Graphene-reinforced mining polyethylene composition, graphene-reinforced mining polyethylene particle, graphene-reinforced mining polyethylene pipe material, and preparation methods thereof

A graphene and polyethylene technology, applied in the field of polymer material technology and processing, can solve problems such as poor dispersibility, large addition amount, and melting

Inactive Publication Date: 2019-04-12
山东方大新材料科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In order to solve the problem of excessive addition of conductive fillers in existing reinforced polyethylene materials for mine use, overcome the defects of large additions of graphene, poor dispersion and high cost, and overcome the difficulty in processing and easy production of ultra-high molecular weight polyethylene In order to solve the problem of melting defects, the present invention provides a graphene-reinforced polyethylene composition for mine use, and at the same time provides graphene-reinforced polyethylene particles for mine use, graphene-reinforced polyethylene pipes for mine use and their preparation methods and uses, and obtain a A graphene-reinforced mining polyethylene composition, particles and pipes with excellent antistatic, flame retardant and mechanical properties, the specific adopted scheme is as follows

Method used

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  • Graphene-reinforced mining polyethylene composition, graphene-reinforced mining polyethylene particle, graphene-reinforced mining polyethylene pipe material, and preparation methods thereof

Examples

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preparation example Construction

[0140] According to a preferred embodiment of the present invention, the preparation method of the dispersion includes: using white oil or synthetic oil as the dispersed phase, using PE wax, EBS (ethylene bis stearic acid amide), hyperdispersant A8021 or hyperdispersant One or the combination of two or more of the agent R1618 is used as the dispersion medium, and the dispersion liquid is prepared.

[0141] According to a preferred embodiment of the present invention, the nucleating agent is selected from one or a combination of two or more of calcium stearate, barium sulfate, silicate or titanium dioxide.

[0142] According to a preferred embodiment of the present invention, the toughening agent is selected from one or a combination of two or more of LLDPE, SEBS, SBS, POE, DOP or EVA.

[0143] According to a preferred embodiment of the present invention, the antioxidant is selected from one or a combination of two or more of antioxidant B215, antioxidant 1010, antioxidant 264,...

Embodiment 1

[0166] The present embodiment illustrates the preparation method of the graphene-enhanced mine polyethylene pipe of the present invention, comprising:

[0167] S1: Add 100 parts of high-density polyethylene, 3.0 parts of antioxidant B215, 18 parts of flame retardant red phosphorus, 8 parts of polypyrrole polymer, and 0.8 parts of PE wax white oil dispersion into the high-speed mixer in sequence , the mixing temperature is 25°C, the rotating speed is 700r / min; the mixing time is 35min; the obtained mixture and 1.5 parts of toughening agent EVA are added to the internal mixer for full melting and blending, and the rotating speed of the internal mixer is 40r / min, The temperature was controlled at 185°C, and the total mixing time was 12 minutes. The modified polyethylene particles were prepared by extruding and granulating through a double-wrist granulator. The extrusion speed of the granulator was 30r / min, and the extrusion temperature was controlled at 200°C.

[0168] S2: The m...

Embodiment 2

[0170] The present embodiment illustrates the preparation method of the graphene-enhanced mine polyethylene pipe of the present invention, comprising:

[0171] S1: Add 100 parts of high-density polyethylene, 2.5 parts of antioxidant B215, 15 parts of flame retardant red phosphorus, 18 parts of polyaniline polymer, and 1 part of A8021 white oil dispersion into the high-speed mixer in sequence, The mixing temperature is 30°C, the rotating speed is 650r / min; the mixing time is 25min; the obtained mixture and 3.5 parts of toughening agent SEBS are added to the internal mixer for full melt blending, the rotating speed of the internal mixer is 40r / min, the temperature The temperature is controlled at 230°C, and the total mixing time is 18 minutes. The modified polyethylene particles were prepared by extruding and granulating through a double-wrist granulator. The extrusion speed of the granulator was 28r / min, and the extrusion temperature was controlled at 240°C.

[0172] S2: The m...

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Abstract

The invention relates to a graphene-reinforced mining polyethylene composition, a graphene-reinforced mining polyethylene particle, a graphene-reinforced mining polyethylene pipe material, and preparation methods thereof. The composition comprises high-density polyethylene, graphene, a conductive filling material, a flame retardant, a dispersion, a nucleating agent, a toughening agent, an antioxidant and a coupling agent namely an ethanol solution. The composition solves the problem of excessively-large addition amount of a conductive filling material for a conventional mining polyethylene material, overcomes the defects of large addition amount and poor dispersity for conventional graphene, and overcomes the problems of difficult processing and easy generation of melt defects for adoptionof ultrahigh-molecular-weight polyethylene in the prior art. The graphene-reinforced mining polyethylene particle and the graphene-reinforced mining polyethylene pipe material obtained from the composition provided by the invention have excellent antistatic, flame-retardant and mechanical properties and can reach tensile strength of 23 MPa and elongation at break of 380%; and the graphene-reinforced mining polyethylene pipe material has smooth surface, light weight and low wall thickness, is easy to process and meets the standards of mining pipe materials.

Description

technical field [0001] The invention belongs to the field of polymer material technology and processing. In particular, it relates to a graphene-reinforced polyethylene composition for mining, particles, pipes and a preparation method thereof. Background technique [0002] As one of the five general-purpose thermoplastics, polyethylene (PE) has outstanding characteristics such as abundant raw materials, low price, wide range of uses, and convenient processing. It is widely used in industry, agriculture, construction, transportation, and packaging industries. In recent years, PE has developed rapidly in the field of mining pipes, but PE pipes used in underground coal mines have extremely strict requirements on antistatic and flame retardant properties, and must have excellent mechanical properties. [0003] The traditional method achieves antistatic and flame retardant effects by adding a certain amount of conductive fillers and flame retardants, such as conductive fillers (...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/08C08L53/02C08K13/02C08K3/04
CPCC08K2201/001C08K2201/003C08K2201/006C08L23/06C08L2201/02C08L2201/04C08L2203/18C08L2205/03C08L2207/062C08L23/0853C08K13/02C08K3/042C08L53/025
Inventor 白囯伟谢卫宏张博田振宇杨万庆张寿明王晓华吴昊李文学冯金义包政礼瞿研
Owner 山东方大新材料科技有限公司
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