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Water-based acrylic thermal-conductive double-sided tape and preparation method thereof

A water-based acrylic, double-sided adhesive tape technology, applied in adhesives, non-polymer adhesive additives, film/sheet adhesives, etc., can solve problems such as uneven heat conduction, insufficient dispersion, and poor film formation , to achieve excellent electrical insulation effect, easy to uniform glue penetration, and excellent adhesion

Inactive Publication Date: 2012-07-11
常熟市富邦胶带有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Existing water-based acrylic pressure-sensitive adhesives prepared with water-based acrylic heat-conducting pressure-sensitive adhesives will encounter insufficient dispersion, agglomeration, poor film-forming properties, or uneven heat conduction
Improving the film formation and thermal conductivity uniformity of water-based acrylic heat-conducting pressure-sensitive adhesives has always been a difficult problem, and no one or enterprise has made a breakthrough
At the same time, the thermal conductivity of the solvent-based pressure-sensitive adhesive thermally conductive double-sided tape basically does not exceed 0.9w / m·k, and the thermal conductivity is not good.

Method used

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  • Water-based acrylic thermal-conductive double-sided tape and preparation method thereof
  • Water-based acrylic thermal-conductive double-sided tape and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Such as figure 1 The manufacturing steps of the water-based acrylic thermally conductive double-sided tape shown are:

[0024] 1) Preparation of the upper and lower pressure-sensitive adhesive layers: the upper and lower pressure-sensitive adhesive layers 1, 3 are made of 86% water-based high temperature resistant acrylic pressure-sensitive adhesive doped with 3% ceramic powder and 2% nitrogen It is made of aluminum, 6% boron nitride, 1.5% dispersant, 1.5% coupling agent, stirred at 50°C for 2 hours. The water-based high temperature resistant acrylic pressure sensitive adhesive is preferably selected from HT-160 water-based high temperature resistant acrylic pressure-sensitive adhesive produced by Kunshan Shimei Chemical Co., Ltd., ceramic powder, aluminum nitride and boron nitride are preferably, but not limited to, EK 50nm ceramics produced by Shanghai Huzheng Nano Technology Co., Ltd. Powder, YN 50nm aluminum nitride and YC 50nm boron nitride, the dispersant and coupli...

Embodiment 2

[0029] Only change the mass percentage of the raw materials for the upper and lower pressure-sensitive adhesive layers in step 1) to: water-based high temperature resistant acrylic pressure-sensitive adhesive 87%, ceramic powder 2%, aluminum nitride 1%, boron nitride 7% , Dispersant 1.2%, coupling agent 1.8%; change the curing temperature in step 3) to 115℃, and the speed to 20m / min. The rest is the same as the description in Example 1.

Embodiment 3

[0031] Only change the mass percentages of the raw materials for the upper and lower pressure-sensitive adhesive layers in step 1) to: water-based high temperature resistant acrylic pressure-sensitive adhesive 86.5%, ceramic powder 2.5%, aluminum nitride 1.5%, boron nitride 6.5% , Dispersant 1.5%, coupling agent 1.5%; change the curing temperature in step 3) to 135℃, and the speed to 30m / min. The rest is the same as the description in Example 1.

[0032] The water-based acrylic thermally conductive double-sided adhesive tape prepared by the above examples has a uniform film formation, a tolerance rate of less than or equal to 3%, a thermal conductivity of 1.18w / m·k (180°C), and a peel strength of 26 n / 25mm.

[0033] The invention discloses a water-based acrylic heat-conducting double-sided adhesive tape and a manufacturing method thereof. Unlike ordinary heat-conducting double-sided adhesive tapes that use glass fiber fabrics with higher surface density, they use grid-like glass fi...

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Abstract

The invention provides a water-based acrylic thermal-conductive double-sided tape and a preparation method of the double-sided tape, comprising an upper pressure-sensitive adhesive layer, a glass fiber fabric layer and a lower pressure-sensitive adhesive layer, wherein two sides of the glass fiber layer is coated with the upper pressure-sensitive adhesive layer and the lower pressure-sensitive adhesive layer, respectively, and the upper and lower pressure-sensitive adhesive layer are water-based acrylic thermal-conductive pressure-sensitive adhesive layers. The water-based acrylic thermal-conductive double-sided tape combines the characteristics of a thermal-conductive material and an adhesive tape, namely, high-effective thermal-conductivity, easy operation and powerful adhesion of an adhesive tape, and excellent electrical insulated effect, and is widely used in industries and fields such as high-power transistors, heat sinks, integrated circuits, filler of a gap between a metal structure and a chassis, LED (light-emitting diode) display screens, notebook computers, mobile phones and the like.

Description

Technical field [0001] The present invention relates to the technical field of adhesive tapes and their production, in particular to a water-based acrylic thermally conductive double-sided tape, and also relates to a manufacturing method of the water-based acrylic thermally conductive double-sided tape. Background technique [0002] Solvent-based pressure-sensitive adhesives will leave volatile organic compounds after curing. When encountering high temperature, it will gradually volatilize, forming an environmental hormone phenomenon, which will pollute the human body and the surrounding environment. Solvent-based pressure-sensitive adhesives are flammable, explosive and harmful, especially the high toxicity of most organic solvents containing "triphenylene", which are harmful to the human body and the surrounding environment. [0003] Most of the existing thermally conductive double-sided adhesive tapes are prepared with solvent-based pressure-sensitive adhesive as a carrier and ...

Claims

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Application Information

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IPC IPC(8): C09J7/04C09J133/00C09J11/04
Inventor 沈加平
Owner 常熟市富邦胶带有限责任公司
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