Method for manufacturing silver powder conductive adhesive tape capable of preventing oil absorption deformation and silver powder conductive adhesive tape thereof

Abstract

The invention discloses a method for manufacturing a silver powder conductive adhesive tape capable of preventing oil absorption deformation, which comprises the following steps of: preparing silver powder conductive adhesive, preparing nano silver powder and raw silica gel, putting the nano silver powder and the raw silica gel into an internal mixer, fully stirring and mixing the nano silver powder and the raw silica gel through the internal mixer, uniformly adding the nano silver powder into the raw silica gel, and manufacturing the silver powder conductive adhesive; and preparing adhesive tape insulating glue, namely mixing fluorinated silicone rubber with common silicone rubber with the same hardness, and uniformly mixing by using an open mill, so that the two rubber materials are fully fused and uniformly mixed to prepare the adhesive tape insulating glue, wherein the insulating glue is made of a blend material of fluorosilicone rubber and common silicone rubber, has the special performance of fluorosilicone rubber such as oil resistance and aging resistance of fluorosilicone rubber, and has good compatibility of common silicone rubber, and the low-resistance conductive rubber strip with the oil resistance characteristic is manufactured.

Description

technical field [0001] The invention relates to the technical field of conductive rubber strips, in particular to a method for making a silver powder conductive rubber strip that prevents deformation due to oil absorption and the silver powder conductive rubber strip. Background technique [0002] Conductive strip, mainly made of silicone rubber, is a tool for electricians; conductive strip is also called silicone rubber conductive connector, the main material is made of silicone rubber; the hardness of conductive strip is generally 65 degrees, it is made of a layer of Charged silica gel and a layer of silica gel with a conductive layer are superimposed multiple times; the conductive strips have a spacing: from small to large, they are 0.05, 0.10, 0.18, and 0.25mm. Generally, the commonly used spacing is 0.18mm; such as electronic scales, electronic Scales, etc. [0003] There are two main problems with existing conductive strips [0004] 1) The resistance is relatively la...

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Problems solved by technology

[0004] 1) The resistance is relatively large. Generally, the conductive material is acetylene black, and the volume resistivity is above 2.5cm / Ω. When trying to connect the PCB and LCD of a precision instrument, the resistance is too large, the data transmission is slow, and the display is not clear. High energy consumption, can not meet the requirements;

[0005] 2) In addition to conductive materials, ordinary high-temperature vulcanized silicone rubber (HTV) is generally used as insulating materials, but HTV is not resistant to low-viscosity silicone oil (KF-96A-6CS) and other organic solvents. For equipment that needs to be encapsulated with low-viscosity silicone oil , the conductive strip made of ordinary HTV material will absorb low-viscosity silicone oil and swell and deform, resulting in the failure of the conductive strip

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