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Highly-heat-conductive aromatic polyoxadiazole fibrid mica insulating material, and preparation method and application thereof

A technology of polyoxadiazole and precipitated fibers, which is applied in the direction of synthetic cellulose/non-cellulose material pulp/paper, fiber raw material processing, textiles and papermaking, etc., which can solve the problems of unformed and achieve high physical properties and insulation Sexuality, physical properties, and product processability are good

Active Publication Date: 2015-11-18
JIANGSU ZANPOD NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many researches on high thermal conductivity insulating materials at home and abroad, but there is still no molding technology.

Method used

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  • Highly-heat-conductive aromatic polyoxadiazole fibrid mica insulating material, and preparation method and application thereof
  • Highly-heat-conductive aromatic polyoxadiazole fibrid mica insulating material, and preparation method and application thereof
  • Highly-heat-conductive aromatic polyoxadiazole fibrid mica insulating material, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Prepare high thermal conductivity fiber mica insulation material according to the following ratio:

[0030] POD fibrid 5 parts by weight

[0031] Muscovite 70 parts by weight

[0032] Aluminum oxide 25 parts by weight

[0033] First, the surface of the POD precipitated fiber with the above content is treated by disc grinding and ultrasonic to make the degree of beating 55-75°SR, and then put into the slurry mixing tank together with the above content of mica and alumina, and then hydraulically The mixer is fully stirred for 8 to 20 minutes until the raw materials are evenly dispersed. Then the uniformly dispersed pulp flows into the stock stabilization box, and the online valve of the stock stabilization box is adjusted to make the stock evenly distributed on the forming net of the rotary paper machine. When the slurry runs along the forming wire, the excess water is filtered out from the slurry by using the pressure of the couch roll, and the paper embryo is driven ...

Embodiment 2

[0037] Prepare high thermal conductivity fiber mica insulation material according to the following ratio:

[0038] POD fibrid 5 parts by weight

[0039] 70 parts by weight of calcined mica

[0040] Aluminum oxide 25 parts by weight

[0041] The preparation method is the same as that of Example 1, the performance index is shown in Table 2, and the test results of thermal conductivity are shown in Table 5.

[0042] Table 2 Product Measured Indicators

[0043]

Embodiment 3

[0045] Prepare high thermal conductivity fiber mica insulation material according to the following ratio:

[0046] POD fibrids 7 parts by weight

[0047] Muscovite 83 parts by weight

[0048] Aluminum oxide 10 parts by weight

[0049] The preparation method is the same as that of Example 1, the performance index is shown in Table 3, and the test results of thermal conductivity are shown in Table 5.

[0050] Table 3 Product Measured Indicators

[0051]

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Abstract

The invention discloses a highly-heat-conductive aromatic polyoxadiazole fibrid mica insulating material. The material is composed of the following raw materials by mass: 5% to 30% of aromatic polyoxadiazole fibrid, 5% to 30% parts of aluminium oxide and 40% to 90% of mica. The material is prepared through the following steps: subjecting the aromatic polyoxadiazole fibrid to through disc grinding and ultrasound for surface treatment, allowing beating degree of the aromatic polyoxadiazole fibrid to be 55 to 75 degree SR, then carrying out full mixing with mica and aluminium oxide, allowing aluminium oxide to be evenly distributed between fiber and mica, and carrying out formaking for one-step shaping by applying a papermaking way so as to obtain the highly-heat-conductive aromatic polyoxadiazole fibrid mica insulating material. The highly-heat-conductive aromatic polyoxadiazole fibrid mica insulating material provided by the invention accumulates a variety of characteristics of POD and mica, has good product processing property, can be widely applied in the fields of high-end electronics and microelectronics, as well as the fields like various large-scale electrical equipments, engines, and civil or other special purposes.

Description

technical field [0001] The invention relates to a composite insulating material, in particular to a high thermal conductivity insulating material containing aromatic polyoxadiazole (abbreviated as POD) precipitated fiber, mica and spherical high-purity alumina. The invention also relates to the preparation method and application of the high thermal conductivity insulating material. Background technique [0002] With the rapid development of high-power electrical and electronic products, the heat generated will cause the insulation performance of the product to decrease, the power will be reduced, the service life will be shortened, and various accidents will be caused. Adopting effective methods to solve structural heat dissipation and researching materials with high thermal conductivity are urgent tasks for new heat dissipation insulation structures and high thermal conductivity insulation materials. For large and medium-sized high-voltage generators, the heat generation, ...

Claims

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Application Information

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IPC IPC(8): C08L79/06C08K7/18C08K3/34D21H13/20
CPCC08K3/34C08K7/18C08K2201/003C08K2201/014C08L2203/20C08L2205/16C08L79/06
Inventor 杨远凤吴萌周建峰
Owner JIANGSU ZANPOD NEW MATERIAL CO LTD