Ultrathin foam conductive adhesive tape

A conductive tape, ultra-thin technology, applied in the direction of conductive adhesives, film/sheet adhesives, adhesives, etc., can solve the problem of non-adhesive foam products such as cost

Active Publication Date: 2015-05-20
明尼苏达矿业制造特殊材料(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The patent relates to a conductive foam and its preparation method, but the foam itself is not sticky and the cost of the product will be high

Method used

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  • Ultrathin foam conductive adhesive tape
  • Ultrathin foam conductive adhesive tape
  • Ultrathin foam conductive adhesive tape

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0049] (Meth)acrylate monomers useful for preparing (meth)acrylate pressure sensitive adhesive copolymers according to the present invention can be monomeric (meth)acrylate esters of non-tertiary alcohols containing 1 to 18 carbon atoms And preferably an average of 4 to 12 carbon atoms.

[0050] Examples of monomers suitable for use as (meth)acrylate monomers include esters of acrylic or methacrylic acid with non-tertiary alcohols such as ethanol, 1-propanol, 2-propanol, 1-butanol , 2-butanol, 1-pentanol, 2-pentanol, 3-pentanol, 2-methyl-1-butanol, 3-methyl-1-butanol, 1-hexanol, 2-hexanol , 2-methyl-1-pentanol, 3-methyl-1-pentanol, 2-ethyl-1-butanol, 3,5,5-trimethyl-1-hexanol, 3-heptanol , 1-octanol, 2-octanol, isooctyl alcohol, 2-ethyl-1-hexanol, 1-decanol, 2-propylheptanol, 1-dodecanol, 1-tridecanol , 1-tetradecyl alcohol, etc. Although combinations of two or more different (meth)acrylate monomers are suitable, in some embodiments the preferred (meth)acrylate monomer is (...

Embodiment 7～8

[0107] According to the following table 5, examples 7-8 were obtained according to the preparation process of examples 1-6, the slurry polymer used was S2, the formula did not contain tackifying resin, and the conductive particles were nickel powder-A (Ni-A), Polymer core-shell particles are selected from FN-80SDE. The thickness of the obtained adhesive tape is controlled at 0.10-0.12mm. The performance test results of the embodiments are shown in Tables 6-7.

[0108] The formula composition of table 5. embodiment 7~8 (by weight)

[0109]

[0110] Table 6. Peel Adhesion of Examples 7-8 (unit: oz / in)

[0111]

[0112] Table 7. The Z-axis contact resistance of Examples 7-8 (unit: mΩ)

[0113]

[0114]

Embodiment 9～10

[0116] According to the following table 8, examples 9-10 were obtained according to the preparation process of examples 1-6, the used slurry polymer was S3, the tackifying resin was UH115, the conductive particles were silver-plated glass microspheres, and polymer core-shell particles Choose 461DE20d70. The thickness of the obtained adhesive tape is controlled at 0.050-0.065mm. The performance test results of the embodiments are shown in Tables 9-10.

[0117] The formula composition of table 8. embodiment 9~10 (by weight)

[0118]

[0119] Table 9. Peel Adhesion of Examples 9-10 (unit: oz / in)

[0120]

[0121] Table 10. Z-axis contact resistance of Examples 9-10 (unit: mΩ)

[0122]

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Abstract

The invention provides an ultrathin foam conductive adhesive tape which comprises a pressure-sensitive adhesive layer and a release film on at least one side of the pressure-sensitive adhesive layer, wherein the pressure-sensitive adhesive layer comprises a (methyl) acrylate copolymer base, and expanded polymer core-shell particles and conductive particles dispersed in the base; and the thickness of the pressure-sensitive adhesive layer is 2-500 micrometers. The ultrathin foam conductive adhesive tape has lower cost, adjustable compressible characteristic, favorable viscosity and favorable conductivity.

Description

technical field [0001] The invention relates to a novel ultra-thin foam-like conductive adhesive tape and a preparation method thereof, which are mainly used in electronic products, especially consumer electronic products for conducting conductive connections at key parts. Background technique [0002] Conductive pressure-sensitive adhesives can be divided into two categories: isotropic Conductive Adhesives and Anisotropic Conductive Adhesives. The former has the same conductivity in all directions; the latter is insulating in the XY direction, but conductive only in the Z-axis direction. [0003] Conductive tapes with longitudinal (Z-axis) conductive function are widely used in electronic products, especially in consumer electronic products, for conducting conductive connections of key parts, mainly for bonding electromagnetic shielding materials and electrostatic discharge materials. At present, the main vertical (Z-axis) conductive tape is composed of pressure-sensitive ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/02C09J9/02C09J133/04
Inventor 张文杰
Owner 明尼苏达矿业制造特殊材料(上海)有限公司
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