CN112920614A - High-temperature-resistant waterproof epoxy asphalt and preparation method thereof - Google Patents
High-temperature-resistant waterproof epoxy asphalt and preparation method thereof Download PDFInfo
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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
- C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
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- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- 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
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- C—CHEMISTRY; METALLURGY
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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/04—Polymer mixtures characterised by other features containing interpenetrating networks
Abstract
The invention discloses a high-temperature resistant waterproof epoxy asphalt and a preparation method thereof, wherein the raw materials of the high-temperature resistant waterproof epoxy asphalt comprise, by weight, 40-50 parts of asphalt, 5-10 parts of concrete, 20-30 parts of bisphenol A epoxy resin, 5-7 parts of higher aliphatic amine, 1-2 parts of acrylonitrile, 0.2-0.4 part of epoxy chloropropane, 3-4 parts of hyperbranched polyester, 1-2 parts of antioxidant, 2-3 parts of filler and 0.1-0.2 part of dispersant, the filler is a mixture of talcum powder, diatomite and mica powder, and the higher aliphatic amine is one or two mixtures of octadecylamine and dodecylamine. According to the application, the bisphenol A type epoxy resin is mixed with the asphalt to form a three-dimensional interpenetrating network structure polymer, so that the adhesion, the tensile strength and the thermal stability of the product can be fundamentally changed, the hyperbranched polyester is added to toughen and modify the asphalt, the problem of poor compatibility can be avoided, and the effect of the tensile strength of the product at a low temperature can be improved.
Description
Technical Field
The invention relates to the technical field of epoxy asphalt, in particular to high-temperature-resistant waterproof epoxy asphalt and a preparation method thereof.
Background
The epoxy asphalt is a mixture modified by using epoxy resin and asphalt, has good ductility and shrinkage performance, and is widely applied to roads, bridges and the like.
Most of common asphalt on the market improves the tensile strength of products by adding an auxiliary agent, but under an environment with extremely low temperature, the expected effect cannot be achieved by adding the auxiliary agent, so the asphalt needs to be modified, the conventional modification is to add rubber, plastic and the like, but the tensile strength of the products is reduced at low temperature due to the large molecular weight and poor compatibility with the asphalt, the curing degrees of different products are different due to different epoxy values of the used epoxy resin, the higher the epoxy value of the epoxy resin, the lower the viscosity, and the lower the tensile strength of the cured products, so the invention of the high temperature resistant waterproof epoxy asphalt and the preparation method thereof is particularly important.
Disclosure of Invention
The invention aims to provide high-temperature-resistant waterproof epoxy asphalt and a preparation method thereof, so as to solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme: the high temperature resistant waterproof epoxy asphalt comprises, by weight, 40-50 parts of asphalt, 5-10 parts of concrete, 20-30 parts of bisphenol A epoxy resin, 5-7 parts of higher aliphatic amine, 1-2 parts of acrylonitrile, 0.2-0.4 part of epoxy chloropropane, 3-4 parts of hyperbranched polyester, 1-2 parts of antioxidant, 2-3 parts of filler and 0.1-0.2 part of dispersant.
Further, the filler is a mixture of talcum powder, diatomite and mica powder.
Further, the epoxy value of the bisphenol a type epoxy resin is 20.
Further, the higher aliphatic amine is one or a mixture of octadecylamine and dodecylamine.
Further, the antioxidant is a mixture of carbon black, 4-methoxy-2, 6-tert-butylphenol, 4-methyl-2, 6-di-tert-butylphenol and phosphoric acid.
Further, the dispersing agent is one or a mixture of more of sodium tripolyphosphate, sodium dodecyl sulfate and sodium tripolyphosphate.
A preparation method of high temperature resistant waterproof epoxy asphalt comprises the following steps,
(1) mixing bisphenol A epoxy resin, epichlorohydrin and isopropanol, stirring, heating, adding alkali liquor, stirring, adding higher aliphatic amine and acrylonitrile, stirring, adding isopropanol during stirring, and heating to obtain a mixture A;
(2) heating the asphalt to be in a molten state, adding the mixture A and the concrete, stirring, adding the hyperbranched polyester and the dispersant after uniformly stirring, adding the antioxidant and the filler after uniformly stirring, and stirring to obtain the waterproof epoxy asphalt.
Further, the concrete steps are as follows,
(1) mixing bisphenol A epoxy resin, epoxy chloropropane and isopropanol, stirring, heating, adding 10mol/L sodium hydroxide at the temperature of 75 ℃, stirring, reacting for 2.5-3h, adding higher aliphatic amine and acrylonitrile, stirring, adding isopropanol during stirring, heating at the temperature of 50-60 ℃ to obtain a mixture A;
epoxy value of the epoxy resin that common epoxy resin pitch used on the market is not of uniform size, lead to the degree of curing of different products to differ strongly and weakly, epoxy value of epoxy resin is higher, viscosity is lower, the tensile strength of the product after the solidification is lower, this application has used bisphenol A type epoxy resin, bisphenol A type epoxy resin's epoxy value is 20, have more excellent pliability and cohesiveness, and this application has handled bisphenol A type epoxy resin, epichlorohydrin and solvent isopropanol have been added, can generate bisphenol A type epoxy resin diglycidyl ether, bisphenol A type epoxy resin diglycidyl ether can increase the tensile strength of product as the binder.
When the bisphenol A type epoxy resin diglycidyl ether is prepared, the solvent isopropanol still exists in the system, the solvent is not heated and evaporated to remove the solvent, the solvent is reused, the isopropanol is used as a catalyst in the cyanoethylation reaction, the concentration of the added isopropanol needs to be controlled to be 10 percent, the content of the isopropanol changes to influence the reaction process when the bisphenol A type epoxy resin diglycidyl ether is prepared, the isopropanol needs to be added additionally to ensure the normal reaction, the utilization rate of the isopropanol is improved, the isopropanol needs to be added according to the mass ratio of 1:3 of the isopropanol to the higher aliphatic amine during the conventional use, but the isopropanol is already added as an organic solvent during the preparation of the bisphenol A type epoxy resin diglycidyl ether and does not need to be added according to the mass ratio of 1:3, but the normal reaction can be ensured by adding the components according to the mass ratio of 1:5, the consumption of isopropanol is reduced, and the cost is further saved.
The application adds the filler, the main component of the filler is the mixture of talcum powder, diatomite and mica powder, which can increase the heat resistance of the asphalt, reduce the temperature sensitivity of the asphalt and reduce the using amount of the asphalt, the application also adds the concrete, which can improve the tensile strength and the waterproof capability of the product, and a large amount of the filler and the concrete can improve the performance of the product in all aspects, but can also cause the decrease of the adhesive force among epoxy resin, the asphalt, the concrete and the filler, and the product is loose and can not be formed in serious cases, the application uses the high-grade fatty amine and the acrylonitrile for reaction, adds the isopropanol as the catalyst for cyanoethylation, can improve the adhesive degree among the raw materials of the product, avoids the loose, and the high-grade fatty amine used in the application is dodecylamine and octadecylamine, and has high saturated primary amine, the hydrophobic property of the molecular long chain can improve the waterproof property of the product.
(2) Heating the asphalt to 150-180 ℃ to be in a molten state, adding the mixture A and the concrete, stirring, adding the mixture A and the concrete at 160-170 ℃, stirring, adding the hyperbranched polyester and the dispersant after uniformly stirring, adding the antioxidant and the filler after uniformly stirring, and stirring to obtain the waterproof epoxy asphalt.
Further, in the step (2), the concrete is crushed, and the particle size is 0.15-0.2 mm.
Further, in the step (1), the concentration of the added isopropanol is 10%, the isopropanol is required to be added after the higher aliphatic amine and the acrylonitrile are added, and the mass ratio of the added isopropanol to the higher aliphatic amine is 1: 5.
Compared with the prior art, the invention has the following beneficial effects: according to the preparation method, the bisphenol A type epoxy resin is mixed with the asphalt, a three-dimensional interpenetrating network structure polymer can be formed, and the adhesion, tensile strength and thermal stability of the product can be fundamentally changed.
Most of common asphalt on the market improves the tensile strength of products by adding additives, but under the environment with extremely low temperature, the desired effect cannot be achieved by adding the additives, so the asphalt needs to be modified, the conventional modification is to add rubber, plastic and the like, but the tensile strength of the products is reduced at low temperature because the molecular weight of the asphalt is large and the compatibility with the asphalt is poor, hyperbranched polyester is added in the asphalt, the asphalt is toughened and modified, the problem of poor compatibility can be avoided, and the tensile strength of the products at low temperature can be improved.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The high-temperature-resistant waterproof epoxy asphalt comprises, by weight, 40 parts of asphalt, 5 parts of concrete, 20 parts of bisphenol A epoxy resin, 5 parts of higher aliphatic amine, 1 part of acrylonitrile, 0.2 part of epoxy chloropropane, 3 parts of hyperbranched polyester, 1 part of antioxidant, 2 parts of filler and 0.1 part of dispersant.
The filler is a mixture of talcum powder, diatomite and mica powder.
The epoxy value of the bisphenol A epoxy resin is 20.
The higher fatty amine is a mixture of octadecylamine and dodecylamine.
The antioxidant is a mixture of carbon black, 4-methoxy-2, 6-tert-butylphenol, 4-methyl-2, 6-di-tert-butylphenol and phosphoric acid.
The dispersing agent is a mixture of sodium tripolyphosphate, sodium dodecyl sulfate and sodium tripolyphosphate.
A preparation method of high-temperature-resistant waterproof epoxy asphalt, which comprises the following steps,
(1) mixing bisphenol A epoxy resin, epichlorohydrin and isopropanol, stirring, heating, adding 10mol/L sodium hydroxide at the temperature of 75 ℃, stirring, reacting for 2.5 hours, adding higher aliphatic amine and acrylonitrile, stirring, adding 10% isopropanol during stirring, heating at the temperature of 50 ℃ to obtain a mixture A, wherein the mass ratio of the isopropanol to the higher aliphatic amine is 1: 5;
(2) crushing concrete, wherein the particle size is 0.2 mm;
(3) heating asphalt to 150 ℃ to be in a molten state, adding the mixture A and the concrete, stirring at 160 ℃, adding the hyperbranched polyester and the dispersant after uniformly stirring, adding the antioxidant and the filler after uniformly stirring, and stirring to obtain the waterproof epoxy asphalt.
Example 2
The high-temperature-resistant waterproof epoxy asphalt comprises, by weight, 45 parts of asphalt, 8 parts of concrete, 25 parts of bisphenol A epoxy resin, 6 parts of higher aliphatic amine, 1 part of acrylonitrile, 0.3 part of epoxy chloropropane, 3 parts of hyperbranched polyester, 1 part of antioxidant, 2 parts of filler and 0.1 part of dispersant.
The filler is a mixture of talcum powder, diatomite and mica powder.
The epoxy value of the bisphenol A epoxy resin is 20.
The higher aliphatic amine is octadecylamine.
The antioxidant is a mixture of carbon black, 4-methoxy-2, 6-tert-butylphenol, 4-methyl-2, 6-di-tert-butylphenol and phosphoric acid.
The dispersing agent is a mixture of sodium tripolyphosphate and sodium tripolyphosphate.
A preparation method of high-temperature-resistant waterproof epoxy asphalt, which comprises the following steps,
(1) mixing bisphenol A epoxy resin, epichlorohydrin and isopropanol, stirring, heating, adding 10mol/L sodium hydroxide at the temperature of 75 ℃, stirring, reacting for 2.5 hours, adding higher aliphatic amine and acrylonitrile, stirring, adding 10% isopropanol during stirring, heating at the temperature of 55 ℃ to obtain a mixture A, wherein the mass ratio of the isopropanol to the higher aliphatic amine is 1: 5;
(2) crushing concrete, wherein the particle size is 0.2 mm;
(3) heating asphalt to 170 ℃ to be in a molten state, adding the mixture A and the concrete, stirring at 165 ℃, adding the hyperbranched polyester and the dispersant after uniformly stirring, adding the antioxidant and the filler after uniformly stirring, and stirring to obtain the waterproof epoxy asphalt.
Example 3
The high-temperature-resistant waterproof epoxy asphalt comprises, by weight, 50 parts of asphalt, 10 parts of concrete, 30 parts of bisphenol A epoxy resin, 7 parts of higher aliphatic amine, 2 parts of acrylonitrile, 0.4 part of epoxy chloropropane, 4 parts of hyperbranched polyester, 2 parts of antioxidant, 3 parts of filler and 0.2 part of dispersant.
The filler is a mixture of talcum powder, diatomite and mica powder.
The epoxy value of the bisphenol A epoxy resin is 20.
The higher fatty amine is a mixture of octadecylamine and dodecylamine.
The antioxidant is a mixture of carbon black, 4-methoxy-2, 6-tert-butylphenol, 4-methyl-2, 6-di-tert-butylphenol and phosphoric acid.
The dispersing agent is a mixture of sodium tripolyphosphate, sodium dodecyl sulfate and sodium tripolyphosphate.
A preparation method of high-temperature-resistant waterproof epoxy asphalt, which comprises the following steps,
(1) mixing bisphenol A epoxy resin, epichlorohydrin and isopropanol, stirring, heating, adding 10mol/L sodium hydroxide at the temperature of 75 ℃, stirring, reacting for 3 hours, adding higher aliphatic amine and acrylonitrile, stirring, adding 10% isopropanol during stirring, heating at the temperature of 60 ℃ to obtain a mixture A, wherein the mass ratio of the isopropanol to the higher aliphatic amine is 1: 5;
(2) crushing concrete, wherein the particle size is 0.2 mm;
(3) heating asphalt to 180 ℃ to be in a molten state, adding the mixture A and the concrete, stirring, adding the hyperbranched polyester and the dispersing agent after uniformly stirring, adding the antioxidant and the filler after uniformly stirring, and stirring to obtain the waterproof epoxy asphalt.
Comparative example 1
The high-temperature-resistant waterproof epoxy asphalt comprises, by weight, 50 parts of asphalt, 10 parts of concrete, 30 parts of bisphenol A epoxy resin, 7 parts of higher aliphatic amine, 2 parts of acrylonitrile, 0.4 part of epoxy chloropropane, 4 parts of hyperbranched polyester, 2 parts of antioxidant, 3 parts of filler and 0.2 part of dispersant.
The filler is a mixture of talcum powder, diatomite and mica powder.
The epoxy value of the bisphenol A epoxy resin is 20.
The higher fatty amine is a mixture of octadecylamine and dodecylamine.
The antioxidant is a mixture of carbon black, 4-methoxy-2, 6-tert-butylphenol, 4-methyl-2, 6-di-tert-butylphenol and phosphoric acid.
The dispersing agent is a mixture of sodium tripolyphosphate, sodium dodecyl sulfate and sodium tripolyphosphate.
A preparation method of high-temperature-resistant waterproof epoxy asphalt, which comprises the following steps,
(1) mixing bisphenol A epoxy resin, epichlorohydrin and isopropanol, stirring, heating, adding 10mol/L sodium hydroxide at the temperature of 75 ℃, stirring, reacting for 3 hours, heating at the temperature of 85 ℃, adding higher aliphatic amine and acrylonitrile, stirring, adding 10% isopropanol during stirring, heating at the temperature of 60 ℃ to obtain a mixture A, wherein the mass ratio of the isopropanol to the higher aliphatic amine is 1: 3;
(2) crushing concrete, wherein the particle size is 0.2 mm;
(3) heating asphalt to 180 ℃ to be in a molten state, adding the mixture A and the concrete, stirring, adding the hyperbranched polyester and the dispersing agent after uniformly stirring, adding the antioxidant and the filler after uniformly stirring, and stirring to obtain the waterproof epoxy asphalt.
Comparative example 2
The high-temperature-resistant waterproof epoxy asphalt comprises, by weight, 50 parts of asphalt, 10 parts of concrete, 30 parts of bisphenol A epoxy resin, 7 parts of aliphatic diamine, 2 parts of acrylonitrile, 0.4 part of epoxy chloropropane, 4 parts of hyperbranched polyester, 2 parts of antioxidant, 3 parts of filler and 0.2 part of dispersant.
The filler is a mixture of talcum powder, diatomite and mica powder.
The epoxy value of the bisphenol A epoxy resin is 20.
The aliphatic diamine is a mixture of ethylenediamine and dodecanediamine.
The antioxidant is a mixture of carbon black, 4-methoxy-2, 6-tert-butylphenol, 4-methyl-2, 6-di-tert-butylphenol and phosphoric acid.
The dispersing agent is a mixture of sodium tripolyphosphate, sodium dodecyl sulfate and sodium tripolyphosphate.
A preparation method of high-temperature-resistant waterproof epoxy asphalt, which comprises the following steps,
(1) mixing bisphenol A epoxy resin, epichlorohydrin and isopropanol, stirring, heating, adding 10mol/L sodium hydroxide at the temperature of 75 ℃, stirring, reacting for 3 hours, adding aliphatic diamine and acrylonitrile, stirring, adding 10% isopropanol during stirring, heating at the temperature of 60 ℃ to obtain a mixture A, wherein the mass ratio of the isopropanol to the higher aliphatic amine is 1: 5;
(2) crushing concrete, wherein the particle size is 0.2 mm;
(3) heating asphalt to 180 ℃ to be in a molten state, adding the mixture A and the concrete, stirring, adding the hyperbranched polyester and the dispersing agent after uniformly stirring, adding the antioxidant and the filler after uniformly stirring, and stirring to obtain the waterproof epoxy asphalt.
Comparative example 3
The high-temperature-resistant waterproof epoxy asphalt comprises, by weight, 50 parts of asphalt, 10 parts of concrete, 30 parts of bisphenol A epoxy resin, 7 parts of higher aliphatic amine, 2 parts of acrylonitrile, 0.4 part of epoxy chloropropane, 2 parts of an antioxidant, 3 parts of a filler and 0.2 part of a dispersant.
The filler is a mixture of talcum powder, diatomite and mica powder.
The epoxy value of the bisphenol A epoxy resin is 20.
The higher fatty amine is a mixture of octadecylamine and dodecylamine.
The antioxidant is a mixture of carbon black, 4-methoxy-2, 6-tert-butylphenol, 4-methyl-2, 6-di-tert-butylphenol and phosphoric acid.
The dispersing agent is a mixture of sodium tripolyphosphate, sodium dodecyl sulfate and sodium tripolyphosphate.
A preparation method of high-temperature-resistant waterproof epoxy asphalt, which comprises the following steps,
(1) mixing bisphenol A epoxy resin, epichlorohydrin and isopropanol, stirring, heating, adding 10mol/L sodium hydroxide at the temperature of 75 ℃, stirring, reacting for 3 hours, adding higher aliphatic amine and acrylonitrile, stirring, adding 10% isopropanol during stirring, heating at the temperature of 60 ℃ to obtain a mixture A, wherein the mass ratio of the isopropanol to the higher aliphatic amine is 1: 5;
(2) crushing concrete, wherein the particle size is 0.2 mm;
(3) heating asphalt to 180 ℃ to be in a molten state, adding the mixture A and the concrete, stirring at 170 ℃, adding the dispersing agent after uniformly stirring, adding the antioxidant and the filler after uniformly stirring, and stirring to obtain the waterproof epoxy asphalt.
Comparative example 4
The high-temperature-resistant waterproof epoxy asphalt comprises, by weight, 50 parts of asphalt, 10 parts of concrete, 30 parts of bisphenol A epoxy resin, 7 parts of higher aliphatic amine, 2 parts of acrylonitrile, 0.4 part of epoxy chloropropane, 4 parts of hyperbranched polyester, 2 parts of antioxidant, 3 parts of filler and 0.2 part of dispersant.
The filler is a mixture of talcum powder, diatomite and mica powder.
The epoxy value of the bisphenol A epoxy resin is 20.
The higher fatty amine is a mixture of octadecylamine and dodecylamine.
The antioxidant is a mixture of carbon black, 4-methoxy-2, 6-tert-butylphenol, 4-methyl-2, 6-di-tert-butylphenol and phosphoric acid.
The dispersing agent is a mixture of sodium tripolyphosphate, sodium dodecyl sulfate and sodium tripolyphosphate.
A preparation method of high-temperature-resistant waterproof epoxy asphalt, which comprises the following steps,
(1) mixing bisphenol A epoxy resin, epoxy chloropropane and isopropanol, stirring, heating, adding 10mol/L sodium hydroxide at the temperature of 75 ℃, stirring, reacting for 3 hours, adding higher aliphatic amine and acrylonitrile, stirring, adding 1.36% acetic acid during stirring, heating, and heating to 60 ℃ to obtain a mixture A;
(2) crushing concrete, wherein the particle size is 0.2 mm;
(3) heating asphalt to 180 ℃ to be in a molten state, adding the mixture A and the concrete, stirring, adding the hyperbranched polyester and the dispersing agent after uniformly stirring, adding the antioxidant and the filler after uniformly stirring, and stirring to obtain the waterproof epoxy asphalt.
Experiment of
Taking example 3 as a contrast, a comparative example 1, a comparative example 2 and a comparative example 3 are provided, wherein the organic solvent isopropanol is removed by heating before adding the higher aliphatic amine and the acrylonitrile in the comparative example 1, the organic solvent is added according to the mass ratio of 1:3, the aliphatic diamine is ethylenediamine and dodecanediamine in the comparative example 2, the hyperbranched polyester modification is not carried out in the comparative example 3, the isopropanol is not used in the comparative example 4, and the acetic acid is changed.
Tensile strength and adhesive strength tests were carried out on example 1, example 2, example 3, comparative example 1, comparative example 2, comparative example 3, and comparative example 4 in accordance with GB/T2567-2008, and as a result,
| experimental group | Tensile strength MPa | Adhesive strength |
| Example 1 | 7.1 | 6.2 |
| Example 2 | 7.3 | 6.3 |
| Example 3 | 7.5 | 6.5 |
| Comparative example 1 | 7.2 | 6.4 |
| Comparative example 2 | 7.6 | 6.7 |
| Comparative example 3 | 5.4 | 4.1 |
| Comparative example 4 | 7.5 | 6.4 |
Watch 1
The waterproof performance test of 0.3MPa was conducted on example 1, example 2, example 3, comparative example 1, comparative example 2, and comparative example 4, and the results were as follows,
table two the freeze resistance tests of example 1, example 2, example 3, comparative example 3 and comparative example 4 were carried out, and the results were as follows,
watch III
Data analysis
In comparative example 1 in which isopropanol, an organic solvent, was removed by heating before adding higher aliphatic amine and acrylonitrile, and an organic solvent was added in a mass ratio of 1:3, the tensile strength, adhesive strength, water resistance and freezing resistance of the obtained sample were as excellent as those of examples 1, 2 and 3, but in comparative example 1 in which a large amount of isopropanol was added as compared with examples 1, 2 and 3, the components increased.
The aliphatic diamine used in comparative example 2 is ethylenediamine or dodecanediamine, and the tensile strength and the adhesive strength are enhanced as compared with those of examples 1, 2 and 3 because primary monoamines are used in examples 1, 2 and 3, but the effect of comparative example 2 on the water-repellent performance test is slightly lower than that of examples 1, 2 and 3.
The absence of modification with hyperbranched polyesters in comparative example 3 leads to lower tensile and cohesive strengths compared to examples 1, 2 and 3 and also to poorer performance in the freeze resistance test compared to examples 1, 2 and 3.
In comparative example 4, isopropanol is not used as a catalyst, the tensile strength and the bonding strength of the product obtained by using acetic acid instead are not greatly different from those of examples 1, 2 and 3, and the waterproof performance and the anti-freezing performance of the product are still not greatly different from those of examples 1, 2 and 3, which shows that the isopropanol is used in the examples 1, 2 and 3 and has the same use effect as the acetic acid, but in the comparative example 4, not only the solvent is removed by evaporation, but also an additional instrument is required to test the addition of the acetic acid, and the acetic acid is more used in diamine, and the product is relatively poor in the performance of the cyanoethylation of monoamine.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the 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 high-temperature-resistant waterproof epoxy asphalt is characterized in that: the waterproof epoxy asphalt comprises, by weight, 40-50 parts of asphalt, 5-10 parts of concrete, 20-30 parts of bisphenol A epoxy resin, 5-7 parts of higher aliphatic amine, 1-2 parts of acrylonitrile, 0.2-0.4 part of epoxy chloropropane, 3-4 parts of hyperbranched polyester, 1-2 parts of antioxidant, 2-3 parts of filler and 0.1-0.2 part of dispersant.
2. The high-temperature-resistant waterproof epoxy asphalt according to claim 1, characterized in that: the filler is a mixture of talcum powder, diatomite and mica powder.
3. The high-temperature-resistant waterproof epoxy asphalt according to claim 1, characterized in that: the epoxy value of the bisphenol A epoxy resin is 20.
4. The high-temperature-resistant waterproof epoxy asphalt according to claim 1, characterized in that: the higher fatty amine is one or a mixture of octadecylamine and dodecylamine.
5. The high-temperature-resistant waterproof epoxy asphalt according to claim 1, characterized in that: the antioxidant is a mixture of carbon black, 4-methoxy-2, 6-tert-butylphenol, 4-methyl-2, 6-di-tert-butylphenol and phosphoric acid.
6. The high-temperature-resistant waterproof epoxy asphalt according to claim 1, characterized in that: the dispersing agent is one or a mixture of more of sodium tripolyphosphate, sodium dodecyl sulfate and sodium tripolyphosphate.
7. A preparation method of high-temperature-resistant waterproof epoxy asphalt is characterized by comprising the following steps: the steps are as follows,
(1) mixing bisphenol A epoxy resin, epichlorohydrin and isopropanol, stirring, heating, adding alkali liquor, stirring, adding higher aliphatic amine and acrylonitrile, stirring, adding isopropanol during stirring, and heating to obtain a mixture A;
(2) heating the asphalt to be in a molten state, adding the mixture A and the concrete, stirring, adding the hyperbranched polyester and the dispersant after uniformly stirring, adding the antioxidant and the filler after uniformly stirring, and stirring to obtain the waterproof epoxy asphalt.
8. The preparation method of the high-temperature-resistant waterproof epoxy asphalt according to claim 7, characterized by comprising the following steps: the specific steps are as follows,
(1) mixing bisphenol A epoxy resin, epoxy chloropropane and isopropanol, stirring, heating, adding 10mol/L sodium hydroxide at the temperature of 75 ℃, stirring, reacting for 2.5-3h, adding higher aliphatic amine and acrylonitrile, stirring, adding isopropanol during stirring, heating at the temperature of 50-60 ℃ to obtain a mixture A;
(2) heating the asphalt to 150-180 ℃ to be in a molten state, adding the mixture A and the concrete, stirring, adding the mixture A and the concrete at 160-170 ℃, stirring, adding the hyperbranched polyester and the dispersant after uniformly stirring, adding the antioxidant and the filler after uniformly stirring, and stirring to obtain the waterproof epoxy asphalt.
9. The preparation method of the high-temperature-resistant waterproof epoxy asphalt according to claim 7, characterized by comprising the following steps: in the step (2), the concrete is crushed, and the particle size is 0.15-0.2 mm.
10. The preparation method of the high-temperature-resistant waterproof epoxy asphalt according to claim 7, characterized by comprising the following steps: in the step (1), the concentration of the added isopropanol is 10%, the isopropanol is required to be added after the higher aliphatic amine and the acrylonitrile are added, and the mass ratio of the added isopropanol to the higher aliphatic amine is 1: 5.
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| WO2023162399A1 (en) * | 2022-02-28 | 2023-08-31 | 住友化学株式会社 | Asphalt composition and asphalt pavement material composition |
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