Preparation and application methods of electric heating resistance slurry
A resistance paste and electric heating technology, which is applied to heating element materials, resistors, conductive materials dispersed in non-conductive inorganic materials, etc., can solve the problems of high cost, high lead content, silver ion migration, etc., and achieve Good anti-aging performance, increase electrical conductivity, and slow down migration
Inactive Publication Date: 2019-04-23
RIZHAO ZHONGBANG ELECTRONICS CO LTD
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Problems solved by technology
[0007] The invention not only overcomes the problems of high cost, high lead content and migration of silver ions in the existing electronic paste, but also meets the requirements of curved surface printing on the paste, and provides a heating resistance paste and a preparation method thereof. The material is also suitable for curved surface printing process. After high temperature sintering, it has the function of rapid heating. It can be quickly heated to 400°C within 10s, and has good fatigue resistance, which improves the service life of the slurry.
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[0039] The present invention will be further described in detail through specific embodiments below, but the protection scope of the present invention is not limited thereby.
[0040] The components and contents (Wt%) of Examples 1-3 are shown in Table 1.
[0041] Table 1: Components and contents of Examples 1-3
[0042]
[0043] In this embodiment, the micron-sized spherical silver powder is prepared by blending two spherical silver powders with different particle sizes according to different ratios. The bulk density of micron spherical silver powder is 2.0g / cm 3 ~3.5g / cm 3 , and its particle size distribution D50 is 0.3 μm to 3.0 μm.
[0044] In this embodiment, the resin carrier is ethyl cellulose, and the viscosity of said ethyl cellulose is 90-100 Pa·S.
[0045] In this embodiment, the lead-free glass powder is lead-free low-melting glass powder, the softening temperature is 500-700°C, and its bulk density is 0.5g / cm 3 ~2.0g / cm 3 , and its particle size distribut...
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Abstract
The invention provides preparation and application methods of electric heating resistance slurry and belongs to the technical field of polymer chemistry and polymer type novel materials. The electricheating resistance slurry provided by the invention is prepared by stirring and grinding micron-grade spherical-like silver powder, ethyl cellulose, lead-free glass powder, a solvent and an auxiliaryagent; the electric heating resistance slurry is printed to a heating base material through a silk screen and is sintered at high temperature of 800 to 850 DEG C to form a heating film layer; after electrification, the film layer can be rapidly heated and can reach the temperature of 400 DEG C within about 10 s; the electric heating resistance slurry is mainly applicable to the aspects of thick-film resistors, resistance networks, hybrid integrated circuits, electronic cigarettes, rapid electric heating kettles, windshields, show windows and the like and the fields of resistors and electrodesand the like, which have special purposes. The electric heating resistance slurry provided by the invention has good adhesion force and conductive performance; the stability of the slurry can be improved, and the electric heating resistance slurry also has the advantages of low cost, no environmental pollution and simple preparation technology.
Description
technical field [0001] The invention relates to the technical field of polymer chemistry and new polymer materials, in particular to an electric heating resistance slurry, and also relates to a method for preparing and using the electric heating resistance slurry. Background technique [0002] Electronic paste is a composite material that integrates multiple materials. It is the basic material for manufacturing thick film components. According to different uses and sintering temperatures, it can be subdivided into many types, such as conductive paste, resistance paste and high temperature, Medium temperature and low temperature sintering paste, which contains inorganic non-metallic, organic polymer and metal materials, is mainly used to manufacture thick film integrated circuits, varistors, membrane switches, flexible circuits, crystal resonators, crystal vibrators, sensitive elements devices and other electronic components. With the development of the electronic informatio...
Claims
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IPC IPC(8): H01B1/16H01B1/22H01B13/00H01C7/00H05B3/10
CPCH01B1/16H01B1/22H01B13/00H01C7/003H05B3/10
Inventor 陈军伟于跃卜志杰王宏
Owner RIZHAO ZHONGBANG ELECTRONICS CO LTD