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Method for preparing oily electrothermal conversion ink, and ink prepared by preparation method

An electric heating and ink technology, applied in ink, household utensils, applications, etc., can solve the problems of too many hydrophilic groups on the surface, difficult to control printing quality, poor printability, etc., achieve simple curing conditions, improve adaptability, and resist The effect of high flexibility

Pending Publication Date: 2019-11-19
XIAMEN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN108530996A then announces a kind of preparation method of water-based graphene high-conductivity ink, yet, the viscosity of water-based ink is lower, and printability is poorer, and printing quality is difficult to control, and product electrothermal power density is not uniform enough, and surface hydrophilic group Excessive, easy to absorb moisture

Method used

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  • Method for preparing oily electrothermal conversion ink, and ink prepared by preparation method
  • Method for preparing oily electrothermal conversion ink, and ink prepared by preparation method
  • Method for preparing oily electrothermal conversion ink, and ink prepared by preparation method

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Effect test

Embodiment 1

[0045] According to the present invention, the expanded graphite of 450 times ratio is mechanically pulverized to D50=200μm to obtain pulverized expanded graphite; the pulverized expanded graphite and conductive carbon black are respectively composed of two-component fillers at a mass ratio of 8:1 ; Mix the two-component filler 10%, acrylic resin 25%, rheology additive castor oil (the amount of conductive filler is 5%), silane coupling agent KH-560 (the amount of conductive filler is 1%) And the rest is a mixed solvent composed of terpineol and ethanol in a mass ratio of 3:7 to obtain a mixture; stir the mixture with a high-speed mixer for more than 10 minutes to obtain a uniform and non-foaming ink precursor dispersion; the ink precursor The body dispersion is ball milled to a fineness of less than 20 μm, and the viscosity is 1000 to 13000 mPa·s according to different printing methods to obtain an oil-based electrothermal conversion ink. Its physical and chemical characteristic...

Embodiment 2

[0064] According to the present invention, 250-fold expanded graphite is pulverized by airflow to D50=200μm to obtain pulverized expanded graphite; the pulverized expanded graphite, high-purity nickel powder and conductive carbon black are respectively in a mass ratio of 1:8:1 To form a three-component filler; mix the three-component filler 20%, epoxy resin 10%, dispersant polyethylene glycol 100 (the amount is 10% of the mass of the conductive filler), rheology additive silica (the amount 2% of the amount of conductive filler), silane coupling agent KH-550 (the amount of 0.1% of the amount of conductive filler) and the rest is a mixed solvent composed of propylene glycol n-propyl ether and DBE in a mass ratio of 1:3 to obtain Mixture; Stir the mixture with a high-speed mixer for more than 10 minutes to obtain a uniform and non-foaming ink precursor dispersion; sand the ink precursor dispersion to a fineness of less than 20μm, and a viscosity of 1000 to 13000mPa according to dif...

Embodiment 3

[0066] According to the present invention, the expanded graphite of 600 magnification is pulverized by airflow to D50=25μm to obtain pulverized expanded graphite; the pulverized expanded graphite, carbon nanotubes and conductive carbon black are respectively in a mass of 3:1:2 The ratio constitutes a three-component filler; mixing the three-component filler 4%, epoxy resin 10%, polyurethane resin 5%, dispersant sodium dodecylbenzene sulfonate (the amount of conductive filler is 3%), flow Bentonite (the dosage is 1.5% of the conductive filler), the silane coupling agent A-171 (the dosage is 5% of the conductive filler) and the rest are ethyl acetate and 1-methyl-2 pyrrolidone according to 3: A mixed solvent composed of a mass ratio of 2 to obtain a mixture; stir the mixture with a high-speed mixer for more than 10 minutes to obtain a uniform and non-foaming ink precursor dispersion; the ink precursor dispersion is milled to a low fineness through three rollers At 20μm, the visco...

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Abstract

The invention provides a method for preparing an oily electrothermal conversion ink. The method comprises: crushing expanded graphite to obtain crushed expanded graphite; pre-mixing the crushed expanded graphite, an electric conduction filler, a resin, an auxiliary agent and a solvent to obtain a premix; adding a solvent to the premix, and stirring to obtain a uniform and foam-free ink precursor dispersion liquid; and peeling the ink precursor dispersion liquid to obtain the oily electrothermal conversion ink, wherein the mass percentages of the resin, the solvent and the auxiliary agent respectively are 10-40%, 35-80% and 0.3-4%. According to the present invention, the prepared oily electrothermal conversion ink has good adaptability to printing processes, and further has high electrothermal film uniformity.

Description

Technical field [0001] The invention relates to a preparation method of oil-based electrothermal conversion ink, in particular to a preparation method of oil-based electrothermal conversion ink with excellent electrical conductivity and far-infrared performance. Background technique [0002] Far-infrared radiation electric heating film has the advantages of energy saving, environmental protection, simple installation, diverse forms, health care and physical therapy. The radiant electric heating film heating system uses electricity as the energy source and pure resistance as the heating element to heat the room in the form of far-infrared heat. It is made by printing, processing, and hot pressing electrothermal ink and metal current carrier between the insulating base film. Among them, the electrothermal ink used to prepare the electrothermal conversion film with good printability and thermal aging resistance is the key technology of this type of product. [0003] Because graphene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/52C09D11/03
CPCC09D11/03C09D11/52
Inventor 郑南峰曹昉吴炳辉
Owner XIAMEN UNIV
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