Preparation method of composite insulation cross arm core body

A composite insulation and core technology, applied in the field of composite insulation cross-arm core production, can solve the problems of high water absorption, easy hydrolysis and high water absorption at the inner insulation interface

Inactive Publication Date: 2020-06-19
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The currently used composite insulating cross-arm uses polyurethane material as the inner core, uses polyol (white material) and isocyanate (black material) to weigh in different proportions, and then mixes them and pours them into the mold for foaming. After curing and molding, a composite insulating cross-arm is obtained. The core body has the characteristics of both solid and hollow materials, and is light in weight, but because of the heterogeneous interface with the cross-arm mandrel, the interface of this type of cross-arm is poorly bonded. I

Method used

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  • Preparation method of composite insulation cross arm core body
  • Preparation method of composite insulation cross arm core body
  • Preparation method of composite insulation cross arm core body

Examples

Experimental program
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Effect test

Embodiment 1

[0026] A method for preparing a composite insulating cross-arm core, comprising the following steps:

[0027] a. Weigh raw materials, weigh the following raw materials by weight: 21125-28125 parts of red material; 25000-28000 parts of white material; 925.5-1100.26 parts of hollow organic microspheres; ~300.5 parts; dispersant 1265~1525 parts; red material is any one of the following: triethylenediamine, dimethylaminoethyl ether, stannous octoate, pentamethyldiethylenetriamine; white material is E -51 type epoxy resin; the silane coupling agent is γ-aminopropyltriethoxysilane; the defoamer is any one of the following: polyoxyethylene polyoxypropylene pentaerythritol ether, polyoxyethylene polyoxypropylene Alcohol amine ether, polyoxypropylene glyceryl ether and polyoxypropylene polyoxyethylene glyceryl ether, polydimethylsiloxane; the dispersant is any one of the following: fatty acids, aliphatic amides or esters;

[0028] b. Prepare modified hollow organic microbeads, mix the...

Embodiment 2

[0034] A method for preparing a composite insulating cross-arm core, comprising the following steps:

[0035] a. Weigh raw materials, weigh the following raw materials in parts by weight: 24600 parts of red material; 26500 parts of white material; 1012.88 parts of hollow organic microspheres; 481 parts of silane coupling agent; The material is triethylenediamine; the white material is E-51 epoxy resin; the silane coupling agent is γ-aminopropyltriethoxysilane; the defoamer is polyoxyethylene polyoxypropylene pentaerythritol ether; the dispersant is fatty acids;

[0036] b. Prepare modified hollow organic microbeads, mix the hollow organic microbeads weighed in step a and the silane coupling agent, and stir for 5 minutes at a rotating speed of 1000 to 1500 r / min to obtain modified hollow organic microbeads;

[0037]c. prepare the core body filling primary material, mix and stir the red material weighed in step a and the modified hollow organic microspheres obtained in step b (...

Embodiment 3

[0042] A method for preparing a composite insulating cross-arm core, comprising the following steps:

[0043] a. Weigh raw materials, weigh the following raw materials in parts by weight: 28125 parts of red material; 28000 parts of white material; 100.26 parts of hollow organic microspheres; 500.5 parts of silane coupling agent; The material is any one of the following: triethylenediamine, dimethylaminoethyl ether, stannous octoate, pentamethyldiethylenetriamine; the white material is E-51 epoxy resin; the silane coupling agent is γ-aminopropyltriethoxysilane; the defoaming agent is any one of the following: polyoxyethylene polyoxypropylene pentaerythritol ether, polyoxyethylene polyoxypropanolamine ether, polyoxypropylene glyceryl ether and polyoxyethylene Propylene polyoxyethylene glyceryl ether, polydimethylsiloxane; the dispersant is any one of the following: fatty acids, fatty amides or esters;

[0044] b. Prepare modified hollow organic microbeads, mix the hollow organi...

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Abstract

The invention discloses a preparation method of a composite insulation cross arm core body, which belongs to the technical field of composite insulation cross arm core body preparation. The preparation method of the composite insulation cross arm core body comprises the following steps of a, weighing the following raw materials in parts by weight: 21125-28125 parts of a red material, 25000 to 28000 parts of a white material, 925.5 to 1100.26 parts of hollow organic microbeads, 461.5 to 500.5 parts of a silane coupling agent, 231.5 to 300.5 parts of a defoaming agent, and 1265 to 1525 parts ofa dispersing agent, b, preparing modified hollow organic microbeads, c, preparing a core filling primary material, d, preparing a core filling raw material, and e, preparing a composite insulation cross arm core body. The characteristics of low parallel pore and through pore rate, high closed pore rate and low water absorption rate are achieved. Therefore, the corrosion resistance and the aging resistance are improved, and the purpose of improving the internal insulation performance is achieved.

Description

technical field [0001] The invention relates to the technical field of making composite insulating cross-arm cores. Background technique [0002] The currently used composite insulating cross-arm uses polyurethane material as the inner core, uses polyol (white material) and isocyanate (black material) to weigh in different proportions, and then mixes them and pours them into the mold for foaming. After curing and molding, a composite insulating cross-arm is obtained. The core body has the characteristics of both solid and hollow materials, and is light in weight, but because of the heterogeneous interface with the cross-arm mandrel, the interface of this type of cross-arm is poorly bonded. In addition, there are uneven filling bubbles, closed The problem of poor porosity leads to defects such as high water absorption and easy hydrolysis. In the long-term external rain environment (especially high salt spray environment), it will accelerate the aging of the cross-arm and redu...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08L71/02C08L83/04C08K7/22C08K9/06C08J9/00
CPCC08L63/00C08J9/0061C08J9/0014C08K2201/003C08L2201/08C08J2363/00C08J2205/052
Inventor 刘贺晨刘云鹏李乐解卓鹏
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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