CN110563375A - Concrete repairing agent and preparation method thereof - Google Patents
Concrete repairing agent and preparation method thereof Download PDFInfo
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- CN110563375A CN110563375A CN201910844749.7A CN201910844749A CN110563375A CN 110563375 A CN110563375 A CN 110563375A CN 201910844749 A CN201910844749 A CN 201910844749A CN 110563375 A CN110563375 A CN 110563375A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- 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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3271—Hydroxyamines
- C08G18/3275—Hydroxyamines containing two hydroxy groups
-
- 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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4804—Two or more polyethers of different physical or chemical nature
-
- 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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6666—Compounds of group C08G18/48 or C08G18/52
- C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6681—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/32 or C08G18/3271 and/or polyamines of C08G18/38
- C08G18/6688—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/32 or C08G18/3271 and/or polyamines of C08G18/38 with compounds of group C08G18/3271
-
- 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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
- C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention provides a concrete repairing agent and a preparation method thereof, wherein the repairing agent consists of a component A and a component B in a mass ratio of 1: 1; the component A comprises 66 parts of polymethylene polyphenyl isocyanate, 34 parts of surfactant and 60 parts of defoaming agent in parts by mass; the component B comprises 33 parts of N, N, N, N, -tetra (2-hydroxypropyl) ethylenediamine, 7 parts of polyether polyol, 4 parts of fatty alcohol-polyoxyethylene ether, 55 parts of surfactant and a little pigment. The concrete repairing agent is different from the traditional bisphenol A resin, adopts polymethylene polyphenyl isocyanate as a main agent, has the technical characteristics of low normal-temperature viscosity, small change of low-temperature viscosity, good flexibility of a cured body, strong adhesion, good permeability and low cost, and can remarkably reduce the surface tension of the seam injection glue by adding the surfactant component into the components, so that the glue solution can quickly and uniformly permeate within 10 minutes and has good wettability.
Description
Technical Field
The invention belongs to the technical field of concrete repair, and particularly relates to a concrete repairing agent and a preparation method thereof.
Background
at present, the concrete defect repairing materials include but are not limited to epoxy resin repairing agents, polyurethane repairing agents, cement-based repairing mortar and other repairing materials, and most of the repairing materials have long repairing and curing time, complex operation and poor permeability.
most epoxy resin repair materials have high viscosity, cannot achieve self-permeation, needs auxiliary operation of tool equipment and has poor weather resistance; the polyurethane repairing material has the advantages of poor permeability, low strength, poor weather resistance and high aging speed; the cement-based repair material is only suitable for surface coating maintenance, has strict requirements on maintenance conditions, and is easy to fall off or crack when coated too thinly.
In the Chinese patent modified graphene oxide concrete crack repairing material with the patent number of CN201810928611 and the preparation method thereof, the inventor adopts a cement-based material which is only suitable for surface repair of concrete and cannot play a role in completely repairing and reinforcing deep cracks; in a Chinese patent with the patent number of CN201810798120, a concrete crack repairing material based on a phosphorus-magnesium material and a construction process thereof, an inventor also adopts a cement-based material to repair a concrete crack, can not completely repair and solve a deep crack, and can only be used for repairing the concrete surface and after the crack is grooved; in a low-viscosity concrete crack repairing pouring adhesive with a patent number of CN201810203639 and a preparation method thereof, an inventor uses epoxy resin as a cementing material, adopts an active diluent to greatly reduce the viscosity of the epoxy resin, reduces the volatilization of the diluent and reduces the volatilization of toxic substances, but the viscosity of the material still needs to be poured by means of tools and equipment to play a role, as mentioned in the patent (after a building concrete crack is repaired by the low-pressure pouring adhesive, a solid core drilling and sampling graph is obtained, the sampling depth of a core sample is 200mm), the operation is not beneficial to the field, the low-pressure grouting operation is complicated, and the curing time is long.
disclosure of Invention
in view of the above, the present invention is directed to a concrete repairing agent and a preparation method thereof.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a concrete repairing agent and a preparation method thereof, wherein the repairing agent consists of a component A and a component B in a mass ratio of 1: 1; the component A comprises 66 parts of polymethylene polyphenyl isocyanate, 34 parts of surfactant and 60 parts of defoaming agent in parts by mass; the component B comprises 33 parts of N, N, N, N, -tetra (2-hydroxypropyl) ethylenediamine, 7 parts of polyether polyol, 4 parts of fatty alcohol-polyoxyethylene ether, 55 parts of surfactant and a little pigment.
Furthermore, the surfactant is aromatic solvent oil, and can remarkably reduce the surface tension of the crack glue, so that the crack glue can permeate quickly and uniformly and is good in wetting.
Further, the defoaming agent is a liquid defoaming agent.
furthermore, the polyether polyol and the fatty alcohol-polyoxyethylene ether jointly form a composite curing agent in the component B, and the composite curing agent enables the concrete repairing agent to have the technical characteristics of low viscosity and low-temperature curing, is wide in mixing amount range, and is suitable for a metering mode of 'extensive' field construction.
Further, the N, N, N, N, -tetra (2-hydroxypropyl) ethylenediamine is an accelerator in the component B.
The preparation method of the concrete healant comprises the following steps:
(1) Putting the polymethylene polyphenyl isocyanate in parts by mass into a reaction kettle, adding a surfactant and a defoaming agent into the reaction kettle after cooling and stabilizing, and uniformly stirring to obtain a component A, wherein the polymethylene polyphenyl isocyanate and the surfactant in the component A have excellent diluting capability, the crosslinking time is not prolonged, and no pungent smell exists;
(2) Mixing and stirring the N, N, N, N-tetra (2-hydroxypropyl) ethylenediamine, the polyether polyol, the fatty alcohol-polyoxyethylene ether and the surfactant uniformly to obtain a component B;
(3) The concrete repairing agent is characterized in that the viscosity of the concrete repairing agent is far lower than that of epoxy resin, the surface tension of the concrete repairing agent is one third of that of water, the concrete repairing agent is low-temperature resistant, excellent flexibility and bonding performance are provided by the cooperation of polyether polyol and fatty alcohol-polyoxyethylene ether, the flexibility of the concrete repairing agent is superior to that of bisphenol A epoxy resin, and in addition, the concrete repairing agent can be matched with quartz sand and carborundum to be prepared into mortar for use.
Further, the cooling stabilization time in the step (1) is 8 hours, and the intermediate cooling in the reaction kettle is ensured.
compared with the prior art, the repairing agent has the following advantages:
1. the concrete repairing agent is different from the traditional bisphenol A resin, adopts the polymethylene polyphenyl isocyanate as a main agent, has the technical characteristics of low normal-temperature viscosity, small change of low-temperature viscosity, good flexibility of a cured body, strong adhesion, good permeability and low cost, and can remarkably reduce the surface tension of the seam injection glue by adding the surfactant component into the components, so that the glue solution can quickly and uniformly permeate within 10 minutes and has good wettability;
2. The concrete repairing agent is different from a non-reactive diluent and a glycidyl ether reactive diluent, and the aromatic solvent oil diluent with the same excellent diluting capacity is adopted, so that the defects that the curing shrinkage of the non-reactive diluent is large, and the elasticity of an ether diluent cured body is surplus and the rigidity is insufficient are overcome, and in addition, the cross-linking time is not prolonged, the solidifying point is extremely low, and no pungent smell exists;
3. The concrete healant disclosed by the invention adopts the polyether polyol and modified fatty alcohol composite curing agent, has the technical characteristics of low viscosity and low-temperature curing, is wider in mixing amount range, and is suitable for a metering mode of 'extensive' field construction.
Detailed Description
the present invention will be described in detail with reference to examples.
Example 1
a concrete repairing agent and a preparation method thereof, wherein the repairing agent consists of a component A and a component B in a mass ratio of 1: 1; the component A comprises 66 parts of polymethylene polyphenyl isocyanate, 34 parts of surfactant and 60 parts of defoaming agent in parts by mass; the component B comprises 33 parts of N, N, N, N, -tetra (2-hydroxypropyl) ethylenediamine, 7 parts of polyether polyol, 4 parts of fatty alcohol-polyoxyethylene ether, 55 parts of surfactant and a little pigment.
The preparation method of the concrete healant comprises the following steps:
(1) Putting the polymethylene polyphenyl isocyanate in parts by mass into a reaction kettle, adding a surfactant and a defoaming agent into the reaction kettle after cooling and stabilizing, and uniformly stirring to obtain a component A, wherein the polymethylene polyphenyl isocyanate and the surfactant in the component A have excellent diluting capability, the crosslinking time is not prolonged, and no pungent smell exists;
(2) Mixing and stirring the N, N, N, N-tetra (2-hydroxypropyl) ethylenediamine, the polyether polyol, the fatty alcohol-polyoxyethylene ether and the surfactant uniformly to obtain a component B;
(3) The concrete repairing agent is characterized in that the viscosity of the concrete repairing agent is far lower than that of epoxy resin, the surface tension of the concrete repairing agent is one third of that of water, the concrete repairing agent is low-temperature resistant, excellent flexibility and bonding performance are provided by the cooperation of polyether polyol and fatty alcohol-polyoxyethylene ether, the flexibility of the concrete repairing agent is superior to that of bisphenol A epoxy resin, and in addition, the concrete repairing agent can be matched with quartz sand and carborundum to be prepared into mortar for use.
Example 2
A concrete repairing agent and a preparation method thereof, wherein the repairing agent consists of a component A and a component B in a mass ratio of 1: 1; wherein, the component A comprises 65 parts of polymethylene polyphenyl isocyanate, 35 parts of surfactant and 60 parts of defoaming agent by mass; the component B comprises 33 parts of N, N, N, N, -tetra (2-hydroxypropyl) ethylenediamine, 7 parts of polyether polyol, 4 parts of fatty alcohol-polyoxyethylene ether, 55 parts of surfactant and a little pigment.
the preparation method of the concrete healant comprises the following steps:
(1) putting the polymethylene polyphenyl isocyanate in parts by mass into a reaction kettle, adding a surfactant and a defoaming agent into the reaction kettle after cooling and stabilizing, and uniformly stirring to obtain a component A, wherein the polymethylene polyphenyl isocyanate and the surfactant in the component A have excellent diluting capability, the crosslinking time is not prolonged, and no pungent smell exists;
(2) mixing and stirring the N, N, N, N-tetra (2-hydroxypropyl) ethylenediamine, the polyether polyol, the fatty alcohol-polyoxyethylene ether and the surfactant uniformly to obtain a component B;
(3) the concrete repairing agent is characterized in that the viscosity of the concrete repairing agent is far lower than that of epoxy resin, the surface tension of the concrete repairing agent is one third of that of water, the concrete repairing agent is low-temperature resistant, excellent flexibility and bonding performance are provided by the cooperation of polyether polyol and fatty alcohol-polyoxyethylene ether, the flexibility of the concrete repairing agent is superior to that of bisphenol A epoxy resin, and in addition, the concrete repairing agent can be matched with quartz sand and carborundum to be prepared into mortar for use.
Respectively weighing A, B components according to the formula at room temperature, and after uniformly stirring, the process performance indexes of the glue solution are shown in table 1, and the curing performance indexes of the glue solution are shown in table 2:
TABLE 1 comparison of technological Properties of the glue solutions
TABLE 2 index of curing Properties of the glue solution
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 invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. A concrete repairing agent and a preparation method thereof are characterized in that: the repairing agent consists of a component A and a component B in a mass ratio of 1: 1; the component A comprises 66 parts of polymethylene polyphenyl isocyanate, 34 parts of surfactant and 60 parts of defoaming agent in parts by mass; the component B comprises 33 parts of N, N, N, N, -tetra (2-hydroxypropyl) ethylenediamine, 7 parts of polyether polyol, 4 parts of fatty alcohol-polyoxyethylene ether, 55 parts of surfactant and a little pigment.
2. The concrete healant according to claim 1, characterized in that: the surfactant is aromatic solvent oil.
3. The concrete healant according to claim 1, characterized in that: the defoaming agent is a liquid defoaming agent.
4. The concrete healant according to claim 1, characterized in that: and the polyether polyol and the fatty alcohol-polyoxyethylene ether jointly form a composite curing agent in the component B.
5. The concrete healant according to claim 1, characterized in that: the N, N, N, N-tetra (2-hydroxypropyl) ethylenediamine is an accelerator in the component B.
6. the method for producing a concrete repair agent according to any one of claims 1 to 5, wherein: the method comprises the following steps:
(1) putting the polymethylene polyphenyl isocyanate in parts by mass into a reaction kettle, cooling and stabilizing, adding a surfactant and a defoaming agent into the reaction kettle, and uniformly stirring to obtain a component A;
(2) Mixing and stirring the N, N, N, N-tetra (2-hydroxypropyl) ethylenediamine, the polyether polyol, the fatty alcohol-polyoxyethylene ether and the surfactant uniformly to obtain a component B;
(3) And (3) respectively and independently packaging the component A prepared in the step (1) and the component B prepared in the step (2), and uniformly mixing the components on site according to a designed proportion to prepare the perfusion adhesive.
7. The method for producing a repair agent according to claim 6, characterized in that: the cooling stabilization time in the step (1) is 8 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910844749.7A CN110563375A (en) | 2019-09-07 | 2019-09-07 | Concrete repairing agent and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910844749.7A CN110563375A (en) | 2019-09-07 | 2019-09-07 | Concrete repairing agent and preparation method thereof |
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| CN110563375A true CN110563375A (en) | 2019-12-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116285311A (en) * | 2023-01-17 | 2023-06-23 | 北京交通大学 | Novel polyurethane water shutoff grouting material and preparation method thereof |
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| CN103224701A (en) * | 2013-05-09 | 2013-07-31 | 安徽大学 | High-strength low-heat-release mining flame-retardant grouting reinforcement material and preparation method thereof |
| CN103387353A (en) * | 2013-07-27 | 2013-11-13 | 上海市建筑科学研究院(集团)有限公司 | Elastic concrete used for rapidly repairing expansion joint |
| CN104448207A (en) * | 2014-12-25 | 2015-03-25 | 中国铁道科学研究院 | Injecting paste material for administering soil rising of plate-type ballastless track and preparation method and application method thereof |
| CN108219442A (en) * | 2017-11-27 | 2018-06-29 | 广东科技学院 | A kind of high polymer grouting material and preparation method thereof |
| CN109880579A (en) * | 2019-02-28 | 2019-06-14 | 上海富铭密封材料有限公司 | A kind of low temperature resistant high-adhesive-strength polyurethane sealant of two-component and preparation method thereof |
-
2019
- 2019-09-07 CN CN201910844749.7A patent/CN110563375A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103224701A (en) * | 2013-05-09 | 2013-07-31 | 安徽大学 | High-strength low-heat-release mining flame-retardant grouting reinforcement material and preparation method thereof |
| CN103387353A (en) * | 2013-07-27 | 2013-11-13 | 上海市建筑科学研究院(集团)有限公司 | Elastic concrete used for rapidly repairing expansion joint |
| CN104448207A (en) * | 2014-12-25 | 2015-03-25 | 中国铁道科学研究院 | Injecting paste material for administering soil rising of plate-type ballastless track and preparation method and application method thereof |
| CN108219442A (en) * | 2017-11-27 | 2018-06-29 | 广东科技学院 | A kind of high polymer grouting material and preparation method thereof |
| CN109880579A (en) * | 2019-02-28 | 2019-06-14 | 上海富铭密封材料有限公司 | A kind of low temperature resistant high-adhesive-strength polyurethane sealant of two-component and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116285311A (en) * | 2023-01-17 | 2023-06-23 | 北京交通大学 | Novel polyurethane water shutoff grouting material and preparation method thereof |
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Application publication date: 20191213 |
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