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PET material for transformer skeleton and preparation method of PET material

A technology for transformer skeleton and raw materials, applied in the field of PET materials, can solve the problems of poor dimensional stability, slow crystallization speed, and low thermal conductivity, and achieve the effects of improving thermal conductivity, reducing dosage, and increasing porosity

Inactive Publication Date: 2018-11-30
GUANGDONG GERUI NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing PET materials have the disadvantages of slow crystallization speed, poor dimensional stability, and low thermal conductivity. Even if modified by conventional nucleating agents and inorganic fillers, the performance is still relatively general.

Method used

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  • PET material for transformer skeleton and preparation method of PET material
  • PET material for transformer skeleton and preparation method of PET material
  • PET material for transformer skeleton and preparation method of PET material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A kind of PET material that is used for transformer skeleton, comprises the raw material of following weight part:

[0042]

[0043] The heat-conducting fiber is composed of polyacrylonitrile fiber filaments and heat-conducting fillers uniformly distributed on the surface of the polyacrylonitrile fiber filaments.

[0044] The thermally conductive filler of the present invention is preferably composed of nano-alumina and nano-aluminum nitride at a weight ratio of 1.5:2, the particle size of the nano-alumina is 41nm, and the particle size of the nano-aluminum nitride is 59nm.

[0045] Wherein, the preparation method of described heat-conducting fiber comprises the steps:

[0046] A. Dissolving polyacrylonitrile in N,N-dimethylformamide to form a spinning stock solution, the mass concentration of polyacrylonitrile in the spinning stock solution is 30wt%, and then electrospinning to obtain the original polyacrylonitrile Silk;

[0047] B. Soak the polyacrylonitrile prec...

Embodiment 2

[0057] A kind of PET material that is used for transformer skeleton, comprises the raw material of following weight part:

[0058]

[0059] The heat-conducting fiber is composed of polyacrylonitrile fiber filaments and heat-conducting fillers uniformly distributed on the surface of the polyacrylonitrile fiber filaments.

[0060] The thermally conductive filler of the present invention is preferably composed of nano-alumina and nano-aluminum nitride at a weight ratio of 1:1, the particle size of the nano-alumina is 35nm, and the particle size of the nano-aluminum nitride is 55nm.

[0061] Wherein, the preparation method of described heat-conducting fiber comprises the steps:

[0062] A. Dissolving polyacrylonitrile in N,N-dimethylformamide to form a spinning stock solution, the mass concentration of polyacrylonitrile in the spinning stock solution is 20wt%, and then electrospinning to obtain the original polyacrylonitrile Silk;

[0063] B. Soak the polyacrylonitrile precur...

Embodiment 3

[0073] A kind of PET material that is used for transformer skeleton, comprises the raw material of following weight part:

[0074]

[0075]

[0076] The heat-conducting fiber is composed of polyacrylonitrile fiber filaments and heat-conducting fillers uniformly distributed on the surface of the polyacrylonitrile fiber filaments.

[0077] Among them, the thermally conductive filler of the present invention is preferably composed of nano-alumina and nano-aluminum nitride in a weight ratio of 2:3, the particle size of the nano-alumina is 47nm, and the particle size of the nano-aluminum nitride is 63nm.

[0078] Wherein, the preparation method of described heat-conducting fiber comprises the steps:

[0079] A. Dissolving polyacrylonitrile in N,N-dimethylformamide to form a spinning stock solution, the mass concentration of polyacrylonitrile in the spinning stock solution is 40wt%, and then electrospinning to obtain the original polyacrylonitrile Silk;

[0080] B. Soak the ...

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Abstract

The invention relates to the technical field of a PET material, in particular to a PET material for a transformer skeleton and a preparation method thereof. The PET material comprises 80 to 100 partsof PET, 20 to 40 parts of heat conducting fibers, 10 to 30 parts of glass fibers, 0.1 to 1 part of core forming agent, 0.1 to 1 part of light stabilizer and 0.1 to 1 part of antioxidant, wherein the heat conducting fibers consist of polyacrylonitrile fiber yarns and heat conducting filler uniformly distributed on the surface of the polyacrylonitrile fiber yarns. The heat conducting filler is uniformly distributed on the surface of the polyacrylonitrile fiber yarn, the heat conducting fiber can effectively establish a heat conducting channel in PET by virtue of the fiber structure of the polyacrylonitrile fiber yarn, so that the heat conductivity of the PET material can be improved, and the PET material can meet the high insulation and high heat dissipation requirement of the transformer skeleton.

Description

technical field [0001] The invention relates to the technical field of PET materials, in particular to a PET material used for a transformer skeleton and a preparation method thereof. Background technique [0002] Skeleton, also known as transformer bobbin, or transformer wire frame, collectively referred to as Bobbin in English, is the main structural component of the transformer. Its main functions include providing winding space for the copper wire in the transformer and fixing the magnetic core in the transformer. Transformers are widely used in today's society, and the corresponding main body is also indispensable, so the skeleton plays an irreplaceable role. [0003] PET (polyethylene terephthalate) is a crystalline polymer with excellent creep resistance, fatigue resistance, friction resistance, wear resistance, chemical resistance, dimensional stability, gas and With low water vapor permeability and excellent electrical insulation, it is widely used in the fields of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L33/20C08L23/08C08K13/04C08K3/22C08K3/28C08K3/34C08K5/134C08K7/14
CPCC08K2003/2227C08K2003/282C08K2201/011C08L67/02C08L2201/08C08L2205/03C08L33/20C08L23/0815C08K13/04C08K3/22C08K3/28C08K3/34C08K5/1345C08K7/14
Inventor 郑宇航
Owner GUANGDONG GERUI NEW MATERIALS CO LTD