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A kind of heat-resistant fire-resistant SMT red glue and preparation method thereof

A fire-resistant and heat-resistant technology, applied in the field of heat-resistant and fire-resistant SMT red glue and its preparation, can solve the problems of heat resistance and poor fire resistance, and achieve the effect of improving heat resistance and strong high temperature resistance

Active Publication Date: 2018-01-26
东莞市佳迪新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the patch adhesive also has the defects of poor heat resistance and fire resistance

Method used

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  • A kind of heat-resistant fire-resistant SMT red glue and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Heat-resistant and fire-resistant SMT red glue, its components and parts by weight are: 55 parts of epoxy resin E-51, 17 parts of 4,4'-diaminodiphenylsulfone, 2 parts of liquid nitrile rubber, 10 parts of calcium carbonate, 12 parts of hydrogenated castor oil, 0.6 parts of alkylbenzene sulfonate, 4 parts of phosphorus flame retardant, 8 parts of 1-4-butanediol diglycidyl ether, 0.7 parts of permanent red, 8.5 parts of PVDF emulsion, phosphating Boron 10 parts.

[0025] The steps of its preparation method are as follows:

[0026] (1) Disperse the silane coupling agent in an aqueous ethanol solution with a mass dispersion of 75%, and obtain a coupling agent solution after dispersing evenly, add boron phosphide powder to the coupling agent solution, and then boron phosphide powder and silane coupling The weight ratio of the joint agent is 1:21, adjust the pH value to 5, stir electromagnetically at 85°C for 4 hours, leave it at room temperature for 10 hours, then filter it...

Embodiment 2

[0029] Heat-resistant and fire-resistant SMT red glue, its components and parts by weight are: 54 parts of epoxy resin E-51, 16 parts of 4,4'-diaminodiphenylsulfone, 3.5 parts of liquid nitrile rubber, 8 parts of calcium carbonate, 15 parts of hydrogenated castor oil, 0.5 parts of alkylbenzene sulfonate, 3.5 parts of phosphorus flame retardant, 10 parts of 1-4-butanediol diglycidyl ether, 0.9 parts of permanent red, 9.5 parts of PVDF emulsion, phosphating Boron 14 parts.

[0030] The steps of its preparation method are as follows:

[0031] (1) Disperse the silane coupling agent in an aqueous ethanol solution with a mass dispersion of 75%, and obtain a coupling agent solution after dispersing evenly, add boron phosphide powder to the coupling agent solution, and then boron phosphide powder and silane coupling The weight ratio of the joint agent is 1:21, adjust the pH value to 5, stir electromagnetically at 85°C for 4 hours, leave it at room temperature for 10 hours, then filte...

Embodiment 3

[0034] Heat-resistant and fire-resistant SMT red glue, its components and parts by weight are: 60 parts of epoxy resin E-51, 19 parts of 4,4'-diaminodiphenylsulfone, 4.5 parts of liquid nitrile rubber, 6 parts of calcium carbonate, 14 parts of hydrogenated castor oil, 0.9 parts of alkylbenzene sulfonate, 2.5 parts of phosphorus flame retardant, 9 parts of 1-4-butanediol diglycidyl ether, 1 part of iron red, 10 parts of PVDF emulsion, boron phosphide 12 servings.

[0035] The steps of its preparation method are as follows:

[0036] (1) Disperse the silane coupling agent in an aqueous ethanol solution with a mass dispersion of 75%, and obtain a coupling agent solution after dispersing evenly, add boron phosphide powder to the coupling agent solution, and then boron phosphide powder and silane coupling The weight ratio of the joint agent is 1:21, adjust the pH value to 5, stir electromagnetically at 85°C for 4 hours, leave it at room temperature for 10 hours, then filter it, and...

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Abstract

The invention provides heatproof and fireproof SMT adhesive. The SMT adhesive is prepared from, by weight, 50-60 parts of epoxy resin, 16-22 parts of a latent curing agent, 2-5 parts of flexibilizer, 5-10 parts of filler, 10-15 parts of a thixotropic agent, 0.5-1 part of a wetting agent, 2-4 parts of phosphorus-based flame retardant, 7-12 parts of reactive diluent, 0.5-1 part of pigment, 8-10 parts of PVDF emulsion and 9-14 parts of boron phosphide. The invention further provides a preparing method of the heatproof and fireproof SMT adhesive. The heatproof and fireproof SMT adhesive is high in heat resistance and fire resistance.

Description

Technical field: [0001] The invention relates to a kind of SMT red gum, in particular to a heat-resistant and fire-resistant SMT red gum and a preparation method thereof. Background technique: [0002] SMT red glue, also known as patch glue and SMT adhesive, is an adhesive that evenly distributes hardeners, pigments, solvents, etc. in red paste, and is mainly used to fix components on printed boards. Dispense by dispensing or stencil printing, paste the components and put them into an oven or reflow soldering machine to heat and harden. What makes it different from the so-called solder paste is that once heated and hardened, it will not melt when heated again, which means that the thermal hardening process of SMT red glue is irreversible. The use effect of SMT patch adhesive will vary due to different heat curing conditions, connected objects, equipment used, and operating environment. When using it, SMT red adhesive should be selected according to the production process. ...

Claims

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Application Information

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IPC IPC(8): C09J163/00C09J11/08C09J11/06C09J11/04
Inventor 李晓明
Owner 东莞市佳迪新材料有限公司