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Preparation method for automatic-shrinkage insulation protection casing pipe

A technology of insulation protection and automatic shrinkage, applied in the direction of organic insulators, plastic/resin/wax insulators, etc., can solve the problems of application impact, increase product cost, inconvenient operation, etc., and achieve the effect of reducing product cost and saving installation cost

Inactive Publication Date: 2013-12-18
DONGYING DONGGANG RUBBER & PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the cold-shrinkable insulating sleeve does not require open flame heating during installation, which reduces the requirements for the installation environment, but because the cold-shrinkable insulating sleeve is supported by adding a plastic skeleton to the assembled product, it is expanded by mechanical means. , and the plastic skeleton is expensive, which increases the cost of the product and is inconvenient to operate, which greatly affects the application of the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Take the following raw materials calculated by mass percentage: polyvinyl chloride 50%, dioctyl phthalate 38%, tribasic lead sulfate 3%, bisphenol A 1%, barium stearate 1%, stearin Calcium acid 1%, vinyl acetate copolymer 3%, 2-hydroxy-4-n-octoxy benzophenone 1%, calcium carbonate 2%; the preparation steps are: A) First, put the polyvinyl chloride into the mixer In the mixing room, add dioctyl phthalate, tribasic lead sulfate, barium stearate, and calcium stearate in sequence, turn on the mixer, and add bisphenol A and vinyl acetate copolymer when the temperature reaches 75°C. Benzene, 2-hydroxy-4-n-octyloxybenzophenone, put calcium carbonate when the temperature reaches 100℃, remove the material at a low speed before the temperature reaches 120℃, turn on the cooling water, start the cold mixer, The materials are discharged into the cold mixer and discharged when cooled to 35°C, and the granulation is completed; B) Put the above granular materials into the extruder, and ...

Embodiment 2

[0012] Take the following raw materials calculated by mass percentage: polyvinyl chloride 60%, dioctyl phthalate 32%, tribasic lead sulfate 2%, bisphenol A 0.5%, barium stearate 0.5%, stearin Calcium acid 0.5%, vinyl acetate copolymer 2.5%, 2-hydroxy-4-n-octoxy benzophenone 0.5%, calcium carbonate 1.5%; the preparation steps are: A) First, put the polyvinyl chloride into the mixer Add dioctyl phthalate, tribasic lead sulfate, barium stearate, and calcium stearate in the mixing room of the mixing chamber, turn on the mixer, and add bisphenol A and vinyl acetate copolymer when the temperature reaches 80℃. Benzene, 2-hydroxy-4-n-octyloxybenzophenone, add calcium carbonate when the temperature reaches 105℃, remove the material at a low speed before the temperature reaches 120℃, turn on the cooling water, start the cold mixer, The materials are discharged into the cold mixer and discharged when cooled to 40°C, and the granulation is completed; B) Put the above granular materials int...

Embodiment 3

[0015] Take the following raw materials calculated by mass percentage: 60% polyvinyl chloride, 25% dioctyl phthalate, 1.5% tribasic lead sulfate, 0.3% bisphenol A, 0.3% barium stearate, stearin Calcium acid 0.3%, vinyl acetate copolymer 2%, 2-hydroxy-4-n-octoxybenzophenone 0.1%, calcium carbonate 0.5%; the preparation steps are: A) First, put the polyvinyl chloride into the mixer Add dioctyl phthalate, tribasic lead sulfate, barium stearate, and calcium stearate in the mixing room of sulphuric acid. Turn on the mixer and add bisphenol A and vinyl acetate copolymer when the temperature reaches 85℃. Benzene, 2-hydroxy-4-n-octyloxybenzophenone, add calcium carbonate when the temperature reaches 110℃, remove the material at low speed before the temperature reaches 120℃, turn on the cooling water, start the cold mixer, The materials are discharged into the cold mixer, discharged when cooled to 45℃, and the granulation is completed; B) Put the above granular materials into the extrud...

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PUM

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Abstract

The invention discloses a preparation method for an automatic-shrinkage insulation protection casing pipe, which has the technical scheme that the automatic-shrinkage insulation protection casing pipe is polymerized by polymer organic material and is swelled after being dipped in chemical solution; the swelled automatic-shrinkage insulation protection casing pipe is directly sheathed on a workpiece; and with the volatilization of the chemical solution, a product is automatically balanced and shrunk to be fixedly arranged on the workpiece. Because the automatic-shrinkage insulation protection casing pipe adopts a peculiar material formula and a processing method, the automatic-shrinkage insulation protection casing pipe has an automatic shrinkage function in the air and also has the performances of insulation, corrosion resistance, water resistance, moisture resistance, sealing and the like. The automatic-shrinkage insulation protection casing pipe has the advantages that the automatic-shrinkage insulation protection casing pipe can be used in any place without the limitation of forbidding fire. In addition, installation charge is saved. Compared with a chilling shrink type insulation casing pipe, the automatic-shrinkage insulation protection casing pipe has the characteristic that the product cost is greatly lowered due to the fact that no plastic skeletons are used for supporting.

Description

Technical field [0001] The invention relates to a method for preparing a protective sleeve, in particular to a method for preparing an automatic shrinkable insulating protective sleeve. It can be widely used in the indoor and outdoor terminal connection of power cables, the insulation protection of the lead terminals of power equipment such as high voltage switches, and the protection of cables and ropes. Background technique [0002] At present, the heat-shrinkable insulating sleeves commonly used in my country are installed under flame barbecue, so they cannot be installed and used in fire-prohibited places such as petrochemicals, coal mines, warehouses, etc. The product construction is complicated, which limits the scope of use. In order to overcome the above shortcomings of heat-shrinkable insulating sleeves, cold-shrinkable insulating sleeves have been developed in recent years at home and abroad. Although the cold-shrinkable insulating sleeve does not need to be heated by ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08K13/02C08K5/12C08K3/30C08K5/13C08K5/098C08K3/26H01B3/44
Inventor 王辉刘金霆孟超
Owner DONGYING DONGGANG RUBBER & PLASTIC