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Organosilicon sealing glue with moderate toughness, and preparation method thereof

A silicone and sealant technology, applied in the direction of adhesives, adhesive additives, non-polymer adhesive additives, etc., to achieve the effect of low modulus and high elongation

Inactive Publication Date: 2019-04-30
CHINA BLUESTAR CHENGRAND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the problems of silicone sealants in the prior art, and provides a moderately tough silicone sealant. The silicone sealant has a certain modulus and high elongation, and the cured product has a certain shape. stability, deformation resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A moderately tough silicone sealant, comprising the following raw materials in parts by weight:

[0030] Medium viscosity α, ω-dihydroxy polydimethylsiloxane 65 parts

[0031] Low viscosity α, ω-dihydroxy polydimethylsiloxane 30 parts

[0032] 5 parts of simethicone

[0033] 5 parts of dimethyl dibutylketoxime silane

[0034] Polyethylene glycol 3 parts

[0035] 10 parts of fumed titanium dioxide

[0036] Nano calcium carbonate 20 parts

[0037] Methyltriacetoxysilane 5 parts

[0038] Di-tert-butoxydiacetoxysilane 5 parts

[0039] Dioctyltin dilaurate 0.5 parts

[0040] Stannous octoate 0.3 parts

[0041] 8 parts of methylphenylbis(N-methylacetamido)silane.

Embodiment 2

[0043] A moderately tough silicone sealant, comprising the following raw materials in parts by weight:

[0044] Medium viscosity α, ω-dihydroxy polydimethylsiloxane 70 parts

[0045] Low viscosity α, ω-dihydroxy polydimethylsiloxane 35 parts

[0046] 10 parts of simethicone

[0047] 10 parts of dimethyl dibutyl ketoximosilane

[0048] Polyethylene glycol 5 parts

[0049] Fumed titanium dioxide 15 parts

[0050] Nano calcium carbonate 30 parts

[0051] 10 parts of methyltriacetoxysilane

[0052] Di-tert-butoxydiacetoxysilane 10 parts

[0053] Dioctyltin dilaurate 1.0 parts

[0054] Stannous octoate 0.5 parts

[0055] 12 parts of methylphenylbis(N-methylacetamido)silane.

Embodiment 3

[0057] A moderately tough silicone sealant, comprising the following raw materials in parts by weight:

[0058] Medium viscosity α, ω-dihydroxy polydimethylsiloxane 67.5 parts

[0059] Low viscosity α, ω-dihydroxy polydimethylsiloxane 32.5 parts

[0060] 7.5 parts of simethicone

[0061] 7.5 parts of dimethyl dibutylketoxime silane

[0062] Polyethylene glycol 4 parts

[0063] 12.5 parts of fumed titanium dioxide

[0064] Nano calcium carbonate 25 parts

[0065] 7.5 parts of methyltriacetoxysilane

[0066] Di-tert-butoxydiacetoxysilane 7.5 parts

[0067] Dioctyltin dilaurate 0.75 parts

[0068] Stannous octoate 0.4 parts

[0069] 10 parts of methylphenylbis(N-methylacetamido)silane.

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Abstract

The invention relates to an organosilicon sealing glue with moderate toughness, and a preparation method thereof, and belongs to the technical field of organosilicon sealing glues, wherein the organosilicon sealing glue comprises medium-viscosity [alpha],[omega]-dihydroxy polydimethylsiloxane, low-viscosity [alpha],[omega]-dihydroxy polydimethylsiloxane, dimethyl silicone oil, dimethyl dibutanoneoximido silane, polyethylene glycol, fumed titanium dioxide, nano-scale calcium carbonate, methyltriacetoxysilane, di-tert-butoxydiacetoxysilane, dioctyltin dilaurate, stannous octoate, and methylphenyl bis(N-methylacetamido)silane. The organosilicon sealing glue of the present has moderate toughness within a controlled range.

Description

technical field [0001] The invention relates to a sealant and a preparation method thereof. More specifically, the invention relates to a moderately tough silicone sealant and a preparation method thereof, belonging to the technical field of silicone sealants. Background technique [0002] In the packaging of some electronic products or other products, it is often required that the silicone sealing material not only has a certain degree of flexibility, but also has a certain degree of toughness, so as to meet the normal use of such electronic products under some special environmental conditions. This requires the sealing material to have mechanical properties of a certain modulus and high elongation after curing. At the same time, the cured product is required to have certain shape stability and deformation resistance. Therefore, this new type of silicone sealing material has become a research hotspot. [0003] The State Intellectual Property Office published an invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J183/06C09J11/08C09J11/06C09J11/04
CPCC08K2003/2241C08K2003/265C08K2201/011C08K2201/014C08L2203/206C08L2205/025C08L2205/035C09J11/04C09J11/06C09J11/08C09J183/06C08L83/06C08L83/04C08K13/02C08K3/22C08K3/26C08K5/5419C08K5/57
Inventor 高川余海艳王煦怡赵奕刘咏梅
Owner CHINA BLUESTAR CHENGRAND CO LTD
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