A kind of monolithic capacitor impregnated wax and preparation method thereof

A technology of monolithic capacitors and dipping wax, used in capacitors, fixed capacitors, circuits, etc., can solve problems such as high cost, softening, and flow, and achieve good performance, good heat resistance and adhesion, and good heat resistance. sexual effect

Active Publication Date: 2017-10-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Use resin materials to achieve moisture resistance and meet electrical performance. The advantages are stable performance and good high temperature performance, but the cost is high.
[0004] CN102453330A discloses a ceramic capacitor impregnated with encapsulation wax and a preparation method thereof. For monolithic capacitors with an operating temperature above 100°C, the method has defects such as softening and flowing.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] No. 80 microcrystalline wax, drop melting point 81.6°C (Jingmen Oil Refinery) 76%

[0045] Polyisobutylene, average molecular weight 1233 (Jinzhou Lubricating Oil Additive Co., Ltd.) 10%

[0046] Polypropylene wax, average molecular weight 9760 (Fushun Petrochemical Research Institute) 8.5%

[0047] 25 # Transformer oil, dielectric loss factor ≤0.005 (Shenyang Xincheng Petrochemical Plant) 5%

[0048] Antioxidant, 2,6-di-tert-butyl-p-cresol (Shenyang Second Reagent Factory) 0.5%.

Embodiment 2

[0050] No. 85 microcrystalline wax, drop melting point 82.6°C (Nanyang Paraffin Fine Chemical Factory) 75%

[0051] Polyisobutylene, average molecular weight 1233 (Jinzhou Lubricating Oil Additive Co., Ltd.) 11%

[0052] Polypropylene wax, average molecular weight 9760 (Fushun Petrochemical Research Institute) 7.8%

[0053] 25 # Transformer oil, dielectric loss factor ≤0.005 (Shenyang Xincheng Petrochemical Plant) 6%

[0054] Antioxidant, 2,6-di-tert-butyl-p-cresol (Shenyang Second Reagent Factory) 0.2%.

Embodiment 3

[0056] No. 85 microcrystalline wax, drop melting point 82.8°C (Nanchong Oil Refinery) 76%

[0057] Polyisobutylene, average molecular weight 1233 (Jinzhou Lubricating Oil Additive Co., Ltd.) 11%

[0058] Polypropylene wax, average molecular weight 9760 (Fushun Petrochemical Research Institute) 7.6%

[0059] 25 # Transformer oil, dielectric loss factor ≤0.005 (Shenyang Xincheng Petrochemical Plant) 5%

[0060] Antioxidant, 2,6-di-tert-butyl-p-cresol (Shenyang Second Reagent Factory) 0.4%.

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Abstract

The invention discloses a monolithic capacitor impregnated wax and a preparation method thereof. Composition by weight: 60% to 85% microcrystalline wax, 5% to 15% butene polymer, 5% to 15% polypropylene wax, 2% to 10% insulating oil, 0.1% to 1.0% % of antioxidants. The impregnated wax of the present invention has the characteristics of good insulation, moisture resistance, heat resistance and adhesion, suitable physical and chemical properties, good use performance, non-toxic, non-polluting, friendly to the environment and the like. The impregnating wax of the present invention is suitable for impregnating monolithic capacitors.

Description

technical field [0001] The invention relates to an impregnating wax, which is especially suitable for impregnating monolithic capacitors. Background technique [0002] Monolithic capacitors have a multi-layer structure with tiny gaps between layers. In order to ensure the final moisture-proof insulation of the product, during the production process of monolithic capacitors, it is required to use impregnated wax to impregnate the surface of monolithic capacitors to achieve insulation and moisture-proof purposes. [0003] Existing patents introduce that the materials used for impregnating and encapsulating capacitors all use resin as the main component. agent. Resin materials are used to achieve moisture resistance and electrical performance. The advantages are stable performance and good high temperature performance, but the cost is high. [0004] CN102453330A discloses a ceramic capacitor impregnated with encapsulating wax and a preparation method thereof. The method has d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G4/22
Inventor 郭慧兵李尚勇
Owner CHINA PETROLEUM & CHEM CORP
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