CN113025072A - Rubber powder modified asphalt and production process thereof - Google Patents
Rubber powder modified asphalt and production process thereof Download PDFInfo
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- CN113025072A CN113025072A CN202110377370.7A CN202110377370A CN113025072A CN 113025072 A CN113025072 A CN 113025072A CN 202110377370 A CN202110377370 A CN 202110377370A CN 113025072 A CN113025072 A CN 113025072A
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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
- C08L2205/03—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 discloses rubber powder modified asphalt, which is prepared from the following raw materials: the raw materials comprise the following components in parts by weight: 20-30 parts of asphalt, 10-20 parts of waste rubber powder, 10-20 parts of thermoplastic resin, 2-4 parts of thickening agent, 2-4 parts of fluidizing agent, 5-10 parts of heavy oil, 2-4 parts of rust inhibitor, 2-4 parts of defoaming agent, 2-4 parts of penetrating agent and 2-4 parts of antifreezing agent; asphalt is when modifying, through rust inhibitor and the defoaming agent to adding in the asphalt, the defoaming agent can be eliminated the inside bubble when the pitch stirring, and rust inhibitor can avoid the metal to take place the phenomenon of corrosion in the inside pitch, thereby improve modified asphalt's life, add fluidizing agent and penetrant in the pitch, fluidizing agent and penetrant cooperate, avoid the pitch to take place to condense the phenomenon of being not convenient for to store and use, and through the soaking of heavy oil to the rubber waste powder, make the rubber waste powder take place the inflation, can improve the mixed effect of pitch and rubber waste powder greatly.
Description
Technical Field
The invention relates to the technical field of rubber powder modified asphalt, in particular to rubber powder modified asphalt and a production process thereof.
Background
Asphalt is a black brown complex mixture composed of hydrocarbons with different molecular weights and non-metallic derivatives thereof, is one of high-viscosity organic liquids, mostly exists in the form of liquid or semisolid petroleum, has a black surface, is soluble in carbon disulfide and carbon tetrachloride, is a waterproof, moistureproof and anticorrosive organic cementing material, can be mainly divided into coal tar asphalt, petroleum asphalt and natural asphalt, the natural asphalt is stored underground, some forms mineral layers or is accumulated on the surface of a crust, the asphalt is mainly used for the industries of coatings, plastics, rubber and the like and paving pavements and the like, the number of automobiles is increased along with the development of economy, the waste tires are relatively increased, the utilization rate of resources is greatly improved by modifying the asphalt with the waste tires, and when the existing rubber powder modified asphalt is produced, rubber powder is added into the asphalt, the modified asphalt can be obtained by mixing the SBS modifier, the auxiliary agent and the cross-linking agent through grinding and stirring, but the following problems still exist:
when the asphalt is modified, the rubber powder is easy to precipitate in the asphalt, the asphalt is easy to solidify after being stored for a long time, the performance of the asphalt is greatly reduced, the asphalt is easy to mix external air into the asphalt when being stirred, so that the asphalt contains a large amount of bubbles, the modified asphalt has no good anti-freezing effect when being stored, and the use effect of the asphalt is greatly reduced.
Disclosure of Invention
The invention aims to provide rubber powder modified asphalt and a production process thereof, which aim to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the rubber powder modified asphalt is prepared from the following raw materials:
the raw materials comprise the following components in parts by weight: 20-30 parts of asphalt, 10-20 parts of waste rubber powder, 10-20 parts of thermoplastic resin, 2-4 parts of thickening agent, 2-4 parts of fluidizing agent, 5-10 parts of heavy oil, 2-4 parts of rust inhibitor, 2-4 parts of defoaming agent, 2-4 parts of penetrating agent and 2-4 parts of antifreezing agent.
As further preferable in the present technical solution: the thermoplastic resin comprises one or more of polyethylene, polypropylene, polyvinyl chloride, polystyrene, polyamide, polyformaldehyde and polycarbonate.
As further preferable in the present technical solution: the fluidizing agent is formed by mixing polyethylene glycol, diethylene glycol monobutyl ether, polysaccharide and polyphenyl ether, and the penetrating agent is polyethylene glycol.
As further preferable in the present technical solution: the mesh number of the waste rubber powder is 20-40 meshes.
As further preferable in the present technical solution: the thickener comprises one or more of silicon dioxide, cellulose ester, ethylene oxide, alginate, polyacrylamide, hydroxyethyl polymer and polyvinyl alcohol.
As further preferable in the present technical solution: the rust inhibitor comprises calcium nitrite, the defoaming agent comprises one or more of monoamide, bisamide, trialkyl melamine and aliphatic amine, and the antifreezing agent comprises triethanolamine and nitrite.
The invention also provides a production process of the rubber powder modified asphalt, which comprises the following steps:
firstly, placing waste rubber powder in heavy oil, soaking for 10-15min, taking out, placing asphalt, the waste rubber powder, thermoplastic resin and a thickening agent in a stirring box of a stirrer according to a certain proportion, heating the temperature in the stirring box to 150-180 ℃ through a heating pipe, and stirring and mixing for 10-15min through a vertical stirrer to obtain a mixture;
secondly, adding quantitative rust inhibitor and defoaming agent into the stirring box one by one, fully mixing the mixture with quantitative rust inhibitor and defoaming agent for 5-10min by the stirring machine, and controlling the temperature in the stirring box at 100-130 ℃;
step three, adding the fluidizing agent and the penetrant into a stirring box one by one, stirring for 5-10min by a stirrer, controlling the temperature in the stirring box to be 50-60 ℃, adding the antifreezing agent into the stirring box, and stirring for 3-5min again;
and step four, obtaining modified asphalt after stirring, and cooling the modified asphalt to normal temperature, and taking out the modified asphalt for storage and use.
As further preferable in the present technical solution: in the first step, the stirring speed in the stirring tank of the stirrer is 2000-3000 r/min.
Compared with the prior art, the invention has the beneficial effects that:
when the asphalt is modified, the rust inhibitor and the defoaming agent are added into the asphalt, the defoaming agent can eliminate bubbles inside the asphalt during stirring, the rust inhibitor can avoid the phenomenon that metal is rusted inside the asphalt, so that the service life of the modified asphalt is prolonged, the fluidizing agent and the penetrating agent are added into the asphalt, the fluidizing agent and the penetrating agent are matched, the phenomenon that the asphalt is condensed and is inconvenient to store and use is avoided, the waste rubber powder is soaked by heavy oil, the waste rubber powder is expanded, and the mixing effect of the asphalt and the waste rubber powder can be greatly improved.
Drawings
FIG. 1 is a flow chart of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 1, the present invention provides a technical solution: the rubber powder modified asphalt is prepared from the following raw materials:
the raw materials comprise the following components in parts by weight: 20 parts of asphalt, 10 parts of waste rubber powder, 10 parts of thermoplastic resin, 2 parts of thickening agent, 2 parts of fluidizing agent, 5 parts of heavy oil, 2 parts of rust inhibitor, 2 parts of defoaming agent, 2 parts of penetrating agent and 2 parts of antifreezing agent.
In this embodiment, specifically: the thermoplastic resin comprises polyethylene, polypropylene and polyvinyl chloride; through the setting of the thermoplastic resin, the thermoplastic resin has the characteristics of higher mechanical energy, simple and convenient processing and forming and good impact resistance, and the service life of the modified asphalt can be greatly prolonged.
In this embodiment, specifically: the fluidizing agent is prepared by mixing polyethylene glycol, diethylene glycol monobutyl ether, polysaccharide and polyphenyl ether, and the penetrating agent is polyethylene glycol; when adding the fluidizing agent to the inside of modified asphalt, can reduce rubber asphalt's viscosity to make things convenient for the work that the staff will modify the pitch after store the transportation and spray the construction, through adding the penetrant, make rubber modified asphalt when storing, do not educe in the certain time and do not deposit, improve modified asphalt's storage effect.
In this embodiment, specifically: the mesh number of the waste rubber powder is 20 meshes; through controlling the mesh number of the waste rubber powder, the mixing effect of the asphalt and the waste rubber powder can be improved, and the phenomenon that the waste rubber powder is too thin or too thick to cause uneven mixing of the asphalt and the waste rubber powder is avoided.
In this embodiment, specifically: the thickener comprises silicon dioxide, cellulose ester and ethylene oxide; through the addition of the thickening agent, the asphalt can be mixed with waste rubber powder, thermoplastic resin and an additive when being modified, and the water-reducing thickening effect is achieved.
In this embodiment, specifically: the corrosion inhibitor comprises calcium nitrite, the defoamer comprises monoamide and bisamide, and the antifreeze comprises nitrite; through the addition of rust inhibitor, can play the effect of hindering the rust to pitch surface and the metal with pitch contact, through the addition of defoaming agent, can carry out the effect of eliminating to the inside bubble of pitch, through the addition of antifreeze, avoid pitch to take place the phenomenon of frost crack, improve the life of pitch.
The invention also provides a production process of the rubber powder modified asphalt, which comprises the following steps:
firstly, placing waste rubber powder in heavy oil, soaking for 10min, taking out, placing asphalt, the waste rubber powder, thermoplastic resin and a thickening agent in a stirring box of a stirrer according to a certain proportion, heating the temperature in the stirring box to 150 ℃ through a heating pipe, and stirring and mixing for 10min through a vertical stirrer to obtain a mixture;
secondly, adding quantitative rust inhibitor and defoaming agent into the stirring box one by one, fully mixing the mixture with quantitative rust inhibitor and defoaming agent for 5min by the stirring machine, and controlling the temperature in the stirring box at 100 ℃;
step three, adding the fluidizing agent and the penetrant into a stirring box one by one, stirring for 5min by a stirrer, controlling the temperature in the stirring box to be 50 ℃, adding the antifreezing agent into the stirring box, and stirring for 3min again;
and step four, obtaining modified asphalt after stirring, and cooling the modified asphalt to normal temperature, and taking out the modified asphalt for storage and use.
In this embodiment, specifically: in the first step, the stirring speed in the stirring tank of the stirrer is 2000 r/min.
Example two
Referring to fig. 1, the present invention provides a technical solution: the rubber powder modified asphalt is prepared from the following raw materials:
the raw materials comprise the following components in parts by weight: 25 parts of asphalt, 15 parts of waste rubber powder, 15 parts of thermoplastic resin, 3 parts of thickening agent, 3 parts of fluidizing agent, 8 parts of heavy oil, 3 parts of rust inhibitor, 3 parts of defoaming agent, 3 parts of penetrating agent and 3 parts of antifreezing agent.
In this embodiment, specifically: the thermoplastic resin comprises polypropylene, polyvinyl chloride and polystyrene; through the setting of the thermoplastic resin, the thermoplastic resin has the characteristics of higher mechanical energy, simple and convenient processing and forming and good impact resistance, and the service life of the modified asphalt can be greatly prolonged.
In this embodiment, specifically: the fluidizing agent is prepared by mixing polyethylene glycol, diethylene glycol monobutyl ether, polysaccharide and polyphenyl ether, and the penetrating agent is polyethylene glycol; when adding the fluidizing agent to the inside of modified asphalt, can reduce rubber asphalt's viscosity to make things convenient for the work that the staff will modify the pitch after store the transportation and spray the construction, through adding the penetrant, make rubber modified asphalt when storing, do not educe in the certain time and do not deposit, improve modified asphalt's storage effect.
In this embodiment, specifically: the mesh number of the waste rubber powder is 30 meshes; through controlling the mesh number of the waste rubber powder, the mixing effect of the asphalt and the waste rubber powder can be improved, and the phenomenon that the waste rubber powder is too thin or too thick to cause uneven mixing of the asphalt and the waste rubber powder is avoided.
In this embodiment, specifically: the thickener comprises ethylene oxide, alginate and polyacrylamide; through the addition of the thickening agent, the asphalt can be mixed with waste rubber powder, thermoplastic resin and an additive when being modified, and the water-reducing thickening effect is achieved.
In this embodiment, specifically: the rust inhibitor comprises calcium nitrite, the defoaming agent comprises trialkyl melamine and fatty amine, and the antifreezing agent comprises triethanolamine; through the addition of rust inhibitor, can play the effect of hindering the rust to pitch surface and the metal with pitch contact, through the addition of defoaming agent, can carry out the effect of eliminating to the inside bubble of pitch, through the addition of antifreeze, avoid pitch to take place the phenomenon of frost crack, improve the life of pitch.
The invention also provides a production process of the rubber powder modified asphalt, which comprises the following steps:
firstly, placing waste rubber powder in heavy oil, soaking for 13min, taking out, placing asphalt, the waste rubber powder, thermoplastic resin and a thickening agent in a stirring box of a stirrer according to a certain proportion, heating the temperature in the stirring box to 165 ℃ through a heating pipe, and stirring and mixing for 13min through a vertical stirrer to obtain a mixture;
secondly, adding quantitative rust inhibitor and defoaming agent into the stirring box one by one, fully mixing the mixture with quantitative rust inhibitor and defoaming agent for 8min by the stirring machine, and controlling the temperature in the stirring box at 120 ℃;
step three, adding the fluidizing agent and the penetrant into a stirring box one by one, stirring for 8min by a stirrer, controlling the temperature in the stirring box to 55 ℃, adding the antifreezing agent into the stirring box, and stirring for 4min again;
and step four, obtaining modified asphalt after stirring, and cooling the modified asphalt to normal temperature, and taking out the modified asphalt for storage and use.
In this embodiment, specifically: in the first step, the stirring speed in the stirring tank of the stirrer is 2500 r/min.
EXAMPLE III
Referring to fig. 1, the present invention provides a technical solution: the rubber powder modified asphalt is prepared from the following raw materials:
the raw materials comprise the following components in parts by weight: 30 parts of asphalt, 20 parts of waste rubber powder, 20 parts of thermoplastic resin, 4 parts of thickening agent, 4 parts of fluidizing agent, 10 parts of heavy oil, 4 parts of rust inhibitor, 4 parts of defoaming agent, 4 parts of penetrating agent and 4 parts of antifreezing agent.
In this embodiment, specifically: the thermoplastic resin comprises polyamide, polyformaldehyde and polycarbonate; through the setting of the thermoplastic resin, the thermoplastic resin has the characteristics of higher mechanical energy, simple and convenient processing and forming and good impact resistance, and the service life of the modified asphalt can be greatly prolonged.
In this embodiment, specifically: the fluidizing agent is prepared by mixing polyethylene glycol, diethylene glycol monobutyl ether, polysaccharide and polyphenyl ether, and the penetrating agent is polyethylene glycol; when adding the fluidizing agent to the inside of modified asphalt, can reduce rubber asphalt's viscosity to make things convenient for the work that the staff will modify the pitch after store the transportation and spray the construction, through adding the penetrant, make rubber modified asphalt when storing, do not educe in the certain time and do not deposit, improve modified asphalt's storage effect.
In this embodiment, specifically: the mesh number of the waste rubber powder is 40 meshes; through controlling the mesh number of the waste rubber powder, the mixing effect of the asphalt and the waste rubber powder can be improved, and the phenomenon that the waste rubber powder is too thin or too thick to cause uneven mixing of the asphalt and the waste rubber powder is avoided.
In this embodiment, specifically: the thickener comprises polyacrylamide, hydroxyethyl polymer and polyvinyl alcohol; through the addition of the thickening agent, the asphalt can be mixed with waste rubber powder, thermoplastic resin and an additive when being modified, and the water-reducing thickening effect is achieved.
In this embodiment, specifically: the rust inhibitor comprises calcium nitrite, the antifoaming agent comprises bisamide and fatty amine, and the antifreezing agent comprises nitrite; through the addition of rust inhibitor, can play the effect of hindering the rust to pitch surface and the metal with pitch contact, through the addition of defoaming agent, can carry out the effect of eliminating to the inside bubble of pitch, through the addition of antifreeze, avoid pitch to take place the phenomenon of frost crack, improve the life of pitch.
The invention also provides a production process of the rubber powder modified asphalt, which comprises the following steps:
firstly, placing waste rubber powder in heavy oil, soaking for 15min, taking out, placing asphalt, the waste rubber powder, thermoplastic resin and a thickening agent in a stirring box of a stirrer according to a certain proportion, heating the temperature in the stirring box to 180 ℃ through a heating pipe, and stirring and mixing for 15min through a vertical stirrer to obtain a mixture;
secondly, adding quantitative rust inhibitor and defoaming agent into the stirring box one by one, fully mixing the mixture with quantitative rust inhibitor and defoaming agent for 10min by the stirring machine, and controlling the temperature in the stirring box at 130 ℃;
step three, adding the fluidizing agent and the penetrant into a stirring box one by one, stirring for 10min by a stirrer, controlling the temperature in the stirring box to be 60 ℃, adding the antifreezing agent into the stirring box, and stirring for 5min again;
and step four, obtaining modified asphalt after stirring, and cooling the modified asphalt to normal temperature, and taking out the modified asphalt for storage and use.
In this embodiment, specifically: in the first step, the stirring speed in the stirring tank of the stirrer is 3000 r/min.
Working principle or structural principle, when in use, a worker places the waste rubber powder in heavy oil and takes out the waste rubber powder after soaking, the waste rubber powder expands after soaking, the asphalt, the waste rubber powder, the thermoplastic resin and the thickening agent are placed in a stirring box of a stirrer according to a certain proportion, the temperature in the stirring box is heated through a heating pipe, when the temperature reaches a preset temperature, the asphalt, the waste rubber powder, the thermoplastic resin and the thickening agent are stirred and mixed through a vertical stirrer to obtain a mixture, at the moment, quantitative rust inhibitor and defoaming agent are added into the stirring box one by one, the mixture is fully mixed with the quantitative rust inhibitor and defoaming agent through the stirrer again, the temperature in the stirring box is controlled, the defoaming agent can eliminate bubbles in the asphalt during stirring, the rust inhibitor can avoid the phenomenon that metal is corroded in the asphalt, and fluidizing agent and penetrating agent are added into the stirring box one by one, through the stirring of mixer, and to the temperature control in the agitator tank, fluidizing agent and penetrant cooperate, avoid pitch to take place to condense and be not convenient for store and the phenomenon of use, add antifreeze into the agitator tank and stir again, antifreeze can avoid pitch to lead to the phenomenon of frost crack when weather is too cold, can obtain the pitch after the modification after the stirring is accomplished, and the pitch temperature after will modifying falls to the normal atmospheric temperature, can take out it and store and use.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The rubber powder modified asphalt is characterized by being prepared from the following raw materials:
the raw materials comprise the following components in parts by weight: 20-30 parts of asphalt, 10-20 parts of waste rubber powder, 10-20 parts of thermoplastic resin, 2-4 parts of thickening agent, 2-4 parts of fluidizing agent, 5-10 parts of heavy oil, 2-4 parts of rust inhibitor, 2-4 parts of defoaming agent, 2-4 parts of penetrating agent and 2-4 parts of antifreezing agent.
2. The crumb modified asphalt of claim 1, wherein: the thermoplastic resin comprises one or more of polyethylene, polypropylene, polyvinyl chloride, polystyrene, polyamide, polyformaldehyde and polycarbonate.
3. The crumb modified asphalt of claim 1, wherein: the fluidizing agent is formed by mixing polyethylene glycol, diethylene glycol monobutyl ether, polysaccharide and polyphenyl ether, and the penetrating agent is polyethylene glycol.
4. The crumb modified asphalt of claim 1, wherein: the mesh number of the waste rubber powder is 20-40 meshes.
5. The crumb modified asphalt of claim 1, wherein: the thickener comprises one or more of silicon dioxide, cellulose ester, ethylene oxide, alginate, polyacrylamide, hydroxyethyl polymer and polyvinyl alcohol.
6. The crumb modified asphalt of claim 1, wherein: the rust inhibitor comprises calcium nitrite, the defoaming agent comprises one or more of monoamide, bisamide, trialkyl melamine and aliphatic amine, and the antifreezing agent comprises triethanolamine and nitrite.
7. The production process of the rubber powder modified asphalt is characterized by comprising the following steps:
firstly, placing waste rubber powder in heavy oil, soaking for 10-15min, taking out, placing asphalt, the waste rubber powder, thermoplastic resin and a thickening agent in a stirring box of a stirrer according to a certain proportion, heating the temperature in the stirring box to 150-180 ℃ through a heating pipe, and stirring and mixing for 10-15min through a vertical stirrer to obtain a mixture;
secondly, adding quantitative rust inhibitor and defoaming agent into the stirring box one by one, fully mixing the mixture with quantitative rust inhibitor and defoaming agent for 5-10min by the stirring machine, and controlling the temperature in the stirring box at 100-130 ℃;
step three, adding the fluidizing agent and the penetrant into a stirring box one by one, stirring for 5-10min by a stirrer, controlling the temperature in the stirring box to be 50-60 ℃, adding the antifreezing agent into the stirring box, and stirring for 3-5min again;
and step four, obtaining modified asphalt after stirring, and cooling the modified asphalt to normal temperature, and taking out the modified asphalt for storage and use.
8. The process for producing crumb rubber modified asphalt according to claim 7, wherein: in the first step, the stirring speed in the stirring tank of the stirrer is 2000-3000 r/min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110377370.7A CN113025072A (en) | 2021-04-08 | 2021-04-08 | Rubber powder modified asphalt and production process thereof |
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| CN202110377370.7A CN113025072A (en) | 2021-04-08 | 2021-04-08 | Rubber powder modified asphalt and production process thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115044218A (en) * | 2022-07-12 | 2022-09-13 | 南通交融建设工程有限公司 | High-performance asphalt mixture and preparation method thereof |
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Application publication date: 20210625 |