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Plastic metal composite pipe and preparation method thereof

A technology of plastic metal and composite pipes, applied in the direction of pipes, rigid pipes, mechanical equipment, etc., can solve the problems of poor mechanical properties and low temperature tolerance, and achieve improved toughness and mechanical properties, improved heat resistance, and increased low temperature resistance performance effect

Inactive Publication Date: 2019-02-22
俞小峰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a plastic-metal composite pipe and its preparation method in view of the problems of poor low temperature tolerance and poor mechanical properties of the current aluminum-plastic composite pipe

Method used

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  • Plastic metal composite pipe and preparation method thereof

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preparation example Construction

[0024] The preparation method of toughening additive is:

[0025] A. Take fumed silica and mix it with kaolin at a mass ratio of 2~6:1~4:2~5, and dry it at 100~110°C for 1~3h to obtain a dried product. Take the dried product at a mass ratio of 1~4:10 ~15 Add absolute ethanol, then add γ-(methacryloyloxy)propyltrimethoxysilane with 2~5% of dry matter, stir and mix at 60~65°C for 1~3h, filter with suction, and take the filter residue Grind and crush through a 200-400 mesh sieve, and collect the sieved particles;

[0026] B. Take sodium lauryl sulfate and add deionized water according to the mass ratio of 1~4:10~20, heat up to 50~60°C and stir and mix for 20~30min to obtain a mixed solution, adjust the pH to 8~9, and press the mass ratio Count, take 30~60 parts of sieved particles, 15~20 parts of mixed solution, 6~9 parts of methyl methacrylate, 4~7 parts of butyl acrylate, mix them, and ultrasonicate for 20~30min to obtain ultrasonic liquid, heat up to 40 ~50°C, add potassium ...

Embodiment 1

[0036] The preparation method of toughening additive is:

[0037] A. Take fumed silica and add kaolin at a mass ratio of 2:1:2 to mix, and dry at 100°C for 1 hour to obtain a dry product. Take the dry product and add absolute ethanol at a mass ratio of 1:10, and then add 2% of the dry product. γ-(Methacryloyloxy)propyltrimethoxysilane, stirred and mixed at 60°C for 1 hour, suction filtered, and the suction filter residue was ground and pulverized through a 200-mesh sieve, and the sieved particles were collected;

[0038] B. Take sodium lauryl sulfate and add deionized water at a mass ratio of 1:10, heat up to 50°C and stir and mix for 20 minutes to obtain a mixed solution, adjust the pH to 8, and take 30 parts of sieved particles, Mix 15 parts of the mixed solution, 6 parts of methyl methacrylate, and 4 parts of butyl acrylate, and ultrasonicate for 20 minutes to obtain an ultrasonic solution, raise the temperature to 40°C, add potassium persulfate with a mass of 1% of the ult...

Embodiment 2

[0048] The preparation method of toughening additive is:

[0049] A. Take fumed silica and add kaolin at a mass ratio of 6:4:5 to mix, dry at 110°C for 3 hours to obtain a dry product, take the dry product and add absolute ethanol at a mass ratio of 4:15, and then add 5% of the dry product γ-(methacryloyloxy)propyltrimethoxysilane, stirred and mixed at 65°C for 3 hours, filtered with suction, took the suction filter residue, ground and pulverized it through a 400 mesh sieve, and collected the sieved particles;

[0050] B. Take sodium lauryl sulfate and add deionized water at a mass ratio of 4:20, heat up to 60°C and stir and mix for 30 minutes to obtain a mixed solution, adjust the pH to 9, and take 60 parts of sieved particles, Mix 20 parts of the mixed solution, 9 parts of methyl methacrylate, and 7 parts of butyl acrylate, and ultrasonicate for 30 minutes to obtain an ultrasonic solution, raise the temperature to 50°C, add potassium persulfate with a mass of 3% of the ultra...

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Abstract

The invention discloses a plastic metal composite pipe and a preparation method thereof, and belongs to the field of pipeline processing. According to the preparation method, alpha, omega-dihydroxyl polyphenylmethyl siloxane is added into a dealcoholizing crosslinker methoxyl triethoxysilane and a catalyst dibutyltin dilaurate to form an additive of a silicon rubber type plastic pipe base material, so that the low temperature resistance can be improved, and the low temperature resistance of a plastic-metal composite pipe can be increased; fumed silica and kaolin are added and modified throughgamma-(methacryloxy), and crazing is prevented from further developing and forming cracking, the impact resistance of the material and toughness and mechanical property of plastics can be improved; nylon-66 salt and decyldiamine sebacate are added to serve as a nylon mixture, the blend low-temperature initial property is effectively improved, and the low-temperature impact is strong, so that plastics cannot be embrittled under a low-temperature condition and have relatively good toughness, and the low-temperature resistance of a composite pipe can be reinforced. The plastic metal composite pipe can solve the problems of poor low temperature endurance and poor mechanical performance of an existing aluminum plastic composite pipe.

Description

technical field [0001] The invention relates to the technical field of pipe processing, in particular to a plastic-metal composite pipe and a preparation method thereof. Background technique [0002] Aluminum-plastic composite pipe is the earliest water supply pipe to replace cast iron pipe. Its basic structure is plastic, hot melt adhesive, aluminum alloy, hot melt adhesive and plastic from the inside to the outside. The traditional aluminum-plastic composite pipe is a five-layer structure composite pipe formed by forming polyethylene, polyethylene-specific hot melt adhesive, and aluminum alloy foil through high-temperature and high-pressure foundations. The outermost and inner layers are high-density polyethylene ( The specific gravity is greater than 0.95g / cm 3 ), the second layer is hot melt adhesive, the third layer is aluminum tube, and the fourth layer is also a layer of hot melt adhesive; because the tube contains a metal aluminum layer, it can not only increase the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L83/04C08L53/02C08L23/08C08L51/10C09J175/04C09J177/06C09J11/08F16L9/147
CPCC08F292/00C08L23/06C08L2201/08C08L2203/18C08L2205/035C09J11/08C09J175/04C09J177/06F16L9/147C08L83/04C08L53/025C08L23/0815C08L51/10C08L77/06C08L51/06C08L75/04
Inventor 俞小峰路芸卢星
Owner 俞小峰
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