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Antistatic power protection tube and preparation method thereof

A power protection and anti-static technology, applied in the field of anti-static power protection tube and its preparation, can solve the problems of stress concentration, poor compatibility, reduced mechanical properties and processing performance of the power protection tube, etc., to achieve compatibility Good properties, good antistatic ability, the effect of maintaining mechanical properties and processability

Active Publication Date: 2021-09-24
ANHUI RUIFENG PIPE IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Common additives of this type are not very compatible, and will cause stress concentration and crystallization defects in the formed matrix resin, which will greatly reduce the mechanical properties and processing properties of the electric protection tube

Method used

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  • Antistatic power protection tube and preparation method thereof
  • Antistatic power protection tube and preparation method thereof
  • Antistatic power protection tube and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Prepare the modifier:

[0039] Step S11, mix o-phenylenediamine and solvent, add phosphorus oxychloride at a temperature of 20°C, and after the dropwise addition, raise the temperature to 50°C for reflux reaction for 4 hours, and carry out post-treatment after the reaction; post-treatment The process is as follows: the reaction solution is cooled to room temperature, then washed with acetonitrile, and then vacuum-dried at 60°C to constant weight to obtain intermediate 1;

[0040] Step S12, mix p-hydroxybenzaldehyde, dichloromethane and triethylamine, stir and cool down to 0°C under the condition of nitrogen protection, slowly add the dichloromethane solution of intermediate 1 dropwise, after the dropwise addition, keep the temperature No change, monitor the reaction with a TLC plate during the reaction, and carry out post-treatment after the reaction; the post-treatment process is: the obtained reaction solution is washed with deionized water, 5% sodium hydroxide soluti...

Embodiment 2

[0046] Preparation of modified graphene:

[0047] Put graphite oxide into N,N-dimethylformamide, ultrasonically disperse to obtain a dispersion liquid, add a modifier, react for 24 hours under nitrogen protection, then adjust the pH value to 9 with ammonia water, and raise the temperature to 95°C , and then add hydrazine hydrate to react for 1.5h, after the reaction, post-treatment is carried out; the post-treatment process is: the obtained reaction solution is centrifugally washed 3 times with N,N-dimethylformamide, and modified graphene is obtained after washing. .

[0048] Wherein, the dosage ratio of graphite oxide, N,N-dimethylformamide, modifier and hydrazine hydrate is 0.5g:200mL:5g:0.5g, and the modifier is prepared in Example 1.

Embodiment 3

[0050] Preparation of modified graphene:

[0051] Put graphite oxide into N,N-dimethylformamide, ultrasonically disperse to obtain a dispersion liquid, add a modifier, react for 24 hours under nitrogen protection, then adjust the pH value to 9 with ammonia water, and raise the temperature to 95°C , and then add hydrazine hydrate to react for 1.6h, after the reaction, post-treatment is carried out; the process of post-treatment is: the obtained reaction solution is centrifugally washed 3 times with N,N-dimethylformamide, and modified graphene is obtained after washing .

[0052] Wherein, the dosage ratio of graphite oxide, N,N-dimethylformamide, modifier and hydrazine hydrate is 0.5g:200mL:5g:0.5g, and the modifier is prepared in Example 1.

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Abstract

The invention discloses an antistatic electric power protection tube and a preparation method thereof, and belongs to the technical field of electric power tubing. The preparation method of the electric power protection tube comprises the following steps: 1, weighing raw materials; 2, adding polyethylene resin, ethylene propylene diene monomer, morpholine tetrasulfide, magnesium oxide, p-tert-butylphenol formaldehyde resin, 2, 4-dichlorobenzoyl peroxide and sodium carbonate into a mixing machine, performing mixing, and obtaining a premix; 3, adding modified graphene, di-n-octyltin dilaurate and dilauryl thiodipropionate into the premix, and obtaining a mixture; 4, carrying out extrusion granulation on the mixture, and carrying out extrusion molding, cooling and cutting to obtain the antistatic electric power protection tube, wherein the modified graphene has good antistatic capability and meets the requirements; in addition, the modifier is a flame-retardant component, so that a better flame-retardant effect can be achieved without adding a flame retardant, and the mechanical properties and processability of the power protection tube are maintained.

Description

technical field [0001] The invention belongs to the technical field of electric power pipes, and in particular relates to an antistatic electric power protection pipe and a preparation method thereof. Background technique [0002] The power protection tube is a product made of polyethylene resin for hot dip molding or epoxy resin for internal and external coating, and has excellent corrosion resistance. At the same time, the coating itself has good electrical insulation and will not cause electrical corrosion. The power protection tube is an insulating material, which is easy to generate static electricity. When the static charge accumulates to a certain extent, it will discharge sparks, which may cause fire or chemical explosion. In order to make the power tube have excellent antistatic performance, polyethylene resin is usually required For antistatic modification, it is necessary to add a large amount of flame retardant and antistatic agent. Common additives of this typ...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/16C08K9/04C08K3/04C08K5/5399
CPCC08L23/06C08L2203/18C08L2201/02C08L2201/04C08L23/16C08K9/04C08K3/042C08K5/5399
Inventor 范建军聂兴文孙林华高勇
Owner ANHUI RUIFENG PIPE IND CO LTD
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