under construction. Background technique [0002] Random copolymerized polypropylene pipes, namely PPR pipes, are mainly used as water pipe materials for hot and cold water systems in buildings, including central heating systems; heating systems in buildings, including floors, wall panels and radiant heating systems; In the pure water supply system for direct drinking, it has strong advantages over galvanized pipes, PVC pipes, aluminum-plastic composite pipes, copper pipes and stainless steel pipes, and is the mainstream product in the current market. However, PPR pipes have their own shortcomings, mainly high temperature resistance, poor pressure resista...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/14C08K13/02C08K5/098C08K3/26C08K3/22C08K3/34C08K3/28C08K3/30F16L9/12B29C47/92B29C45/78B29C48/92
CPCB29C48/0022B29C48/04B29C48/40B29C48/875B29C48/92B29C2948/92704B29C2948/92895
Inventor 胡承鹏牛正
Owner HUBEI YANGTIAN PLASTIC PROD CO LTD
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