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Conductive rubber for electronic packaging and preparation method thereof

A conductive rubber and electronic packaging technology, applied in the field of electronic packaging materials, can solve the problems of poor resistance stability, need to be improved, and high price of materials, and achieve the effects of good thermal conductivity, good application prospects and simple process

Pending Publication Date: 2021-02-19
珠海京工检测技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although conductive rubber has been commercially applied, its performance still needs to be improved, and the current market of high-end conductive rubber is monopolized by developed countries such as Europe, America and Japan, resulting in high prices. There is an urgent need to develop domestic high-performance conductive rubber with independent intellectual property rights
[0003] As a commonly used conductive material, copper is subject to certain restrictions in conductive rubber due to its easy oxidation and poor resistance stability.

Method used

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  • Conductive rubber for electronic packaging and preparation method thereof
  • Conductive rubber for electronic packaging and preparation method thereof
  • Conductive rubber for electronic packaging and preparation method thereof

Examples

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Comparison scheme
Effect test

preparation example Construction

[0025] The preparation method of the above-mentioned conductive rubber for electronic packaging comprises the following steps:

[0026] Weighing materials—weighing each component according to the parts by weight of claim 1;

[0027] Mixing base rubber——first, roll and masticate the nitrile rubber on the open mill until the nitrile rubber is softened; then put zinc stearate and zinc oxide into the open mill and turn over the rubber. Until the zinc stearate and zinc oxide are melted and softened and sucked into the nitrile rubber; then the nitrile rubber sucked with zinc stearate and zinc oxide is subjected to triangular bagging and rolling in sequence; and then the rolled Inhale zinc stearate and zinc oxide nitrile rubber wrapped rolls, and slowly add conductive fillers, and while adding conductive fillers, add liquid anti-aging agent and softener while turning the rubber, when the conductive fillers are finished Finally, carry out triangular bagging, rolling, and rubber wrapp...

Embodiment 1

[0032] First, weigh the raw materials according to the weight parts corresponding to the formula, and then put 10 parts of NBR1052 glue that has been weighed on the 9-inch open mill with a roller distance of 2 mm to make soft rolls. After softening the NBR1052, separate Put 0.1 parts of zinc stearate (ZnSt) and 0.5 parts of zinc oxide (ZnO) into the open mill gradually in batches, turn over the glue, wait until the materials are melted and softened and sucked into the NBR1052 glue, then adjust the roller distance to 0.2mm The glue is made into a triangle bag 8 times, and the temperature is measured with a temperature probe after turning on the cooling water, and the temperature is controlled at about 50°C. Slowly pour in 1.5 parts of graphene and 25 parts of copper alloy filler. While absorbing graphene, pour 0.2 parts of anti-aging agent styrenated phenol (SP) and 0.6 parts of softener alkane Ether ester (TP-95) is added to the rubber compound, and SP and TP-95 are required t...

Embodiment 2

[0035]First, weigh the raw materials in accordance with the amount of parts by weight corresponding to the formula, and then put 20 parts of NBR1052 glue that has been weighed on the 9-inch open mill with a roller distance of 2 mm to make soft rolls. After softening the NBR1052, separate Put 0.2 parts of zinc stearate (ZnSt) and 1 part of zinc oxide (ZnO) into the open mill little by little, turn over the glue, wait until the materials are melted and softened and sucked into the NBR1052 glue, then adjust the roller distance to 0.2mm The glue is wrapped in triangles 10 times, and the temperature is measured with a temperature probe after turning on the cooling water, and the temperature is controlled at about 50°C. Slowly pour 2 parts of graphene and 30 parts of copper alloy powder filler. While absorbing graphene, pour 0.4 parts of anti-aging agent styrenated phenol (SP) and 1.2 parts of softener oxalic acid while turning the rubber Alkyl ether ester (TP-95) is added to the ru...

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Abstract

The invention provides conductive rubber for electronic packaging and a preparation method thereof. The conductive rubber is prepared from the following components in parts by mass: 100 parts of nitrile rubber; 3-10 parts of zinc oxide; 0-2 parts of zinc stearate; 1-5 parts of an anti-aging agent; 0-3 parts of an accelerant; 1-5 parts of sulfur; 1-6 parts of a softener; and 5-50 parts of a conductive filler. The conductive rubber provided by the invention has the toughness and high elastic property of rubber, also has the electrical conductivity and good thermal conductivity of the conductivefiller, selects the copper alloy with good electrical conductivity and stability as a conductive material, has a wide vulcanization temperature range and a simple process, has excellent thermal properties and mechanical properties, and is suitable for industrial production. The good application prospects and huge potential economic values are realized in the aspect of antistatic materials, and theelectrical conductivity and the thermal conductivity of the conductive rubber are greatly improved.

Description

technical field [0001] The invention belongs to the technical field of electronic packaging materials, in particular to a conductive rubber for electronic packaging and a preparation method thereof. Background technique [0002] Compared with metal solder and paste, conductive rubber is an important connection material with unique advantages, and has been widely used in electronic packaging. Although conductive rubber has been commercially applied, its performance still needs to be improved, and the current market of high-end conductive rubber is monopolized by developed countries such as Europe, America and Japan, resulting in high prices. There is an urgent need to develop domestic high-performance conductive rubber with independent intellectual property rights . [0003] As a commonly used conductive material, copper is subject to certain restrictions in conductive rubber due to its easy oxidation and poor resistance stability. By adding alloying elements, its oxidation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/02C08K13/02C08K3/22C08K5/098C08K3/06C08K3/04C08K3/08C08K5/13
CPCC08K13/02C08K3/22C08K5/098C08K3/06C08K3/042C08K3/08C08K5/13C08K2201/001C08L2201/04C08L2203/206C08K2003/2296C08L9/02
Inventor 马艾丽周丽张二进梁见莹林伟潮
Owner 珠海京工检测技术有限公司