CN108165034A - A kind of nano-particle and lake asphalt composite modified asphalt and preparation method thereof - Google Patents
A kind of nano-particle and lake asphalt composite modified asphalt and preparation method thereof Download PDFInfo
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- CN108165034A CN108165034A CN201711462131.1A CN201711462131A CN108165034A CN 108165034 A CN108165034 A CN 108165034A CN 201711462131 A CN201711462131 A CN 201711462131A CN 108165034 A CN108165034 A CN 108165034A
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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
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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Abstract
The invention discloses a kind of nano-particles and lake asphalt composite modified asphalt, are made of the component of following parts by weight：64 ~ 82 parts of matrix pitch, 3 ~ 6 parts of nano silicon dioxide, 15 ~ 30 parts of lake asphalt.The invention also discloses the preparation methods of a kind of nano-particle and lake asphalt composite modified asphalt.The present invention carries out matrix pitch as modifying agent by using lake asphalt and nano silicon dioxide composite modified, lake asphalt modifying agent, which can be integrated, improves the advantage of matrix pitch high temperature, cryogenic property and nano-silicon dioxide modified dose of improvement matrix pitch endurance quality, and Comprehensive improves matrix pitch high temperature, low temperature, endurance quality.Composite modified asphalt property is stable, uniform in material, performance protrudes, and has good Technological Economy prospect.The composite modified asphalt of the present invention is of low cost, and preparation process is simple, with good economic efficiency.
Description
Technical field
The present invention relates to modified asphalt technology fields, and in particular to a kind of nano-particle and lake asphalt composite modified asphalt and
Preparation method.
Background technology
With the fast development of highway in China construction, bituminous paving has been obtained extensively in China with its superior function
Using.Increasing however as road Traffic Volume, axle for vehicle, which carries, constantly to be aggravated, and the pavement performance of pitch is required also constantly to increase
It is high.Various function admirables, moderate modifying agent are usually added in pitch, is to improve the relatively effective side of asphalt performance
Method.However, each modifying agent often can only be improved the performance of part one of pitch, if thinking the height of improvement pitch comprehensively
Temperature, low temperature, endurance quality, using a variety of modifying agent to it is bituminous composite modified be a kind of effective method.
Lake asphalt is that oil is constantly emerged from the earth's crust, is present in natural lake, through precipitating for a long time, changing, hardening generation
Bitumen.Due to natural environment long-term co-existence, so lake asphalt property is highly stable, prepared as modifying agent
Modified pitch is remarkably improved the high temperature and cryogenic property of pitch.However existing modified pitch preparation process needs high-temperature stirring
Lake asphalt is melted, lake asphalt is caused not have apparent improvement to the endurance quality of matrix pitch.
Nano silicon dioxide is the nano-particle that a kind of property is stablized, and can improve other materials anti-aging property, be made
Modified pitch is prepared for modifying agent, the endurance quality of pitch can be greatly improved.However nano silicon dioxide is as a kind of inorganic material
Material, it is bad with bitumen compatibility, it is directly incorporated into pitch and is susceptible to isolation.
Invention content
The defects of it is an object of the invention to overcome the prior art, provides a kind of asphalt performance improvement good nanoparticle
Son and lake asphalt composite modified asphalt.
The invention is realized in this way：
A kind of nano-particle and lake asphalt composite modified asphalt, are made of the component of following parts by weight：Matrix pitch 64~
82 parts, 3~6 parts of nano silicon dioxide, 15~30 parts of lake asphalt.
Further scheme is：
The lake asphalt is Trinidad Lake Asphalt.
Lake asphalt has good compatibility with matrix pitch.It is interacted by lake asphalt and matrix pitch, asphalt adhesive
Group's polarity is enhanced, and colloform texture is caused to be changed into molten gel-type and gel-type from colloidal sol type, is conducive to improve asphalt high-temperature
And cryogenic property.
Further scheme is：
The nano silicon dioxide is the nano silicon dioxide that organises made from after inorganic nano silica organises.
By using the nano silicon dioxide that organises, the compatibility of silica and matrix pitch can be effectively improved.Nanometer
Silica have excellent anti-aging property, as be conducive in modifying agent doped matrix pitch improve asphalt durability energy.
The present invention is modified matrix pitch by nano silicon dioxide and lake asphalt, is dripped in nano silicon dioxide and lake
Under green collective effect, high-temperature behavior, cryogenic property and the endurance quality of matrix pitch are significantly increased.
It is another object of the present invention to provide the preparation methods of a kind of nano-particle and lake asphalt composite modified asphalt.
The nano-particle of the present invention and the preparation method of lake asphalt composite modified asphalt, include the following steps：
(1) blocky lake asphalt is added in into grinding and sieving in pulverizer, lake asphalt modifying agent is made；
(2) inorganic nano silica is organised, is made and organises nano-silicon dioxide modified dose；
(3) by lake asphalt modifying agent, organise nano-silicon dioxide modified dose with matrix pitch by scheduled mixture proportion
It mixes, is then placed in 175~190 DEG C of baking oven at 175~190 DEG C, taken out after 50~80min of development；
(4) mixture obtained by step (3) is used into high speed shear instrument within the temperature range of 175~190 DEG C with 3000~
The speed of 4500r/min shears 50~80min, until pitch is uniform and stable, when being in that surface is smooth after cooling, obtains compound change
Property pitch.
Further scheme is：
In step (3), scheduled mixture proportion refers to ratio by weight：64~82 parts of matrix pitch, organise nanometer
Silica modified dose 3~6 parts, 15~30 parts of lake asphalt modifying agent.
Further scheme is：
Sieving refers to that the lake asphalt after crushing crosses 100~170 mesh sieve in step (1).
Further scheme is：
In step (2) inorganic nano silica organise refer to 3~6 parts of nano-silica powder material mixing 60~
In 120 parts of toluene solutions, and add 1.5~3 parts of silane coupling agent.After silane coupling agent complete hydrolysis, at 110~125 DEG C
Lower oil bath heating and 5~8h of high-speed stirred.Room temperature is subsequently cooled to, is separated by filtration removing toluene.Then 5 are washed to it with acetone
~8h is placed in baking oven and is ground up, sieved after drying, is made and organises nano-silicon dioxide modified dose.
Wherein, any one in silane coupling agent KH550, KH560, KH570, KH580.
Using above-mentioned technical proposal, the accessible advantageous effect of the present invention includes：
(1) present invention carries out compound change as modifying agent by using lake asphalt and nano silicon dioxide to matrix pitch
Property, can integrate lake asphalt modifying agent improves matrix pitch high temperature, cryogenic property and nano-silicon dioxide modified dose of improvement matrix
The advantage of asphalt durability energy, Comprehensive improve matrix pitch high temperature, low temperature, endurance quality.Composite modified asphalt property is steady
Fixed, uniform in material, performance protrudes, and has good Technological Economy prospect.
(2) present invention proposes a kind of simple and practicable, convenient for nano-particle and the lake asphalt composite modified asphalt system of popularization
Preparation Method.The lake asphalt modifying agent proposed in preparation method pulverizes and sieves and two technologies of nanometer titanium dioxide silico-organic, raising
Two kinds of modifying agent and matrix pitch compatibility, improve modified effect of the modifying agent to matrix pitch.
(3) composite modified asphalt of the invention is of low cost, and preparation process is simple, with good economic efficiency.
Specific embodiment
With reference to embodiment, the invention will be further described：
Embodiment 1
A kind of nano-particle and lake asphalt composite modified asphalt, ingredient is by weight：82 parts of matrix pitch, nanometer two
3 parts of silica, 15 parts of lake asphalt.Selected lake asphalt is Trinidad Lake Asphalt, and nano silicon dioxide is the nano-silica that organises
SiClx.
The preparation method of the nano-particle and lake asphalt composite modified asphalt is as follows：
(1) blocky lake asphalt is added in into grinding and sieving in pulverizer and sieves with 100 mesh sieve disk, lake asphalt modifying agent is made.
(2) 3 parts of nano-silica powder material are mixed in 60 parts of toluene solutions, and adds 1.5 parts of silane coupling agent
(KH550).After silane coupling agent complete hydrolysis, oil bath heating and high-speed stirred 5h at 110 DEG C.It is subsequently cooled to room temperature, mistake
Filter is separated off toluene.Then 5h is washed to it with acetone, is placed in baking oven and is ground up, sieved after drying, the nanometer two that organises is made
Silica modified dose.
(3) by lake asphalt modifying agent, organise nano-silicon dioxide modified dose with matrix pitch by scheduled mixture proportion
It mixes, is then placed in 175 DEG C of baking oven at 175 DEG C, taken out after development 50min,
(4) use high speed shear instrument within the temperature range of 175 DEG C with 3000r/min's in mixture obtained by step (3)
Speed shears 50min, until pitch is uniform and stable, when being in that surface is smooth after cooling, composite modified asphalt is made.
Embodiment 2
A kind of nano-particle and lake asphalt composite modified asphalt, ingredient is by weight：76 parts of matrix pitch, nanometer two
4 parts of silica, 20 parts of lake asphalt.Selected lake asphalt is Trinidad Lake Asphalt, and nano silicon dioxide is the nano-silica that organises
SiClx.
The preparation method of the nano-particle and lake asphalt composite modified asphalt is as follows：
(1) blocky lake asphalt is added in pulverizer and smashes it through sieved 120 mesh screen tray, lake asphalt modifying agent is made.
(2) 4 parts of nano-silica powder material are mixed in 80 parts of toluene solutions, and adds 2 parts of silane coupling agent
(KH560).After silane coupling agent complete hydrolysis, oil bath heating and high-speed stirred 6h at 115 DEG C.It is subsequently cooled to room temperature, mistake
Filter is separated off toluene.Then 6h is washed to it with acetone, is placed in baking oven and is ground up, sieved after drying, the nanometer two that organises is made
Silica modified dose.
(3) by lake asphalt modifying agent, organise nano-silicon dioxide modified dose with matrix pitch by scheduled mixture proportion
It mixes, is then placed in 180 DEG C of baking oven at 180 DEG C, taken out after development 60min,
(4) use high speed shear instrument within the temperature range of 180 DEG C with 3500r/min's in mixture obtained by step (3)
Speed shears 60min, until pitch is uniform and stable, when being in that surface is smooth after cooling, composite modified asphalt is made.
Embodiment 3
A kind of nano-particle and lake asphalt composite modified asphalt, ingredient is by weight：70 parts of matrix pitch, nanometer two
5 parts of silica, 25 parts of lake asphalt.Selected lake asphalt is Trinidad Lake Asphalt, and nano silicon dioxide is the nano-silica that organises
SiClx.
The preparation method of the nano-particle and lake asphalt composite modified asphalt is as follows：
(1) blocky lake asphalt is added in pulverizer and smashes it through sieved 140 mesh screen tray, lake asphalt modifying agent is made.
(2) 5 parts of nano-silica powder material are mixed in 100 parts of toluene solutions, and adds 2.5 parts of silane coupling agent
(KH570).After silane coupling agent complete hydrolysis, oil bath heating and high-speed stirred 7h at 120 DEG C.It is subsequently cooled to room temperature, mistake
Filter is separated off toluene.Then 7h is washed to it with acetone, is placed in baking oven and is ground up, sieved after drying, the nanometer two that organises is made
Silica modified dose.
(3) by lake asphalt modifying agent, organise nano-silicon dioxide modified dose with matrix pitch by scheduled mixture proportion
It mixes, is then placed in 185 DEG C of baking oven at 185 DEG C, taken out after development 70min,
(4) use high speed shear instrument within the temperature range of 185 DEG C with 4000r/min's in mixture obtained by step (3)
Speed shears 70min, until pitch is uniform and stable, when being in that surface is smooth after cooling, composite modified asphalt is made.
Embodiment 4
A kind of nano-particle and lake asphalt composite modified asphalt, ingredient is by weight：64 parts of matrix pitch, nanometer two
6 parts of silica, 30 parts of lake asphalt.Selected lake asphalt is Trinidad Lake Asphalt, and nano silicon dioxide is the nano-silica that organises
SiClx.
The preparation method of the nano-particle and lake asphalt composite modified asphalt is as follows：
(1) blocky lake asphalt is added in pulverizer and smashes it through sieved 170 mesh screen tray, lake asphalt modifying agent is made.
(2) 6 parts of nano-silica powder material are mixed in 120 parts of toluene solutions, and adds 3 parts of silane coupling agent
(KH580).After silane coupling agent complete hydrolysis, oil bath heating and high-speed stirred 8h at 125 DEG C.It is subsequently cooled to room temperature, mistake
Filter is separated off toluene.Then 8h is washed to it with acetone, is placed in baking oven and is ground up, sieved after drying, the nanometer two that organises is made
Silica modified dose.
(3) by lake asphalt modifying agent, organise nano-silicon dioxide modified dose with matrix pitch by scheduled mixture proportion
It mixes, is then placed in 190 DEG C of baking oven at 190 DEG C, taken out after development 80min,
(4) use high speed shear instrument within the temperature range of 190 DEG C with 4500r/min's in mixture obtained by step (3)
Speed shears 80min, until pitch is uniform and stable, when being in that surface is smooth after cooling, composite modified asphalt is made.
For the performance of composite modified asphalt in the verification present invention, using matrix pitch as control group, prepared by the present invention
Embodiment is experimental group, carries out the experiment of relevant item, and result of the test is as shown in the table：
Equivalent softening point in upper table, equivalent brittle point, penetration ratio, ageing index according to《Highway engineering pitch and pitch mix
Close material testing regulations》Computational methods described in (JTG E20-2011) calculate, asphalt grade (PG) high temperature, low temperature series classification temperature
Spend basis《Measure the series classification temperature of grading performance (PG) asphalt binder and the standard practice instructions of series classification》
Computational methods described in (ASTMD7643-10) calculate.
Equivalent softening point and asphalt grade (PG) high temperature series classification temperature are relation degree analysis of high-temperature performance indexes of asphalt in upper table；Equivalent
Softening point and asphalt grade (PG) high temperature series classification temperature are higher, and high temperature performance of asphalt is better.Equivalent brittle point and asphalt grade
(PG) low temperature series classification temperature is pitch cryogenic property index；Equivalent brittle point and asphalt grade (PG) low temperature series classification temperature
Lower, pitch cryogenic property is better.When ageing index is asphalt durability energy index to needle penetration；Penetration ratio is higher, aging
The lower index the lower, and asphalt durability can be better.
By data in upper table it is found that composite modified asphalt prepared in 1~embodiment of embodiment 4 is compared to matrix pitch
With better high temperature, low temperature, endurance quality, and preparation process is simple, and the prices of raw materials are cheap, before having wide application
Scape.
Although reference be made herein to invention has been described for explanatory embodiment of the invention, and above-described embodiment is only this hair
Bright preferable embodiment, embodiments of the present invention are simultaneously not restricted to the described embodiments, it should be appreciated that people in the art
Member can be designed that a lot of other modifications and embodiment, these modifications and embodiment will be fallen in principle disclosed in the present application
Within scope and spirit.
Claims (8)
1. a kind of nano-particle and lake asphalt composite modified asphalt, it is characterised in that be made of the component of following parts by weight：Matrix
64 ~ 82 parts of pitch, 3 ~ 6 parts of nano silicon dioxide, 15 ~ 30 parts of lake asphalt.
2. nano-particle and lake asphalt composite modified asphalt according to claim 1, it is characterised in that：
The lake asphalt is Trinidad Lake Asphalt.
3. nano-particle and lake asphalt composite modified asphalt according to claim 1, it is characterised in that：
The nano silicon dioxide is the nano silicon dioxide that organises made from after inorganic nano silica organises.
4. the preparation method of a kind of nano-particle and lake asphalt composite modified asphalt, it is characterised in that include the following steps：
（1）Blocky lake asphalt is added in into grinding and sieving in pulverizer, lake asphalt modifying agent is made；
（2）Inorganic nano silica is organised, is made and organises nano-silicon dioxide modified dose；
（3）By lake asphalt modifying agent, organise nano-silicon dioxide modified dose with matrix pitch by scheduled mixture proportion 175
It mixes, is then placed in 175 ~ 190 DEG C of baking oven at ~ 190 DEG C, taken out after 50 ~ 80min of development；
（4）By step（3）Gained mixture uses high speed shear instrument within the temperature range of 175 ~ 190 DEG C with 3000 ~ 4500r/
The speed of min shears 50 ~ 80min, until pitch is uniform and stable, when being in that surface is smooth after cooling, obtains composite modified asphalt.
5. the preparation method of nano-particle and lake asphalt composite modified asphalt according to claim 4, it is characterised in that：
Step（3）In, scheduled mixture proportion refers to ratio by weight：64 ~ 82 parts of matrix pitch, organise nano-silica
3 ~ 6 parts of SiClx modifying agent, 15 ~ 30 parts of lake asphalt modifying agent.
6. the preparation method of nano-particle and lake asphalt composite modified asphalt according to claim 4, it is characterised in that：
Step（1）Middle sieving refers to that the lake asphalt after crushing crosses 100 ~ 170 mesh sieve.
7. the preparation method of nano-particle and lake asphalt composite modified asphalt according to claim 4, it is characterised in that：
Step（2）Middle inorganic nano silica, which organises, to be referred to 3 ~ 6 parts of nano-silica powder material mixing 60 ~ 120 parts of first
In benzole soln, and add 1.5 ~ 3 parts of silane coupling agent；After silane coupling agent complete hydrolysis, the oil bath heating at 110 ~ 125 DEG C
And 5 ~ 8h of high-speed stirred；Room temperature is subsequently cooled to, is separated by filtration removing toluene；Then 5 ~ 8h is washed to it with acetone, is placed in baking
It is ground up, sieved after drying in case, is made and organises nano-silicon dioxide modified dose.
8. the preparation method of nano-particle and lake asphalt composite modified asphalt according to claim 7, it is characterised in that：
The silane coupling agent is any one in KH550, KH560, KH570, KH580.
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| CN201711462131.1A CN108165034A (en) | 2017-12-28 | 2017-12-28 | A kind of nano-particle and lake asphalt composite modified asphalt and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110156379A (en) * | 2019-04-29 | 2019-08-23 | 长沙理工大学 | For the additive of asphalt, asphalt and preparation method thereof |
| CN111056843A (en) * | 2019-12-26 | 2020-04-24 | 河北联冠智能环保设备股份有限公司 | Graphite crucible for vacuum smelting of intermediate frequency furnace and preparation method thereof |
| CN114316362A (en) * | 2021-12-28 | 2022-04-12 | 哈尔滨工业大学 | Asphalt mixture adhesion improving method based on silane coupling agent hydrolysis powder |
| CN114591583A (en) * | 2022-04-19 | 2022-06-07 | 西南交通大学 | Heat-resistant reversible aging-resistant asphalt wax inhibitor, asphalt and preparation method thereof |
| CN115073060A (en) * | 2022-05-10 | 2022-09-20 | 广东省水利水电第三工程局有限公司 | Hydraulic asphalt concrete, preparation method and application thereof |
| CN115073926A (en) * | 2022-05-10 | 2022-09-20 | 广东省水利水电第三工程局有限公司 | Construction method and application of asphalt concrete |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110156379A (en) * | 2019-04-29 | 2019-08-23 | 长沙理工大学 | For the additive of asphalt, asphalt and preparation method thereof |
| CN110156379B (en) * | 2019-04-29 | 2021-11-05 | 长沙理工大学 | Additive for asphalt mixture, asphalt mixture and preparation method thereof |
| CN111056843A (en) * | 2019-12-26 | 2020-04-24 | 河北联冠智能环保设备股份有限公司 | Graphite crucible for vacuum smelting of intermediate frequency furnace and preparation method thereof |
| CN114316362A (en) * | 2021-12-28 | 2022-04-12 | 哈尔滨工业大学 | Asphalt mixture adhesion improving method based on silane coupling agent hydrolysis powder |
| CN114316362B (en) * | 2021-12-28 | 2023-08-11 | 哈尔滨工业大学 | Asphalt mixture adhesiveness improvement method based on silane coupling agent hydrolysis powder |
| CN114591583A (en) * | 2022-04-19 | 2022-06-07 | 西南交通大学 | Heat-resistant reversible aging-resistant asphalt wax inhibitor, asphalt and preparation method thereof |
| CN114591583B (en) * | 2022-04-19 | 2022-08-16 | 西南交通大学 | Heat-resistant reversible aging-resistant asphalt wax inhibitor, asphalt and preparation method thereof |
| CN115073060A (en) * | 2022-05-10 | 2022-09-20 | 广东省水利水电第三工程局有限公司 | Hydraulic asphalt concrete, preparation method and application thereof |
| CN115073926A (en) * | 2022-05-10 | 2022-09-20 | 广东省水利水电第三工程局有限公司 | Construction method and application of asphalt concrete |
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Application publication date: 20180615 |