CN105419362B - Modified coal pitch of stable performance and preparation method thereof under a kind of low temperature - Google Patents
Modified coal pitch of stable performance and preparation method thereof under a kind of low temperature Download PDFInfo
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- CN105419362B CN105419362B CN201510991941.0A CN201510991941A CN105419362B CN 105419362 B CN105419362 B CN 105419362B CN 201510991941 A CN201510991941 A CN 201510991941A CN 105419362 B CN105419362 B CN 105419362B
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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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- Chemical Kinetics & Catalysis (AREA)
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- Compositions Of Macromolecular Compounds (AREA)
- Working-Up Tar And Pitch (AREA)
Abstract
The present invention relates to modified coal pitch of stable performance under a kind of low temperature and preparation method thereof.Each raw material composition of modified coal pitch includes 30 90 parts of coal tar pitch, 10 70 parts of asphalt, 15 parts of phthalic acid ester, 1 10 parts of polyethylene glycol, 03 parts of polyalphaolefin, 1 10 parts of powder styrene butadiene rubber in mass ratio.Compared with prior art, the present invention has advantages below：The addition of polyalphaolefin is advantageous to improve the stability, uniformity and cryogenic property of modified coal pitch, reduces modified coal pitch as performance caused by temperature and SBR composition transfers is unstable；Correlated performance of its 5 DEG C of ductility performances considerably beyond current modified coal pitch；Performance has reached the technical requirements on SBS modified oil pitch；It is more cheap compared to oil matrix asphalt price, cryogenic property is outstanding；Equipment used in preparation process is simple, can reduce the cost in production process with general with the equipment of current modified oil pitch.
Description
Technical field
The invention belongs to coal tar pitch modification technical field, it particularly relates to the modification to stable performance under a kind of low temperature
Coal tar pitch and preparation method thereof.
Background technology
Increasingly risen recently as the price of asphalt, the increasingly increase of constructing road cost, people begin to focus on
Other good bi tumenf orr oad alternative materials of inexpensive performance are made, and wherein coal tar pitch receives people as the road-making material of early stage
Concern.But environmental pollution is serious when coal tar pitch low temperature embrittlement, poor ductility and construction, effectively should can not obtain always
With.It is domestic at present to be studied on coal tar pitch pavement performance, it is concentrated mainly on two aspects：First, improve the pavement performance of coal tar pitch
Index, especially prolong toughness；Second, the pollutant component of reduction and elimination coal tar pitch, mainly polycyclic aromatic hydrocarbon (PAH) class material.Mesh
Main flow still mixes coal tar pitch and asphalt among the modification of preceding coal tar pitch, and then it is respective excellent to have given play to two kinds of pitches
Gesture, the method for modifying for also having some coal tar pitch is to use for reference petroleum asphalt modified method, by mixing some organic matters or nanometer
Material lifts the performance of modified coal pitch.
Coal tar pitch is compared to asphalt has softening point height, adhesive property is good, cost is cheap, rutting resistance is strong, resistance to
Ageing properties are strong and the advantages that wear resistance is good, but coal tar pitch low-temperature embrittleness causes coal tar pitch to be difficult wide in the area such as north
General application.And coal tar pitch is narrow as the byproduct application of coal tar industry, a large amount of coal tar pitch are unsalable, cause great resource
Waste.
At present, its low-temperature embrittleness of most modified coal pitch, ductility are poor, are extremely difficult to the property of oil matrix pitch
Can, and differing bigger compared with modified oil pitch, this greatly restricts coal tar pitch extensive use.At present on coal tar pitch low temperature
The method of performance boost mainly directly adds some modifying agent in coal tar pitch, its low temperature ductility has been lifted, but
It is that the current cryogenic property for studying modified coal pitch in report is few to reach《Standard specification for construction and acceptance of highway asphalt pavement》
The technical requirements of modified oil pitch in (JTG F40-2004), or even it is difficult to the technology for meeting high-grade highway petrochina pitch
It is required that.Therefore working out a kind of good modified coal pitch of low temperature ductility energy has important social and economic benefit.
The content of the invention
In order to solve the above technical problems, the invention provides a kind of drip of the modified coal of cost stable performance in a low temperature of cheap
Green grass or young crops and preparation method thereof.
The modified coal pitch of stable performance under a kind of low temperature of the present invention, each raw material composition of modified coal pitch are pressed
Mass ratio includes coal tar pitch 30-90 parts, asphalt 10-70 parts, phthalic acid ester 1-5 parts, polyethylene glycol 1-10 parts, poly- α
Alkene 0-3 parts, powder styrene butadiene rubber 1-10 parts.
The modified coal pitch of stable performance under a kind of low temperature of the present invention, the asphalt are 70# asphalt
With 90# asphalt.
The modified coal pitch of stable performance under a kind of low temperature of the present invention, the molecular weight of the polyethylene glycol is 400,
600th, the one or several kinds in 800,1000,1200,1500.
The modified coal pitch of stable performance under a kind of low temperature of the present invention, the polyalphaolefin include PAO2,
One or more in PAO2.5, PAO4, PAO5, PAO6, PAO7, PAO8, PAO9, PAO10, PAO25.
The modified coal pitch of stable performance under a kind of low temperature of the present invention, each raw material composition of modified coal pitch are pressed
Mass parts also include 2 parts of stem of noble dendrobium fat element.
The preparation method of modified coal pitch of the present invention, the preparation method concretely comprise the following steps：1) by coal tar pitch sum
Asphalt heats 1-4h in 100~120 DEG C, then weighs coal tar pitch and asphalt is mixed and added in stirred tank,
Heat and mechanical agitation is to 130-200 DEG C, constant temperature stirs 5-30min；2) phthalic acid ester and polyethylene glycol are weighed, is slowly added
Enter into above-mentioned stirred tank, then weigh polyalphaolefin and be added in stirred tank, continue constant temperature stirring 5-30min；3) stirred tank is added
Heat arrives 160-200 DEG C, adds powder styrene butadiene rubber, using 1000-6000rpm high speed shears, makes asphalt mixture in stirred tank
Temperature is maintained between 170-200 DEG C, constant temperature constant speed 30~120min of high speed shear, is then naturally cooled to room temperature, that is, is prepared
Obtain modified coal pitch.
Compared with prior art, the modified coal pitch of stable performance has advantages below under low temperature of the present invention：Add
Adding polyalphaolefin and esters, the addition of polyalphaolefin is advantageous to improve the stability, uniformity and cryogenic property of modified coal pitch,
Modified coal pitch is reduced as performance caused by temperature and SBR composition transfers is unstable；Its 5 DEG C of ductility performances are considerably beyond mesh
The correlated performance of preceding modified coal pitch；Performance reaches《Standard specification for construction and acceptance of highway asphalt pavement》(JTG F40-2004) on
The technical requirements of SBS modified oil pitch；It is more cheap compared to oil matrix asphalt price, cryogenic property is outstanding；Prepared
Equipment used in journey is simple, it is not necessary to and purchase again or be related to new equipment, can be with the equipment of current modified oil pitch
It is general, greatly reduce the cost in production process.
Embodiment
With reference to the modified coal pitch and its system of specific embodiment stable performance in a low temperature of cheap to the cost
Preparation Method is described further, but protection scope of the present invention is not limited to this.
Embodiment 1
Medium temperature coal pitch and 70# Royal Dutch Shells pitch are heated into 4h in 120 DEG C of baking oven, then weigh 50 parts of medium temperature coals
Pitch and 50 parts of 70# Royal Dutch Shell pitches are mixed and added in stirred tank, heat and mechanical agitation is to 150 DEG C, constant temperature stirs
30min；5 parts of octyl phthalates and 5 parts of polyethylene glycol 400s are weighed, are slowly added into above-mentioned stirred tank, continues constant temperature and stirs
Mix 10min；Then high speed shear instrument, adjustment rotating speed to 4000rpm, and heating stirring kettle are used instead to 180 DEG C, adds 3 parts of poly- α alkene
Hydrocarbon PAO2.5,5 parts of powder styrene butadiene rubber SBR, using 5000rpm high speed shears, keep asphalt mixture temperature in stirred tank
Between 180~190 DEG C, constant temperature constant speed high speed shear 60min, room temperature is then naturally cooled to, that is, modified coal drip is prepared
It is blue or green.Prepared modified coal pitch softening point is 47.0 DEG C, and 172.9,5 DEG C of ductilities of needle penetration are 59.5cm.
Embodiment 2
Medium temperature coal pitch and 70# Royal Dutch Shells pitch are heated into 4h in 120 DEG C of baking oven, then weigh 70 parts of medium temperature coals
Pitch and 30 parts of 70# Royal Dutch Shell pitches are mixed and added in stirred tank, heat and mechanical agitation is to 150 DEG C, constant temperature stirs
30min；5 parts of octyl phthalates and 5 parts of Macrogol 600s are weighed, are slowly added into above-mentioned stirred tank, continues constant temperature and stirs
Mix 10min；Then high speed shear instrument, adjustment rotating speed to 4000rpm, and heating stirring kettle are used instead to 180 DEG C, adds 5 parts of powder
Styrene butadiene rubber sbr, using 5000rpm high speed shears, asphalt mixture temperature in stirred tank is set to be maintained between 180~190 DEG C,
Constant temperature constant speed high speed shear 60min, then naturally cools to room temperature, that is, modified coal pitch is prepared.Prepared modified coal
Asphalt softening point is 58.0 DEG C, and 94,5 DEG C of ductilities of needle penetration are 32.5cm.
Embodiment 3
Medium temperature coal pitch and 70# Royal Dutch Shells pitch are heated into 4h in 120 DEG C of baking oven, then weigh 60 parts of medium temperature coals
Pitch and 40 parts of 70# Royal Dutch Shell pitches are mixed and added in stirred tank, heat and mechanical agitation is to 150 DEG C, constant temperature stirs
30min；5 parts of butyl phthalates and 5 parts of polyethylene glycol-800s are weighed, are slowly added into above-mentioned stirred tank, continues constant temperature and stirs
Mix 10min；Then high speed shear instrument, adjustment rotating speed to 4000rpm, and heating stirring kettle are used instead to 180 DEG C, adds 5 parts of powder
Styrene butadiene rubber sbr, using 5000rpm high speed shears, asphalt mixture temperature in stirred tank is set to be maintained between 180~190 DEG C,
Constant temperature constant speed high speed shear 60min, then naturally cools to room temperature, that is, modified coal pitch is prepared.Prepared modified coal
Asphalt softening point is 56.5 DEG C, and 112,5 DEG C of ductilities of needle penetration are 41.5cm.
Embodiment 4
Medium temperature coal pitch and 70# Royal Dutch Shells pitch are heated into 4h in 120 DEG C of baking oven, then weigh 50 parts of medium temperature coals
Pitch and 50 parts of 70# Royal Dutch Shell pitches are mixed and added in stirred tank, heat and mechanical agitation is to 150 DEG C, constant temperature stirs
30min；5 parts of octyl phthalates and 5 parts of Macrogol 600s are weighed, are slowly added into above-mentioned stirred tank, continues constant temperature and stirs
Mix 10min；Then high speed shear instrument, adjustment rotating speed to 4000rpm, and heating stirring kettle are used instead to 180 DEG C, adds 1 part of poly- α alkene
Hydrocarbon PAO7 and 4 parts of powder styrene butadiene rubber SBR, using 5000rpm high speed shears, it is maintained at asphalt mixture temperature in stirred tank
Between 180~190 DEG C, constant temperature constant speed high speed shear 60min, room temperature is then naturally cooled to, that is, modified coal pitch is prepared.
Prepared modified coal pitch softening point is 51.0 DEG C, and 143.6,5 DEG C of ductilities of needle penetration are 54.7cm.
Embodiment 5
Extra large 361 asphalt in medium temperature coal pitch and 70# are heated into 4h in 120 DEG C of baking oven, then weighed in 50 parts
Extra large 361 asphalt are mixed and added in stirred tank in warm coal tar pitch and 50 parts of 70#, heat and mechanical agitation is to 150 DEG C, permanent
Temperature stirring 30min；Weigh 5 parts of octyl phthalates, the stem of noble dendrobium fat element (4,4 '-dihydroxy -3,3 ', 5,5 '-tetramethoxy -7,
9 '-epoxy wood fat alkane -7 ', 9- lactones) 2 parts and 5 parts of Macrogol 600s, it is slowly added into above-mentioned stirred tank, continues constant temperature and stir
Mix 10min；Then use instead and tell boxshear apparatus, adjustment rotating speed to 4000rpm, and heating stirring kettle adds 5 parts of powder to 180 DEG C
Styrene butadiene rubber sbr, using 5000rpm high speed shears, asphalt mixture temperature in stirred tank is set to be maintained between 180~190 DEG C,
Constant temperature constant speed high speed shear 60min, then naturally cools to room temperature, that is, modified coal pitch is prepared.Prepared modified coal
Asphalt softening point is 56.0 DEG C, and 146.1,5 DEG C of ductilities of needle penetration are 84.2cm.
Embodiment 6
Extra large 361 asphalt in medium temperature coal pitch and 70# are heated into 4h in 120 DEG C of baking oven, then weighed in 50 parts
Extra large 361 asphalt are mixed and added in stirred tank in warm coal tar pitch and 50 parts of 70#, heat and mechanical agitation is to 150 DEG C, permanent
Temperature stirring 30min；5 parts of octyl phthalates and 5 parts of Macrogol 600s are weighed, are slowly added into above-mentioned stirred tank, are continued
Constant temperature stirs 10min；Then use instead and tell boxshear apparatus, adjustment rotating speed to 4000rpm, and heating stirring kettle adds 5 to 180 DEG C
Part powder styrene butadiene rubber SBR, using 5000rpm high speed shears, makes asphalt mixture temperature in stirred tank be maintained at 180~190
Between DEG C, constant temperature constant speed high speed shear 60min, room temperature is then naturally cooled to, that is, modified coal pitch is prepared.Prepared
Modified coal pitch softening point is 52.5 DEG C, and 132,5 DEG C of ductilities of needle penetration are 41.5cm, and 5 DEG C of ductilities are 56.3cm.
Claims (2)
1. the modified coal pitch of stable performance under a kind of low temperature, it is characterised in that each raw material composition of modified coal pitch presses matter
Measuring part includes coal tar pitch 30-90 parts, asphalt 10-70 parts, phthalic acid ester 1-5 parts, polyethylene glycol 1-10 parts, poly- α alkene
Hydrocarbon 0-3 parts and for 0, powder styrene butadiene rubber 1-10 parts；
The asphalt is 70# asphalt and 90# asphalt；The molecular weight of the polyethylene glycol be 400,600,800,
1000th, the one or more in 1200,1500；The polyalphaolefin include PAO2, PAO2.5, PAO4, PAO5, PAO6, PAO7,
One or more in PAO8, PAO9, PAO10, PAO25.
2. the preparation method of modified coal pitch according to claim 1, it is characterised in that the preparation method specific steps
For：1) asphalt of coal tar pitch sum is heated into 1-4h in 100-120 DEG C, then weighs coal tar pitch and asphalt mixing simultaneously
It is added in stirred tank, heats and mechanical agitation is to 130-200 DEG C, constant temperature stirs 5-30min；2) weigh phthalic acid ester and
Polyethylene glycol, it is slowly added into above-mentioned stirred tank, then weighs polyalphaolefin and be added in stirred tank, continues constant temperature stirring 5-
30min；3) stirred tank is heated to 160-200 DEG C, adds powder styrene butadiene rubber, using 1000-6000rpm high speed shears, make
Asphalt mixture temperature is maintained between 170-200 DEG C in stirred tank, constant temperature constant speed high speed shear 30-120min, then natural
Room temperature is cooled to, that is, modified coal pitch is prepared.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510991941.0A CN105419362B (en) | 2015-12-25 | 2015-12-25 | Modified coal pitch of stable performance and preparation method thereof under a kind of low temperature |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510991941.0A CN105419362B (en) | 2015-12-25 | 2015-12-25 | Modified coal pitch of stable performance and preparation method thereof under a kind of low temperature |
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| CN105419362A CN105419362A (en) | 2016-03-23 |
| CN105419362B true CN105419362B (en) | 2018-01-02 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107057382A (en) * | 2016-12-31 | 2017-08-18 | 山西省交通科学研究院 | A kind of polymer and montmorillonite modified synergic coal tar pitch and preparation method thereof |
| CN107033614B (en) * | 2017-04-27 | 2019-06-28 | 湖北绿色家园材料技术股份有限公司 | A kind of Ergol leftover bits and pieces modified coal pitch and preparation method thereof |
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| CN1184263C (en) * | 2001-11-29 | 2005-01-12 | 中国石化集团齐鲁石油化工公司 | Composite modified asphalt and preparation method thereof |
| CN103044938B (en) * | 2013-01-21 | 2015-02-18 | 武汉科技大学 | Coal asphalt/SBS (Styrene Butadiene Styrene)/waste colloid powder composite modified asphalt and preparation method thereof |
| CN103694716B (en) * | 2013-12-10 | 2016-03-09 | 柳州博泽科技有限公司 | Coal asphalt product of modification and preparation method thereof |
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Inventor after: Mu Jianqing Inventor after: Zhu Xiaolin Inventor after: Hu Guopeng Inventor after: Wang Yonggang Inventor after: Cai Lina Inventor after: Xie Bangzhu Inventor after: Song Jiehua Inventor after: Liu Zhe Inventor after: Pang Jinyu Inventor after: Zhang Shuai Inventor after: Liu Pengfei Inventor after: He Xin Inventor before: Mu Jianqing Inventor before: Cai Lina Inventor before: Liu Zhe Inventor before: Hu Guopeng Inventor before: Pang Jinyu Inventor before: Zhang Shuai Inventor before: Liu Pengfei Inventor before: Song Jiehua Inventor before: Wang Yonggang |
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