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Whisker-reinforced polyethylene pipe used in coal mine and preparation method thereof

A polyethylene pipe, enhanced technology, applied in the direction of pipes, rigid pipes, mechanical equipment, etc., can solve the problems of complex manufacturing process and high cost, achieve the effect of large specific surface area, oxygen isolation, and enhanced flame retardant effect

Inactive Publication Date: 2013-01-02
TIANJIN JUNXING PIPE GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the rapid development of the synthesis industry, whiskers currently produced include: metals, carbides, halides, nitrides, etc., but due to their high cost and relatively complicated manufacturing process, it is difficult to promote them in ordinary industries. However, Magnesium salt whisker is a reinforcing material with low production cost, simple preparation process and excellent performance. It not only has similar strength and performance to carbon fiber, but also has easy-to-obtain raw materials and is environmentally friendly. It is a suitable industrialization Reinforcements produced

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] ①The weight composition is: magnesium salt whisker 20%, superconducting carbon black 8%, decabromodiphenyl ether 12%, antimony trioxide 6%, POE 4%, processing aid 1%, high-density polyethylene 49% .

[0024] The magnesium salt whisker needs to undergo the following surface treatment: the magnesium salt whisker is stirred in a high-speed mixer for 5 minutes at room temperature, with a rotation speed of 100 r / min and a surface treatment agent dosage of 3%.

[0025] ② After uniformly mixing the mixture in a high-speed mixer, put it into a twin-screw extrusion granulator, and control the extrusion granulation temperature between 170 and 210°C.

[0026] ③Put the pellets into the extrusion molding machine, set the temperature of the barrel area to 180-190°C, the temperature of the mold area to 180-195°C, and the vacuum degree to -0.03--0.05MPa. After cooling and shaping, cut it into a specified length, that is, finished product.

[0027] The flame retardant, antistatic and ...

Embodiment 2

[0029]①The weight composition is: magnesium salt whisker 10%, superconducting carbon black 10%, decabromodiphenyl ether 15%, antimony trioxide 8%, POE 5%, processing aid 1%, high-density polyethylene 51% .

[0030] The magnesium salt whisker needs to undergo the following surface treatment: the magnesium salt whisker is stirred in a high-speed mixer for 5 minutes at room temperature, with a rotation speed of 100 r / min and a surface treatment agent dosage of 3%.

[0031] ② After uniformly mixing the mixture in a high-speed mixer, put it into a twin-screw extrusion granulator, and control the extrusion granulation temperature between 170 and 210°C.

[0032] ③Put the pellets into the extrusion molding machine, set the temperature of the barrel area to 180-190°C, the temperature of the mold area to 180-195°C, and the vacuum degree to -0.03--0.05MPa. After cooling and shaping, cut it into a specified length, that is, finished product.

[0033] The flame retardant, antistatic and ...

Embodiment 3

[0035] ①The weight composition is: magnesium salt whisker 30%, superconducting carbon black 6%, decabromodiphenyl ether 8%, antimony trioxide 4%, POE 3%, processing aid 1%, high-density polyethylene 48% .

[0036] The magnesium salt whisker needs to undergo the following surface treatment: the magnesium salt whisker is stirred in a high-speed mixer for 5 minutes at room temperature, with a rotation speed of 100 r / min and a surface treatment agent dosage of 3%.

[0037] ② After uniformly mixing the mixture in a high-speed mixer, put it into a twin-screw extrusion granulator, and control the extrusion granulation temperature between 170 and 210°C.

[0038] ③Put the pellets into the extrusion molding machine, set the temperature of the barrel area to 180-190°C, the temperature of the mold area to 180-195°C, and the vacuum degree to -0.03--0.05MPa. After cooling and shaping, cut it into a specified length, that is, finished product.

[0039] The flame retardant, antistatic and m...

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Abstract

The invention discloses a whisker-reinforced polyethylene pipe used in a coal mine and a preparation method thereof. The whisker-reinforced polyethylene pipe used in a coal mine belongs to a modified polyethylene. The whisker-reinforced polyethylene pipe used in a coal mine is prepared from 10 to 30wt% of magnesium salt whiskers, 5 to 10wt% of superconducting carbon black, 5 to 15wt% of decabromodiphenyl ether, 2 to 8wt% of antimonous oxide, 2 to 5wt% of POE, 1 to 2wt% of processing assistants and the balance of high density polyethylene. The magnesium salt whiskers have diameters less than 1.0 micrometer, an average length of 10 to 60 micrometers and a length-diameter ratio of 30 to 80 micrometers. The preparation method guarantees excellent flame resistance and static resistance of the whisker-reinforced polyethylene pipe, obviously improves mechanical properties of the whisker-reinforced polyethylene pipe, solves the problem that a plastic pipe used in a coal mine contains a large amount of assistants so that mechanical properties of the plastic pipe are reduced, prolongs a service life of the whisker-reinforced polyethylene pipe, reduces environmental pollution and the damage on a human body in a flame retardance aspect, and guarantees usability and safety of the whisker-reinforced polyethylene pipe used in a coal mine.

Description

technical field [0001] The invention relates to a composition and preparation method of a whisker-reinforced polyethylene pipe for underground coal mines, which belongs to the technical field of modified polyethylene. The method can also be used for plastic pipe fittings, drainage pipes, plastic electrical products and flammable Production of explosive gas pipelines. Background technique [0002] Coal is one of the main energy sources in my country, with an annual output of more than 3 billion tons, accounting for 70% of the total energy. The pipes for underground ventilation, drainage and dust removal in traditional coal mine production are mainly steel pipes, cast iron pipes or glass steel pipes. Gas explosions, or major production accidents that seriously endanger personal safety such as water penetration due to partial corrosion and rupture of pipes, and the transportation and installation of such pipes are also extremely inconvenient. Due to the characteristics of goo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/08C08K13/06C08K9/04C08K7/08C08K5/06C08K3/04C08K3/22B29C47/92F16L9/12B29C48/92
CPCB29B9/06B29B9/12B29B9/14B29C48/04B29C48/40B29C48/92C08K3/04C08L23/06C08L71/02C08L2207/062C09K21/08F16L9/12
Inventor 夏成文韩英民吴晓芬李晨于东明
Owner TIANJIN JUNXING PIPE GRP CO LTD
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