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High-viscosity high-temperature-resistant steel bar embedding adhesive

A technology of high temperature resistance and rebar-planting glue, applied in the directions of polymer adhesive additives, non-polymer adhesive additives, adhesives, etc., can solve the problems of low bonding strength, poor high temperature resistance, etc., and achieve low volume expansion. coefficient, good film-forming effect, good anti-aging properties

Pending Publication Date: 2020-08-07
杜卫强
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a kind of high-viscosity and high-temperature resistant planting glue for the problems of poor high temperature resistance and low bonding strength in the commonly used planting glue

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0032] The preparation method of composite colloid base material, comprises the steps:

[0033](1) Mix nano-alumina, silane coupling agent KH-550, and xylene at 35~50°C in a weight ratio of 3:0.01:40~60, stir magnetically at 500~800r / min for 40~60min, and heat up to 90~100°C, keep warm for 2~4h, filter with suction, collect the filter residue and dry it in an oven for 3~5h to obtain a dry product. Under a nitrogen atmosphere, take the dry product and add reagents to mix at a weight ratio of 1:16~25 to obtain a mixture. Add 3,5-diaminobenzoic acid, pyridine, and triphenyl phosphite to the mixture at a weight ratio of 12~18:1:3~6:2, mix at 90~100°C for 1~3 hours, and depressurize Evaporate to constant weight to obtain a concentrate;

[0034] (2) At 30~45°C, mix epoxy resin, concentrate and auxiliary materials according to the weight ratio of 20~40:7:1, stir with 400~700r / min magnetic force for 35~60min, and heat up to 60~75°C to obtain Base material, take the base material acc...

Embodiment 1

[0038] Auxiliary material: Mix dodecyl dimethyl betaine and white oil at a weight ratio of 1:2 to obtain an auxiliary material.

[0039] Reagent: Mix N-methylpyrrolidone and xylene at a weight ratio of 8:5 to obtain a reagent.

[0040] Pretreatment of wood pulp: according to the weight ratio of 1:6, take the mandshurica ash and the zinc chloride solution with a mass fraction of 45% and mix evenly to obtain a mixed solution. Take the mixed solution and heat it at 70°C for 30 minutes to obtain Treatment solution: Take the treatment solution and add N,N'-dimethylformamide and mercaptoacetic acid in a weight ratio of 12:3:4, mix and stir for 40 minutes to obtain pretreated wood pulp.

[0041] Modifier: Mix glycidyl methacrylate and vinyl tert-carbonate at a weight ratio of 1:2 to obtain a modifier.

[0042] Additive: Take triphenylchlorosilane and add acetone in a mass ratio of 1:6 to mix, adjust the pH to 7.5 with 12% sodium hydroxide solution, let it stand at room temperature f...

Embodiment 2

[0051] Auxiliary material: Mix dodecyl dimethyl betaine and white oil at a weight ratio of 1:4 to obtain an auxiliary material.

[0052] Reagent: Mix N-methylpyrrolidone and xylene at a weight ratio of 10:5 to obtain the reagent.

[0053] Pretreatment of wood pulp: according to the weight ratio of 1:8, take the mandshurica ash and the zinc chloride solution with a mass fraction of 45% and mix evenly to obtain a mixed solution. Take the mixed solution and heat it at 75°C for 42 minutes to obtain Treatment solution: Take the treatment solution and add N,N'-dimethylformamide and mercaptoacetic acid in a weight ratio of 18:5:4, mix and stir for 50 minutes to obtain pretreated wood pulp.

[0054] Modifier: Mix glycidyl methacrylate and vinyl tertiary carbonate at a weight ratio of 1:3 to obtain a modifier.

[0055] Additive: Take triphenylchlorosilane and add acetone in a mass ratio of 1:8 to mix, adjust the pH to 7.7 with 12% sodium hydroxide solution, let it stand at room temper...

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Abstract

The invention discloses a high-viscosity high-temperature-resistant steel bar embedding adhesive, and belongs to the technical field of chemical raw material preparation. The adhesive is formed by soaking refined fraxinus mandshurica in a zinc chloride solution and stirring, and carrying out sulfhydrylation modification; the hydrogen-bond interaction in the components of the modified wood pulp isconveniently improved; the bonding area between the fibers and between the fibers and the organic resin is increased, thus increasing density, and improving the bonding effect stably; glycerol ester substances are used for toughening and modifying phenolic epoxy acrylate resin components, thus improving flexibility of resin components, reducing the viscosity to a certain extent, and improving thestability of the prepared steel bar embedding adhesive; the confusion degree of a cured product is enhanced by modifying resin components, the thermodynamic entropy of the cured product is increased,the crystallinity of the cured product is reduced, and the application effect of the steel bar embedding adhesive is improved on the basis that the cured product meets the mechanical property of the steel bar embedding adhesive. The invention solves the problems of poor high-temperature resistance and low bonding strength of the current common steel bar embedding adhesive.

Description

technical field [0001] The invention belongs to the technical field of chemical raw material preparation, and in particular relates to a high-viscosity and high-temperature-resistant rebar-planting glue. Background technique [0002] The planting glue has high bonding strength, like pre-embedding, curing at room temperature, small shrinkage during hardening, good temperature resistance, can be welded after embedding, good durability, weather resistance, aging resistance, medium resistance (acid, alkali, Water) has good performance, excellent toughness and impact resistance after curing, does not contain volatile solvents, is non-toxic and environmentally friendly, has the characteristics of wide glue distribution ratio between A and B components, and convenient construction. [0003] Rebar planting technology is to use bonding and anchoring materials to make the newly added steel bars and concrete bond firmly on the existing concrete structures or components according to the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J163/00C09J163/10C09J11/08C09J11/04C09J11/06
CPCC08K2003/2227C08K2201/011C08K2201/014C08L2201/08C08L2205/02C08L2205/035C09J11/04C09J11/06C09J11/08C09J163/00C08L97/02C08L63/10C08L69/00C08L91/06C08L1/284C08L23/06C08K13/06C08K9/06C08K9/04C08K3/22C08K3/36C08K5/098
Inventor 杜卫强
Owner 杜卫强
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