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Special dealcoholized sealant applied to electronic appliances

A technology for electronic appliances and sealants, applied in the directions of adhesives, chemical instruments and methods, non-polymer adhesive additives, etc., can solve the problems of danger, brittle cracking of the encapsulant, sealing failure, etc., to avoid the phenomenon of reversion , the effect of durable adhesion, high tensile strength and elongation

Inactive Publication Date: 2018-10-09
SUZHOU DATONG ADVANCED MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If there is a phenomenon of reversion on the packaging glue of electronic appliances containing rubber components, the packaging glue will become brittle and crack, resulting in seal failure, and moisture in the atmosphere can enter the interior of the appliance, resulting in the danger of short circuit and electric shock

Method used

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  • Special dealcoholized sealant applied to electronic appliances
  • Special dealcoholized sealant applied to electronic appliances

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Experimental program
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Embodiment 1-4

[0015] For the pre-drying treatment of pigments and fillers composed of nano-calcium carbonate and heavy calcium carbonate, it needs to be dehydrated for more than 4 hours in an environment of 110°C before use; 100 parts of 107 glue, 2-20 parts of silicone oil, and 80-120 parts of nano-calcium carbonate Parts, 30-70 parts of heavy calcium carbonate, 2-8 parts of whitening agent can be added, and put into the stirring tank in turn. During this process, the rotation speed needs to be kept at 1200r / min, the vacuum is turned on, and the heating device is turned on, and the temperature reaches above 120°C time, keep warm for 3 hours; keep the speed at 600r / min and cool down to below 40°C, add 5-15 parts of cross-linking agent, stir in vacuum for 60 minutes, then add 2-5 parts of composite coupling agent, 0.5-2 parts of chelated tin catalyst portion, stirred in vacuum for 20 minutes to obtain the finished product.

[0016] According to Table 1,

[0017] Element

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PUM

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Abstract

The invention relates to the technical field of encapsulation adhesives and particularly relates to a special dealcoholized sealant applied to electronic appliances. The sealant comprises the following components: 107 adhesive, silicone oil, nano calcium carbonate, ground calcium carbonate, methyltrimethoxysilane, silane modified resin, a complex coupling agent and a chelated tin catalyst. The encapsulation adhesive is capable of maintaining high tensile strength and elongation in the environment with high temperature and high humidity; the sealant has persistent adhesion, is capable of effectively avoiding the occurrence of reversion phenomenon, and is especially applicable to electronic appliance products.

Description

technical field [0001] The invention relates to the technical field of packaging glue, in particular to a special dealcoholized sealant for electronic appliances. Background technique [0002] The reversion phenomenon is the decrease of the modulus and tensile strength of the vulcanized rubber caused by the long-term heat aging of silicone rubber. The reason for reversion is that the network structure is destroyed and some ring structures are formed. When natural rubber or synthetic polyisoprene is vulcanized for too long in a high temperature and high humidity environment, reversion often occurs. If there is a reversion phenomenon on the packaging glue of electronic appliances containing rubber components, the packaging glue will become brittle and crack, resulting in seal failure, and moisture in the atmosphere can enter the interior of the appliance, causing the danger of short circuit and electric shock. [0003] The purpose of the present invention is to provide a new...

Claims

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Application Information

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IPC IPC(8): C09J183/04C09J11/04C09J11/06C09K3/10
CPCC08K2003/265C08K2201/011C08K2201/014C08L2203/206C08L2205/025C08L2205/03C09J11/04C09J11/06C09J183/04C09K3/10C08L83/04C08L101/00C08K3/26C08K5/5419
Inventor 任天斌安晓东刘新石祥凯
Owner SUZHOU DATONG ADVANCED MATERIAL