CN108102398A - A kind of modified pitch of biology base photocatalytic degradation vehicle exhaust and preparation method thereof - Google Patents
A kind of modified pitch of biology base photocatalytic degradation vehicle exhaust and preparation method thereof Download PDFInfo
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- CN108102398A CN108102398A CN201711311863.0A CN201711311863A CN108102398A CN 108102398 A CN108102398 A CN 108102398A CN 201711311863 A CN201711311863 A CN 201711311863A CN 108102398 A CN108102398 A CN 108102398A
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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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- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
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- C08K2003/0837—Bismuth
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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
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- C08K2201/011—Nanostructured additives
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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Abstract
The invention belongs to asphalt material technical fields, are related to a kind of modified pitch of biology base photocatalytic degradation vehicle exhaust and preparation method thereof.It includes 100 parts of hards grades of bitumen, 0.5 5 parts of warm-mixing agents, 15 parts of plasticizer, 15 parts of stabilizers, 1 50 parts of improved plant pitches, 15 parts of age resisters and 1 10 parts of catalysis materials.Compared with prior art, the modified pitch fully combines the effect that both hard grades of bitumen and the plant asphalt of biology base intrinsic advantage form " coupling hardness with softness ", it is aided with additive simultaneously and modified measures makes up the deficiency of itself, the biology base modified pitch with excellent properties is made, the addition of catalysis material makes the biology base modified pitch have the function of vehicle exhaust of degrading.Not only material therefor is environmentally protective for preparation process, and realization is turned waste into wealth, and not only properties are excellent and can realize the purification of vehicle exhaust for obtained modified pitch, can realize alleviation problem of environmental pollution while response cycle is economical again.
Description
Technical field
The invention belongs to asphalt material technical field, it particularly relates to arrive a kind of biology base photocatalytic degradation car tail
Modified pitch of gas and preparation method thereof.
Background technology
With the constantly improve to flourish with infrastructure of China's transportation business, energy shortage and environmental pollution
Problem is increasingly shown.Asphalt is a kind of product of crude oil processing, is the residue after crude distillation, in view of its own
Property is widely used in road pavement and building field, and the whole world remains high to the demand of pitch.According to the U.S. " transparency market
The newest report of research ", it is contemplated that the demand of global pitch in 2018 is up to 1.2199 hundred million tons, the compound year of 2012-2018
Growth rate is 2.3%.With the quickening of development step, pitch resource the defects of property gradually shows.Due to crude oil itself can not
Reproducibility causes the increasingly atrophy of pitch resource, find suitable substitute products be road field development urgent problem it
One.Moreover, with the sustainable growth of the magnitude of traffic flow, the pollution that vehicle exhaust is brought is increasingly serious.Nitrogen oxidation in tail gas
Object (NOx) the serial environmental problems such as acid rain, photochemical fog, water and soil acidifying can be triggered, how to administer NOxBecome particularly important.
For asphalt it is short the problem of, the appearance of biology base pitch can effectively alleviate this problem.Biology base pitch
It is product of the various farm-forestry crops after pyrolysis process.Plant asphalt is one kind of biology base pitch, is processed by plant,
Appearance is similar to asphalt, can be used as a kind of reproducible novel asphalt substitute, and with renewable, environmentally friendly and price
Cheap advantage.
China gradually carries out the research of biology base pitch, but mainly around how to be mixed be fitted in matrix pitch it is real
Now part replaces asphalt.Plant asphalt has advantage and deficiency in its performance in itself, if can be carried out to plant asphalt pre-
Processing keeps intrinsic advantage simultaneously to make up in performance insufficient, then carries out with asphalt being mixed to prepare the excellent life of various aspects of performance
Object base modified pitch, is aided with catalysis material, obtains a kind of modified pitch of biology base photocatalytic degradation vehicle exhaust, can not only
Energy problem is solved, can also be achieved waste utilization turns waste into wealth, and will be with very distinct environmental benefit.
The content of the invention
In order to solve the above technical problems, the present invention provides a kind of modified pitch of biology base photocatalytic degradation vehicle exhaust
And preparation method thereof.This kind of modified pitch fully combines the two itself using hard grades of bitumen and the plant asphalt of biology base as raw material
The advantage of " firm " and " soft " forms the effect of " coupling hardness with softness ", while is aided with additive and modified measures make up the deficiency of itself,
It is final to prepare with excellent high temperature, low temperature and biology base modified pitch to anti-water damage property, while add in photocatalysis
Material makes this kind of biology base modified pitch have the function of vehicle exhaust of degrading.Not only institute in the preparation process of this kind of modified pitch
Environmentally protective with material, realization is turned waste into wealth, and the modified pitch of obtained biology base photocatalytic degradation vehicle exhaust is not only every
It has excellent performance and can realize the purification of tail gas, can realize alleviation problem of environmental pollution while response cycle is economical again.
The modified pitch of biology base photocatalytic degradation vehicle exhaust of the present invention is in parts by mass, hard including 100 parts
Matter pitch, 0.5-5 part warm-mixing agent, 1-5 parts of plasticizer, 1-5 parts of stabilizers, 1-50 parts of improved plant pitches, 1-5 parts of age resisters
With 1-10 parts of catalysis materials.
The modified pitch of biology base photocatalytic degradation vehicle exhaust of the present invention, the hard grades of bitumen be marked as
One or more of 10-50 pitches.
The modified pitch of biology base photocatalytic degradation vehicle exhaust of the present invention, the warm-mixing agent are Sasobit, PE
One or more of wax, Fischer-Tropsch wax, palm wax.
The modified pitch of biology base photocatalytic degradation vehicle exhaust of the present invention, the plasticizer are three fourth of citric acid
Ester, tributyl 2-acetylcitrate, dioctyl sebacate, dibutyl sebacate, phenyl alkylsulf, hexanedioic acid dioctyl ester, epoxy
One or more of oleic acid monooctyl ester, epoxyoleic acid butyl ester.
The modified pitch of biology base photocatalytic degradation vehicle exhaust of the present invention, the stabilizer are phosphate, receive
One or more of rice calcium carbonate, Ca-Zn stabilizers.
The modified pitch of biology base photocatalytic degradation vehicle exhaust of the present invention, the age resister are six phosphorus of inositol
Acid, L (+)-tartaric acid, tert-butyl hydroquinone, betanaphthol, 2- hydroxyl -4- positive 12-alkoxy benzophenones, in (+)-myrrh
One or more of ester A and (-)-myrrh lactone A.
The modified pitch of biology base photocatalytic degradation vehicle exhaust of the present invention, the catalysis material are nanometer two
Titanium oxide, nanometer bismuth, nanometer pucherite, nanometer bismuthyl chloride, nanometer bismuthyl bromide, nanometer bismuthyl iodide, are received nanometer bismuth tungstate
One kind in rice zinc oxide, nano tin dioxide, nano zirconium dioxide, Nano cadmium sulphide.
The process for preparing modified asphalt of biology base photocatalytic degradation vehicle exhaust of the present invention, concretely comprises the following steps：1)
Hard grades of bitumen is heated to flow regime in 140-180 DEG C, warm-mixing agent is added in into shear agitation 10-30min in hard grades of bitumen, is obtained
To Warm-mix hard asphalt, plasticizer is added in Warm-mix hard asphalt and is uniformly mixed, then adds in stabilizer, be uniformly mixed
After obtain the first mixture；2) age resister is added in improved plant pitch and be uniformly mixed, obtain the second mixture；3) exist
The first mixture and the second mixture are stirred or sheared 10-30min at 120-160 DEG C, is uniformly mixed, then by photocatalysis material
Material adds in, and obtains the modified pitch of biology base photocatalytic degradation vehicle exhaust.
The process for preparing modified asphalt of biology base photocatalytic degradation vehicle exhaust of the present invention, the improved plant drip
Blue or green preparation process is specially：First plant asphalt is flashed, to remove water and small molecule volatile matter in advance；With Ludox
It is raw material with zirconium oxychloride, hydro-thermal method synthesizes the Zr-Si molecular sieves of ZSM-5 structures, then with the sulfuric acid treatment molecular sieve,
The SO of ZSM-5 structures is made in 550 DEG C of roastings4 2-/ZrO2-SiO2Molecular sieve type solid super-strong acid, as catalyst for esterification reaction；To
By plant asphalt, reaction acid and the SO after flash distillation in four-hole boiling flask equipped with thermometer, stirring facility and condenser pipe4 2-/ZrO2-
SiO2Molecular sieve type solid super-strong acid adds in, and reaction acid is the 5-20% of plant asphalt quality, and reaction temperature is controlled in 100-150
DEG C, condensing reflux；It reacts 1-3h and stops reaction, be filtered to remove the molecular sieve as catalyst, obtain improved plant pitch.
The process for preparing modified asphalt of biology base photocatalytic degradation vehicle exhaust of the present invention, the reaction acid are horse
Come the mixture of acid anhydrides and polyphosphoric acids or the mixture of trimellitic anhydride and polyphosphoric acids, mass ratio wherein shared by polyphosphoric acids
Example is 5-25%.
Compared with prior art, the modified pitch of biology base photocatalytic degradation vehicle exhaust of the present invention and its preparation
Method has the advantages that：
1) biology base performance of modified bitumen is excellent.
Warm-mix hard asphalt reduces construction temperature while pitch excellent high temperature performance is kept, and saves the energy and disappears
Consumption, the plasticizer of addition can improve the compatibility with improved plant pitch while cryogenic property is improved, and stabilizer to drip
Green grass or young crops is integrally formed net structure, and stabilization is not easy to isolate.In addition, the aging of pitch includes two sides of thermo-oxidative ageing and photooxidation resistance
Face, addition age resister, which especially adds (-)-myrrh lactone A, can significantly improve the heat-resisting oxygen and resistance to UV aging of pitch
Energy.
For in plant asphalt, there are some with water-soluble alcohol micromolecular, so as to influence modified pitch and gather materials
Adhesiveness, is modified plant asphalt processing at the problem of causing the water stability of asphalt bad.Flash distillation is first passed through to go
Except a part of water and low molecule volatile matter, then with SO4 2-/ZrO2-SiO2Molecular sieve type solid super-strong acid is catalyst
Reaction acid is added under situation, makes the low molecule alcohols such as ethylene glycol, propylene glycol in plant asphalt and reaction acid that esterification occur.
Maleic anhydride and trimellitic anhydride mainly provide the acid ingredient needed for esterification in reaction acid, and polyphosphoric acids is keeping acid
Plant asphalt can be modified while environment, improve the high-temperature behavior of plant asphalt.Final modified plant asphalt has
Good high and low temperature and the performance for resisting Moisture Damage.Age resister can alleviate improved plant pitch and be mixed with Warm-mix hard asphalt
The aging phenomenon of process.
Warm-mix hard asphalt is mixed with improved plant pitch can obtain with excellent high temperature, low temperature and resist Water Damages
The biology base modified pitch of energy, and plant asphalt substitutes after modified processing and the ratio of modified pitch is significantly increased.
2) biology base modified pitch functionalization.
Catalysis material is added in biology base modified pitch, biology base modified pitch is imparted and realizes degradation car tail
The function of gas, this not only meets the needs of biology base pitch substitutes modified oil pitch, and realizes its functionalization.Due to plant
Pitch own viscosity is low and polar compound more than feature so that nanoscale catalysis material is more easy to be uniformly dispersed in it so that
The performance of modified bitumen of the biology base photocatalytic degradation vehicle exhaust of preparation is well stablized.
3) material therefor is environmentally protective.
Additive therefor is environmentally protective, and the large scale use of plant asphalt, which realizes, turns waste into wealth, and not only solves the energy
The problem of nervous, the security of road transport is improved, and embody the reason of circular economy.
Specific embodiment
With reference to specific embodiment to the modified pitch of biology base photocatalytic degradation vehicle exhaust of the present invention and
Its preparation method is described further, but protection scope of the present invention is not limited to this.
Embodiment 1
100 parts of No. 30 hards grades of bitumen are heated to flow regime in 140-180 DEG C, 3 parts of Fischer-Tropsch waxes are added in into hard grades of bitumen
Middle shear agitation 10-30min, obtains Warm-mix hard asphalt, and 2 parts of dioctyl sebacates are added in Warm-mix hard asphalt and are mixed
Uniformly, then 2 parts of Ca-Zn stabilizers are added in, obtains the first mixture after mixing；2.5 parts of L (+)-tartaric acid is added in
Into 30 parts of improved plant pitches, mixture is uniform, obtains the second mixture；By the first mixture and second at 120-160 DEG C
Mixture stirs or shearing 10-30min, is uniformly mixed, then adds in 5 parts of nanometer bismuths, obtain biology base photocatalytic degradation vapour
The modified pitch of tail gas.
The preparation of improved plant pitch：First plant asphalt is flashed, to remove water and small molecule volatile matter in advance；With
Ludox and zirconium oxychloride are raw material, and hydro-thermal method synthesizes the Zr-Si molecular sieves of ZSM-5 structures, then with the sulfuric acid of 0.5mol/L
The molecular sieve is handled, the SO of ZSM-5 structures is made in 550 DEG C of roastings4 2-/ZrO2-SiO2Molecular sieve type solid super-strong acid, as ester
Change catalysts；To equipped with thermometer, stirring facility and condenser pipe four-hole boiling flask in by after flash distillation plant asphalt, reaction
Acid and SO4 2-/ZrO2-SiO2Molecular sieve type solid super-strong acid adds in, and reaction acid is the 10% of plant asphalt quality, reaction temperature control
System is at 100-150 DEG C, condensing reflux.It reacts 1-3h and stops reaction, be filtered to remove the molecular sieve as catalyst, obtain modified plant
Object pitch.Reaction acid is maleic anhydride and the mixture of polyphosphoric acids, and wherein mass ratio shared by polyphosphoric acids is 10%.
Embodiment 2
100 parts of No. 20 hards grades of bitumen are heated to flow regime in 140-180 DEG C, 2.5 parts of Sasobit are added in into hard drip
Shear agitation 10-30min in green grass or young crops, obtains Warm-mix hard asphalt, and 3 parts of epoxyoleic acid monooctyl esters are added in Warm-mix hard asphalt and are mixed
It closes uniformly, then 2.5 parts of phosphates is added in, obtain the first mixture after mixing；By 1.5 parts of L (+)-tartaric acid and 1 part
2- hydroxyl -4- positive 12-alkoxy benzophenones are added in 25 parts of improved plant pitches that mixture is uniform, obtain the second mixing
Object；The first mixture and the second mixture are stirred or sheared 10-30min at 120-160 DEG C, is uniformly mixed, then by 5 parts
Nano-titanium dioxide adds in, and obtains the modified pitch of biology base photocatalytic degradation vehicle exhaust.
The preparation of improved plant pitch：First plant asphalt is flashed, to remove water and small molecule volatile matter in advance；With
Ludox and zirconium oxychloride are raw material, and hydro-thermal method synthesizes the Zr-Si molecular sieves of ZSM-5 structures, then at the sulfuric acid of 1mol/L
The molecular sieve is managed, the SO of ZSM-5 structures is made in 550 DEG C of roastings4 2-/ZrO2-SiO2Molecular sieve type solid super-strong acid, as esterification
Catalysts；To equipped with thermometer, stirring facility and condenser pipe four-hole boiling flask in by after flash distillation plant asphalt, reaction acid
And SO4 2-/ZrO2-SiO2Molecular sieve type solid super-strong acid adds in, and reaction acid is the 7% of plant asphalt mass parts, reaction temperature control
System is at 100-150 DEG C, condensing reflux.It reacts 1-3h and stops reaction, be filtered to remove the molecular sieve as catalyst, obtain modified plant
Object pitch.Reaction acid is maleic anhydride and the mixture of polyphosphoric acids, and wherein mass ratio shared by polyphosphoric acids is 8%.
Embodiment 3
100 parts of No. 30 hards grades of bitumen are heated to flow regime in 140-180 DEG C, 3 parts of palm waxs are added in into hard grades of bitumen
Middle shear agitation 10-30min, obtains Warm-mix hard asphalt, and 3 parts of tributyl 2-acetylcitrates are added in Warm-mix hard asphalt
It is uniformly mixed, then 3 parts of phosphates is added in, obtain the first mixture after mixing；By 1.5 parts of tert-butyl hydroquinone and
1 part of 2- hydroxyl -4- positive 12-alkoxy benzophenone is added in 40 parts of improved plant pitches that mixture is uniform, and it is mixed to obtain second
Close object；The first mixture and the second mixture are stirred or sheared 10-30min at 120-160 DEG C, is uniformly mixed, then by 5
Part nano tin dioxide adds in, and obtains the modified pitch of biology base photocatalytic degradation vehicle exhaust.
The preparation of improved plant pitch：First plant asphalt is flashed, to remove water and small molecule volatile matter in advance；With
Ludox and zirconium oxychloride are raw material, and hydro-thermal method synthesizes the Zr-Si molecular sieves of ZSM-5 structures, then at the sulfuric acid of 1mol/L
The molecular sieve is managed, the SO of ZSM-5 structures is made in 550 DEG C of roastings4 2-/ZrO2-SiO2Molecular sieve type solid super-strong acid, as esterification
Catalysts；To equipped with thermometer, stirring facility and condenser pipe four-hole boiling flask in by after flash distillation plant asphalt, reaction acid
And SO4 2-/ZrO2-SiO2Molecular sieve type solid super-strong acid adds in, and reaction acid is the 6% of plant asphalt mass parts, reaction temperature control
System is at 100-150 DEG C, condensing reflux.It reacts 1-3h and stops reaction, be filtered to remove the molecular sieve as catalyst, obtain modified plant
Object pitch.Reaction acid is trimellitic anhydride and the mixture of polyphosphoric acids, and wherein mass ratio shared by polyphosphoric acids is 6%.
Embodiment 4
100 parts of No. 30 hards grades of bitumen are heated to flow regime in 140-180 DEG C, 3 parts of palm waxs are added in into hard grades of bitumen
Middle shear agitation 10-30min, obtains Warm-mix hard asphalt, and 3 parts of tributyl 2-acetylcitrates are added in Warm-mix hard asphalt
It is uniformly mixed, then 3 parts of phosphates is added in, obtain the first mixture after mixing；By 1.5 parts of tert-butyl hydroquinone and
1 part of 2- hydroxyl -4- positive 12-alkoxy benzophenone is added in 40 parts of improved plant pitches that mixture is uniform, and it is mixed to obtain second
Close object；The first mixture and the second mixture are stirred or sheared 10-30min at 120-160 DEG C, is uniformly mixed, then by 5
Part nano tin dioxide adds in, and obtains the modified pitch of biology base photocatalytic degradation vehicle exhaust.
The preparation of improved plant pitch：First plant asphalt is flashed, to remove water and small molecule volatile matter in advance；With
Ludox and zirconium oxychloride are raw material, and hydro-thermal method synthesizes the Zr-Si molecular sieves of ZSM-5 structures, then at the sulfuric acid of 1mol/L
The molecular sieve is managed, the SO of ZSM-5 structures is made in 550 DEG C of roastings4 2-/ZrO2-SiO2Molecular sieve type solid super-strong acid, as esterification
Catalysts；To equipped with thermometer, stirring facility and condenser pipe four-hole boiling flask in by after flash distillation plant asphalt, reaction acid
And SO4 2-/ZrO2-SiO2Molecular sieve type solid super-strong acid adds in, and reaction acid is the 6% of plant asphalt mass parts, reaction temperature control
System is at 100-150 DEG C, condensing reflux.It reacts 1-3h and stops reaction, be filtered to remove the molecular sieve as catalyst, obtain modified plant
Object pitch.Reaction acid is trimellitic anhydride and the mixture of polyphosphoric acids, and wherein mass ratio shared by polyphosphoric acids is 6%.
The performance of modified bitumen of 1 biology base photocatalytic degradation vehicle exhaust of table
Carry out Thin Film Oven Test TFOT (TFOT) and the irradiation examination of ultraviolet (UV) baking oven respectively to modified pitch described in embodiment 1-4
It tests, concrete operations can be found in：Ageing of asphalt baking oven vertification regulation.60 DEG C of viscosity increments and softening point incremental result before and after aging
It is shown in Table 2.
Viscosity increment and softening point increment before and after 2 modified pitch aging of table
Knowable to, after TFOT and UV agings, the 60 DEG C of viscosity increments and softening point increment of modified pitch are smaller, say
Bright addition age resister, which especially adds (-)-myrrh lactone A, can significantly improve the heat-resisting oxygen and resistance to UV aging of pitch
Energy.
Claims (9)
1. a kind of modified pitch of biology base photocatalytic degradation vehicle exhaust, which is characterized in that in parts by mass, including 100 parts
Hard grades of bitumen, 0.5-5 part warm-mixing agent, 1-5 parts of plasticizer, 1-5 parts of stabilizers, 1-50 parts of improved plant pitches, 1-5 parts it is anti-aging
Agent and 1-10 parts of catalysis materials.
2. the modified pitch of biology base photocatalytic degradation vehicle exhaust according to claim 1, which is characterized in that described hard
Matter pitch is marked as one or more of 10-50 pitches；The warm-mixing agent is Sasobit, PE wax, Fischer-Tropsch wax, palm wax
One or more of.
3. the modified pitch of biology base photocatalytic degradation vehicle exhaust according to claim 1, which is characterized in that the increasing
Modeling agent is tributyl citrate, tributyl 2-acetylcitrate, dioctyl sebacate, dibutyl sebacate, phenyl alkylsulf,
One or more of adipate, epoxyoleic acid monooctyl ester, epoxyoleic acid butyl ester.
4. the modified pitch of biology base photocatalytic degradation vehicle exhaust according to claim 1, which is characterized in that described steady
Agent is determined for one or more of phosphate, nano-calcium carbonate, Ca-Zn stabilizers.
5. the modified pitch of biology base photocatalytic degradation vehicle exhaust according to claim 1, which is characterized in that described anti-
Aging agent is phytic acid, L (+)-tartaric acid, tert-butyl hydroquinone, betanaphthol, 2- hydroxyl -4- n-dodecanes oxygroup two
One or more of Benzophenone, (+)-myrrh lactone A and (-)-myrrh lactone A.
6. the modified pitch of biology base photocatalytic degradation vehicle exhaust according to claim 1, which is characterized in that the light
Catalysis material is nano-titanium dioxide, nanometer bismuth, nanometer bismuth tungstate, nanometer pucherite, nanometer bismuthyl chloride, nanometer bromination oxygen
One kind in bismuth, nanometer bismuthyl iodide, nano zine oxide, nano tin dioxide, nano zirconium dioxide, Nano cadmium sulphide.
7. the preparation method of the modified pitch of biology base photocatalytic degradation vehicle exhaust, feature exist according to claim 1
In concretely comprising the following steps：1) hard grades of bitumen is heated to flow regime in 140-180 DEG C, warm-mixing agent is added in hard grades of bitumen and is cut
Stirring 10-30min is cut, obtains Warm-mix hard asphalt, plasticizer is added in Warm-mix hard asphalt and is uniformly mixed, it then will be steady
Determine agent addition, obtain the first mixture after mixing；2) age resister is added in improved plant pitch and be uniformly mixed, obtained
To the second mixture；3) the first mixture and the second mixture are stirred at 120-160 DEG C or shearing 10-30min, mixing is equal
It is even, then catalysis material is added in, obtains the modified pitch of biology base photocatalytic degradation vehicle exhaust.
8. the preparation method of the modified pitch of biology base photocatalytic degradation vehicle exhaust, feature exist according to claim 1
In the preparation process of the improved plant pitch is specially：First plant asphalt is flashed, to remove water and small molecule in advance
Volatile matter；Using Ludox and zirconium oxychloride as raw material, hydro-thermal method synthesizes the Zr-Si molecular sieves of ZSM-5 structures, then uses sulfuric acid
The molecular sieve is handled, the SO of ZSM-5 structures is made in 550 DEG C of roastings4 2-/ZrO2-SiO2Molecular sieve type solid super-strong acid, as ester
Change catalysts；To equipped with thermometer, stirring facility and condenser pipe four-hole boiling flask in by after flash distillation plant asphalt, reaction
Acid and SO4 2-/ZrO2-SiO2Molecular sieve type solid super-strong acid add in, reaction acid be plant asphalt quality 5-20%, reaction temperature
Control is at 100-150 DEG C, condensing reflux；It reacts 1-3h and stops reaction, be filtered to remove the molecular sieve as catalyst, be modified
Plant asphalt.
9. the preparation method of the modified pitch of biology base photocatalytic degradation vehicle exhaust, feature exist according to claim 1
In, the reaction acid be maleic anhydride and the mixture or trimellitic anhydride of polyphosphoric acids and the mixture of polyphosphoric acids, wherein
Mass ratio shared by polyphosphoric acids is 5-25%.
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| CN111231039A (en) * | 2020-03-10 | 2020-06-05 | 同曦集团有限公司 | Antibacterial, antiviral and mildewproof wooden product and preparation method thereof |
| CN111393787A (en) * | 2020-05-19 | 2020-07-10 | 上海群康沥青科技股份有限公司 | Anti-aging asphalt modifier for permeable pavement and preparation method and application thereof |
| CN113045247A (en) * | 2021-03-06 | 2021-06-29 | 刘勇 | Light asphalt mixture capable of being degraded by photocatalysis and preparation method thereof |
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| CN114605110B (en) * | 2021-03-06 | 2023-05-09 | 佛山市永焕发沥青有限公司 | Preparation method of light asphalt mixture capable of being degraded by photocatalysis |
| CN113337135A (en) * | 2021-05-27 | 2021-09-03 | 吴仙婻 | High-cohesiveness flame-retardant modified asphalt and preparation method thereof |
| CN113337135B (en) * | 2021-05-27 | 2022-07-19 | 集贤金达科技有限公司 | High-cohesiveness flame-retardant modified asphalt and preparation method thereof |
| CN115160804A (en) * | 2021-05-27 | 2022-10-11 | 吴仙婻 | Preparation method of high-cohesiveness flame-retardant modified asphalt |
| CN115160804B (en) * | 2021-05-27 | 2024-03-19 | 苏州旭东建设工程有限公司 | Preparation method of high-cohesiveness flame-retardant modified asphalt |
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