High-temperature-resistant ultra-high molecular weight polyethylene pipe and preparation method thereof

An ultra-high molecular weight, polyethylene pipe technology, applied in the field of composite materials, can solve the problems of poor fatigue resistance, difficult processing and low heat deformation temperature, etc., achieve good wear resistance, low equipment dependence, overcome The effect of low hardness

Active Publication Date: 2019-03-01
大庆思旭管业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the defects in the prior art, the present invention provides a high-temperature-resistant ultra-high molecular weight polyethylene pipe, which not only retains the excellent wear resistance of traditional ultra-high molecular weight polyethylene pipes, but also has extremely high Excellent impact strength, excellent self-lubricating performance, excellent chemical resistance and low temperature resistance, excellent anti-adhesion, hygienic, non-toxic and pollution-free, recyclable, and improved weather resistance It overcomes the defects of traditional ultra-high molecular weight polyethylene pipes, such as low surface hardness, low thermal deformation temperature, poor abrasive wear resistance and fatigue wear resistance, difficult processing and molding, poor stress resistance, and easy cracking; In addition, the present invention also provides a preparation method of the high-temperature resistant ultra-high molecular weight polyethylene pipe

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A method for preparing a high-temperature resistant ultra-high molecular weight polyethylene pipe, comprising the steps of:

[0028] S1: Dissolve 1kg of 2,2-bis(4-aminophenyl)hexafluoropropane and 1.47kg of 4,6-bis(1-adamantane)-1,3-diepoxypropyleneoxybenzene in dimethyl ethylene In 10 kg of sulfone, 0.6 kg of sodium carbonate was added thereto, stirred and reacted for 10 hours in a nitrogen atmosphere at 75° C., and then precipitated in water, washed with water for 3 times, and washed with ethanol for 3 times, and then Place in a vacuum drying oven at 80°C and dry to constant weight to obtain a fluorine-containing adamantyl polycondensate;

[0029] S2: 0.1kg of 1,2,2-trifluorovinyltriphenylsilane, 0.1kg of octavinyl-POSS, 0.003kg of sodium persulfate, 0.2kg of fluorine-containing adamantyl polycondensate prepared by step S1, 1 kg of ultra-high molecular weight polyethylene and 0.2 kg of glycidyl methacrylate grafted ultra-high molecular weight polyethylene fiber were ...

Embodiment 2

[0033] A method for preparing a high-temperature resistant ultra-high molecular weight polyethylene pipe, comprising the steps of:

[0034] S1: Dissolve 1kg of 2,2-bis(4-aminophenyl)hexafluoropropane and 1.47kg of 4,6-bis(1-adamantane)-1,3-diepoxypropyleneoxybenzene in N,N - 11 kg of dimethylformamide, and 0.65 kg of potassium carbonate was added thereto, stirred and reacted for 10.5 hours in a helium atmosphere at 77°C, and then precipitated in water, washed with water for 4 times, and then washed with ethanol polymer for 4 times, and then placed in a vacuum drying oven at 83°C to dry to constant weight to obtain a fluorine-containing adamantyl polycondensate;

[0035]S2: 0.1kg of 1,2,2-trifluorovinyltriphenylsilane, 0.1kg of octavinyl-POSS, 0.0035kg of potassium persulfate, 0.2kg of fluorine-containing adamantyl polycondensate prepared through step S1, 1 kg of ultra-high molecular weight polyethylene and 0.2 kg of glycidyl methacrylate grafted ultra-high molecular weight po...

Embodiment 3

[0039] A method for preparing a high-temperature resistant ultra-high molecular weight polyethylene pipe, comprising the steps of:

[0040] S1: Dissolve 1kg of 2,2-bis(4-aminophenyl)hexafluoropropane and 1.47kg of 4,6-bis(1-adamantane)-1,3-diepoxypropyleneoxybenzene in N-methyl In 13 kg of pyrrolidone, 0.7 kg of sodium hydroxide was added thereto, stirred and reacted for 11 hours in a neon atmosphere at 80° C., and then precipitated in water, washed with water for 4 times, and then washed with ethanol for 5 and then placed in a vacuum drying oven at 85°C and dried to constant weight to obtain a fluorine-containing adamantyl polycondensate;

[0041] S2: 0.1kg of 1,2,2-trifluorovinyltriphenylsilane, 0.1kg of octavinyl-POSS, 0.004kg of ammonium persulfate, 0.2kg of fluorine-containing adamantyl polycondensate prepared through step S1, 1 kg of ultra-high molecular weight polyethylene and 0.2 kg of glycidyl methacrylate grafted ultra-high molecular weight polyethylene fiber were a...

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PUM

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Abstract

The invention discloses a preparation method of a high-temperature-resistant ultra-high molecular weight polyethylene pipe. The preparation method comprises the following steps: (1) preparing fluorine-containing adamantyl polycondensate; (2) preparing a mixture; and (3) performing extrusion molding. The invention also discloses the high-temperature-resistant ultra-high molecular weight polyethylene pipe prepared according to the preparation method of the high-temperature-resistant ultra-high molecular weight polyethylene pipe. The high-temperature-resistant ultra-high molecular weight polyethylene pipe disclosed by the invention not only keeps the advantages of excellent wear resistance, extremely high impact strength, excellent self-lubricating property, good chemical resistance and low temperature resistance, excellent adhesion resistance, sanitation, no toxicity, no pollution and recyclability of a traditional ultra-high molecular weight polyethylene pipe, but also improves the properties, such as weather resistance and heat resistance, of the traditional ultra-high molecular weight polyethylene pipe.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a high-temperature resistant ultra-high molecular weight polyethylene pipe and a preparation method thereof. Background technique [0002] With the development of society, plastic pipes are used more and more widely. As one of many plastic pipes, ultra-high molecular weight polyethylene pipes have excellent mechanical properties, wear resistance, self-lubrication, and chemical resistance. , corrosion resistance and low temperature resistance, are widely used in powder, slurry, liquid and gas transportation in coal, petrochemical, thermal power generation, public utilities and other industries. However, this kind of pipe has low surface hardness, low thermal deformation temperature, poor abrasive wear and fatigue wear resistance, difficult processing and molding, poor stress resistance, and easy cracking, which limit the application range of UHMWPE pipes. [0003] The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L51/06C08L79/02
CPCC08L51/06C08L2201/08C08L2203/18C08L2205/025C08L2205/03C08L79/02
Inventor 王超
Owner 大庆思旭管业有限公司
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