CN106317919A - Environment-friendly asphalt modifier and preparation method thereof - Google Patents
Environment-friendly asphalt modifier and preparation method thereof Download PDFInfo
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- CN106317919A CN106317919A CN201610702849.2A CN201610702849A CN106317919A CN 106317919 A CN106317919 A CN 106317919A CN 201610702849 A CN201610702849 A CN 201610702849A CN 106317919 A CN106317919 A CN 106317919A
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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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Abstract
The invention belongs to the technical field of asphalt modifiers and particularly discloses an environment-friendly asphalt modifier and a preparation method thereof. The components of the environment-friendly asphalt modifier include a liquefied product of waste wood. The preparation method comprises the following steps: firstly, grinding the waste wood so as to obtain wood meal; putting the dried wood meal into a reaction kettle, adding phenol into the reaction kettle, uniformly mixing, adding concentrated sulfuric acid, and uniformly mixing, so as to obtain a black viscous product; and finally, cooling the black viscous product to the room temperature, so as to obtain the asphalt modifier. The invention further discloses modified asphalt taking the environment-friendly asphalt modifier as a modifier and a preparation method of the modified asphalt. The environment-friendly asphalt modifier disclosed by the invention is low in cost and easy to generalize, the preparation method is simple, meanwhile, the problems that the waste wood is difficult to use or low in utilization rate, and the like are solved, the comprehensive utilization rate of waste wood materials is increased, and the environmental protection is benefited; and the environment-friendly asphalt modifier is used for modifying asphalt for road engineering, so that the pavement performance of the obtained modified asphalt is remarkably improved.
Description
Technical field
The present invention relates to asphalt modifier technical field, be specifically related to a kind of environment-friendly type asphalt modifier and preparation side thereof
Method.
Background technology
Along with the sustainable growth of China's economy, the investment of infrastructure construction is greatly increased, based on highway by country
The important component part of Facilities Construction, has obtained the great attention of country and various places government.Bituminous concrete is because of its good material
Material performance, road surface comfortableness, can mechanized construction and be easy to the advantages such as maintenance, become the main of China Expressway surface layer
Material type.
In recent years, cause along with the improving constantly different from pavement usage environment of people's road pavement service level requirements
Diversity demand, functionally proposes more requirement to it, and under this background, numerous functional type Colophoniumes have obtained quickly
Development, such as SBS modified pitch, rubber powder modified asphalt, PE modified pitch, EVA modified pitch etc..Although it is current numerous functional
Colophonium can alleviate the pressure that road engineering is born, but, many modified pitch, such as SBS modified pitch, production cost is high,
Operation complexity, production process environmental pollution is the biggest, is unfavorable for large-scale promotion.Meanwhile, along with domestic and international road not
Disconnected newly-built, overhaul, and the continuous popularization of bituminous concrete, also to Colophonium, the supply of road engineering is brought immense pressure.
And the Colophonium used in road engineering is basically divided into bitumen, tar asphalt, asphalt three major types, and asphalt
It it is the main source using Colophonium in road engineering.Along with fossil energy, the exhaustion increasingly of natural resources, and environmental pollution is tight
The factor such as heavily, Colophonium supply is becoming tight day.In the face of Colophonium supply be becoming tight day and functional Colophonium difficulty promote dual-pressure it
Under, find new efficient functionality Colophonium too the most impatient to wait.
Summary of the invention
For problems of the prior art, it is an object of the invention to provide a kind of with low cost, modified effect is good
Environment-friendly type asphalt modifier and preparation method thereof.
In order to achieve the above object, the present invention is achieved by the following technical solutions.
(1) a kind of environment-friendly type asphalt modifier, it is characterised in that the composition of described environment-friendly type asphalt modifier comprises useless
The liquefaction products of timber.
Preferably, the liquefaction products of described culled wood includes following material composition: culled wood, phenol and concentrated sulphuric acid.
Preferably, the mass ratio of described culled wood, phenol and concentrated sulphuric acid is 1: (2-3): (0.05-0.07).
Preferably, described phenol is commercially available analytical pure phenol.
Preferably, described concentrated sulphuric acid is the analytical pure concentrated sulphuric acid of commercially available concentration 98%.
(2) preparation method of above-mentioned environment-friendly type asphalt modifier, it is characterised in that comprise the following steps:
Step 1, pulverizes culled wood, obtains wood flour, sifted out by described wood flour, and by by the wood flour Drying and cooling of sieve
After, standby；
Step 2, the wood flour after drying loads in reactor, and adds phenol in reactor, after mix homogeneously, adds
Concentrated sulphuric acid, uniform stirring, obtain dark thick shape product；
Step 3, is cooled to room temperature by described dark thick shape product, to obtain final product.
Preferably, in step 1, the sieve aperture of described sieve is 30-60 mesh.
Preferably, in step 2, during described uniform stirring, the temperature of regulation reactor, to 140-160 DEG C, stirs 2.0-
3.0h。
Preferably, in step 2, the mass ratio of described culled wood, phenol and concentrated sulphuric acid is 1: (2-3): (0.05-0.07).
(3) a kind of modified pitch, it is characterised in that raw material includes: road engineering Colophonium and above-mentioned environment-friendly type Colophonium
Modifying agent.
Preferably, described environment-friendly type asphalt modifier is 1 with the mass ratio of road engineering Colophonium: (19-7).
(4) preparation method of above-mentioned modified pitch, it is characterised in that use environment-friendly type asphalt modifier to road engineering
Being modified with Colophonium, modification temperature is 130-160 DEG C, and modification time is 40-60 minute, and developmental temperature is 130-160 DEG C, sends out
The time of educating is 60-120 minute.
Culled wood in the present invention is a kind of discarded ecological environment material nd, and power consumption of polymer processing is few, low in the pollution of the environment, has sky
So degradability and environment compatibility such as easy to be recycled, wood materials contains abundant cellulose, hemicellulose and lignin, contains
Have a large amount of active group with hydroxyl as representative, under certain condition, by its under the high temperature conditions with phenol and strong sulfuric acid response,
Cellulose in wood materials, lignin etc. under acid catalysed conditions, the ehter bond in point subchain such as cellulose and nucleopilic reagent benzene
Phenol there occurs electrophilic substitution reaction, ruptures, and generates oligosaccharide and glucose unit so that culled wood is converted into has one
Determine the viscous liquid material of reactivity.Be black under the liquefaction products room temperature state of the culled wood of the present invention, matter hard but can
Mould, there is certain mobility but mobility is relatively low；Its more thickness simultaneously, can soften after heating and mobility strengthens, cooling
Reinstatement again to room temperature.
Road engineering Colophonium belong to a kind of form complexity have very high viscosity liquid, culled wood is liquefied gained by the present invention
The sticky mass with certain reactivity for the modifying agent of road engineering Colophonium, the most with low cost, easily promote,
And solve the problems such as waste wood utilizes difficult or utilization rate low, substantially increase the comprehensive utilization of waste and old wood materials
Rate, improves use value and the suitability of timber, beneficially environmental conservation.
Meanwhile, the liquefaction process of the culled wood of the present invention is simple, easy, favorable reproducibility, and processing cost is low, equipment requirements
Low, the popularization and application of the environment-friendly type asphalt modifier of the present invention are greatly facilitated, can effectively alleviate road engineering to asphalt,
The dependence of bitumen.
It addition, use the environment-friendly type asphalt modifier of the present invention that road engineering Colophonium is modified, the modification obtained
The pavement performance of Colophonium is all obviously improved.
Detailed description of the invention
Below in conjunction with embodiment, embodiment of the present invention are described in detail, but those skilled in the art will
It will be appreciated that the following example is merely to illustrate the present invention, and it is not construed as limiting the scope of the present invention.
Waste and old wood is a kind of a large amount of existence and is difficult to the garbage recycled.The present invention is from economizing on resources, protecting environment
And the angle of refuse reclamation sets out, reducing the cost of asphalt modifier, it is former for selecting culled wood, phenol, concentrated sulphuric acid simultaneously
Material, develops function admirable and cheap environment-friendly type asphalt modifier through liquefaction mode.
Embodiment 1
A kind of environment-friendly type asphalt modifier, prepares according to following steps:
Step 1, tentatively pulverizes culled wood, obtains wood chips, then adds the wood chips of preliminary treatment to plant
Separating twice in pulverizer, then the wood flour obtained by separating twice sieved by the sieve aperture of 30 mesh, and by the wood flour that sieves 105
DEG C baking oven in dry after 24 hours, be cooled to room temperature, standby；
Step 2, adds phenol in the wood flour after drying, after mix homogeneously, add concentrated sulphuric acid, under the conditions of 160 DEG C all
Even stirring 2.5h, obtains dark thick shape product；Wherein, the quality of phenol is 2 times of wood flour quality, and the quality of concentrated sulphuric acid is wood flour
The 6% of quality；
Step 3, is cooled to 25 DEG C by described dark thick shape product, to obtain final product.
Embodiment 2
The environment-friendly type asphalt modifier of the present invention is used for the modification to road engineering Colophonium, investigates the property of modified pitch
Energy.
The road engineering Colophonium that the present embodiment is selected is 90# matrix pitch, the environment-friendly type drip prepared by above-described embodiment
Blue or green according in the 90# matrix pitch after inner blending method addition heating, modification temperature is 140 DEG C, and modification time is 60 minutes, grows temperature
Degree is 140 DEG C, and development time is 120 minutes, obtains modified pitch；Wherein, the addition of environment-friendly type asphalt modifier is modified drip
The 10% of blue or green quality.Modified pitch is carried out the performance tests such as softening point, needle penetration, ductility, viscosity, and with 90# matrix pitch
Contrasting, result of the test is shown in Table 1.
The properties result of the test of table 1 modified pitch
As shown in Table 1, compared to matrix pitch, the softening point of modified pitch is the most unchanged, but the pin of modified pitch
In-degree substantially decreases, and viscosity increases, it can thus be seen that use the environment-friendly type asphalt modifier of the present invention to asphalt modification
After improve the high-temperature behavior of Colophonium；Meanwhile, the ductility of modified pitch is also obviously improved, and illustrates to use the environmental protection of the present invention
The cryogenic property of Colophonium is also made moderate progress by type asphalt modifier.
From above-mentioned result of the test, the present invention is with waste and old wood as primary raw material, with low cost, and preparation method is simple,
Easily promote, while solving the environmental issues such as waste wood utilizes difficult or utilization rate low, road asphalt is had well
Modified effect, especially in terms of the crack resistance at low-temperature of Colophonium.
Although, in this specification, the present invention is described in detail the most with a general description of the specific embodiments,
But on the basis of the present invention, can make some modifications or improvements it, this will be apparent to those skilled in the art.
Therefore, these modifications or improvements without departing from theon the basis of the spirit of the present invention, belong to claimed model
Enclose.
Claims (10)
1. an environment-friendly type asphalt modifier, it is characterised in that the composition of described environment-friendly type asphalt modifier comprises culled wood
Liquefaction products.
Environment-friendly type asphalt modifier the most according to claim 1, it is characterised in that the liquefaction products of described culled wood includes
Following material composition: culled wood, phenol and concentrated sulphuric acid.
Environment-friendly type asphalt modifier the most according to claim 2, it is characterised in that described culled wood, phenol and concentrated sulphuric acid
Mass ratio be 1: (2-3): (0.05-0.07).
4. the preparation method of an environment-friendly type asphalt modifier, it is characterised in that comprise the following steps:
Step 1, pulverizes culled wood, obtains wood flour, sifted out by described wood flour, and by after by the wood flour Drying and cooling of sieve, standby
With；
Step 2, the wood flour after drying loads in reactor, and adds phenol in reactor, after mix homogeneously, adds dense sulfur
Acid, uniform stirring, obtain dark thick shape product；
Step 3, is cooled to room temperature by described dark thick shape product, to obtain final product.
The preparation method of environment-friendly type asphalt modifier the most according to claim 4, it is characterised in that in step 1, described sieve
The sieve aperture of son is 30-60 mesh.
The preparation method of environment-friendly type asphalt modifier the most according to claim 4, it is characterised in that in step 2, described all
During even stirring, the temperature of regulation reactor, to 140-160 DEG C, stirs 2.0-3.0h.
The preparation method of environment-friendly type asphalt modifier the most according to claim 4, it is characterised in that in step 2, described useless
The mass ratio of timber, phenol and concentrated sulphuric acid is 1: (2-3): (0.05-0.07).
8. a modified pitch, it is characterised in that raw material includes: the environmental protection described in road engineering Colophonium and claim 1
Type asphalt modifier.
Modified pitch the most according to claim 8, it is characterised in that described environment-friendly type asphalt modifier is used with road engineering
The mass ratio of Colophonium is 1: (19-7).
10. the preparation method of the modified pitch described in claim 8, it is characterised in that use described environment-friendly type asphalt modifier
Being modified road engineering Colophonium, modification temperature is 130-160 DEG C, and modification time is 40-60 minute, and developmental temperature is
130-160 DEG C, development time is 60-120 minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610702849.2A CN106317919A (en) | 2016-08-22 | 2016-08-22 | Environment-friendly asphalt modifier and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610702849.2A CN106317919A (en) | 2016-08-22 | 2016-08-22 | Environment-friendly asphalt modifier and preparation method thereof |
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| Publication Number | Publication Date |
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| CN106317919A true CN106317919A (en) | 2017-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610702849.2A Pending CN106317919A (en) | 2016-08-22 | 2016-08-22 | Environment-friendly asphalt modifier and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109735120A (en) * | 2018-11-15 | 2019-05-10 | 南京交通职业技术学院 | A kind of modification biological asphalt material and preparation method thereof and purposes |
| CN109957257A (en) * | 2019-03-15 | 2019-07-02 | 长安大学 | A kind of biomass asphalt modifier and the preparation method and application thereof |
| CN110183868A (en) * | 2019-06-24 | 2019-08-30 | 长安大学 | Application and sustainable modified pitch and preparation method of the Poplar Powder liquefaction products as sustainable asphalt modifier |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103275497A (en) * | 2013-05-14 | 2013-09-04 | 长安大学 | Asphalt modifier and modified road asphalt prepared from asphalt modifier |
-
2016
- 2016-08-22 CN CN201610702849.2A patent/CN106317919A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103275497A (en) * | 2013-05-14 | 2013-09-04 | 长安大学 | Asphalt modifier and modified road asphalt prepared from asphalt modifier |
Non-Patent Citations (2)
| Title |
|---|
| 张求慧等: ""酸性催化剂对木材苯酚液化能力的影响"", 《北京林业大学学报》 * |
| 谢双平等: ""秸秆苯酚选择性液化研究"", 《生物质化学工程》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109735120A (en) * | 2018-11-15 | 2019-05-10 | 南京交通职业技术学院 | A kind of modification biological asphalt material and preparation method thereof and purposes |
| CN109957257A (en) * | 2019-03-15 | 2019-07-02 | 长安大学 | A kind of biomass asphalt modifier and the preparation method and application thereof |
| CN110183868A (en) * | 2019-06-24 | 2019-08-30 | 长安大学 | Application and sustainable modified pitch and preparation method of the Poplar Powder liquefaction products as sustainable asphalt modifier |
| CN110183868B (en) * | 2019-06-24 | 2021-11-19 | 长安大学 | Application of poplar powder liquefied product as sustainable asphalt modifier, sustainable modified asphalt and preparation method |
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