Preparation method of graphene-modified heat-resistant polyethylene composite tubing

A technology for modifying heat-resistant polyethylene and graphene, which is applied in the field of plastic pipes to achieve strong practicability, improved mechanical strength and anti-aging performance, and obvious effects

Active Publication Date: 2014-08-27
WUHAN KINGBULL ECONOMIC DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Although reports or patents on graphene polymer composite materials have appeared (such as application numbers ZL201110313859.4, ZL2013100342

Method used

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  • Preparation method of graphene-modified heat-resistant polyethylene composite tubing

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Comparison scheme
Effect test

Embodiment 1

[0018] (1) Preparation of modified graphene powder: add 2 parts by weight of silane coupling agent to 100 parts by weight of ethanol / water solution (ethanol: water=95:5, weight ratio), stir evenly and add 10 Graphene powder in parts by weight, after high-speed stirring, then ultrasonically disperse to obtain a modified graphene dispersion; then use a ball mill to obtain a modified graphene powder after the dispersion is fully dried;

[0019] (2) Preparation of modified graphene powder / heat-resistant polyethylene blend masterbatch: the modified graphene powder of 50 parts by weight described in (1) is added to 100 parts by weight of heat-resistant In the polyethylene resin, add 0.5 parts by weight of the mixture of antioxidant 168 and 1010 according to the mass ratio of 2:1, 0.5 parts by weight of polyethylene wax, use the internal mixer to mix and disperse, and then add the blend In a twin-screw extruder, extrude and granulate to obtain a modified graphene powder / heat-resistan...

Embodiment 2

[0022] (1) Preparation of modified graphene powder: add 0.001 parts by weight of titanate coupling agent to 1 part by weight of ethanol / acetic acid solution (ethanol: acetic acid=95:5, weight ratio), and stir evenly Finally, add 1 part by weight of graphene powder, and then ultrasonically disperse after high-speed stirring to obtain a modified graphene dispersion; then use a ball mill to obtain a modified graphene powder after the dispersion is fully dried;

[0023] (2) Preparation of modified graphene powder / heat-resistant polyethylene blend masterbatch: the modified graphene powder of 0.1 parts by weight described in (1) is added to 100 parts by weight of heat-resistant Add 0.1 parts by weight of antioxidant 168 and 0.1 parts by weight of paraffin to the polyethylene resin, use a Z-shaped kneader to mix and disperse, and then add the blend to a single-screw extruder for extrusion and granulation. Obtain the modified graphene powder / heat-resistant polyethylene blending master...

Embodiment 3

[0026] (1) Preparation of modified graphene powder: with 0.8 parts by weight of octadecylamine and isocyanic acid coupling agent, add 1000 parts by weight of ethanol / water solution (ethanol: water=95:5, weight ratio ), after stirring evenly, add 100 parts by weight of graphene powder, after high-speed stirring, ultrasonically disperse to obtain a modified graphene dispersion; then use a ball mill to obtain a modified graphene powder after the dispersion is fully dried ;

[0027] (2) Preparation of modified graphene powder / heat-resistant polyethylene blend masterbatch: the modified graphene powder of 30 parts by weight described in (1) is added to 100 parts by weight of heat-resistant Add 10 parts by weight of antioxidant 1010 and 10 parts by weight of fatty acid to polyethylene resin, mix and disperse it with an open mill, and then add the blend into a planetary screw extruder to extrude and granulate. Modified graphene powder / heat-resistant polyethylene blend masterbatch, th...

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Abstract

The invention provides a preparation method of a graphene-modified heat-resistant polyethylene composite tubing. The preparation method comprises the following steps of 1, modified graphene powder preparation, 2, modified graphene powder/heat-resistant polyethylene blended master batch preparation, and 3, graphene-modified heat-resistant polyethylene composite tubing preparation. The preparation method fully utilizes the existing equipment used in the heat-resistant polyethylene composite tubing industry, can obviously improve tubing conductivity, mechanical strength and aging resistance only by use of a small amount of modified graphene powder, and has a low cost, obvious effects and good practicality.

Description

technical field [0001] The invention relates to the field of plastic pipes, in particular to a method for preparing heat-resistant polyethylene composite pipes modified with graphene. Background technique [0002] Due to its excellent performance, plastic pipes have been widely used in various fields such as engineering water supply and drainage, energy heating systems, gas pipeline systems, etc. However, with the progress of society and the improvement of people's living standards, the requirements for the performance of pipelines, especially the comprehensive performance, are increasing day by day. These performance requirements include mechanical (such as further improving the compression and impact resistance of the pipeline, improving the cold brittleness of the pipeline, etc.), thermal (such as improving the thermal conductivity of the pipeline in the heating pipeline system, etc.), electrical ( Such as improving the antistatic performance of the pipeline, etc.), chem...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08K9/06C08K9/04C08K3/04
CPCC08L23/06C08L2201/04C08L2203/18C08L2205/03C08K9/06C08K3/04C08K5/1345C08K5/526C08L91/06C08K9/04C08K5/09
Inventor 陈厚忠
Owner WUHAN KINGBULL ECONOMIC DEV
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