CN105419362A - Modified coal asphalt being stable in performance at low temperature and preparation method thereof - Google Patents
Modified coal asphalt being stable in performance at low temperature and preparation method thereof Download PDFInfo
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- CN105419362A CN105419362A CN201510991941.0A CN201510991941A CN105419362A CN 105419362 A CN105419362 A CN 105419362A CN 201510991941 A CN201510991941 A CN 201510991941A CN 105419362 A CN105419362 A CN 105419362A
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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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Abstract
The invention relates to modified coal asphalt being stable in performance at a low temperature and a preparation method thereof. The modified coal asphalt includes the following raw materials, by mass: 30-90 parts of coal asphalt, 10-70 parts of petroleum asphalt, 1-5 parts of phthalate, 1-10 parts of polyethylene glycol, 0-3 parts of poly-[alpha]-olefin and 1-10 parts of butadiene styrene rubber powder. Compared with the prior art, the modified coal asphalt has following advantages: the added poly-[alpha]-olefin can improve the stability, uniformity and low-temperature performance of the modified coal asphalt, and reduces instable performance of the modified coal asphalt due to changes in temperature and SBR ingredients. Ductility property at 5 DEG C of the modified coal asphalt is greatly better than the relative performance of modified coal asphalt in the prior art. The performance of the modified coal asphalt achieves technical requirement of SBS modified petroleum asphalt. Compared with asphalt with petroleum as a substrate, the modified coal asphalt is lower in cost and better in low temperature performance. Devices required in the preparation process is simple and are universal with the devices of modified petroleum asphalt in the prior art, thereby reducing production cost.
Description
Technical field
The invention belongs to coal tar pitch modification technical field, specifically, relate to modified coal pitch of stable performance and preparation method thereof under a kind of low temperature.
Background technology
In recent years along with the price of petroleum pitch day by day rises, the increase day by day of constructing road cost, people start to pay close attention to other good bi tumenf orr oad equivalent material of low cost performance and do, and wherein coal-tar pitch receives the concern of people as early stage road-making material.But coal-tar pitch low temperature embrittlement, poor ductility and construction time environmental pollution serious, can not effectively be applied always.Domestic about the research of coal-tar pitch pavement performance at present, mainly concentrate on two aspects: one is the pavement performance index improving coal-tar pitch, especially prolongs toughness; Two is the pollutant components reducing and eliminate coal-tar pitch, mainly polycyclic aromatic hydrocarbons (PAH) class material.In the middle of the modification of current coal-tar pitch, main flow is still by coal-tar pitch and petroleum pitch mixing, and then given play to two kinds of pitches advantage separately, also there is the method for modifying of some coal-tar pitch to be use for reference petroleum asphalt modified method, promoting the performance of modified coal pitch by mixing some organism or nano material.
Compared to petroleum pitch, coal-tar pitch has that softening temperature is high, adhesive property good, with low cost, rutting resistance is strong, ageing-resistant performance is strong and the advantage such as wear resistance is good, but coal-tar pitch low-temperature embrittleness causes coal-tar pitch to be difficult in regional widespread uses such as the north.And coal-tar pitch is narrow as the byproduct range of application of coal tar industry, a large amount of coal-tar pitch is unsalable, causes the great wasting of resources.
At present, its low-temperature embrittleness of most modified coal pitch, ductility are poor, are difficult to the performance reaching oil matrix pitch, and difference is larger compared with modified oil pitch, and this restricts coal-tar pitch widespread use greatly.The method promoted about coal-tar pitch low-temperature performance at present mainly directly adds some properties-correcting agent in coal-tar pitch, its low temperature ductility can be promoted to some extent, but in current research report, the low-temperature performance of modified coal pitch seldom has the technical requirements that can reach modified oil pitch in " standard specification for construction and acceptance of highway asphalt pavement " (JTGF40-2004), is even difficult to the technical requirements meeting high-grade highway PetroChina Company Limited. pitch.Therefore work out a kind of low temperature ductility and can have important Social and economic benef@by good modified coal pitch.
Summary of the invention
For solving the problems of the technologies described above, the invention provides modified coal pitch of stable performance and preparation method thereof under a kind of low temperature with low cost.
The modified coal pitch of stable performance under a kind of low temperature of the present invention, each raw material composition of described modified coal pitch comprises coal-tar pitch 30-90 part, petroleum pitch 10-70 part, phthalic ester 1-5 part, polyoxyethylene glycol 1-10 part, polyalphaolefin 0-3 part, powder styrene butadiene rubber 1-10 part in mass ratio.
The modified coal pitch of stable performance under a kind of low temperature of the present invention, described petroleum pitch is 70# petroleum pitch and 90# petroleum pitch.
The modified coal pitch of stable performance under a kind of low temperature of the present invention, the molecular weight of described polyoxyethylene glycol is one or several in 400,600,800,1000,1200,1500.
The modified coal pitch of stable performance under a kind of low temperature of the present invention, described polyalphaolefin comprises one or more in PAO2, 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 described modified coal pitch also comprises stem of noble dendrobium fat element 2 parts by mass parts.
The preparation method of modified coal pitch of the present invention, described preparation method's concrete steps are: 1) by coal-tar pitch and petroleum pitch in 100 ~ 120 DEG C, heat 1-4h, then coal-tar pitch is taken and petroleum pitch mixes and joins in stirring tank, heating also machinery is stirred to 130-200 DEG C, and constant temperature stirs 5-30min; 2) take phthalic ester and polyoxyethylene glycol, slowly join in above-mentioned stirring tank, then take polyalphaolefin and join in stirring tank, continue constant temperature and stir 5-30min; 3) stirring tank is heated to 160-200 DEG C, add powder styrene butadiene rubber, adopt 1000-6000rpm high speed shear, stirring tank medium pitch mixture temperature is made to remain between 170-200 DEG C, constant temperature constant speed high speed shear 30 ~ 120min, then naturally cool to room temperature, namely prepare modified coal pitch.
Compared with prior art, under low temperature of the present invention, the modified coal pitch of stable performance has the following advantages: with the addition of polyalphaolefin and ester class, be conducive to the adding of polyalphaolefin the stability, uniformity and the low-temperature performance that improve modified coal pitch, reduce the unstable properties that modified coal pitch causes along with temperature and SBR composition transfer; Its 5 DEG C of ductility performances are considerably beyond the correlated performance of current modified coal pitch; Performance reaches " standard specification for construction and acceptance of highway asphalt pavement " (JTGF40-2004) about the technical requirements of SBS modified oil pitch; More cheap compared to oil matrix asphalt price, low-temperature performance is outstanding; Equipment used by preparation process is simple, does not need again purchase or relate to new installation, can be general with the equipment of current modified oil pitch, greatly reduces the cost in production process.
Embodiment
Below in conjunction with specific embodiment, modified coal pitch of stable performance under described low temperature with low cost and preparation method thereof 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 Shell pitch are heated 4h in the baking oven of 120 DEG C, then takes 50 parts of medium temperature coal pitch and 50 parts of 70# Royal Dutch Shell pitches mix and join in stirring tank, heating machinery is stirred to 150 DEG C, constant temperature stirs 30min; Take 5 parts of octyl phthalates and 5 parts of poly(oxyethylene glycol) 400, slowly join in above-mentioned stirring tank, continue constant temperature and stir 10min; Then high speed shear instrument is used instead, adjustment rotating speed is to 4000rpm, and heated and stirred still is to 180 DEG C, add 3 parts of polyalphaolefin PAO2.5,5 parts of powder styrene butadiene rubber SBR, adopt 5000rpm high speed shear, make stirring tank medium pitch mixture temperature remain between 180 ~ 190 DEG C, constant temperature constant speed high speed shear 60min, then naturally cool to room temperature, namely prepare modified coal pitch.Prepared modified coal pitch softening temperature is 47.0 DEG C, and penetration degree is 172.9,5 DEG C of ductilities is 59.5cm.
Embodiment 2
Medium temperature coal pitch and 70# Royal Dutch Shell pitch are heated 4h in the baking oven of 120 DEG C, then takes 70 parts of medium temperature coal pitch and 30 parts of 70# Royal Dutch Shell pitches mix and join in stirring tank, heating machinery is stirred to 150 DEG C, constant temperature stirs 30min; Take 5 parts of octyl phthalates and 5 parts of Polyethylene Glycol-600s, slowly join in above-mentioned stirring tank, continue constant temperature and stir 10min; Then high speed shear instrument is used instead, adjustment rotating speed is to 4000rpm, and heated and stirred still is to 180 DEG C, add 5 parts of powder styrene butadiene rubber SBR, adopt 5000rpm high speed shear, make stirring tank medium pitch mixture temperature remain between 180 ~ 190 DEG C, constant temperature constant speed high speed shear 60min, then naturally cool to room temperature, namely prepare modified coal pitch.Prepared modified coal pitch softening temperature is 58.0 DEG C, and penetration degree is 94,5 DEG C of ductilities is 32.5cm.
Embodiment 3
Medium temperature coal pitch and 70# Royal Dutch Shell pitch are heated 4h in the baking oven of 120 DEG C, then takes 60 parts of medium temperature coal pitch and 40 parts of 70# Royal Dutch Shell pitches mix and join in stirring tank, heating machinery is stirred to 150 DEG C, constant temperature stirs 30min; Take 5 parts of butyl phthalates and 5 parts of polyethylene glycol-800, slowly join in above-mentioned stirring tank, continue constant temperature and stir 10min; Then high speed shear instrument is used instead, adjustment rotating speed is to 4000rpm, and heated and stirred still is to 180 DEG C, add 5 parts of powder styrene butadiene rubber SBR, adopt 5000rpm high speed shear, make stirring tank medium pitch mixture temperature remain between 180 ~ 190 DEG C, constant temperature constant speed high speed shear 60min, then naturally cool to room temperature, namely prepare modified coal pitch.Prepared modified coal pitch softening temperature is 56.5 DEG C, and penetration degree is 112,5 DEG C of ductilities is 41.5cm.
Embodiment 4
Medium temperature coal pitch and 70# Royal Dutch Shell pitch are heated 4h in the baking oven of 120 DEG C, then takes 50 parts of medium temperature coal pitch and 50 parts of 70# Royal Dutch Shell pitches mix and join in stirring tank, heating machinery is stirred to 150 DEG C, constant temperature stirs 30min; Take 5 parts of octyl phthalates and 5 parts of Polyethylene Glycol-600s, slowly join in above-mentioned stirring tank, continue constant temperature and stir 10min; Then high speed shear instrument is used instead, adjustment rotating speed is to 4000rpm, and heated and stirred still is to 180 DEG C, add 1 part of polyalphaolefin PAO7 and 4 part powder styrene butadiene rubber SBR, adopt 5000rpm high speed shear, make stirring tank medium pitch mixture temperature remain between 180 ~ 190 DEG C, constant temperature constant speed high speed shear 60min, then naturally cool to room temperature, namely prepare modified coal pitch.Prepared modified coal pitch softening temperature is 51.0 DEG C, and penetration degree is 143.6,5 DEG C of ductilities is 54.7cm.
Embodiment 5
361 petroleum pitch extra large in medium temperature coal pitch and 70# are heated 4h in the baking oven of 120 DEG C, then takes extra large 361 petroleum pitch in 50 parts of medium temperature coal pitch and 50 parts of 70# and mix and join in stirring tank, heating also machinery is stirred to 150 DEG C, and constant temperature stirs 30min; Take 5 parts of octyl phthalates, stem of noble dendrobium fat element (4,4 '-dihydroxyl-3,3 ', 5,5 '-tetramethoxy-7,9 '-epoxy wood fat alkane-7 ', 9-lactone) 2 parts and 5 parts of Polyethylene Glycol-600s, slowly join in above-mentioned stirring tank, continue constant temperature and stir 10min; Then use instead and tell boxshear apparatus, adjustment rotating speed is to 4000rpm, and heated and stirred still is to 180 DEG C, add 5 parts of powder styrene butadiene rubber SBR, adopt 5000rpm high speed shear, make stirring tank medium pitch mixture temperature remain between 180 ~ 190 DEG C, constant temperature constant speed high speed shear 60min, then naturally cool to room temperature, namely prepare modified coal pitch.Prepared modified coal pitch softening temperature is 56.0 DEG C, and penetration degree is 146.1,5 DEG C of ductilities is 84.2cm.
Embodiment 6
361 petroleum pitch extra large in medium temperature coal pitch and 70# are heated 4h in the baking oven of 120 DEG C, then takes extra large 361 petroleum pitch in 50 parts of medium temperature coal pitch and 50 parts of 70# and mix and join in stirring tank, heating also machinery is stirred to 150 DEG C, and constant temperature stirs 30min; Take 5 parts of octyl phthalates and 5 parts of Polyethylene Glycol-600s, slowly join in above-mentioned stirring tank, continue constant temperature and stir 10min; Then use instead and tell boxshear apparatus, adjustment rotating speed is to 4000rpm, and heated and stirred still is to 180 DEG C, add 5 parts of powder styrene butadiene rubber SBR, adopt 5000rpm high speed shear, make stirring tank medium pitch mixture temperature remain between 180 ~ 190 DEG C, constant temperature constant speed high speed shear 60min, then naturally cool to room temperature, namely prepare modified coal pitch.Prepared modified coal pitch softening temperature is 52.5 DEG C, and penetration degree is 132,5 DEG C of ductilities is 41.5cm, and 5 DEG C of ductilities are 56.3cm.
Claims (5)
1. the modified coal pitch of stable performance under a low temperature, it is characterized in that, each raw material composition of described modified coal pitch comprises coal-tar pitch 30-90 part, petroleum pitch 10-70 part, phthalic ester 1-5 part, polyoxyethylene glycol 1-10 part, polyalphaolefin 0-3 part, powder styrene butadiene rubber 1-10 part by mass parts.
2. the modified coal pitch of stable performance under low temperature according to claim 1, is characterized in that, described petroleum pitch is 70# petroleum pitch and 90# petroleum pitch.
3. the modified coal pitch of stable performance under low temperature according to claim 1, is characterized in that, the molecular weight of described polyoxyethylene glycol is one or more in 400,600,800,1000,1200,1500.
4. the modified coal pitch of stable performance under low temperature according to claim 1, is characterized in that, described polyalphaolefin comprises one or more in PAO2, PAO2.5, PAO4, PAO5, PAO6, PAO7, PAO8, PAO9, PAO10, PAO25.
5. the preparation method of modified coal pitch according to claim 1, it is characterized in that, described preparation method's concrete steps are: 1) by coal-tar pitch and petroleum pitch in 100 ~ 120 DEG C, heat 1-4h, then coal-tar pitch is taken and petroleum pitch mixes and joins in stirring tank, heating also machinery is stirred to 130-200 DEG C, and constant temperature stirs 5-30min; 2) take phthalic ester and polyoxyethylene glycol, slowly join in above-mentioned stirring tank, then take polyalphaolefin and join in stirring tank, continue constant temperature and stir 5-30min; 3) stirring tank is heated to 160-200 DEG C, add powder styrene butadiene rubber, adopt 1000-6000rpm high speed shear, stirring tank medium pitch mixture temperature is made to remain between 170-200 DEG C, constant temperature constant speed high speed shear 30-120min, then naturally cool to room temperature, namely prepare modified coal pitch.
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| Application Number | Priority Date | Filing Date | Title |
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| 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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| 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 true CN105419362A (en) | 2016-03-23 |
| CN105419362B CN105419362B (en) | 2018-01-02 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107033614A (en) * | 2017-04-27 | 2017-08-11 | 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 |
| 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 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1422904A (en) * | 2001-11-29 | 2003-06-11 | 中国石化集团齐鲁石油化工公司 | Composite modified asphalt and preparation method thereof |
| CN103044938A (en) * | 2013-01-21 | 2013-04-17 | 武汉科技大学 | Coal asphalt/SBS (Styrene Butadiene Styrene)/waste colloid powder composite modified asphalt and preparation method thereof |
| CN103694716A (en) * | 2013-12-10 | 2014-04-02 | 柳州博泽科技有限公司 | Modified coal asphalt product and preparation method thereof |
-
2015
- 2015-12-25 CN CN201510991941.0A patent/CN105419362B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1422904A (en) * | 2001-11-29 | 2003-06-11 | 中国石化集团齐鲁石油化工公司 | Composite modified asphalt and preparation method thereof |
| CN103044938A (en) * | 2013-01-21 | 2013-04-17 | 武汉科技大学 | Coal asphalt/SBS (Styrene Butadiene Styrene)/waste colloid powder composite modified asphalt and preparation method thereof |
| CN103694716A (en) * | 2013-12-10 | 2014-04-02 | 柳州博泽科技有限公司 | Modified coal asphalt product and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107033614A (en) * | 2017-04-27 | 2017-08-11 | 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 |
| 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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| CN105419362B (en) | 2018-01-02 |
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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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