CN117004237A - High-performance asphalt odor-removing and deodorizing additive composition, and preparation and application thereof - Google Patents
High-performance asphalt odor-removing and deodorizing additive composition, and preparation and application thereof Download PDFInfo
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- CN117004237A CN117004237A CN202310844207.6A CN202310844207A CN117004237A CN 117004237 A CN117004237 A CN 117004237A CN 202310844207 A CN202310844207 A CN 202310844207A CN 117004237 A CN117004237 A CN 117004237A
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- 239000000203 mixture Substances 0.000 title claims abstract description 80
- 230000001877 deodorizing effect Effects 0.000 title claims abstract description 63
- 239000000654 additive Substances 0.000 title claims abstract description 61
- 230000000996 additive effect Effects 0.000 title claims abstract description 61
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
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- 235000014113 dietary fatty acids Nutrition 0.000 claims abstract description 16
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- SQIFACVGCPWBQZ-UHFFFAOYSA-N delta-terpineol Natural products CC(C)(O)C1CCC(=C)CC1 SQIFACVGCPWBQZ-UHFFFAOYSA-N 0.000 claims description 12
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- GAWWVVGZMLGEIW-GNNYBVKZSA-L zinc ricinoleate Chemical compound [Zn+2].CCCCCC[C@@H](O)C\C=C/CCCCCCCC([O-])=O.CCCCCC[C@@H](O)C\C=C/CCCCCCCC([O-])=O GAWWVVGZMLGEIW-GNNYBVKZSA-L 0.000 claims description 9
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- 239000003607 modifier Substances 0.000 claims description 7
- DSSYKIVIOFKYAU-XCBNKYQSSA-N (R)-camphor Chemical class C1C[C@@]2(C)C(=O)C[C@@H]1C2(C)C DSSYKIVIOFKYAU-XCBNKYQSSA-N 0.000 claims description 6
- 125000004432 carbon atom Chemical group C* 0.000 claims description 5
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- 238000004519 manufacturing process Methods 0.000 claims description 2
- BTURAGWYSMTVOW-UHFFFAOYSA-M sodium dodecanoate Chemical compound [Na+].CCCCCCCCCCCC([O-])=O BTURAGWYSMTVOW-UHFFFAOYSA-M 0.000 claims description 2
- 229940082004 sodium laurate Drugs 0.000 claims description 2
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 2
- 229940057977 zinc stearate Drugs 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 7
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- 238000003756 stirring Methods 0.000 description 14
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Classifications
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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
- C08L91/00—Compositions of oils, fats or waxes; Compositions of derivatives thereof
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/05—Alcohols; Metal alcoholates
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/07—Aldehydes; Ketones
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
- C08K5/098—Metal salts of carboxylic acids
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/10—Esters; Ether-esters
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/10—Esters; Ether-esters
- C08K5/101—Esters; Ether-esters of monocarboxylic acids
-
- 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
-
- 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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- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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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)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The application discloses a high-performance asphalt odor-removing and deodorizing additive composition, and preparation and application thereof, and belongs to the technical field of materials. The raw materials of the asphalt odor-removal and deodorization additive composition comprise: fatty acid esters, alkaline earth metal salts of hydroxylated carboxylic acids, cycloolefins, aromatic aldehydes, natural volatile oils, rosin derivatives and camphors. The components have synergistic effect in the deodorizing process, so that malodor components in asphalt can be removed more effectively, and a better deodorizing effect is achieved; meanwhile, the usage amount of the components is smaller, so that the preparation cost can be reduced. The asphalt odor-removing and deodorizing additive composition is matched with a compatilizer for use, and can effectively reduce odor in the asphalt paving and construction process under the condition of not affecting the asphalt performance. The additive composition has the advantages of simple and environment-friendly raw materials and low cost, and provides a new method for developing and applying the odor-free environment-friendly asphalt.
Description
Technical Field
The application relates to the technical field of materials, in particular to a high-performance asphalt odor-removing and deodorizing additive composition, and preparation and application thereof.
Background
Asphalt mainly consists of hydrocarbon and nonmetallic derivatives thereof, is a thick semi-solid complex mixture, and is widely applied to the aspects of water resistance, paint, plastics, rubber, roads and the like due to excellent performances such as viscosity, ductility, temperature change and the like. Because the melting point of asphalt is higher, the asphalt must be heated first in the use process, and the components of the asphalt are very complex, asphalt smoke can be generated in the heating process, a large amount of energy is also required to be consumed, and a large amount of carbon dioxide, nitrogen oxides, sulfur oxides and other pollutants are generated, so that the asphalt is an important source of atmospheric pollution.
One long term negative consequence of using hot mix asphalt is that it produces volatile materials such as aromatics, sulfides and mercaptans that typically have a strong, long lasting and unpleasant odor. These odors are often considered unpleasant by those handling asphalt, residents living in the vicinity of the area in which the asphalt is being made or is being paved, and those who are generally in close proximity to the asphalt. The intensity of the unpleasant odours associated with bitumen increases with increasing temperature. Thus, for example, in the case of industrial applications, odor problems associated with bitumen can be serious.
Most people in modern society fully recognize the bad smell accompanying road, driveways and parking lots. When using asphalt in roofing applications, such as linoleum, coil roofing, and combination roofing, it is common to first heat the asphalt in a vessel, such as a gas-fired roofing kettle. Bitumen compositions used in plastic modification are also typically heated to high temperatures in mixing and processing polymer formulations. Volatile materials with strong and unpleasant odors, such as aromatic hydrocarbons, sulfides and mercaptans, are typically emitted into the atmosphere as the temperature of the asphalt increases. The odors emitted are not only olfactory malodour, but they may also be irritating to workers in the vicinity of the container. In extreme cases, malodorous fumes from asphalt can cause headache, irritation of the mucous membranes of the eyes, nose and throat.
Conventional odor treatment compositions act as deodorants or masking agents by masking undesirable odors with another odor. However, this technique is not effective in masking strong odors. In addition, masking is not effective in reducing the concentration of malodorous volatiles. The asphalt smell not only brings serious discomfort to the workers and surrounding residents in the construction site, but also can pollute the environment. The strong bitumen smell may lead to a reduced air quality, negatively affecting the ecological environment and the biodiversity. Therefore, the asphalt odor is treated not only to improve the quality of life of people, but also to protect the ecological environment and biodiversity. In the prior art, some asphalt deodorants have been developed, but these deodorants still have limitations in terms of cost, performance and environmental protection. For example, some existing deodorants may result in reduced asphalt performance, while other deodorants may negatively impact the environment and human health. Therefore, research and development of a deodorant which can effectively remove asphalt odor without affecting asphalt performance is of great importance.
In short, the smell of asphalt is not ignored, and the asphalt has negative effects on human health, production efficiency and environment. Against this background, it has become an urgent need to develop an effective deodorant which does not affect asphalt properties. The deodorant has the characteristics of low cost, high performance, environmental protection and the like, so that the deodorant can be widely popularized and applied in practical application. Only in this way, the effective treatment of asphalt smell can be truly realized, the life quality of people is improved, and the ecological environment is protected.
Disclosure of Invention
The application aims to provide a high-performance asphalt odor-removing and deodorizing additive composition, and preparation and application thereof, so as to reduce the problem of smoke hazard in the asphalt construction process. The application discloses an asphalt deodorizing additive composition, which comprises the following raw materials: higher fatty acid methyl esters having 12 to 18 carbon atoms, alkaline earth metal salts of hydroxylated carboxylic acids, cycloolefin compounds, aromatic aldehydes compounds, natural volatile oils, rosin derivatives and camphor compounds. The asphalt deodorizing additive composition can effectively reduce the odor of asphalt during paving and construction without affecting the asphalt performance, and the effective components in the asphalt deodorizing additive composition can deodorize asphalt through various mechanisms, including physical adsorption, chemical complexation, hydrogen bonding, odor masking and the like, and effectively reduce the odor of asphalt through the mutual synergistic effect of various substances.
In order to achieve the above object, the present application provides the following solutions:
one of the technical schemes of the application is as follows: an asphalt deodorizing additive composition comprises fatty acid ester, alkaline earth metal salt of hydroxylated carboxylic acid, cycloolefin compound, aromatic aldehyde compound, natural volatile oil, rosin derivative and camphora compound.
Further, the fatty acid ester is higher fatty acid methyl ester with 12-18 carbon atoms; the alkaline earth metal salt of the hydroxylated carboxylic acid is zinc ricinoleate, zinc stearate or sodium laurate.
Further, the cycloolefin compound is d-limonene; the aromatic aldehyde compound is alpha-cinnamaldehyde; the natural volatile oil is eucalyptus citriodora oil; the rosin derivative is terpineol; the camphor compound is camphor oil or camphor powder.
Further, the mass ratio of the fatty acid ester to the alkaline earth metal salt of the hydroxylated carboxylic acid is (3.1-4.6) 1, the fatty acid ester and the alkaline earth metal salt of the hydroxylated carboxylic acid constitute the component a; the mass ratio of the cycloolefin compound to the aromatic aldehyde compound to the natural volatile oil to the rosin derivative to the camphor compound is (0.03-0.1): 0.01:0.03:2:1, and the cycloolefin compound to the aromatic aldehyde compound to the natural volatile oil to the rosin derivative to the camphor compound forms a component b; the mass ratio of the component a to the component b is (20-40): 1.
Further, the asphalt deodorizing additive composition is in the form of a fluid, and contains slightly soluble particles, wherein the slightly soluble particles are mainly compounds in the component a, and because the compounds in the component a are relatively strong in polarity and cannot be completely dissolved in the component b, some fine slightly soluble particles exist in the composition.
Further, preferably, the raw materials of the asphalt deodorizing additive composition include: higher fatty acid methyl ester, zinc ricinoleate, d-limonene, alpha-cinnamaldehyde, terpineol, eucalyptus citriodora oil and camphor powder.
The second technical scheme of the application is as follows: the preparation method of the asphalt odor removal and deodorization additive composition comprises the following steps:
weighing the fatty acid ester and alkaline earth metal salt of the hydroxylated carboxylic acid, and uniformly mixing to obtain a component a;
weighing cycloolefin compounds, aromatic aldehyde compounds, natural volatile oil, rosin derivatives and camphor compounds, and uniformly mixing to obtain a component b;
mixing the component a and the component b to obtain the asphalt odor-removing and deodorizing additive composition.
Further, when the component b is prepared, the cycloolefin compound, the aromatic aldehyde compound, the natural volatile oil and the rosin derivative are mixed in sequence, stirred uniformly at room temperature, then the camphor compound is added, and the temperature is raised to 40 ℃ and stirred uniformly.
The reason why the component a and the component b are firstly prepared and then mixed is that the solubility of the fatty acid ester in the component a and the alkaline earth metal salt of the hydroxylated carboxylic acid in the natural volatile oil in the component b is different, and the fatty acid ester and the alkaline earth metal salt of the hydroxylated carboxylic acid are easily dissolved unevenly in the natural volatile oil due to the fact that all the components are directly mixed together, so that the component a is firstly mixed evenly and then the component b is added, and the insoluble phenomenon in the composition can be effectively relieved.
The third technical scheme of the application: the application of the asphalt deodorizing additive composition in preparing modified asphalt.
The technical scheme of the application is as follows: a preparation method of modified asphalt comprises the following steps:
adding the asphalt deodorizing additive composition, the compatilizer and the modifier into asphalt, and uniformly mixing and dispersing to obtain the modified asphalt.
Further, the compatilizer is vegetable oil ester.
Further, the vegetable oil ester is formed by mixing soybean oil methyl ester and seaweed oil according to the mass ratio of (10-16): 1.
Further, the compatibilizing agent is in liquid form.
Further, the bitumen taste-reducing and deodorizing additive composition is used in combination with the compatibilizer, which is also considered as one of the components of the bitumen taste-reducing and deodorizing additive composition, which is denoted as FE in combination with the compatibilizer.
Further, the modifier is SBS (styrene-butadiene-styrene block copolymer), and the modified asphalt is FE/SBS composite modified asphalt.
Further, the blending amount of the asphalt odor-removing and deodorizing additive composition is 0.5-5% of the total mass of asphalt, the blending amount of the compatilizer is 5-15% of the total mass of asphalt, and the blending amount of the modifier is 5% of the total mass of asphalt.
Further, the asphalt deodorizing additive composition is preferably incorporated in an amount of 0.5% by mass of the total mass of asphalt.
Further, the mixing and dispersing are carried out at 125-135 ℃.
Further, the asphalt was dried at 135 ℃ for 2 hours prior to adding the asphalt odor removal additive composition, compatibilizer, and modifier.
The fifth technical scheme of the application is as follows: a modified asphalt prepared according to the above preparation method.
The reaction principle of the application:
the raw materials of the asphalt deodorizing additive composition of the present application include fatty acid esters (higher fatty acid methyl esters having 12 to 18 carbon atoms), alkaline earth metal salts of hydroxylated carboxylic acids, cycloolefin compounds, aromatic aldehydes compounds, natural volatile oils, rosin derivatives, and camphor compounds. The higher fatty acid methyl ester has stronger surface activity, can form a complex with Volatile Organic Compounds (VOCs) in asphalt to reduce the volatility and smell of the complex, and simultaneously has a certain solvent effect to reduce the viscosity of the asphalt so as to reduce the release of harmful substances in the asphalt; alkaline earth metal salts of hydroxylated carboxylic acids (zinc ricinoleate, etc.) can form a complex with acidic VOCs in asphalt, so that the volatility and smell of the complex are reduced, and meanwhile, the alkaline earth metal salts of hydroxylated carboxylic acids (zinc ricinoleate, etc.) have good dispersibility, so that the stability of asphalt is improved; the rosin derivative (terpineol) has stronger polarity, can form hydrogen bonds with VOCs in asphalt, so that the volatility and smell of the asphalt are reduced, and meanwhile, the rosin derivative (terpineol) also has a certain oxidation resistance, so that the oxidation and aging process of the asphalt can be delayed, and the generation of harmful substances is reduced; the cycloolefin compound (d-limonene) is a natural volatile organic compound, and can act synergistically with the aromatic aldehyde compound (α -cinnamaldehyde) to reduce malodor in asphalt by masking. Meanwhile, the aromatic aldehyde compound (alpha-cinnamaldehyde) has a certain antibacterial effect; natural volatile oil (eucalyptus citriodora oil) contains abundant volatile organic compounds, can interact with VOCs in asphalt, and reduces the concentration and smell of the volatile oil; the camphor-based compounds can form hydrogen bonds or van der waals interactions with VOCs in asphalt, thereby reducing its volatility and odor.
The asphalt deodorizing additive composition of the present application deodorizes asphalt through a variety of mechanisms including physical adsorption, chemical complexation, hydrogen bonding, masking, etc. These substances act synergistically to effectively reduce the concentration of VOCs in asphalt, thereby reducing the odor of asphalt. Meanwhile, the asphalt deodorizing additive composition is matched with a compatilizer (a mixture of soybean oil methyl ester and seaweed oil), wherein the soybean oil methyl ester in the compatilizer is used as a bio-based solvent, has better compatibility with asphalt, and can assist other substances to be better compatible with the asphalt; the compatibilizer can help the deodorant component to disperse better in the asphalt, avoiding affecting asphalt properties.
In addition, asphalt is composed of four main components of saturated components, aromatic components, colloid and asphaltene, the asphalt odor-removing and deodorizing additive composition contains several nonpolar substances, the main components of the compatilizer are nonpolar oil, and the addition of the substances can change the proportion of oil in the asphalt to the asphalt components, so that the dispersion of a high molecular modifier (SBS) in the asphalt is improved, a network structure is formed, and the overall performance of the asphalt is slightly improved while the influence of the addition of the asphalt odor-removing and deodorizing additive composition on the performance of the asphalt is avoided.
The application discloses the following technical effects:
(1) The asphalt deodorizing additive composition consists of various natural and environment-friendly components such as fatty acid ester, alkaline earth metal salt of hydroxylated carboxylic acid, cycloolefin compounds, aromatic aldehyde compounds, natural volatile oil, rosin derivatives, camphor compounds and the like, and can effectively reduce odor in asphalt and asphalt-containing compositions when being added into asphalt or asphalt compositions. The components have synergistic effect in the deodorizing process, so that malodor components in asphalt can be removed more effectively, and a better deodorizing effect is achieved, specifically: the fatty acid ester, the alkaline earth metal salt of the hydroxylated carboxylic acid and the rosin derivative have stronger surface activity and strong polarity, and can form a complex with Volatile Organic Compounds (VOCs) in asphalt and form hydrogen bonding with the VOCs at the same time, so that the volatility and the smell of the asphalt are reduced; in addition, cycloolefin compounds, aromatic aldehyde compounds and natural volatile oils have strong aromaticity and abundant volatility, and malodor odor in asphalt can be reduced by masking effect. Meanwhile, the usage amount of the components is small, so that the preparation cost can be reduced, and the application has higher economic benefit. In addition, since these components have less influence on the performance of asphalt, the asphalt deodorizing additive composition of the present application does not reduce the use performance of asphalt in practical applications, thereby ensuring efficient application of asphalt in road paving and other engineering projects.
(2) The asphalt deodorizing additive composition has strong environmental protection performance. Compared with the traditional odor treatment method, the asphalt deodorizing additive composition not only covers the malodorous odor, but also can reduce the emission of volatile organic compounds in asphalt, thereby solving the problem of asphalt odor at the source. The asphalt deodorizing additive composition provided by the application is used for treating asphalt, so that the emission of volatile organic compounds of asphalt can be effectively reduced, and the harm to the environment and human health can be reduced. In the practical application process, the asphalt deodorizing additive composition can be widely applied to various asphalt and asphalt-containing compositions, improves the air quality of asphalt construction sites, reduces the uncomfortable feeling of surrounding residents, and protects ecological environment and biological diversity. Therefore, the application has higher social benefit and environmental benefit. Provides a new method for developing and applying the odor-free environment-friendly asphalt.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a graph showing the complex shear modulus G (10 Hz) of the modified asphalt of the present application according to the application example 1, the comparative application example 1 and the comparative application example 6, versus the change of temperature;
FIG. 2 is a graph showing the change in storage modulus G' (10 Hz) with temperature of the modified asphalt of the present application obtained in application example 1, comparative application example 1 and comparative application example 6;
FIG. 3 is a graph showing the change in loss modulus G "(10 Hz) with temperature for the modified asphalt of the application of application example 1, comparative application example 1 and comparative application example 6;
FIG. 4 is a GC-MS total gas chromatogram of the modified asphalt of application example 1 of the present application and comparative application example 1.
Detailed Description
Various exemplary embodiments of the application will now be described in detail, which should not be considered as limiting the application, but rather as more detailed descriptions of certain aspects, features and embodiments of the application.
It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. In addition, for numerical ranges in this disclosure, it is understood that each intermediate value between the upper and lower limits of the ranges is also specifically disclosed. Every smaller range between any stated value or stated range, and any other stated value or intermediate value within the stated range, is also encompassed within the application. The upper and lower limits of these smaller ranges may independently be included or excluded in the range.
Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. Although only preferred methods and materials are described herein, any methods and materials similar or equivalent to those described herein can be used in the practice or testing of the present application. All documents mentioned in this specification are incorporated by reference for the purpose of disclosing and describing the methods and/or materials associated with the documents. In case of conflict with any incorporated document, the present specification will control.
It will be apparent to those skilled in the art that various modifications and variations can be made in the specific embodiments of the application described herein without departing from the scope or spirit of the application. Other embodiments will be apparent to those skilled in the art from consideration of the specification of the present application. The specification and examples of the present application are exemplary only.
As used herein, the terms "comprising," "including," "having," "containing," and the like are intended to be inclusive and mean an inclusion, but not limited to.
The raw materials used in the following examples and comparative examples were all common commercial products, and the number of carbon atoms of the higher fatty acid methyl ester used was 18.
Example 1
(1) Weighing 50g of soybean oil methyl ester and 5g of seaweed oil, and uniformly stirring and mixing at room temperature to obtain a compatilizer for later use;
(2) Weighing 10g of higher fatty acid methyl ester and 3.2g of zinc ricinoleate, and stirring and mixing uniformly at room temperature to obtain a component a for later use; weighing 0.3g of d-limonene, 0.1g of alpha-cinnamaldehyde, 0.3g of terpineol, 20g of eucalyptus citriodora oil and 10g of camphor powder, mixing the d-limonene, the alpha-cinnamaldehyde, the terpineol and the eucalyptus citriodora oil in sequence, stirring for 5min at room temperature, adding the camphor powder, heating to 40 ℃, and stirring for 10min until the camphor powder is completely dispersed to obtain a component b;
(3) Weighing 10g of the component a and 0.5g of the component b in the step (2), and uniformly mixing at room temperature to obtain the asphalt deodorizing additive composition (called as deodorant for short) for standby.
The deodorant and the compatilizer are matched for use, and are combined together to be marked as FE.
Example 2
(1) Weighing 75g of soybean oil methyl ester and 5.77g of seaweed oil, and uniformly stirring and mixing at room temperature to obtain a compatilizer for later use;
(2) Weighing 15g of higher fatty acid methyl ester and 3.75g of zinc ricinoleate, and stirring and mixing uniformly at room temperature to obtain a component a for later use; weighing 0.5g of d-limonene, 0.1g of alpha-cinnamaldehyde, 0.3g of terpineol, 20g of eucalyptus citriodora oil and 10g of camphor powder, mixing the d-limonene, the alpha-cinnamaldehyde, the terpineol and the eucalyptus citriodora oil in sequence, stirring for 5min at room temperature, adding the camphor powder, heating to 40 ℃, and stirring for 10min until the camphor powder is completely dispersed to obtain a component b;
(3) Weighing 15g of the component a and 0.5g of the component b in the step (2), and uniformly mixing at room temperature to obtain the asphalt deodorizing additive composition (called as deodorant for short) for standby.
The deodorant and the compatilizer are matched for use, and are combined together to be marked as FE.
Example 3
(1) Weighing 100g of soybean oil methyl ester and 6.25g of seaweed oil, and uniformly stirring and mixing at room temperature to obtain a compatilizer for later use;
(2) Weighing 20g of higher fatty acid methyl ester, 4.35g of zinc ricinoleate, and stirring and mixing uniformly at room temperature to obtain a component a for later use; weighing 1g of d-limonene, 0.1g of alpha-cinnamaldehyde, 0.3g of terpineol, 20g of eucalyptus citriodora oil and 10g of camphor powder, sequentially mixing the d-limonene, the alpha-cinnamaldehyde, the terpineol and the eucalyptus citriodora oil, stirring for 5min at room temperature, adding the camphor powder, heating to 40 ℃, stirring for 10min until the camphor powder is completely dispersed, and obtaining a component b;
(3) Weighing 20g of the component a and 0.5g of the component b in the step (2), and uniformly mixing at room temperature to obtain the asphalt deodorizing additive composition (called as deodorant for short) for standby.
The deodorant and the compatilizer are matched for use, and are combined together to be marked as FE.
Comparative example 1
The only difference from example 1 is that zinc ricinoleate in the a-component is omitted.
Comparative example 2
The only difference from example 1 is that d-limonene in the b-component is omitted.
Comparative example 3
The only difference from example 1 is that the α -cinnamaldehyde in the b-component is omitted.
Comparative example 4
The only difference from example 1 is that terpineol in component b is omitted.
Application example 1
200g of SK-70A asphalt is weighed, dried in a baking oven at 135 ℃ for 2 hours to remove redundant moisture, the asphalt deodorization additive composition and compatilizer obtained in the example 1 and SBS are added into asphalt, the constant temperature at 125 ℃ is kept, and the asphalt is dispersed for 1 hour under a high-speed dispersing machine at 400rpm, so that the FE/SBS composite modified asphalt is obtained; wherein the mixing amount of the compatilizer is 5% of the total mass of the asphalt (mass before the asphalt is dehydrated), the mixing amount of the asphalt deodorizing and deodorizing additive composition is 0.5% of the total mass of the asphalt, and the mixing amount of the SBS is 5% of the total mass of the asphalt.
Application example 2
200g of SK-70A asphalt is weighed, dried in a baking oven at 135 ℃ for 2 hours to remove redundant moisture, the asphalt deodorization additive composition and compatilizer obtained in the example 1 and SBS are added into asphalt, the constant temperature of 130 ℃ is kept, and the asphalt is dispersed for 1 hour under a high-speed dispersing machine at 400rpm, so that the FE/SBS composite modified asphalt is obtained; wherein the mixing amount of the compatilizer is 10% of the total mass of the asphalt (mass before the asphalt is dehydrated), the mixing amount of the asphalt deodorizing additive composition is 2.5% of the total mass of the asphalt, and the mixing amount of the SBS is 5% of the total mass of the asphalt.
Application example 3
200g of SK-70A asphalt is weighed, dried in a baking oven at 135 ℃ for 2 hours to remove redundant moisture, the asphalt deodorization additive composition and compatilizer component obtained in the example 1 and SBS are added into asphalt, the constant temperature of 135 ℃ is kept, and the asphalt is dispersed for 1 hour under a high-speed dispersing machine at 400rpm, so that the FE/SBS composite modified asphalt is obtained; wherein the mixing amount of the compatilizer is 15% of the total mass of the asphalt (mass before the asphalt is dehydrated), the mixing amount of the asphalt deodorizing additive composition is 5% of the total mass of the asphalt, and the mixing amount of the SBS is 5% of the total mass of the asphalt.
Comparative application example 1
The only difference from example 1 is that the use of the compatibilizer and asphalt deodorizing additive composition was omitted and only SBS was added to prepare SBS-modified asphalt.
Comparative application example 2
The only difference from example 1 is that the compatibilizing agent and the asphalt deodorizing additive composition prepared in comparative example 1 were added to asphalt.
Comparative application example 3
The only difference from example 1 is that the compatibilizing agent and the asphalt deodorizing additive composition prepared in comparative example 2 were added to asphalt.
Comparative application example 4
The only difference from example 1 is that the compatibilizing agent and the asphalt deodorizing additive composition prepared in comparative example 3 were added to asphalt.
Comparative application example 5
The only difference from example 1 is that the compatibilizing agent and the asphalt deodorizing additive composition prepared in comparative example 4 were added to asphalt.
Comparative application example 6
The only difference from example 1 is that the use of compatibilizing agents is omitted.
Effect verification
1. Dynamic shear rheological test (DSR)
DSR test was performed on the modified asphalt prepared in application example 1 and comparative application examples 1 and 6, and the specific method was as follows: 1.0g of asphalt was poured in the center of a test plate having a diameter of 25mm, the test plate was moved to squeeze the asphalt between the two test plates, a test piece trimmer was heated, the peripheral excess asphalt was corrected, and then the gap was adjusted to a test gap of 1 mm. At temperature equilibrium, the device will automatically test at a frequency of 10rad/s and a selected stress target value, recording and calculation being accomplished by the data acquisition system.
Test results: FIG. 1 is a graph comparing the complex shear modulus G (10 Hz) of modified asphalt prepared by application example 1 (FE/SBS composite modified asphalt), comparative application example 1 (SBS modified asphalt) and comparative application example 6 (composite modified asphalt with a compatibilizer removed) with temperature, and it is understood from FIG. 1 that, at the same temperature, the complex shear modulus G of the SBS modified asphalt with FE added (FE/SBS composite modified asphalt) is greater than the complex shear modulus G of the SBS modified asphalt without FE added and is greater than the composite modified asphalt with a compatibilizer removed, which indicates that the addition of FE can improve the deformation resistance of the SBS modified asphalt, and the improvement in performance is related to the addition of the compatibilizer; FIG. 2 is a graph showing the change of the storage modulus G '(10 Hz) of the modified asphalt prepared in application example 1, comparative application example 1 and comparative application example 6 with temperature, and it is understood from FIG. 2 that, at the same temperature, the G' of the FE/SBS composite modified asphalt is larger than that of the SBS modified asphalt and is larger than that of the composite modified asphalt excluding the compatilizer, which indicates that the addition of FE can improve the elastic performance of the SBS modified asphalt, and the improvement in performance is related to the addition of the compatilizer; FIG. 3 is a graph showing the change of the loss modulus G "(10 Hz) with temperature of the modified asphalt prepared in application example 1, comparative application example 1 and comparative application example 6, and it can be seen from FIG. 3 that, at the same temperature, the loss modulus G″ of the FE/SBS composite modified asphalt is higher than that of the SBS modified asphalt and is greater than that of the composite modified asphalt excluding the compatibilizer, which indicates that the addition of FE can effectively enhance the viscoelastic properties of the SBS modified asphalt, and that the improvement in such properties is related to the addition of the compatibilizer.
2. Flue gas collection and flue gas component test
The modified asphalt prepared in application example 1 and comparative application examples 1-5 is subjected to flue gas collection test, and components in the flue gas are tested and analyzed, and the specific method is as follows: 80.0g of asphalt is taken in a customized split three-neck flask, the asphalt is heated to the warm mixing temperature of 180-200 ℃, and is stirred for 1h at the rotating speed of 250rpm, nitrogen is used as carrier gas, and the gas generated during the warm mixing of the asphalt is introduced into 25ml of benzene solution through a designed pipeline, so that the collected organic components of the asphalt flue gas are finally obtained. After diluting the obtained asphalt fume liquid by 100 times, the asphalt fume component was analyzed by using a gas chromatography mass spectrometer (GC-MS). In addition, a tin foil gas sampling bag with the volume of 1L is adopted to collect inorganic flue gas after asphalt is absorbed by benzene in three times of stirring for 20min, 40min and 60min, and then a flue gas analyzer is used for testing the concentration of main malodorous gas hydrogen sulfide in the inorganic gas at three time points, and then the average value is taken as a final test result.
Test results: FIG. 4 is a GC-MS total gas chromatogram of the modified asphalt prepared in application example 1 and comparative application example 1, and the larger the peak value at the same position of the retention time is under the same control of the rest test conditions, which shows that the higher the component content is, the most organic components in the flue gas generated by the SBS modified asphalt and the highest content are shown in FIG. 4, and the quantity and concentration of the organic components in the flue gas of the FE/SBS composite modified asphalt are greatly reduced. The different retention times in the columns represent different chemical compositions of the substances, the detected compounds were qualitatively verified according to GC-MS total gas chromatography combined with National Institute of Standards and Technology (NIST) fragment library (NIST 17), the concentrations of the components in the flue gas were compared relatively, and table 1 was obtained in combination with instrument reports. As can be seen from Table 1, the total of 40 organic components in the flue gas generated by the SBS modified asphalt (comparative application example 1) is 40, while the total of 12 organic components in the FE/SBS composite modified asphalt (application example 1) is reduced by 70% compared with the SBS modified asphalt, which means that the FE asphalt deodorizing and deodorizing additive effectively reduces the concentration of VOCs in the asphalt, and has good deodorizing and smoke suppressing effects. As is clear from the comparison of the data of application examples 1 to 3, the optimum blending amount of the asphalt deodorizing additive composition was 0.5%, and the deodorizing and smoke suppressing effects were rather deteriorated by further increasing the blending amount of the composition. This is because the composition itself contains some volatile organic compounds, so that too large an amount of the volatile organic compounds may adversely deteriorate the effect of suppressing VOCs, and when the amount of the volatile organic compounds is increased to a certain extent, the amount and concentration of the VOCs may be even larger than those of SBS modified asphalt to which the composition is not added.
TABLE 1
Table 2 shows the results of the tests of the concentration of hydrogen sulfide in the inorganic fumes of application example 1 and comparative application examples 1-5, table 2 shows that the addition of FE significantly reduces the concentration of hydrogen sulfide in the SBS modified asphalt fumes from 178.0mg/m 3 Down to 36.5mg/m 3 The reduction in amplitude was 79.49%. The FE can reduce organic components in the SBS modified asphalt smoke and simultaneously effectively reduce malodorous gas in the asphalt smoke.
TABLE 2
3. Flue gas collection and test of solid particle generation in flue gas
The modified asphalt prepared in application example 1 and comparative application example 1 is subjected to flue gas collection test and the generation amount of solid particles in flue gas is tested, and the specific method is as follows: 80.0g of asphalt is taken in a customized split three-neck flask, heated to a warm mix temperature of 180-200 ℃ and stirred for 1h at a speed of 250 rpm. During stirring, a self-designed glass fiber sleeve adsorption device is used, macromolecular substances in asphalt smoke are adsorbed at the outlet of the three-neck flask, the attaching time is 1h, and the weight change of the glass fiber sleeve after the smoke is adsorbed is compared, namely the macromolecular substance content in the FE/SBS composite modified asphalt and the macromolecular substance content in SBS modified asphalt smoke are compared. The glass fiber sleeve can be used after being subjected to high-temperature treatment to keep the quality stable.
Test results: table 3 shows the mass change of the glass fiber sleeves before and after the collection of the asphalt fume of application example 1 and comparative application example 1, and it is clear from table 3 that the asphalt deodorizing additive (FE) can reduce the amount of asphalt fume solid particles generated. When the FE is doped, the smoke particles of the FE/SBS composite modified asphalt are reduced by 68% compared with the SBS modified asphalt, which shows that the FE can improve the thermal stability of the SBS modified asphalt, so that the large molecular particles in the smoke generated under the high temperature condition are fewer.
TABLE 3 Table 3
4. High temperature performance, water stability and rutting performance test
(1) Sample preparation
And preparing asphalt mixture by adopting an AC-13 dense proportion by taking FE/SBS composite modified asphalt with certain quality, wherein the aggregate is diabase. According to the standard content of T0709-2011, preparing asphalt mixture into 8 (phi 101.6+/-0.2 mm) X (63.5+/-1.3 mm) cylindrical test pieces by using a standard compaction method, wherein 4 test pieces are immersed in a constant-temperature water tank at 60+/-1 ℃ for 30min and then taken out for standby, and the other 4 test pieces are immersed in the constant-temperature water tank at 60+/-1 ℃ for 48h and then taken out for standby. In addition, a plate test piece of 300mm×300mm×50mm was prepared using a wheel mill method for standby. The FE/SBS composite modified asphalt prepared in application example 1, and the SBS modified asphalt prepared in comparative application example 1 and the composite modified asphalt with the compatilizer removed prepared in comparative application example 6 are used as raw materials in the preparation process of the samples, respectively, to prepare 3 groups of samples.
(2) Test method
The 3 groups of samples prepared were subjected to standard marshall stability, immersed marshall stability and rutting tests. The specific method comprises the following steps: testing the prepared marshall and immersed marshall test pieces by adopting an automatic marshall tester, and recording data acquired by a computer; placing a rut board test piece and a test die on a test bed of a rut tester, wherein the test wheel is arranged at the central part of the test piece, the running direction of the test wheel is consistent with the rolling direction of the test piece, starting a rut deformation automatic recorder, the test time is 1h, recording a deformation curve and calculating the dynamic stability of the rut test.
(3) Test results
Table 4 shows the data of Marshall stability, water immersion Marshall stability and rutting test dynamic stability of the samples prepared from the modified asphalt prepared in application example 1, comparative application example 1 and comparative application example 6, and as shown in Table 4, the test results show that the Marshall stability test of the FE/SBS composite modified asphalt is higher than national standard (6 kN), and the Marshall stability, water immersion Marshall stability and rutting test dynamic stability of the FE/SBS composite modified asphalt are higher than those of the SBS asphalt, wherein the water immersion residual strength ratio is improved by 1.34%, which means that the high temperature performance, water stability and rutting performance of the FE/SBS composite modified asphalt are higher than those of the SBS asphalt, and the road requirement can be met. The principle of the FE for improving the above performance of the composite modified asphalt is as follows: the higher fatty acid methyl ester in the asphalt odor removal and deodorization additive composition can change the oil content ratio in asphalt, so that the dispersion of SBS and the development of a network structure are enhanced, and the network structure formed by SBS in asphalt is a main reason for improving the high-temperature performance and rutting performance of the modified asphalt. In addition, the natural volatile oil in the composition also has strong non-polarity, and exudation can form an oil film on the surface layer of the mixture during water stability test, so that the overall water stability is enhanced. In conclusion, the components in the composition improve the high-temperature performance, the water stability and the rutting performance of the composite modified asphalt through synergistic effect, and the Marshall stability and the soaking Marshall stability of the composite modified asphalt are improved.
TABLE 4 Table 4
The above embodiments are only illustrative of the preferred embodiments of the present application and are not intended to limit the scope of the present application, and various modifications and improvements made by those skilled in the art to the technical solutions of the present application should fall within the protection scope defined by the claims of the present application without departing from the design spirit of the present application.
Claims (10)
1. An asphalt deodorizing additive composition, characterized in that the raw materials comprise: fatty acid esters, alkaline earth metal salts of hydroxylated carboxylic acids, cycloolefins, aromatic aldehydes, natural volatile oils, rosin derivatives and camphors.
2. The asphalt deodorizing and deodorizing additive composition as set forth in claim 1, wherein said fatty acid ester is a higher fatty acid methyl ester having 12 to 18 carbon atoms; the alkaline earth metal salt of the hydroxylated carboxylic acid is zinc ricinoleate, zinc stearate or sodium laurate.
3. The asphalt deodorizing and deodorizing additive composition as set forth in claim 1, wherein said cycloolefin compound is d-limonene; the aromatic aldehyde compound is alpha-cinnamaldehyde; the natural volatile oil is eucalyptus citriodora oil; the rosin derivative is terpineol; the camphor compound is camphor oil or camphor powder.
4. An asphalt deodorizing additive composition according to claim 1, wherein the mass ratio of said fatty acid ester to alkaline earth metal salt of a hydroxylated carboxylic acid is (3.1-4.6): 1, the fatty acid ester and alkaline earth metal salt of a hydroxylated carboxylic acid constituting component a; the mass ratio of the cycloolefin compound to the aromatic aldehyde compound to the natural volatile oil to the rosin derivative to the camphor compound is (0.03-0.1): 0.01:0.03:2:1, and the cycloolefin compound to the aromatic aldehyde compound to the natural volatile oil to the rosin derivative to the camphor compound forms a component b; the mass ratio of the component a to the component b is (20-40): 1.
5. A process for preparing an asphalt deodorizing additive composition according to any one of claims 1 to 4, comprising the steps of:
weighing the fatty acid ester and alkaline earth metal salt of the hydroxylated carboxylic acid, and uniformly mixing to obtain a component a;
weighing cycloolefin compounds, aromatic aldehyde compounds, natural volatile oil, rosin derivatives and camphor compounds, and uniformly mixing to obtain a component b;
mixing the component a and the component b to obtain the asphalt odor-removing and deodorizing additive composition.
6. Use of an asphalt deodorizing additive composition according to any one of claims 1 to 4 for the preparation of modified asphalt.
7. The preparation method of the modified asphalt is characterized by comprising the following steps of:
adding the asphalt deodorizing additive composition, the compatilizer and the modifier in any one of claims 1-4 into asphalt, and uniformly mixing and dispersing to obtain the modified asphalt.
8. The method of claim 7, wherein the compatibilizer is a vegetable oil ester.
9. The method of claim 7, wherein the asphalt deodorizing additive composition is incorporated in an amount of 0.5 to 5% by weight of the total asphalt, the compatibilizer is incorporated in an amount of 5 to 15% by weight of the total asphalt, and the modifier is incorporated in an amount of 5% by weight of the total asphalt.
10. A modified asphalt prepared by the preparation method of any one of claims 7 to 9.
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| US20040220295A1 (en) * | 2003-05-02 | 2004-11-04 | Charles Timcik | Additives and methods for reducing odor |
| US20090314184A1 (en) * | 2008-06-18 | 2009-12-24 | Owens Corning Intellectual Capital, Llc | Low Odor Asphalt Compositions and Low Odor Asphalt Produced Therefrom |
| US20120204760A1 (en) * | 2011-02-15 | 2012-08-16 | Flow Polymers, Llc | Deodorized asphalt additive composition |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040220295A1 (en) * | 2003-05-02 | 2004-11-04 | Charles Timcik | Additives and methods for reducing odor |
| US20090314184A1 (en) * | 2008-06-18 | 2009-12-24 | Owens Corning Intellectual Capital, Llc | Low Odor Asphalt Compositions and Low Odor Asphalt Produced Therefrom |
| US20120204760A1 (en) * | 2011-02-15 | 2012-08-16 | Flow Polymers, Llc | Deodorized asphalt additive composition |
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