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High-adhesive silane-modified polyether sealant for prefabricated buildings and preparation method thereof

A technology for silane-modified polyether and construction, applied in polyether adhesives, non-polymer adhesive additives, adhesives, etc., can solve the problems of fracture and high bonding strength, and achieve easy use and simple preparation process , cost-saving effect

Active Publication Date: 2022-01-04
山西省建筑科学研究院集团有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to provide a high-adhesive silane-modified polyether sealant for prefabricated buildings and its preparation method, which has high bonding strength and can solve the problem of fracture caused by stress

Method used

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  • High-adhesive silane-modified polyether sealant for prefabricated buildings and preparation method thereof
  • High-adhesive silane-modified polyether sealant for prefabricated buildings and preparation method thereof
  • High-adhesive silane-modified polyether sealant for prefabricated buildings and preparation method thereof

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preparation example Construction

[0065] The present invention also provides a method for preparing the above-mentioned modified polyether sealant for prefabricated buildings with high adhesiveness, which is characterized in that it comprises the following steps:

[0066] Prepare component A and component B, and the sequence of preparing component A and component B is not limited;

[0067] The preparation method of component A is: add nano-calcium carbonate, heavy calcium carbonate, and amino-terminated polyether into the reaction kettle, blend for 1 to 2 hours under vacuum conditions, and then add silane-modified polyether polymer, Combined agent I, vinyltrimethoxysilane, thixotropic agent and anti-aging agent, blended under vacuum for 0.5~1 hour to obtain component A;

[0068] The preparation method of component B is: add epoxy resin, flexible diluent, coupling agent II, and catalyst into the reaction kettle, and blend under vacuum conditions for 1 to 2 hours to obtain a modified primer-free prefabricated bu...

Embodiment 1

[0072] Dehydrate and blend 5 parts of amino-terminated polyether T-3000, 20 parts of nano-calcium carbonate, and 30 parts of heavy calcium carbonate in a vacuum state for 1 hour, then add 50 parts of silane-modified polyether polymer 201S, 3 parts γ-Aminopropyltrimethoxysilane, 5 parts hydrogenated castor oil, 1 part amine light stabilizer RIASORB UV-770 and 1 part phenolic antioxidant RIANOX 245 and 1 part vinyltrimethoxysilane mixture, vacuum Dehydration and blending at lower temperature for 0.5 hours, to obtain component A of weather-resistant sealant for prefabricated concrete joints; 15 parts of epoxy resin E-44SMF6101, 5 parts of polyethylene glycol diglycidyl ether, 3 parts of 3-(2,3 -Glycidoxy)propyltrimethoxysilane, 2 parts of chelated tin and 1 part of DMP-30 mixed catalyst were blended under vacuum protection for 1 hour to obtain component B of weather-resistant sealant for prefabricated concrete joints. Mix A component and B component according to the mass ratio of...

Embodiment 2

[0074] Dehydrate and blend 5 parts of amino-terminated polyether D-2000, 20 parts of nano-calcium carbonate, and 10 parts of heavy calcium carbonate in a vacuum state for 2 hours, then add 40 parts of silane-modified polyether polymer 201S, 3 parts γ-Aminopropyltriethoxysilane, 4 parts of polyamide wax, 0.5 part of amine light stabilizer RIASORB UV-770 and 0.5 part of phenolic antioxidant RIANOX 245 and 1 part of vinyl triethoxysilane mixture, Dehydration and blending in a vacuum state for 0.7 hours to obtain component A of the weather-resistant sealant for prefabricated concrete joints; 10 parts of epoxy resin SMF170, 2 parts of polypropylene glycol diglycidyl ether, 2 parts of 2-(3,4- Oxycyclohexyl)ethyltriethoxysilane, 1 part of organic titanium compound and 1 part of DMP-30 mixture were blended for 1 hour under vacuum protection to obtain component B of weather-resistant sealant for prefabricated concrete joints. Mix A component and B component according to the mass ratio ...

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Abstract

The invention discloses a highly adhesive silane-modified polyether sealant for assembled buildings and a preparation method thereof. The method includes the following steps: adding nano-calcium carbonate, heavy calcium carbonate, and amino-terminated polyether into the reaction kettle, blending under vacuum conditions for 1 to 2 hours, and then adding silane-modified polyether polymer, coupling agent I, Thixotropic agent, anti-aging agent and water remover, blended under vacuum conditions for 0.5 to 1 hour to obtain component A; add epoxy resin, flexible diluent, coupling agent II, catalyst to the reaction kettle, Blending at low temperature for 1 to 2 hours to obtain component B of the modified polyether sealant for prefabricated buildings without primer; mixing component A and component B in proportion to obtain the sealant.

Description

technical field [0001] The invention relates to a highly adhesive silane-modified polyether sealant for assembled buildings and a preparation method thereof, belonging to the field of assembled building sealants. Background technique [0002] With the country's strong support for prefabricated buildings, prefabricated buildings have shown rapid development in recent years. As a key supporting material for prefabricated buildings, prefabricated building sealants have attracted more and more attention and attention. The prefabricated building is a building assembled on the site with prefabricated components. There are joints between the prefabricated components, which need to be sealed with sealant. From the 1950s to the 1980s, prefabricated buildings were all the rage in our country; but after the 1980s, they almost disappeared. The reason is that the structural strength of the prefabricated buildings at that time could not be guaranteed; the other is the lack of suitable e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J171/00C09J163/00C09J11/04
CPCC09J171/00C09J11/04C08L2205/035C08L2205/025C08L2201/08C08K2201/014C08K2003/265C08K2201/011C08L63/00C08L71/00C08K13/02C08K3/26
Inventor 李绩阎磊李丽霞裴峻军徐坤王静田艳鹏薛文祥
Owner 山西省建筑科学研究院集团有限公司
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