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Mining graphene, carbon black and polystyrene composite pipe and production method thereof

A technology of graphene and polyethylene, which is applied in the field of high-efficiency mine-use pipe materials and its preparation, can solve the problems of noise pollution, large amount of graphene added, and large amount of added, so as to achieve improved transmission efficiency, long-lasting antistatic performance, The effect of reducing the impact

Inactive Publication Date: 2019-04-05
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

The process is complex and costly, and ultrasonic dispersion is limited in mass production due to its noise pollution
CN102010540B and CN102775669A respectively disclose antistatic compositions for mine flame-retardant polyethylene and expandable flame-retardant polyethylene pipes for underground coal mines. The two patents use graphite as conductive filler and flame retardant respectively, and the prepared antistatic Static electricity and flame retardancy are in line with mining standards, but the disadvantage is that the amount of addition is large and the performance improvement is not obvious; CN104262740A discloses a high-density polyethylene pipe, which uses a screw extruder to prepare graphene powder modified high-density polyethylene. Ethylene pipes, but high-quality graphene powder has a large specific surface area, low density, and a large amount of graphene added. Direct screw extrusion blended graphene powder is not easy to add to the plastic system, resulting in poor dispersion. The surface resistance of the final produced pipe is 1.0×10 6 Ω or more, does not meet the standards for pipes used in coal mines

Method used

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  • Mining graphene, carbon black and polystyrene composite pipe and production method thereof
  • Mining graphene, carbon black and polystyrene composite pipe and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0099] (1) 100 parts of high-density polyethylene, 3.5 parts of antioxidant B225, 8 parts of flame retardant antimony trioxide and 2.5 parts of toughening agent LLDPE were sequentially added to the screw extruder for melt blending and extrusion Flame-retardant polyethylene particles were prepared by pelletizing. The temperatures in the heating zone of the twin-screw granulator are: 240°C, 240°C, 245°C, 245°C, 245°C, 240°C; the screw speed is 65r / min, and the feeding speed is 15r / min.

[0100] (2) The above-mentioned flame-retardant polyethylene particles, 1 part of white oil dispersion, graphene (BET: 487m 2 / g, D50: 27μm, O%<1.0%) is 0.3 parts, 1 part of carbon black, and 3.5 parts of nucleating agent calcium stearate are successively added to the high-speed mixer and mixed, the mixing temperature is 25 ° C, and the rotating speed is 350 r / g min; the mixing time is 10min.

[0101] (3) Add the mixture obtained in (2) into a twin-screw granulator for full melt blending, extru...

Embodiment 2

[0103] (1) 100 parts of high-density polyethylene, 2.5 parts of antioxidant B215, 6.0 parts of red phosphorus and 5 parts of toughening agent SEBS were sequentially added to the screw extruder for melt blending, extruding and dicing to prepare the resistance Combustible polyethylene particles. The temperatures in the heating zone of the twin-screw granulator are: 240°C, 240°C, 245°C, 245°C, 245°C, 240°C; the screw speed is 80r / min, and the feeding speed is 16r / min.

[0104] (2) The above-mentioned flame-retardant polyethylene particles, 1.5 parts of EBS white oil dispersion, graphene (BET: 550m 2 / g, D50: 8μm, O%<1.0%) is 1.6 parts, 4 parts of carbon black, 2 parts of barium sulfate are added in the high-speed mixer successively and mix, and mixing temperature is 35 ℃; Rotating speed is 600r / min; Mixing time is 20min.

[0105] (3) Add the mixture obtained in (2) into a twin-screw granulator for full melt blending, extrusion and granulation. The temperatures in the heating zo...

Embodiment 3

[0107] (1) 100 parts of high-density polyethylene, 1.0 part of antioxidant 264, 1 part of flame retardant aluminum hydroxide and 8 parts of toughening agent EVA are sequentially added to the screw extruder for melt blending and extrusion cutting Granules were used to prepare flame-retardant polyethylene particles. The temperatures in the heating zone of the twin-screw granulator are: 240°C, 240°C, 245°C, 245°C, 245°C, 240°C; the screw speed is 85r / min, and the feeding speed is 28r / min.

[0108] (2) The above-mentioned flame-retardant polyethylene particles, 2.5 parts of A8021 white oil dispersion, graphene (BET: 520m 2 / g, D50: 24μm, O%<1.0%) was 1.8 parts, 5.0 parts of carbon black, and 1 part of barium sulfate were added to the high-speed mixer and mixed successively. The mixing temperature was 40°C; the rotating speed was 650r / min; the mixing time was 30min.

[0109] (3) Add the mixture obtained in (2) into a twin-screw granulator for full melt blending, extrusion and gra...

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Abstract

The invention provides mining graphene, carbon black and polystyrene composite particles, comprising, by weight, 100 parts of high-density polyethylene, 0.1-2 parts of graphene, 1-10 parts of carbon black, 4-15 parts of a flame retardant, 0.5-3 parts of a dispersion, 0.5-4 parts of a nucleating agent, 2-10 parts of a toughener, and 0.5-4 parts of an antioxidant. The invention also provides a preparation method and application of the mining graphene, carbon black and polystyrene composite particles. The graphene / polystyrene prepared herein may reach 25 MPa in tensile strength and 402% in elongation at break; the mechanical properties may fully meet Tensile Property Measurement for Thermoplastic Plastic Pipes GB / T8804-2003 in the coal mine industry standard MT558.1-2005, to be specific, tensile strength of > / =9 Mpa and elongation at break of > / =300%.

Description

technical field [0001] The invention relates to a high-efficiency mine-used pipe material and a preparation method thereof, belonging to the field of polymer material technology and processing. Background technique [0002] Polyethylene (PE) pipes have the advantages of good corrosion resistance, long service life, light weight, and convenient construction, and are widely used in various fields, especially in the coal mining industry. However, PE pipes used in underground coal mines have extremely strict requirements on antistatic and flame retardant properties, and must have good mechanical properties. [0003] At present, there are also reports on relevant literature on antistatic and flame retardant polyethylene pipes for mining. CN 104277279 A discloses a flame-retardant and antistatic polyethylene pipe and its manufacturing method. 20wt% to 40wt% of conductive carbon black is added to the high-density polyethylene matrix, and under the action of auxiliary agents such a...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/08C08L91/06C08K13/02C08K3/22C08K3/04C08K5/098C08K3/02C08K5/13C08K3/30
CPCC08K2003/026C08K2003/2227C08K2003/3045C08L23/06C08L2201/02C08L2201/04C08L2203/18C08L2205/03C08L2207/062C08L23/0815C08L91/06C08K13/02C08K3/2279C08K3/042C08K3/04C08K5/098C08L23/0853C08K5/13C08K3/22C08K3/30C08L53/025C08K3/02
Inventor 田振宇杨万庆谢卫宏白国伟王晓华张寿明张博李文学司书鑫瞿研刘平
Owner 山东方大新材料科技有限公司