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Preparation method of antistatic PVC composite material

A composite material, antistatic technology, applied in chemical instruments and methods, carbon compounds, calcium/strontium/barium compounds, etc., can solve the problems of graphene agglomeration and dust flying, avoid powder flying, overcome graphene agglomeration , The effect of solving interface compatibility and interaction problems

Pending Publication Date: 2020-05-12
陕西兴汉澜墨科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Based on the problems existing in the prior art, the invention provides a method for preparing an antistatic PVC composite material. The purpose of the invention is to solve the problems of graphene agglomeration and dust flying in the preparation process of the existing antistatic PVC composite material. And the interfacial compatibility and interaction between graphene and polymer matrix

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  • Preparation method of antistatic PVC composite material

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Embodiment 1

[0034] The present invention proposes a preparation method of an antistatic PVC composite material. The first embodiment describes in detail the preparation method of the antistatic PVC composite material proposed by the present invention with a specific example. The preparation method specifically includes:

[0035] (1) Preparation of graphene-calcium oxide composite powder

[0036] Transport the calcium hydroxide powder with a particle size of 300 mesh to the first tubular resistance furnace at 10kg / min, and pass nitrogen gas as the first carrier gas under the condition of 600°C for high-temperature activation treatment, and the nitrogen flow rate is 70 m 3 / h, the activation time is 90min. The catalyst after high-temperature activation is heated to 400° C. under the condition of isolation of oxygen, dispersed to make powder, and passed through acrylic acid for high-temperature modification to obtain the modified catalyst required for graphene growth. Transport the modifie...

Embodiment 2

[0045] The invention proposes a method for preparing an antistatic PVC composite material. On the basis of this, the invention can also derive a method for preparing three-dimensional graphene powder. The preparation method of the three-dimensional graphene powder that the second embodiment of the present invention proposes comprises the following steps:

[0046] (1) Preparation of graphene-calcium oxide composite powder

[0047] Transport the calcium hydroxide powder with a particle size of 325 mesh to the first tubular resistance furnace at 15kg / min, and pass nitrogen gas as the first carrier gas under the condition of 500°C for high-temperature activation treatment, and the nitrogen flow rate is 100 m 3 / h, the activation time is 120min. The catalyst after high-temperature activation is heated to 500° C. under the condition of isolation of oxygen, dispersed to make powder, and passed through stearic acid for high-temperature modification to obtain the modified catalyst re...

Embodiment 3

[0051] The PVC composite material in the prior art is often affected by external impact force. If the impact resistance of PVC pipes is poor, the service life of PVC pipes will be greatly shortened. In order to solve this technical problem, the present invention proposes a preparation method of an antistatic PVC composite material, so that it has good impact resistance on the basis of antistatic effect. The preparation method of the antistatic and impact-resistant PVC composite material that the third embodiment of the present invention proposes comprises the following steps:

[0052] (1) Preparation of graphene-calcium oxide composite powder

[0053] Transport the calcium hydroxide powder with a particle size of 400 mesh to the first tubular resistance furnace at 12kg / min, and pass nitrogen gas as the first carrier gas under the condition of 800°C for high-temperature activation treatment, and the nitrogen flow rate is 50 m 3 / h, the activation time is 60min. The catalyst...

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Abstract

The invention relates to a preparation method of an antistatic PVC composite material. The method comprises the following steps: conveying a precursor into a tubular resistance furnace for high-temperature activation to obtain a catalyst, pulverizing and modifying the catalyst, conveying the catalyst into the tubular resistance furnace, and introducing a carbon source under a hydrogen-nitrogen atmosphere condition to grow graphene to obtain graphene-calcium oxide composite powder; digesting and aging the graphene-calcium oxide compound powder and water in a digestion kettle according to a preset mass ratio, conveying the graphene-calcium hydroxide compound powder into a carbonization kettle, introducing lime kiln gas for carbonization to obtain graphene-calcium carbonate compound powder; and mixing the graphene-calcium carbonate compound powder with PVC, and carrying out melt blending through a twin-screw extruder to obtain the antistatic PVC composite material. According to the preparation method provided by the invention, the problems of agglomeration of graphene and interfacial compatibility and interaction between graphene and a PVC matrix are effectively solved, and the resistivity of the PVC composite material can be regulated and controlled.

Description

technical field [0001] The invention relates to the field of composite material preparation, in particular to a preparation method of an antistatic PVC composite material. Background technique [0002] As a traditional engineering plastic, polyvinyl chloride (PVC) has been vigorously developed and widely used around the world because of its excellent comprehensive performance and relatively low price. Although polyvinyl chloride (PVC) is widely used, it is easy to accumulate static electricity due to friction during use, so that there is a danger of fire or explosion, which hinders its use in coal, petroleum, chemical, textile, dangerous goods warehouses, electronics and wireless. Applications in communications and semiconductor industries. Pure PVC cannot meet the antistatic requirements of the above-mentioned fields. It is necessary to give PVC better antistatic properties before it can be used in coal mines, petroleum, chemicals, textiles, dangerous goods warehouses, ele...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L51/04C08L55/02C08K3/04C08K3/26C08K9/12C08K9/04C01B32/186C01F11/18C01B32/194
CPCC01F11/181C01P2004/01C01P2004/80C08K3/26C08K9/04C08K9/12C08K2003/265C08K2201/001C08K2201/017C08L27/06C08L2201/02C08L2201/04C08L2203/18C08K3/042C01B32/186C01B32/194C08L51/04C08L55/02
Inventor 李文超
Owner 陕西兴汉澜墨科技有限公司
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