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Multilayer ceramic capacitor impregnation wax and preparation method thereof

A technology of monolithic capacitors and impregnated wax, applied in capacitors, fixed capacitors, circuits, etc., can solve the problems of flow, high cost, softening, etc., and achieve good performance, heat resistance, good adhesion, and strong adhesion Effect

Active Publication Date: 2015-05-13
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 multilayer ceramic capacitor impregnation wax and a preparation method thereof. The multilayer ceramic capacitor impregnation wax comprises, by weight, 60-85% of microcrystalline wax, 5-15% of butane polymer, 5-15% of polypropylene wax, 2-10% of insulation oil, and 0.1-1.0% of antioxidant. The impregnation wax of the invention has the characteristics of good insulation performance, moisture resistance, heat resistance and adhesion, suitable physical and chemical properties, good using performance, non-toxicity, no pollution, and environment-friendliness. The impregnation wax of the invention is applicable to impregnation of multilayer ceramic 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 Applications(China)
IPC IPC(8): H01G4/22
Inventor 郭慧兵李尚勇
Owner CHINA PETROLEUM & CHEM CORP
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