CN113061323A - Grouting material, preparation method and application - Google Patents
Grouting material, preparation method and application Download PDFInfo
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- CN113061323A CN113061323A CN202110398635.1A CN202110398635A CN113061323A CN 113061323 A CN113061323 A CN 113061323A CN 202110398635 A CN202110398635 A CN 202110398635A CN 113061323 A CN113061323 A CN 113061323A
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- grouting material
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- glycidyl ether
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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
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
-
- 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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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Epoxy Resins (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a grouting material, a preparation method and application, and belongs to the technical field of building materials. A grouting material comprising a component a and a component B; the component A is prepared from raw materials including an epoxy matrix and an active diluent; the reactive diluent is at least two of butanediol glycidyl ether, propenyl glycidyl ether and butyl glycidyl ether; the component B is prepared from raw materials including a curing agent, a curing regulator, a coupling agent and a diluent; the mass ratio of the component A to the component B is 100: (35-60). The grouting material of the invention has the following advantages due to the synergistic effect among the components: low initial viscosity, long working time, and excellent dry and wet bonding properties.
Description
Technical Field
The invention belongs to the technical field of building materials, and particularly relates to a grouting material, a preparation method and application thereof.
Background
The grouting material is a material which can be poured into the bottom layer or gap of a building to increase the strength of the stratum, reduce the permeability of the stratum, prevent the stratum from deforming or repair the cracks of the concrete building.
With the development of technology, grouting materials have been popularized and applied in the fields of hydropower, construction, transportation, mining and the like, and a plurality of engineering technical problems are solved. The grouting materials commonly used at present are roughly classified into an anti-seepage and water-stop type grouting material and a reinforcing and reinforcing type grouting material according to the performance and use of the grouting material. Wherein the anti-seepage water-type grouting material mainly comprises four large series of water glass, acrylate, polyurethane and lignin slurry; the reinforcing and strengthening grouting material mainly comprises two major varieties of epoxy resin and methyl methacrylate grouting material.
The epoxy resin grouting material has the advantages of low viscosity, good permeability, high mechanical strength and the like, can play a role in seepage prevention and reinforcement, improves the durability of a structure, and prolongs the service life of engineering facilities, so that the epoxy resin grouting material is used in most water conservancy projects and underground waterproof projects.
However, the existing epoxy resin grouting material has the following problems: low mechanical property, difficult control of curing time, low crosslinking degree, environmental pollution and the like.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art described above. To this end, the invention proposes a grouting material having the following characteristics due to the synergistic effect between the components: low initial viscosity, long working time, and excellent dry and wet bonding properties.
The second aspect of the present invention provides a method for preparing the grouting material.
The third aspect of the present invention provides an application of the grouting material in the field of construction engineering.
According to an aspect of the present invention, there is provided a grouting material comprising an a-component and a B-component;
the component A is prepared from raw materials including an epoxy matrix and an active diluent; the reactive diluent is at least two of butanediol glycidyl ether, propenyl glycidyl ether and butyl glycidyl ether;
the component B is prepared from raw materials including a curing agent, a curing regulator, a coupling agent and a diluent;
the mass ratio of the component A to the component B is 100: (35-60).
According to a preferred embodiment of the present invention, at least the following advantages are provided:
(1) because the invention adopts at least two kinds of reactive diluents, the reactive diluents have different molecular chain lengths and different viscosities, so that the reactive diluents are matched with each other, the viscosity of the grouting material can be reduced, the wettability of the grouting material and a grouting matrix (such as a concrete gap) is improved, and the interface bonding capability and the mechanical strength between the grouting material and the grouting matrix are further improved; meanwhile, the active diluents with different molecular chain lengths are matched with each other, so that the toughness of the cured grouting material can be improved.
(2) Compared with the toxic and strong-smell reactive diluent adopted by the traditional grouting material, the reactive diluent adopted by the invention has low toxicity, and is more environment-friendly and green;
(3) the component B comprises a curing regulator, and the curing time can be regulated according to the requirement, so that the construction operation is more flexible.
In some embodiments of the present invention, the a component is prepared from the following raw materials in parts by mass:
80-120 parts of epoxy matrix;
10-25 parts of reactive diluent.
In some embodiments of the present invention, the B component is prepared from the following raw materials in parts by mass:
in some embodiments of the present invention, the epoxy matrix is at least one of bisphenol a type resin and bisphenol F type resin.
In some preferred embodiments of the present invention, the epoxy matrix includes 0 to 120 parts by mass of bisphenol F type resin and 0 to 120 parts by mass of bisphenol a type resin.
In some preferred embodiments of the present invention, the reactive diluent comprises 0 to 15 parts by mass of propenyl glycidyl ether, 0 to 20 parts by mass of butanediol glycidyl ether, and 0 to 20 parts by mass of butyl glycidyl ether.
In some embodiments of the invention, the a component further comprises an inorganic filler.
In some embodiments of the present invention, the inorganic filler is at least one of powdered aluminum oxide and zinc oxide.
In some embodiments of the present invention, the inorganic filler is added in an amount of 0 to 10 parts by mass.
In some preferred embodiments of the present invention, the inorganic filler is added in an amount of 0 to 5 parts by mass of alumina powder and 0 to 5 parts by mass of zinc oxide powder.
The aluminum oxide can improve the interface bonding strength, increase the resin hardness, improve the mechanical property to a certain extent and promote the resin curing to a certain extent.
The zinc oxide can promote resin curing to a certain extent, improves the mechanical property of the resin and has ultraviolet aging resistance.
When the inorganic filler is added into the component A, the hydrophilic/hydrophobic performance of the grouting material can be adjusted, so that the moisture resistance and the wet adhesion capability of the grouting material can be improved by adjusting the type and the addition amount of the filler.
In some embodiments of the invention, the curing agent is at least one of a modified polyetheramine and a modified aromatic amine.
In some preferred embodiments of the present invention, the curing agent is a modified polyetheramine.
The modified polyether amine and the modified aromatic amine are modified by amino chemical functional groups, namely, the amino content in the original long-chain molecules is changed.
In some preferred embodiments of the present invention, the curing agent comprises 150 to 400 parts by mass of the modified polyether amine and 0 to 100 parts by mass of the modified aromatic amine.
In some embodiments of the invention, the cure regulator comprises at least one of an alkylphenol and resorcinol.
In some preferred embodiments of the invention, the alkyl phenol comprises nonyl phenol.
In some preferred embodiments of the present invention, the curing regulator includes 0 to 35 parts by mass of alkylphenol and 0 to 20 parts by mass of resorcinol.
The alkylphenol and the resorcinol are used for inhibiting the activity of the curing agent and prolonging the curing time.
In some preferred embodiments of the present invention, the cure conditioner may also include dibutyltin dilaurate.
The dibutyltin dilaurate acts to promote the activity of the curing agent.
In some preferred embodiments of the present invention, the dibutyltin dilaurate is added in an amount of 0 to 20 parts by mass.
In conclusion, the alkylphenol/resorcinol and the dibutyltin dilaurate are matched with each other, and the curing time of the grouting material can be adjusted by controlling the addition amount and the addition ratio, so that the operation is more flexible.
In some embodiments of the invention, the coupling agent is a silane coupling agent that is at least one of KH550, KH560, and KH 570.
The coupling agent is used for improving the interface bonding capacity between the grouting material and a matrix (including concrete).
In some embodiments of the invention, the diluent is benzyl alcohol.
The diluent functions to reduce the viscosity of the grouting material.
Since the reactive diluent (a-component) can react with the curing agent (B-component); the diluent (B-component) may react with the epoxy matrix (a-component); to avoid failure of the grouting material during storage, the diluent and the reactive diluent cannot be used in combination.
According to a second aspect of the present invention, there is provided a method for preparing the grouting material, comprising the steps of:
s1, heating the epoxy matrix, adding other preparation raw materials in the component A, and uniformly stirring to obtain the component A;
s2, uniformly stirring all preparation raw materials in the component B to obtain the component B;
and S3, uniformly mixing the component A and the component B according to a proportion to obtain the grouting material.
The preparation method according to a preferred embodiment of the present invention has at least the following advantageous effects:
(1) the preparation method provided by the invention separately stores the component A and the component B, and can freely adjust the proportion of the component A \ component B, so that the construction process is more flexible.
(2) The preparation method provided by the invention mainly operates stirring, is simple to operate and saves energy.
In some embodiments of the present invention, in step S1, the heating is performed at a temperature of 60 ℃ to 70 ℃.
In step S1, the heating is performed to reduce the viscosity and improve the subsequent mixing efficiency.
In some embodiments of the present invention, in step S1, the stirring speed is 250rpm to 350 rpm.
In some embodiments of the present invention, in step S2, the mixing is performed by stirring at a rotation speed of 250 to 350 rpm.
In some embodiments of the present invention, the preparation method further comprises performing vacuum defoaming after the component a and the component B are uniformly mixed in proportion.
When the component A and the component B are uniformly mixed according to the proportion, the mixture is used within 60min to avoid the grouting material from being cured, losing efficacy or reducing mechanical properties before use.
According to a third aspect of the present invention, the use of said grouting material in the field of construction engineering is proposed.
Grouting materials, although they also involve the curing of epoxy materials, take into account the following characteristics with respect to the curing of conventional coatings or adhesives:
viscosity and fluidity of the grouting material before use: because the grouting material is needed to fill the gap in many times, if the viscosity is too high, the condition that the gap is not completely filled can occur;
curing speed of grouting material: as described above, if the curing degree is too fast, the gap is not completely filled, and the grouting material is completely cured, so that the gap filling function cannot be completed;
matching degree of grouting material and grouted matrix: the wetting degree and the shrinkage degree after drying are included, wherein the wetting degree is related to whether the bonding can be tightly carried out at the beginning, and the shrinkage degree after drying is related to the service life of the grouting material;
the hydrophilic and hydrophobic performances of the grouting material are as follows: because the grouting material is often cured in a humid environment and needs to meet the requirements of water resistance and seepage resistance, the hydrophilic and hydrophobic properties of the grouting material need to be balanced.
Detailed Description
The concept and technical effects of the present invention will be clearly and completely described below in conjunction with the embodiments to fully understand the objects, features and effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention.
Unless otherwise specified, in the detailed description section, the reagent information used is as follows:
bisphenol F type resin: CAS number 2095-03-6;
bisphenol A type resin: CAS number 1675-54-3;
propenyl glycidyl ether: CAS number 106-92-3;
butanediol glycidyl ether: CAS number 2425-79-8;
butyl glycidyl ether: CAS number 2426-08-6;
modified polyether amine: CAS number 9046-10-0;
modified aromatic amine: CAS number 593-00-0;
alkylphenol: the specific embodiment adopts nonyl phenol, CAS number 25154-52-3;
resorcinol: CAS number 108-46-3;
dibutyltin dilaurate: CAS number 77-58-7;
benzyl alcohol: CAS number 100-51-6;
KH 550: CAS number 919-30-2.
Example 1
The grouting material prepared in the embodiment comprises the following specific raw material components as shown in table 1, and the specific process comprises the following steps:
s1, heating an epoxy matrix at 60 ℃, adding an active diluent and an inorganic filler, and uniformly stirring at a rotating speed of 250rpm to obtain a component A;
s2, mixing all the raw materials of the component B, and uniformly stirring at the rotating speed of 300rpm to obtain the component B;
and S3, uniformly mixing the component A and the component B according to the mass ratio to obtain the grouting material.
Examples 2 to 6 respectively prepare a grouting material, which is different from example 1 in specific raw material components shown in tables 2 to 6.
TABLE 1 raw material components used in example 1 in parts by mass
TABLE 2 raw material components for example 2 in parts by mass
TABLE 3 raw material components for example 3 in parts by mass
TABLE 4 raw material components used in example 4 in parts by mass
TABLE 5 raw material components used in example 5 in parts by mass
TABLE 6 raw material components for example 6 in parts by mass
Comparative example 1
The comparative example prepared a grouting material, and the difference between the specific process and the example 3 was:
(1) the specific raw material components were different, and the specific components are shown in table 7.
TABLE 7 raw material composition for comparative example 1 in parts by mass of the agent
Comparative example 2
The comparative example prepared a grouting material, and the difference between the specific process and the example 3 was:
(1) in step S1, the bisphenol F type epoxy resin is used alone as component A without adding any reactive diluent or filler.
The specific components of this comparative example are shown in table 8.
TABLE 8 raw material components for comparative example 2 in parts by mass
Comparative example 3
This comparative example prepared a grouting material, which specifically differs from example 3 in that: :
(1) the specific raw material components were different, and the specific components are shown in table 9.
TABLE 9 raw material components for comparative example 3 in parts by mass
Comparative example 4
This comparative example prepared a grouting material, which specifically differs from example 3 in that: :
(1) the specific raw material components were different, and the specific components are shown in table 10.
TABLE 10 raw material components for comparative example 4 in parts by mass
Test examples
This test example tested the performance of the grouting material obtained in the examples. Wherein the test method is carried out by referring to a standard document with the number JC/T1041-2007.
The results of the performance tests are shown in table 11.
Table 11 results of performance test of grouting material obtained in examples and comparative examples
In the practical period, no dibutyltin dilaurate is added in the examples 4 to 6, so that the curing agent is not promoted, and the practical period is longer than that in the examples 1 to 3. The operation time can be effectively adjusted by adjusting the addition amount and the addition proportion between the dibutyltin dilaurate and the phenol regulator, so that the construction is more flexible.
From the initial viscosity, whether replacing the epoxy matrix (comparative example 1), reducing the application of reactive diluent (comparative example 2) or omitting the application of curing regulator, an increase in the initial viscosity is brought about; the grouting material provided by the invention can reduce the initial viscosity and prolong the operable time through the synergistic cooperation of the components.
From the viewpoint of the mechanical strength performance of the material (high compressive strength, tensile shear strength, tensile strength, dry bonding strength and wet bonding strength), if the formula is not in the range provided by the invention, a large proportion of performance loss occurs; particularly, the collocation of the reactive diluents, if only one reactive diluent is added to the component A (comparative example 4), the synergistic effect between the diluents is weakened, and thus, various mechanical properties of the grouting material are reduced.
In conclusion, the grouting material provided by the invention has the advantages of low initial viscosity, long operable time, high compressive strength, excellent tensile shear strength and tensile strength, and excellent performance parameters such as excellent dry bonding strength and wet bonding strength, so that the grouting material has good application prospect and economic benefit in the aspect of building repair waterproof grouting.
The embodiments of the present invention have been described in detail, but the present invention is not limited to the embodiments, and various changes can be made without departing from the gist of the present invention within the knowledge of those skilled in the art. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
Claims (10)
1. A grouting material, characterized by comprising a component a and a component B;
the component A is prepared from raw materials including an epoxy matrix and an active diluent; the reactive diluent is at least two of butanediol glycidyl ether, propenyl glycidyl ether and butyl glycidyl ether;
the component B is prepared from raw materials including a curing agent, a curing regulator, a coupling agent and a diluent;
the mass ratio of the component A to the component B is 100: (35-60).
2. The grouting material of claim 1, wherein the component A is prepared from the following raw materials in parts by mass:
80-120 parts of epoxy matrix;
10-25 parts of reactive diluent.
3. The grouting material of claim 1, wherein the component B is prepared from the following raw materials in parts by mass:
4. a grouting material as claimed in any one of claims 1 to 3, characterized in that the epoxy matrix is at least one of bisphenol A type resin and bisphenol F type resin.
5. A grouting material as claimed in any one of claims 1 to 3, wherein the curing agent is at least one of modified polyether amine and aromatic amine.
6. A grouting material as claimed in any one of claims 1 to 3, characterised in that the setting modifier is at least one of alkyl phenol and resorcinol.
7. A grouting material as claimed in any of claims 1 to 3, characterised in that the a-component also comprises an inorganic filler.
8. A method for preparing a grouting material as claimed in any one of claims 1 to 7, comprising the steps of:
s1, heating the epoxy matrix, adding other preparation raw materials in the component A, and uniformly stirring to obtain the component A;
s2, uniformly stirring all preparation raw materials in the component B to obtain the component B;
and S3, uniformly mixing the component A and the component B according to a proportion to obtain the grouting material.
9. The method according to claim 8, wherein the heating is performed at a temperature of 60 ℃ to 70 ℃ in step S1.
10. Use of the grouting material according to any one of claims 1 to 7 in the field of construction engineering.
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| CN202110398635.1A CN113061323A (en) | 2021-04-13 | 2021-04-13 | Grouting material, preparation method and application |
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Application publication date: 20210702 |