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Capacitor encapsulating wax

A technology for capacitors and potting wax, applied in chemical instruments and methods, other chemical processes, etc.

Inactive Publication Date: 2012-03-21
TONGLING XINTAI ELECTRIC APP & CAPACITOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Simply using commercial paraffin or microcrystalline wax has defects such as poor ductility and plasticity, which is easy to be brittle at low temperature and has relatively large shrinkage. The use of oil has large losses and is easy to leak, which does not meet the requirements of the current production plant.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A metallized film capacitor potting wax, consisting of the following components, the parts by weight of each component are:

[0033] Petroleum wax 40

[0034] Polyisobutylene 10

[0035] Vaseline 20

[0036] sulfur 10

[0037] 200 mesh straw ash 4

[0038] Attapulgite 10 .

Embodiment 2

[0040] A metallized film capacitor potting wax, consisting of the following components, the parts by weight of each component are:

[0041] Petroleum wax 60

[0042] Polyisobutylene 15

[0043] Vaseline 30

[0044] sulfur 15

[0045] straw ashes 5

[0046] Attapulgite 15.

Embodiment 3

[0048] A metallized film capacitor potting wax, consisting of the following components, the parts by weight of each component are:

[0049] Petroleum wax 50

[0050] Polyisobutylene 13

[0051] Vaseline 25

[0052] sulfur 13

[0053] straw ashes 4

[0054] Attapulgite 13.

[0055] The preparation methods of the above embodiments are as follows: at a temperature of 100° C. to 110° C., various raw materials are mixed and melted to form a uniform liquid, which is filtered and shaped.

[0056] The experimental data of potting wax that each embodiment makes is as follows:

[0057] Example 1 2 3 Volume resistivity (50°C), Ωcm 3.41*10 15 4.33*10 15 5.46*10 15 moisture none none none Mechanical impurities none none none

[0058] The melting point of the potting wax of the present invention is higher, indicating that the potting wax of the present invention has good toughness and plasticity, has excellent electrical properties, an...

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Abstract

The invention provides a metalized-film capacitor encapsulating wax consisting of the following components in parts by weight: 40-60 parts of petroleum wax, 10-15 parts of polyisobutene, 20-30 parts of vaseline, 10-15 parts of sulfur, 3-5 parts of straw ash and 10-15 parts of attapulgite clay. The metalized-film capacitor encapsulating wax has excellent plasticity, good electrical property and proper kinematic viscosity and is convenient to fill the gap of the metalized-film capacitor.

Description

technical field [0001] The invention relates to the field of capacitor potting materials, in particular to an anti-metallization film capacitor potting wax. Background technique [0002] In the production of metallized film capacitors, the main dielectric and the pores between the plate and the main dielectric are usually potted with a material to improve capacitance and insulation performance, and improve partial discharge and heat resistance. Simply using commercial paraffin wax or microcrystalline wax has defects such as poor ductility and plasticity, which is easy to be brittle at low temperature and has large shrinkage, and the use of oil has large loss and is easy to leak, which does not meet the requirements of current production plants. Existing patents introduce metallized film capacitor potting materials with oil as the main component, such as JP03035513 patent introduction using polybutene-alkylbenzene-cottonseed oil mixture potting, US 6,280,659 potting capacitor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L91/06C08L23/20C08K3/06C08K3/34C09K3/10
Inventor 孔祥新
Owner TONGLING XINTAI ELECTRIC APP & CAPACITOR
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