CN102643555B - Process for producing styrene-butadiene-styrene block copolymer (SBS) modified asphalt - Google Patents
Process for producing styrene-butadiene-styrene block copolymer (SBS) modified asphalt Download PDFInfo
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Abstract
The invention discloses a process for producing styrene-butadiene-styrene block copolymer (SBS) modified asphalt, which includes the following steps of a swelling, a shearing, a primary development, a secondary development and an obtainment of a finished product of the SBS modified asphalt, wherein the swelling includes that base asphalt is heated to be in a molten state, the shearing includes that the base asphalt after being subjected to the swelling is mixed with a SBS modifier to be subjected to shearing and grinding to form a mixture, the primary development comprises that a portion of the base asphalt subjected to the swelling and a stabilizing agent are added into the mixture after shearing to develop and a semi-finished product of the SBS modified asphalt is obtained after the primary development is completed, the secondary development comprises that the base asphalt subjected to the swelling is further added into the semi-finished product of the SBS modified asphalt obtained in the primary development to develop, and the finished product of the SBS modified asphalt is obtained after the secondary development is completed. By means of the process for producing the styrene-butadiene-styrene block copolymer (SBS) modified asphalt, the asphalt is subjected to developing for two times, and a full development is achieved by adding a portion of the base asphalt subjected to swelling in each time of developing, thereby the content of the SBS modifier in the finished product is equal to or larger than 3.6% and simultaneously the technical index of the finished product can meet the requirements of highway engineering asphalt of industry standard of People' Republic of China.
Description
Technical field
The present invention relates to the production technique of modifying asphalt, be specifically related to a kind of SBS modifying asphalt production technique.
Background technology
Existing SBS modifying asphalt production technique may further comprise the steps:
1) swelling: with the matrix pitch heating, make matrix pitch be molten state;
2) shear: the matrix pitch after the swelling is mixed with properties-correcting agent SBS to shear grind, form compound;
3) grow: matrix pitch and stablizer in the compound after shearing after the adding swelling are grown;
4) be the SBS modifying asphalt after growth is finished.
The production technique of existing modifying asphalt is for once growing technology, and in existing processes, the Heating temperature of swelling is 180～185 °.Developmental temperature control is at 170～190 ℃, in the growth of carrying out about 4 hours under the effect of agitator.
The content of properties-correcting agent SBS need be more than 4.2% of total amount in the modifying asphalt that such production technique is made, its every technical indicator just can reach the requirement of People's Republic of China's industry standard highway engineering pitch, in order to make technical indicator more excellent, need to improve the content of modifying asphalt, and in the middle of the material of SBS modifying asphalt, properties-correcting agent SBS's is expensive, and the cost of SBS modifying asphalt is improved.
Summary of the invention
Technical problem to be solved by this invention provides a kind of finished product technical indicator height, SBS modifying asphalt production technique with low cost.
For solving the problems of the technologies described above, the SBS modifying asphalt production technique of the present invention's design mainly may further comprise the steps:
1) swelling: with the matrix pitch heating, make matrix pitch be molten state;
2) shear: the matrix pitch after the 100 weight part swellings is mixed with 7.79～9.7 weight part properties-correcting agent SBS to shear grind, form compound;
3) once grow: the matrix pitch and the stablizer that add in the compound after shearing after 54.12～55.1 weight part swellings are grown, and grow once that to finish the back be work in-process SBS modifying asphalt;
4) secondary is grown: the matrix pitch after adding 54.12～55.1 weight part swellings again in the work in-process SBS modifying asphalt after once growing is grown, and development time is 0.5～1.5h;
5) be finished product SBS modifying asphalt after secondary is grown and finished.
Compared with prior art, be that secondary is grown technology because the present invention adopts, this secondary is grown the matrix pitch after technology can be in grow jar adds swelling for twice, uses same amount properties-correcting agent SBS, can produce more finished product SBS modifying asphalt.With explained hereafter SBS modifying asphalt of the present invention, its employed properties-correcting agent SBS contained ratio in final finished product SBS modifying asphalt is little, and therefore, the present invention reduces the incorporation of properties-correcting agent SBS, makes the cost of modifying asphalt obtain great reduction.
In such scheme, Heating temperature during swelling can be same as the prior art, it is 180～185 °, but because swelling and the compatible substantial connection that exists, the swelling size has directly influenced the quality of consistency, in the technical program, better for the compatibility performance that makes matrix pitch, the Heating temperature during swelling is preferably 185～195 °;
Shearing in addition can be for repeatedly, and like this properties-correcting agent SBS is mixed with pitch more even, and abrasive grains is littler; And abrasive grains is more little, and the degree of scatter of properties-correcting agent SBS in pitch is more high, and the performance of modifying asphalt is just more good.When the matrix pitch after the swelling and properties-correcting agent SBS were sheared, enough thin in order to make properties-correcting agent SBS, to improve the quality of finished product, simultaneously in order to take into account production efficiency, the compound in this programme was sheared in colloidal mill 1～3 time.
In order to make the requirement that reaches People's Republic of China's industry standard highway engineering pitch that finished product SBS modified asphalt technology index can be more excellent, take into account production cost simultaneously, in step 2) in, described properties-correcting agent SBS can be 8.27～9.21 weight parts.
For the technical indicator that makes finished product SBS modifying asphalt more excellent, technique scheme, in step 3) was once grown, the matrix pitch that adds after the swelling can be 54.37～54.86 weight parts; In the step 4) secondary was grown, the matrix pitch after the adding swelling can be 54.37～54.86 weight parts.
Such scheme is described, and in step 3) was once grown, development time can be 3.5～4.5h.
Such scheme is described, and in the step 4) secondary was grown, development time can be 1.0h.
The described properties-correcting agent SBS of such scheme can be type SBS.
Matrix pitch before the described swelling of such scheme can be No. 70 matrix pitches.
Compared with prior art, it is 2 times that production technique medium pitch of the present invention is grown, each matrix pitch that respectively adds after the part swelling reaches full growth, make that the content of properties-correcting agent SBS is being equal to or greater than at 3.6% o'clock in the finished product, the technical indicator of its finished product all reaches the requirement of People's Republic of China's industry standard highway engineering pitch; And existing once the growth in the technology will make its finished product technical indicator all reach the requirement of People's Republic of China's industry standard highway engineering pitch, and the content of properties-correcting agent SBS will be equal to or greater than 4.2%; In the modifying asphalt, properties-correcting agent SBS's is expensive, make the cost height of SBS modifying asphalt, even being lower than existingly when once growing the properties-correcting agent SBS incorporation that technology makes at the properties-correcting agent SBS of production technique of the present invention incorporation, its technical indicator of the finished product that the present invention makes also is better than existing technical indicator of once growing the finished product that technology makes.
Embodiment
The invention will be further described with embodiment below, but the present invention is not limited to these embodiment.
Below umber described in each embodiment be weight part.
Embodiment 1
At first No. 70 matrix pitches are heated to 185 °, make No. 70 matrix pitches be molten state; Secondly No. 70 matrix pitches after the 100 weight part swellings are mixed with 7.79 weight part type SBSs and shear the formation compound; No. 70 matrix pitches and the 0.45 weight part stablizer that add in the compound after shearing again after the 54.12 weight part swellings are once grown, and development time is 3.5h, grow once that to finish the back be work in-process SBS modifying asphalt; No. 70 matrix pitches after adding 54.12 weight part swellings again in the work in-process SBS modifying asphalt after once growing at last carry out secondary and grow, development time is 0.5h, be finished product SBS modifying asphalt after secondary is grown and finished, it is 3.6% that finished product SBS modifying asphalt contains type SBS.Its key technical indexes such as table 1, wherein control group is the key technical indexes of once growing the SBS modifying asphalt of making for existing production technique, it is 3.8% that its finished product SBS modifying asphalt contains type SBS.
Table 1
Embodiment 2
At first No. 70 matrix pitches are heated to 188 °, make No. 70 matrix pitches be molten state; Secondly No. 70 matrix pitches after the swelling of 100 weight parts are mixed with 8.27 weight part type SBSs and shear the formation compound; No. 70 matrix pitches and the 0.46 weight part stablizer that add in the compound after shearing again after the 54.37 weight part swellings are once grown, and development time is 4h, grow once that to finish the back be work in-process SBS modifying asphalt; No. 70 matrix pitches after adding 54.37 weight part swellings again in the work in-process SBS modifying asphalt after once growing at last carry out secondary grows, and development time is 1h; Be finished product SBS modifying asphalt after secondary is grown and finished, it is 3.8% that finished product SBS modifying asphalt contains type SBS.Its key technical indexes such as table 2, wherein control group is once grown the key technical indexes of making the SBS modifying asphalt for existing production technique, and it is 4.4% that its finished product SBS modifying asphalt contains type SBS.
Table 2
Embodiment 3
At first No. 70 matrix pitches are heated to 190 °, make No. 70 matrix pitches be molten state; Secondly No. 70 matrix pitches after the swelling of 100 weight parts are mixed with 8.86 weight part type SBSs and shear the formation compound; No. 70 matrix pitches and the 0.49 weight part stablizer that add in the compound after shearing again after the 54.67 weight part swellings are once grown, and development time is 4.2h, grow once that to finish the back be work in-process SBS modifying asphalt; No. 70 matrix pitches after adding 54.67 weight part swellings again in the work in-process SBS modifying asphalt after once growing at last carry out secondary grows, and development time is 1.2h; Be finished product SBS modifying asphalt after secondary is grown and finished, it is 4.0% that finished product SBS modifying asphalt contains type SBS.Its key technical indexes such as table 3, wherein control group is once grown the key technical indexes of making the SBS modifying asphalt for existing production technique, and it is 4.0% that its finished product SBS modifying asphalt contains type SBS.
Table 3
Embodiment 4
At first No. 70 matrix pitches are heated to 195 °, make No. 70 matrix pitches be molten state; Secondly No. 70 matrix pitches after the swelling of 100 weight parts are mixed with 9.21 weight part type SBSs and shear the formation compound; No. 70 matrix pitches and the 0.49 weight part stablizer that add in the compound after shearing again after the 54.86 weight part swellings are once grown, and development time is 4.5h, grow once that to finish the back be work in-process SBS modifying asphalt; No. 70 matrix pitches after adding 54.86 weight part swellings again in the work in-process SBS modifying asphalt after once growing at last carry out secondary grows, and development time is 1.5h; Be finished product SBS modifying asphalt after secondary is grown and finished, it is 4.2% that finished product SBS modifying asphalt contains type SBS.Its key technical indexes such as table 4, wherein control group is once grown the key technical indexes of making the SBS modifying asphalt for existing production technique, and it is 4.2% that its finished product SBS modifying asphalt contains type SBS.
Table 4
Embodiment 5
At first No. 70 matrix pitches are heated to 195 °, make No. 70 matrix pitches be molten state; Secondly No. 70 matrix pitches after the swelling of 100 weight parts are mixed with 9.7 weight part type SBSs and shear the formation compound; No. 70 matrix pitches and the 0.51 weight part stablizer that add in the compound after shearing again after the 55.1 weight part swellings are once grown, and development time is 4.5h, grow once that to finish the back be work in-process SBS modifying asphalt; No. 70 matrix pitches after adding 55.1 weight part swellings again in the work in-process SBS modifying asphalt after once growing at last carry out secondary grows, and development time is 1.5h; Be finished product SBS modifying asphalt after secondary is grown and finished, it is 4.4% that finished product SBS modifying asphalt contains type SBS.Its key technical indexes such as table 4, wherein control group is once grown the key technical indexes of making the SBS modifying asphalt for existing production technique, and it is 4.4% that its finished product SBS modifying asphalt contains type SBS.
Table 5
Claims (8)
1.SBS the modifying asphalt production technique is characterized in that may further comprise the steps:
1) swelling: with the matrix pitch heating, make matrix pitch be molten state;
2) shear: the matrix pitch after the 100 weight part swellings is mixed with 7.79～9.7 weight part properties-correcting agent SBS to shear grind, form compound;
3) once grow: the matrix pitch and the stablizer that add in the compound after shearing after 54.12～55.1 weight part swellings are grown, and grow once that to finish the back be work in-process SBS modifying asphalt;
4) secondary is grown: the matrix pitch after adding 54.12～55.1 weight part swellings again in the work in-process SBS modifying asphalt after once growing is grown, and development time is 0.5～1.5h;
5) be finished product SBS modifying asphalt after secondary is grown and finished.
2. SBS modifying asphalt production technique according to claim 1 is characterized in that:
In step 2) in, described properties-correcting agent SBS is 8.27～9.21 weight parts.
3. SBS modifying asphalt production technique according to claim 2 is characterized in that: in step 3) was once grown, the matrix pitch that adds after the swelling was 54.37～54.86 weight parts; In the step 4) secondary was grown, the matrix pitch after the adding swelling was 54.37～54.86 weight parts.
4. SBS modifying asphalt production technique according to claim 1, it is characterized in that: in step 3) was once grown, development time was 3.5～4.5h.
5. SBS modifying asphalt production technique according to claim 1 is characterized in that: in the step 4) secondary was grown, development time was 1.0h.
6. SBS modifying asphalt production technique according to claim 1, it is characterized in that: the Heating temperature in the step 1) swelling is 185～195 ° of C.
7. SBS modifying asphalt production technique according to claim 1, it is characterized in that: described properties-correcting agent SBS is type SBS.
8. SBS modifying asphalt production technique according to claim 1 is characterized in that: the matrix pitch before the described swelling is No. 70 matrix pitches.
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| CN 201210131205 CN102643555B (en) | 2012-04-28 | 2012-04-28 | Process for producing styrene-butadiene-styrene block copolymer (SBS) modified asphalt |
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| CN103396670B (en) * | 2013-07-11 | 2016-03-23 | 河海大学 | A kind of water-repellent modified pitch for dam asphalt well and preparation method thereof |
| CN103408956B (en) * | 2013-08-16 | 2016-05-11 | 周乃承 | A kind of high performance modified bitumen and preparation method thereof |
| CN111826185B (en) * | 2020-07-28 | 2021-08-17 | 河南润金科技有限公司 | Production device and production method of SBS modified asphalt |
| CN115975091A (en) * | 2023-02-03 | 2023-04-18 | 山东省路桥集团有限公司 | Pour point depressant, preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0458386A1 (en) * | 1990-05-18 | 1991-11-27 | EURON S.p.A. | Method for preparing stable bitumen-polymer mixtures |
| CN1353143A (en) * | 2001-11-16 | 2002-06-12 | 湖北通发科技开发有限公司 | Process for preparing polymer modified asphalt |
| CN101130635A (en) * | 2007-08-06 | 2008-02-27 | 江苏宝利沥青股份有限公司 | Method for producing compound modified bitumen |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0458386A1 (en) * | 1990-05-18 | 1991-11-27 | EURON S.p.A. | Method for preparing stable bitumen-polymer mixtures |
| CN1353143A (en) * | 2001-11-16 | 2002-06-12 | 湖北通发科技开发有限公司 | Process for preparing polymer modified asphalt |
| CN101130635A (en) * | 2007-08-06 | 2008-02-27 | 江苏宝利沥青股份有限公司 | Method for producing compound modified bitumen |
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Inventor after: Peng Bin Inventor after: Zhang Shuling Inventor after: Lv Huasheng Inventor after: Zhang Bo Inventor after: Huang Yi Inventor after: Gao Leiyan Inventor before: Zhang Shuling Inventor before: Jiang Hui Inventor before: Zhang Ming Inventor before: Zhong Chunnan |
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Owner name: HUBEI GUOCHUANG HI-TECH MATERIAL CO., LTD. Free format text: FORMER OWNER: GUANGXI GUOCHUANG ROAD MATERIALS CO., LTD. Effective date: 20140521 |
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Effective date of registration: 20140521 Address after: Three road 430073 Hubei city of Wuhan province Wuhan East Lake new technology development zone of Wuhan University Science and Technology Park Wu Da Yuan No. 8 Patentee after: Hubei Guochuang Hi-tech Material Co., Ltd. Address before: 535008, the Guangxi Zhuang Autonomous Region, Qinzhou, Qinzhou port ditch operating area Patentee before: Guangxi Guochuang Road Materials Co., Ltd. |