Sealing wax for electronic element coil

A technology of electronic components and sealing wax, which is applied in the direction of electrical components, electrical solid devices, circuits, etc., can solve the problems of difficulty in adapting to the actual requirements of market competition, high cost, poor high temperature performance and toughness and plasticity, and achieve excellent electrical insulation Performance and moisture resistance, good plasticity and flexibility, excellent effect at high temperature performance

Inactive Publication Date: 2003-11-26
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage of simply using ordinary paraffin or microcrystalline wax is that they are cheap, but they have defects such as poor high-temperature performance and toughness and plasticity. change
The use of resin-based sealing materials has the advantage of good high-temperature performance, but has defects such as poor toughness and plasticity and high cost, and cannot meet the current market competition requirements for low cost.
The existing patents introduce t

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0028] Embodiment: (below all represent by weight percentage)

[0029] experiment method

[0030] The following test methods are the usual ones for testing waxes used in the electronics industry used in the examples.

[0031] Dropping melting point GB / T 8036

[0032] Softening point GB / T 4507

[0033] Penetration GB / T 4985

[0034] Mechanical impurities GB / T 511

[0035] Corrosion test GB / T 5096

[0036] Dielectric constant GB / T 1409

[0037] Volume resistivity GB / T 1410

[0038] The preparation of the sealing wax of Examples 1, 2, 3, 4, and 5 in the present invention is to add raw materials in order at a temperature of about 110-140 ° C and mix and melt to form a uniform and transparent wax liquid, which is cooled after filtration forming.

Embodiment 6

[0039] Example 6 is a typical imported sealing material.

Embodiment 1

[0041] 80 # Microcrystalline wax, dropping point 82.4°C (Nanchong Oil Refinery) 76%

[0042] Polymer wax L-912, average molecular weight 3000 (Beijing No. 2 Auxiliary Factory) 1%

[0043] Polymerized rosin, ring and ball softening point 100°C (Wuzhou Arakawa Chemical Co., Ltd.) 20%

[0044] Polyisobutylene, average molecular weight 20000 (Jinzhou Refinery) 3%

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PUM

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Abstract

The present invention relates to a kind of electronic element sealing wax composite comprising petroleum wax, polymer wax, tackifier and plasticizer. The sealing wax has the features of high droppingpoint, excellent high temperature performance, good plasticity and flexibility, excellent electric performance, powerful sealing force, short solidification time, no corrosion, no impurity, etc., andhas the sealing cost lower than available sealing material with resin as main component. The sealing wax is suitable for positioning and sealing electronic tuner, inductance coil and other electronicelement coil.

Description

1. Technical field [0001] The invention relates to a wax composition, in particular to a sealing wax composition, especially a sealing wax composition suitable for positioning and sealing coils of electronic tuners and other electronic components. 2. Background technology [0002] In the two processes of automatic waxing and manual waxing in the production process of electronic components such as electronic tuners, it is required to use sealing materials to fix the hollow coil to accurately adjust the inductance of the hollow coil. The advantage of simply using ordinary paraffin or microcrystalline wax is that they are cheap, but they have defects such as poor high-temperature performance and toughness and plasticity. change. The use of resin-based sealing compounds has the advantage of good high-temperature performance, but has defects such as poor toughness and plasticity and high cost, and cannot meet the current market competition requirements for low cost. The existin...

Claims

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Application Information

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IPC IPC(8): C08L91/06C09K3/10H01L23/28
Inventor 胡伟龙边立忱李尚勇杨光
Owner CHINA PETROLEUM & CHEM CORP
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