CN107828219A - A kind of high-low temperature resistant modified pitch and its preparation technology for adding propane diols - Google Patents
A kind of high-low temperature resistant modified pitch and its preparation technology for adding propane diols Download PDFInfo
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- CN107828219A CN107828219A CN201711049099.4A CN201711049099A CN107828219A CN 107828219 A CN107828219 A CN 107828219A CN 201711049099 A CN201711049099 A CN 201711049099A CN 107828219 A CN107828219 A CN 107828219A
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- pitch
- propane diols
- low temperature
- temperature resistant
- resistant modified
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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
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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- 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 high-low temperature resistant modified pitch and its preparation technology for adding propane diols.Its technique is first to sequentially add appropriate calcium stearate, vulcanizing agent, butadiene-styrene rubber, silica modified dose, glycerine water solution and propane diols are added after being uniformly dispersed at a high speed, cooling, later stage development can obtain a kind of high-low temperature resistant modified pitch asphalt heating stirring.The pitch high and low temperature resistance of preparation is good, and storage time is grown, and facilitates building site to use.
Description
Technical field
The present invention relates to a kind of road asphalt, more particularly to a kind of high and low temperature resistance pitch and its system for adding modifying agent
Preparation Method, belong to pitch manufacture field.
Background technology
Asphalt is a kind of product of crude oil processing, be at normal temperatures black or dark brown sticky liquid,
Semi-solid or solid, its composition is extremely complex, generally it can be thought that it includes four kinds of asphalitine, colloid, fragrance point, saturation point groups
Point, property and composition change with the difference of crude oil origin and production method, and during modified pitch is produced, this in pitch is several
Stable dispersion of the ratio of kind component for polymer in pitch is extremely important, and particularly fragrance point can effective swollen-state polymerization
Thing, the interfacial tension between polymer beads and pitch is reduced, so fragrant when increasing polymer volume, while in increase system
Perfume (or spice) grades the contents of low molecular weight compositions, extends swelling time, and adds appropriate stabilizer with cross-linked polymer, just can ensure that poly-
Compound is dispersed in pitch.With the development of highway communication cause, bituminous composition is widely used in paving roadways.
With the requirement to pavement of road increasingly improve, it is necessary to have excellent intensity, resistance to mobility, abrasion performance pitch
Road, it is therefore necessary to prepare the bituminous composition of the high mechanical strengths such as the higher, modulus of elasticity of softening point, it is necessary to use various copolymerization
Agent modifying agent is improved.
But because the compatibility of these modifying agent and pitch is very poor, the problem of following is produced, (1) is in order to prepare homogeneous drip
The mixture of blue or green composition, pitch and modifying agent must stir long time in the case of high-temperature heating.Therefore produce and change
Property agent and the denaturation of pitch, the bituminous composition of generation have the shortcomings that following, i.e., can not provide the dynamic stability specified and
Toughness, and the road surface laid with the bituminous composition is subject to severe abrasion.In addition, the pitch is denatured, it is just destroyed
The dispersiveness of contained asphalitine (n-pentane insoluble substance) and the uniformity of pitch in pitch.Then asphalt and aggregate are just generated
Adhesive property reduce the problem of.(2) during storage is heated, the modifying agent being dispersed in pitch is assembled,
In being so that modifying agent and separated from bitumen.For example, the proportion (about 0.93/15 of the SBR styrene butadiene rubberses of one of modifying agent
DEG C) lower (than weighing about 1.04/15 DEG C) than pitch.Therefore, occur during bituminous composition is stored in the storage tank in heating
When modifying agent is with separated from bitumen, modifying agent is with regard to uneven distribution.Therefore, in the top of bituminous composition, modifying agent (benzene
Ethylene-diene rubber) become a lot, and in its underpart, modifying agent becomes seldom.Then, the bituminous composition just includes one
Divide the material for not manifesting the various performances specified.When the very low bituminous composition of the content of modifying agent is used to pave the way, it is paved into
The resistance to depression performance and abrasion resistance properties on road surface are all very poor.
In terms of patent：CN03150929.0 and CN200610165015.9 is the modified drip by the use of SBR as modifying agent
Blue or green technology of preparing, although all having obvious modified effect, high polymer material is expensive, and tight to production equipment requirement
Lattice, production technology is more complicated, and comprehensive process cost is higher.CN201010522786.5 is that a kind of wide area modified pitch prepares skill
Art, using powdered butadiene-styrene rubber as the first modifying agent, using Tissuemat E as the second modifying agent, by the high-melting-point of Tissuemat E
With the characteristic of fusing point above fast melt, modified pitch is possessed the performance of certain Tissuemat E, that is, improve the soft of pitch
Change point, using the low temperature deep drawing quality energy of butadiene-styrene rubber, increase the low temperature ductility of modified pitch, belong to physical modification category,
When the compatibility of benzene rubber and pitch has problem, i.e. thermmal storage, lamination occurs if stopping stirring.
It is above-mentioned in order to solve the problems, such as, i.e. modifying agent and the problem of separated from bitumen at high temperature, Japanese patent application publication No. 6-
329919 propose a kind of method, and this method includes being used together a kind of salt of ester or the ester with pitch, the ester be by by
Prepared by the compound reaction of copolymer and hydroxyl prepared by ethylene unsaturated carboxylic acid and aromatic vinyl compound, Japan is specially
Sharp publication number 7-157665 is disclosed using containing the asphalt modifier with acidic group and the oily molten polymer of base.Using this
A little methods cause the property of bituminous composition somewhat to improve to some extent.But when allowing situation of the bituminous composition in no stirring
Lower when standing very long a period of time, this area needs further to improve the dispersiveness of modifying agent.
The content of the invention
To overcome weak point of the prior art, it is an object of the invention to provide a kind of modified asphalt composite and its
Preparation method.Its plasticity is modified in addition butadiene-styrene rubber, then is improved by glycerine water solution gelling agent, silica and calcium stearate
Stability, further improve the dispersiveness of modifying agent finally by addition propane diols.
The modified asphalt composite of the present invention, includes following components with composition weight percentages：
Asphalt 90%-97%
Butadiene-styrene rubber（SBR） 0.2%-6%
Vulcanizing agent 0.1%-6%
Silica 0.5%-1.5%
Calcium stearate 1%-4%
Glycerine water solution 0.2%-3%
Propane diols 0.5%-1.5%.
Asphalt for the present invention refers to meet《Standard specification for construction and acceptance of highway asphalt pavement》(JTG F40-2004)
The asphalt of No. 70, No. 90 or No. 110 index requests, 15 DEG C of relative densities are more than 1.02, before and after aging mass change for-
0.3%~0, its 60 DEG C of dynamic viscosity of No. 70 pitches is not more than 220Pa.s, and 60 DEG C of dynamic viscosities of No. 90 pitch are not more than
180Pa.s, 60 DEG C of dynamic viscosities of No. 110 pitch are not more than 130Pa.s.
Butadiene-styrene rubber for the present invention is preferentially to select powder styrene butadiene rubber（Abbreviation PSBR）, it is in emulsion polymerized styrene butadiene rubber
On the basis of be grafted other monomers, it with butadiene-styrene rubber in addition to significantly improving the cryogenic property feature of pitch, powder butylbenzene rubber
Glue can also be obviously improved the high-temperature behavior of pitch.
Vulcanizing agent for the present invention includes the inorganic sulfur agent beyond sulphur, sulfur-containing compound, sulphur, oximes, nitrosylation
Compound, polyamine, organic peroxide, resin curative.
Glycerine and water quality ratio for the glycerine water solution of the present invention are 1：2-2：1 mixture.
A kind of preparation method of high and low temperature resistance pitch of the present invention, comprises the following steps：
(1) first petroleum pitch feedstock is poured into heating tank, it is carried out to be heated to flow regime；
(2) under stirring, appropriate calcium stearate and vulcanizing agent and butadiene-styrene rubber and silica are sequentially added；
Again with dispersing apparatus by said mixture speed lapping for a period of time, be uniformly dispersed；
(4) finally addition glycerine water solution and propane diols, rise temperature continue grinding distribution for a period of time；
(5) system is cooled to 160 DEG C, development a period of time in later stage can obtain product.
The preparation method of described high and low temperature resistance pitch, step (1) in, heating-up temperature is to 175-190 DEG C.
The preparation method of described high and low temperature resistance pitch, step (3) in, jitter time control in 1-3h.
The preparation method of described high and low temperature resistance pitch, step (4) in, temperature raise 220-260 DEG C, persistently divide
Time control is dissipated in 1-3h.
The preparation method of described high and low temperature resistance pitch, step (5) in, in the case of being modified at the scene, after general
Phase development needs 1-3h.
Dispersing apparatus used in this method can use mixing plant, cutter or colloid mill.
Preferentially, the storage time of modified pitch does not exceed typically 24 hours, and storage temperature is at 150-160 DEG C.
The present invention has following advantages and characteristic：
(1) preparation technology is simple, and cost is low；
(2) flow time is short, easily large-scale production.
Embodiment
Embodiment one：
Prepared pitch contains following component：
Asphalt 90%
Butadiene-styrene rubber（SBR） 2%
Powdery sulfur chloride 1%
Silica 0.5%
Calcium stearate 4%
Glycerine water solution 2%
Propane diols 0.5%
Specific preparation method is as follows：
First take 9kg No. 70 asphalt to pour into heating tank, it is carried out to be heated to 175 DEG C, added rapidly under stirring
Add 0.4kg calcium stearate, 0.1kg powdery sulfur chloride, 0.2kg butadiene-styrene rubber, 0.05kg silica, disperseed with colloid mill
Said mixture speed lapping 1h is finally added 0.2kg glycerine and 0.05k aqueous solution propane diols by equipment, raises temperature 220
DEG C, continue grinding distribution 1h, system is cooled to 160 DEG C, the modified pitch that can be processed after later stage development 1h is for making
With.
Embodiment two：
Prepared pitch contains following component：
Matrix pitch 91%
Butadiene-styrene rubber（SBR） 1%
Morpholine disulphide 2%
Silica 1.5%
Calcium stearate 2%
Glycerine water solution 1%
Propane diols 1.5%
Specific preparation method is as follows：
First take 45.5kg No. 90 asphalt to pour into heating tank, it is carried out to be heated to 180 DEG C, it is rapid under stirring
1kg calcium stearate, 1kg morpholine disulphide, 0.5kg butadiene-styrene rubber powder, 0.75kg silica are added, uses cutter
Said mixture speed lapping 2h is finally added 0.5kg glycerine water solutions and 0.75kg propane diols by dispersing apparatus, raises temperature
240 DEG C, continue grinding distribution 2h, system is cooled to 160 DEG C, the modified pitch that can be processed after later stage development 2h supplies
Use.
Embodiment three：
Prepared pitch contains following component：
Matrix pitch 97%
Butadiene-styrene rubber（SBR） 0.3%
Alkyl phenol disulfide 0.5%
Silica 0.5%
Calcium stearate 1%
Glycerine water solution 0.2%
Propane diols 0.5%
Specific preparation method is as follows：
First take 194kg No. 110 asphalt to pour into heating tank, it is carried out to be heated to 190 DEG C, it is rapid under stirring
2kg calcium stearate, 1kg alkyl phenol disulfide, 0.6kg butadiene-styrene rubber powder, 1kg silica are added, with shearing
Said mixture speed lapping 3h is finally added 0.4kg kg glycerine water solutions and 1kg propane diols, rise temperature by machine dispersing apparatus
260 DEG C of degree, continue grinding distribution 3h, system is cooled to 160 DEG C, the modified pitch that can be processed after later stage development 3h
For using.
Claims (8)
1. a kind of high-low temperature resistant modified pitch for adding propane diols, it is characterised in that the asphalt stock includes following components：
Asphalt 90%-97%
Butadiene-styrene rubber（SBR） 0.2%-6%
Vulcanizing agent 0.1%-6%
Silica 0.5%-1.5%
Calcium stearate 1%-4%
Glycerine water solution 0.2%-3%
Propane diols 0.5%-1.5%.
A kind of 2. high-low temperature resistant modified pitch for adding propane diols as claimed in claim 1, it is characterised in that described oil
Pitch refers to meet《Standard specification for construction and acceptance of highway asphalt pavement》(JTG F40-2004) No. 70, No. 90 or No. 110 index requests
Asphalt, 15 DEG C of relative densities are more than 1.02, and mass change is -0.3%~0 before and after aging, and 60 DEG C of its No. 70 pitches are dynamic
Power viscosity is not more than 220Pa.s, and 60 DEG C of dynamic viscosities of No. 90 pitch are not more than 180Pa.s, and 60 DEG C of dynamic viscosities of No. 110 pitch are not
More than 130Pa.s；Described vulcanizing agent includes the inorganic sulfur agent beyond sulphur, sulfur-containing compound, sulphur, oximes, nitroso chemical combination
Thing, polyamine, organic peroxide, resin curative；The glycerine of described glycerine water solution is 1 with water quality ratio：2-2：1
Mixture.
3. the high-low temperature resistant modified pitch of a kind of addition propane diols as described in claim 1-2 is any, it is characterised in that this changes
The preparation method of property pitch includes following following steps：
(1) first petroleum pitch feedstock is poured into heating tank, it is carried out to be heated to flow regime；
(2) under stirring, appropriate calcium stearate and vulcanizing agent and butadiene-styrene rubber and silica are sequentially added；
Again with dispersing apparatus by said mixture speed lapping for a period of time, be uniformly dispersed；
(4) finally addition glycerine water solution and propane diols, rise temperature continue grinding distribution for a period of time；
(5) system is cooled to 160 DEG C, development a period of time in later stage can obtain product.
4. a kind of high-low temperature resistant modified pitch for adding propane diols as claimed in claim 3, it is characterised in that in step (1)
In, heating-up temperature is to 175-190 DEG C.
5. a kind of high-low temperature resistant modified pitch for adding propane diols as claimed in claim 3, it is characterised in that in step (3)
In, jitter time is controlled in 1-3h.
6. a kind of high-low temperature resistant modified pitch for adding propane diols as claimed in claim 3, it is characterised in that in step (4)
In, temperature raises 220-260 DEG C, continues jitter time control in 1-3h.
7. a kind of high-low temperature resistant modified pitch for adding propane diols as claimed in claim 3, it is characterised in that in step (5)
In, in the case of being modified at the scene, general later stage development needs 1-3h.
8. the high-low temperature resistant modified pitch of a kind of addition propane diols as described in claim 4-7 is any, it is characterised in that scattered
Equipment can use mixing plant, cutter or colloid mill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711049099.4A CN107828219A (en) | 2017-10-31 | 2017-10-31 | A kind of high-low temperature resistant modified pitch and its preparation technology for adding propane diols |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711049099.4A CN107828219A (en) | 2017-10-31 | 2017-10-31 | A kind of high-low temperature resistant modified pitch and its preparation technology for adding propane diols |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107828219A true CN107828219A (en) | 2018-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711049099.4A Pending CN107828219A (en) | 2017-10-31 | 2017-10-31 | A kind of high-low temperature resistant modified pitch and its preparation technology for adding propane diols |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1487029A (en) * | 2002-09-30 | 2004-04-07 | 西北师范大学高分子研究所 | Modified asphalt material for road and its prepn |
| CN102051056A (en) * | 2009-10-27 | 2011-05-11 | 中国石油化工股份有限公司 | Styrene-butadiene rubber modified asphalt composition and preparation method thereof |
| CN103102701A (en) * | 2011-11-10 | 2013-05-15 | 中国石油化工股份有限公司 | Modified asphalt composition and preparation method thereof |
-
2017
- 2017-10-31 CN CN201711049099.4A patent/CN107828219A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1487029A (en) * | 2002-09-30 | 2004-04-07 | 西北师范大学高分子研究所 | Modified asphalt material for road and its prepn |
| CN102051056A (en) * | 2009-10-27 | 2011-05-11 | 中国石油化工股份有限公司 | Styrene-butadiene rubber modified asphalt composition and preparation method thereof |
| CN103102701A (en) * | 2011-11-10 | 2013-05-15 | 中国石油化工股份有限公司 | Modified asphalt composition and preparation method thereof |
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Application publication date: 20180323 |