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High-adhesion silane-modified polyether sealant for prefabricated building and preparation method of sealant

A technology for silane-modified polyether and construction, applied in polyether adhesives, non-polymer adhesive additives, adhesives, etc., can solve problems such as high bonding strength and fracture, and achieve simple and convenient preparation process The effect of using and solving the problem of fracture

Active Publication Date: 2019-09-20
山西省建筑科学研究院有限公司
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  • Summary
  • 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-adhesion silane-modified polyether sealant for prefabricated building and preparation method of sealant
  • High-adhesion silane-modified polyether sealant for prefabricated building and preparation method of sealant
  • High-adhesion silane-modified polyether sealant for prefabricated building and preparation method of sealant

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preparation example Construction

[0065] The present invention also provides the above-mentioned preparation method of the modified polyether sealant for prefabricated buildings with high adhesiveness, which is characterized by comprising the following steps:

[0066] Component A and Component B are prepared, and the order of preparing Component A and Component B is not limited;

[0067] The preparation method of component A is as follows: adding nano-calcium carbonate, heavy calcium carbonate and amino-terminated polyether to the reaction kettle, blending for 1-2 hours under vacuum conditions, and then adding silane-modified polyether polymer, bicarbonate Joint agent I, vinyltrimethoxysilane, thixotropic agent and anti-aging agent are blended under vacuum conditions for 0.5 to 1 hour to obtain component A;

[0068] The preparation method of component B is as follows: adding epoxy resin, flexible diluent, coupling agent II, and catalyst into the reaction kettle, and blending for 1-2 hours under vacuum conditio...

Embodiment 1

[0072] 5 parts of amino-terminated polyether T-3000, 20 parts of nano calcium carbonate, and 30 parts of heavy calcium carbonate were dehydrated and blended for 1 hour in a vacuum state, and then 50 parts of silane-modified polyether polymer 201S, 3 parts of Gamma-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, in vacuum Dewatering and blending for 0.5 hours to obtain component A of the 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 are blended for 1 hour under vacuum protection to obtain component B of the weather-resistant sealant for prefabricated concrete joints. The A component and the B component are mixed for 15 minutes...

Embodiment 2

[0074] 5 parts of amino-terminated polyether D-2000, 20 parts of nano-calcium carbonate, and 10 parts of heavy calcium carbonate were dehydrated and blended for 2 hours in a vacuum state, and then 40 parts of silane-modified polyether polymer 201S, 3 parts of Gamma-aminopropyltriethoxysilane, 4 parts polyamide wax, 0.5 part amine light stabilizer RIASORB UV-770 and 0.5 part phenolic antioxidant RIANOX 245 and 1 part vinyltriethoxysilane 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-ring A mixture of oxycyclohexyl)ethyltriethoxysilane, 1 part of an organic titanium compound and 1 part of DMP-30 was blended for 1 hour under vacuum protection to obtain component B of a weather-resistant sealant for prefabricated concrete joints. The A component and the B component are mixed...

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Abstract

The invention discloses a high-adhesion silane-modified polyether sealant for a prefabricated building and a preparation method of the sealant. The method comprises the following steps: adding nano calcium carbonate, heavy calcium carbonate and amino-terminated polyether into a reaction kettle, blending for 1-2 hours in a vacuum condition, then adding a silane-modified polyether polymer, a coupling agent I, a thixotropic agent, an antiaging agent and a water-removing agent, and blending for 0.5-1 hour in the vacuum condition to obtain an ingredient A; adding epoxy resin, a flexible diluent, a coupling agent II and a catalyst into the reaction kettle, and blending for 1-2 hours in the vacuum condition to obtain a modified polyether sealant ingredient B for a base coat-free prefabricated building; and the ingredient A and the ingredient B are mixed in proportion to obtain the sealant.

Description

technical field [0001] The invention relates to a high-adhesion silane-modified polyether sealant for prefabricated buildings and a preparation method thereof, and belongs to the field of prefabricated building sealants. Background technique [0002] With the country's strong support for prefabricated buildings, prefabricated buildings have shown a rapid development trend 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. One of the reasons is that the structural strength of prefabricated buildings at that time could not be guaranteed; the other was t...

Claims

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Application Information

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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有限公司
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