CN106700573B - A kind of preparation method and its packing method of the polymer modified asphalt that cools down - Google Patents
A kind of preparation method and its packing method of the polymer modified asphalt that cools down Download PDFInfo
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- CN106700573B CN106700573B CN201611044282.0A CN201611044282A CN106700573B CN 106700573 B CN106700573 B CN 106700573B CN 201611044282 A CN201611044282 A CN 201611044282A CN 106700573 B CN106700573 B CN 106700573B
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- modified asphalt
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
- B65B1/04—Methods of, or means for, filling the material into the containers or receptacles
- B65B1/10—Methods of, or means for, filling the material into the containers or receptacles by rotary feeders
- B65B1/12—Methods of, or means for, filling the material into the containers or receptacles by rotary feeders of screw type
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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
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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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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- 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
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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)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Working-Up Tar And Pitch (AREA)
Abstract
The invention discloses the preparation methods and its packing method of a kind of polymer modified asphalt that cools down.Preparation method is to be ground that high concentration polymer modified asphalt matrix is made first with colloid mill, then obtains cooling polymer modified asphalt with the cooling dilution of cold pitch again after multistep hybrid reaction.The cooling polymer modified asphalt can carry out flexible package by helical feed.The present invention has many advantages, such as energy conservation and environmental protection, packaging safety and not frangible pouch, provides convenience to high-performance asphalt pavement construction from far-off regions is solved.
Description
Technical field
The present invention relates to modified pitch production fields, more particularly, to a kind of preparation method of polymer modified asphalt that cools down
And its packing method.
Background technique
In polymer used in modified pitch, it is most common for styrene-butadiene-styrene (SBS) and
Butadiene-styrene rubber (SBR).SBS modified pitch high temperature performance is taken into account, and still, SBS modified pitch is in storage and transportation process at present
Need high temperature, when transport needs special pitch special-purpose vehicle, and when use must be heated into liquid flowing state, is always maintained at heating
State waste of energy.Especially when China western part length and breadth of land area, transport and heating use, waste of energy problem is very prominent.
The transportation and packing mode of modified pitch mainly has insulation tanker, metal bucket and flexible package polybag.Insulation tanker transport
Process energy consumption is big, high to regional transportation cost of having inconvenient traffic, and is easy to make ageing of asphalt in high temperature transportational process.Metal bucket is packaged into
This height takes up space more, needs special dumping equipment, and makes asphaltogenic waste.Flexible package polybag generally uses poly- third
Alkene or polythene material, heat resisting temperature is low, and modified pitch processing temperature is up to 190 DEG C, therefore is easy to break in pouring process
Bag.General to reduce broken bag using the method for reducing temperature, temperature drops to 120-150 DEG C, this not only time-consuming but also waste of energy and
Time, and still it is easy broken bag.In addition, modified pitch viscosity under 120-150 DEG C of canned temperature range is larger, canned speed is caused
Slowly, the disadvantages of the shortcomings that time-consuming, the modified pitch packaging of unsuitable high temperature, Chinese patent CN 101746547 proposes use
The method of the compound preparation heatproof film packing material of multiple material improves the packability energy of pitch.For general soft packaging bag
Then there is cracky in the case where being only used for canned ordinary road pitch or building asphalt, flexible package, CN 202765308 is proposed
A kind of automation Soft Roll wiring of pitch.
For the canned efficiency, energy saving for improving modified pitch, in conjunction with modified pitch preparation process, parent multistep is proposed
Reacting processing is mixed with the cooling of cold bitumen dilution, and then screw rod quickly squeezes out canned method again, is had energy conservation, is reduced environment
The advantages that pollution.
Summary of the invention
It is main in order to solve the above-mentioned technical problems, the present invention provides a kind of preparation method of polymer modified asphalt that cools down
If high concentration polymer modified asphalt matrix is made first, then gathered again with cold bitumen dilution after multistep hybrid reaction
The process of polymer modified pitch, by the polymer modified asphalt through Screw Extrusion can fast package, and have high temperature performance it is good,
Stable structure, preparation method be simple, at low cost, transport and it is easy to use the advantages that.
The technical solution adopted by the present invention are as follows:
A kind of preparation method for the polymer modified asphalt that cools down, comprises the following steps:
Step (1) adds a polymer in asphalt that prepare polymer concentration be 6-16%'s with width gap colloid mill
High concentration polymer modified asphalt matrix.Polymer content is 4% or so in general polymerization object modified pitch, to meet cold pitch
Higher concentration is still kept when addition, therefore the present inventor's selection prepares high concentration polymer modified pitch mother using parent method
Body.By test of many times, final choice controls content of the polymer in pitch and is greater than 6%, preferential 8-16%, because if
Content is too high will be too low so that viscosity is too big, cause efficiency too low.
Reaction stabilizer substep is added to high concentration polymer modified asphalt matrix obtained by step (1) by step (2)
Middle progress multistep hybrid reaction processing.Why the processing is carried out, is because such as SBS, SBR polymer modified asphalt concentration are high
React violent gelation of Shi Jiyi forms g., jelly-like substance, therefore to prevent gelation, inventor's discovery can be by stable reaction
Agent substep is added in high concentration polymer modified asphalt matrix the crosslinking that reacts with pitch, grafting to be improved, and reaches
It stabilizes, prevents gelation；Therefore it is modified preferably, reactant substep is added to high concentration polymer by step (2)
In pitch precursor, and the mass ratio for controlling the reactant and polymer modified asphalt parent is 1:100-1:300, because of ratio
Too high easy gelation, too low reaction degree are insufficient, and the mode that specific substep is added is that 1/2 reaction stabilizer is first added to high
It is reacted in concentration polymer modified asphalt matrix 1 hour, then added 1/4,1/4 stable reaction at interval of 1 hour respectively
Thus agent obtains holding runny high concentration polymer modified asphalt matrix.More preferably, the reactant is controlled to change with polymer
Property pitch precursor mass ratio be 1:200, the effect at this moment reacted is best.
Step (3) will be pumped into cold pitch kneading dress by step (2) processed high concentration polymer modified asphalt matrix
Set, the weight ratio for controlling the high concentration polymer modified asphalt matrix and cold pitch is 1:(1-3), change high concentration polymer
Property pitch precursor and cold pitch in kneader while dilution while cool down, obtain can fast package cooling polymer modified asphalt.
Cold pitch reduces the temperature of high concentration polymer modified asphalt matrix quickly, lower than tradition, reaches 80-120 DEG C, saves simultaneously
The energy.More preferably, the weight ratio for controlling the high concentration polymer modified asphalt matrix and cold pitch is 1:(1-1.5), this
When cooling polymer modified asphalt obtained performance etc. it is more stable more preferable.
Preferably, polymer described in the step (1) is SBS or SBR.
Preferably, reaction stabilizer described in the step (2) is the vulcanizing system based on sulphur, including promotor
TT, DM etc., if because the too high easy gelation of stable reaction agent content, too low reaction degree are again insufficient.
Preferably, cold pitch described in the step (3) is matrix asphalt of the temperature at 80-120 DEG C, matrix
The grade of pitch is 50-No. 110.What the label of pitch embodied is the needle penetration of pitch, heavy traffic paving asphalt be divided into 50#, 70#, 90#,
100#,110#.The selection of asphalt label generally comprehensively considers road quality classification, weather conditions, transportation condition, road surface types etc.,
The softening point of 50# pitch and the softening point of 70-110# pitch are not much different, but its ductility is much smaller than under the conditions of identical temperature
70-110# pitch, therefore preferably 70-110# heavy traffic paving asphalt, are added in master batch of bitumen and mix, make the fast prompt drop of the temperature of modified pitch
It is low.
The invention also discloses the packing methods of the cooling polymer modified asphalt of above-mentioned preparation, i.e., polymerize the cooling
Object modified pitch be injected into flexible package by the conveying of method that Screw Extrusion conveys packed to get to can fast package,
The not bagged asphalt material of frangible pouch.Meanwhile screw rod is canned also improves canned speed.
Preferably, the cooling polymer modified asphalt flexible package temperature range is 80-120 DEG C, mode of movement is spiral shell
Bar squeezes out injection.
It can be used for road from far-off regions using modified asphalt mixture made from cooling polymer modified asphalt obtained above
Road maintenance and high grade pavement construction field.
Technical effect of the invention:
Compared with prior art, the present invention the physical properties of this method cooling polymer modified asphalt obtained meet
Asphalt for road performance indicator as defined in China is suitble to large-scale production application, and economy and environmental benefit are huge, especially
It has the advantages that
(1), the side because innovatively having used the lower cold pitch of temperature to cool down high concentration polymer modified pitch masterbatch
Method, therefore traditional modified pitch mode canned again after Temperature fall has been abandoned, preparation process energy conservation；
(2) present invention makes pouring into for polymer modified asphalt because of the mode for using kneader mix and screw compulsory to convey
Temperature is reduced to 120 DEG C hereinafter, because canned temperature is low, and broken bag is few, so that the adaptability of packaging bag greatly improves, it is applicable various
Soft packaging bag has been greatly reduced broken bag rate；Meanwhile canned speed is also improved using screw rod is canned；
(3), polymer modified asphalt prepared by the present invention, preparation method are simply easily realized, additional modified drip is not needed
Green equipment and being not required to specially stores the equipment such as asphalt tank and conveyance conduit, transports easy to use, it is not necessary to worry to drip in work progress
Green storage problem；
(4), modified pitch reduces the repeated multiple times heating of pitch, aging in the present invention, also reduces energy consumption, significantly
Reduce secondary pollution, is worthy to be popularized.
Specific embodiment
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive
Feature and/or step other than, can combine in any way.
Any feature disclosed in this specification unless specifically stated can be equivalent or with similar purpose by other
Alternative features are replaced.That is, unless specifically stated, each feature is an example in a series of equivalent or similar characteristics
?.
The present invention adopts in the preparation process of high concentration polymer modified asphalt matrix and in cold bitumen dilution temperature-fall period
The method being blended with kneader, wherein kneading mixing equipment can be the equipment being made of kneading chamber and a pair of of Z-type rotor, tool
There is heating and temperature controlling device, its underpart has screw extruder output device.
The characteristics of present invention is by preparation and packaging by embodiment and in conjunction with table to illustrate the polymer modified asphalt
And advantage.
Embodiment 1 to 4:
Embodiment 1
In terms of mass fraction, by 9 tons No. 70 pitches of friendship again, 1 ton of SBS is obtained after agitated mixing by colloid mill
Then the high concentration polymer modified asphalt matrix that concentration is 10% is added 25 kilograms of stabilizers and adds after 1h is developed in stirring
12.5 kilograms of stabilizer after reaction stirring 1h, adds 12.5 kilograms of stabilizer, the high concentration polymer that obtains that treated
Modified asphalt matrix, the stabilizer is the vulcanizing system, including promotor TT, DM etc. based on sulphur, then by treated
500 kilograms of high concentration polymer modified asphalt matrixes are pumped into the kneader of 2000L, then are pumped into 500 kilograms of cold pitch, are blended
The polymer modified asphalt of cooling is prepared, single screw rod squeezes out packaging, and performance is shown in Table 1.
Embodiment 2
In terms of mass fraction, by 9 tons No. 70 pitches of friendship again, 1 ton of SBS is obtained after agitated mixing by colloid mill
10% high concentration polymer modified pitch, is then added 50 kilograms of stabilizers, and after reaction stirring 2h, it is highly concentrated to obtain that treated
Polymer modified asphalt parent is spent, the stabilizer is the vulcanizing system based on sulphur, including promotor TT, DM, then will be located
500 kilograms of high concentration polymer modified asphalt matrixes after reason are pumped into the kneader of 2000L, then are pumped into 500 kilograms of cold drip
The polymer modified asphalt of preparation cooling is blended in blueness, and single screw rod squeezes out packaging, and performance is shown in Table 1.
Embodiment 3
In terms of mass fraction, by 9.5 tons No. 70 pitches of friendship again, 0.5 ton of SBS passes through colloid mill after agitated mixing
5% polymer modified asphalt is obtained, 50 kilograms of stabilizers are then added, performance is shown in Table 1 after reaction stirring 2h.
Embodiment 4
In terms of mass fraction, by 9 tons No. 70 pitches of friendship again, 1 ton of SBS is obtained after agitated mixing by colloid mill
10% parent modified pitch, is then added 50 kilograms of stabilizers, after reaction stirring 2h, the high concentration polymer that obtains that treated
Modified asphalt matrix, the stabilizer are the vulcanizing system based on sulphur, including promotor TT, DM, then will treated 500
Kilogram high concentration polymer modified asphalt matrix is pumped into the kneader of 2000L, then is pumped into 750 kilograms of cold pitch, and system is blended
The polymer modified asphalt for temperature of making preparation for dropping, single screw rod squeeze out packaging, and performance is shown in Table 1.
Table 1: the performance for the polymer modified asphalt that embodiment 1-4 obtains
By embodiment as it can be seen that embodiment 1 is smaller than the kinematic viscosity of 2 modified pitch of embodiment, gelation is greatly reduced
Trend.The parent method of embodiment 1,2 cool down canned modified pitch performance is all close or performance better than traditional modified pitch, see
Embodiment 3.
Claims (6)
1. a kind of preparation method for the polymer modified asphalt that cools down, which is characterized in that comprise the following steps:
Step (1) adds a polymer to and prepares high concentration that polymer concentration is 6-16% with colloid mill in asphalt and polymerize
Object modified asphalt matrix；The polymer is SBS or SBR；
Step (2), by reaction stabilizer substep be added in high concentration polymer modified asphalt matrix obtained by step (1) into
The processing of row multistep hybrid reaction；
Step (3) will be pumped into cold pitch kneader by step (2) processed high concentration polymer modified asphalt matrix,
The weight ratio for controlling high concentration polymer modified asphalt matrix and cold pitch is 1:(1-3), make high concentration polymer modified pitch
Parent and cold pitch cool down in kneader in dilution, thus obtain can fast package cooling polymer modified asphalt；Institute
Stating cold pitch is matrix asphalt of the temperature at 80-120 DEG C, and the grade of matrix pitch is 50-No. 110.
2. the preparation method of cooling polymer modified asphalt according to claim 1, which is characterized in that the step (2)
Described in the mass ratio of reaction stabilizer and high concentration polymer modified asphalt matrix be 1:100-1:300, specific substep is added
Mode be that 1/2 reaction stabilizer is first added react 1 hour into high concentration polymer modified asphalt matrix, then respectively often
Interval adds 1/4,1/4 reaction stabilizer for 1 hour, thus obtains holding runny high concentration polymer modified pitch mother
Body.
3. the preparation method of cooling polymer modified asphalt according to claim 1, which is characterized in that the step (2)
Middle reaction stabilizer is the vulcanizing system based on sulphur, including promotor TT and DM.
4. a kind of packet for the modified pitch that the preparation method for cooling polymer modified asphalt described in claim 1 is prepared
Dress method, which is characterized in that the cooling polymer modified asphalt is conveyed by method that Screw Extrusion convey be injected into it is soft
Packed in packaging, obtain can fast package, not frangible pouch bagged asphalt material.
5. the packaging side for the modified pitch that the preparation method of cooling polymer modified asphalt according to claim 4 is prepared
Method, which is characterized in that the cooling polymer modified asphalt flexible package temperature range is 80-120 DEG C.
6. a kind of modified pitch that the preparation method of cooling polymer modified asphalt according to claim 1 is prepared makes
With method, which is characterized in that modified asphalt mixture made from the cooling polymer modified asphalt is used for road from far-off regions
Road maintenance and high grade pavement construction field.
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| CN201611044282.0A CN106700573B (en) | 2016-11-22 | 2016-11-22 | A kind of preparation method and its packing method of the polymer modified asphalt that cools down |
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| CN201611044282.0A CN106700573B (en) | 2016-11-22 | 2016-11-22 | A kind of preparation method and its packing method of the polymer modified asphalt that cools down |
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| CN106700573B true CN106700573B (en) | 2019-03-26 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1252826A (en) * | 1997-02-18 | 2000-05-10 | 波利法尔特有限公司 | Polymer stabilized bitumen granulate |
| CN1528823A (en) * | 2003-09-26 | 2004-09-15 | 沈阳三鑫公路工程有限公司 | Preparation method of waste rubber powder modified asphalt |
| CN1733832A (en) * | 2004-08-13 | 2006-02-15 | 中国石化镇海炼油化工股份有限公司 | Storage type SBS modified asphalt and its production method |
| CN1923902A (en) * | 2006-08-10 | 2007-03-07 | 大连海事大学 | Preparation method of rubber powder modified bitumen adapted for industrial production |
| CN105086477A (en) * | 2015-08-07 | 2015-11-25 | 天津天合建岭路桥工程科技有限公司 | SBS modified asphalt and production method thereof |
-
2016
- 2016-11-22 CN CN201611044282.0A patent/CN106700573B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1252826A (en) * | 1997-02-18 | 2000-05-10 | 波利法尔特有限公司 | Polymer stabilized bitumen granulate |
| CN1528823A (en) * | 2003-09-26 | 2004-09-15 | 沈阳三鑫公路工程有限公司 | Preparation method of waste rubber powder modified asphalt |
| CN1733832A (en) * | 2004-08-13 | 2006-02-15 | 中国石化镇海炼油化工股份有限公司 | Storage type SBS modified asphalt and its production method |
| CN1923902A (en) * | 2006-08-10 | 2007-03-07 | 大连海事大学 | Preparation method of rubber powder modified bitumen adapted for industrial production |
| CN105086477A (en) * | 2015-08-07 | 2015-11-25 | 天津天合建岭路桥工程科技有限公司 | SBS modified asphalt and production method thereof |
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| CN106700573A (en) | 2017-05-24 |
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