CN104004367B - The preparation method of modified pitch - Google Patents
The preparation method of modified pitch Download PDFInfo
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- CN104004367B CN104004367B CN201410173284.4A CN201410173284A CN104004367B CN 104004367 B CN104004367 B CN 104004367B CN 201410173284 A CN201410173284 A CN 201410173284A CN 104004367 B CN104004367 B CN 104004367B
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- waste
- gypsum
- rubber particle
- crystal whisker
- old rubber
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Abstract
The invention discloses the preparation method of a kind of modified pitch.It is granule that waste old is pulverized, and after being scattered in plasticizer activation, mixes composition modifying agent with crystal whisker of gypsum.The input of crystal whisker of gypsum decreases the consumption of matrix pitch, reduces engineering cost.The addition of waste and old rubber particle then avoids the poor high temperature stability individually adding crystal whisker of gypsum and cause, the problem that low-temperature ductility is little, and improves ageing resistace.Modified Colophonium finished product can reach national regulation requirement, can be used for bituminous highway pavement construction, easy and simple to handle, suitable large-scale promotion.
Description
Technical field
The invention belongs to chemical field, relate to the preparation method of a kind of modified pitch.
Technical background
Along with the fast development of highway in China carrier, oil and asphalt price rise steadily, bituminous coat project is thrown
Money is greatly increased.It addition, the vehicle in highway transportation maximizes, heavily loaded, overloading is increasingly severe, highroad is at high temperature
Stability, low-temperature cracking-resistance, ageing resistance and life requirement are more and more higher.Therefore better performances cheap, modified is found
Outer-penetrating agent particularly important.On the other hand.Due to the fast development of auto industry, the damaged tire that China produces every year increases the most rapidly
Long, and, damaged tire is buried, burn, stack and be helpless to effect a radical cure " black pollution ".Therefore the reasonable of rubber sources is carried out
Utilize extremely urgent.Having the most very early and rubber is used for modified pitch, practice finds, rubber powder modified asphalt not only performance is relatively
Good, also there is noise reduction, the advantage of increasing bullet, low price, achieve again the utilization of resources.Gypsum Fibrosum is raw material more cheap and easy to get,
With rubber with the use of synergism can occur, optimize asphalt performance, and reduce engineering cost further.
Summary of the invention
It is an object of the invention to provide the preparation method of a kind of modified pitch.
The present invention is realized by following measure:
The preparation method of modified pitch, it is characterised in that:
Comprise the steps:
A. the size-reduced machine of waste and old rubber particle is pulverized as granule；
B. waste and old rubber particle adds plasticizer, activates under ultrasonication;
C. the rubber grain after activation and crystal whisker of gypsum are mixed to get composite asphalt modifier;
D. in agitator, add bitumen A H-70, add composite asphalt modifier after being warmed up to 120-140 degree Celsius, stir
Modified pitch is obtained after mixing uniformly.
Described method, it is characterised in that the size-reduced machine of step A waste rubber tire is pulverized as 60-80 mesh size.
Described method, it is characterised in that step B plasticizer is trioctyl phosphate, di-n-octyl sebacate, phthalic acid
One in dibutyl ester, dioctyl phthalate.
Described method, it is characterised in that waste and old rubber particle and plasticizer mass ratio are 1:0.5-2, ultrasonic activation temperature
For room temperature, the time is 14-16 min.
Described method, it is characterised in that step C waste and old rubber particle and crystal whisker of gypsum mass ratio are 1:3.5-4.
Described method, it is characterised in that D step Colophonium and modifying agent mass ratio are 3:0.5-1, and mixing temperature is 120-
135 oC。
Described method, it is characterised in that: the composite asphalt modifier obtained and Colophonium and complex additive according to
The ratio mixing of 0.5-1:3:0.1-0.2, prepares modified pitch；
Described complex additive is prepared by the raw material of following weight parts: polyoxyethylene lauryl ether 0.1-0.2, tristearin
Acid aluminum 0.4-0.5, acrylic acid methyl ester. 0.2-0.4, carbamide 0.1-0.2, epoxy soybean oil 0.2-0.4, Merlon 0.2-0.5,
Silane coupler DL171 1-2, antioxidant 1135 0.1-0.2, bentonite 5-10；
The preparation method of complex additive is: bentonite and carbamide are joined in the deionized water of 55 DEG C-65 DEG C, stirring
Uniformly, add polyoxyethylene lauryl ether, acrylic acid methyl ester., stir 20-30 minute, add remaining raw material, stir 10-20
Minute, after drying, to obtain final product.
Beneficial effects of the present invention:
1. the input of asphalt modifier crystal whisker of gypsum decreases the consumption of matrix pitch, reduces engineering cost.
2. to avoid poor high temperature stability, the low-temperature ductility individually adding crystal whisker of gypsum and cause little in the addition of waste old
Problem, and improve ageing resistace.
The most modified Colophonium finished product can reach national regulation requirement, can be used for bituminous highway pavement construction, easy and simple to handle,
Suitable large-scale promotion.
Detailed description of the invention
In order to be better understood from the present invention, illustrated by following instance:
Embodiment 1,
Being pulverized by size-reduced for waste and old rubber particle machine is 60 mesh sizes, mixes with 1:1 mass ratio with dibutyl phthalate
Close, swelling 24 h after room temperature ultrasonic activation 15 min, complete swelling after, add crystal whisker of gypsum, mix homogeneously i.e. obtains composite asphalt
Modifying agent.Being added by composite asphalt modifier in melted matrix pitch AH-70, maintaining temperature is 135oC mix homogeneously, i.e.
Obtain modified pitch.Rubber grain, crystal whisker of gypsum and matrix pitch quality when performance of modified bitumen testing result are according to table 1 institute
Show.
Table 1 rubber grain and crystal whisker of gypsum composite modifier form and performance of modified bitumen
Note: specification uses JTG F40-2004 " standard specification for construction and acceptance of highway asphalt pavement "
As seen from Table 1, crystal whisker of gypsum modified pitch needle penetration and 15 it is used aloneoC ductility does not reaches national regulation and wants
Ask, and synergism occurs after adding a certain amount of rubber grain, make to change after energy in the case of reducing matrix pitch consumption
The performance of property Colophonium reaches national regulation requirement.Crystal whisker of gypsum is the most cheap and easy to get, reduces engineering cost.
Embodiment 2,
The preparation method of modified pitch,
Comprise the steps:
A. the granule for 60-80 mesh size pulverized by the size-reduced machine of waste and old rubber particle；
B. waste and old rubber particle adds trioctyl phosphate, activates, waste and old rubber particle and tricresyl phosphate under ultrasonication
Monooctyl ester mass ratio is 1:1, and ultrasonic activation temperature is room temperature, and the time is 15 min;
C. the rubber grain after activation and crystal whisker of gypsum are mixed to get composite asphalt modifier, waste and old rubber particle and Gypsum Fibrosum
Whisker mass ratio is 1:3.5;
D. the composite asphalt modifier obtained mixes according to the ratio of 1:3:0.2 with Colophonium and complex additive, heats up
After 125 DEG C, stir 15 minutes, prepare modified pitch.
Described complex additive is prepared by the raw material of following weight parts: polyoxyethylene lauryl ether 0.2, aluminium stearate
0.5, acrylic acid methyl ester. 0.2, carbamide 0.2, epoxy soybean oil 0.4, Merlon 0.2, silane coupler DL171 2, antioxidant
1135 0.2, bentonite 10；
The preparation method of complex additive is: bentonite and carbamide is joined in the deionized water of 65 DEG C, stirs,
Add polyoxyethylene lauryl ether, acrylic acid methyl ester., stir 30 minutes, add remaining raw material, stir 20 minutes, dry
After, to obtain final product.
The softening point of gained modified pitch is 68.5 DEG C, 15oC ductility 110cm.
Claims (1)
1. the preparation method of modified pitch, it is characterised in that:
Comprise the steps:
A. the size-reduced machine of waste and old rubber particle is pulverized as granule；
B. waste and old rubber particle adds plasticizer, activates under ultrasonication；
C. the rubber grain after activation and crystal whisker of gypsum are mixed to get composite asphalt modifier；
D. the composite asphalt modifier obtained is mixed according to the ratio of 0.5-1:3:0.1-0.2 with Colophonium and complex additive
Even, after being warmed up to 125 DEG C, stir 15 minutes, prepare modified pitch；
The described A size-reduced machine of step waste and old rubber particle is pulverized as 60-80 mesh size；
Described step B plasticizer is trioctyl phosphate, di-n-octyl sebacate, dibutyl phthalate, phthalic acid two
One in monooctyl ester；
Described step B waste and old rubber particle and plasticizer mass ratio are 1:0.5-2, and ultrasonic activation temperature is room temperature, and the time is
14-16 min；
Described C step waste and old rubber particle and crystal whisker of gypsum mass ratio are 1:3.5-4；
Described complex additive is prepared by the raw material of following weight parts: polyoxyethylene lauryl ether 0.1-0.2, aluminium stearate
0.4-0.5, acrylic acid methyl ester. 0.2-0.4, carbamide 0.1-0.2, epoxy soybean oil 0.2-0.4, Merlon 0.2-0.5, silane
Coupling agent DL171 1-2, antioxidant 1135 0.1-0.2, bentonite 5-10；The preparation method of complex additive is: by swelling
Soil and carbamide join in the deionized water of 55 DEG C-65 DEG C, stir, add polyoxyethylene lauryl ether, acrylic acid
Methyl ester, stirs 20-30 minute, adds remaining raw material, stirs 10-20 minute, after drying, to obtain final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410173284.4A CN104004367B (en) | 2014-04-28 | 2014-04-28 | The preparation method of modified pitch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410173284.4A CN104004367B (en) | 2014-04-28 | 2014-04-28 | The preparation method of modified pitch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104004367A CN104004367A (en) | 2014-08-27 |
| CN104004367B true CN104004367B (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410173284.4A Expired - Fee Related CN104004367B (en) | 2014-04-28 | 2014-04-28 | The preparation method of modified pitch |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104893058A (en) * | 2015-06-11 | 2015-09-09 | 江苏金阳新材料科技有限公司 | Environmental protection asphalt modifier and preparation method thereof |
| CN106084820A (en) * | 2016-06-20 | 2016-11-09 | 安徽金丰新型建材有限公司 | A kind of high performance modified bitumen |
| CN108504121A (en) * | 2018-04-04 | 2018-09-07 | 江蔓青 | A kind of preparation method of waste and old rubber modified asphalt |
| CN110982290B (en) * | 2019-12-20 | 2021-08-24 | 河南交通职业技术学院 | Aged asphalt regenerant and preparation method thereof |
| CN111334056A (en) * | 2020-03-20 | 2020-06-26 | 南京诚赢集约建材科技有限公司 | Modified odorless asphalt mixture and preparation method thereof |
| CN114906868B (en) * | 2022-06-02 | 2023-07-21 | 湖北工业大学 | Phosphogypsum efficient purification method and application |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57119953A (en) * | 1980-11-27 | 1982-07-26 | Idemitsu Kosan Co Ltd | Bituminous vibration-proof sheet and preparation of same |
| CN1257941C (en) * | 2003-09-17 | 2006-05-31 | 西北师范大学 | Composite of modified road asphalt by microwave radiating old rubber powder and its preparation process |
| CN103232708B (en) * | 2013-01-29 | 2015-01-07 | 四川省达州质量技术监督检验测试中心 | Novel asphalt composite modifier, modified asphalt and preparation method of the modified asphalt |
| CN103030985B (en) * | 2013-01-29 | 2014-12-10 | 四川省达州质量技术监督检验测试中心 | Sulfur and gypsum whisker composite asphalt modifier, modified asphalt and preparation method thereof |
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| CN104004367A (en) | 2014-08-27 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20160616 Address after: 243000 Anhui city of Ma'anshan Province Yu Shan Economic Development Zone Applicant after: ANHUI GVG NEW MATERIAL Co.,Ltd. Address before: 243100 Anhui city of Ma'anshan province Dangtu County Chengqiao the Bund Red Sun Life Science Industrial Park Applicant before: ANHUI HONGTAIYANG NEW MATERIAL CO.,LTD. |
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Granted publication date: 20160817 |