CN116656142A - Environment-friendly modified asphalt production process - Google Patents
Environment-friendly modified asphalt production process Download PDFInfo
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- CN116656142A CN116656142A CN202310762005.7A CN202310762005A CN116656142A CN 116656142 A CN116656142 A CN 116656142A CN 202310762005 A CN202310762005 A CN 202310762005A CN 116656142 A CN116656142 A CN 116656142A
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- 239000010426 asphalt Substances 0.000 title claims abstract description 102
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 229920001971 elastomer Polymers 0.000 claims abstract description 127
- 239000000843 powder Substances 0.000 claims abstract description 114
- 239000002699 waste material Substances 0.000 claims abstract description 53
- 239000011159 matrix material Substances 0.000 claims abstract description 34
- 238000006243 chemical reaction Methods 0.000 claims abstract description 31
- 239000000779 smoke Substances 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 19
- 230000008569 process Effects 0.000 claims abstract description 14
- 238000010008 shearing Methods 0.000 claims abstract description 14
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 9
- 230000001877 deodorizing effect Effects 0.000 claims abstract description 5
- 239000002781 deodorant agent Substances 0.000 claims description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 35
- 238000003756 stirring Methods 0.000 claims description 32
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 24
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 24
- 239000007788 liquid Substances 0.000 claims description 23
- 230000001629 suppression Effects 0.000 claims description 23
- 239000000341 volatile oil Substances 0.000 claims description 23
- 239000008367 deionised water Substances 0.000 claims description 22
- 229910021641 deionized water Inorganic materials 0.000 claims description 22
- 238000002156 mixing Methods 0.000 claims description 18
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 18
- 229920000468 styrene butadiene styrene block copolymer Polymers 0.000 claims description 17
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 16
- 238000001035 drying Methods 0.000 claims description 16
- 238000005406 washing Methods 0.000 claims description 16
- 229920000858 Cyclodextrin Polymers 0.000 claims description 14
- GDSRMADSINPKSL-HSEONFRVSA-N gamma-cyclodextrin Chemical compound OC[C@H]([C@H]([C@@H]([C@H]1O)O)O[C@H]2O[C@@H]([C@@H](O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O3)[C@H](O)[C@H]2O)CO)O[C@@H]1O[C@H]1[C@H](O)[C@@H](O)[C@@H]3O[C@@H]1CO GDSRMADSINPKSL-HSEONFRVSA-N 0.000 claims description 14
- 229940080345 gamma-cyclodextrin Drugs 0.000 claims description 14
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 12
- 235000019253 formic acid Nutrition 0.000 claims description 12
- 235000009024 Ceanothus sanguineus Nutrition 0.000 claims description 10
- 240000003553 Leptospermum scoparium Species 0.000 claims description 10
- 235000015459 Lycium barbarum Nutrition 0.000 claims description 10
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 10
- 230000008961 swelling Effects 0.000 claims description 10
- 241000196324 Embryophyta Species 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 5
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 4
- 239000003381 stabilizer Substances 0.000 claims description 4
- 241000208152 Geranium Species 0.000 claims description 2
- 244000178870 Lavandula angustifolia Species 0.000 claims description 2
- 235000010663 Lavandula angustifolia Nutrition 0.000 claims description 2
- 239000012467 final product Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 239000001102 lavandula vera Substances 0.000 claims description 2
- 235000018219 lavender Nutrition 0.000 claims description 2
- 229920000137 polyphosphoric acid Polymers 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 239000011787 zinc oxide Substances 0.000 claims description 2
- 239000003607 modifier Substances 0.000 abstract description 5
- 238000003912 environmental pollution Methods 0.000 abstract description 4
- 239000010920 waste tyre Substances 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 3
- 230000003993 interaction Effects 0.000 abstract description 3
- 238000009825 accumulation Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract 2
- 238000013329 compounding Methods 0.000 abstract 1
- 230000035515 penetration Effects 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 20
- 230000001965 increasing effect Effects 0.000 description 11
- 239000000047 product Substances 0.000 description 9
- 150000003573 thiols Chemical class 0.000 description 8
- 238000005303 weighing Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 241001093951 Ailanthus altissima Species 0.000 description 1
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- PLKATZNSTYDYJW-UHFFFAOYSA-N azane silver Chemical compound N.[Ag] PLKATZNSTYDYJW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- FIHCMDIDYDOFDJ-UHFFFAOYSA-L copper;azane;sulfate Chemical compound N.[Cu+2].[O-]S([O-])(=O)=O FIHCMDIDYDOFDJ-UHFFFAOYSA-L 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229920006132 styrene block copolymer Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000004448 titration 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
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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 relates to the technical field of asphalt, in particular to an environment-friendly modified asphalt production process. The invention takes the waste rubber powder as the asphalt modifier, and adds the waste rubber powder into the matrix asphalt, so that the problem of environmental pollution caused by the accumulation and treatment of waste tires can be solved, and the penetration, ductility, softening point and other performances of the asphalt material can be improved. And the surface pretreatment is carried out on the waste rubber powder, so that the compatibility between the waste rubber powder and the matrix asphalt is obviously improved, and the problems that the material performance is affected due to poor compatibility and weak interface interaction caused by directly adding the matrix asphalt are avoided. In addition, smoke suppressing and deodorizing agent with certain compounding ratio is added in the shearing reaction process of the waste rubber powder and the matrix asphalt, so that smoke odor generated in the construction process of the asphalt can be improved, and the harm of the construction process to the environment and human body is reduced.
Description
Technical Field
The invention relates to the technical field of asphalt, in particular to an environment-friendly modified asphalt production process.
Background
The increasing traffic and overload phenomena occur continuously, so that the common matrix asphalt is difficult to meet the actual engineering requirements, and the application of different types of modified asphalt becomes a popular research direction in recent years. The rubber asphalt prepared by using the waste tire rubber powder modifier and the matrix asphalt through high-temperature shearing can improve the service performance of the pavement, and can change waste tires into valuable, thereby not only generating new economic benefits, but also solving the problem of environmental pollution caused by accumulation and treatment of the waste tires. Although the modified asphalt has a series of superiority compared with matrix asphalt, the prior rubber modified asphalt has serious odor asphalt smoke release in the construction process, can form great harm to the environment and human body, and has poor storage stability due to insufficient compatibility of rubber powder and asphalt, thus restricting popularization and application of the rubber modified asphalt.
In order to overcome the defects of the prior art, the invention provides an environment-friendly modified asphalt production process.
Disclosure of Invention
The invention aims to provide an environment-friendly modified asphalt production process for solving the problems in the prior art.
In order to solve the technical problems, the invention provides the following technical scheme:
an environment-friendly modified asphalt production process comprises the following steps:
step one: pretreatment of rubber powder:
s1: mixing the waste rubber powder with deionized water, and performing ultrasonic dispersion to obtain waste rubber powder liquid;
s2: adding formic acid and plant essential oil into the waste rubber powder liquid, then dropwise adding hydrogen peroxide, and obtaining modified rubber powder A after stirring reaction, washing and drying;
s3: mixing the modified rubber powder A with deionized water, adding gamma-cyclodextrin after ultrasonic dispersion, stirring for reaction, washing and drying to obtain modified rubber powder B;
step two: the matrix asphalt is weighed and preheated, modified rubber powder B and smoke suppression deodorant are added into the matrix asphalt after preheating, and the initial asphalt is obtained through a shearing reaction;
step three: adding sulfur-free stabilizer into the initial asphalt, stirring at 140-160deg.C, and swelling for 50-70min to obtain the final product.
More optimally, in the first step, the mass ratio of the S1 waste rubber powder to the deionized water is 1:2-4, the mass ratio of the S3 modified rubber powder A to the deionized water is 1:2-4.
More optimally, in the first step, 90-110 parts of waste rubber powder, 0.5-2.5 parts of formic acid, 8-10 parts of plant essential oil, 4-6 parts of hydrogen peroxide and 6-8 parts of gamma-cyclodextrin are calculated according to parts by weight.
More preferably, in the first step, the plant essential oil is one of tea tree essential oil, lavender essential oil and geranium essential oil.
More preferably, in the first step, S2 stirs the reaction conditions: stirring and reacting for 3-5h at 50-100 ℃, and S3 stirring and reacting conditions: the mixture is stirred and reacted for 5 to 8 hours at the temperature of 50 to 60 ℃.
More preferably, in the second step, the preheating condition is as follows: heating at 150-170deg.C for 30-50min.
More optimally, in the second step, the smoke suppression and odor removal agent is a mixture of aluminum hydroxide, a styrene-butadiene-styrene block copolymer and an odor removal agent, and the mass ratio is 4-6:10:1.
more preferably, in the second step, the shearing condition is: the rotating speed is 4000-4500r/min, the temperature is 170-190 ℃ and the time is 30-60min.
More optimally, in the third step, the sulfur-free stabilizer is one of zinc oxide, polyphosphoric acid and maleic anhydride.
The invention has the beneficial effects that:
along with the increasing of modern traffic, the use of asphalt roads is gradually increased, and the invention provides an environment-friendly modified asphalt production process. The waste rubber powder taking the waste rubber tires as the raw materials is used as the modifier to modify the matrix asphalt, so that the black environmental pollution caused by the waste rubber tires can be reduced, the environment-friendly concept of environmental protection and recycling and regenerating resources is met, and meanwhile, the cost raw materials required for preparing the asphalt highway can be saved, and a good economic effect is generated.
The invention firstly carries out pretreatment on the waste rubber powder, carries out surface modification on the waste rubber powder liquid, and uses formic acid as a catalyst to promote the interaction between hydrogen peroxide and the waste rubber powder, so that the surface of the waste rubber powder generates oxygen-containing polar groups, thereby generating physical connection with the polar groups in the matrix asphalt due to similar polarity, enhancing the compatibility between the matrix asphalt and the waste rubber powder and improving the interface bonding of the rubber asphalt by improving the surface activity of the rubber powder. In addition, the addition of the alcohol plant essential oil to the waste rubber powder liquid can also increase the oxygen-containing polar groups on the surface of the waste rubber powder, and can improve the odor of asphalt due to the unique aromatic smell of the plant essential oil, so that pleasant odor-free asphalt is obtained. The gamma-cyclodextrin is added into the waste rubber powder liquid, so that hydrophilic polar groups and nonpolar hydrophobic chain segments can be obtained at the same time, and according to the principle of physical similarity compatibility, the gamma-cyclodextrin can be respectively connected with the hydrophilic part and the hydrophobic chain segments of the waste rubber powder and the matrix asphalt, so that the compatibility of the rubber asphalt is further enhanced, and the interface performance is improved. Meanwhile, the gamma-cyclodextrin can form chemical reaction with the functional groups of the matrix asphalt or the waste rubber powder, and the interface combination of the rubber powder and the asphalt is improved through the combination of chemical bonds.
In addition, since the odor asphalt smoke is seriously released when the road asphalt is prepared in the actual road engineering, serious physical harm is brought to the staff and surrounding residents, and great environmental pollution is generated. The invention reduces the influence caused by smoke odor by adding the smoke suppression deodorant in the preparation process of asphalt. The smoke suppressing and deodorizing agent is a mixture of aluminum hydroxide, a styrene-butadiene-styrene block copolymer and a deodorizing agent, and the mass ratio is 4-8:10:1. the invention combines the common flame-retardant smoke suppressant aluminum hydroxide, asphalt modifier styrene-butadiene-styrene block copolymer and the deodorant in a certain proportion, and then selects the proportion capable of playing the best effect of smoke suppression and smell removal, and the smoke suppression and smell removal agent has the best performance in the range of the proportion.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely in connection with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The raw material sources are as follows: waste rubber powder purchased from Shijiu Hua Lang mineral products trade company, model xjkl-1; plant essential oil the invention selects tea tree essential oil, and is purchased from Shanghai Ailanthus biological technology limited company, and the model is DF; matrix asphalt purchased from Venlong petrochemical Co., ltd., model 70#A; styrene-butadiene-styrene block copolymer (SBS), purchased from Jinan Shanhai chemical engineering Co., ltd, model 929/796; the deodorant is purchased from Shanghai H-Oon environmental engineering Co., ltd, model number jua058,058.
Example 1: step one: pretreatment of rubber powder:
s1: mixing 110 parts of waste rubber powder with deionized water, and performing ultrasonic dispersion to obtain waste rubber powder liquid;
s2: adding 2.5 parts of formic acid and 10 parts of tea tree essential oil into the waste rubber powder liquid, then dropwise adding 6 parts of hydrogen peroxide, stirring at 100 ℃ for reaction for 5 hours, and washing and drying to obtain modified rubber powder A;
s3: mixing the modified rubber powder A with deionized water, adding 8 parts of gamma-cyclodextrin after ultrasonic dispersion, stirring at 60 ℃ for reaction for 8 hours, and washing and drying to obtain modified rubber powder B;
step two: weighing 500 parts of matrix asphalt, preheating at 170 ℃ for 50min, adding modified rubber powder B and 16 parts of smoke suppression deodorant (the mass ratio of aluminum hydroxide, styrene-butadiene-styrene block copolymer and deodorant is 5:10:1) into the matrix asphalt after preheating, and carrying out shearing reaction for 60min at the temperature of 190 ℃ at the rotating speed of 4500r/min to obtain initial asphalt;
step three: adding 1 part of maleic anhydride into the initial asphalt, stirring and developing and swelling for 70 minutes at 160 ℃ to prepare a finished product.
Example 2: step one: pretreatment of rubber powder:
s1: mixing 110 parts of waste rubber powder with deionized water, and performing ultrasonic dispersion to obtain waste rubber powder liquid;
s2: adding 2.5 parts of formic acid and 10 parts of tea tree essential oil into the waste rubber powder liquid, then dropwise adding 6 parts of hydrogen peroxide, stirring at 75 ℃ for reaction for 4 hours, and washing and drying to obtain modified rubber powder A;
s3: mixing the modified rubber powder A with deionized water, adding 8 parts of gamma-cyclodextrin after ultrasonic dispersion, stirring at 55 ℃ for reaction for 6.5 hours, and washing and drying to obtain modified rubber powder B;
step two: weighing 500 parts of matrix asphalt, preheating for 40min at 160 ℃, adding modified rubber powder B and 16 parts of smoke suppression deodorant (the mass ratio of aluminum hydroxide, styrene-butadiene-styrene block copolymer and deodorant is 5:10:1) into the matrix asphalt after preheating, and carrying out shearing reaction for 45min at the temperature of 180 ℃ at the rotating speed of 4250r/min to obtain initial asphalt;
step three: adding 1 part of maleic anhydride into the initial asphalt, stirring and developing and swelling for 60min at 150 ℃ to prepare a finished product.
Example 3: step one: pretreatment of rubber powder:
s1: mixing 110 parts of waste rubber powder with deionized water, and performing ultrasonic dispersion to obtain waste rubber powder liquid;
s2: adding 2.5 parts of formic acid and 10 parts of tea tree essential oil into the waste rubber powder liquid, then dropwise adding 6 parts of hydrogen peroxide, stirring at 50 ℃ for reaction for 3 hours, and washing and drying to obtain modified rubber powder A;
s3: mixing the modified rubber powder A with deionized water, adding 8 parts of gamma-cyclodextrin after ultrasonic dispersion, stirring at 50 ℃ for reaction for 5 hours, and washing and drying to obtain modified rubber powder B;
step two: weighing 500 parts of matrix asphalt, preheating for 30min at 150 ℃, adding modified rubber powder B and 16 parts of smoke suppression deodorant (the mass ratio of aluminum hydroxide, styrene-butadiene-styrene block copolymer and deodorant is 5:10:1) into the matrix asphalt after preheating, and carrying out shearing reaction for 30min at the temperature of 170 ℃ at the rotating speed of 4000r/min to obtain initial asphalt;
step three: adding 1 part of maleic anhydride into the initial asphalt, stirring and developing and swelling for 50min at 140 ℃ to prepare a finished product.
Comparative example 1: step one, the following steps: the step S2 in the pretreatment of the rubber powder is removed, and the rest is the same as in the example 1, and the specific steps are as follows: step one: pretreatment of rubber powder:
s1: mixing 110 parts of waste rubber powder with deionized water, and performing ultrasonic dispersion to obtain waste rubber powder liquid;
s2: mixing the waste rubber powder liquid with deionized water, adding 8 parts of gamma-cyclodextrin after ultrasonic dispersion, stirring at 60 ℃ for reaction for 8 hours, and washing and drying to obtain modified rubber powder;
step two: weighing 500 parts of matrix asphalt, preheating at 170 ℃ for 50min, adding modified rubber powder and 16 parts of smoke suppression deodorant (the mass ratio of aluminum hydroxide, styrene-butadiene-styrene block copolymer and deodorant is 5:10:1) into the matrix asphalt after preheating, and carrying out shearing reaction for 60min at the temperature of 190 ℃ at the rotating speed of 4500r/min to obtain initial asphalt;
step three: adding 1 part of maleic anhydride into the initial asphalt, stirring and developing and swelling for 70 minutes at 160 ℃ to prepare a finished product.
Comparative example 2: step one, the following steps: the step S3 in the pretreatment of the rubber powder is removed, and the rest is the same as in the example 1, and the specific steps are as follows: step one: pretreatment of rubber powder:
s1: mixing 110 parts of waste rubber powder with deionized water, and performing ultrasonic dispersion to obtain waste rubber powder liquid;
s2: adding 2.5 parts of formic acid and 10 parts of tea tree essential oil into the waste rubber powder liquid, then dropwise adding 6 parts of hydrogen peroxide, stirring at 100 ℃ for reaction for 5 hours, and washing and drying to obtain modified rubber powder;
step two: weighing 500 parts of matrix asphalt, preheating at 170 ℃ for 50min, adding modified rubber powder and 16 parts of smoke suppression deodorant (the mass ratio of aluminum hydroxide, styrene-butadiene-styrene block copolymer and deodorant is 5:10:1) into the matrix asphalt after preheating, and carrying out shearing reaction for 60min at the temperature of 190 ℃ at the rotating speed of 4500r/min to obtain initial asphalt;
step three: adding 1 part of maleic anhydride into the initial asphalt, stirring and developing and swelling for 70 minutes at 160 ℃ to prepare a finished product.
Comparative example 3: step one, the following steps: the rubber powder pretreatment was removed, and the rest was the same as in example 1, and the specific procedure was as follows:
step one: mixing 110 parts of waste rubber powder with deionized water, and performing ultrasonic dispersion to obtain waste rubber powder liquid;
step two: weighing 500 parts of matrix asphalt, preheating at 170 ℃ for 50min, adding waste rubber powder liquid and 16 parts of smoke suppression deodorant (the mass ratio of aluminum hydroxide, styrene-butadiene-styrene block copolymer and deodorant is 5:10:1) into the matrix asphalt after preheating, and carrying out shearing reaction for 60min at the temperature of 190 ℃ at the rotating speed of 4500r/min to obtain initial asphalt;
step three: adding 1 part of maleic anhydride into the initial asphalt, stirring and developing and swelling for 70 minutes at 160 ℃ to prepare a finished product.
Comparative example 4: changing the component ratio of the smoke suppression deodorant in the second step into aluminum hydroxide, a styrene-butadiene-styrene block copolymer and the deodorant with the mass ratio of 4:10:1, the rest is the same as in example 1, the specific steps are as follows: step one: pretreatment of rubber powder:
s1: mixing 110 parts of waste rubber powder with deionized water, and performing ultrasonic dispersion to obtain waste rubber powder liquid;
s2: adding 2.5 parts of formic acid and 10 parts of tea tree essential oil into the waste rubber powder liquid, then dropwise adding 6 parts of hydrogen peroxide, stirring at 100 ℃ for reaction for 5 hours, and washing and drying to obtain modified rubber powder A;
s3: mixing the modified rubber powder A with deionized water, adding 8 parts of gamma-cyclodextrin after ultrasonic dispersion, stirring at 60 ℃ for reaction for 8 hours, and washing and drying to obtain modified rubber powder B;
step two: weighing 500 parts of matrix asphalt, preheating at 170 ℃ for 50min, adding modified rubber powder B and 16 parts of smoke suppression deodorant (the mass ratio of aluminum hydroxide, styrene-butadiene-styrene block copolymer and deodorant is 4:10:1) into the matrix asphalt after preheating, and carrying out shearing reaction for 60min at the temperature of 190 ℃ at the rotating speed of 4500r/min to obtain initial asphalt;
step three: adding 1 part of maleic anhydride into the initial asphalt, stirring and developing and swelling for 70 minutes at 160 ℃ to prepare a finished product.
Comparative example 5: changing the component ratio of the smoke suppression deodorant in the second step into aluminum hydroxide, a styrene-butadiene-styrene block copolymer and the deodorant with the mass ratio of 6:10:1, the rest is the same as in example 1, the specific steps are as follows: step one: pretreatment of rubber powder:
s1: mixing 110 parts of waste rubber powder with deionized water, and performing ultrasonic dispersion to obtain waste rubber powder liquid;
s2: adding 2.5 parts of formic acid and 10 parts of tea tree essential oil into the waste rubber powder liquid, then dropwise adding 6 parts of hydrogen peroxide, stirring at 100 ℃ for reaction for 5 hours, and washing and drying to obtain modified rubber powder A;
s3: mixing the modified rubber powder A with deionized water, adding 8 parts of gamma-cyclodextrin after ultrasonic dispersion, stirring at 60 ℃ for reaction for 8 hours, and washing and drying to obtain modified rubber powder B;
step two: weighing 500 parts of matrix asphalt, preheating at 170 ℃ for 50min, adding modified rubber powder B and 16 parts of smoke suppression deodorant (the mass ratio of aluminum hydroxide, styrene-butadiene-styrene block copolymer and deodorant is 6:10:1) into the matrix asphalt after preheating, and carrying out shearing reaction for 60min at the temperature of 190 ℃ at the rotating speed of 4500r/min to obtain initial asphalt;
step three: adding 1 part of maleic anhydride into the initial asphalt, stirring and developing and swelling for 70 minutes at 160 ℃ to prepare a finished product.
Detection test:
water contact angle measurement: the modified rubber powder is subjected to a water contact angle test according to GB/T30693-2014, the modified rubber powder is hot pressed into a sheet with a flat and smooth surface, the rubber powder sheet is kept dry before the test, and then the water contact angle is measured by adopting a water contact angle measuring instrument of DataPhysics company of Germany.
Odor measurement: according to GB/T505-1965 (measuring method of mercaptan sulfur content of engine fuel (ammonia-copper sulfate method)), measuring the mercaptan content in rubber asphalt, dissolving equivalent rubber asphalt in solvent No. 3 aviation kerosene, preparing silver-ammonia solution, measuring the mercaptan content in the rubber asphalt before and after adding smoke suppression and odor removing agent by titration, and judging the odor degree according to the measured mercaptan content.
| Thiol content/% | Water contact angle/° | |
| Example 1 | 0.75×10 -5 | 88.5 |
| Example 2 | 0.73×10 -5 | 88.2 |
| Example 3 | 0.71×10 -5 | 88.1 |
| Comparative example 1 | 0.74×10 -5 | 93.5 |
| Comparative example 2 | 0.75×10 -5 | 91.5 |
| Comparative example 3 | 0.74×10 -5 | 101.3 |
| Comparative example 4 | 0.62×10 -5 | 88.4 |
| Comparative example 5 | 0.86×10 -5 | 88.5 |
Conclusion: the amounts of examples 1 to 3 were unchanged, and only part of the reaction parameters were modified. From experimental data, the properties of the rubber asphalt are not obviously fluctuated. Comparative example 1: step one, the following steps: the step S2 in the pretreatment of the rubber powder was removed, and the rest was the same as in example 1, and as apparent from the experimental data, the thiol content was not significantly changed, the water contact angle was increased, and the analysis was because: the hydrogen peroxide and the alcohol tea tree essential oil catalyzed by the surface modifier formic acid are removed, so that the surface modification effect in the pretreatment process of the rubber powder is weakened, and the water contact angle of the modified rubber powder treated by the comparative example 1 is increased to 93.5 degrees. Comparative example 2: step one, the following steps: the step S3 in the pretreatment of the rubber powder was removed, and the rest was the same as in example 1, and as apparent from the experimental data, the thiol content was not significantly changed, the water contact angle was increased, and the analysis was because: the removal of the amphiphilic compound gamma-cyclodextrin weakens the surface modification effect during the pretreatment of the rubber powder, so that the water contact angle of the modified rubber powder treated in comparative example 1 is increased to 91.5 degrees. Comparative example 3: step one, the following steps: the pretreatment of the rubber powder was removed, and the rest was the same as in example 1, and as apparent from the experimental data, there was no significant change in thiol content, and the water contact angle was increased, as compared with comparative example 1, because: the pretreatment of the rubber powder is removed, so that the rubber powder is of a three-dimensional cross-linked structure, and the surface active groups are few, so that the problem of poor compatibility and weak interface interaction can occur when the rubber powder is directly added into matrix asphalt, and the water contact angle is obviously increased to 101.3 degrees. Comparative example 4: the component proportion of the smoke suppression deodorant in the second step is changed into aluminum hydroxide and styreneThe mass ratio of butadiene-styrene block copolymer to deodorant is 4:10:1, the rest is the same as in example 1, and from experimental data, the thiol content is reduced compared with comparative example 1, the water contact angle is not changed significantly, and the analysis is because: the component proportion of the smoke suppression deodorant is changed, so that the proportion of the deodorant is increased, the odor removal capability of the smoke suppression deodorant is relatively enhanced, and the thiol content of the finished rubber asphalt is reduced to 0.62 multiplied by 10 -5 . Comparative example 5: changing the component ratio of the smoke suppression deodorant in the second step into aluminum hydroxide, a styrene-butadiene-styrene block copolymer and the deodorant with the mass ratio of 6:10:1, the rest is the same as in example 1, and from experimental data, the thiol content is reduced compared with comparative example 1, the water contact angle is not changed significantly, and the analysis is because: the ratio of the components of the smoke suppression deodorant is changed, so that the ratio of the deodorant is reduced, the odor removal capability of the smoke suppression deodorant is relatively weakened, and the thiol content of the finished rubber asphalt is increased by 0.86 multiplied by 10 -5 。
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process method article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process method article or apparatus.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The environment-friendly modified asphalt production process is characterized by comprising the following steps of:
step one: pretreatment of rubber powder:
s1: mixing the waste rubber powder with deionized water, and performing ultrasonic dispersion to obtain waste rubber powder liquid;
s2: adding formic acid and plant essential oil into the waste rubber powder liquid, then dropwise adding hydrogen peroxide, and obtaining modified rubber powder A after stirring reaction, washing and drying;
s3: mixing the modified rubber powder A with deionized water, adding gamma-cyclodextrin after ultrasonic dispersion, stirring for reaction, washing and drying to obtain modified rubber powder B;
step two: the matrix asphalt is weighed and preheated, modified rubber powder B and smoke suppression deodorant are added into the matrix asphalt after preheating, and the initial asphalt is obtained through a shearing reaction;
step three: adding sulfur-free stabilizer into the initial asphalt, stirring at 140-160deg.C, and swelling for 50-70min to obtain the final product.
2. The process for producing environment-friendly modified asphalt according to claim 1, wherein in the first step, the mass ratio of the S1 waste rubber powder to the deionized water is 1:2-4, the mass ratio of the S3 modified rubber powder A to the deionized water is 1:2-4.
3. The process for producing environment-friendly modified asphalt according to claim 1, wherein in the first step, 90-110 parts of waste rubber powder, 0.5-2.5 parts of formic acid, 8-10 parts of plant essential oil, 4-6 parts of hydrogen peroxide and 6-8 parts of gamma-cyclodextrin are calculated according to parts by weight.
4. The process for producing environment-friendly modified asphalt according to claim 3, wherein in the first step, the plant essential oil is one of tea tree essential oil, lavender essential oil and geranium essential oil.
5. The process for producing environment-friendly modified asphalt according to claim 1, wherein in the first step, the reaction condition of stirring S2: stirring and reacting for 3-5h at 50-100 ℃, and S3 stirring and reacting conditions: the mixture is stirred and reacted for 5 to 8 hours at the temperature of 50 to 60 ℃.
6. The process for producing environment-friendly modified asphalt according to claim 1, wherein in the second step, the preheating condition is as follows: heating at 150-170deg.C for 30-50min.
7. The process for producing environment-friendly modified asphalt according to claim 1, wherein in the second step, the smoke suppressing and deodorizing agent is a mixture of aluminum hydroxide, a styrene-butadiene-styrene block copolymer and a deodorizing agent, and the mass ratio is 4-6:10:1.
8. the process for producing environment-friendly modified asphalt according to claim 1, wherein in the second step, the shearing condition is as follows: the rotating speed is 4000-4500r/min, the temperature is 170-190 ℃ and the time is 30-60min.
9. The process for producing environment-friendly modified asphalt according to claim 1, wherein in the third step, the sulfur-free stabilizer is one of zinc oxide, polyphosphoric acid and maleic anhydride.
10. An environment-friendly modified asphalt production process, which is characterized in that the modified asphalt is prepared by the preparation method according to any one of claims 1-9.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106957535A (en) * | 2017-04-25 | 2017-07-18 | 镇江越辉市政工程有限公司 | Rubber powder modified asphalt and preparation method thereof |
| CN107880574A (en) * | 2017-11-29 | 2018-04-06 | 辽宁瑞德公路科技有限公司 | A kind of high viscous, high-elastic composite modified asphalt of environmental protection and preparation method thereof |
| CN108530923A (en) * | 2018-04-28 | 2018-09-14 | 广东诚泰投资有限公司 | A kind of high-temperature stability pitch |
| CN108707340A (en) * | 2018-05-25 | 2018-10-26 | 佛山市路邦沥青有限公司 | A method of preparing environment-friendly type suppression cigarette pitch |
| CN110698869A (en) * | 2019-11-19 | 2020-01-17 | 山东京博石油化工有限公司 | Light durable asphalt-based composite material and preparation method thereof |
| CN111303647A (en) * | 2020-04-07 | 2020-06-19 | 河北先达环保工程有限公司 | Green odorless rubber powder modified asphalt and preparation method thereof |
| CN111849027A (en) * | 2020-06-28 | 2020-10-30 | 陈佩 | Environment-friendly odorless asphalt modifier and modified asphalt thereof |
| CN111876131A (en) * | 2020-07-23 | 2020-11-03 | 遵义市永合隆建材贸易有限公司 | High-temperature-resistant asphalt composite waterproof coiled material and preparation method thereof |
-
2023
- 2023-06-27 CN CN202310762005.7A patent/CN116656142A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106957535A (en) * | 2017-04-25 | 2017-07-18 | 镇江越辉市政工程有限公司 | Rubber powder modified asphalt and preparation method thereof |
| CN107880574A (en) * | 2017-11-29 | 2018-04-06 | 辽宁瑞德公路科技有限公司 | A kind of high viscous, high-elastic composite modified asphalt of environmental protection and preparation method thereof |
| CN108530923A (en) * | 2018-04-28 | 2018-09-14 | 广东诚泰投资有限公司 | A kind of high-temperature stability pitch |
| CN108707340A (en) * | 2018-05-25 | 2018-10-26 | 佛山市路邦沥青有限公司 | A method of preparing environment-friendly type suppression cigarette pitch |
| CN110698869A (en) * | 2019-11-19 | 2020-01-17 | 山东京博石油化工有限公司 | Light durable asphalt-based composite material and preparation method thereof |
| CN111303647A (en) * | 2020-04-07 | 2020-06-19 | 河北先达环保工程有限公司 | Green odorless rubber powder modified asphalt and preparation method thereof |
| CN111849027A (en) * | 2020-06-28 | 2020-10-30 | 陈佩 | Environment-friendly odorless asphalt modifier and modified asphalt thereof |
| CN111876131A (en) * | 2020-07-23 | 2020-11-03 | 遵义市永合隆建材贸易有限公司 | High-temperature-resistant asphalt composite waterproof coiled material and preparation method thereof |
Non-Patent Citations (4)
| Title |
|---|
| 李军伟 等: "环氧化SBS的制备及其对沥青的改性", 石油沥青, no. 02, 5 April 2004 (2004-04-05), pages 37 - 40 * |
| 洪栗: "湿法胶粉表面修饰及其应用研究", 中国优秀硕士学位论文全文数据库工程科技Ⅰ辑, no. 04, 15 April 2021 (2021-04-15), pages 016 - 217 * |
| 王浩轩 等: "环保型道路沥青的制备", 建筑材料学报, vol. 23, no. 03, 16 May 2019 (2019-05-16), pages 700 - 706 * |
| 陈勇 等: "SBS和SBS环氧化与顺酐化研究", 弹性体, no. 02, 30 April 2005 (2005-04-30), pages 69 - 74 * |
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