CN103642256B - Polyoxyethylene glycol and modifying plastics pitch and preparation method thereof - Google Patents
Polyoxyethylene glycol and modifying plastics pitch and preparation method thereof Download PDFInfo
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Abstract
Polyoxyethylene glycol disclosed by the invention and modifying plastics pitch, be made up of following material by mass percentage: the sulphur that the waste or used plastics that the gac that the polyoxyethylene glycol that mass fraction is 4.2% ~ 7%, mass fraction are 0.9% ~ 1.5%, mass fraction are 0.9% ~ 1.5%, mass fraction are 0.3% ~ 0.5%, mass fraction are the pitch of 89.5% ~ 93.7%, the quality summation of above each material is 100%.The invention also discloses the preparation method of this modifying asphalt, comprise preparation material respectively, prepare properties-correcting agent, pulverize properties-correcting agent, prepare modifying asphalt four step.It is high that polyoxyethylene glycol of the present invention and modifying plastics pitch have softening temperature, the feature that ductility is high, penetration degree is low, viscosity is high, the requirement that motorway uses pitch can be met, and the plastics in the present invention use waste or used plastics, plastics bag in people's daily life, the recycling for waste especially waste plastic provides a very useful approach.
Description
Technical field
The invention belongs to technical field of material, be specifically related to a kind of polyoxyethylene glycol and modifying plastics pitch, the invention still further relates to the preparation method of above-mentioned modifying asphalt.
Background technology
The requirement to bituminous pavement of modern road traffic, particularly motorway is more and more higher, and the feature of Modern Traffic is that the volume of traffic is large, weight-carrying capacity is large, road speed is large, thus require that road surface supporting capacity is large, good endurance there is good surface appearance.The oil of China belongs to paraffinic base mostly, and the pitch general property processed with its refinement is poor, label is lower; China is again the output big country of a coal-tar pitch, but in coal-tar pitch, foreign matter content is very high, and the performances such as the ductility of coal-tar pitch, fragility, softening temperature are significantly declined.So only have asphalt modification, just can improve the utilization ratio of road asphalt, save foreign exchange.
In addition, present people more and more use plastics, and waste or used plastics is exactly one of white garbage being difficult to degrade, and how the process of waste or used plastics to be combined with the modification of pitch, become the current problem needing to solve.
Summary of the invention
The object of the present invention is to provide a kind of polyoxyethylene glycol and modifying plastics pitch, solve existing bituminous material poor ductility, fragility is high, softening temperature is low problem.
Another object of the present invention is the preparation method providing above-mentioned modifying asphalt, can prepare the modifying asphalt that a kind of ductility is high, fragility is low, softening temperature is high, can recycle again to waste or used plastics.
The technical solution adopted in the present invention is: polyoxyethylene glycol and modifying plastics pitch, be made up of following material by mass percentage: the sulphur that the waste or used plastics that the gac that the polyoxyethylene glycol that mass fraction is 4.2% ~ 7%, mass fraction are 0.9% ~ 1.5%, mass fraction are 0.9% ~ 1.5%, mass fraction are 0.3% ~ 0.5%, mass fraction are the pitch of 89.5% ~ 93.7%, the quality summation of above each material is 100%.
Another technical scheme of the present invention is: the preparation method of polyoxyethylene glycol and modifying plastics pitch, comprises the steps:
The first step, get respectively mass fraction be 4.2% ~ 7% polyoxyethylene glycol, the mass fraction gac that is 0.9% ~ 1.5%, the mass fraction waste or used plastics that is 0.9% ~ 1.5%, mass fraction be 0.3% ~ 0.5% sulphur, mass fraction be the pitch of 89.5% ~ 93.7%, the quality summation of above each material is 100%;
Second step, prepares properties-correcting agent
The polyoxyethylene glycol that the first step is obtained at a first temperature thermostatically heating to melting, then raised temperature to the second temperature gradually, and keep, then in the polyoxyethylene glycol of melting, add waste or used plastics that the first step obtains until waste or used plastics melting completely wherein, by the polyoxyethylene glycol of above-mentioned melting and plastic stir evenly after, then add the gac that the first step obtains wherein, again stir, obtained properties-correcting agent, then properties-correcting agent is at room temperature cooled standing, obtain solid-state properties-correcting agent;
3rd step, pulverizes properties-correcting agent
The solid-state properties-correcting agent obtained by second step is put into pulverizer and is pulverized, and obtains modified grain;
4th step, prepares modifying asphalt
The pitch thermostatically heating the first step obtained is to molten state, then the pitch of melting is stirred while add the modified grain of the 3rd step acquisition wherein, form mixture, then mixture is dropped into high-shearing dispersion emulsifying machine and carry out first time emulsification, sulphur is added again in the mixture after first time emulsification, carry out second time emulsification again, until properties-correcting agent and sulphur are evenly distributed in the mixture, obtained polyoxyethylene glycol and modifying plastics pitch.
Feature of the present invention is also,
Be 160 DEG C ~ 170 DEG C to the first temperature of polyoxyethylene glycol thermostatically heating in second step, the second temperature is 200 DEG C ~ 210 DEG C; The time that cooling leaves standstill is 20 ~ 28 hours.
The median size of the modified grain obtained in the 3rd step is 2.5 ~ 3.5mm.
It is 150 DEG C ~ 160 DEG C to the temperature of pitch thermostatically heating in 4th step.
In 4th step during first time emulsification, in mulser, temperature is 175 DEG C ~ 180 DEG C, and the rotating speed of mulser is 2300 ~ 2700r/min, and emulsification times is 0.9 ~ 1.1h.
In 4th step during second time emulsification, in mulser, temperature is 175 DEG C ~ 180 DEG C, and the rotating speed of mulser is 2900 ~ 3100r/min, and emulsification times is 0.5 ~ 1h.
The invention has the beneficial effects as follows: it is high that polyoxyethylene glycol of the present invention and modifying plastics pitch have softening temperature, the feature that ductility is high, penetration degree is low, viscosity is high, the requirement that motorway uses pitch can be met, and the plastics in the present invention use waste or used plastics, plastics bag in people's daily life, the recycling for waste especially waste plastic provides a very useful approach.
Accompanying drawing explanation
Fig. 1 is schematic diagram polyoxyethylene glycol of the present invention and modifying plastics pitch being carried out to data results when softening temperature is tested;
Fig. 2 is the schematic diagram that polyoxyethylene glycol of the present invention and modifying plastics pitch carry out data results when ductility is tested;
Fig. 3 is the schematic diagram that polyoxyethylene glycol of the present invention and modifying plastics pitch carry out data results when penetration degree is tested.
Embodiment
Below in conjunction with embodiment, the present invention is described in detail.
Polyoxyethylene glycol of the present invention and modifying plastics pitch, be made up of following material by mass percentage: the sulphur that the plastics that the gac that the polyoxyethylene glycol that mass fraction is 4.2% ~ 7%, mass fraction are 0.9% ~ 1.5%, mass fraction are 0.9% ~ 1.5%, mass fraction are 0.3% ~ 0.5%, mass fraction are the pitch of 89.5% ~ 93.7%, the quality summation of above each material is 100%.
Embodiment 1
The first step, get respectively mass fraction be 4.2% polyoxyethylene glycol, the mass fraction gac that is 0.9%, the mass fraction plastics that are 0.9%, mass fraction be 0.3% sulphur, mass fraction be the pitch of 93.7%, the quality summation of above each material is 100%;
Second step, prepares properties-correcting agent
By polyoxyethylene glycol at the temperature of 160 DEG C thermostatically heating to melting, then raised temperature to 200 DEG C gradually, and keep, then in the polyoxyethylene glycol of melting, add plastics until plastics completely melting wherein, by the polyoxyethylene glycol of above-mentioned melting and plastic stir evenly after, then add gac wherein, again stir, obtained properties-correcting agent, more described properties-correcting agent is at room temperature cooled standing 20 hours, obtain solid-state properties-correcting agent;
3rd step, pulverizes properties-correcting agent
The solid-state properties-correcting agent obtained by second step is put into pulverizer and is pulverized, until the particle diameter of properties-correcting agent is 2.5mm, obtains modified grain;
4th step, prepares modifying asphalt
By pitch at the temperature of 150 DEG C thermostatically heating to molten state, then the pitch of melting is stirred while add the modified grain of the 3rd step acquisition wherein, form mixture, then described mixture is dropped into high-shearing dispersion emulsifying machine and carry out first time emulsification, in mulser, temperature is 175 DEG C, the rotating speed of mulser is 2300r/min, and emulsification times is 0.9h; In the mixture after first time emulsification, add sulphur again, then carry out second time emulsification, in mulser, temperature is 175 DEG C, and the rotating speed of mulser is 2900r/min, and emulsification times is 0.5h.Until properties-correcting agent and sulphur are evenly distributed in the mixture, obtained polyoxyethylene glycol and modifying plastics pitch.
Embodiment 2
The first step, get respectively mass fraction be 7% polyoxyethylene glycol, the mass fraction gac that is 1.5%, the mass fraction plastics that are 1.5%, mass fraction be 0.5% sulphur, mass fraction be the pitch of 89.5%, the quality summation of above each material is 100%;
Second step, prepares properties-correcting agent
By polyoxyethylene glycol at the temperature of 170 DEG C thermostatically heating to melting, then raised temperature to 210 DEG C gradually, and keep, then in the polyoxyethylene glycol of melting, add plastics until plastics completely melting wherein, by the polyoxyethylene glycol of above-mentioned melting and plastic stir evenly after, then add gac wherein, again stir, obtained properties-correcting agent, more described properties-correcting agent is at room temperature cooled standing 28 hours, obtain solid-state properties-correcting agent;
3rd step, pulverizes properties-correcting agent
The solid-state properties-correcting agent obtained by second step is put into pulverizer and is pulverized, until the particle diameter of properties-correcting agent is 3.5mm, obtains modified grain;
4th step, prepares modifying asphalt
By pitch at the temperature of 160 DEG C thermostatically heating to molten state, then the pitch of melting is stirred while add the modified grain of the 3rd step acquisition wherein, form mixture, then described mixture is dropped into high-shearing dispersion emulsifying machine and carry out first time emulsification, in mulser, temperature is 180 DEG C, the rotating speed of mulser is 2700r/min, and emulsification times is 1h; In the mixture after first time emulsification, add sulphur again, then carry out second time emulsification, in mulser, temperature is 180 DEG C, and the rotating speed of mulser is 3100r/min, and emulsification times is 1h.Until properties-correcting agent and sulphur are evenly distributed in the mixture, obtained polyoxyethylene glycol and modifying plastics pitch.
Embodiment 3
The first step, get respectively mass fraction be 5% polyoxyethylene glycol, the mass fraction gac that is 0.9%, the mass fraction plastics that are 1.2%, mass fraction be 0.4% sulphur, mass fraction be the pitch of 92.5%, the quality summation of above each material is 100%;
Second step, prepares properties-correcting agent
By polyoxyethylene glycol at the temperature of 165 DEG C thermostatically heating to melting, then raised temperature to 205 DEG C gradually, and keep, then in the polyoxyethylene glycol of melting, add plastics until plastics completely melting wherein, by the polyoxyethylene glycol of above-mentioned melting and plastic stir evenly after, then add gac wherein, again stir, obtained properties-correcting agent, more described properties-correcting agent is at room temperature cooled standing 24 hours, obtain solid-state properties-correcting agent;
3rd step, pulverizes properties-correcting agent
The solid-state properties-correcting agent obtained by second step is put into pulverizer and is pulverized, until the particle diameter of properties-correcting agent is 3mm, obtains modified grain;
4th step, prepares modifying asphalt
By pitch at the temperature of 155 DEG C thermostatically heating to molten state, then the pitch of melting is stirred while add the modified grain of the 3rd step acquisition wherein, form mixture, then described mixture is dropped into high-shearing dispersion emulsifying machine and carry out first time emulsification, in mulser, temperature is 178 DEG C, the rotating speed of mulser is 2500r/min, and emulsification times is 1h; In the mixture after first time emulsification, add sulphur again, then carry out second time emulsification, in mulser, temperature is 177 DEG C, and the rotating speed of mulser is 3000r/min, and emulsification times is 0.7h.Until properties-correcting agent and sulphur are evenly distributed in the mixture, obtained polyoxyethylene glycol and modifying plastics pitch.
Embodiment 4
The first step, get respectively mass fraction be 4.2% polyoxyethylene glycol, the mass fraction gac that is 1.3%, the mass fraction plastics that are 1.3%, mass fraction be 0.4% sulphur, mass fraction be the pitch of 92.8%, the quality summation of above each material is 100%;
Second step, prepares properties-correcting agent
By polyoxyethylene glycol at the temperature of 167 DEG C thermostatically heating to melting, then raised temperature to 203 DEG C gradually, and keep, then in the polyoxyethylene glycol of melting, add plastics until plastics completely melting wherein, by the polyoxyethylene glycol of above-mentioned melting and plastic stir evenly after, then add gac wherein, again stir, obtained properties-correcting agent, more described properties-correcting agent is at room temperature cooled standing 25 hours, obtain solid-state properties-correcting agent;
3rd step, pulverizes properties-correcting agent
The solid-state properties-correcting agent obtained by second step is put into pulverizer and is pulverized, until the particle diameter of properties-correcting agent is 3mm, obtains modified grain;
4th step, prepares modifying asphalt
By pitch at the temperature of 153 DEG C thermostatically heating to molten state, then the pitch of melting is stirred while add the modified grain of the 3rd step acquisition wherein, form mixture, then described mixture is dropped into high-shearing dispersion emulsifying machine and carry out first time emulsification, in mulser, temperature is 176 DEG C, the rotating speed of mulser is 2400r/min, and emulsification times is 0.9h; In the mixture after first time emulsification, add sulphur again, then carry out second time emulsification, in mulser, temperature is 180 DEG C, and the rotating speed of mulser is 3000r/min, and emulsification times is 0.8h.Until properties-correcting agent and sulphur are evenly distributed in the mixture, obtained polyoxyethylene glycol and modifying plastics pitch.
Polyoxyethylene glycol of the present invention and modifying plastics pitch have passed through following test, testing data and conclusion as follows:
1. softening temperature test
Modifying asphalt ring prepared by the inventive method be placed in scribble the talcous separant of glycerine sample base plate on, room temperature cooling 0.5h, with the doctor blade sample of heat, 15 minutes are left standstill in 5 DEG C of waters bath with thermostatic control, sample ring is put in the circular hole of support la m of softening temperature instrument, puts retaining ring, steel ball is placed on the centre of retaining ring, open concussion agitator, and start heating, sample can generate heat deliquescing sink, when it reaches with lower floor's contacts baseplate, read temperature, be accurate to 0.1 DEG C.
Experimental data is as shown in table 1:
| Softening temperature (DEG C) | 40 | 43 | 49 | 57 | 66 | 75 | 76 | 78 | 79 |
| Properties-correcting agent incorporation (%) | 0 | 2 | 4 | 6 | 8 | 10 | 12 | 14 | 16 |
With the content of modifier in table 1 for X-coordinate, take temperature as ordinate zou, draw out Fig. 1, this figure indicates mixing along with properties-correcting agent, the softening temperature of pitch can promote thereupon, is promoted to 80 DEG C nearly, until when the incorporation of properties-correcting agent reaches 12% ~ 16% from 40 DEG C, the softening temperature of modifying asphalt reaches maximum 79 DEG C, and tends towards stability.
2. ductility test
Ductility reflection be the snappiness of pitch, ductility is larger, and the snappiness of pitch is better, and at low temperatures, ductility is larger, then low-temperature cracking-resistance is better.
Modifying asphalt prepared by the inventive method and separant glycerine talcum powder mix even, be applied to the inner surface of clean dry sample base plate and two side forms, the sample of pitch is slowly injected mould inside, room temperature cooling 0.5h, 0.5h is left standstill in 5 DEG C of waters bath with thermostatic control, then the surface of the doctor blade sample of heat is used, put into water-bath 1.0h again, slough mould, be placed on the support of ductility machine, at this moment, start ductility machine, when sample is pulled off, the data that registering instrument shows are exactly the ductility of sample at 5 DEG C.
Experimental data is as shown in table 2:
| Ductility (cm) | 10 | 14 | 19 | 30 | 36 | 44 | 51 | 54 | 55 |
| Properties-correcting agent incorporation (%) | 0 | 2 | 4 | 6 | 8 | 10 | 12 | 14 | 16 |
With the content of modifier in table 2 for X-coordinate, take ductility value as ordinate zou, draw out Fig. 2, this figure indicates mixing along with properties-correcting agent, the ductility of pitch can promote thereupon, is promoted to 50cm from 10cm, until when the incorporation of properties-correcting agent reaches 12% ~ 16%, the ductility of modifying asphalt reaches maximum 55cm, and tends towards stability.
3. penetration degree test
The technical requirements of T0604-2000 in Asphalt Penetration tester satisfied " highway engineering pitch and Asphalt Mixture Experiment code " (JTJ052-2000), can be used for measuring bi tumenf orr oad, the penetration degree of modifying asphalt and the pin people degree of the distillation of liquid petroleum pitch or the rear residue of emulsified bitumen evaporation.Its standard test condition is temperature 25 DEG C, loading 100g, injection time 5s, and pin people degree is in 0.1mm.
Penetration degree is an important indicator of reflection consistency of asphalt, and modifier modification penetration of bitumens is different with the content difference of properties-correcting agent, and at different temperature, its penetration degree is also different.
Experimental data is as shown in table 3:
| Penetration degree (0.1mm) | 175 | 160 | 150 | 100 | 80 | 65 | 50 | 40 |
| Properties-correcting agent incorporation (%) | 0 | 2 | 4 | 6 | 8 | 10 | 12 | 14 |
With the content of modifier in table 3 for X-coordinate, be ordinate zou with penetration number, draw out Fig. 3, the penetration degree that this figure indicates modifying asphalt declines with the increase of properties-correcting agent, raises with the rising of temperature.Volume penetration degree more than 6% of properties-correcting agent reduces comparatively obvious, and adding after 12%, penetration degree rangeability is more and more come less, under the high temperature conditions than the change of cold condition penetration degree obviously.
4. viscosity test
Viscosity is that the one of measuring rheological property is measured, the size of frictional force when reflection fluid occurs to flow between its interior molecules.The viscosity characteristics of research viscous state modifying asphalt is for determining the suitable pumping temperature of modifying asphalt and mixing and stirring of modified asphalt mixture, very important when paving and roll temperature.
To modifying asphalt prepared by the inventive method, viscosity test is carried out at the temperature of 58 DEG C, we find, the viscosity of modifying asphalt increases with the increase of the dosage of interpolation properties-correcting agent, when the dosage of incorporating modified dose lower than 4% time, viscosity almost linearly increases, but when the dosage of incorporating modified dose reaches more than 4%, the viscosity of modifying asphalt of the present invention is significantly jumped.
Experimental data is as shown in table 4:
| Viscosity (MPa.s) | 1.003 | 1.206 | 1.213 | 1.569 | 1.785 | 1.965 | 2.631 | 2.600 |
| Properties-correcting agent incorporation (%) | 0 | 2 | 4 | 6 | 8 | 10 | 12 | 14 |
Experiment shows, viscosity increases with the increase of content of modifier, and Standard viscosity is between 1.5-2MPa.s, and therefore properties-correcting agent dosage is best at 6%-10%.At high temperature, the pitch that viscosity is larger, can produce less shearing strain, thus makes asphalt have better stable relation.
By the way, polyoxyethylene glycol of the present invention and modifying plastics pitch, solve existing bituminous material poor ductility, fragility is high, softening temperature is low problem.The preparation method of modifying asphalt of the present invention, can prepare the modifying asphalt that a kind of ductility is high, fragility is low, softening temperature is high, can recycle again to waste or used plastics.Can meet the requirement that motorway uses pitch, and the plastics in the present invention use waste or used plastics, plastics bag in people's daily life, the recycling for waste especially waste plastic provides a very useful approach.
Claims (6)
1. the preparation method of polyoxyethylene glycol and modifying plastics pitch, is characterized in that, comprises the steps:
The first step, get respectively mass fraction be 4.2% ~ 7% polyoxyethylene glycol, the mass fraction gac that is 0.9% ~ 1.5%, the mass fraction waste or used plastics that is 0.9% ~ 1.5%, mass fraction be 0.3% ~ 0.5% sulphur, mass fraction be the pitch of 89.5% ~ 93.7%, the quality summation of above each material is 100%;
Second step, prepares properties-correcting agent
The polyoxyethylene glycol that the first step is obtained at a first temperature thermostatically heating to melting, then raised temperature to the second temperature gradually, and keep, then in the polyoxyethylene glycol of melting, add waste or used plastics that the first step obtains until waste or used plastics melting completely wherein, by the polyoxyethylene glycol of above-mentioned melting and plastic stir evenly after, then add the gac that the first step obtains wherein, again stir, obtained properties-correcting agent, more described properties-correcting agent is at room temperature cooled standing, obtain solid-state properties-correcting agent;
3rd step, pulverizes properties-correcting agent
The solid-state properties-correcting agent obtained by second step is put into pulverizer and is pulverized, and obtains modified grain;
4th step, prepares modifying asphalt
The pitch thermostatically heating the first step obtained is to molten state, then the pitch of melting is stirred while add the modified grain of the 3rd step acquisition wherein, form mixture, then described mixture is dropped into high-shearing dispersion emulsifying machine and carry out first time emulsification, sulphur is added again in the mixture after first time emulsification, carry out second time emulsification again, until properties-correcting agent and sulphur are evenly distributed in the mixture, obtained polyoxyethylene glycol and modifying plastics pitch.
2. preparation method as claimed in claim 1, is characterized in that, be 160 DEG C ~ 170 DEG C to the first temperature of described polyoxyethylene glycol thermostatically heating in second step, the second temperature is 200 DEG C ~ 210 DEG C; The time that described cooling leaves standstill is 20 ~ 28 hours.
3. preparation method as claimed in claim 1, it is characterized in that, the median size of the modified grain obtained in the 3rd step is 2.5 ~ 3.5mm.
4. preparation method as claimed in claim 1, is characterized in that, is 150 DEG C ~ 160 DEG C to the temperature of pitch thermostatically heating described in the 4th step.
5. preparation method as claimed in claim 1, is characterized in that, during the emulsification of first time described in the 4th step, in mulser, temperature is 175 DEG C ~ 180 DEG C, and the rotating speed of mulser is 2300 ~ 2700r/min, and emulsification times is 0.9 ~ 1.1h.
6. preparation method as claimed in claim 1, is characterized in that, during the emulsification of second time described in the 4th step, in mulser, temperature is 175 DEG C ~ 180 DEG C, and the rotating speed of mulser is 2900 ~ 3100r/min, and emulsification times is 0.5 ~ 1h.
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| CN110396420B (en) * | 2019-08-08 | 2021-05-18 | 平顶山东晟高科实业有限公司 | Additive adding process in asphalt refining process |
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| EP0859030A1 (en) * | 1997-02-17 | 1998-08-19 | GERLAND Routes | Aqueous emusion of a bitumeous product |
| CN102417735A (en) * | 2011-09-08 | 2012-04-18 | 江阴泰富沥青有限公司 | Production processes of rock asphalt modified asphalt and mixture |
| CN102924937A (en) * | 2012-11-15 | 2013-02-13 | 陕西理工学院 | Modified asphalt with polyethylene glycol/activated carbon phase change material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0859030A1 (en) * | 1997-02-17 | 1998-08-19 | GERLAND Routes | Aqueous emusion of a bitumeous product |
| FR2759705B1 (en) * | 1997-02-17 | 1999-04-09 | Gerland Routes | AQUEOUS EMULSION OF A BITUMINOUS PRODUCT |
| CN102417735A (en) * | 2011-09-08 | 2012-04-18 | 江阴泰富沥青有限公司 | Production processes of rock asphalt modified asphalt and mixture |
| CN102924937A (en) * | 2012-11-15 | 2013-02-13 | 陕西理工学院 | Modified asphalt with polyethylene glycol/activated carbon phase change material and preparation method thereof |
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Effective date of registration: 20170718 Address after: 518000 Guangdong city of Shenzhen province Futian District overseas Chinese Town Road No. 2006 building 3 2502 based creative Patentee after: Shen Jun Address before: 723001 Hanzhoung, Chaoyang Road, East Street, No. 505, Dongguan Patentee before: Shaanxi University of Technology |
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Effective date of registration: 20180306 Address after: 518040 Guangdong city of Shenzhen province Futian District Zhuzilin Yihua building A building eighth floor No. 03 North Patentee after: SHENZHEN GREEN INDUSTRIAL DEVELOPMENT Co.,Ltd. Address before: 518000 Guangdong city of Shenzhen province Futian District overseas Chinese Town Road No. 2006 building 3 2502 based creative Patentee before: Shen Jun |