CN113698778A - Preparation method of modified environment-friendly asphalt - Google Patents
Preparation method of modified environment-friendly asphalt Download PDFInfo
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- CN113698778A CN113698778A CN202011305346.4A CN202011305346A CN113698778A CN 113698778 A CN113698778 A CN 113698778A CN 202011305346 A CN202011305346 A CN 202011305346A CN 113698778 A CN113698778 A CN 113698778A
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- 239000010426 asphalt Substances 0.000 title claims abstract description 55
- 238000002360 preparation method Methods 0.000 title claims abstract description 30
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical class O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 91
- 238000002156 mixing Methods 0.000 claims abstract description 75
- 238000003756 stirring Methods 0.000 claims abstract description 40
- 239000000463 material Substances 0.000 claims abstract description 37
- IANQTJSKSUMEQM-UHFFFAOYSA-N 1-benzofuran Chemical compound C1=CC=C2OC=CC2=C1 IANQTJSKSUMEQM-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229920001400 block copolymer Polymers 0.000 claims abstract description 17
- -1 aldehyde compound Chemical class 0.000 claims abstract description 16
- 229920001971 elastomer Polymers 0.000 claims abstract description 15
- 239000000843 powder Substances 0.000 claims abstract description 15
- 239000002699 waste material Substances 0.000 claims abstract description 15
- 239000011347 resin Substances 0.000 claims abstract description 9
- 229920005989 resin Polymers 0.000 claims abstract description 9
- 239000011261 inert gas Substances 0.000 claims abstract description 3
- 239000000203 mixture Substances 0.000 claims description 37
- 239000000377 silicon dioxide Substances 0.000 claims description 21
- 235000012239 silicon dioxide Nutrition 0.000 claims description 21
- 239000000440 bentonite Substances 0.000 claims description 19
- 229910000278 bentonite Inorganic materials 0.000 claims description 19
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 19
- 239000000295 fuel oil Substances 0.000 claims description 14
- AFVFQIVMOAPDHO-UHFFFAOYSA-N Methanesulfonic acid Chemical compound CS(O)(=O)=O AFVFQIVMOAPDHO-UHFFFAOYSA-N 0.000 claims description 12
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 12
- 125000003118 aryl group Chemical group 0.000 claims description 12
- 239000011280 coal tar Substances 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 239000003921 oil Substances 0.000 claims description 11
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical compound C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 claims description 10
- 239000011294 coal tar pitch Substances 0.000 claims description 10
- 238000004458 analytical method Methods 0.000 claims description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 8
- RDOXTESZEPMUJZ-UHFFFAOYSA-N anisole Chemical compound COC1=CC=CC=C1 RDOXTESZEPMUJZ-UHFFFAOYSA-N 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 229920000468 styrene butadiene styrene block copolymer Polymers 0.000 claims description 8
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 7
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 claims description 6
- 238000001354 calcination Methods 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 6
- JRBPAEWTRLWTQC-UHFFFAOYSA-N dodecylamine Chemical compound CCCCCCCCCCCCN JRBPAEWTRLWTQC-UHFFFAOYSA-N 0.000 claims description 6
- 229940098779 methanesulfonic acid Drugs 0.000 claims description 6
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- 229910021589 Copper(I) bromide Inorganic materials 0.000 claims description 4
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 4
- HUMNYLRZRPPJDN-UHFFFAOYSA-N benzaldehyde Chemical compound O=CC1=CC=CC=C1 HUMNYLRZRPPJDN-UHFFFAOYSA-N 0.000 claims description 4
- NKNDPYCGAZPOFS-UHFFFAOYSA-M copper(i) bromide Chemical compound Br[Cu] NKNDPYCGAZPOFS-UHFFFAOYSA-M 0.000 claims description 4
- UZKWTJUDCOPSNM-UHFFFAOYSA-N methoxybenzene Substances CCCCOC=C UZKWTJUDCOPSNM-UHFFFAOYSA-N 0.000 claims description 4
- BNXXLUYQVWEFLC-UHFFFAOYSA-N oxiran-2-ylmethyl 2-bromo-2-methylpropanoate Chemical compound CC(C)(Br)C(=O)OCC1CO1 BNXXLUYQVWEFLC-UHFFFAOYSA-N 0.000 claims description 4
- UKODFQOELJFMII-UHFFFAOYSA-N pentamethyldiethylenetriamine Chemical compound CN(C)CCN(C)CCN(C)C UKODFQOELJFMII-UHFFFAOYSA-N 0.000 claims description 4
- SMQUZDBALVYZAC-UHFFFAOYSA-N salicylaldehyde Chemical compound OC1=CC=CC=C1C=O SMQUZDBALVYZAC-UHFFFAOYSA-N 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000004939 coking Methods 0.000 claims description 3
- KJPRLNWUNMBNBZ-QPJJXVBHSA-N (E)-cinnamaldehyde Chemical compound O=C\C=C\C1=CC=CC=C1 KJPRLNWUNMBNBZ-QPJJXVBHSA-N 0.000 claims description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 claims description 2
- 229930040373 Paraformaldehyde Natural products 0.000 claims description 2
- SRSXLGNVWSONIS-UHFFFAOYSA-N benzenesulfonic acid Chemical compound OS(=O)(=O)C1=CC=CC=C1 SRSXLGNVWSONIS-UHFFFAOYSA-N 0.000 claims description 2
- 229940092714 benzenesulfonic acid Drugs 0.000 claims description 2
- 229940117916 cinnamic aldehyde Drugs 0.000 claims description 2
- KJPRLNWUNMBNBZ-UHFFFAOYSA-N cinnamic aldehyde Natural products O=CC=CC1=CC=CC=C1 KJPRLNWUNMBNBZ-UHFFFAOYSA-N 0.000 claims description 2
- 238000010276 construction Methods 0.000 claims description 2
- CCIVGXIOQKPBKL-UHFFFAOYSA-N ethanesulfonic acid Chemical compound CCS(O)(=O)=O CCIVGXIOQKPBKL-UHFFFAOYSA-N 0.000 claims description 2
- LNOPIUAQISRISI-UHFFFAOYSA-N n'-hydroxy-2-propan-2-ylsulfonylethanimidamide Chemical compound CC(C)S(=O)(=O)CC(N)=NO LNOPIUAQISRISI-UHFFFAOYSA-N 0.000 claims description 2
- FXLOVSHXALFLKQ-UHFFFAOYSA-N p-tolualdehyde Chemical compound CC1=CC=C(C=O)C=C1 FXLOVSHXALFLKQ-UHFFFAOYSA-N 0.000 claims description 2
- QNGNSVIICDLXHT-UHFFFAOYSA-N para-ethylbenzaldehyde Natural products CCC1=CC=C(C=O)C=C1 QNGNSVIICDLXHT-UHFFFAOYSA-N 0.000 claims description 2
- 229920002866 paraformaldehyde Polymers 0.000 claims description 2
- 239000011295 pitch Substances 0.000 claims description 2
- 238000000197 pyrolysis Methods 0.000 claims description 2
- KUCOHFSKRZZVRO-UHFFFAOYSA-N terephthalaldehyde Chemical compound O=CC1=CC=C(C=O)C=C1 KUCOHFSKRZZVRO-UHFFFAOYSA-N 0.000 claims description 2
- 239000003245 coal Substances 0.000 claims 1
- 230000007613 environmental effect Effects 0.000 abstract description 6
- 239000000126 substance Substances 0.000 abstract description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 12
- 238000012360 testing method Methods 0.000 description 9
- FMMWHPNWAFZXNH-UHFFFAOYSA-N Benz[a]pyrene Chemical compound C1=C2C3=CC=CC=C3C=C(C=C3)C2=C2C3=CC=CC2=C1 FMMWHPNWAFZXNH-UHFFFAOYSA-N 0.000 description 5
- 230000000711 cancerogenic effect Effects 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 231100000315 carcinogenic Toxicity 0.000 description 4
- 125000005575 polycyclic aromatic hydrocarbon group Chemical group 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 206010007269 Carcinogenicity Diseases 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 231100000357 carcinogen Toxicity 0.000 description 1
- 239000003183 carcinogenic agent Substances 0.000 description 1
- 231100000260 carcinogenicity Toxicity 0.000 description 1
- 230000007670 carcinogenicity Effects 0.000 description 1
- 239000011300 coal pitch Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000005087 graphitization Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002715 modification method Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229910021426 porous silicon Inorganic materials 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
- 238000005292 vacuum distillation Methods 0.000 description 1
Classifications
-
- 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
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a preparation method of modified environment-friendly asphalt, and relates to the technical field of asphalt materials. Firstly, mixing a block copolymer and modified silicon dioxide to obtain a modified block copolymer, then mixing a base material and waste rubber powder, adding the modified block copolymer and coumarone resin, stirring and reacting to obtain a blank, finally, mixing the blank and an aldehyde compound, adding an accelerant, and stirring and reacting under the condition of inert gas to obtain the modified environment-friendly asphalt. The modified environment-friendly asphalt prepared by the invention has excellent low-temperature crack resistance, less release amount of harmful substances and meets the requirement of environmental protection.
Description
Technical Field
The invention relates to the technical field of asphalt materials, in particular to a preparation method of modified environment-friendly asphalt.
Background
The coal tar pitch is the residue of coal tar after distillation and extraction of fractions (light oil, phenol oil, naphthalene oil, wash oil, anthracene oil and the like), is a thermoplastic material, has unique strong bonding capacity, carbon-rich low ash, excellent compatibility and affinity with solid carbonaceous materials, higher coking residual carbon value, easy graphitization of carbonized products, good infiltration and infiltration, low cost and easy acquisition, and is widely applied to industries such as aluminum smelting, steel making, carbon industry, refractory materials, building materials, road building and the like. Coal tar pitch contains more carcinogenic polycyclic aromatic hydrocarbon, particularly strong carcinogenic benzopyrene, which seriously harms human health and pollutes the environment, so the coal tar pitch is restricted in Europe in the nineties of the twentieth century in view of the requirement of environmental protection.
Since coal tar is found to be carcinogenic by Cook doctor in 1933, polycyclic aromatic hydrocarbons with 4-6 rings are confirmed to have different carcinogenicity, 15 polycyclic aromatic hydrocarbons are listed as carcinogenic aromatic hydrocarbons by the United states environmental protection agency, the emission control concentration of benzopyrene (BaP) which is the most important carcinogen in the polycyclic aromatic hydrocarbons is specified, Germany has the most strict regulation on benzopyrene (BaP) contained in coal tar, the allowable amount of BaP in technical products is not more than 50ppm, and the BaP content in coal tar is generally 1.5-2.5% (equivalent to 15000-25000 ppm), so that a plurality of applications of coal tar are practically cancelled, the strict requirements on environmental protection are met, and the prevention and treatment of coal tar pollution are urgent. At present, the method for reducing benzopyrene (BaP) in coal pitch mainly comprises the following steps: polymer modification, ozone-containing air oxidation, vacuum distillation, and ultraviolet irradiation. The invention provides a compound modification method to prepare environment-friendly asphalt.
Disclosure of Invention
The invention aims to provide a preparation method of modified environment-friendly asphalt, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the preparation method of the modified environment-friendly asphalt is characterized by mainly comprising the following preparation steps:
(1) mixing the block copolymer and the modified silicon dioxide in an internal mixer, mixing, and discharging to obtain a modified block copolymer;
(2) mixing a base material and waste rubber powder, adding the modified block copolymer obtained in the step (1) and coumarone resin, and stirring to react to obtain a blank;
(3) mixing the blank obtained in the step (2) with an aldehyde compound, adding an accelerant, and stirring and reacting under the condition of inert gas to obtain the modified environment-friendly asphalt;
(4) and (4) carrying out index analysis on the modified environment-friendly asphalt obtained in the step (3).
As optimization, the preparation method of the modified environment-friendly asphalt mainly comprises the following preparation steps:
(1) mixing a styrene-butadiene-styrene block copolymer and modified silicon dioxide according to the mass ratio of 20: 1-40: 1, mixing the materials in an internal mixer, mixing for 10-20 min at the temperature of 150-170 ℃ and the rotating speed of 60-80 r/min, and discharging to obtain a modified block copolymer;
(2) mixing a base material and waste rubber powder according to a mass ratio of 50: 1-60: 1, adding the modified block copolymer obtained in the step (1) with the mass of 0.05-0.12 time of that of the base material and coumarone resin with the mass of 0.01-0.05 time of that of the base material into a mixture of the base material and the waste rubber powder, and stirring and reacting for 2 hours at the temperature of 170-200 ℃ to obtain a blank;
(3) mixing the blank obtained in the step (2) with an aldehyde compound according to the mass ratio of 20: 1-40: 1, mixing the raw materials in a reaction kettle, adding an accelerant which is 0.01-0.02 times of the mass of the blank into the reaction kettle, introducing nitrogen into the reaction kettle at a speed of 50-200 mL/min, and stirring and reacting for 5-10 hours at the temperature of 120-16 ℃ to obtain the modified environment-friendly asphalt;
(4) and (4) carrying out index analysis on the modified environment-friendly asphalt obtained in the step (3).
Optimally, the preparation method of the modified silicon dioxide in the step (1) comprises the following steps of mixing organic bentonite, dodecylamine and tetraethoxysilane according to a molar ratio of 1: 20: 150, adding cetyl trimethyl ammonium bromide which is 0.1-0.2 times of the mass of the organic bentonite, stirring for reacting for 4-5 hours, calcining for 1-3 hours at the temperature of 450-1000 ℃ to obtain pretreated silicon dioxide, and mixing the pretreated silicon dioxide with a silane coupling agent KH-550 in a mass ratio of 3: 1, mixing the mixture with ethanol, stirring and reacting to obtain aminated pretreated silicon dioxide, wherein the aminated pretreated silicon dioxide and glycidyl bromoisobutyrate are mixed according to the mass ratio of 100: 1, mixing the raw materials in water, stirring for reaction, filtering, washing and drying to obtain a modified silicon dioxide blank, wherein the modified silicon dioxide blank and cuprous bromide are mixed according to a mass ratio of 80: 1, mixing the mixture with anisole which is 10 times of the mass of a modified silicon dioxide blank, stirring and mixing the mixture, adding pentamethyl diethylenetriamine which is 0.1-0.2 times of the mass of the modified silicon dioxide blank and a styrene solution with the mass fraction of 10-40% which is 10 times of the mass of the modified silicon dioxide blank, stirring and reacting the mixture to obtain a mixture, mixing the mixture with methanol, filtering and drying the mixture to obtain the modified silicon dioxide.
As optimization, the base material in the step (2) is one or more than two of aromatic heavy oil, coal tar pitch and construction asphalt; the aromatic heavy oil is selected from one or two or more of coal tar, pitch coking heavy oil, wash oil, anthracene oil I, anthracene oil II or low-temperature dry distillation coal tar pitch.
Preferably, the aldehyde compound in the step (3) is any one or a combination of two of formaldehyde, trioxymethylene, paraformaldehyde, benzaldehyde, terephthalaldehyde, p-tolualdehyde, cinnamaldehyde or salicylaldehyde.
Preferably, the accelerator in step (3) is any one of sulfonic acid, methanesulfonic acid, ethylsulfonic acid, benzenesulfonic acid or sulfamic acid.
Compared with the prior art, the invention has the beneficial effects that:
the modified silicon dioxide is added into the styrene-butadiene-styrene block copolymer during the preparation of the modified environment-friendly asphalt.
Firstly, the organic bentonite is added in the preparation process of the modified silicon dioxide, the ethyl orthosilicate can be hydrolyzed between the layers of the organic bentonite due to the existence of the organic bentonite, and a silicon dioxide supporting layer is formed, so that the modified silicon dioxide can be inlaid between the layers of the organic bentonite and has a porous silicon dioxide structure after being calcined, and after the modified silicon dioxide is added into a product, a lamellar mechanism of the bentonite can play a lubricating role, so that the asphalt and the styrene-butadiene-styrene block copolymer are better mixed, a part of harmful substances can be sealed due to the existence of the lamellar structure in the use process of the product, the environmental protection performance of the product is further improved, secondly, after the mesoporous silicon dioxide between the layers of the organic bentonite is treated, the surface of the mesoporous silicon dioxide is grafted with the polystyrene, after the modified silicon dioxide is mixed with the styrene-butadiene-styrene block copolymer, the modified silicon dioxide can be dispersed in styrene-butadiene-styrene block copolymer through polystyrene, and due to the existence of the structure among the organic bentonite layers, the mesoporous silicon dioxide has larger specific surface area, so that the mesoporous silicon dioxide plays a role in adsorbing harmful substances of asphalt in the asphalt, and further the environmental protection performance of the asphalt is further improved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.
In order to more clearly illustrate the method provided by the present invention, the following examples are used to illustrate the method for testing each index of the modified environment-friendly asphalt prepared in the following examples as follows:
softening point test: the softening points of the modified environment-friendly asphalts obtained in the examples and the comparative examples were measured.
Content of harmful substances: the contents of benzopyrene and aldehyde compounds in the modified environment-friendly asphalt obtained in each example and each comparative example are measured.
Low temperature crack resistance test
And (3) according to the test regulations of the asphalt and the asphalt mixture for highway engineering, evaluating the low-temperature crack resistance of the warm-mixed asphalt mixture by adopting a low-temperature bending failure test. The rolled rut plate is cut into specified sizes, the length is 250mm +/-2.0 mm, the width is 30mm +/-2.0 mm, and the height is 35mm +/-2.0 mm. Placing the test piece in an environment box with the temperature of minus 10 +/-0.5 ℃ for 5 hours to ensure that the overall temperature of the test piece reaches minus 10 +/-0.5 ℃, placing the test piece on a support for loading, and testing the low-temperature crack resistance of the two asphalt mixtures
Example 1
The preparation method of the modified environment-friendly asphalt mainly comprises the following preparation steps:
(1) mixing a styrene-butadiene-styrene block copolymer and modified silicon dioxide according to the mass ratio of 30: 1, mixing the materials in an internal mixer, mixing for 15min at the temperature of 170 ℃ and the rotating speed of 60r/min, and discharging to obtain a modified block copolymer;
(2) mixing a base material and waste rubber powder according to a mass ratio of 50: 1, adding the modified block copolymer obtained in the step (1) with the mass of 0.08 time of that of the base material and coumarone resin with the mass of 0.01 time of that of the base material into a mixture of the base material and the waste rubber powder, and stirring and reacting for 2 hours at the temperature of 200 ℃ to obtain a blank;
(3) mixing the blank obtained in the step (2) with an aldehyde compound according to a mass ratio of 30: 1, mixing, adding an accelerant with the mass of 0.01 time of that of the blank, and stirring and reacting for 8 hours in a nitrogen atmosphere to obtain the modified environment-friendly asphalt;
(4) and (4) carrying out index analysis on the modified environment-friendly asphalt obtained in the step (3).
Optimally, the preparation method of the modified silicon dioxide in the step (1) comprises the following steps of mixing organic bentonite, dodecylamine and tetraethoxysilane according to a molar ratio of 1: 20: 150, adding hexadecyl trimethyl ammonium bromide with the mass of 0.1 time of that of the organic bentonite, stirring for reaction for 5 hours, calcining for 23 hours at the temperature of 800 ℃ to obtain pretreated silicon dioxide, and mixing the pretreated silicon dioxide with a silane coupling agent KH-550 in a mass ratio of 3: 1, mixing the mixture with ethanol, stirring and reacting to obtain aminated pretreated silicon dioxide, wherein the aminated pretreated silicon dioxide and glycidyl bromoisobutyrate are mixed according to the mass ratio of 100: 1, mixing the raw materials in water, stirring for reaction, filtering, washing and drying to obtain a modified silicon dioxide blank, wherein the modified silicon dioxide blank and cuprous bromide are mixed according to a mass ratio of 80: 1, mixing the mixture with anisole which is 10 times of the mass of the modified silicon dioxide blank, stirring and mixing the mixture, adding pentamethyl diethylenetriamine which is 0.1 times of the mass of the modified silicon dioxide blank and a styrene solution with the mass fraction of 20 percent which is 10 times of the mass of the modified silicon dioxide blank, stirring and reacting the mixture to obtain a mixture, mixing the mixture with methanol, filtering and drying the mixture to obtain the modified silicon dioxide.
Preferably, the base material in the step (2) is aromatic heavy oil and coal tar pitch according to a mass ratio of 1: 2, mixing; coal tar is used for the separation of the aromatic heavy oil.
Preferably, the aldehyde compound in the step (3) is formaldehyde.
Preferably, the accelerator in step (3) is methanesulfonic acid.
Example 2
The preparation method of the modified environment-friendly asphalt mainly comprises the following preparation steps:
(1) mixing a base material and waste rubber powder according to a mass ratio of 50: 1, adding modified silicon dioxide with the mass of 0.08 time of that of the base material and coumarone resin with the mass of 0.01 time of that of the base material into the mixture of the base material and the waste rubber powder, and stirring and reacting for 2 hours at the temperature of 200 ℃ to obtain a blank;
(2) mixing the blank obtained in the step (1) with an aldehyde compound according to a mass ratio of 30: 1, mixing, adding an accelerant with the mass of 0.01 time of that of the blank, and stirring and reacting for 8 hours in a nitrogen atmosphere to obtain the modified environment-friendly asphalt;
(3) and (3) carrying out index analysis on the modified environment-friendly asphalt obtained in the step (2).
Optimally, the preparation method of the modified silicon dioxide in the step (1) comprises the following steps of mixing organic bentonite, dodecylamine and tetraethoxysilane according to a molar ratio of 1: 20: 150, adding hexadecyl trimethyl ammonium bromide with the mass of 0.1 time of that of the organic bentonite, stirring for reaction for 5 hours, calcining for 23 hours at the temperature of 800 ℃ to obtain pretreated silicon dioxide, and mixing the pretreated silicon dioxide with a silane coupling agent KH-550 in a mass ratio of 3: 1, mixing the mixture with ethanol, stirring and reacting to obtain aminated pretreated silicon dioxide, wherein the aminated pretreated silicon dioxide and glycidyl bromoisobutyrate are mixed according to the mass ratio of 100: 1, mixing the raw materials in water, stirring for reaction, filtering, washing and drying to obtain a modified silicon dioxide blank, wherein the modified silicon dioxide blank and cuprous bromide are mixed according to a mass ratio of 80: 1, mixing the mixture with anisole which is 10 times of the mass of the modified silicon dioxide blank, stirring and mixing the mixture, adding pentamethyl diethylenetriamine which is 0.1 times of the mass of the modified silicon dioxide blank and a styrene solution with the mass fraction of 20 percent which is 10 times of the mass of the modified silicon dioxide blank, stirring and reacting the mixture to obtain a mixture, mixing the mixture with methanol, filtering and drying the mixture to obtain the modified silicon dioxide.
Preferably, the base stock in the step (1) is aromatic heavy oil and coal tar pitch in a mass ratio of 1: 2, mixing; coal tar is used for the separation of the aromatic heavy oil.
Preferably, the aldehyde compound in the step (2) is formaldehyde.
Preferably, the accelerator in step (2) is methanesulfonic acid.
Example 3
The preparation method of the modified environment-friendly asphalt mainly comprises the following preparation steps:
(1) mixing a styrene-butadiene-styrene block copolymer and modified silicon dioxide according to the mass ratio of 30: 1, mixing the materials in an internal mixer, mixing for 15min at the temperature of 170 ℃ and the rotating speed of 60r/min, and discharging to obtain a modified block copolymer;
(2) mixing a base material and waste rubber powder according to a mass ratio of 50: 1, adding the modified block copolymer obtained in the step (1) with the mass of 0.08 time of that of the base material and coumarone resin with the mass of 0.01 time of that of the base material into a mixture of the base material and the waste rubber powder, and stirring and reacting for 2 hours at the temperature of 200 ℃ to obtain a blank;
(3) mixing the blank obtained in the step (2) with an aldehyde compound according to a mass ratio of 30: 1, mixing, adding an accelerant with the mass of 0.01 time of that of the blank, and stirring and reacting for 8 hours in a nitrogen atmosphere to obtain the modified environment-friendly asphalt;
(4) and (4) carrying out index analysis on the modified environment-friendly asphalt obtained in the step (3).
Optimally, the preparation method of the modified silicon dioxide in the step (1) comprises the following steps of mixing organic bentonite, dodecylamine and tetraethoxysilane according to a molar ratio of 1: 20: 150, adding hexadecyl trimethyl ammonium bromide with the mass of 0.1 time of that of the organic bentonite, stirring for 5 hours after reaction, and calcining for 23 hours at the temperature of 800 ℃ to obtain the modified silicon dioxide.
Preferably, the base material in the step (2) is aromatic heavy oil and coal tar pitch according to a mass ratio of 1: 2, mixing; coal tar is used for the separation of the aromatic heavy oil.
Preferably, the aldehyde compound in the step (3) is formaldehyde.
Preferably, the accelerator in step (3) is methanesulfonic acid.
Comparative example
The preparation method of the modified environment-friendly asphalt mainly comprises the following preparation steps:
(1) mixing a base material and waste rubber powder according to a mass ratio of 50: 1, adding modified silicon dioxide with the mass of 0.08 time of that of the base material and coumarone resin with the mass of 0.01 time of that of the base material into the mixture of the base material and the waste rubber powder, and stirring and reacting for 2 hours at the temperature of 200 ℃ to obtain a blank;
(2) mixing the blank obtained in the step (1) with an aldehyde compound according to a mass ratio of 30: 1, mixing, adding an accelerant with the mass of 0.01 time of that of the blank, and stirring and reacting for 8 hours in a nitrogen atmosphere to obtain the modified environment-friendly asphalt;
(3) and (3) carrying out index analysis on the modified environment-friendly asphalt obtained in the step (2).
Optimally, the preparation method of the modified silicon dioxide in the step (1) comprises the following steps of mixing organic bentonite, dodecylamine and tetraethoxysilane according to a molar ratio of 1: 20: 150, adding hexadecyl trimethyl ammonium bromide with the mass of 0.1 time of that of the organic bentonite, stirring for 5 hours after reaction, and calcining for 23 hours at the temperature of 800 ℃ to obtain the modified silicon dioxide.
Preferably, the base stock in the step (1) is aromatic heavy oil and coal tar pitch in a mass ratio of 1: 2, mixing; coal tar is used for the separation of the aromatic heavy oil.
Preferably, the aldehyde compound in the step (2) is formaldehyde.
Preferably, the accelerator in step (2) is methanesulfonic acid.
Examples of effects
Table 1 below shows the results of performance analysis of the modified environment-friendly asphalt prepared by using examples 1 to 3 of the present invention and a comparative example.
TABLE 1
As can be seen from the comparison of the experimental data of example 1 and the comparative example in Table 1, the addition of the modified silica in the preparation of the modified environment-friendly asphalt can effectively improve the service performance of the product and make the product more environment-friendly.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. The preparation method of the modified environment-friendly asphalt is characterized by mainly comprising the following preparation steps:
(1) mixing the block copolymer and the modified silicon dioxide in an internal mixer, mixing, and discharging to obtain a modified block copolymer;
(2) mixing a base material and waste rubber powder, adding the modified block copolymer obtained in the step (1) and coumarone resin, and stirring to react to obtain a blank;
(3) mixing the blank obtained in the step (2) with an aldehyde compound, adding an accelerant, and stirring and reacting under the condition of inert gas to obtain the modified environment-friendly asphalt;
(4) and (4) carrying out index analysis on the modified environment-friendly asphalt obtained in the step (3).
2. The preparation method of the modified environment-friendly asphalt as claimed in claim 2, wherein the preparation method of the modified environment-friendly asphalt mainly comprises the following preparation steps:
(1) mixing a styrene-butadiene-styrene block copolymer and modified silicon dioxide according to the mass ratio of 20: 1-40: 1, mixing the materials in an internal mixer, mixing for 10-20 min at the temperature of 150-170 ℃ and the rotating speed of 60-80 r/min, and discharging to obtain a modified block copolymer;
(2) mixing a base material and waste rubber powder according to a mass ratio of 50: 1-60: 1, adding the modified block copolymer obtained in the step (1) with the mass of 0.05-0.12 time of that of the base material and coumarone resin with the mass of 0.01-0.05 time of that of the base material into a mixture of the base material and the waste rubber powder, and stirring and reacting for 2 hours at the temperature of 170-200 ℃ to obtain a blank;
(3) mixing the blank obtained in the step (2) with an aldehyde compound according to the mass ratio of 20: 1-40: 1, mixing, adding an accelerant with the mass of 0.01-0.02 times of that of the blank, and stirring and reacting for 5-10 hours in a nitrogen atmosphere to obtain modified environment-friendly asphalt;
(4) and (4) carrying out index analysis on the modified environment-friendly asphalt obtained in the step (3).
3. The method for preparing modified environment-friendly asphalt as claimed in claim 1, wherein the modified silica in step (1) is prepared by mixing organic bentonite, dodecylamine and tetraethoxysilane in a molar ratio of 1: 20: 150, adding cetyl trimethyl ammonium bromide which is 0.1-0.2 times of the mass of the organic bentonite, stirring for reacting for 4-5 hours, calcining for 1-3 hours at the temperature of 450-1000 ℃ to obtain pretreated silicon dioxide, and mixing the pretreated silicon dioxide with a silane coupling agent KH-550 in a mass ratio of 3: 1, mixing the mixture with ethanol, stirring and reacting to obtain aminated pretreated silicon dioxide, wherein the aminated pretreated silicon dioxide and glycidyl bromoisobutyrate are mixed according to the mass ratio of 100: 1, mixing the raw materials in water, stirring for reaction, filtering, washing and drying to obtain a modified silicon dioxide blank, wherein the modified silicon dioxide blank and cuprous bromide are mixed according to a mass ratio of 80: 1, mixing the mixture with anisole which is 10 times of the mass of a modified silicon dioxide blank, stirring and mixing the mixture, adding pentamethyl diethylenetriamine which is 0.1-0.2 times of the mass of the modified silicon dioxide blank and a styrene solution with the mass fraction of 10-40% which is 10 times of the mass of the modified silicon dioxide blank, stirring and reacting the mixture to obtain a mixture, mixing the mixture with methanol, filtering and drying the mixture to obtain the modified silicon dioxide.
4. The method for preparing modified environment-friendly asphalt according to claim 1, wherein the base material in the step (2) is one or more than two of aromatic heavy oil, coal asphalt and construction asphalt; the aromatic heavy oil is selected from one or two or more of coal tar, pitch coking heavy oil, wash oil, anthracene oil I, anthracene oil II or low-temperature dry distillation coal tar pitch.
5. The method for preparing modified environment-friendly asphalt according to claim 1, wherein the aldehyde compound in the step (3) is one or a combination of two of formaldehyde, trioxymethylene, paraformaldehyde, benzaldehyde, terephthalaldehyde, p-tolualdehyde, cinnamaldehyde and salicylaldehyde.
6. The method for preparing modified environment-friendly asphalt according to claim 1, wherein the accelerator in step (3) is any one of sulfonic acid, methanesulfonic acid, ethylsulfonic acid, benzenesulfonic acid or sulfamic acid.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101993600A (en) * | 2010-12-15 | 2011-03-30 | 东南大学 | Nanoparticle modified asphalt and preparation method thereof |
| CN104098918A (en) * | 2013-04-11 | 2014-10-15 | 上海建设机场道路工程有限公司 | Modified asphalt and preparation method thereof |
| CN104277464A (en) * | 2014-09-05 | 2015-01-14 | 上海频谱顿交通科技有限公司 | Nano-polymer compound modified asphalt and preparation method thereof |
| CN104593032A (en) * | 2015-01-12 | 2015-05-06 | 中钢集团鞍山热能研究院有限公司 | Environment-friendly asphalt and preparation method thereof |
| CN105238429A (en) * | 2015-10-19 | 2016-01-13 | 太原理工大学 | Method for preparing low-toxicity modified coal pitch for road building |
| CN107057382A (en) * | 2016-12-31 | 2017-08-18 | 山西省交通科学研究院 | A kind of polymer and montmorillonite modified synergic coal tar pitch and preparation method thereof |
| CN109181329A (en) * | 2018-09-29 | 2019-01-11 | 杨林 | Stable anti-cracking modified asphalt and preparation method thereof |
| CN109294255A (en) * | 2018-09-30 | 2019-02-01 | 广东粤运佳富实业有限公司 | A kind of high-viscosity high-elasticity modified pitch and preparation method thereof |
| CN110183245A (en) * | 2019-05-30 | 2019-08-30 | 杨明洲 | A kind of preparation method keeping the temperature hydrophobic type expanded perlite |
-
2020
- 2020-11-19 CN CN202011305346.4A patent/CN113698778A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101993600A (en) * | 2010-12-15 | 2011-03-30 | 东南大学 | Nanoparticle modified asphalt and preparation method thereof |
| CN104098918A (en) * | 2013-04-11 | 2014-10-15 | 上海建设机场道路工程有限公司 | Modified asphalt and preparation method thereof |
| CN104277464A (en) * | 2014-09-05 | 2015-01-14 | 上海频谱顿交通科技有限公司 | Nano-polymer compound modified asphalt and preparation method thereof |
| CN104593032A (en) * | 2015-01-12 | 2015-05-06 | 中钢集团鞍山热能研究院有限公司 | Environment-friendly asphalt and preparation method thereof |
| CN105238429A (en) * | 2015-10-19 | 2016-01-13 | 太原理工大学 | Method for preparing low-toxicity modified coal pitch for road building |
| CN107057382A (en) * | 2016-12-31 | 2017-08-18 | 山西省交通科学研究院 | A kind of polymer and montmorillonite modified synergic coal tar pitch and preparation method thereof |
| CN109181329A (en) * | 2018-09-29 | 2019-01-11 | 杨林 | Stable anti-cracking modified asphalt and preparation method thereof |
| CN109294255A (en) * | 2018-09-30 | 2019-02-01 | 广东粤运佳富实业有限公司 | A kind of high-viscosity high-elasticity modified pitch and preparation method thereof |
| CN110183245A (en) * | 2019-05-30 | 2019-08-30 | 杨明洲 | A kind of preparation method keeping the temperature hydrophobic type expanded perlite |
Non-Patent Citations (1)
| Title |
|---|
| 戈明亮: "《麦羟硅钠石的制备、改性及应用（第1版）》", 31 December 2018, 华南理工大学出版社 * |
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