CN107400376A - A kind of preparation method of rubber modified asphalt - Google Patents
A kind of preparation method of rubber modified asphalt Download PDFInfo
- Publication number
- CN107400376A CN107400376A CN201710857142.3A CN201710857142A CN107400376A CN 107400376 A CN107400376 A CN 107400376A CN 201710857142 A CN201710857142 A CN 201710857142A CN 107400376 A CN107400376 A CN 107400376A
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- China
- Prior art keywords
- rubber
- modified asphalt
- preparation
- rubber modified
- 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
- C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/20—Recycled plastic
- C08L2207/24—Recycled plastic recycling of old tyres and caoutchouc and addition of caoutchouc particles
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a kind of preparation method of rubber modified asphalt, comprise the following steps：1) DBSA of pitch and straight chain is mixed；2) regeneration of vulcanized rubber particle is added into step 1）In mixture, it is thoroughly mixed；3) by step 2）Mixture heated 1~2 hour under the conditions of 110~240 DEG C, that is, obtain rubber modified asphalt.The method of the present invention is without using high temperature degradation pitch or rubber, it is not necessary to the equipment of high-precision, harmful material will not be also discharged into air；Resulting rubber modified asphalt can be used for paving the way, roofing, coating and other sealing applications.Although any kind of rubber can be used, preferable rubber is to reclaim the rubber powder that automobile tire is obtained, and can use the rubber grain of any suitable size.
Description
Technical field
The invention belongs to asphalt material technical field, and in particular to a kind of preparation method of rubber modified asphalt.
Background technology
With the development of auto industry, the yield of junked tire is increasing.Counted according to world environments health organization, mesh
Preceding whole world junked tire accumulates storage up to 3,000,000,000, and is increased with the speed of about 1,000,000,000 every year.Junked tire is in nature
Under the conditions of be difficult degraded, long-term air storage does not only take up a large amount of soils, and easily grows killing propagation disease and trigger fire
Calamity.The problem of " black pollution " caused by junked tire has been one very severe.On the other hand, junked tire is as a kind of
Renewable resource is also referred to as " black gold mine ".
The recovery process technology of domestic and international junked tire mainly has the side such as the original shape transformation of the way, thermal cracking, tyre rebuilding, burning
Method.Original shape transformation of the way method can directly utilize junked tire, but utilization is limited；Pyrolysis method can prepare fuel oil, carbon black etc.,
But technical sophistication, cost is high, easily causes secondary pollution；Tyre rebuilding method consumes energy less, is pollution-free, but invests big, technical requirements
It is high；Although combustion method is simple, pernicious gas is discharged, secondary pollution is serious.These methods recycle to a certain extent
The junked tire of a part, but the damaged tire limited amount handled, with the fast development of auto industry, are gradually unable to catch up with waste and old
Quantity caused by tire, it is, thus, sought for more effectively, largely utilizing the approach of junked tire.
Junked tire is prepared into rubber powder, then road binding material --- rubber asphalt is present applied to production by rubber powder
A kind of effective reuse method, natural rubber, synthetic rubber and various additives in junked tire, such as sulphur, carbon black, oxygen
The chemical compositions such as SiClx all have certain effect to the performance for improving rubber asphalt and rubber asphalt concrete.At present, rubber drips
Green grass or young crops is widely used in interlayer management, bituminous concrete and crack joint sealing material of road project etc..Spread with rubber powder and asphalt
If road surface it is more more robust than plain asphalt road surface, caused crackle is few, and weatherability is more preferable, meet severe cold weather be not easy to freeze.Glue
Powder is the main altered contents of rubber asphalt, and its preparation method is that junked tire is first cut into bar, then is cut into block, further levigate
For rubber powder.In this process, vulcanize that the internal crosslinking of rubber is very closely knit, and cohesive force is very big, along with the elastic pole of rubber
Good, for many energy expenditures on the elasticity of rubber is overcome, whole process is a pure physical process by mechanical energy,
And the process that an energy consumption is very high.The rubber powder of preparation is added in pitch, rubber powder absorb pitch in light components and it is molten
It is swollen.But the light components in pitch are limited, thus the swelling process of rubber powder is slower, degree very little.Meanwhile rubber asphalt is one
Individual Unstable Systems, at a certain temperature, with the extension of time, different degrees of desulfurization plasticizing occurs for rubber powder, drip rubber
Blue or green-performance indications are unstable.Rubber asphalt is difficult to be finished within its best performance good period again in practice of construction, from
And influence road construction and construction quality.Therefore, the high energy consumption of the rubber powder production process and quality of rubber asphalt is unstable etc. asks
Topic, turn into the principal element for influenceing construction cost and quality.
The content of the invention
In view of this, it is an object of the invention to provide a kind of preparation method of rubber modified asphalt.
To reach above-mentioned purpose, the present invention provides following technical scheme：
A kind of preparation method of rubber modified asphalt, it is characterised in that comprise the following steps；
1）The DBSA of pitch and straight chain is mixed；
2）Regeneration of vulcanized rubber particle is added into step 1）In mixture, it is stirred, speed of agitator is 300~1500 revs/min
Clock, mixing time 5~20 minutes；
3）By step 2）Mixture heated, that is, obtain rubber modified asphalt.
Further, the detergent alkylate sulphur mass ratio of the pitch, regeneration of vulcanized rubber particle and straight chain is 70~98：1
~25：1~5.
Further, the step 3）Heating condition is：Heated 1~2 hour under the conditions of 110~240 DEG C.
Further, the step 3）Heating condition is：Heated 1.5 hours under the conditions of 180 DEG C.
The beneficial effects of the present invention are：
The inventive method is without using high temperature degradation pitch or rubber, it is not necessary to the equipment of high-precision, will not also be released into air
It is placed with harmful material；Resulting rubber modified asphalt can be used for paving the way, roofing, coating and other sealing applications.Although can be with
Using any kind of rubber, but preferable rubber is to reclaim the rubber powder that automobile tire is obtained, and can be using any suitable
The rubber grain of size.
Embodiment
With reference to specific embodiment, the invention will be further described, so that those skilled in the art can be more preferable
Understand the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
Embodiment 1
A kind of preparation method of rubber modified asphalt, comprises the following steps；
1）The DBSA of 400g pitch and 18.39g straight chain is mixed；
2）By 59.77g regeneration of vulcanized rubber particle（80 mesh）Add step 1）In mixture, it is thoroughly mixed, stirring turns
Speed is 300 revs/min, mixing time 20 minutes；
3) by step 2）The mixture of gained heats 1.5 hours under the conditions of 180 DEG C, that is, obtains rubber modified asphalt.
Embodiment 2
A kind of preparation method of rubber modified asphalt, comprises the following steps；
1）The DBSA of 604.7g pitch and 24.18g straight chain is mixed；
2）By 66.05g regeneration of vulcanized rubber particle（20 mesh）Add step 1）In mixture, it is thoroughly mixed, stirring turns
Speed is 1500 revs/min, mixing time 5 minutes；
3）By step 2）The mixture of gained heats 1 hour under the conditions of 200 DEG C, that is, obtains rubber modified asphalt.
Embodiment 3
A kind of preparation method of rubber modified asphalt, comprises the following steps；
1）The DBSA of 604.7g pitch and 25.20g straight chain is mixed；
2）By 68.05g regeneration of vulcanized rubber particle（100 mesh）Add step 1）In mixture, it is thoroughly mixed, stirs
Rotating speed is 1000 revs/min, mixing time 10 minutes；
3）By step 2）The mixture of gained heats 2 hours under the conditions of 110 DEG C, that is, obtains rubber modified asphalt.
Performance test:Using JTGE20-2011《Road engineering pitch and Asphalt Mixture Experiment code》In T0604-
2011st, needle penetration, ductility and the softening of T0605-2011, T0606-2011 method difference rubber asphalt of testing example 1~3
Point.
Rubber asphalt sample properties test result made from the embodiment 1~3 of table 1
As can be seen that obtained waste tire rubber pitch substantially reduces relative to matrix pitch needle penetration, softening point carries table 1
Height, low temperature (5 DEG C) extensibility significantly improve, and rubber asphalt has more preferable stability and low-temperature cracking-resistance than matrix pitch, deposits
Storage stability significantly improves.
Embodiment described above is only to absolutely prove preferred embodiment that is of the invention and being lifted, protection model of the invention
Enclose not limited to this.The equivalent substitute or conversion that those skilled in the art are made on the basis of the present invention, in the present invention
Protection domain within.Protection scope of the present invention is defined by claims.
Claims (4)
1. a kind of preparation method of rubber modified asphalt, it is characterised in that comprise the following steps；
1）The DBSA of pitch and straight chain is mixed；
2）Regeneration of vulcanized rubber particle is added into step 1）In mixture, it is stirred, speed of agitator is 300~1500 revs/min
Clock, mixing time 5~20 minutes；
3）By step 2）Mixture heated, that is, obtain rubber modified asphalt.
2. the preparation method of rubber modified asphalt according to claim 1, it is characterised in that the pitch, regenerative vulcanized
The detergent alkylate sulphur mass ratio of rubber grain and straight chain is 70~98：1~25：1~5.
3. the preparation method of rubber modified asphalt according to claim 1, it is characterised in that the step 3）Middle fire-bar
Part is：Heated 1~2 hour under the conditions of 110~240 DEG C.
4. the preparation method of rubber modified asphalt according to claim 3, it is characterised in that the step 3）Middle fire-bar
Part is：Heated 1.5 hours under the conditions of 180 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710857142.3A CN107400376A (en) | 2017-09-21 | 2017-09-21 | A kind of preparation method of rubber modified asphalt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710857142.3A CN107400376A (en) | 2017-09-21 | 2017-09-21 | A kind of preparation method of rubber modified asphalt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107400376A true CN107400376A (en) | 2017-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710857142.3A Pending CN107400376A (en) | 2017-09-21 | 2017-09-21 | A kind of preparation method of rubber modified asphalt |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106084829A (en) * | 2016-07-11 | 2016-11-09 | 广东石油化工学院 | A kind of warm mix waste rubber powder modified asphalt compound and preparation method thereof |
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2017
- 2017-09-21 CN CN201710857142.3A patent/CN107400376A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106084829A (en) * | 2016-07-11 | 2016-11-09 | 广东石油化工学院 | A kind of warm mix waste rubber powder modified asphalt compound and preparation method thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171128 |