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Heat-resistant high-temperature-resistant PVC electric power pipe and preparation method thereof

A power tube and high temperature resistance technology, applied in the field of power tubes, can solve problems such as poor stability, and achieve the effects of good heat resistance, increased mechanical properties, good heat resistance and mechanical properties

Active Publication Date: 2020-07-17
杭州联通管业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing polyvinyl chloride power pipes use polyvinyl chloride resin as the base material, add plasticizers, stabilizers and processing aids, and process them through special mixing devices, but the stability of polyvinyl chloride to light and heat Poor, the softening point is 80°C, and it begins to decompose at 130°C. Without heating the stabilizer, polyvinyl chloride begins to decompose at 100°C, and it decomposes faster above 130°C. Therefore, for PVC power tubes It is necessary to improve the high temperature resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Preparation of modified montmorillonite

[0028] S1: Stir and disperse montmorillonite in deionized water at a solid-to-liquid ratio of 3g / L. After ultrasonic dispersion for 30 minutes, add p-phenylenediamine and ammonia water under nitrogen protection conditions. Montmorillonite, p-phenylenediamine, The mass ratio of ammonia water is 1:5:5, stir and react for 4 hours, then raise the temperature to 80°C and keep the temperature for 4 hours, filter, wash the filter cake with hot water and absolute ethanol, dry it and ultrasonicate according to the solid-liquid ratio of 2g / L Dispersed in toluene to obtain a suspension solution;

[0029] S2: Dissolve di-n-butyltin maleate 10 times the mass of montmorillonite in toluene, the solid-to-liquid ratio of di-n-butyltin maleate and toluene is 1:12g / ml, heat to 120°C and ultrasonically until the solution is completely dissolved , add the suspension, in a nitrogen atmosphere, raise the temperature to 100°C and keep it warm for 12h....

Embodiment 2

[0037] The preparation of modified montmorillonite is the same as that of Example 1.

[0038] Preparation of composite modified filler

[0039] Weigh 50 parts by weight of deionized water, 10 parts by weight of α-methylstyrene, 3 parts of acrylonitrile, 0.01 part of tert-dodecylmercaptan, 0.1 part of cumene hydroperoxide, and 1.4 parts of rosin acid soap and stir and mix To obtain the monomer mixed solution, add 100 parts by weight of deionized water, 0.3 parts by weight of glucose, 0.15 parts by weight of sodium pyrophosphate, 0.4 parts by weight of fatty acid potassium salt and 0.0003 parts by weight of ferrous sulfate solution in the reactor, and stir until the solid is completely After dissolving, add 3 parts by weight of potassium abietate, 0.25 parts by weight of potassium hydroxide and 45 parts by weight of polybutadiene latex, then pass into nitrogen, add 2 parts by weight of modified montmorillonite under nitrogen atmosphere, after stirring and dispersing, Add 8 part...

Embodiment 3

[0044] The preparation of modified montmorillonite is the same as that of Example 1.

[0045] Preparation of composite modified filler

[0046] Weigh 75 parts by weight of deionized water, 20 parts by weight of α-methylstyrene, 6 parts of acrylonitrile, 0.02 part of tert-dodecylmercaptan, 0.2 part of cumene hydroperoxide, and 1.5 parts of rosin acid soap and stir and mix To obtain the monomer mixed solution, add 125 parts by weight of deionized water, 0.18 parts by weight of glucose, 0.12 parts by weight of sodium pyrophosphate, 0.25 parts by weight of fatty acid potassium salt and 0.00015 parts by weight of ferrous sulfate solution in the reactor, and stir until the solid is completely After dissolving, add 1.8 parts by weight of potassium abietate, 0.15 parts by weight of potassium hydroxide and 30 parts by weight of polybutadiene latex, then pass into nitrogen, add 3 parts by weight of modified montmorillonite under nitrogen atmosphere, after stirring and dispersing, Add 1...

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PUM

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Abstract

The invention relates to the technical field of electric power pipes, particularly to a heat-resistant high-temperature-resistant PVC electric power pipe and a preparation method thereof. The heat-resistant high-temperature-resistant PVC electric power pipe disclosed by the invention comprises the following raw materials in parts by weight: 90 to 110 parts of PVC, 95 to 105 parts of CPVC, 30 to 45parts of a composite modified filler, 2 to 3 parts of a heat stabilizer, 40 to 60 parts of a plasticizer, 1 to 2 parts of a processing aid, 0.5 to 1.5 parts of a flame retardant, 0.5 to 1 part of anantioxidant and 0.5 to 1 part of an ultraviolet light absorber. The composite modified filler takes nanometer glass fiber as a skeleton, and an ABS / modified montmorillonite composite layer coats the skeleton. According to the heat-resistant high-temperature-resistant PVC electric power pipe prepared by the invention, the composite modified filler is added into a base material to modify the base material, so the PVC electric power pipe has good heat resistance and high-temperature resistance.

Description

technical field [0001] The invention relates to the technical field of power pipes, in particular to a heat-resistant and high-temperature resistant PVC power pipe and a preparation method thereof. Background technique [0002] The development of electric energy is related to the national economy, the people's livelihood and national security. With the continuous and rapid development of my country's economy and society, the demand for electric power has also entered a period of rapid growth. Recently, with the development of urban planning and construction and the cleanliness and beauty of the city, high-voltage wires are required to be buried underground. Due to the high voltage of the high-voltage cable, it is easy to generate high temperature due to heat generation or instantaneous accidental short circuit, so people usually use plastic pipes, metal pipes or glass steel pipes as the sheathing material of high-voltage cables. [0003] Metal pipes have poor corrosion resist...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L27/24C08L55/02C08K13/06C08K9/10C08K7/14C08K9/04C08K3/34
CPCC08L27/06C08K2201/011C08L2201/08C08L2203/18C08L2203/20C08L2205/035C08L2205/02C08L27/24C08L55/02C08K13/06C08K9/10C08K7/14C08K9/04C08K3/346
Inventor 裘杨燕陈毅明孙东华傅亚斌齐国良
Owner 杭州联通管业有限公司
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