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Graphene reinforced PVC pipe and preparation method thereof

A PVC pipe and graphene technology, applied in the field of polymer materials, can solve the problems of material becoming brittle, reducing material toughness, and failing to enhance the effect, so as to achieve the effect of reducing agglomeration and enhancing effect

Pending Publication Date: 2021-11-12
ZHEJIANG TONGZHENG PIPE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the two-dimensional sheet structure of graphene makes it easy to agglomerate in polymer materials, which not only does not achieve a good strengthening effect, but also causes the material to become brittle and reduce toughness.
In order to improve the dispersion effect of graphene in polymer materials, modifying the surface of graphene can enhance the interaction between graphene and polymers, but there will still be some graphene sheets self-agglomerated into spherical shapes, affecting The strengthening effect of graphene on polymers reduces the toughness of materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Preparation of graphene dispersion

[0022] Take the following raw materials: graphene 0.05Kg, water 0.952Kg, alcohol 0.048Kg and sodium dodecylbenzenesulfonate 0.0025Kg.

[0023] Preparation method: Add graphene and sodium dodecylbenzene sulfonate into a mixed solution of water and alcohol, then place it in an ultrasonic disperser, and perform ultrasonic dispersion while stirring for 10 minutes to obtain a graphene dispersion.

[0024] (2) Material mixing:

[0025] Get the following materials: PVC resin 100Kg, calcium zinc stabilizer 3.5Kg, graphene dispersion 1.0525Kg (graphene 0.05Kg), chlorinated polyethylene 1Kg, lubricant 1.2Kg, calcium carbonate 15Kg and processing aid 1.5Kg.

[0026] Put the above materials (except the graphene dispersion) into a high-speed mixer, mix for 3 minutes at a low speed of 475 rpm, drop in the graphene dispersion during the mixing process, and then carry out high-speed (1200 rpm) mixing, high-speed When mixing, the temperature ri...

Embodiment 2

[0029] (1) Preparation of graphene dispersion

[0030] Take the following raw materials: graphene 0.1Kg, water 2.86Kg, alcohol 0.14Kg and sodium dodecylbenzenesulfonate 0.005Kg.

[0031] Preparation method: Add graphene and sodium dodecylbenzene sulfonate into a mixed solution of water and alcohol, then place it in an ultrasonic disperser, and perform ultrasonic dispersion while stirring for 15 minutes to obtain a graphene dispersion.

[0032] (2) Material mixing:

[0033] Get the following materials: PVC resin 100Kg, calcium zinc stabilizer 3.8Kg, graphene dispersion 3.105Kg (graphene 0.1Kg), chlorinated polyethylene 1.5Kg, lubricant 1.0Kg, calcium carbonate 15Kg and processing aid 0.3Kg.

[0034] Put the above-mentioned materials (except graphene dispersion) into a high-speed mixer, mix at a low speed of 475 rpm for 3 minutes, drop in a graphene dispersion during the mixing process, and then mix at a high speed (1200 rpm). When mixing, the temperature rises to 115°C, and t...

Embodiment 3

[0037] (1) Preparation of graphene dispersion

[0038] Get the following raw materials: graphene 0.4Kg, water 3.81Kg, wine 0.19Kg and sodium dodecylbenzenesulfonate 0.02Kg.

[0039] Preparation method: Add graphene and sodium dodecylbenzene sulfonate into a mixed solution of water and alcohol, then place it in an ultrasonic disperser, and perform ultrasonic dispersion while stirring for 20 minutes to obtain a graphene dispersion.

[0040] (2) Material mixing:

[0041] Get the following materials: PVC resin 100Kg, calcium zinc stabilizer 4.2Kg, graphene dispersion 4.42Kg (graphene 0.4Kg), chlorinated polyethylene 2.0Kg, lubricant 1.2Kg, calcium carbonate 18Kg and processing aid 4.0Kg.

[0042] Put the above-mentioned materials (except graphene dispersion) into a high-speed mixer, mix at a low speed of 475 rpm for 3 minutes, drop in a graphene dispersion during the mixing process, and then mix at a high speed (1200 rpm). When mixing, the temperature rises to 120°C, and then th...

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Abstract

The invention belongs to the field of high polymer materials, and particularly relates to a graphene reinforced PVC pipe and a preparation method thereof. The graphene reinforced PVC pipe is prepared from the following components in parts by weight: 100 parts of PVC resin, 3 to 5 parts of calcium-zinc stabilizer, 0.01 to 0.5 part of graphene, 0.5 to 5 parts of chlorinated polyethylene, 0.5 to 2 parts of lubricant, 5 to 25 parts of calcium carbonate and 0.5 to 4 parts of processing aid. The preparation method of the graphene reinforced PVC pipe comprises the following steps: preparing a graphene dispersion liquid; mixing the materials; and extrusion molding. Graphene is dispersed in a mixed solution of water and alcohol through an ultrasonic dispersion method in advance, then the graphene dispersion liquid, PVC and other materials are mixed through a mechanical high-speed mixing method, water and alcohol are volatilized in the mixing process, uniform dispersion of graphene in PVC is achieved, and the agglomeration effect of graphene is reduced. With application of the method, under the condition of very low graphene content, graphene has an obvious enhancement effect on PVC.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a graphene-reinforced PVC pipe and a preparation method thereof. Background technique [0002] Graphene is a two-dimensional sheet structure with excellent physical properties. The strength of graphene is the highest among the tested materials, reaching 130GPa, which is more than one hundred times that of steel. Adding it to polymer materials can greatly improve the mechanical strength of the material. However, the two-dimensional sheet structure of graphene makes it easy to agglomerate in polymer materials, which not only fails to achieve a good strengthening effect, but also causes the material to become brittle and reduce its toughness. In order to improve the dispersion effect of graphene in polymer materials, modifying the surface of graphene can enhance the interaction between graphene and polymers, but there will still be some graphene sheets self-agglomerated...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L23/28C08K3/04
CPCC08L27/06C08L2203/18C08L23/286C08K3/042
Inventor 崔成华徐辛钱功海
Owner ZHEJIANG TONGZHENG PIPE TECH
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