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Ultrahigh molecular weight polyethylene pipe with long-acting anti-static property and flame retardant property and preparation method thereof

A technology of ultra-high molecular weight polyethylene pipes, which is applied in the field of material processing, can solve the problems of poor antistatic ability and difficult processing of ultra-high molecular weight polyethylene pipes, and achieve increased lubricity, long-term flame retardancy and antistatic properties, Effect of improving processing fluidity

Active Publication Date: 2015-05-06
FOSHAN RISUN HANKE PLASTIC TECH
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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 overcome the processing difficulties and poor antistatic ability of existing ultra-high molecular weight polyethylene pipes, and provide an ultra-high molecular weight polyethylene pipe with good processing performance, long-term antistatic and flame-retardant properties. Preparation and processing method of polyethylene pipe

Method used

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  • Ultrahigh molecular weight polyethylene pipe with long-acting anti-static property and flame retardant property and preparation method thereof
  • Ultrahigh molecular weight polyethylene pipe with long-acting anti-static property and flame retardant property and preparation method thereof
  • Ultrahigh molecular weight polyethylene pipe with long-acting anti-static property and flame retardant property and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0035] 1. Preparation of methyl vinyl siloxane grafted low density polyethylene

[0036] According to the ratio of 1kg of low-density polyethylene: 1g of dicumyl peroxide: 50g of methyl vinyl siloxane, the low-density polyethylene was mixed on a double-roller mixer at a temperature of 120°C, and then added in turn. Dicumyl oxide and methyl vinyl siloxane were mixed and removed, and then hot-pressed on a flat vulcanizing machine at 190°C and 10 MPa pressure for 15 minutes to react, formed into pieces, taken out, and cooled to room temperature.

[0037] 2. Preparation of polyelectrolyte grafted low density polyethylene

[0038] Mix according to the ratio of 500ml xylene: 80g low-density polyethylene: 1g azobisisobutyronitrile: 10g methacrylic acid, reflux reaction at 130 degrees Celsius for 3~5h; evaporate to remove the solvent, and dry the product for 1~3h; use sodium carbonate aqueous solution After neutralization treatment, the product is dried and ground to 100-200 mesh to ...

Embodiment 2

[0047] 1. Preparation of methyl vinyl siloxane grafted low density polyethylene

[0048] According to the ratio of 1kg of low-density polyethylene: 1g of dicumyl peroxide: 150g of methyl vinyl siloxane, the low-density polyethylene was mixed on a double-roller mixer at a temperature of 120°C, and then added in sequence. Dicumyl oxide and methyl vinyl siloxane were mixed and removed, and then hot-pressed on a flat vulcanizing machine at 190°C and 10 MPa pressure for 15 minutes to react, formed into pieces, taken out, and cooled to room temperature.

[0049] 2. Preparation of polyelectrolyte grafted low density polyethylene

[0050] Mix according to the ratio of 500ml xylene: 80g low-density polyethylene: 1g azobisisobutyronitrile: 20g carboxybetaine methacrylate, reflux reaction at 130 degrees Celsius for 3-5 hours; evaporate to remove the solvent, and dry the product for 1-3 hours; The final product is ground to 100-200 mesh to obtain polyelectrolyte grafted low-density polye...

Embodiment 3

[0059] 1. Preparation of methyl vinyl siloxane grafted low density polyethylene

[0060] According to the ratio of 1kg low-density polyethylene: 1.5g dicumyl peroxide: 120g methyl vinyl siloxane, mix the low-density polyethylene on a double-roller mixer at a temperature of 120°C, and then add Mix dicumyl peroxide and methyl vinyl siloxane, take it out, and then heat press it on a flat vulcanizing machine at 190°C and 10 MPa pressure for 15 minutes to react, form a piece, take it out, and cool to room temperature.

[0061] 2. Preparation of polyelectrolyte grafted low density polyethylene

[0062] Mix according to the ratio of 500ml xylene: 80g low-density polyethylene: 1g azobisisobutyronitrile: 20g acrylic acid, reflux reaction at 130 degrees Celsius for 3~5h; evaporate to remove the solvent, and dry the product for 1~3h; use tetramethyl hydroxide After the ammonium aqueous solution is neutralized, the dried product is ground to 100-200 mesh to prepare polyelectrolyte grafte...

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Abstract

The invention provides a method for improving anti-static property and flame retardant property of an ultrahigh molecular weight polyethylene pipe and the ultrahigh molecular weight polyethylene pipe with long-acting anti-static property and flame retardant property obtained through the method. According to the method, methyl vinyl siloxane grafted low-density polyethylene is used as a flame retardant and polyelectrolyte grafted low-density polyethylene is used as an anti-static agent in the machining process of the ultrahigh molecular weight polyethylene pipe, and molybdenum disulfide, a lubricant, superfine carbon black and a coupling agent are combined to enhance the processing fluidity, anti-static property, flame retardant property and compatibility with inorganic additives of the ultrahigh molecular weight polyethylene. The pipe wall thickness of the prepared anti-static flame retardant pipe can be up to 40 mm, the oxygen index is higher than 27, the surface resistance of the pipe is 105-1010 ohm, the anti-static property and the flame retardant property hardly decline after the processes of long-time friction, water washing and organic solvent washing, and the application prospect is good.

Description

technical field [0001] The invention belongs to the technical field of material processing. More specifically, it relates to an ultra-high molecular weight polyethylene pipe with long-term antistatic and flame-retardant properties and a preparation method thereof. Background technique [0002] Ultra-high molecular weight polyethylene usually refers to linear polyethylene with a relative molecular weight of more than 1.5 million. Its full name in English is UlartHighMoleeularWeihgtpolyethylene, referred to as UHMWPE. Between 50,000 and 300,000, even high-molecular-weight high-density polyethylene has a weight-average molecular weight of only 200,000-500,000, while UHMWPE has a molecular weight of 1.5-6 million. Germany even has products with a molecular weight of more than 10 million. Ultra-high molecular weight polyethylene (UHMWPE) is a new type of engineering plastic with excellent performance, because the prepared pipe has excellent performance, including excellent fric...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L51/06C08K13/06C08K9/06C08K9/04C08K3/30C08K3/04C08F255/02B29C47/92B29C48/92
CPCB29C48/92B29C2948/9258B29C2948/92704C08F255/02C08L23/06C08L2201/02C08L2201/04C08L2203/18C08L2205/03C08L51/06C08L91/06C08K13/06C08K9/04C08K9/06C08K2003/3009C08K3/04C08K5/20C08K5/101C08F230/08C08F220/06C08F220/36
Inventor 高翩陈旭东
Owner FOSHAN RISUN HANKE PLASTIC TECH
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