A kind of acid silicone sealant and preparation method thereof

A sealant, acid silicone technology, applied in the direction of adhesives, adhesive additives, polymer adhesive additives, etc., can solve the problems affecting the product quality of acid silicone sealants, low production efficiency, and products with skinning, etc. Better compatibility, higher strength, and less skinning

Active Publication Date: 2017-02-22
扬州晨化新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This production method has the following disadvantages: not only the production efficiency is low, but also the materials are sometimes exposed to the air during the manufacturing process, which may easily cause skinning in the product and affect the product quality of the acidic silicone sealant; and sometimes cause sagging phenomenon, thus affecting the construction

Method used

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  • A kind of acid silicone sealant and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0031] A kind of acidic silicone sealant is prepared by the following steps:

[0032] 1) Take the following components by weight: 200 parts of 107 glue, 120 parts of 330 silicone oil (the viscosity of 330 silicone oil is 100-5500 centipoise), 20 parts of fumed silica (the moisture content of fumed silica is less than 1%), 10 parts of crosslinking agent (including 7 parts of methyltriacetylsilane and 3 parts of methyldiacetylsilane), 5 parts of thixotropic agent (polyether modified silicone oil), 0.09 parts of catalyst (tin acetate);

[0033] 2) Add 200 parts of 107 glue and 5 parts of thixotropic agent to the glue tank, vacuumize and stir for 3 to 5 minutes;

[0034] 3) After step 2) the stirring is stopped, open the pumping valve to suck 10 parts of cross-linking agent into the glue tank, close the pumping valve, start stirring, keep the vacuum degree -0.09~-0.1MPa, first stir at low speed for 5~10 minutes , and then stir at high speed for 5 to 10 minutes;

[0035] 4) After...

Embodiment 2

[0041] A kind of acidic silicone sealant is prepared by the following steps:

[0042] 1) Take the following components by weight: 205 parts of self-produced 107 glue, 125 parts of 330 silicone oil (the viscosity of 330 silicone oil is 100-5500 centipoise), 25 parts of fumed silica (the moisture content of fumed silica is less than 1%) 15 parts of crosslinking agent (including 10 parts of methyltriacetylsilane and 5 parts of methyldiacetylsilane), 6 parts of thixotropic agent (polyether modified silicone oil), 0.12 parts of catalyst (tin acetate).

[0043] 2) Add 205 parts of 107 glue and 6 parts of thixotropic agent to the glue tank, vacuumize and stir for 3 to 5 minutes;

[0044] 3) After step 2) the stirring is stopped, open the pumping valve to inhale 15 parts of cross-linking agent, close the pumping valve, start stirring, keep the vacuum degree -0.09~-0.1MPa, stir at low speed for 5 to 10 minutes, then stir at high speed for 5 minutes ~10 minutes;

[0045] 4) After the ...

Embodiment 3

[0051] A kind of acidic silicone sealant is prepared by the following steps:

[0052]1) Take the following components by weight: 220 parts of self-produced 107 glue, 130 parts of 330 silicone oil (the viscosity of 330 silicone oil is 100-5500 centipoise), 30 parts of fumed silica (the moisture content of fumed silica is less than 1%) 20 parts of crosslinking agent (15 parts of methyltriacetylsilane and 5 parts of methyldiacetylsilane), 4 parts of thixotropic agent (polyether modified silicone oil), 0.15 parts of catalyst (tin acetate).

[0053] 2) Add 220 parts of 107 glue and 4 parts of thixotropic agent to the glue tank, vacuumize and stir for 3 to 5 minutes;

[0054] 3) After step 2) the stirring is stopped, open the pumping valve to inhale 20 parts of cross-linking agent, close the pumping valve, start stirring, and keep the vacuum degree -0.09~-0.1MPa, stir at low speed for 5 to 10 minutes, then stir at high speed for 5 minutes ~10 minutes;

[0055] 4) After the stirrin...

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Abstract

The invention discloses an acidic silicone sealant and a preparation method, the preparation method comprises the following steps: 1)preparing the raw materials; 2)adding 200-220 parts of glue 107, 2-6 parts of thixotropic agent in a glue cylinder, vacuum-pumping and stirring for 3-5 minutes; 3)sucking 10-20 parts of cross-linking agent in the glue cylinder after opening a material pumping valve, then closing the material pumping valve; stirring; 4)sucking partial gas phase white carbon black in the glue cylinder by using a membrane pump, stirring; 5)repeatedly operating for 1-4 times on the residual gas phase white carbon black according to step 4); 6)fully mixing 120-130 parts of 330 silicone oil and 0.09-0.15 parts of tin acetate to obtain a mixture; 7)sucking the mixture in the step 2) in the glue cylinder after stirring, then stirring again; keeping degree of vacuum as -0.09--0.1MPa during the stirring process; and 8)filling nitrogen and emptying after stirring in the step 7) to obtain the acidic silicone sealant. The acidic silicone sealant has the advantages of good cementability, strong sealing, difficult skinning and no sagging.

Description

technical field [0001] The invention relates to a chemical product, in particular to an acidic silicone sealant with the characteristics of good adhesion, strong sealing and easy production and a preparation method thereof, belonging to the technical field of silicone sealants. Background technique [0002] At present, the modernization of urban buildings requires more building energy saving, waterproof, heat insulation, and comfort. The sealing of joints is more and more valued by the construction industry. Growth in sealants, technological advancements have prompted the development of acidic silicone sealants. [0003] Acidic silicone sealant is mainly used in the general bonding between glass and other building materials, the bonding of aquariums and goldfish tanks of various specifications, large glass, glass structure engineering of lighting roof technology, non-coated glass curtain wall, Hanging glass structure assembly system and seam sealing of point curtain wall, e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J183/06C09J183/04C09J11/08C09J11/06
Inventor 郝思珍房连顺董晓红管丹
Owner 扬州晨化新材料股份有限公司
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