Construction structural adhesive and preparation method thereof

A building structural adhesive and modification technology, applied in the direction of adhesives, epoxy resin adhesives, carboxyl rubber adhesives, etc., can solve the problem of poor moisture and heat aging resistance of building structural adhesives, difficult to meet the requirements of safety and reliability, short service life, etc. problems, to achieve the effect of increasing rigidity, preventing water vapor from entering, and improving moisture and heat aging resistance

Inactive Publication Date: 2018-01-05
常州聚盛节能工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem mainly solved by the present invention is that the shear strength of the existing building structure glue is low, and it is difficult to meet the requirements of safety and reliability when used for

Method used

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  • Construction structural adhesive and preparation method thereof

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Effect test

example 1

[0020] Take 10g of 2,7-dihydroxynaphthalene and 100mL of ethanol solution with a mass fraction of 75% into a three-necked flask equipped with a thermometer and a reflux device, move the three-necked flask into a water bath, control the temperature of the water bath at 65°C, and then pour the three-necked flask into the three-necked flask Add 10g of epichlorohydrin and 30mL of 5% sodium hydroxide solution, and stir for 2 hours to react. After the reaction is over, the product is obtained. The product is moved into a still, and distilled at 80°C. The ethanol solution is recovered to obtain the modified ring Take 8g of 3,3-dichloro-4,4-diaminodiphenylmethane and 100mL of acetone and add them to a three-necked flask with a thermometer and a reflux device, move the three-necked flask into a water bath, and control the temperature of the water bath to After stirring and dissolving at 80°C for 3 minutes, add 1g of sodium amide and 15g of isostearyl alcohol into the three-necked flask,...

example 2

[0022]Take 15g of 2,7-dihydroxynaphthalene and 150mL of ethanol solution with a mass fraction of 75% and add it to a three-necked flask equipped with a thermometer and a reflux device, move the three-necked flask into a water bath, control the temperature of the water bath to 70°C, and then pour it into the three-necked flask Add 13g of epichlorohydrin and 35mL of 5% sodium hydroxide solution, and stir for 2 hours to react. After the reaction is over, the product is obtained. The product is moved into a still, and distilled at 85°C. The ethanol solution is recovered to obtain the modified ring oxygen resin, then take 10g of 3,3-dichloro-4,4-diaminodiphenylmethane and 150mL of acetone into a three-necked flask with a thermometer and a reflux device, move the three-necked flask into a water bath, and control the temperature of the water bath to After stirring and dissolving for 4 minutes at 85°C, add 2g of sodium amide and 18g of isostearyl alcohol into the three-necked flask, an...

example 3

[0024] Take 20g of 2,7-dihydroxynaphthalene and 200mL of 75% ethanol solution into a three-necked flask with a thermometer and a reflux device, move the three-necked flask into a water bath, control the temperature of the water bath to 75°C, and then pour the three-necked flask into the three-necked flask Add 15g of epichlorohydrin and 40mL of 5% sodium hydroxide solution, and stir for 3 hours to react. After the reaction is over, the product is obtained, and the product is moved into a still, and distilled at 90°C, and the ethanol solution is recovered to obtain the modified ring oxygen resin, then take 12g of 3,3-dichloro-4,4-diaminodiphenylmethane and 200mL of acetone and add them to a three-necked flask with a thermometer and a reflux device, move the three-necked flask into a water bath, and control the temperature of the water bath to After stirring and dissolving at 90°C for 5 minutes, add 3g of sodium amide and 20g of isostearyl alcohol into the three-necked flask, and ...

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Abstract

The invention discloses a construction structural adhesive and a preparation method thereof, and belongs to the technical field of construction adhesive preparation. The preparation method comprises the following steps: mixing 2,7-dihydroxynaphthalene and an ethanol solution and then adding chloropropylene oxide and a sodium hydroxide solution to carry out a reaction to obtain a product, distilling the product to obtain modified epoxy resin, stirring and dissolving 3,3-dichloro-4,4-diaminodiphenyl-methane and acetone and reacting with sodium amide and isooctadecyl alcohol to obtain modified aromatic amine, mixing and grinding silicon dioxide and montmorillonite and sealing and fermenting with biogas slurry, centrifuging a fermentation product, sterilizing, stirring with a dopamine solutionand filtering to obtain filter residue, drying and reacting with modified epoxy resin, carboxyl-terminated butadiene acrylonitrile rubber, etc., adding modified aromatic amine and reacting, and cooling to room temperature so as to obtain the construction structural adhesive. The construction structural adhesive of the invention has good wet and heat ageing resistance and high tensile shear strength, and has a good bonding and reinforcing effect on building components after being used.

Description

technical field [0001] The invention discloses a construction structural adhesive and a preparation method thereof, belonging to the technical field of construction adhesive preparation. Background technique [0002] Adhesives for building structures are a new class of chemical materials, which are high-strength adhesives used to bond various components that bear large loads. At present, it has been widely used in various projects, such as roads, bridges, reservoirs and even mountain cracks, as well as many buildings for reinforcement, reinforcement and structural transformation. [0003] At present, the chemical composition of existing building structure adhesives is generally based on epoxy resin. Epoxy resin adhesive is a reactive adhesive that can form a three-dimensional chemical cross-linked structure when cured, and has the advantages of strong adhesion and high strength. However, the single epoxy resin has high brittleness, low elongation and easy cracking after cur...

Claims

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Application Information

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IPC IPC(8): C09J163/00C09J113/00C09J11/06C09J11/04C08G59/06C08G59/50
Inventor 陈建乐宋玲潘宏梅
Owner 常州聚盛节能工程有限公司
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