CN108659558B - Rubber modified asphalt viscosity-reducing deodorant and preparation method and application thereof - Google Patents
Rubber modified asphalt viscosity-reducing deodorant and preparation method and application thereof Download PDFInfo
- Publication number
- CN108659558B CN108659558B CN201810541523.5A CN201810541523A CN108659558B CN 108659558 B CN108659558 B CN 108659558B CN 201810541523 A CN201810541523 A CN 201810541523A CN 108659558 B CN108659558 B CN 108659558B
- Authority
- CN
- China
- Prior art keywords
- parts
- viscosity
- weight
- modified asphalt
- rubber modified
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- 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
Abstract
The invention belongs to the field of petrochemical industry, and particularly relates to a rubber modified asphalt viscosity-reducing deodorant as well as a preparation method and application thereof. The rubber modified asphalt viscosity-reducing deodorant provided by the invention is prepared from the following raw materials in parts by weight: 10-14 parts of polyether polyol; 15-20 parts of polydimethylsiloxane; 30-50 parts of anthracene oil; 8-16 parts of fumed silica; 2-3 parts of triethanolamine; 50-67 parts of rubber oil; 15-20 parts of white oil; 8-10 parts of polyether epoxy resin. The invention provides a high-performance viscosity-reducing deodorant aiming at the common problems in the production and use processes of the existing rubber modified asphalt, and the viscosity-reducing deodorant can reduce the viscosity of the rubber modified asphalt, so that the production, mixing and paving temperatures of the rubber modified asphalt are reduced, the rubber smell and asphalt smoke generated in the production, mixing and paving processes of the rubber modified asphalt are further obviously reduced, and the aging of the asphalt in the processes is relieved.
Description
Technical Field
The invention belongs to the field of petrochemical industry, and particularly relates to a rubber modified asphalt viscosity-reducing deodorant as well as a preparation method and application thereof.
Background
Petroleum asphalt is a byproduct after crude oil distillation, and the non-renewability of the crude oil determines the non-sustainability of petroleum asphalt resources; with the pace of national infrastructure becoming faster, the demand for asphalt is increasing, and the importance of seeking petroleum asphalt substitutes is gradually highlighted. With the rapid development of economy in China and the improvement of the living standard of people, the automobile holding capacity tends to increase year by year, the automobile holding capacity in China in 2017 reaches 3 hundred million according to statistics, the yield of waste tires in China in 2013 reaches 2.99 million (about 1080 ten thousand tons), the waste tires are rapidly increased at the speed of 8-10%, black pollution is formed, and the black pollution formed by the accumulation of more and more waste tires becomes a serious environmental problem. The mass accumulation of junked tires deteriorates the environment, destroys vegetation and seriously affects human health.
The rubber powder processed by the waste tires is used for the rubber asphalt obtained by modifying the petroleum asphalt, so that the high-low temperature performance of the asphalt can be improved, the aging of an asphalt pavement is slowed down, the running safety of vehicles is improved, the service life of the road is prolonged, and the rubber asphalt can also contribute to the recycling of the waste rubber and the environmental protection. Therefore, the research and application of rubber asphalt is receiving more and more attention from material application and highway scientists. The rubber modified asphalt is researched and developed at present, is successfully used for asphalt pavement construction, and has the advantages of good high-temperature stability, low-temperature flexibility, aging resistance, fatigue resistance and the like. The method greatly improves the utilization ratio of renewable waste materials, relieves the contradiction between the non-renewable petroleum asphalt and the rapid development of road engineering, improves the performance of the road surface, prolongs the service life of the road surface, relieves the environmental pressure caused by waste tires, creates economic value, conforms to the era requirements of people-oriented property, environmental protection and resource recycling, accords with the current policies of building a conservation-oriented society and developing circular economy in China, and also accords with the requirements of the current road construction sustainable development in China.
Because the production temperature of the rubber modified asphalt is higher, the temperature required when the rubber asphalt mixture is mixed and paved is also higher, so that a large amount of rubber smell and asphalt smoke can be generated in the production and construction processes, the phenomenon of environmental complaints often occurs, the influence is caused, and the generation and the application of the rubber modified asphalt are limited. In addition, the asphalt is aged to a certain extent due to overhigh production and construction temperature, and the service performance of the asphalt is influenced.
Disclosure of Invention
In view of the above, the invention aims to provide a rubber modified asphalt viscosity-reducing deodorant, and a preparation method and an application thereof, and the rubber modified asphalt viscosity-reducing deodorant provided by the invention can reduce rubber smell and asphalt smoke generated in the production, mixing and paving processes of rubber modified asphalt, and simultaneously relieve the aging of the asphalt in the processes.
The invention provides a rubber modified asphalt viscosity-reducing deodorant which is prepared from the following raw materials in parts by weight:
preferably, the polyether polyol comprises polyoxypropylene glycol and/or polytetrahydrofuran diol; the polyether polyol has a number average molecular weight of 3000-4000.
Preferably, the number average molecular weight of the polydimethylsiloxane is 50000-100000.
Preferably, the kinematic viscosity of the rubber oil at 40 ℃ is 100-120 mm2/s。
Preferably, the kinematic viscosity of the white oil at 40 ℃ is 50-100 mm2/s。
Preferably, the viscosity of the polyether epoxy resin at 25 ℃ is less than or equal to 120 Pa.S; the epoxy value of the polyether epoxy resin is 0.4-0.6 mol/100 g.
The invention provides a preparation method of the rubber modified asphalt viscosity-reducing deodorant, which comprises the following steps:
a) mixing polyether polyol, polydimethylsiloxane, anthracene oil and gas-phase silica for development to obtain a first semi-finished product; mixing triethanolamine, rubber oil, white oil and polyether epoxy resin, and developing to obtain a second semi-finished product;
b) and (3) mixing the first semi-finished product and the second semi-finished product, and then developing to obtain the rubber modified asphalt viscosity-reducing deodorant.
The invention provides rubber modified asphalt, which is prepared by heating and mixing raw materials; the raw materials comprise rubber modified asphalt raw materials and the viscosity-reducing deodorant in the technical scheme.
The invention provides a matrix asphalt for producing rubber modified asphalt, which is prepared by heating and mixing raw materials; the raw materials comprise a matrix asphalt raw material and the viscosity-reducing deodorant in the technical scheme.
The invention provides another rubber modified asphalt, which is prepared by heating and mixing raw materials; the raw materials comprise rubber powder and the matrix asphalt in the technical scheme.
Compared with the prior art, the invention provides a rubber modified asphalt viscosity-reducing deodorant and a preparation method and application thereof. The rubber modified asphalt viscosity-reducing deodorant provided by the invention is prepared from the following raw materials in parts by weight: 10-14 parts of polyether polyol; 15-20 parts of polydimethylsiloxane; 30-50 parts of anthracene oil; 8-16 parts of fumed silica; 2-3 parts of triethanolamine; 50-67 parts of rubber oil; 15-20 parts of white oil; 8-10 parts of polyether epoxy resin. The invention provides a high-performance viscosity-reducing deodorant aiming at the common problems in the production and use processes of the existing rubber modified asphalt, and the viscosity-reducing deodorant can reduce the viscosity of the rubber modified asphalt, so that the production, mixing and paving temperatures of the rubber modified asphalt are reduced, the rubber smell and asphalt smoke generated in the production, mixing and paving processes of the rubber modified asphalt are further obviously reduced, and the aging of the asphalt in the processes is relieved. Experimental results show that after the viscosity-reducing deodorant provided by the invention is mixed, the kinematic viscosity of the rubber modified asphalt can be reduced by more than 60%, the temperature for producing, mixing and paving the asphalt can be reduced by 25-40 ℃, the rubber smell and aging of the asphalt in the process are obviously reduced, and the smoke content of the asphalt can be reduced by more than 80%.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a rubber modified asphalt viscosity-reducing deodorant which is prepared from the following raw materials in parts by weight:
the rubber modified asphalt viscosity-reducing deodorant provided by the invention is prepared from the raw materials comprising the components, wherein the polyether polyol comprises but is not limited to polyoxypropylene glycol and/or polytetrahydrofuran diol, preferably a mixture of polyoxypropylene glycol and polytetrahydrofuran diol, and the mass ratio of polyoxypropylene glycol to polytetrahydrofuran diol in the mixture is preferably 1: (0.5-2), more preferably 1: 1; the number average molecular weight of the polyether polyol is preferably 3000-4000, and specifically can be 3000, 3500 or 4000. In the present invention, the content of the polyether polyol in the raw material is 10 to 14 parts by weight, specifically 10 parts by weight, 10.5 parts by weight, 11 parts by weight, 11.5 parts by weight, 12 parts by weight, 12.5 parts by weight, 13 parts by weight, 13.5 parts by weight, or 14 parts by weight.
In the present invention, the number average molecular weight of the polydimethylsiloxane is preferably 50000 to 100000, and specifically may be 50000, 55000, 60000, 65000, 70000, 74000, 80000, 85000, 90000 or 100000. In the present invention, the content of the polydimethylsiloxane in the raw material is 15 to 20 parts by weight, specifically 15 parts by weight, 15.5 parts by weight, 16 parts by weight, 16.5 parts by weight, 17 parts by weight, 17.5 parts by weight, 18 parts by weight, 18.5 parts by weight, 19 parts by weight, 19.5 parts by weight, or 20 parts by weight.
In the present invention, the content of the anthracene oil in the raw material may be 30 to 50 parts by weight, specifically 30 parts by weight, 31 parts by weight, 32 parts by weight, 33 parts by weight, 34 parts by weight, 35 parts by weight, 36 parts by weight, 37 parts by weight, 38 parts by weight, 39 parts by weight, 40 parts by weight, 41 parts by weight, 42 parts by weight, 43 parts by weight, 44 parts by weight, 45 parts by weight, 46 parts by weight, 47 parts by weight, 48 parts by weight, 49 parts by weight, or 50 parts by weight.
In the present invention, the content of the fumed silica in the raw material is 8 to 16 parts by weight, specifically 8 parts by weight, 8.5 parts by weight, 9 parts by weight, 9.5 parts by weight, 10 parts by weight, 10.5 parts by weight, 11 parts by weight, 11.5 parts by weight, 12 parts by weight, 12.5 parts by weight, 13 parts by weight, 13.5 parts by weight, 14 parts by weight, 14.5 parts by weight, 15 parts by weight, 15.5 parts by weight, or 16 parts by weight.
In the invention, the content of the triethanolamine in the raw material is 2 to 3 parts by weight, specifically 2 parts by weight, 2.2 parts by weight, 2.4 parts by weight, 2.6 parts by weight, 2.8 parts by weight or 3 parts by weight.
In the invention, the kinematic viscosity of the rubber oil at 40 ℃ is preferably 100-120 mm2A specific value of 100 mm/s2/s、101mm2/s、102mm2/s、103mm2/s、104mm2/s、105mm2/s、106mm2/s、107mm2/s、108mm2/s、109mm2/s、110mm2/s、111mm2/s、112mm2/s、113mm2/s、114mm2/s、115mm2/s、116mm2/s、117mm2/s、118mm2/s、119mm2/s or 120mm2S; the aromatic hydrocarbon (CA) carbon in the rubber oil preferably accounts for 0.5-5% of the total carbon number of the rubber oil, and specifically can be 0.5%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5% or 5%; the carbon content of the naphthenic hydrocarbon (CN) in the rubber oil is preferably 40-60% of the total carbon number of the rubber oil, and specifically can be 40%, 41%, 42%, 43%, 44%, 45%, 49%, 47%, 48%, 49%, 50%, 51%, 52%, 53%, 54%, 55%, 56%, 57%, 58%, 59% or 60%; the carbon content of paraffin hydrocarbon (CP) in the rubber oil is preferably 40-60% of the total carbon number of the rubber oil, and specifically can be 40%, 41%, 42%, 43%, 44%, 45%, 49%, 47%, 48%, 49%, 50%, 51%, 52%, 53%, 54%, 55%, 56%, 57%, 58%, 59% or 60%; specific classes of the rubber oil include, but are not limited to, KN4010 cycloalkyl rubber oil. In the present invention, the content of the rubber oil in the raw material is 50 to 67 parts by weight, specifically 50 parts by weight, 50.5 parts by weight, 51 parts by weight, 51.5 parts by weight, 52 parts by weight, 52.5 parts by weight, 53 parts by weight, 53.5 parts by weight, 54 parts by weight, 54.5 parts by weight, 55 parts by weight, 55.5 parts by weight, 56 parts by weight, 56.5 parts by weight, 57 parts by weight, 57.5 parts by weight, 58 parts by weight, 58.5 parts by weight, 59 parts by weight, 59.5 parts by weight, 60 parts by weight, 60.5 parts by weight61 parts by weight, 61.5 parts by weight, 62 parts by weight, 62.5 parts by weight, 63 parts by weight, 63.5 parts by weight, 64 parts by weight, 64.5 parts by weight, 65 parts by weight, 65.5 parts by weight, 66 parts by weight, 66.5 parts by weight or 67 parts by weight.
In the present invention, the white oil preferably consists of saturated alkanes and saturated cycloalkanes; the kinematic viscosity of the white oil at 40 ℃ is preferably 50-100 mm2A specific value of 50 mm/s2/s、55mm2/s、60mm2/s、65mm2/s、70mm2/s、71.7mm2/s、75mm2/s、80mm2/s、85mm2/s、90mm2/s、95mm2S or 100mm2And s. In the present invention, the content of the white oil in the raw material is 15 to 20 parts by weight, specifically 15 parts by weight, 15.5 parts by weight, 16 parts by weight, 16.5 parts by weight, 17 parts by weight, 17.5 parts by weight, 18 parts by weight, 18.5 parts by weight, 19 parts by weight, 19.5 parts by weight, or 20 parts by weight.
In the invention, the viscosity of the polyether epoxy resin at 25 ℃ is preferably less than or equal to 120Pa.S, and specifically can be 80Pa.S, 85Pa.S, 90Pa.S, 95Pa.S, 100Pa.S, 105Pa.S, 110Pa.S, 115Pa.S or 120 Pa.S; the epoxy value of the polyether epoxy resin is preferably 0.4-0.6 mol/100g, and specifically may be 0.4mol/100g, 0.41mol/100g, 0.42mol/100g, 0.43mol/100g, 0.44mol/100g, 0.45mol/100g, 0.46mol/100g, 0.47mol/100g, 0.48mol/100g, 0.49mol/100g, 0.5mol/100g, 0.51mol/100g, 0.52mol/100g, 0.53mol/100g, 0.54mol/100g, 0.55mol/100g, 0.56mol/100g, 0.57mol/100g, 0.58mol/100g, 0.59mol/100g or 0.6mol/100 g. In the present invention, the content of the polyether epoxy resin in the raw material is 8 to 10 parts by weight, specifically 8 parts by weight, 8.2 parts by weight, 8.4 parts by weight, 8.6 parts by weight, 8.8 parts by weight, 9 parts by weight, 9.2 parts by weight, 9.4 parts by weight, 9.6 parts by weight, 9.8 parts by weight, or 10 parts by weight.
The invention provides a preparation method of the rubber modified asphalt viscosity-reducing deodorant, which comprises the following steps:
a) mixing polyether polyol, polydimethylsiloxane, anthracene oil and gas-phase silica for development to obtain a first semi-finished product; mixing triethanolamine, rubber oil, white oil and polyether epoxy resin, and developing to obtain a second semi-finished product;
b) and (3) mixing the first semi-finished product and the second semi-finished product, and then developing to obtain the rubber modified asphalt viscosity-reducing deodorant.
In the preparation method of the viscosity-reducing deodorant, a first semi-finished product and a second semi-finished product are prepared firstly. Wherein the first semi-finished product is prepared according to the following method:
polyether polyol, polydimethylsiloxane, anthracene oil and gas-phase silica are mixed and developed to obtain a first semi-finished product.
In the preparation method of the first semi-finished product provided by the invention, the development temperature is preferably 160-200 ℃; the development time is preferably 2-6 h, and specifically can be 4 h. In the present invention, after development is completed, the first semi-finished product obtained is preferably cooled to below 60 ℃.
In the present invention, the second semi-finished product is prepared according to the following method:
and mixing triethanolamine, rubber oil, white oil and polyether epoxy resin, and developing to obtain a second semi-finished product.
In the preparation method of the second semi-finished product provided by the invention, the development temperature is preferably 120-140 ℃; the development time is preferably 1-3 h, and specifically can be 2 h. In the present invention, after development is completed, the second semi-finished product obtained is preferably cooled to below 60 ℃.
After the first semi-finished product and the second semi-finished product are obtained, the first semi-finished product and the second semi-finished product are mixed and developed. Wherein the development temperature is preferably 40-80 ℃, and specifically can be 60 ℃; the development time is preferably 1-3 h, and specifically can be 2 h. After the development is finished, the rubber modified asphalt viscosity-reducing deodorant provided by the invention is obtained.
The invention provides a high-performance viscosity-reducing deodorant aiming at the common problems in the production and use processes of the existing rubber modified asphalt, and the viscosity-reducing deodorant can reduce the viscosity of the rubber modified asphalt, so that the production, mixing and paving temperatures of the rubber modified asphalt are reduced, the rubber smell and asphalt smoke generated in the production, mixing and paving processes of the rubber modified asphalt are further obviously reduced, and the aging of the asphalt in the processes is relieved. Experimental results show that after the viscosity-reducing deodorant provided by the invention is mixed, the kinematic viscosity of the rubber modified asphalt can be reduced by more than 60%, the temperature for producing, mixing and paving the asphalt can be reduced by 25-40 ℃, the rubber smell and aging of the asphalt in the process are obviously reduced, and the smoke content of the asphalt can be reduced by more than 80%.
The invention provides rubber modified asphalt, which is prepared by heating and mixing raw materials; the raw materials comprise rubber modified asphalt raw materials and the viscosity-reducing deodorant in the technical scheme.
The rubber modified asphalt provided by the invention is prepared by heating and mixing raw materials, wherein the raw materials comprise a rubber modified asphalt raw material and the viscosity-reducing deodorant. Wherein the kinematic viscosity (at 178 ℃) of the rubber modified asphalt raw material can be 2.5-3.5 Pa.s, and specifically can be 2.5Pa.s, 2.6Pa.s, 2.7Pa.s, 2.8Pa.s, 2.9Pa.s, 3Pa.s, 3.1Pa.s, 3.2Pa.s, 3.3Pa.s, 3.4Pa.s or 3.5 Pa.s. In the invention, the mass ratio of the rubber modified asphalt raw material to the viscosity-reducing deodorant is preferably (10-30): 0.08, specifically 20: 0.08; the heating and mixing temperature is preferably 120-170 ℃, and specifically can be 150 ℃; the heating and mixing time is preferably 0.5-2 h, and specifically can be 1 h.
According to the invention, a certain amount of the viscosity-reducing deodorant provided by the invention is mixed into the rubber modified asphalt, so that the viscosity of the rubber modified asphalt can be obviously reduced, the mixing and paving temperature of the rubber modified asphalt is reduced, and the generation of rubber smell and asphalt smoke in the mixing and paving processes of the rubber modified asphalt is obviously reduced. Experimental results show that after the viscosity-reducing deodorant provided by the invention is mixed, the kinematic viscosity of the rubber modified asphalt can be reduced by more than 60%, the mixing and paving temperature can be reduced by 25-40 ℃, and asphalt smoke can be reduced by more than 80% in the mixing and paving process.
The invention provides a matrix asphalt for producing rubber modified asphalt, which is prepared by heating and mixing raw materials; the raw materials comprise a matrix asphalt raw material and the viscosity-reducing deodorant in the technical scheme.
The base asphalt provided by the invention is prepared by heating and mixing raw materials, wherein the raw materials comprise a base asphalt raw material and the viscosity-reducing deodorant. Wherein, the base asphalt raw material can be No. 90 base asphalt; the heating and mixing temperature is preferably 100-150 ℃, and specifically can be 130 ℃; the heating and mixing time is preferably 10-30 min, and specifically can be 20 min.
According to the invention, a certain amount of the viscosity-reducing deodorant provided by the invention is mixed into the matrix asphalt, so that the subsequent production, mixing and paving temperatures of the rubber modified asphalt can be obviously reduced, the rubber smell and asphalt smoke generated in the production, mixing and paving processes of the rubber modified asphalt are further obviously reduced, and the aging of the asphalt in the processes is relieved. The experimental result shows that compared with the traditional matrix asphalt, when the matrix asphalt provided by the invention is used as a raw material to produce the rubber modified asphalt, the heating temperature can be reduced by 25-30 ℃, the smell of rubber powder in production can be effectively reduced, and the asphalt aging is reduced.
The invention also provides another rubber modified asphalt which is prepared by heating and mixing the raw materials; the raw materials comprise rubber powder and the matrix asphalt in the technical scheme.
The rubber modified asphalt prepared by the matrix asphalt provided by the invention can obviously reduce the rubber smell and asphalt smoke generated in the production, mixing and paving processes of the rubber modified asphalt and simultaneously relieve the aging of the asphalt in the processes. The experimental result shows that compared with the traditional matrix asphalt, when the matrix asphalt provided by the invention is used as a raw material to produce the rubber modified asphalt, the heating temperature can be reduced by 25-30 ℃, the smell of rubber powder in production can be effectively reduced, and the asphalt aging is reduced.
For the sake of clarity, the following examples are given in detail.
In the following examples of the present application, the polyether polyol used was a mixture of polyoxypropylene diol (number average molecular weight 3500) and polytetrahydrofuran diol (number average molecular weight 3500) in a mass ratio of 1: 1; of the polydimethylsiloxanes usedNumber average molecular weight 74000; the specific type of the adopted rubber oil is KN4010 naphthenic base rubber oil, and the kinematic viscosity (40 ℃) is 109.0mm2The carbon type analysis results are 1.0 percent of CA, 50.0 percent of CN and 49.0 percent of CP; the white oil used consists of saturated alkanes and saturated cycloalkanes and has a kinematic viscosity (40 ℃) of 71.7mm2S; the polyether epoxy resin has a viscosity (25 ℃) of 100mPa.s and an epoxy value of 0.45-0.50 mol/100 g.
Example 1
Preparation of rubber modified asphalt viscosity-reducing deodorant
Step 1: 11kg of polyether polyol, 16kg of polydimethylsiloxane, 32kg of anthracene oil and 9kg of gas-phase silicon dioxide are respectively discharged into a reaction kettle through a metering pump, the reaction kettle is heated by adopting heat conduction oil, is heated to 160-180 ℃, is cooled by a condenser by adopting a cooling circulating water method after being developed for 4 hours, and is discharged into a synthesis reaction kettle after the cooling temperature is lower than 60 ℃.
Step 2: 3kg of triethanolamine, 53kg of rubber oil, 16kg of white oil and 10kg of polyether epoxy resin are respectively discharged into a reaction kettle through a metering pump, the reaction kettle is heated by adopting heat conducting oil to 120-140 ℃, after the development is carried out for 2 hours, the reaction kettle is cooled by adopting a cooling circulating water method through a condenser, and after the cooling temperature is lower than 60 ℃, the reaction kettle is discharged into a synthesis reaction kettle.
And step 3: and (3) heating the semi-finished products prepared in the steps (1) and (2) to 60 ℃ in a synthesis reaction kettle, and developing for 2 hours to prepare the rubber modified asphalt viscosity-reducing deodorant A.
Example 2
Preparation of rubber modified asphalt viscosity-reducing deodorant
Step 1: 14kg of polyether polyol, 18kg of polydimethylsiloxane, 45kg of anthracene oil and 14kg of fumed silica are respectively discharged into a reaction kettle through a metering pump, the reaction kettle is heated by adopting heat conducting oil to 160-180 ℃, after development is carried out for 4 hours, the reaction kettle is cooled by adopting a cooling circulating water method through a condenser, and after the cooling temperature is lower than 60 ℃, the reaction kettle is discharged to a synthesis reaction kettle.
Step 2: 3kg of triethanolamine, 58kg of rubber oil, 18kg of white oil and 10kg of polyether epoxy resin are respectively discharged into a reaction kettle through a metering pump, the reaction kettle is heated by adopting heat conducting oil to 120-140 ℃, after the growth is carried out for 2 hours, the reaction kettle is cooled by adopting a cooling circulating water method through a condenser, and after the cooling temperature is lower than 60 ℃, the reaction kettle is discharged into a synthesis reaction kettle.
And step 3: and (3) heating the semi-finished products prepared in the steps (1) and (2) to 60 ℃ in a synthesis reaction kettle, and developing for 2 hours to prepare the rubber modified asphalt viscosity-reducing deodorant B.
Example 3
Preparation of rubber modified asphalt
And (2) heating 20kg of rubber modified asphalt to 150 ℃, adding 0.08kg of the viscosity-reducing deodorant A prepared in the example 1 into the rubber modified asphalt, and stirring for 1 hour to prepare the viscosity-reducing environment-friendly rubber modified asphalt.
The technical indexes of the viscosity-reducing environment-friendly rubber modified asphalt and the rubber modified asphalt are detailed in a table 1:
TABLE 1 viscosity-reducing environmental-friendly rubber modified asphalt and rubber modified asphalt technical index comparison table
Example 4
Preparation of rubber modified asphalt
The viscosity-reducing deodorant B prepared in the example 2 is added into No. 90 base asphalt according to 0.5 wt% (weight of rubber modified asphalt), and is stirred for 20 minutes at the temperature of more than 130 ℃, the produced asphalt is used as the base asphalt for producing the rubber modified asphalt, the heating temperature of the base asphalt during producing the rubber modified asphalt is reduced by 25-30 ℃ compared with the heating temperature of the base asphalt without adding the viscosity-reducing deodorant B, the smell of rubber powder during production can be effectively reduced, and the aging of the asphalt is reduced.
Example 5
The viscosity-reducing environment-friendly rubber modified asphalt prepared in example 3 of the present invention and the rubber modified asphalt without the viscosity-reducing deodorant a in example 3 were subjected to a mixing and forming test, respectively, according to a method specified in technical specification for road asphalt pavement construction (JTG F40-2004), and the asphalt mixture performance was evaluated. Wherein, the mineral aggregate gradation of the asphalt mixture is shown in the table 2:
TABLE 2 asphalt mixture mineral aggregate gradation table
The concrete mixing process is as follows:
1) viscosity-reducing environment-friendly rubber modified asphalt mixture:
a. weighing stones according to the set amount, heating the stones in an oven at 160 ℃ for 4 hours, heating the viscosity-reducing environment-friendly rubber modified asphalt prepared in example 3 in an oven at 140 ℃ for 2 hours, and setting the temperature of a mixer at 150 ℃.
b. Adding the coarse stone material into a mixer at a set temperature, and uniformly stirring for 3.5 minutes.
c. Adding the viscosity-reducing environment-friendly rubber modified asphalt prepared in the example 3 into a mixer, mixing for 2 minutes, adding mineral powder, and continuously mixing for 3 minutes at the temperature of 150 ℃.
d. The oil-stone ratio (the percentage of the mass ratio of asphalt to mineral aggregate in the asphalt concrete) was 6.6%.
2) Rubber modified asphalt mixture:
a. the stone materials are weighed according to the set amount and heated in an oven at 210 ℃ for 4 hours, the rubber modified asphalt which is not mixed with the viscosity-reducing deodorant A and is prepared in example 3 is heated in an oven at 180 ℃ for 2 hours, and the temperature of a mixer is set to 190 ℃.
b. Adding the coarse stone material into a mixer at a set temperature, and uniformly stirring for 3.5 minutes.
c. Adding the rubber modified asphalt which is not mixed with the viscosity-reducing deodorant A and is obtained in the example 3 into a stirring machine, stirring for 2.5 minutes, adding the mineral powder, and continuously stirring for 3 minutes at the temperature of 190 ℃.
d. The oil-stone ratio (the percentage of the mass ratio of the asphalt to the mineral aggregate in the asphalt concrete) is 6.7 percent
The results of the performance evaluation are shown in Table 3:
TABLE 3 asphalt mixture Performance test results
| Test items | Viscosity-reducing environment-friendly rubber modified asphalt mixture | Rubber modified asphalt mixture |
| Degree of dynamic stability (times/mm) | 6597 | 6723 |
| Low temperature bending failure Strain (μ ε) | 5694 | 5465 |
| Stability of immersion residue (%) | 93.2 | 92.6 |
| Freeze-thaw split residual intensity ratio (%) | 91.7 | 91 |
| Water permeability coefficient (m L/min) | 0 | 0 |
| Asphalt leakage loss △ m (%) | 0.06 | 0.05 |
| Asphalt mixture fly loss △ S (%) | 4.2 | 5.2 |
| Asphalt smoke | Compared with the rubber modified asphalt mixture, the reduction is 80 percent | Is normal |
Test data show that under the condition that the mixing and forming temperature of the rubber modified asphalt mixture prepared by applying the viscosity-reducing environment-friendly rubber modified asphalt mixture is relatively obviously reduced by 25-40 ℃, all performance indexes meet the requirements of technical Specification for road asphalt pavement construction (JTG F40-2004).
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The rubber modified asphalt viscosity-reducing deodorant is prepared from the following raw materials in parts by weight:
the polyether polyol is a mixture of polyoxypropylene glycol and polytetrahydrofuran glycol.
2. The viscosity-reducing deodorant according to claim 1, wherein the polyether polyol has a number average molecular weight of 3000 to 4000.
3. The viscosity-reducing deodorant according to claim 1, wherein the polydimethylsiloxane has a number-average molecular weight of 50000 to 100000.
4. The viscosity-reducing deodorant according to claim 1, wherein the kinematic viscosity of the rubber oil at 40 ℃ is 100-120 mm2/s。
5. The viscosity-reducing deodorant according to claim 1, wherein the kinematic viscosity of the white oil at 40 ℃ is 50 to 100mm2/s。
6. The viscosity-reducing deodorant according to claim 1, wherein the viscosity of the polyether epoxy resin at 25 ℃ is 120 Pa-S or less; the epoxy value of the polyether epoxy resin is 0.4-0.6 mol/100 g.
7. A method for preparing the rubber modified asphalt viscosity-reducing deodorant of claim 1, comprising the following steps:
a) mixing polyether polyol, polydimethylsiloxane, anthracene oil and gas-phase silica for development to obtain a first semi-finished product; mixing triethanolamine, rubber oil, white oil and polyether epoxy resin, and developing to obtain a second semi-finished product;
b) and (3) mixing the first semi-finished product and the second semi-finished product, and then developing to obtain the rubber modified asphalt viscosity-reducing deodorant.
8. A rubber modified asphalt is prepared by heating and mixing raw materials; the raw materials comprise rubber modified asphalt raw materials and the viscosity-reducing deodorant of any one of claims 1-6.
9. A matrix asphalt for producing rubber modified asphalt is prepared by heating and mixing raw materials; the raw materials comprise a matrix asphalt raw material and the viscosity-reducing deodorant of any one of claims 1-6.
10. A rubber modified asphalt is prepared by heating and mixing raw materials; the feedstock comprising rubber crumb and the matrix asphalt of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810541523.5A CN108659558B (en) | 2018-05-30 | 2018-05-30 | Rubber modified asphalt viscosity-reducing deodorant and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810541523.5A CN108659558B (en) | 2018-05-30 | 2018-05-30 | Rubber modified asphalt viscosity-reducing deodorant and preparation method and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108659558A CN108659558A (en) | 2018-10-16 |
| CN108659558B true CN108659558B (en) | 2020-08-04 |
Family
ID=63774604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810541523.5A Active CN108659558B (en) | 2018-05-30 | 2018-05-30 | Rubber modified asphalt viscosity-reducing deodorant and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108659558B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110387131A (en) * | 2019-07-22 | 2019-10-29 | 尧棋 | A kind of high storage stability rubber and plastic alloy asphalt modifier and preparation method thereof |
| CN113416421B (en) * | 2021-05-19 | 2022-05-17 | 山东高速集团有限公司创新研究院 | Preparation method and application of bio-based deodorant |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2076824A (en) * | 1980-05-31 | 1981-12-09 | Mitsubishi Petrochemical Co | Epoxy resin bitumen material composition |
| CN1345360A (en) * | 1999-03-12 | 2002-04-17 | 欧文斯科尔宁格公司 | Method of reducing fumes from vessel of molten asphalt |
| CN101842426A (en) * | 2007-08-09 | 2010-09-22 | Air&D有限公司 | Method for reducing odor in bitumen |
| 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 |
-
2018
- 2018-05-30 CN CN201810541523.5A patent/CN108659558B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2076824A (en) * | 1980-05-31 | 1981-12-09 | Mitsubishi Petrochemical Co | Epoxy resin bitumen material composition |
| CN1345360A (en) * | 1999-03-12 | 2002-04-17 | 欧文斯科尔宁格公司 | Method of reducing fumes from vessel of molten asphalt |
| CN101842426A (en) * | 2007-08-09 | 2010-09-22 | Air&D有限公司 | Method for reducing odor in bitumen |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108659558A (en) | 2018-10-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108659558B (en) | Rubber modified asphalt viscosity-reducing deodorant and preparation method and application thereof | |
| CN108822563B (en) | Clarithromi asphalt dry-process modifier and application thereof | |
| CN108892956B (en) | Biological epoxy asphalt and preparation method and application thereof | |
| CN102504556B (en) | High-grade road asphalt prepared from coal tar pitch | |
| CN103834423A (en) | Modified coal tar pitch and preparation method thereof | |
| CN106519715B (en) | A kind of trench oil base modification biological pitch, biological asphalt mixture and preparation method thereof | |
| CN112225491A (en) | Fiber-modified SMA-13 asphalt mixture with excellent long-term performance | |
| CN110951268A (en) | Modified asphalt composition with excellent high and low temperature performance and preparation method thereof | |
| CN106046813A (en) | PG (performance graded) compound asphalt modifier and modified asphalt prepared from same | |
| CN101348350A (en) | Waste rubber powder composite modified asphalt and preparation thereof | |
| EA019389B1 (en) | Modifying composition for asphalt-concrete mixtures and process for preparation thereof | |
| CN114656793A (en) | PPA (polyphthalamide) -based compounded high-toughness SBS (styrene butadiene styrene) modified asphalt regenerant and preparation method thereof | |
| Wang et al. | Study on conventional and rheological properties of corn stalk bioasphalt/PPA composite modified asphalt | |
| CN106082792B (en) | Composite asphalt cold-patch material and preparation method thereof | |
| AU2004251888B2 (en) | Asphalt-epoxy resin compositions | |
| CN113024982B (en) | Oil-filled SBS (styrene-butadiene-styrene) and preparation method and application thereof | |
| CN112852176B (en) | High-modulus asphalt and preparation method thereof | |
| CN114804722A (en) | High-performance rubber asphalt mixture based on soft and hard asphalt compounding, and preparation method and application thereof | |
| CN111349346A (en) | Multifunctional modified asphalt and preparation method thereof | |
| CN106675051B (en) | Waste rubber powder-stored modified asphalt in alpine regions and preparation method thereof | |
| CN115011129B (en) | USP multifunctional composite regenerated modified asphalt mixture and preparation method thereof | |
| CN114702265B (en) | Ultra-thin wearing layer mixture for road preventive maintenance and preparation and construction method thereof | |
| CN112745686B (en) | Composite cementing material for frozen earth pavement and preparation method thereof | |
| CN102863679A (en) | Composite asphalt modified high modulus agent and preparation and application methods thereof | |
| CN110655797B (en) | Preparation method of environment-friendly rubber asphalt |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220707 Address after: 113000 Kangle village, Huiyuan Township, Shuncheng District, Fushun City, Liaoning Province Patentee after: Fushun Yuanda Petrochemical Auxiliaries Co.,Ltd. Address before: 130021 No. 689 worker peasant Road, Jilin, Changchun Patentee before: Luan Hai |