CN113308209A - Mixed diluent, environment-friendly high-permeability epoxy grouting material prepared from mixed diluent and preparation method of environment-friendly high-permeability epoxy grouting material - Google Patents
Mixed diluent, environment-friendly high-permeability epoxy grouting material prepared from mixed diluent and preparation method of environment-friendly high-permeability epoxy grouting material Download PDFInfo
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- CN113308209A CN113308209A CN202010123803.1A CN202010123803A CN113308209A CN 113308209 A CN113308209 A CN 113308209A CN 202010123803 A CN202010123803 A CN 202010123803A CN 113308209 A CN113308209 A CN 113308209A
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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
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
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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
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
-
- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention provides a mixed diluent, and a novel environment-friendly high-permeability epoxy grouting material is further prepared. The mixed diluent comprises an inactive diluent and an active diluent, and the environment-friendly high-permeability epoxy grouting material is composed of 100 parts of epoxy resin, 50-90 parts of the inactive diluent, 10-50 parts of the active diluent, 12-25 parts of a curing agent, 10-18 parts of a toughening agent and 5-8 parts of an accelerating agent. The diluent added in the grouting material is a nontoxic component, the viscosity of the epoxy grout is regulated and controlled by regulating the proportion of the diluent, the epoxy grouting material has low initial viscosity, strong groutability and controllable gelation time, and simultaneously, a solidified body of the epoxy grouting material has excellent mechanical property; the preparation process of the slurry is simple and easy to master, and the raw material source is wide.
Description
Technical Field
The invention relates to the technical field of epoxy resin grouting materials, in particular to a mixed diluent, an environment-friendly high-permeability epoxy grouting material prepared by using the mixed diluent and a preparation method of the environment-friendly high-permeability epoxy grouting material.
Background
The epoxy resin grouting material is called epoxy grout material for short, has the advantages of low grout viscosity, good permeability, good groutability, excellent mechanical property of a consolidation body and the like, and is widely applied to the aspects of foundation reinforcement treatment, concrete crack treatment and the like. The epoxy paste material generally comprises A, B two components, wherein the component A is a main agent and mainly comprises epoxy resin and a diluent, and the component B is a curing agent and mainly comprises a curing agent, a toughening agent and an accelerant.
At present, the epoxy grout material widely used in China mainly uses a furfural-acetone system as a diluent, the diluent of the system can effectively reduce the viscosity of the epoxy grout material, and the solidified epoxy grout material can keep excellent mechanical properties. Epoxy resin, furfural and acetone are used as a component A, and an amine curing agent is selected as a component B, and the components are uniformly mixed. The key technology is that furfural can react with acetone to generate furfurylideneacetone and bi-furfurylideneacetone. Furfurylideneacetone can react with amines and can be incorporated into the molecular chain of the epoxy resin. The prepared epoxy grouting material has low shrinkage of a cured material and excellent mechanical properties. However, furfural is a product which is very volatile and has high toxicity, and needs to be used with caution. In the construction process, if the operation is improper, the phenomena of environmental pollution, personnel poisoning and the like can be caused. In the face of the increasingly strict environmental requirements, the development of environment-friendly chemical grouting materials is urgently needed. The water-based epoxy grouting material takes water as a diluent, and can be nontoxic. However, the mechanical properties of the cured body of the water-based epoxy grouting material are poor, and the application of the water-based epoxy grouting material as a reinforcing and reinforcing material in engineering is difficult. In addition, corresponding environment-friendly epoxy grouting materials are available abroad, but the viscosity of prepared slurry is generally more than 200 mPa.s, the price is higher than that of domestic products, and the domestic engineering requirements are difficult to meet.
People use furfural and acetone as diluents to prepare epoxy grouting materials, and the diluents not only can reduce the viscosity of slurry, but also can enable non-reactive diluents acetone to participate in the reaction. The specific reaction process is as follows:
the slurry of the environment-friendly grouting material has low viscosity and proper operation time, according to JC/T1041-2007, the viscosity of the initial slurry of the grade I is less than or equal to 30mPa · s, and the operation time is more than 30 min. The epoxy resin has high viscosity, so that the epoxy resin is difficult to be directly used as the component A, and other diluents are required to reduce the viscosity of the component A. In general, the diluents added to the epoxy resin grouting material may be classified into two types: non-reactive diluents, such as toluene, xylene, acetone, styrene, and some phenolic compounds, which will not react with the epoxy resin and curing agent, and which will degrade the performance of the cured body; and secondly, reactive diluents such as low molecular weight glycidyl ether or glycidyl ester can participate in the curing reaction, the diluents can ensure that the material has good performance, but the diluting effect is poorer than that of non-reactive diluents, and the cross-linking density of the solidified body is reduced due to the excessive content of the diluents. In addition, because of the great application of the furfural-acetone system diluent in engineering, the researchers also use the furfural-acetone system diluent alone as the third diluent. Normally, acetone is used as the non-reactive diluent. However, in the epoxy grouting material using furfural-acetone as a diluent, acetone participates in the reaction, so that the epoxy grouting material has activity in the system. The system not only enables the material to have lower initial viscosity, but also can ensureThe mechanical properties of the epoxy grouting material are proved. However, furfural in furfural-acetone diluent system is a kind of material with high toxicity (LD)5065mg/kg, moderately toxic), volatile furan ring system derivatives, listed as class 3 carcinogens by the world health organization international agency for research on cancer, 10 months 2017. Therefore, the application range of the series of epoxy paste materials is increasingly limited, and a safe and environment-friendly epoxy paste material is urgently needed to replace the series of products.
Disclosure of Invention
Aiming at the problem that a diluent taking furfural-acetone as a system in the formula of the epoxy resin grouting material which is widely used at present is easy to cause harm to constructors and the environment, the invention firstly aims to provide a novel diluent combined formula and then prepare the environment-friendly epoxy chemical grouting material by utilizing the diluent.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
the invention firstly provides a mixed diluent, which is characterized by comprising an inactive diluent and an active diluent, wherein the inactive diluent and the active diluent are mixed according to the following mass part ratio of (5-9): (1-5).
Wherein, as the preferable technical scheme of the invention, the non-reactive diluent is one or a mixture of two of acetone, butanone and hexanone.
Further, the reactive diluent is one or a mixture of at least two of C12-C14 alkyl glycidyl ether, hexanediol diglycidyl ether or trimethylolpropane glycidyl ether.
The invention also provides an environment-friendly high-permeability epoxy grouting material which is prepared from the following raw materials in parts by weight:
wherein the epoxy resin is bisphenol A epoxy resin.
Further, the bisphenol A epoxy resin is one or a mixture of at least two of E-35, E-44 or E-51.
Further, the non-reactive diluent is one or a mixture of two of acetone, butanone and hexanone.
Further, the reactive diluent is one or at least two of C12-C14 alkyl glycidyl ether, hexanediol diglycidyl ether or trimethylolpropane glycidyl ether.
Further, the curing agent is phenolic aldehyde amine curing agent; the toughening agent is polyamide; the accelerant is DMP-30.
Finally, the invention also provides a preparation method of the environment-friendly high-permeability epoxy grouting material, which is characterized by comprising the following steps of:
step one, weighing an active diluent and a non-active diluent according to a ratio, mixing and uniformly stirring the two to prepare a mixed diluent;
weighing the epoxy resin and the mixed diluent according to the proportion respectively, and then mixing and uniformly stirring the epoxy resin and the mixed diluent to prepare a component A solution;
step three, weighing the toughening agent, the curing agent and the accelerator according to the proportion respectively, and then mixing and stirring uniformly to prepare a component B solution;
and step four, mixing the component A solution obtained in the step two and the component B solution obtained in the step three according to a ratio, and uniformly stirring to obtain the environment-friendly epoxy grouting material.
Compared with the prior art, the invention has the technical advantages that:
1. the mixed diluent disclosed by the invention is prepared by combining the inactive diluent and the active diluent, and a new diluent formula is prepared, wherein the components are all nontoxic components, so that the environment friendliness and the safety of construction personnel are ensured.
2. The grouting material provided by the invention regulates and controls the viscosity of epoxy grout by regulating the proportion of the diluent, enables the gelling time to be controllable, and enables a solidified body of the epoxy grouting material to have excellent mechanical properties.
3. The slurry preparation process of the environment-friendly high-permeability epoxy grouting material is simple and easy to master, and the source of the raw materials is wide.
4. The epoxy grouting material disclosed by the invention is low in initial viscosity and strong in grouting property, the gelation time can be regulated according to a formula, and excellent mechanical properties can be ensured.
Detailed Description
Hereinafter, embodiments of a mixed diluent, an environmentally friendly high permeability epoxy grouting material prepared using the same, and a method for preparing the same according to the present invention will be described in detail.
The examples described herein are specific embodiments of the present invention, are intended to be illustrative and exemplary in nature, and are not to be construed as limiting the scope of the invention. In addition to the embodiments described herein, those skilled in the art will be able to employ other technical solutions which are obvious based on the disclosure of the claims and the specification of the present application, and these technical solutions include technical solutions which make any obvious replacement or modification for the embodiments described herein.
The mixed diluent of the invention selects non-active and active diluents to combine, and then a new diluent formula is prepared. The diluent added in the grouting material is a nontoxic component, the viscosity of the epoxy grout is regulated and controlled by regulating the proportion of the diluent, the gelling time is controllable, and the solidified body of the epoxy grouting material has excellent mechanical properties.
The invention firstly provides a mixed diluent, which is characterized by comprising an inactive diluent and an active diluent, wherein the inactive diluent and the active diluent are mixed according to the following mass part ratio of (5-9): (1-5). Wherein the non-reactive diluent is one or a mixture of two of acetone, butanone and hexanone, and the reactive diluent is one or a mixture of at least two of C12-C14 alkyl glycidyl ether, hexanediol diglycidyl ether and trimethylolpropane glycidyl ether.
The invention further provides an environment-friendly high-permeability epoxy grouting material prepared by using the mixed diluent, which is prepared from the following raw materials in parts by weight: 100 parts of epoxy resin, 50-90 parts of non-reactive diluent, 10-50 parts of reactive diluent, 12-25 parts of curing agent, 10-18 parts of toughening agent and 5-8 parts of accelerator. Wherein the preferred epoxy resin is bisphenol A epoxy resin; the bisphenol A epoxy resin is one or at least two of E-35, E-44 or E-51; the non-reactive diluent is one or two of acetone, butanone or hexanone; the reactive diluent is one or at least two of C12-C14 alkyl glycidyl ether, hexanediol diglycidyl ether or trimethylolpropane glycidyl ether; the curing agent is phenolic aldehyde amine curing agent; the toughening agent is polyamide; the promoter is DMP-30.
When the environment-friendly epoxy grouting material is prepared, the component A is prepared, the epoxy resin and the diluent are weighed according to the proportion respectively, then the epoxy resin and the diluent are mixed, and a glass rod is used for uniformly stirring to prepare the component A; preparing a component B, weighing and mixing polyamide, T31 and DMP30 respectively, and stirring uniformly by using a glass rod to prepare a solution B; and (3) evenly mixing the A, B component solution according to the proportion, and evenly mixing the mixture by using a glass rod to prepare the environment-friendly epoxy grouting material.
The following is a detailed description of the invention in terms of three examples, with the relevant identification of the properties of the product according to the invention being carried out according to five examples:
the first embodiment is as follows:
(1) mixing 100 parts by weight of epoxy resin E-51, 10 parts by weight of hexanediol diglycidyl ether and 90 parts by weight of acetone to obtain solution A;
(2) mixing 10 parts by weight of polyamide, 5 parts by weight of DMP-30 and 25 parts by weight of T-31 to obtain a solution B;
(3) when in use, the solution A and the solution B are mixed to obtain the high-permeability epoxy grouting material.
Example two:
(1) mixing 100 parts by weight of epoxy resin E-51, 20 parts by weight of hexanediol diglycidyl ether and 80 parts by weight of acetone to obtain solution A;
(2) mixing 10 parts by weight of polyamide, 5 parts by weight of DMP-30 and 25 parts by weight of T-31 to obtain a solution B;
(3) when in use, the solution A and the solution B are mixed to obtain the high-permeability epoxy grouting material.
Example three:
(1) mixing 100 parts by weight of epoxy resin E-51, 30 parts by weight of hexanediol diglycidyl ether and 70 parts by weight of acetone to obtain solution A;
(2) mixing 10 parts by weight of polyamide, 25 parts by weight of T-31 and 5 parts by weight of DMP-30 to obtain a solution B;
(3) when in use, the solution A and the solution B are mixed to obtain the high-permeability epoxy grouting material.
Example four:
(1) mixing 100 parts by weight of epoxy resin E-51, 40 parts by weight of hexanediol diglycidyl ether and 60 parts by weight of acetone to obtain solution A;
(2) mixing 10 parts by weight of polyamide, 25 parts by weight of T-31 and 5 parts by weight of DMP-30 to obtain a solution B;
(3) when in use, the solution A and the solution B are mixed to obtain the high-permeability epoxy grouting material.
Example five:
(1) mixing 100 parts by weight of epoxy resin E-51, 50 parts by weight of hexanediol diglycidyl ether and 50 parts by weight of acetone to obtain solution A;
(2) mixing 10 parts by weight of polyamide, 25 parts by weight of T-31 and 5 parts by weight of DMP-30 to obtain a solution B;
(3) when in use, the solution A and the solution B are mixed to obtain the high-permeability epoxy grouting material.
The prepared epoxy grouting material is subjected to physical and mechanical index measurement, and the index comprises the following components: initial slurry viscosity, open time, compressive strength, bond strength. Wherein: the initial viscosity refers to that the viscosity of the A, B two-component slurry is measured by a single-cylinder rotational viscometer method immediately after being uniformly mixed, and is measured according to the GB/T2794-2013 standard; the operable time is the time that the two-component slurry takes from mixing to the time the viscosity reaches 200mPa · s, determined with reference to GB/T2794-2013 standard; the compressive strength is referred to GB/T2567-:
TABLE 1 Main Performance index of the environmentally friendly high permeability epoxy grouting material in five examples
The A-fraction slurry was subjected to an acute oral toxicity test in rats with reference to GB/T21757-2008. The results of the acute oral toxicity test in rats are shown in table 2:
TABLE 2 acute toxicity test results of rats in five examples
| Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | |
| LD50(mg/kg) | ≥5000 | ≥5000 | ≥5000 | ≥5000 | ≥5000 |
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The mixed diluent is characterized by comprising an inactive diluent and an active diluent, wherein the mass part ratio of the inactive diluent to the active diluent is (5-9): (1-5).
2. A mixing diluent as defined in claim 1 wherein: the non-reactive diluent is one or a mixture of two of acetone, butanone and hexanone.
3. A mixing diluent as defined in claim 1 wherein: the reactive diluent is one or a mixture of at least two of C12-C14 alkyl glycidyl ether, hexanediol diglycidyl ether or trimethylolpropane glycidyl ether.
4. An environment-friendly high-permeability epoxy grouting material prepared by using the mixed diluent of any one of claims 1 to 3, which is characterized by comprising the following components in percentage by mass:
epoxy resin 100 parts
50-90 parts of non-reactive diluent
10-50 parts of reactive diluent
12-25 parts of curing agent
10-18 parts of toughening agent
5-8 parts of an accelerator.
5. The environment-friendly high-permeability epoxy grouting material as claimed in claim 4, wherein: the epoxy resin is bisphenol A type epoxy resin.
6. The environment-friendly high-permeability epoxy grouting material as claimed in claim 5, wherein: the bisphenol A epoxy resin is one or a mixture of at least two of E-35, E-44 or E-51.
7. The environment-friendly high-permeability epoxy grouting material as claimed in claim 4, wherein: the non-reactive diluent is one or a mixture of two of acetone, butanone and hexanone; the reactive diluent is one or a mixture of at least two of C12-C14 alkyl glycidyl ether, hexanediol diglycidyl ether or trimethylolpropane glycidyl ether.
8. The environment-friendly high-permeability epoxy grouting material as claimed in claim 4, wherein: the curing agent is phenolic aldehyde amine curing agent; the toughening agent is polyamide.
9. The environment-friendly high-permeability epoxy grouting material as claimed in claim 4, wherein: the accelerant is DMP-30.
10. The method for preparing the environment-friendly high-permeability epoxy grouting material according to any one of claims 4 to 9, comprising the steps of:
step one, weighing an active diluent and a non-active diluent according to a ratio, mixing and uniformly stirring the two to prepare a mixed diluent;
weighing the epoxy resin and the mixed diluent according to the proportion respectively, and then mixing and uniformly stirring the epoxy resin and the mixed diluent to prepare a component A solution;
step three, weighing the toughening agent, the curing agent and the accelerator according to the proportion respectively, and then mixing and stirring uniformly to prepare a component B solution;
and step four, mixing the component A solution obtained in the step two and the component B solution obtained in the step three according to a ratio, and uniformly stirring to obtain the environment-friendly epoxy grouting material.
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| CN114195985A (en) * | 2022-01-10 | 2022-03-18 | 中国电建集团中南勘测设计研究院有限公司 | Epoxy resin grouting material and application |
| CN115340839A (en) * | 2022-09-16 | 2022-11-15 | 成都京水基础科技有限公司 | Environment-friendly epoxy grouting material and preparation method thereof |
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