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A kind of preparation method of ppr pipe with stainless steel effect

A technology of stainless steel and stainless steel powder, applied in fiber processing, textile and papermaking, fiber type and other directions, can solve the problems of single visual effect and poor low temperature toughness of PPR pipe, and achieve the effect of inhibiting agglomeration, enhancing mechanical properties and resisting cracking.

Active Publication Date: 2020-09-08
江西陈氏科技集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: to solve the technical problems of poor low-temperature toughness and single visual effect of existing PPR pipes, to provide a preparation method of PPR pipes with stainless steel effect

Method used

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  • A kind of preparation method of ppr pipe with stainless steel effect

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Experimental program
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Embodiment 1

[0032] This embodiment provides a method for preparing a PPR pipe with a stainless steel effect, comprising the following steps:

[0033] Prepare the following components by weight: 100 parts of PPR, 22 parts of 400-mesh stainless steel powder, 8 parts of acidic dispersant, 3 parts of alkaline dispersant, 7 parts of maleic anhydride grafted EPDM rubber, and 8 parts of polypropylene fiber , 1 part of coupling agent, 2 parts of antioxidant; The acidic dispersant is dodecanoic acid, the basic dispersant is octylamine, and the grafting rate of the maleic anhydride grafted EPDM rubber is is 0.5%, the tensile strength of the polypropylene fiber is 500Mpa, the coupling agent is γ-(2,3-epoxypropoxy)propyltrimethoxysilane, and the antioxidant is a mass ratio of 1: 0.5 octadecyl β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate and dioctadecyl thiodipropionate;

[0034] Preparing an acidic dispersant solution with a weight percentage of 20 wt% with methanol, and an alkaline dispersant s...

Embodiment 2

[0041] This embodiment provides a method for preparing a PPR pipe with a stainless steel effect, comprising the following steps:

[0042] Prepare the following components by weight: 100 parts of PPR, 15 parts of 800-mesh stainless steel powder, 5 parts of acidic dispersant, 2 parts of alkaline dispersant, 5 parts of maleic anhydride grafted EPDM rubber, 10 parts of polypropylene fiber , 2 parts of coupling agent, 1.3 parts of antioxidant; The acidic dispersant is palmitic acid, the basic dispersant is laurylamine, and the grafting rate of the maleic anhydride grafted EPDM rubber is 2.5%, the tensile strength of the polypropylene fiber is 450Mpa, the coupling agent is γ-mercaptopropyltrimethoxysilane, and the antioxidant is tetrakis[β-(3 , 5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester and pentaerythritol (3-n-decyl thiopropionate);

[0043] It is 20% by weight of acidic dispersant solution and 20% by weight of alkaline dispersant solution prepared by ethan...

Embodiment 3

[0050] This embodiment provides a method for preparing a PPR pipe with a stainless steel effect, comprising the following steps:

[0051] Prepare the following components by weight: 100 parts of PPR, 30 parts of 600-mesh stainless steel powder, 10 parts of acidic dispersant, 5 parts of alkaline dispersant, 10 parts of maleic anhydride grafted EPDM rubber, 12 parts of polypropylene fiber , 3 parts of coupling agent, 3 parts of antioxidant; The acidic dispersant is stearic acid, the basic dispersant is oleylamine, and the grafting rate of the maleic anhydride grafted EPDM rubber is 5%, the tensile strength of the polypropylene fiber is 500Mpa, the coupling agent is three (dioctyl pyrophosphoryloxy) isopropyl titanate, and the antioxidant is that the mass ratio is 1:1 4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)benzene and dioctadecylthiodipropionate;

[0052] Prepare respectively an acidic dispersant solution with a mass percentage of 30% and an alkaline dispersant solution with...

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Abstract

The invention relates to a preparation method of a PPR (Polypropylene Random) tube with a stainless steel effect. The preparation method particularly comprises the following steps of getting ready thefollowing raw materials in parts by weight: 100 parts of PPR, 15 to 30 parts of stainless steel powder, 5 to 10 parts of acidic dispersant, 2 to 6 parts of alkaline dispersant, 5 to 10 parts of maleic anhydride grafted ethylene propylene diene monomer, 8 to 15 parts of polypropylene fiber, 1 to 3 parts of coupling agent and 1.3 to 3 parts of antioxidant; distributing a weakly acidic coupling agent solution on the surface of the polypropylene fiber; distributing an acidic dispersant solution on the surface of the stainless steel powder, and then adding the stainless steel powder into an alkaline dispersant solution; mixing the PPR, the maleic anhydride grafted ethylene propylene diene monomer and the antioxidant and simultaneously spraying modified stainless steel powder mixed liquor to obtain a premixed raw material; adding the premixed raw material and the modified polypropylene fiber into an extruder, extruding and granulating, so as to obtain the PPR tube. The PPR tube prepared bythe preparation method has the uniform stainless steel effect, good low-temperature toughness and no embrittlement phenomenon.

Description

technical field [0001] The invention relates to a method for preparing a PPR pipe material with stainless steel effect, and belongs to the technical field of PPR pipe preparation. Background technique [0002] PPR is also called random copolymerized polypropylene, which is extruded into pipes by random copolymerized polypropylene, and the pipes are injection molded into pipe fittings. Compared with traditional cast iron pipes, galvanized steel pipes, cement pipes and other pipes, PPR pipe fittings are energy-saving, material-saving, Environmental protection and non-toxic, heat and pressure resistance, light weight and high strength, corrosion resistance, no scaling, good impact resistance and creep resistance, easy installation, firm connection, long service life, recyclable materials, etc., are widely used in construction Water supply and drainage, city gas, electric power and optical cable sheathing, industrial fluid transportation, agricultural irrigation and other constr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/14C08L51/04C08L51/00C08L23/12C08K9/04C08K3/08C08K5/134C08K5/372D06M13/513D06M13/503B29B9/06B29C48/92D06M101/20
CPCB29B9/06B29C48/92B29C2948/92704C08L23/14C08L2201/08C08L2203/18C08L2205/03C08L2205/16C08L2207/14D06M13/503D06M13/513D06M2101/20C08L51/04C08L51/003C08L23/12C08K9/04C08K3/08C08K5/1345C08K5/372
Inventor 程东红陈文其
Owner 江西陈氏科技集团股份有限公司