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Flame-retardant heat-resistant conductive water-based adhesive, and preparation method and application method thereof

A technology of water-based adhesives and flame retardants, applied in the direction of conductive adhesives, adhesives, adhesive types, etc., can solve the problems of poor heat resistance and low conductivity of conductive adhesives, and achieve excellent heat resistance, good Effect of Adhesive Firmness

Pending Publication Date: 2019-08-23
慧迈材料科技(广东)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing conductive adhesives generally have the disadvantages of low conductivity and poor heat resistance, and cannot meet the requirements in the case of high use requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment example 1

[0015] Under the protection of dry nitrogen, 0.8 parts by weight of titanate coupling agent and 11 parts by weight of polyaniline were metered into a four-neck flask, mixed uniformly, and reacted at room temperature for 3 hours to obtain component A.

[0016] 53 parts by weight of polyether polyol (N210) after vacuum dehydration, 11 parts by weight of MDI, 7 parts by weight of flame retardant melamine and component A etc. are poured into the three-necked flask by metering, and then slowly heated up to 90 °C while stirring moderately. The polymerization reaction is carried out at about ℃, and the time taken for the reaction is about 3 hours. After the reaction is complete, cool down to below 60 degrees within 1 minute, otherwise a series of side reactions will occur. Add acetone to reduce the viscosity, then add 6 parts by weight of the hydrophilic chain extender DMPA, 7 parts by weight of the chain extender trimethylolpropane, and 0.3 parts by weight of stannous octoate as a c...

Embodiment example 2

[0020] Under the protection of dry nitrogen, 1.5 parts by weight of KH550, 74 parts by weight of graphene, and epoxy resin were metered into a four-neck flask, mixed uniformly, and reacted at room temperature for 3 hours to obtain component A.

[0021] After vacuum dehydration, 80 parts by weight of PBA-2000, 30 parts by weight of HDI, 25 parts by weight of intumescent flame retardant and component A are measured and poured into a three-necked flask, and then the temperature is slowly raised to about 90°C while stirring moderately. The polymerization reaction was carried out, and the time taken for the reaction was about 3 hours. After the reaction is complete, cool down to below 60 degrees within 1 minute, otherwise a series of side reactions will occur. Add acetone to reduce the viscosity, then add 17 parts by weight of the hydrophilic chain extender DMPA, 13 parts by weight of the chain extender 1,4-butanediol, 0.3 parts by weight of stannous octoate and dibutyltin dilaurat...

Embodiment example 3

[0025] After vacuum dehydration, 40 parts by weight of PEG-1000, 8 parts by weight of IPDI and 9 parts by weight of flame retardant FRC-6 are measured and poured into a three-necked flask, and then slowly heated to about 90°C while stirring moderately to carry out the polymerization reaction , and the time taken for the reaction was about 3 hours. After the reaction is complete, cool down to below 60 degrees within 1 minute, otherwise a series of side reactions will occur. Add acetone to reduce the viscosity, then add 7 parts by weight of hydrophilic chain extender DMPA, 8 parts by weight of chain extender diethylene glycol, and 0.2 parts by weight of dibutyltin dilaurate as a catalyst, in the temperature range of 65 degrees to 70 degrees React within until the -NCO (isocyanate group) group begins to stabilize, and then cool it down to 35 degrees to obtain the desired prepolymer. Under the condition of high shear force, while stirring, accurately drop 1.2 parts by weight of c...

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Abstract

The invention provides a flame-retardant heat-resistant conductive water-based adhesive, and a preparation method and application method thereof. The flame-retardant heat-resistant conductive water-based adhesive is prepared from the following components in parts by mass: 0.6-74 parts of conductive filler, 6-25 parts of a flame retardant, 5-30 parts of isocyanate, 30-80 parts of macromolecular polyol and 5-15 parts of a chain extender. The flame-retardant conductive adhesive disclosed by the invention has relatively good adhesion firmness, good heat resistance and excellent conductivity, has arelatively good use value, does not contain organic solvents, and accords with the green and environment protection idea of the current society.

Description

technical field [0001] The invention relates to the technical field of adhesives, in particular to a flame-retardant, heat-resistant and conductive water-based adhesive. The flame-retardant and conductive water-based adhesive prepared by the invention has the characteristics of flame-retardant and conductive as well as green and environment-friendly, and can be widely used in various fields. Background technique [0002] Conductive adhesive is an adhesive with a certain conductivity after curing or drying. It usually consists of a matrix and conductive fillers, namely conductive particles. Usually, the bonding of the matrix combines the conductive particles together to form a conductive path. Realize the conductive connection of the adhered materials. At the same time, due to the miniaturization and miniaturization of electronic components and the rapid development of high density and high integration of printed circuit boards, conductive adhesives can be made into pastes to...

Claims

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Application Information

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IPC IPC(8): C09J9/02C09J175/08C09J175/06
CPCC09J9/02C09J175/08C09J175/06C08L2201/02C08L2201/08C08L79/02C08K5/34922C08L63/00C08K3/042C08K5/5353
Inventor 闵永刚张增耀刘屹东
Owner 慧迈材料科技(广东)有限公司
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