CN110903795A - High-toughness epoxy resin grouting material for quickly repairing concrete structure joint - Google Patents
High-toughness epoxy resin grouting material for quickly repairing concrete structure joint Download PDFInfo
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- CN110903795A CN110903795A CN201911210348.2A CN201911210348A CN110903795A CN 110903795 A CN110903795 A CN 110903795A CN 201911210348 A CN201911210348 A CN 201911210348A CN 110903795 A CN110903795 A CN 110903795A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/50—Amines
- C08G59/5006—Amines aliphatic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/50—Amines
- C08G59/5026—Amines cycloaliphatic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/50—Amines
- C08G59/56—Amines together with other curing agents
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/66—Mercaptans
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Health & Medical Sciences (AREA)
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Abstract
A high-toughness epoxy resin grouting material for quickly repairing concrete structure joints is composed of A, B parts of raw materials: the component A comprises glycidyl ether epoxy resin, flexibility-increasing modified epoxy resin, epoxy-terminated liquid nitrile rubber and reactive diluent; the component B comprises a modified amine curing agent, polythiol, a tertiary amine accelerator, amino-terminated liquid nitrile rubber, an organic silicon defoamer and an anti-aging agent, and the mass ratio of the A, B component is 1: 0.2-1. The epoxy resin grouting material has low viscosity, is convenient for grouting construction, has good applicability to a damp base surface, high hardening speed, high early mechanical strength and bonding strength, excellent flexibility, excellent resistance to wet heat aging and fatigue, and can quickly repair, reinforce and reinforce the joint of a concrete structure under the condition of not influencing normal traffic.
Description
Technical Field
The invention belongs to the field of building materials, and particularly relates to a high-toughness epoxy resin grouting material for quickly repairing a concrete structure joint.
Background
The plate girder has the advantages of simple structure, quick installation, low cost and the like, so the plate girder is widely applied to bridges with small span in China. For a simply supported hinged plate girder structure, a hinge joint is a medium for realizing transverse connection between plate girders, once the hinge joint is damaged, the transverse distribution and the integral stress performance of a bridge are seriously influenced, so that the deflection of the plate girders is overlarge, the plate bottom is cracked, and the pavement of a bridge deck is damaged; in addition, rainwater seeps downwards to cause damages such as steel bar corrosion, concrete corrosion, strength reduction and the like in the plate girder, and serious hidden danger is formed to driving safety. In addition, the condition of single plate stress caused by hinge joint damage is common in the plate girder bridge, and the plate girders on two sides obviously stagger up and down when the hinge joint damages the bridge seriously. When the heavy vehicle passes repeatedly, the damage of hinge joints is accelerated, the integral bearing capacity and the durability of the bridge are reduced, and hidden dangers are left for driving safety.
Limited by the plate girder hinge joint structure, the hinge joint damage surface is small, the interior is difficult to observe, and the development has discreteness. The common plate beam hinge joint repairing technology is complex in construction process, some of the common plate beam hinge joint repairing technologies need to interrupt traffic for a long time, some of the common plate beam hinge joint repairing technologies only have the function of indirectly improving the traffic, and when the hinge joint damage degree is large, the effect is relatively limited. How to repair hinge joint damage quickly and efficiently becomes a common problem in the current road management department.
The epoxy resin has strong cohesive force, compact molecular structure and higher mechanical property than the general thermosetting resins such as phenolic resin, unsaturated polyester and the like. The epoxy resin curing system contains epoxy groups, hydroxyl groups, ether bonds, amine bonds, ester bonds and other polar groups with extremely high activity, so that the epoxy resin curing system endows the epoxy resin curing material with excellent adhesion to polar substrates such as metal, ceramic, glass, concrete, wood and the like. The epoxy resin has small curing shrinkage, generally 1-2%, and is one of the least curing shrinkage varieties of thermosetting resins (8-10% of phenolic resin, 4-6% of unsaturated polyester resin, and 4-8% of organic silicon resin). The coefficient of linear expansion is also very small, typically 6X 10-5/deg.C. The epoxy cured product has excellent chemical stability. The performance of the coating is better than that of thermosetting resins such as unsaturated polyester resin, phenolic resin and the like in resisting corrosion of various media such as alkali, acid, salt and the like. However, epoxy resins have poor ultraviolet aging resistance and are easily degraded and broken after being irradiated by sunlight. The epoxy resin has high conformity with the working condition environment and performance requirements of the hinge joint of the plate beam, and is suitable for being used as a repairing material for the hinge joint of the plate beam.
At present, the research on the epoxy resin for repairing the hinge joint of the bridge is less. Chinese patent CN103555245A discloses an epoxy adhesive for repairing and reinforcing hinge joint and application thereof, which realizes the aim of coexistence of long service life and extremely short curing period of the epoxy adhesive through coordination of stepwise polymerization and addition polymerization. However, the extremely short curing period is realized by promoting the addition polymerization reaction after gradually polymerizing and accumulating heat, the quick reactivity of the epoxy adhesive of the system is obviously influenced by the temperature, and when the temperature is lower and the gradual polymerization speed is slowed down, the hardening time of the material can be greatly prolonged, so that the requirement of continuously repairing the hinge joint of the reinforcing plate beam is difficult to meet. In addition, the epoxy adhesive is toughened only by introducing the liquid nitrile rubber, the toughening effect is limited, the liquid nitrile rubber has high viscosity and is not suitable to be doped too much, and the problem of degumming of the material is easy to occur under the action of long-term complex fatigue load. Meanwhile, the viscosity reduction measure adopts an inactive diluent, so that the problems of precipitation and the like are easy to occur under the long-term action of load, and the performance of the material is influenced. In addition, the thixotropy reduces the fluidity of the polyurethane adhesive, when the hinge joint is filled with glue, the material filled in the front part gathers, thixotropy and flow become slow, the reaction speed gradually rises rapidly, the material is hardened in a very short time, so that a flow channel in the joint is blocked and cannot be filled fully, and the condition is more obvious particularly when the temperature is higher in summer.
Therefore, there is a need for an epoxy resin for rapidly repairing concrete structure joints, which has the characteristics of rapid hardening, high toughness and high durability in a wide temperature range on the basis of maintaining high mechanical strength and bonding strength, so as to meet the requirements of performing perfusion repair reinforcement on concrete structure joints under the condition of not interrupting traffic and maintaining a good working state for a long time under the comprehensive influence of fatigue load and environment.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to overcome the defects of the prior art and provides a high-toughness epoxy resin grouting material for quickly repairing a concrete structure joint.
The technical scheme is as follows: in order to achieve the aim, the invention provides a high-toughness epoxy resin grouting material for quickly repairing a joint of a concrete structure, which consists of A, B parts, wherein the A part consists of the following raw materials in parts by mass: 40-80 parts of glycidyl ether epoxy resin, 10-30 parts of glycidyl ester epoxy resin, 10-70 parts of flexibility-increasing modified epoxy resin, 10-30 parts of epoxy-terminated liquid nitrile rubber and 10-40 parts of reactive diluent; the part B consists of the following raw materials in parts by weight: 20-120 parts of modified amine curing agent, 5-15 parts of polythiol, 1-5 parts of tertiary amine accelerator, 5-25 parts of amino-terminated liquid nitrile rubber, 5-15 parts of organosilicon defoamer and 5-15 parts of anti-aging agent; A. the volume ratio of the two parts B is 1: 0.4-1.
The glycidyl ether epoxy resin is one or more of bisphenol A epoxy resin, hydrogenated bisphenol A epoxy resin, bisphenol F epoxy resin and aliphatic glycidyl ether epoxy resin.
The glycidyl ester epoxy resin is one or more of adipic acid diglycidyl ester, phthalic acid diglycidyl ester and terephthalic acid diglycidyl ester.
The flexibility-increasing modified epoxy resin is one or more of polyurethane modified epoxy resin, organic silicon modified epoxy resin and nitrile rubber modified epoxy resin.
The reactive diluent is aliphatic glycidyl ether.
The modified amine curing agent is one or more of IPDA (isophorone diisocyanate), glycidyl ether, epichlorohydrin, phenolic aldehyde modified alicyclic amine and aliphatic amine with the viscosity of less than 900mPa & s at 25 ℃; the anti-aging agent is one or more of a sterilization mildew inhibitor, an antioxidant and a hydrolysis stabilizer.
The anti-aging agent is one or more of a mildew inhibitor, an antioxidant and a heat stabilizer.
The epoxy resin grouting material can work for more than or equal to 20min at normal temperature, the hardening time is less than or equal to 30min, the elongation at break is more than or equal to 15%, the compressive strength is more than or equal to 60MPa, and the bonding strength of a damp base surface is more than or equal to 3.0 MPa.
The working mechanism is as follows: on the basis of not obviously affecting the mechanical property and the heat resistance, the epoxy resin grouting material introduces a large amount of bisphenol F epoxy resin and aliphatic glycidyl ether epoxy resin, greatly reduces the viscosity of a main agent, reduces the adverse effect of a diluent on the performance, and has good flexibility because the aliphatic glycidyl ether epoxy resin does not contain benzene rings; the low-viscosity glycidyl ester epoxy resin is introduced in a proper amount, so that the reactivity, the bonding strength, the shear strength, the mechanical strength and the low-temperature resistance of the material can be effectively improved on the basis of not obviously influencing the water resistance of the epoxy resin; introducing flexibility-increasing modified epoxy resin, and improving the flexibility of the material by grafting flexible chain segments such as polyurethane, organic silicon, nitrile rubber and the like; introducing epoxy-terminated liquid nitrile rubber and amino-terminated liquid nitrile rubber to perform auxiliary toughening on the material; the reactive diluent which can participate in the reaction is introduced, so that the viscosity is effectively reduced, the adverse effect is reduced to the minimum, the problems of diluent precipitation and the like are avoided, and the long-term stability of the material performance is ensured; alicyclic amine and aliphatic amine are modified and compounded by means of IPDA, glycidyl ether, epichlorohydrin, phenolic aldehyde and the like, so that a curing system with high activity, high strength, high elongation at break and high moisture resistance is formed; a polythiol and tertiary amine accelerator composite system is introduced, the hardening speed of the epoxy resin can be reasonably adjusted according to different temperatures, and the temperature application range is greatly improved; the mildew preventive, the antioxidant and the heat stabilizer are added to enhance the heat aging resistance, the heat aging resistance and the mildew pollution resistance of the epoxy resin, and the durability of the material is improved.
Has the advantages that: through a large number of experimental researches, the high-toughness epoxy resin grouting material for quickly repairing the joint of the concrete structure has scientific and reasonable component proportion, and the composition has the following excellent properties:
(1) excellent filling performance: the epoxy resin grouting material has low viscosity and long working time, and can ensure full filling of the slab-girder hinge joint.
(2) The early strength is high and the traffic construction can not be interrupted: the epoxy resin grouting material has high hardening speed, the tensile strength of 2h, 4h and 1d is respectively more than or equal to 5MPa, more than or equal to 10MPa and more than or equal to 30MPa, the compressive strength of 2h, 4h and 1d is respectively more than or equal to 10MPa, more than or equal to 15MPa and 60MPa, the bonding strength of 2h, 4h and 1d is respectively more than or equal to 0.5MPa, more than or equal to 1.5MPa and more than or equal to 4.0MPa, and the elongation at break of 2h, 4h and 1d is respectively more than or equal to 35 percent, more than or equal to 30 percent and more than or equal to.
(3) High mechanical strength and good flexibility: under the conditions that the compressive strength is not less than 60MPa, the tensile strength is not less than 35MPa and the bending strength is not less than 40MPa, the material has excellent flexibility, the elongation at break is not less than 15 percent, and the material and a concrete bonding structure have good fatigue resistance.
(4) High wet bond strength: the epoxy resin grouting material is tightly bonded with a wet interface of concrete, the bonding strength of the epoxy resin grouting material is more than or equal to 3.5MPa under the condition that the saturated surface of the concrete is dry, and the bonding strength of the epoxy resin grouting material is more than or equal to 3.0MPa under the condition that the surface of the concrete is wet.
(5) The stability is good: the curing shrinkage rate of the epoxy resin grouting material is less than or equal to 0.15 percent, and the problems of cracking of the material or separation from a concrete bonding surface caused by too high curing speed and too large shrinkage, solvent precipitation and the like and influence on later-period performance are avoided. Meanwhile, the material has excellent properties of resistance to heat and humidity aging, heat and aging, mildew resistance, acid and alkali resistance and the like, and the change rate of the tensile strength and the elongation at break of the material is less than or equal to 8 percent after aging treatment.
Detailed Description
The following examples are given to illustrate the present invention and are not intended to limit the scope of the present invention.
Example 1
The component A comprises:
10 parts of bisphenol A epoxy resin, 10 parts of hydrogenated bisphenol A epoxy resin, 10 parts of bisphenol F epoxy resin, 10 parts of aliphatic glycidyl ether, 5 parts of diglycidyl adipate, 2 parts of diglycidyl phthalate, 3 parts of diglycidyl terephthalate, 4 parts of polyurethane modified epoxy resin, 5 parts of organosilicon modified epoxy resin, 1 part of nitrile rubber modified epoxy resin, 10 parts of epoxy-terminated liquid nitrile rubber and 10 parts of aliphatic glycidyl ether; .
The component B comprises:
10 parts of modified alicyclic amine, 10 parts of modified aliphatic amine, 5 parts of polythiol, 1 part of tertiary amine accelerator, 5 parts of amino-terminated liquid nitrile rubber, 5 parts of organic silicon defoamer, 1 part of mildew preventive, 2 parts of antioxidant and 2 parts of heat stabilizer.
A. The volume ratio of the two components B is 1: 0.4.
Example 2
The component A comprises:
20 parts of bisphenol A epoxy resin, 20 parts of hydrogenated bisphenol A epoxy resin, 20 parts of bisphenol F epoxy resin, 20 parts of aliphatic glycidyl ether, 10 parts of diglycidyl adipate, 10 parts of diglycidyl phthalate, 10 parts of diglycidyl terephthalate, 30 parts of polyurethane modified epoxy resin, 30 parts of organosilicon modified epoxy resin, 10 parts of nitrile rubber modified epoxy resin, 30 parts of epoxy-terminated liquid nitrile rubber and 40 parts of aliphatic glycidyl ether; .
The component B comprises:
60 parts of modified alicyclic amine, 60 parts of modified aliphatic amine, 15 parts of polythiol, 5 parts of tertiary amine accelerator, 25 parts of amino-terminated liquid nitrile rubber, 15 parts of organic silicon defoamer, 5 parts of mildew preventive, 5 parts of antioxidant and 5 parts of heat stabilizer.
A. The volume ratio of the two components B is 1: 1.
Example 3
60 parts of bisphenol F epoxy resin, 20 parts of diglycidyl adipate, 40 parts of polyurethane modified epoxy resin, 20 parts of epoxy-terminated liquid nitrile rubber and 25 parts of aliphatic glycidyl ether; .
The component B comprises:
70 parts of modified alicyclic amine, 10 parts of polythiol, 3 parts of tertiary amine accelerator, 15 parts of amino-terminated liquid nitrile rubber, 10 parts of organosilicon defoamer and 10 parts of heat stabilizer.
A. The volume ratio of the two components B is 1: 0.7.
Example 4
The component A comprises:
10 parts of bisphenol A epoxy resin, 10 parts of hydrogenated bisphenol A epoxy resin, 30 parts of bisphenol F epoxy resin, 10 parts of adipic acid diglycidyl ester, 5 parts of phthalic acid diglycidyl ester, 20 parts of polyurethane modified epoxy resin, 5 parts of organosilicon modified epoxy resin, 15 parts of epoxy-terminated liquid nitrile rubber and 17.5 parts of aliphatic glycidyl ether; .
The component B comprises:
25 parts of modified alicyclic amine, 20 parts of modified aliphatic amine, 7.5 parts of polythiol, 2 parts of tertiary amine accelerator, 10 parts of amino-terminated liquid nitrile rubber, 7.5 parts of organic silicon defoamer, 2 parts of mildew preventive, 2 parts of antioxidant and 3.5 parts of heat stabilizer.
A. The volume ratio of the two components B is 1: 0.5.
Example 5
The component A comprises:
10 parts of bisphenol A epoxy resin, 50 parts of bisphenol F epoxy resin, 10 parts of aliphatic glycidyl ether, 20 parts of adipic acid diglycidyl ester, 5 parts of terephthalic acid diglycidyl ester, 50 parts of polyurethane modified epoxy resin, 5 parts of nitrile rubber modified epoxy resin, 25 parts of epoxy-terminated liquid nitrile rubber and 32.5 parts of aliphatic glycidyl ether; .
The component B comprises:
40 parts of modified alicyclic amine, 55 parts of modified aliphatic amine, 12.5 parts of polythiol, 4 parts of tertiary amine accelerator, 20 parts of amino-terminated liquid nitrile rubber, 12.5 parts of organic silicon defoamer, 5 parts of mildew inhibitor, 5 parts of antioxidant and 2.5 parts of heat stabilizer.
A. The volume ratio of the two components B is 1: 0.8.
Example 6
5 parts of bisphenol A type epoxy resin, 40 parts of bisphenol F type epoxy resin, 8 parts of diglycidyl adipate, 4 parts of diglycidyl phthalate, 60 parts of polyurethane modified epoxy resin, 5 parts of organosilicon modified epoxy resin, 7 parts of epoxy-terminated liquid nitrile rubber and 35 parts of aliphatic glycidyl ether; .
The component B comprises:
60 parts of modified alicyclic amine, 20 parts of modified aliphatic amine, 6 parts of polythiol, 1.3 parts of tertiary amine accelerator, 9 parts of amino-terminated liquid nitrile rubber, 6 parts of organosilicon defoamer, 4 parts of mildew preventive, 4 parts of antioxidant and 6 parts of heat stabilizer.
A. The volume ratio of the two components B is 1: 0.6.
The test results of the two-component epoxy resin grouting material in examples 1-6 are shown in the following table:
Claims (8)
1. a high-toughness epoxy resin grouting material for quickly repairing concrete structure joints is characterized in that: the material consists of A, B parts, wherein the A part consists of the following raw materials in parts by weight: 40-80 parts of glycidyl ether epoxy resin, 10-30 parts of glycidyl ester epoxy resin, 10-70 parts of flexibility-increasing modified epoxy resin, 10-30 parts of epoxy-terminated liquid nitrile rubber and 10-40 parts of reactive diluent; the part B consists of the following raw materials in parts by weight: 20-120 parts of modified amine curing agent, 5-15 parts of polythiol, 1-5 parts of tertiary amine accelerator, 5-25 parts of amino-terminated liquid nitrile rubber, 5-15 parts of organosilicon defoamer and 5-15 parts of anti-aging agent; A. the volume ratio of the two parts B is 1: 0.4-1.
2. The high-toughness epoxy resin grouting material for rapidly repairing the joint of the concrete structure as claimed in claim 1, wherein: the glycidyl ether epoxy resin is one or more of bisphenol A epoxy resin, hydrogenated bisphenol A epoxy resin, bisphenol F epoxy resin and aliphatic glycidyl ether epoxy resin.
3. The high-toughness epoxy resin grouting material for rapidly repairing the joint of the concrete structure as claimed in claim 1, wherein: the glycidyl ester epoxy resin is one or more of adipic acid diglycidyl ester, phthalic acid diglycidyl ester and terephthalic acid diglycidyl ester.
4. The high-toughness epoxy resin grouting material for rapidly repairing the joint of the concrete structure as claimed in claim 1, wherein: the flexibility-increasing modified epoxy resin is one or more of polyurethane modified epoxy resin, organic silicon modified epoxy resin and nitrile rubber modified epoxy resin.
5. The high-toughness epoxy resin grouting material for rapidly repairing the joint of the concrete structure as claimed in claim 1, wherein: the reactive diluent is aliphatic glycidyl ether.
6. The high-toughness epoxy resin grouting material for rapidly repairing the joint of the concrete structure as claimed in claim 1, wherein: the modified amine curing agent is one or more of IPDA (isophorone diisocyanate), glycidyl ether, epichlorohydrin, phenolic aldehyde modified alicyclic amine and aliphatic amine with the viscosity of less than 900mPa & s at 25 ℃.
7. The high-toughness epoxy resin grouting material for rapidly repairing the joint of the concrete structure as claimed in claim 1, wherein: the anti-aging agent is one or more of a mildew inhibitor, an antioxidant and a heat stabilizer.
8. The high-toughness epoxy resin grouting material for rapidly repairing the joint of the concrete structure as claimed in claims 1-7, wherein: the epoxy resin grouting material can work for more than or equal to 20min at normal temperature, the hardening time is less than or equal to 30min, the elongation at break is more than or equal to 15%, the compressive strength is more than or equal to 60MPa, and the bonding strength of a damp base surface is more than or equal to 3.0 MPa.
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| CN113337234A (en) * | 2021-05-14 | 2021-09-03 | 武汉理工大学 | Epoxy resin-based vitrimer adhesive cured at normal temperature and preparation method thereof |
| CN113372535A (en) * | 2021-05-31 | 2021-09-10 | 张家港衡业特种树脂有限公司 | Preparation method and use method of modified epoxy resin curing agent |
| CN114561176A (en) * | 2022-02-17 | 2022-05-31 | 交通运输部公路科学研究所 | Solvent-free high-elasticity epoxy pouring adhesive for repairing concrete movable crack and preparation method thereof |
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| CN113372535A (en) * | 2021-05-31 | 2021-09-10 | 张家港衡业特种树脂有限公司 | Preparation method and use method of modified epoxy resin curing agent |
| CN114561176A (en) * | 2022-02-17 | 2022-05-31 | 交通运输部公路科学研究所 | Solvent-free high-elasticity epoxy pouring adhesive for repairing concrete movable crack and preparation method thereof |
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