Preparation method and application of high-strength plastic pipe material

A high-strength plastic and pipe technology, applied in the field of plastic pipes, can solve the problems of poor impact resistance, low softening temperature, heat deformation, etc., and achieve the effect of improved performance, high tensile strength, and less heat deformation

Inactive Publication Date: 2018-04-13
吴江市强塑阀门管件厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although plastic pipes have achieved rapid development due to their advantages, there are still some problems in the following aspects: such as poor tensile strength and toughness, poor impact resistance, low softening temperature, and easy heat deformation, etc., to a certain extent Restricts the application of plastic pipes in some fields that have higher requirements for materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Put 35 parts of polyoxymethylene resin, 28 parts of n-butyl acrylate, and 16 parts of diisooctyl terephthalate into the autoclave, then add 3 parts of phthalic anhydride to adjust the pressure of the autoclave to 6MPa, temperature to 130°C, react for 2 hours to obtain a preliminary reaction product;

[0023] (2) 40 parts of polypropylene, 25 parts of polyvinyl chloride, and 50 parts of epoxidized soybean oil are stirred in a mixer, and the stirring rate is 200 rpm, and then transferred to a mixer for melting and mixing, and the mixing temperature is 200°C, the mixing time is 40 minutes to obtain the mixed product;

[0024] (3) Put 8 parts of the mixing product and erucamide obtained in step (2) into a cold mixer, stir at a speed of 100 rpm, and simultaneously feed cooling water to cool, and wait for the cold mixer to The material in the mixture is cooled to 50°C to obtain a cold mixed material;

[0025] (4) Add the preliminary reaction product of step (1) gained a...

Embodiment 2

[0030] (1) Put 40 parts of polyoxymethylene resin, 30 parts of n-butyl acrylate, and 18 parts of diisooctyl terephthalate into the autoclave, then add 4 parts of phthalic anhydride to adjust the pressure of the autoclave to 7MPa, temperature to 140°C, react for 2.5 hours to obtain a preliminary reaction product;

[0031] (2) 45 parts of polypropylene, 30 parts of polyvinyl chloride, and 55 parts of epoxidized soybean oil are stirred in a mixer, and the stirring speed is 200 rpm, and then transferred to a mixer for melting and mixing, and the mixing temperature is 210°C, the mixing time is 50 minutes to obtain the mixing product;

[0032] (3) Put 9 parts of the mixing product and erucamide obtained in step (2) into a cold mixer, stir at a speed of 120 rpm, and simultaneously feed cooling water to cool, and wait for the cold mixer to The material in the mixture is cooled to 55°C to obtain a cold mixed material;

[0033] (4) Add the preliminary reaction product of step (1) gain...

Embodiment 3

[0038] (1) Put 45 parts of polyoxymethylene resin, 32 parts of n-butyl acrylate, and 20 parts of diisooctyl terephthalate into the autoclave, then add 5 parts of phthalic anhydride to adjust the pressure of the autoclave to 8MPa, temperature to 150°C, react for 3 hours to obtain a preliminary reaction product;

[0039] (2) Stir 50 parts of polypropylene, 35 parts of polyvinyl chloride, and 60 parts of epoxidized soybean oil in a mixer at a stirring rate of 200 rpm, then transfer to a mixer for melting and mixing, and the mixing temperature is 220°C, and the mixing time is 60 minutes to obtain a mixed product;

[0040] (3) Put 10 parts of the mixing product and erucamide obtained in step (2) into a cold mixer, stir at a rate of 140 rpm, and simultaneously feed cooling water to cool, and wait for the cold mixer to The material in the mixture is cooled to 60°C to obtain a cold mixed material;

[0041] (4) Add the preliminary reaction product of step (1) gained and the cold mixe...

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PUM

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Abstract

The invention discloses a preparation method and application of a high-strength plastic pipe material. The method comprises the following steps: adding acetal resin, n-butyl acrylate and dioctyl terephthalate into a high pressure reactor; adding phthalic anhydride for high-temperature reaction; then, carrying out mixing on polypropylene, polyvinyl chloride and epoxidized soybean oil, and carryingout cold mixing with erucyl amide; adding mixture and erucyl amide into an internal mixer to be mixed with phosphoric acid tritolyl ester and pentaerythritol; finally, carrying out modeling through aconfluence core and a die head to obtain a finished product. The prepared plastic pipe material has the advantages of high tensile strength, high impact resistance, small possibility of thermal deformation and a good application prospect in building drainage pipeline engineering.

Description

technical field [0001] The invention relates to the technical field of plastic pipes, in particular to a preparation method and application of high-strength plastic pipes. Background technique [0002] Plastic pipes are high-tech composite chemical building materials, and chemical building materials are the fourth largest category of new building materials emerging in the contemporary era after steel, wood, and cement. Chemical building materials have made great progress and developed rapidly in our country, especially the widespread use of new environmentally friendly plastic pipes, which has set off a revolution to replace traditional building materials. Plastic pipes are widely used in the fields of building water supply and drainage, urban water supply and drainage, and gas pipes because of their advantages such as small water loss, energy saving, material saving, ecological protection, and convenient completion. They have become the main force of urban construction pipe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L91/06C08L23/12C08L27/06C08L59/00C08L33/08C08K5/12C08K5/1539C08K5/20C08K5/523C08K5/053C08K5/00B29B7/28B29L23/00
Inventor 钱全
Owner 吴江市强塑阀门管件厂
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