CN110577749A - Road asphalt and preparation method thereof - Google Patents
Road asphalt and preparation method thereof Download PDFInfo
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- CN110577749A CN110577749A CN201910790684.2A CN201910790684A CN110577749A CN 110577749 A CN110577749 A CN 110577749A CN 201910790684 A CN201910790684 A CN 201910790684A CN 110577749 A CN110577749 A CN 110577749A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- 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
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- Civil Engineering (AREA)
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- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Road Paving Structures (AREA)
Abstract
The invention belongs to the field of materials, and discloses road asphalt which comprises the following components in parts by weight: 50-80 parts of petroleum asphalt, 10-18 parts of coking oil, 10-30 parts of condensate oil, 1-3 parts of circulating oil, 1-3 parts of heat conduction oil, 0.5-2.5 parts of asphalt regenerant and 0.5-2 parts of viscosity reducer; the molar ratio of C to H in the petroleum asphalt is 0.86-0.88. The road asphalt prepared by the invention can still keep good adhesive force and permeability to sand and stone at 60 ℃, is not easy to age, has long service time in roads and is not easy to crack and fall off; the prepared road asphalt has the shelf life of 3 years at normal temperature, the preparation process is simple, and the environment is not polluted in the preparation process.
Description
Technical Field
The invention belongs to the field of materials, and particularly relates to road asphalt and a preparation method thereof.
Background
The asphalt is classified into petroleum asphalt, coal asphalt and natural asphalt. Petroleum pitch is generally the residue of crude oil distillation, coal pitch is generally the by-product of coking, and natural pitch is formed according to particular natural climatic conditions. The method is widely applied to expressways and urban roads.
The asphalt road in the prior art is easy to have the problems of road surface aging, cracks, pitted surfaces and the like in the use time, and the main reasons are that the used road asphalt is easy to age, the adhesion between the road asphalt and road sand and stone is poor, and the permeability is poor, particularly, the road asphalt is easy to soften when the temperature of the road surface is too high in summer, for example, the road asphalt at 55 ℃, and vehicles come and go to extrude, so that the road asphalt is easy to deform and fall off.
Therefore, it is necessary to provide a road asphalt which can maintain good adhesion to sand and stone and good permeability at high temperature, is not easy to fall off, is not easy to age and has long service life.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides road asphalt and a preparation method thereof. The road asphalt can still maintain good adhesive force and permeability to sand and stones at 60 ℃, is not easy to age, has long service time in roads, and is not easy to crack and fall off.
the road asphalt comprises the following components in parts by weight:
the molar ratio of C to H in the petroleum asphalt is 0.86-0.88.
Preferably, the road asphalt comprises the following components in parts by weight:
Preferably, the viscosity of the petroleum asphalt at 135 ℃ is 0.1-2 pas.
The petroleum asphalt is composed of alkane, cycloalkane and aromatic hydrocarbon.
Preferably, the petroleum asphalt is light asphalt (model number 180 provided by mao brand division of petrochemical corporation, ltd., china).
Preferably, the content of the phenol and the phenol derivative in the coking oil is 10-30% by mass percent.
Preferably, C in the condensate oil5-C8the content of the hydrocarbon mixture (comprising alkane, alkene and alkyne) is 80-90% by mass percent.
The condensate oil also contains thiophene, mercaptan and thioether substances.
Preferably, the sulfur content of the cycle oil is less than 0.9% by mass.
The circulating oil is a hydrocarbon mixture obtained by catalytically cracking crude oil.
preferably, the density of the heat transfer oil is 0.87-0.89g/cm3。
Preferably, the heat transfer oil is one of alkylbenzene type heat transfer oil (mainly including a compound having a benzene ring with a branched chain of paraffin), alkyl naphthalene type heat transfer oil (a compound having a benzene ring with a branched chain of paraffin), and alkyl biphenyl type heat transfer oil (a compound having a biphenyl ring with a branched chain of alkyl).
The viscosity reducer is prepared by reacting methyl chlorosilane, polyacrylonitrile and fluorinated alkyl siloxane at the temperature of 150-180 ℃ under the condition that organic tin is used as a catalyst.
Preferably, the ratio of the methyl chlorosilane to the polyacrylonitrile to the fluorinated alkyl siloxane to the organic tin as the catalyst is (0.1-3): (0.1-3): 1: (0.01-0.2).
Preferably, the density of the viscosity reducer is 1.06-1.08g/cm3。
The asphalt regenerant is obtained by distilling crude oil under reduced pressure at the temperature of 320-350 ℃ and the pressure of 5-6 KPa.
The crude oil has a density of 0.8-0.9g/cm3The viscosity at 25 ℃ is 30-60 mPas.
A preparation method of road asphalt comprises the following steps:
Weighing the components according to the formula ratio, heating and melting the petroleum asphalt, adding the condensate oil, the circulating oil, the heat conduction oil and the coking oil for mixing, adding the asphalt regenerant and the viscosity reducer, and stirring to obtain the road asphalt.
Preferably, the stirring speed is 300-500 r/min, and the stirring time is 0.5-1 h.
The stirring speed of the stirring also has a certain enhancing effect on the adhesive force of the road asphalt prepared by the invention.
Compared with the prior art, the invention has the following beneficial effects:
(1) The proper petroleum asphalt, the proper coking oil and the proper heat conducting oil are selected, so that the road asphalt disclosed by the invention can still keep good adhesion and permeability to sand and stone at the temperature of 60 ℃, is not easy to age, is long in service time in a road and is not easy to crack and fall off.
(2) The quality guarantee period of the road asphalt can reach 3 years at normal temperature.
(3) The preparation process of the road asphalt is simple, and the preparation process does not pollute the environment.
Detailed Description
In order to make the technical solutions of the present invention more apparent to those skilled in the art, the following examples are given for illustration. It should be noted that the following examples are not intended to limit the scope of the claimed invention.
the petroleum asphalt used in the following examples is provided by Zhonghai asphalt, Michelson division, China petrochemical Co., Ltd., or Mount Foshan Petroleum-rich oil Co., Ltd., the asphalt recycling agent is provided by Liaoning Taiyu petrochemical Co., Ltd., or Hubei Pozu energy science and technology Co., Ltd., and the viscosity reducing agent is provided by Suzhou Fu Source Biotechnology Co., Ltd., or Quanzhou Hai New Material Co., Ltd.).
Example 1
The road asphalt comprises the following components in parts by weight:
the molar ratio of C to H in the petroleum asphalt is 0.87.
The viscosity of the petroleum asphalt at 135 ℃ is 0.8 Pa.s.
The petroleum asphalt is composed of alkane, cycloalkane and aromatic hydrocarbon.
The content of phenol and phenol derivatives in the coking oil is 20-22% by mass percent.
C in the condensate5-C8The content of the hydrocarbon mixture (including alkane, alkene and alkyne) in the oil-water separator was 83% by mass.
The condensate oil also contains thiophene, mercaptan and thioether substances.
The sulfur content of the circulating oil was 0.1% by mass.
The circulating oil is a hydrocarbon mixture obtained by catalytically cracking crude oil.
The density of the heat transfer oil is 0.88g/cm3。
The heat conduction oil is alkyl naphthalene type heat conduction oil (a compound with a benzene ring connected with an alkane branched chain).
The viscosity reducer is prepared by reacting methyl chlorosilane, polyacrylonitrile and fluorinated alkyl siloxane at 160 ℃ under the condition of taking organic tin as a catalyst.
The asphalt regenerant is obtained by distilling crude oil under reduced pressure at 340 ℃ and under the pressure of 5 KPa.
The crude oil has a density of 0.85g/cm3The viscosity at 25 ℃ was 40 mPas.
A preparation method of road asphalt comprises the following steps:
weighing the components according to the formula ratio, heating and melting the petroleum asphalt, adding the condensate oil, the circulating oil, the heat conduction oil and the coking oil for mixing, adding the asphalt regenerant and the viscosity reducer, and stirring to obtain the road asphalt.
The stirring speed was 350 rpm and the stirring time was 0.5 hour.
Example 2
the road asphalt comprises the following components in parts by weight:
The viscosity of the petroleum asphalt at 135 ℃ is 0.8 Pa.s.
the petroleum asphalt is composed of alkane, cycloalkane and aromatic hydrocarbon.
The petroleum asphalt is light asphalt (provided by mao Ming Branch of China petrochemical Co., Ltd., model number 180 #).
The content of phenol and phenol derivatives in the coking oil is 25 percent by mass.
C in the condensate5-C8The content of the hydrocarbon mixture (including alkane, alkene and alkyne) is 88 percent by mass.
The condensate oil also contains thiophene, mercaptan and thioether substances.
The sulfur content of the circulating oil was 0.3% by mass.
The circulating oil is a hydrocarbon mixture obtained by catalytically cracking crude oil.
The density of the heat transfer oil is 0.89g/cm3。
The heat conduction oil is alkylbenzene type heat conduction oil (the main component is a compound with benzene ring attached with paraffin branched chain).
The viscosity reducer is prepared by reacting methyl chlorosilane, polyacrylonitrile and fluorinated alkyl siloxane at 170 ℃ under the condition of taking organic tin as a catalyst.
The density of the viscosity reducer is 1.08g/cm3。
the asphalt regenerant is obtained by distilling crude oil under reduced pressure at 350 ℃ and 5 KPa.
The crude oil has a density of 0.88g/cm3The viscosity at 25 ℃ was 55 mPas.
A preparation method of road asphalt comprises the following steps:
weighing the components according to the formula ratio, heating and melting the petroleum asphalt, adding the condensate oil, the circulating oil, the heat conduction oil and the coking oil for mixing, adding the asphalt regenerant and the viscosity reducer, and stirring to obtain the road asphalt.
The stirring speed of the stirring is 400 rpm, and the stirring time is 0.6 hour.
Example 3
The road asphalt comprises the following components in parts by weight:
The molar ratio of C to H in the petroleum asphalt is 0.86.
The viscosity of the petroleum asphalt at 135 ℃ is 1.8 Pa.s.
The petroleum asphalt is composed of alkane, cycloalkane and aromatic hydrocarbon.
the content of phenol and phenol derivatives in the coking oil is 26% by mass.
C in the condensate5-C8The content of the hydrocarbon mixture (including alkane, alkene and alkyne) in the oil-water separator is 84% by mass.
The condensate oil also contains thiophene, mercaptan and thioether substances.
The sulfur content of the circulating oil was 0.4% by mass.
The circulating oil is a hydrocarbon mixture obtained by catalytically cracking crude oil.
The density of the heat transfer oil is 0.89g/cm3。
The heat conducting oil is one of alkyl biphenyl type heat conducting oils (compounds of which biphenyl rings are connected with alkyl branched chains).
The viscosity reducer is prepared by reacting methyl chlorosilane, polyacrylonitrile and fluorinated alkyl siloxane at 160 ℃ under the condition of taking organic tin as a catalyst.
The density of the viscosity reducer is 1.07g/cm3。
The asphalt regenerant is obtained by distilling crude oil under reduced pressure at 340 ℃ and under the pressure of 6 KPa.
The crude oil has a density of 0.9g/cm3The viscosity at 25 ℃ was 40 mPas.
a preparation method of road asphalt comprises the following steps:
Weighing the components according to the formula ratio, heating and melting the petroleum asphalt, adding the condensate oil, the circulating oil, the heat conduction oil and the coking oil for mixing, adding the asphalt regenerant and the viscosity reducer, and stirring to obtain the road asphalt.
The stirring speed of the stirring is 450 revolutions per minute, and the stirring time is 0.7 hour.
Comparative example 1
Compared with example 1, the petroleum asphalt in comparative example 1 was replaced with commercial coal asphalt, and the remaining components and preparation process were the same as in example 1.
Comparative example 2
In comparison with example 1, comparative example 2 does not add coker oil, and the remaining components and preparation process are the same as in example 1.
Comparative example 3
Compared with example 1, the comparative example 3 does not add heat transfer oil, and the rest components and preparation method are the same as example 1.
Comparative example 4
Compared with the example 1, the petroleum asphalt in the comparative example 4 is 90 parts, the coking oil is 5 parts, the condensate oil is 5 parts, the stirring speed in the preparation process of the road asphalt is 100 revolutions per minute, the stirring time is 0.5 hour, and the rest components and the preparation process are the same as the example 1.
Product effectiveness testing
The road asphalt obtained in examples 1 to 3 and comparative examples 1 to 4 and a commercially available road asphalt (commercially available road asphalt containing petroleum asphalt but not containing coking oil and heat transfer oil) were mixed with gravel and sand for paving a road, and the mixture was simulated into a road, and then subjected to a continuous back-and-forth rubbing test at 60 ℃ under a pressure of 500Kg for 3 days to observe whether or not the road asphalt was separated from the gravel and calculated by dividing the area where the road asphalt was separated from the simulated road by the total area of the simulated road by 100% (expressed as a separation area ratio), and the results are shown in table 1 (the larger the separation area ratio data in the table, the larger the separation area, the lower the adhesion of the road asphalt and the lower the permeability of the road asphalt).
Table 1:
As can be seen from the data in Table 1, the road asphalts prepared in examples 1-3 have better adhesion and permeability to sand and stone and are less prone to falling off at 60 ℃. In contrast, the road asphalt prepared in comparative examples 1 to 4 and the road asphalt on the market have poor adhesion and permeability to sand and stones under the same conditions and are easy to fall off.
On the basis of example 1, if the road asphalt is prepared by only changing the phenol and phenol derivative contents in the tar to 5% by mass, the area of the asphalt to be peeled off is 0.5% by the same conditions as described above.
In addition, the road asphalt prepared in the examples 1 to 3 is used for high-speed kilometers, and obvious problems of road surface aging, cracks and pitted surfaces do not appear after the road asphalt is continuously used for two years. However, using commercially available road asphalt for high speed kilometers, there is a slight apparent pitted problem with continuous use for one year.
Further, when the road asphalt obtained in example 1 and a commercially available road asphalt were stored at room temperature for 3 years and subjected to a continuous back-and-forth rubbing test at 60 ℃ for 3 days under a pressure of 500Kg, the test conditions showed that the road asphalt obtained in example 1 had an increase in the peeled area of only 0.2% and the commercially available road asphalt had an increase in the peeled area of 2%.
Claims (10)
1. The road asphalt is characterized by comprising the following components in parts by weight:
The molar ratio of C to H in the petroleum asphalt is 0.86-0.88.
2. The road asphalt of claim 1, wherein the petroleum asphalt has a viscosity of 0.1 to 2 Pa-s at 135 ℃.
3. The road asphalt of claim 1, wherein the coking oil contains 10-30% by mass of phenols and phenol derivatives.
4. The road asphalt of claim 1, wherein C is in the condensate5-C8The content of the hydrocarbon mixture is 80-90% by mass.
5. The road asphalt of claim 1, wherein the sulfur content of the circulating oil is less than 0.9% by mass.
6. The road asphalt of claim 1, wherein the density of the heat transfer oil is 0.87-0.89g/cm3。
7. The road asphalt of claim 1, wherein the thermal oil is one of alkylbenzene type thermal oil, alkyl naphthalene type thermal oil, and alkyl biphenyl type thermal oil.
8. The road asphalt as claimed in claim 1, wherein the viscosity reducer is prepared by reacting methyl chlorosilane, polyacrylonitrile and fluorinated alkyl siloxane under the condition of organotin as catalyst at 180 ℃ and 150-.
9. The road asphalt as claimed in claim 1, wherein the asphalt regenerant is obtained by vacuum distillation of crude oil at a temperature of 320-350 ℃ and a pressure of 5-6 KPa.
10. A process for the preparation of the road asphalt according to any one of claims 1 to 9, characterized by comprising the following steps:
Weighing the components according to the formula ratio, heating and melting the petroleum asphalt, adding the condensate oil, the circulating oil, the heat conduction oil and the coking oil, mixing, adding the asphalt regenerant and the viscosity reducer, and stirring to obtain the road asphalt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910790684.2A CN110577749A (en) | 2019-08-26 | 2019-08-26 | Road asphalt and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910790684.2A CN110577749A (en) | 2019-08-26 | 2019-08-26 | Road asphalt and preparation method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102617968A (en) * | 2012-03-23 | 2012-08-01 | 重庆鹏方路面工程技术研究院有限公司 | Cooling reclaiming agent for road and preparation method thereof |
| CN103804924A (en) * | 2012-11-07 | 2014-05-21 | 中国石油化工股份有限公司 | Normal temperature repair asphalt solution additive and preparation method thereof |
| US20190040258A1 (en) * | 2017-08-04 | 2019-02-07 | William B. Coe | Inter-penetrating elastomer network derived from ground tire rubber particles |
| CN109439001A (en) * | 2018-10-18 | 2019-03-08 | 江苏楚鼎建设工程有限公司 | A kind of pavement construction pitch with high and low temperature resistance |
-
2019
- 2019-08-26 CN CN201910790684.2A patent/CN110577749A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102617968A (en) * | 2012-03-23 | 2012-08-01 | 重庆鹏方路面工程技术研究院有限公司 | Cooling reclaiming agent for road and preparation method thereof |
| CN103804924A (en) * | 2012-11-07 | 2014-05-21 | 中国石油化工股份有限公司 | Normal temperature repair asphalt solution additive and preparation method thereof |
| US20190040258A1 (en) * | 2017-08-04 | 2019-02-07 | William B. Coe | Inter-penetrating elastomer network derived from ground tire rubber particles |
| CN109439001A (en) * | 2018-10-18 | 2019-03-08 | 江苏楚鼎建设工程有限公司 | A kind of pavement construction pitch with high and low temperature resistance |
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Application publication date: 20191217 |
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