CN101255029A - Road pitch reinforced fibre modifier and preparation method thereof - Google Patents
Road pitch reinforced fibre modifier and preparation method thereof Download PDFInfo
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- CN101255029A CN101255029A CNA2008100176840A CN200810017684A CN101255029A CN 101255029 A CN101255029 A CN 101255029A CN A2008100176840 A CNA2008100176840 A CN A2008100176840A CN 200810017684 A CN200810017684 A CN 200810017684A CN 101255029 A CN101255029 A CN 101255029A
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- propylene glycol
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- modifier
- aluminium chlorohydroxide
- aluminium
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Abstract
A highway asphalt enhanced fiber modifier and method for the production thereof is provided. The modifier is prepared by the steps: dissolving basic aluminum chloride in water; then adding concentrated hydrochloric acid, methanol and propylene glycol to react with the basic aluminum chloride; extracting the methanol after the reaction; drying the residue to obtain a basic aluminum chloride-propanediol complex; then heating zirconium oxychloride, propylene glycol, stearic acid, oleic acid and acrylic acid to react; then adding the basic aluminum chloride-propanediol complex to react, extracting the solvent by decompression to obtain the modifier. The invention can improve the flexibility of inorganic fiber and compatibility between inorganic fibers and asphalt organic material, and enhance the binding force by modification. Inorganic fiber processed by the modifier can significantly improve the crack resistance and anti-aging performance of the highway asphalt and prolong the service life of highways.
Description
Technical field
The present invention relates to a kind of inorganic fibre properties-correcting agent, be specifically related to a kind of road pitch reinforced fibre modifier and preparation method thereof.
Background technology
In recent years, along with Chinese economic development, the communications and transportation cause is rapidly developed, and the whole nation has formed the freeway net that extends in all direction.But heavily loaded thereupon traffic is also serious day by day, particularly overweight traffic is growing, even bituminous concrete pavement adopts modifying asphalt still not resist the load of overweight traffic, the local highway sections of some motorways are open to traffic less than just occurring early diseases such as rut, hole groove in 1 year.Some motorway is had on long abrupt slope or the busy highway section of vehicle adopts cement concrete pavement avoiding occurring rut, but has strengthened the cost of building of motorway so again.From present China transport development situation, bituminous concrete pavement will be the main pavement structure form of motorway owing to its traffic safety, comfortable, characteristics such as noise is low, the rapid facility of maintenance from now on.But bituminous concrete pavement is subjected to the influence of pitch essential property, and as not improving the bituminous physicochemical property, the performance that improve bituminous concrete is to be difficult for very much.Pitch is as the very strong macromolecule chemical material of a kind of Temperature Susceptibility, and its mechanical property difference is very big under Temperature Influence, and with the reduction of temperature, pitch is embrittlement progressively, causes bituminous concrete low temperature shrinkage crack and early stage water erosion to damage; With the rising of temperature, asphalt viscosity is index decreased, and non-deformability reduces greatly and forms the high temperature rutting deformation.On the other hand, pitch in time growth and wear out, consequently asphaltene content is more and more higher, and the oiliness composition is more and more lower, therefore pitch lose cohesion and more and more crisp, will form fatigue crack, and cause the water erosion damage.How to improve the anti-high and low temperature stability of asphalt, and anti-aging, resistance to fatigue, become the direction that numerous pavement engineering teachers, material engineering teacher make joint efforts.Method relatively more commonly used at present, the one, pitch itself is carried out chemical modification, the 2nd, in gathering materials, pitch adds such as reinforcement materials such as plant lignin's fiber, synthon or mineral inorganic fibres.Plant lignin's fibrous material is difficult for obtaining in the above two, and wear resistance and ageing resistance are relatively poor, and be non-renewable; And the synthon price is higher, is difficult to stand high temperature and mixes and stirs condition, also has ageing-resistant problem simultaneously, and therefore best pitch strongthener is the mineral inorganic fibres.Because: (1) mineral fibre is as a kind of inorganic fibre, and is obviously different with other fibers, has good ageing resistance, be beneficial to regeneration, in gathering materials, have good dispersiveness and very high oil absorption, have good thermotolerance, be other fibers can not compare; (2) mineral fibre is not influenced by asphalt high temperature mix, adapts to the various high low temperature Working environment on road surface, can significantly improve the high-temperature stability and the low-temperature performance of asphalt, and increases dynamic stability, improves the ability of opposing rut; (3) can improve the anti-water damage ability of asphalt; (4) mineral fibre has erosion-resisting abilities such as excellent antiacid, alkali resistant and anti-salt, and is aging, the degeneration of never degenerating, so asphalt can 100% regeneration; (5) mineral fibre has flame retardant properties, can slow down the particularly accident incendivity in the tunnel of road surface, so mineral fibre is a highway asphalt enhanced preferred material.U.S.'s good fortune is doubly pacified the special-purpose mineral fibre of road, is raw material with elite basalt exactly, through after the specific pre-treatment, refines to reel off raw silk from cocoons 1600 ℃ of high-temperature fusion and makes.Because China do not have this type of highway special inorganic fiber, so be used to build high-grade highway with the price import of units up to ten thousand per ton every year.
The mineral inorganic fibre has comprised physical treatment or the various inorganic fibers of producing by the hot melt spinning method, as basalt fibre, wollastonite fibre, coal ash fiber and glass fibre etc.Inorganic mineral fiber has good dimensional stability, thermotolerance, anti-chemical, flame retardant resistance and electrical insulating property, the advantage that fire prevention, little, the anticorrosion acid and alkali-resistance of moisture absorption modification and anti-salt etc. are unique.But inorganic mineral fiber fragility is big, and rigidity is strong, and the surface polarity group is few, and is wetting with water generates only, and poor with pitch organic materials consistency, is difficult to mix when mix.Therefore must pass through chemical modification, adopt technology such as surface coating, introduce ionogen, tensio-active agent or other organic active group on the inorganic mineral fiber surface, make and act on its surperficial interfacial force and change, the telegraph key affinity interaction when being contacted, matrix such as mineral fibre and pitch takes place, adsorb, connection and attached collection effect, be mixed in the bituminous material thereby the ore deposit fibre in a large number, is evenly melted, when road surfacing, be intertwined to form netted pavement structure with pitch.At present domestic most inorganic material surface study on the modification focuses mostly on aspect the modification of inorganic powder, and it is very few to carry out the research of inorganic mineral fiber surface modification, does not have special-purpose inorganic mineral fiber modifier.The properties-correcting agent that promptly is to use also is the ready-made technology that only limits to use other industry, and relates to the ionic nature of properties-correcting agent hardly.
Summary of the invention
The object of the present invention is to provide a kind of easily synthetic, cost is low and road pitch reinforced fibre modifier that modified effect is good and preparation method thereof.
For achieving the above object, the technical scheme of this bright employing is:
1) preparation of aluminium chlorohydroxide-propylene glycol complex compound
At first getting 1 part of aluminium chlorohydroxide by mass fraction adds and is stirred to aluminium chlorohydroxide in 1.5 parts of water and dissolves fully, drip the concentrated hydrochloric acid of 0.2-0.3 part then in the aluminium chlorohydroxide after dissolving, controlled temperature is no more than 50 ℃, and then 80 ℃ of backflows of methyl alcohol heating that add 2.0-2.3 part, the propylene glycol reaction that adds 0.1-0.2 part at last, solvent methanol was extracted in decompression out after reaction was finished, and residuum obtains aluminium chlorohydroxide-propylene glycol complex compound in 100 ℃ of oven dry;
2) preparation of fortifying fibre properties-correcting agent
Get the zirconium oxychloride of 1-1.5 part, the propylene glycol of 8.5-9.5 part and stearic acid, oleic acid or the vinylformic acid of 2.0-2.5 part by mass fraction and be heated to 70 ℃, reaction 30min, aluminium chlorohydroxide-propylene glycol the complex compound that adds 1.7-1.9 part then keeps thermotonus 1h, the solvent propylene glycol is extracted in decompression out, gets faint yellow viscous liquid and is fortifying fibre properties-correcting agent.
The road pitch reinforced fibre modifier that obtains according to preparation method of the present invention, its molecular structure is made up of inorganic metal aluminium, zirconium and organic coordination base two portions, wherein aluminium zirconium mol ratio is 6: 1～1.5: 1, and organo-metallic coordination base is 0.25～1 with the metal molar ratio; Its chemical structural formula is:
[Al(OR
1O)
aCl
b(OH)
c]
x[OC(R
2)O]
y[ZrCl
d(OH)
e]
x
X wherein, y, z=1～100; 2a+b+c=4; D+e=z;-OR
1O-is base ,-OR organic the joining of containing bifunctional
2The O-dentate has anionic group; R in the molecular structure
2Be: vinylformic acid, lipid acid or oleic acid.
The present invention is applicable to by the highway asphalt enhancing of physics or hot melt process production and uses the organically-modified of inorganic fibers that it comprises basalt fibre, wollastonite fibre, sepiolite fibre, gypsum fiber, coal ash fiber and glass fibre; Be a class have more than one can with the functional group on inorganic mineral surface and more than one with the material of the coupling type structure of organic substrate functional groups.The structure of its molecule is:
R is an organic functions base, can provide properties-correcting agent good organic affinity and reactivity.Inorganic coupling group in its molecular structure can with the various functional group reactionses on mineral fibre surface, form strong chemical bonding, another part have the machine affinity organic group can with pitch organic substrate generation avidity, thereby between the very big material of mineral inorganic fibre and two kinds of nature differences of pitch organic substrate, produce " molecule bridge " with specific function, make both produce uniform mixing, thereby when the road surfacing moulding, form uniform reticulated structure, improve bituminous pavement resistance to cracking and resistance to deterioration greatly, the ability of opposing rut and water erosion infringement, anti-high, low-temperature stability prolongs work-ing life on road surface greatly.
Embodiment
Embodiment 1:1) preparation of aluminium chlorohydroxide-propylene glycol complex compound
At first getting 1 part of aluminium chlorohydroxide by mass fraction adds and is stirred to aluminium chlorohydroxide in 1.5 parts of water and dissolves fully, drip 0.2 part concentrated hydrochloric acid then in the aluminium chlorohydroxide after dissolving, controlled temperature is no more than 50 ℃, and then the methyl alcohol that adds 2.32 parts heats 80 ℃ of backflows, the propylene glycol reaction that adds 0.132 part at last, solvent methanol was extracted in decompression out after reaction was finished, and residuum obtains aluminium chlorohydroxide-propylene glycol complex compound in 100 ℃ of oven dry;
2) preparation of fortifying fibre properties-correcting agent
Get 12 parts zirconium oxychloride, 9.52 parts propylene glycol and 2.32 parts stearic acid by mass fraction and be heated to 70 ℃, reaction 30min, aluminium chlorohydroxide-propylene glycol the complex compound that adds 1.82 parts then keeps thermotonus 1h, the solvent propylene glycol is extracted in decompression out, gets faint yellow viscous liquid and is fortifying fibre properties-correcting agent.
Embodiment 2:1) preparation of aluminium chlorohydroxide-propylene glycol complex compound
At first getting 1 part of aluminium chlorohydroxide by mass fraction adds and is stirred to aluminium chlorohydroxide in 1.5 parts of water and dissolves fully, drip 0.3 part concentrated hydrochloric acid then in the aluminium chlorohydroxide after dissolving, controlled temperature is no more than 50 ℃, and then the methyl alcohol that adds 2.1 parts heats 80 ℃ of backflows, the propylene glycol reaction that adds 0.17 part at last, solvent methanol was extracted in decompression out after reaction was finished, and residuum obtains aluminium chlorohydroxide-propylene glycol complex compound in 100 ℃ of oven dry;
2) preparation of fortifying fibre properties-correcting agent
Get 1.3 parts zirconium oxychloride, 9.2 parts propylene glycol and 2.5 parts oleic acid by mass fraction and be heated to 70 ℃, reaction 30min, aluminium chlorohydroxide-propylene glycol the complex compound that adds 1.9 parts then keeps thermotonus 1h, the solvent propylene glycol is extracted in decompression out, gets faint yellow viscous liquid and is fortifying fibre properties-correcting agent.
Embodiment 3:1) preparation of aluminium chlorohydroxide-propylene glycol complex compound
At first getting 1 part of aluminium chlorohydroxide by mass fraction adds and is stirred to aluminium chlorohydroxide in 1.5 parts of water and dissolves fully, drip 0.25 part concentrated hydrochloric acid then in the aluminium chlorohydroxide after dissolving, controlled temperature is no more than 50 ℃, and then the methyl alcohol that adds 2.0 parts heats 80 ℃ of backflows, the propylene glycol reaction that adds 0.1 part at last, solvent methanol was extracted in decompression out after reaction was finished, and residuum obtains aluminium chlorohydroxide-propylene glycol complex compound in 100 ℃ of oven dry;
2) preparation of fortifying fibre properties-correcting agent
Get 1.1 parts zirconium oxychloride, 9.0 parts propylene glycol and 2.0 parts vinylformic acid by mass fraction and be heated to 70 ℃, reaction 30min, aluminium chlorohydroxide-propylene glycol the complex compound that adds 1.7 parts then keeps thermotonus 1h, the solvent propylene glycol is extracted in decompression out, gets faint yellow viscous liquid and is fortifying fibre properties-correcting agent.
Embodiment 4:1) preparation of aluminium chlorohydroxide-propylene glycol complex compound
At first getting 1 part of aluminium chlorohydroxide by mass fraction adds and is stirred to aluminium chlorohydroxide in 1.5 parts of water and dissolves fully, drip 0.23 part concentrated hydrochloric acid then in the aluminium chlorohydroxide after dissolving, controlled temperature is no more than 50 ℃, and then the methyl alcohol that adds 2.2 parts heats 80 ℃ of backflows, the propylene glycol reaction that adds 0.15 part at last, solvent methanol was extracted in decompression out after reaction was finished, and residuum obtains aluminium chlorohydroxide-propylene glycol complex compound in 100 ℃ of oven dry;
2) preparation of fortifying fibre properties-correcting agent
Get 1.4 parts zirconium oxychloride, 8.8 parts propylene glycol and 2.1 parts stearic acid by mass fraction and be heated to 70 ℃, reaction 30min, aluminium chlorohydroxide-propylene glycol the complex compound that adds 1.75 parts then keeps thermotonus 1h, the solvent propylene glycol is extracted in decompression out, gets faint yellow viscous liquid and is fortifying fibre properties-correcting agent.
Embodiment 5:1) preparation of aluminium chlorohydroxide-propylene glycol complex compound
At first getting 1 part of aluminium chlorohydroxide by mass fraction adds and is stirred to aluminium chlorohydroxide in 1.5 parts of water and dissolves fully, drip 0.28 part concentrated hydrochloric acid then in the aluminium chlorohydroxide after dissolving, controlled temperature is no more than 50 ℃, and then the methyl alcohol that adds 2.0 parts heats 80 ℃ of backflows, the propylene glycol reaction that adds 0.2 part at last, solvent methanol was extracted in decompression out after reaction was finished, and residuum obtains aluminium chlorohydroxide-propylene glycol complex compound in 100 ℃ of oven dry;
2) preparation of fortifying fibre properties-correcting agent
Get 1.5 parts zirconium oxychloride, 8.5 parts propylene glycol and 2.4 parts vinylformic acid by mass fraction and be heated to 70 ℃, reaction 30min, aluminium chlorohydroxide-propylene glycol the complex compound that adds 1.85 parts then keeps thermotonus 1h, the solvent propylene glycol is extracted in decompression out, gets faint yellow viscous liquid and is fortifying fibre properties-correcting agent.
Road pitch reinforced fibre modifier of the present invention is easy to use when the inorganic fibre modification, and available a small amount of alcohol water melts, and adds entry again, can be made into certain density emulsion.Can when hot melt process is produced inorganic fibre spray silk, carry out modification, also play cooling effect simultaneously, also can carry out modification by soaking the filtration drying method to fiber by direct contact of nozzle atomization with the spray silky fibre.But fiber behind modifier modification, promptly become in the water not wettable and in oily medium decentralized, be beneficial to the abundant dispersion in pitch.Its consumption is 0.1%～1% of a fibre weight, can improve the flexibility of fiber, improves the consistency of inorganic fibre and pitch organic materials, strengthens its bonding force.The inorganic fibre that utilizes this properties-correcting agent to handle can improve the resistance to cracking and the resistance to deterioration of Expressway Asphalt greatly, improves the work-ing life of highway.
Claims (3)
1, a kind of preparation method of road pitch reinforced fibre modifier is characterized in that:
1) preparation of aluminium chlorohydroxide-propylene glycol complex compound
At first getting 1 part of aluminium chlorohydroxide by mass fraction adds and is stirred to aluminium chlorohydroxide in 1.5 parts of water and dissolves fully, drip the concentrated hydrochloric acid of 0.2-0.3 part then in the aluminium chlorohydroxide after dissolving, controlled temperature is no more than 50 ℃, and then 80 ℃ of backflows of methyl alcohol heating that add 2.0-2.3 part, the propylene glycol reaction that adds 0.1-0.2 part at last, solvent methanol was extracted in decompression out after reaction was finished, and residuum obtains aluminium chlorohydroxide-propylene glycol complex compound in 100 ℃ of oven dry;
2) preparation of fortifying fibre properties-correcting agent
Get the zirconium oxychloride of 1-1.5 part, the propylene glycol of 8.5-9.5 part and stearic acid, oleic acid or the vinylformic acid of 2.0-2.5 part by mass fraction and be heated to 70 ℃, reaction 30min, aluminium chlorohydroxide-propylene glycol the complex compound that adds 1.7-1.9 part then keeps thermotonus 1h, the solvent propylene glycol is extracted in decompression out, gets faint yellow viscous liquid and is fortifying fibre properties-correcting agent.
2, the road pitch reinforced fibre modifier that obtains of preparation method according to claim 1, it is characterized in that: its molecular structure is made up of inorganic metal aluminium, zirconium and organic coordination base two portions, wherein aluminium zirconium mol ratio is 6: 1～1.5: 1, and organo-metallic coordination base is 0.25～1 with the metal molar ratio.
3, the road pitch reinforced fibre modifier that obtains of preparation method according to claim 1, it is characterized in that: its chemical structural formula is:
[Al(OR
1O)
aCl
b(OH)
e]
x[OC(R
2)O]
y[ZrCl
d(OH)
e]
z
X wherein, y, z=1～100; 2a+b+c=4; D+e=z;-OR
1O-is base ,-OR organic the joining of containing bifunctional
2The O-dentate has anionic group; R in the molecular structure
2Be: vinylformic acid, lipid acid or oleic acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100176840A CN101255029A (en) | 2008-03-11 | 2008-03-11 | Road pitch reinforced fibre modifier and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100176840A CN101255029A (en) | 2008-03-11 | 2008-03-11 | Road pitch reinforced fibre modifier and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN101255029A true CN101255029A (en) | 2008-09-03 |
Family
ID=39890193
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|---|---|---|---|
| CNA2008100176840A Pending CN101255029A (en) | 2008-03-11 | 2008-03-11 | Road pitch reinforced fibre modifier and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102491683A (en) * | 2011-11-14 | 2012-06-13 | 长安大学 | Method for preparing mineral cotton fiber and asphalt mixture for roads |
| CN102702607A (en) * | 2012-06-29 | 2012-10-03 | 长沙理工大学 | Composite asphalt modifier and preparation method thereof |
| CN102876057A (en) * | 2012-07-09 | 2013-01-16 | 江苏富祥新材料科技有限公司 | Modified asphalt |
| CN103030320A (en) * | 2012-09-26 | 2013-04-10 | 天津市市政工程研究院 | Anti-stripping agent for improving asphalt and stone adhesiveness and preparation method thereof |
-
2008
- 2008-03-11 CN CNA2008100176840A patent/CN101255029A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102491683A (en) * | 2011-11-14 | 2012-06-13 | 长安大学 | Method for preparing mineral cotton fiber and asphalt mixture for roads |
| CN102702607A (en) * | 2012-06-29 | 2012-10-03 | 长沙理工大学 | Composite asphalt modifier and preparation method thereof |
| CN102876057A (en) * | 2012-07-09 | 2013-01-16 | 江苏富祥新材料科技有限公司 | Modified asphalt |
| CN102876057B (en) * | 2012-07-09 | 2015-02-18 | 江苏富祥新材料科技有限公司 | Modified asphalt |
| CN103030320A (en) * | 2012-09-26 | 2013-04-10 | 天津市市政工程研究院 | Anti-stripping agent for improving asphalt and stone adhesiveness and preparation method thereof |
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Application publication date: 20080903 |