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Hyperbranched epoxy oligosiloxane sand-fixing material as well as preparation method and application thereof

A technology of oligosiloxane and propyltrimethoxysilane, which is applied in the field of hyperbranched epoxy oligosiloxane sand-fixing materials and its preparation, to achieve the effect of not easy to decrease the overall strength, uniform mechanical strength and high mechanical strength

Active Publication Date: 2021-12-31
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems of existing chemical sand-fixing materials such as mechanical properties, weather resistance, and environmental protection, the primary purpose of the present invention is to provide a hyperbranched epoxy oligosiloxane sand-fixing material

Method used

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  • Hyperbranched epoxy oligosiloxane sand-fixing material as well as preparation method and application thereof
  • Hyperbranched epoxy oligosiloxane sand-fixing material as well as preparation method and application thereof
  • Hyperbranched epoxy oligosiloxane sand-fixing material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045]Add 77 parts of tetramethyl silicate, 23 parts of γ-glycidyl etheroxypropyl trimethoxysilane, 10 parts of absolute ethanol, 5 parts of deionized water, and 1 part of concentrated hydrochloric acid (mass fraction 36-38%) Heating and stirring at 50°C in the reaction kettle for 6 hours, and distilling off hydrochloric acid, ethanol and water in the system under reduced pressure at 80°C to obtain hyperbranched epoxy oligosiloxane. 78 parts by weight of hyperbranched epoxy oligosiloxane, 20 parts of neopentyl glycol diglycidyl ether reactive diluent, 1 part of γ-glycidyl ether oxypropyltrimethoxysilane, 1 part of polyamide wax Mix evenly to obtain component A; 80 parts by weight of diethylenetriamine, 2 parts of phenalkamine T31, 10 parts by weight of 1-methylimidazole, 8 parts by weight of 2,4,6-tris(dimethylaminomethyl Base) phenol is mixed evenly to obtain B component. When in use, stir and mix components A and B at a weight ratio of 100:10 to obtain a hyperbranched epoxy...

Embodiment 2

[0047] 34 parts of methyltrimethoxysilane, 33 parts of diphenyldimethoxysilane, 33 parts of γ-glycidyl etheroxypropyl trimethoxysilane, 30 parts of absolute ethanol, 5 parts of deionized water, 1.5 Parts of concentrated hydrochloric acid (mass fraction 36-38%) were added to the reaction kettle and heated and stirred at 60°C for 6 hours, and hydrochloric acid, ethanol and water in the system were removed by distillation under reduced pressure at 80°C to obtain hyperbranched epoxy oligosiloxane. Mix 60 parts by weight of hyperbranched epoxy oligosiloxane, 38 parts of butyl glycidyl ether reactive diluent, 1 part of γ-methacryloxypropyl trimethoxysilane, and 1 part of polyamide wax Obtain component A uniformly; mix 80 parts by weight of diethylenetriamine, 10 parts by weight of phenalkamine T31, and 10 parts by weight of 1-methylimidazole to obtain component B. When in use, stir and mix components A and B at a weight ratio of 100:15 to obtain a hyperbranched epoxy oligosiloxane s...

Embodiment 3

[0049] 20 parts by weight of methyltrimethoxysilane, 40 parts of diphenyldimethoxysilane, 40 parts of γ-glycidyl etheroxypropyl trimethoxysilane, 20 parts of absolute ethanol, 5 parts of deionized water, Add 1.5 parts of concentrated hydrochloric acid (mass fraction 36-38%) into the reaction kettle, heat and stir at 80°C for 8 hours, and distill under reduced pressure at 70°C to remove hydrochloric acid, ethanol and water in the system to obtain hyperbranched epoxy oligosiloxane. Mix 70 parts by weight of hyperbranched epoxy oligosiloxane, 28 parts of 1,4-butanediol diglycidyl ether, 1 part of γ-glycidyl ether oxypropyltrimethoxysilane, and 1 part of polyamide wax Obtain component A uniformly; 80 parts by weight of 4,4'-diaminodiphenylmethane, 2 parts of polyamide 651, 10 parts of 2-methyl-4-ethylimidazole, 8 parts by weight of triethylamine Mix well to obtain B component. When in use, stir and mix components A and B at a weight ratio of 100:20 to obtain a hyperbranched epoxy...

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Abstract

The invention discloses a hyperbranched epoxy oligosiloxane sand-fixing material as well as a preparation method and application thereof. The chemical sand stabilization material is composed of a component A and a component B. The component A is prepared from the following components in parts by weight: 50 to 80 parts of hyperbranched epoxy oligosiloxane, 15 to 50 parts of reactive diluent and 2 to 20 parts of additive. The component B comprises the following components in parts by weight: 80-90 parts of an amine curing agent, 2-20 parts of a hydrophobic curing agent and 2-20 parts of an accelerant. The chemical sand stabilization material has the characteristics of low viscosity, high wettability and reactivity, can consolidate various sands in situ without selection, and has the characteristics of local material utilization, small amount, high efficiency, convenience in construction and emergency repair and construction. The material can be applied to deep reinforcement of landforms such as island construction, coastal mud flat and desert gobi, lays a foundation for construction of infrastructures such as roads, bridges and buildings, and realizes effective utilization of sandy soft foundations.

Description

technical field [0001] The invention belongs to the technical field of chemical sand fixation, in particular to a hyperbranched epoxy oligosiloxane sand fixation material and its preparation method and application. Background technique [0002] Chemical sand fixation is a kind of desertification prevention and control technology. Generally, chemical sand fixation materials are sprayed on the sand layer. The material penetrates into the sand to moisten and coat the sand. As the chemical reaction proceeds, the material changes from liquid to solid, and the loose sand condenses. It becomes a consolidated body with a certain strength, which can withstand a certain external force and maintain its original shape. Chemical sand fixation can be divided into two broad categories: inorganic and organic. Commonly used inorganic materials include cement and water glass, and organic sand-fixing materials include petroleum asphalt materials and polymer materials. In terms of inorganic s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/38C09K17/40C08G77/04C08G77/06C09K105/00
CPCC09K17/38C09K17/40C08G77/04C08G77/06C09K2105/00
Inventor 马春风张国梁郑浩张彬刘珂张广照
Owner SOUTH CHINA UNIV OF TECH
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