CN115703930A - Production method of modified asphalt - Google Patents
Production method of modified asphalt Download PDFInfo
- Publication number
- CN115703930A CN115703930A CN202110897157.9A CN202110897157A CN115703930A CN 115703930 A CN115703930 A CN 115703930A CN 202110897157 A CN202110897157 A CN 202110897157A CN 115703930 A CN115703930 A CN 115703930A
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- CN
- China
- Prior art keywords
- asphalt
- modifier
- filler
- shearing
- modified asphalt
- 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.)
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- 239000010426 asphalt Substances 0.000 title claims abstract description 87
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 239000003607 modifier Substances 0.000 claims abstract description 41
- 239000000945 filler Substances 0.000 claims abstract description 37
- 238000010008 shearing Methods 0.000 claims abstract description 31
- 238000003756 stirring Methods 0.000 claims abstract description 21
- 239000011159 matrix material Substances 0.000 claims abstract description 19
- 238000001035 drying Methods 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- 239000011259 mixed solution Substances 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims abstract description 5
- 230000008961 swelling Effects 0.000 claims abstract description 4
- 238000005303 weighing Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 5
- 230000003712 anti-aging effect Effects 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 4
- 239000011707 mineral Substances 0.000 claims description 4
- 239000004014 plasticizer Substances 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 239000003381 stabilizer Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 240000000491 Corchorus aestuans Species 0.000 description 1
- 235000011777 Corchorus aestuans Nutrition 0.000 description 1
- 235000010862 Corchorus capsularis Nutrition 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention discloses a method for producing modified asphalt, which comprises the following steps: 1. heating the matrix asphalt to 150-160 ℃, putting the modifier and the filler into a drying oven at 50 ℃ for drying, and weighing the modifier and the filler according to a certain proportion; 2. keeping the temperature of the matrix asphalt at 140-150 ℃, then gradually and sequentially adding the weighed modifier and filler, and slowly stirring for 20min by a stirrer to fully mix the modifier and the matrix asphalt to obtain a mixed solution of the modifier and the matrix asphalt; 3. opening a shearing machine, shearing the mixed solution obtained in the step 2, wherein the shearing time is 40-60 min, the shearing rate is 4000r/min, and the shearing temperature is 170-180 ℃; 4. swelling the sheared asphalt in an environment of 160 ℃ for 1h; heating the asphalt to 170 ℃, adjusting the speed of a shearing machine to 5000r/min, and shearing for 20min; and (3) slowly stirring the sheared modified asphalt at the temperature of 140-160 ℃ by using a stirring rod, and removing all air bubbles in the asphalt to obtain the modified asphalt.
Description
Technical Field
The invention relates to the technical field of asphalt processing, in particular to a production method of modified asphalt.
Background
The modified asphalt is an asphalt binder prepared by adding external additives (modifiers) such as rubber, resin, high molecular polymer, ground rubber powder or other fillers or by adopting measures such as mild oxidation processing of asphalt and the like, so that the performance of the asphalt or the asphalt mixture is improved. Modified asphalt generally refers to asphalt in which additives such as high molecular polymers and resins are added to a base asphalt by a certain method and the properties are improved after a special process treatment. The modified asphalt waterproof coiled material is manufactured by processing modified petroleum asphalt as a stagnation-inducing covering layer, a polyester fiber non-woven fabric layer, jute cloth, glass fiber felt and other materials as a base and a plastic film as an anti-sticking isolating layer through a certain processing procedure, and has good waterproofness, high elasticity and fatigue resistance. In the prior art for preparing modified asphalt, only a modifier is usually used for increasing the strength of a waterproof coiled material, the raw material is single, the strength and the toughness are poor, and the service life is short.
Disclosure of Invention
The invention provides a production method of modified asphalt, which solves the problems that in the existing modified asphalt preparation technology, only a modifier is usually used to increase the strength of a waterproof coiled material, the raw material is single, the strength and the toughness are poor, and the service life is short.
In order to solve the technical problems, the invention adopts the following technical scheme: a production method of modified asphalt is characterized in that: the method comprises the following steps:
step 1, heating matrix asphalt to 150-160 ℃, putting a modifier and a filler into a drying oven at 50 ℃ for drying, and weighing the modifier and the filler according to a certain proportion;
step 2, keeping the temperature of the matrix asphalt at 140-150 ℃, then gradually and sequentially adding the weighed modifier and filler, and slowly stirring for 20min by a stirrer to fully mix the modifier, the filler and the matrix asphalt to obtain a mixed solution of the modifier, the filler and the matrix asphalt;
step 3, opening a shearing machine, shearing the mixed liquid obtained in the step 2, wherein the shearing time is 40-60 min, the shearing rate is 4000r/min, and the shearing temperature is 170-180 ℃;
step 4, swelling the sheared asphalt in an environment of 160 ℃ for 1h;
step 5, heating the asphalt to 170 ℃, adjusting the speed of a shearing machine to 5000r/min, and shearing for 20min;
and 6, slowly stirring the sheared modified asphalt at the temperature of 140-160 ℃ by using a stirring rod device, and removing all air bubbles in the asphalt to obtain the modified asphalt.
The further technical scheme is that the mixing amount of the modifier is 5% and the mixing amount of the filler is 2% in the step 1.
The further technical scheme is that the modifier in the step 1 and the step 2 is the sbs, and the filler is a plasticizer, a stabilizer, an anti-aging agent and basalt mineral powder.
The further technical proposal is that the stirring speed of the stirrer in the step 2 is 300r/min-400r/min.
The further technical proposal is that the stirring speed of the stirrer in the step 6 is 35r/min-60r/min.
Compared with the prior art, the invention has the beneficial effects that:
1. by adding the modifier and the filler into the matrix asphalt, the modified asphalt has various capabilities of resisting external environment interference, the strength and the toughness of the modified asphalt are improved, and the service life of the modified asphalt is prolonged.
2. The base asphalt is heated to 150-160 ℃ to ensure that the asphalt does not deteriorate and has certain fluidity.
3. The filler and the modifier are prevented from agglomerating by placing the filler and the modifier into an oven for drying.
4. Through the shearing in the steps 3 and 5 for a plurality of times with less time, the asphalt, the modifier and the filler are fully mixed, meanwhile, the asphalt is prevented from aging, and the energy is saved.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
A production method of modified asphalt is characterized by comprising the following steps: the method comprises the following steps:
step 1, heating matrix asphalt to 150-160 ℃, putting a modifier and a filler into a drying oven at 50 ℃ for drying, and weighing the modifier and the filler according to a certain proportion;
step 2, keeping the temperature of the matrix asphalt at 140-150 ℃, then gradually and sequentially adding the weighed modifier and filler, and slowly stirring for 20min by a stirrer to fully mix the modifier, the filler and the matrix asphalt to obtain a mixed solution of the modifier, the filler and the matrix asphalt;
step 3, opening a shearing machine, shearing the mixed liquid obtained in the step 2, wherein the shearing time is 40-60 min, the shearing rate is 4000r/min, and the shearing temperature is 170-180 ℃;
step 4, swelling the sheared asphalt in an environment of 160 ℃ for 1h;
step 5, heating the asphalt to 170 ℃, adjusting the speed of a shearing machine to 5000r/min, and shearing for 20min;
and 6, slowly stirring the sheared modified asphalt at the temperature of 140-160 ℃ by using a stirring rod device, and removing all air bubbles in the asphalt to obtain the modified asphalt.
The property of the asphalt has great change along with the change of temperature, the asphalt is in a glassy elastic state at low temperature and in a viscoelastic state similar to rubber at high temperature, and in the step 1, the base asphalt is heated to 150-160 ℃, so that the asphalt has certain fluidity while the asphalt is ensured not to be degraded; the filler and the modifier are put into an oven for drying, so that the filler and the modifier are prevented from being coagulated into a cluster; in the step 2, the temperature of the matrix asphalt is kept within a proper temperature range, and then the modifier and the filler are added in sequence in a certain proportion, so that the modifier, the filler and the matrix asphalt are fully mixed; in step 3, under the action of a shearing machine and high temperature, the modifier and the filler added into the asphalt are crushed and ground; in the step 5, the modifier and the filler can absorb light components in the asphalt to swell and develop under the action of high temperature, and the light components are uniformly dispersed in the asphalt, so that the modification effect is improved; in step 6, since the high-speed and high-speed shearing action causes a lot of air to be mixed into the modified asphalt, which affects the quality of the modified asphalt, it is necessary to gently stir the modified asphalt with a glass rod after the modified asphalt is prepared, so as to discharge the mixed air.
In the step 1, the mixing amount of the modifier is 5% and the mixing amount of the filler is 2%.
The modifier in the step 1 and the step 2 is sbs, and the filler is a plasticizer, a stabilizer, an anti-aging agent and basalt mineral powder. The strength and toughness of the modified asphalt are enhanced and the service life is prolonged by the design that the modifier is the sbs and the filler is the plasticizer, the stabilizer, the anti-aging agent and the basalt mineral powder.
The stirring speed of the stirrer in the step 2 is 300r/min-400r/min. By passing
The design of the stirring speed of 300r/min-400r/min is convenient for fully mixing the asphalt, the modifier and the filler.
The stirring speed of the stirrer in the step 6 is 35r/min-60r/min. Through the stirring speed of 35r/min-60r/min, the air mixed in the modified asphalt can be discharged, and the quality of the modified asphalt is improved.
Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure. More specifically, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.
Claims (5)
1. A production method of modified asphalt is characterized in that: the method comprises the following steps:
step 1, heating matrix asphalt to 150-160 ℃, putting a modifier and a filler into a drying oven at 50 ℃ for drying, and weighing the modifier and the filler according to a certain proportion;
step 2, keeping the temperature of the matrix asphalt at 140-150 ℃, then gradually and sequentially adding the weighed modifier and filler, and slowly stirring for 20min by a stirrer to fully mix the modifier, the filler and the matrix asphalt to obtain a mixed solution of the modifier, the filler and the matrix asphalt;
step 3, opening a shearing machine, shearing the mixed liquid obtained in the step 2, wherein the shearing time is 40-60 min, the shearing rate is 4000r/min, and the shearing temperature is 170-180 ℃;
step 4, swelling the sheared asphalt in an environment of 160 ℃ for 1h;
step 5, heating the asphalt to 170 ℃, adjusting the speed of a shearing machine to 5000r/min, and shearing for 20min;
and 6, slowly stirring the sheared modified asphalt at the temperature of 140-160 ℃ by using a stirring rod, and removing all air bubbles in the asphalt to obtain the modified asphalt.
2. The process for producing a modified asphalt according to claim 1, wherein: in the step 1, the mixing amount of the modifier is 5% and the mixing amount of the filler is 2%.
3. The method for producing modified asphalt according to claim 1, wherein: the modifier in the step 1 and the step 2 is sbs, and the filler is a plasticizer, a stabilizer, an anti-aging agent and basalt mineral powder.
4. The process for producing a modified asphalt according to claim 1, wherein: the stirring speed of the stirrer in the step 2 is 300r/min-400r/min.
5. The process for producing a modified asphalt according to claim 1, wherein: and the stirring speed of the stirrer in the step 6 is 35r/min-60r/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110897157.9A CN115703930A (en) | 2021-08-05 | 2021-08-05 | Production method of modified asphalt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110897157.9A CN115703930A (en) | 2021-08-05 | 2021-08-05 | Production method of modified asphalt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115703930A true CN115703930A (en) | 2023-02-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110897157.9A Pending CN115703930A (en) | 2021-08-05 | 2021-08-05 | Production method of modified asphalt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115703930A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103160241A (en) * | 2012-12-13 | 2013-06-19 | 唐山德生防水股份有限公司 | Self-adhesion waterproof rolls used for road bridge and preparation method thereof |
| CN104672930A (en) * | 2015-03-10 | 2015-06-03 | 中化弘润石油化工有限公司 | Continuous production technology for SBS (styrene-butadiene-styrene) modified asphalt |
| CN105331127A (en) * | 2015-11-26 | 2016-02-17 | 佛山高富中石油燃料沥青有限责任公司 | Improved SBS (Styrene Butadiene Styrene) modified asphalt and manufacturing method thereof |
| CN106519980A (en) * | 2016-11-14 | 2017-03-22 | 广西泓达生物能源科技有限公司 | Production method of non-curable asphalt waterproof coating |
| CN110903664A (en) * | 2019-12-12 | 2020-03-24 | 长安大学 | Warm-mixed composite modified asphalt and preparation method thereof |
| CN113146877A (en) * | 2021-04-28 | 2021-07-23 | 潍坊市宇虹防水材料(集团)有限公司 | Manufacturing process of modified asphalt waterproof coiled material for planted roof |
-
2021
- 2021-08-05 CN CN202110897157.9A patent/CN115703930A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103160241A (en) * | 2012-12-13 | 2013-06-19 | 唐山德生防水股份有限公司 | Self-adhesion waterproof rolls used for road bridge and preparation method thereof |
| CN104672930A (en) * | 2015-03-10 | 2015-06-03 | 中化弘润石油化工有限公司 | Continuous production technology for SBS (styrene-butadiene-styrene) modified asphalt |
| CN105331127A (en) * | 2015-11-26 | 2016-02-17 | 佛山高富中石油燃料沥青有限责任公司 | Improved SBS (Styrene Butadiene Styrene) modified asphalt and manufacturing method thereof |
| CN106519980A (en) * | 2016-11-14 | 2017-03-22 | 广西泓达生物能源科技有限公司 | Production method of non-curable asphalt waterproof coating |
| CN110903664A (en) * | 2019-12-12 | 2020-03-24 | 长安大学 | Warm-mixed composite modified asphalt and preparation method thereof |
| CN113146877A (en) * | 2021-04-28 | 2021-07-23 | 潍坊市宇虹防水材料(集团)有限公司 | Manufacturing process of modified asphalt waterproof coiled material for planted roof |
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Application publication date: 20230217 |