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A self-limiting temperature conductive ink, preparation method and heating ceramics

A conductive ink, self-limiting temperature technology, applied in the direction of ink, electric heating device, ohmic resistance heating, etc., can solve the problems of inability to achieve overall temperature control, heating power attenuation, etc., to prevent circuit damage and heat attenuation, and maintain long-term Use, effects from a wide range of sources

Active Publication Date: 2022-01-11
清远市简一陶瓷有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The main purpose of the present invention is to provide a self-limiting temperature conductive ink and its preparation method, aiming to improve the technical problems of the existing heat-generating ceramics, which easily lead to attenuation of heating power due to local overheating, and cannot achieve overall temperature control

Method used

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  • A self-limiting temperature conductive ink, preparation method and heating ceramics
  • A self-limiting temperature conductive ink, preparation method and heating ceramics
  • A self-limiting temperature conductive ink, preparation method and heating ceramics

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preparation example Construction

[0040] A preparation method of self-limiting temperature conductive ink, comprising the steps of:

[0041] S1. According to the mass percentage of carbon-based conductive filling material 18% ~ 45%, self-limiting temperature material 6% ~ 10%, resin bonding material 20% ~ 48%, additive 3% ~ 6%, solvent 25% ~ 45% , mixing the carbon-based conductive filling material, self-temperature-limiting material, resin binder, additive and solvent, and then ball milling for more than 1 hour, making the mixture fully ground and dispersed until the particle size of the mixture is <10um, to obtain the self-limiting temperature conductive ink;

[0042] The carbon-based conductive filling material is at least one of graphene, nano-carbon powder and carbon nanotubes; the resin binder is a resin with a melting point greater than 320° C., and the particle size of the resin binder is 3-3 10 μm; the solvent is at least one of diethylene glycol butyl ether, diethylene glycol methyl ether, terpineol,...

Embodiment 1

[0052] A preparation method of self-limiting temperature conductive ink, comprising the steps of:

[0053] S1. According to mass percentage, carbon-based conductive filler material 27%, self-limiting temperature material 8%, resin adhesive 30%, additive 3% (1% dispersant, 2% leveling agent), solvent 32% (10% terpineol, 22% propylene glycol diacetate) are mixed and ball milled for more than 1 hour, and the mixture is fully ground and dispersed until the particle size of the mixture is <10um to obtain the self-limiting temperature conductive ink;

[0054] The carbon-based conductive filling material is 30% graphene, 30% nano-carbon powder and 40% carbon nanotubes;

[0055] The preparation process of the self-limiting temperature material comprises the following steps:

[0056] S11. By mass percentage, 56% BaTiO 3 , 32% SrTiO 3 , 6% Cr 2 o 3 , 4%La 2 o 3 , 0.7% CaCO 3 , 0.8% SiO 2 and 0.5% Al 2 o 3 After mixing, BaTiO3, SrTiO 3 、Cr 2 o 3 and La 2 o 3 The mass rati...

Embodiment 2

[0062] A preparation method of self-limiting temperature conductive ink, comprising the steps of:

[0063] S1. According to mass percentage, 24% of carbon-based conductive filling material, 7% of self-limiting temperature material, 24% of resin bonding material, 2% of additives (0.5% of dispersant, 1.5% of leveling agent), and 43% of solvent (8% isophorone, 35% diethylene glycol butyl ether) are mixed and ball milled for more than 1 hour, and the mixture is fully ground and dispersed until the particle size of the mixture is <10um, and the self-limiting temperature conductive ink is obtained;

[0064] The carbon-based conductive filling material is graphene and nano-carbon powder, and the mass ratio of graphene and nano-carbon powder is 1.5:1;

[0065] The preparation process of the self-limiting temperature material comprises the following steps:

[0066] S11. By mass percentage, 48% BaTiO 3 , 38% SrTiO 3 , 7% Cr 2 o 3 , 5%La2 o 3 , 0.7% CaCO 3 , 1%SiO2 2 and 0.3% Al ...

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Abstract

The invention relates to the technical field of conductive ink, and discloses a self-limiting temperature conductive ink, a preparation method and a heating ceramic, which are prepared from the following raw materials in mass percentages: 18%-45% of carbon-based conductive filling material, and 6% of self-limiting temperature material ~10%, resin binder 20%~48%, additive 3%~6%, solvent 25%~45%; the self-limiting temperature material is prepared from the following raw materials in mass percentage: BaTiO 3 41%~65%, SrTiO 3 30%~50%, Cr 2 o 3 5%~9%, La 2 o 3 3%~7%, CaCO 3 0.5%~1%, SiO 2 0.4%~1%, Al 2 o 3 0.1% to 0.5%. By adding a self-limiting temperature material to the conductive ink formula, it has a self-limiting temperature function to prevent circuit damage and thermal attenuation caused by overheating of the circuit. The resistance value can increase rapidly under high temperature conditions, effectively making the self-limiting temperature conductive ink in This temperature range stops heating, the heating temperature will not be higher than 120 degrees, and the internal resin bonding material will not melt, which has little impact on the internal structure of the heating tile and can be used for a long time.

Description

technical field [0001] The invention relates to the technical field of conductive ink, in particular to a self-limiting temperature conductive ink, a preparation method and heating ceramics. Background technique [0002] Heating film is one of the commonly used heating materials for heating ceramics. The heating film contains a layer of graphene film resistors, which are printed on PET films with graphene resistor paste. When external substances such as water vapor infiltrate into the heating film during the use of the heating ceramics, the water vapor will cause some metal components to rust, and the rusted components may be damaged. When some debris falls and covers the heating film, the heating film will Local high temperature will be generated in this area. Generally, the accumulated heat temperature of thin film resistors cannot exceed the softening point temperature of the substrate (below 130°C), otherwise overheating will cause the heating film (PET film) to soften a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D11/52C09D11/03C09D11/106C09D11/102H05B3/14
CPCC09D11/52C09D11/03C09D11/106C09D11/102H05B3/141
Inventor 区邦熙朱联烽苏伟劲杨君之邓波李志林李志豪
Owner 清远市简一陶瓷有限公司
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