CN103472091A - Component level-based asphalt thermal decomposition behavior researching method - Google Patents
Component level-based asphalt thermal decomposition behavior researching method Download PDFInfo
- Publication number
- CN103472091A CN103472091A CN2013104413136A CN201310441313A CN103472091A CN 103472091 A CN103472091 A CN 103472091A CN 2013104413136 A CN2013104413136 A CN 2013104413136A CN 201310441313 A CN201310441313 A CN 201310441313A CN 103472091 A CN103472091 A CN 103472091A
- Authority
- CN
- China
- Prior art keywords
- pitch
- thermal decomposition
- component
- asphalt
- kinds
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The invention relates to a new method for researching the asphalt thermal decomposition behavior by deepening into the asphalt component level, belongs to the field of fire disaster safety and solves the problem that the current asphalt thermal decomposition behavior research is difficultly thorough. The method comprises the steps of: firstly, preparing component test samples, determining component content, testing the thermal decomposition property of asphalt and four components thereof by adopting differential scanning calorimetry-infrared spectroscopy technology, acquiring the thermal decomposition test data of all components in the asphalt, analyzing the thermal decomposition gradient distribution character of all the component and producing smoke ingredient and release rule; secondly, calculating the thermal analysis kinetic parameters of all the components according to the Arrhenius equation, and establishing a thermal decomposition kinetic model; finally, testing the microstructure, components and content of residues of the thermally-decomposed components by adopting a transmission electron microscope and aphotoelectron spectroscopy instrument, researching the thermal decomposition behavior of all the components in asphalt, and comparing with the asphalt test sample test results, and revealing the asphalt thermal decomposition mechanism. The method can fundamentally reveal the thermal decomposition behavior of asphalt under the high-temperature environment.
Description
Technical field
The present invention is a kind of new method that is deep into research pitch thermal decomposition behavior on the asphalt component level, belongs to the asphalt material technical field.
Background technology
In recent years, the fast development of highway in China communication, tunnel also obtains synchronized development as the highway important component part.Tunnel can be used for overcoming landform and elevation obstacle in mountainous region, improve linearly, shortens mileage, improves road speed, preserves the ecological environment etc.Therefore, be used widely in tunnel in highway engineering, and China has become one of country maximum, with the fastest developing speed of Tunnel Engineering in the world.Tunnel is to growing up future development, and the volume of traffic increases, and travel speed improves, and tunnel becomes the traffic hazard multi-happening section, and the fire failure rate caused thus is in rising trend, and tunnel is faced with severe fire safety evaluating problem.
Along with people, the tunnel road surface safe application performance require is improved and fire-retardant, press down the cigarette technical progress, bituminous pavement has become the development trend of tunnel road surface because of advantages such as its driving are comfortable, cling property good, noise is little, the construction period is short, easy to maintenance.But pitch is meeting thermal decomposition, burning under fire hazard environment, and discharges a large amount of poison gas and heat, this seriously hinders tunnel traffic, to trapped personnel escape and fire rescue, brings very big difficulty, causes a tremendous loss of lives.Therefore, the Thermal Decomposition Mechanism in hot environment of discussion asphalt material seems urgent day by day.
As everyone knows, pitch is very complicated hydro carbons and the potpourri of non-hydrocarbons.Utilize selective dissolution or the absorption on different adsorbents of pitch in different solvents, be separated into several chemistry, physical property is similar, and with its colloform texture character, pavement performance, the group of certain relation is arranged, these groups just are called the component of pitch.Four component method that at present pitch forms in partition method have become U.S. ASTM and domestic standard test method, this method by pitch be divided into saturated minute, fragrance minute, four kinds of components of resin and asphalt, as Fig. 1.
Saturated minute by straight chain hydrocarbon, chain fatty belong to hydrocarbon, alkyl cyclic hydrocarbon and and some alkyl aromaticss form, be a kind of nonpolar thick shape oils, be straw or white.Mean molecular weight is similar to fragrance minute, and its composition comprises the saturate of wax and non-wax, comparatively responsive to temperature, accounts for 5%～20% in pitch.Fragrance minute is that the naphthenic aromatic compounds of lowest molecular weight forms in pitch, and it is the dispersion medium of peptized asphaltenes.Fragrance minute accounts for 20%～50% in pitch, is dark-brown thick liquid.Average relative molecular mass is 300～2000.Fragrance minute is comprised of nonpolar carbochain, and wherein unsaturation member ring systems is preponderated, and other macromolecule hydro carbons is had to very strong dissolving power.In addition, fragrance minute and saturated minute as oil content, mainly make colloid-bituminous matter soften (plasticizing) in pitch, play a part lubricated and solvent, and the maintenance of pitch colloidal dispersion is stablized.Oil content is more responsive to temperature, and its content is more, and the softening point of pitch is lower, and pen. is larger, and denseness reduces.
Colloid is dark brown solid or the semisolid that is dissolved in normal heptane, mainly carbon and hydrogen, consists of, and also has a small amount of nitrogen, sulphur, oxygen.Relative molecular weight is between 1000～50000, and particle diameter is 1～5nm.Colloid is bitum diffusant or peptizator, and one of characteristics of colloid are exactly poor chemical stability, and under the impact of adsorbent, heating is easy to oxidative condensation when having air, sunlight to exist slightly, partly becomes bituminous matter.Bituminous matter also has some nitrogen, sulphur, oxygen except containing carbon and hydrogen, there is no fixing fusing point, during heating, normally first expands, and when heating-up temperature arrives more than 300 ℃, decomposes and generates gas and coke.Relative molecular mass is between 1000～100000, and particle diameter is 5～30nm.It is that complicated fragrance divides material, and very strong polarity is arranged.Asphalt content is about 5%～25% in most of pitch.
Because scene of fire is not reproducible, the present invention adopts heat analysis method to study the asphalt material thermal decomposition behavior.It is under temperature programmed control that heat is analyzed, and utilizes a class technology of the relation of the physical property of thermal analyzer measurement of species and temperature.Wherein, differential scanning calorimetry (DSC) is exactly a kind of thermal analysis system, under programed temperature, measures the difference power of sample and reference substance and the relation of temperature of being input to.The curve that differential scanning calorimeter is recorded to claims the DSC curve, it is with the speed of sample neither endothermic nor exothermic, be that rate of heat flow dH/dt (unit milli Jiao/second) is ordinate, take temperature T or time t is horizontal ordinate, can measure various materials in parameters such as the specific heat capacity of thermal decomposition process, reaction heat, the heat of transformation, phasor, reaction rate, crystalline rate, crystallinity, sample purities.This method serviceability temperature wide ranges, resolution is high, sample dosage is few.Be applicable to inorganics, organic compound and Pharmaceutical Analysis.
But differential scanning calorimetry is still very limited to the understanding of the release characteristics that in the pitch thermal decomposition process, gaseous volatilization divides.For deep announcement pitch Thermal Decomposition Mechanism, the present invention adopts differential scanning calorimetry-Fourier transform infrared spectroscopy (DSC-FTIR) coupling technique, this technology is a kind of important tests method of research material thermal stability and thermal decomposition process, can divide the gaseous volatilization discharged in the pitch thermal decomposition process and carry out on-line analysis fast, understand the composition of the volatile matter of pitch thermal decomposition process generation.Visible, the advantage of DSC-FTIR maximum is that it can carry out simultaneously on-line analysis of polycomponent, and the thermal decomposition of Real-Time Monitoring pitch produces the Changing Pattern of smoke components, deeply discloses the pitch thermal decomposition behavior.
The thermal decomposition process of pitch is very complicated, and it is comprised of series of parallel and continuous reaction, and thermal decomposition and thermal polycondensation reaction mainly occur.Because the material in each component in pitch has similar physicochemical property, show similar Chemical Kinetics characteristic.Oil content is the light component in pitch, is molecule the most active in pyrolysis, so it at first decomposition reaction and polycondensation reaction occur, and generates the flammable volatile matter of little molecule and colloid; Colloid is the intermediate component of pitch, is transitional reaction molecular, and reactivity, inferior to oil content, generates the flammable volatile matter of little molecule and bituminous matter after burning; Bituminous matter is the heavy constituent in pitch, presents larger inertia in pyrolytic process.According to the route of oil content → colloid → bituminous matter → coke, the direction to heaviness transforms the pitch thermal decomposition process.But owing to thering is different molecular structures, make their Thermal Analysis Kinetics parameter different between each component.
In addition, Arrhenius (Arrhenius) equation has reflected the temperature variant relation of chemical reaction rate constant.This equation is lnk=lnA-E/RT, and wherein k is rate constant, and R is molar gas constant, and T is thermodynamic temperature, and E is apparent activation energy, and A is pre-exponential factor.Accordingly formula do the experiment data lnk～1/T figure is a straight line, by slope, can obtain apparent activation energy Ea, by intercept, can obtain pre-exponential factor A.
At present, less for the research of pitch thermal decomposition behavior under hot environment, pitch is as a kind of charing type organic mixture of complicated component, and its thermal decomposition behavior is deep not enough.Domestic scholars has been carried out dsc analysis to pitch, point out that mass loss when pitch is heated mainly occurs in 250～530 ℃, and different pitches DSC curve shape is substantially similar, and the thermal change when measuring former state pitch state of aggregation and changing, estimated temperature stability and the high-temperature behavior of different pitches, proposed to using the pitch spontaneous ignition temperature, as defining bituminous pavement, the critical temperature of burning must occur.The combustion characteristics of pitch that had the researchist to pass through analysis of experiments, point out the bituminous pavement that substantially can not ignite when fire scale reaches lower than the 10MW scale; When fire scale reaches 50MW, bituminous pavement must burn.
The foreign study personnel, by the bituminous pavement combustion experiment, propose the pitch thermal decomposition starting temperature and are about 300 ℃, and the kindling point of bituminous pavement is between 480～530 ℃, and the flue gas toxity that burning is produced is studied.Point out the burning behavior of scene of fire bituminous pavement, comprise rate of heat release, flue gas generation etc., the bituminous pavement burning is that tunnel fire hazard process pitch is separated out the burning that flammable volatile matter causes.Have the scholar to adopt taper calorimeter simulation tunnel fire working, studied the thermal decomposition characteristic of dissimilar asphalt, result shows can burn at tunnel fire hazard process asphalt, and the exhaust gas volumn of rate of heat release, combustion residue and generation is different.
Visible, pitch Study of Thermal Decomposition Mechanism hypothesis pitch is single, uniform homogeneous blend at present, and the DSC curve obtained is all too rough, and whole piece DSC curve is regarded as to single statistics reaction, obtain unique kinetic parameter, covered some and contributed to the more deep essence of understanding the pitch thermal decomposition.Moreover be not deep on the aspect of asphalt component and studied, more do not inquire into each component kinetics of thermal decomposition capability gradient distribution characteristics of pitch, but the pitch thermal decomposition process is regarded as to an integral body, suppose that thermal decomposition process medium power mathematic(al) parameter is constant.
But, in fact pitch is that four kinds of components that physicochemical property are close mix, the temperature range difference of every kind of component thermal decomposition under hot environment, there is notable difference in each component thermal decomposition characteristic of pitch, each component thermal decomposition performance presents obvious gradient distribution, every kind of component makes their pyrolysis Kinetics Parameter different owing to having different molecular structures, set up the unified Thermal Analysis Kinetics equation of the overall situation, an overall thermal decomposition process can only be reflected, the thermal decomposition behavior of pitch can not be disclosed exactly.
Summary of the invention
(1) technical matters
The object of the invention is to provide a kind of new method based on research pitch thermal decomposition behavior on each component level of pitch, the method is calculated in conjunction with differential scanning calorimetry and theoretical formula, solve in current pitch thermal decomposition behavior research and have not deep enough problem, can disclose more deeply the Thermal Decomposition Mechanism of pitch under hot environment, for taking rational flame-retarded technology, provide scientific basis.
(2) technical scheme
In view of there is limitation in the research method that has at present the pitch thermal decomposition behavior now, the present invention is deep on the level of asphalt component, adopts shop experiment and theoretical formula to calculate the method combined, and discloses deeply the essence of the thermal decomposition behavior of pitch.At first, according to pitch chemistry constituent test, prepare respectively each component sample, and measure the content of each component of pitch; Then, adopt differential scanning calorimetry to obtain the test findings such as the DSC curve of each component thermal decomposition process of pitch, continuous infrared spectrum, charring rate, analyze composition and release rule that each component thermal decomposition gradient distribution character and each component thermal decomposition generate flue gas; Secondly, according to Arrhenius (Arrhenius) equation, calculate each component Thermal Analysis Kinetics parameter, set up each component kinetics of thermal decomposition model of pitch; Finally, residue heterogeneous microstructure, composition and content after employing transmission electron microscope, each component thermal decomposition of photoelectron spectrograph test pitch, each component Thermal Decomposition Mechanism of research pitch, and compare with pitch sample thermal decomposition result, thereby the pitch Thermal Decomposition Mechanism deeply explained.
(3) beneficial effect
Thermal decomposition process is normally controlled the key factor that fire occurs and develops, and the flammable volatile matter that the asphalt pyrolysis stage produces mixes with oxygen in atmosphere, when temperature reaches the burning that its kindling point can bring out pitch.Therefore, it is necessary understanding pitch thermal decomposition behavior characteristics.Adopt the research method provided by the invention can the Thermal Decomposition Mechanism of more deep announcement asphalt material under hot conditions, the thermal response dynamics of quantitative evaluation pitch thermal decomposition process, for taking suitable asphalt flame-retardant technology that important evidence is provided, to improving the bituminous pavement traffic safety, comfortable, endurance quality has important practical significance.And this method is simple to operate, highly sensitive, have fast, characteristics accurately and intuitively, carry out qualitative and quantitative analysis by the DSC curve, can obtain important information in relevant sample decomposable process and the reaction power mathematic(al) parameter of respective process.
The accompanying drawing explanation
Fig. 1 pitch four component structures form schematic diagram
Saturated minute 2-fragrance minute 3-colloid 4-bituminous matter of 1-
Embodiment
The present invention adopts shop experiment and theoretical formula to calculate the method combined, and provides based on disclosing the method for pitch thermal decomposition behavior on the asphalt component level, and concrete implementation step is as follows:
(1) the selected pitch sample that will test, according to existing " highway engineering pitch and Asphalt Mixture Experiment rule (JTGE20-2011) " medium pitch chemical composition test (T0618-1993) relevant regulations, prepare respectively saturated minute, fragrant minute, four kinds of component samples of resin and asphalt of pitch, and measure the content of each component;
(2) get respectively pitch and four kinds of each 20mg samples of component thereof, adopt DSC-FTIR synchronous analyzers test pitch and four kinds of component thermal decomposition performances thereof, heating rate is 10 ℃/min, rise to 750 ℃ from room temperature, the atmosphere flow is 100ml/min, obtain the test figures such as DSC, charring rate, continuous infrared spectrum, analyze pitch and four kinds of component thermal properties thereof;
(3) analyze pitch and four kinds of component heat decomposition temperature gradient distributions thereof, and utilize the DSC curve to calculate the Thermal Analysis Kinetics parameter of pitch and four kinds of components thereof according to Arrhenius (Arrhenius) equation, be activation energy and pre-exponential factor A, further the thermal decomposition characteristic of quantitative comparison pitch and four kinds of components thereof, set up respectively each component kinetics of thermal decomposition model of pitch;
(4) according to the continuous Fourier infrared spectrum that obtains, analyze the composition that produces flue gas in the pitch thermal decomposition process and the concentration variation tendency of (or temperature) in time, obtain the internal relation between flue gas release rule and pitch thermal decomposition.
(5) residue heterogeneous microstructure, composition and content after employing transmission electron microscope, each component thermal decomposition of photoelectron spectrograph test pitch, understand each component thermal decomposition behavior of pitch, with pitch sample thermal decomposition result, compare, and, in conjunction with continuous fourier infrared spectrum row atlas analysis result, deeply disclose the pitch Thermal Decomposition Mechanism.
Claims (1)
1. one kind is deep into the new method of studying the pitch thermal decomposition behavior on the asphalt component level, it is characterized in that the concrete steps of the method are as follows:
(1) the selected pitch sample that will test, according to existing " highway engineering pitch and Asphalt Mixture Experiment rule (JTGE20-2011) " medium pitch chemical composition test (T0618-1993) relevant regulations, prepare respectively saturated minute, fragrant minute, four kinds of component samples of resin and asphalt of pitch, and measure the content of each component;
(2) get respectively pitch and four kinds of each 20mg samples of component thereof, adopt DSC-FTIR synchronous analyzers test pitch and four kinds of component thermal decomposition performances thereof, heating rate is 10 ℃/min, rise to 750 ℃ from room temperature, the atmosphere flow is 100ml/min, obtain the test figures such as DSC, charring rate, continuous infrared spectrum, analyze pitch and four kinds of component thermal properties thereof;
(3) analyze pitch and four kinds of component heat decomposition temperature gradient distributions thereof, and utilize the DSC curve to calculate the Thermal Analysis Kinetics parameter of pitch and four kinds of components thereof according to Arrhenius (Arrhenius) equation, be activation energy and pre-exponential factor A, further the thermal decomposition characteristic of quantitative comparison pitch and four kinds of components thereof, set up respectively each component kinetics of thermal decomposition model of pitch;
(4) according to the continuous Fourier infrared spectrum that obtains, analyze the composition that produces flue gas in the pitch thermal decomposition process and the concentration variation tendency of (or temperature) in time, obtain the internal relation between flue gas release rule and pitch thermal decomposition.
(5) residue heterogeneous microstructure, composition and content after employing transmission electron microscope, each component thermal decomposition of photoelectron spectrograph test pitch, understand each component thermal decomposition behavior of pitch, with pitch sample thermal decomposition result, compare, and, in conjunction with continuous fourier infrared spectrum row atlas analysis result, deeply disclose the pitch Thermal Decomposition Mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310441313.6A CN103472091B (en) | 2013-09-26 | 2013-09-26 | A kind of based on the pitch thermal decomposition behavior research method on component level |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310441313.6A CN103472091B (en) | 2013-09-26 | 2013-09-26 | A kind of based on the pitch thermal decomposition behavior research method on component level |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103472091A true CN103472091A (en) | 2013-12-25 |
| CN103472091B CN103472091B (en) | 2015-11-25 |
Family
ID=49797030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310441313.6A Expired - Fee Related CN103472091B (en) | 2013-09-26 | 2013-09-26 | A kind of based on the pitch thermal decomposition behavior research method on component level |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103472091B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104535608A (en) * | 2014-12-15 | 2015-04-22 | 常州大学 | Method for rapidly evaluating activity of catalyst for cyclic ester ring opening polymerization in industrial production process |
| CN104899351A (en) * | 2015-04-23 | 2015-09-09 | 南京林业大学 | Temperature field analysis method of bituminous mixture test piece on the basis of discrete element simulation |
| CN105510374A (en) * | 2015-12-08 | 2016-04-20 | 东南大学 | Determination method of asphalt fume in asphalt heating and spontaneous combustion process |
| CN106442950A (en) * | 2016-09-14 | 2017-02-22 | 南京林业大学 | Flame retardation and smoke suppression scheme designing method in whole thermal decomposition process of tunnel asphalt pavement |
| CN106596610A (en) * | 2016-12-19 | 2017-04-26 | 东南大学 | Test method for determining new and old asphalt dissolution index of hot recycled asphalt mixture |
| CN107365431A (en) * | 2017-08-23 | 2017-11-21 | 南京林业大学 | Compound age resister preparation method based on pitch each component thermo-oxidative ageing |
| CN107421844A (en) * | 2017-08-23 | 2017-12-01 | 南京林业大学 | Based on pitch each component short ageing analogy method associated with heat analysis-infrared |
| CN107576587A (en) * | 2017-08-23 | 2018-01-12 | 南京林业大学 | Based on the dynamic (dynamical) ageing of asphalt performance prediction method of isothermal analysis |
| CN109060880A (en) * | 2018-08-23 | 2018-12-21 | 南京林业大学 | A kind of flame retardant efficiency of asphalt evaluation method based on Thermal Analysis Kinetics parameter |
| CN109060878A (en) * | 2018-08-22 | 2018-12-21 | 南京林业大学 | Asphalt component Evaluation of Thermal Stability method based on kinetics of combustion parameter |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103293079A (en) * | 2013-06-28 | 2013-09-11 | 南京林业大学 | Method for evaluating flame retardant efficiency of asphalt |
-
2013
- 2013-09-26 CN CN201310441313.6A patent/CN103472091B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103293079A (en) * | 2013-06-28 | 2013-09-11 | 南京林业大学 | Method for evaluating flame retardant efficiency of asphalt |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104535608A (en) * | 2014-12-15 | 2015-04-22 | 常州大学 | Method for rapidly evaluating activity of catalyst for cyclic ester ring opening polymerization in industrial production process |
| CN104899351A (en) * | 2015-04-23 | 2015-09-09 | 南京林业大学 | Temperature field analysis method of bituminous mixture test piece on the basis of discrete element simulation |
| CN104899351B (en) * | 2015-04-23 | 2017-12-12 | 南京林业大学 | Bitumen mixture specimen temperature field analysis method based on discrete element simulation |
| CN105510374A (en) * | 2015-12-08 | 2016-04-20 | 东南大学 | Determination method of asphalt fume in asphalt heating and spontaneous combustion process |
| CN106442950A (en) * | 2016-09-14 | 2017-02-22 | 南京林业大学 | Flame retardation and smoke suppression scheme designing method in whole thermal decomposition process of tunnel asphalt pavement |
| CN106596610A (en) * | 2016-12-19 | 2017-04-26 | 东南大学 | Test method for determining new and old asphalt dissolution index of hot recycled asphalt mixture |
| CN107365431A (en) * | 2017-08-23 | 2017-11-21 | 南京林业大学 | Compound age resister preparation method based on pitch each component thermo-oxidative ageing |
| CN107421844A (en) * | 2017-08-23 | 2017-12-01 | 南京林业大学 | Based on pitch each component short ageing analogy method associated with heat analysis-infrared |
| CN107576587A (en) * | 2017-08-23 | 2018-01-12 | 南京林业大学 | Based on the dynamic (dynamical) ageing of asphalt performance prediction method of isothermal analysis |
| CN107365431B (en) * | 2017-08-23 | 2019-08-06 | 南京林业大学 | Compound age resister preparation method based on pitch each component thermo-oxidative ageing |
| CN109060878A (en) * | 2018-08-22 | 2018-12-21 | 南京林业大学 | Asphalt component Evaluation of Thermal Stability method based on kinetics of combustion parameter |
| CN109060880A (en) * | 2018-08-23 | 2018-12-21 | 南京林业大学 | A kind of flame retardant efficiency of asphalt evaluation method based on Thermal Analysis Kinetics parameter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103472091B (en) | 2015-11-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103472091B (en) | A kind of based on the pitch thermal decomposition behavior research method on component level | |
| CN103499511A (en) | Asphalt combustion process predicting method based on multistage thermal analysis kinetics models | |
| Koivisto et al. | Systematic study of the effect of the hydroxyl functional group in alcohol molecules on compression ignition and exhaust gas emissions | |
| Desgroux et al. | Study of the formation of soot and its precursors in flames using optical diagnostics | |
| Murugan et al. | A comparative study on the performance, emission and combustion studies of a DI diesel engine using distilled tyre pyrolysis oil–diesel blends | |
| Martínez et al. | Performance and emissions of an automotive diesel engine using a tire pyrolysis liquid blend | |
| Lemaire et al. | Effect of ethanol addition in gasoline and gasoline–surrogate on soot formation in turbulent spray flames | |
| CN103471956A (en) | Method for predicting pyrolysis process of environment-friendly flame-retarding asphalt | |
| Kök | Recent developments in the application of thermal analysis techniques in fossil fuels | |
| Cheung et al. | Experimental investigation of regulated and unregulated emissions from a diesel engine fueled with ultralow-sulfur diesel fuel blended with ethanol and dodecanol | |
| Hernandez et al. | Selection of a diesel fuel surrogate for the prediction of auto-ignition under HCCI engine conditions | |
| Ferraro et al. | Experimental and numerical study on the effect of oxymethylene ether-3 (OME3) on soot particle formation | |
| Vershinina et al. | The ignition parameters of the coal-water slurry droplets at the different methods of injection into the hot oxidant flow | |
| Martínez et al. | Potential for using a tire pyrolysis liquid-diesel fuel blend in a light duty engine under transient operation | |
| Khateeb et al. | Influence of asphaltene concentration on the combustion of a heavy fuel oil droplet | |
| Pietrogrande et al. | Characteristics and major sources of carbonaceous aerosols in PM2. 5 in Emilia Romagna Region (Northern Italy) from four-year observations | |
| Venu et al. | Analysis of particle size diameter (PSD), mass fraction burnt (MFB) and particulate number (PN) emissions in a diesel engine powered by diesel/biodiesel/n-amyl alcohol blends | |
| CN105510374A (en) | Determination method of asphalt fume in asphalt heating and spontaneous combustion process | |
| Kholghy | The evolution of soot morphology in laminar co-flow diffusion flames of the surrogates for jet A-1 and a synthetic kerosene | |
| Han et al. | Existence and formation pathways of high-and low-maturity elemental carbon from solid fuel combustion by a time-resolved study | |
| Xia et al. | Suppressive effects of composite flame retardant on smoke release, combustion soot and residue constituents of asphalt mixture | |
| Miersch et al. | Composition of carbonaceous fine particulate emissions of a flexible fuel DISI engine under high velocity and municipal conditions | |
| Wang et al. | Effect of heating history on the emission of volatile organic compounds from asphalt materials | |
| Liu et al. | Soot particles formed by n-heptane and n-heptane/oxymethylene ether-3 in an inverse diffusion flame: A comparative analysis of chemical features | |
| Cenker | Imaging measurements of soot particle size and soot volume fraction with laser-induced incandescence at Diesel engine conditions |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20131225 Assignee: Nanjing Shangdu Highway Maintenance Technology Co., Ltd. Assignor: Nanjing Forestry University Contract record no.: 2018320000316 Denomination of invention: Component level-based asphalt thermal decomposition behavior researching method Granted publication date: 20151125 License type: Common License Record date: 20181114 Application publication date: 20131225 Assignee: GANSU CHANGHENG HIGHWAY MAINTENANCE TECHNOLOGY CO., LTD. Assignor: Nanjing Forestry University Contract record no.: 2018320000317 Denomination of invention: Component level-based asphalt thermal decomposition behavior researching method Granted publication date: 20151125 License type: Common License Record date: 20181114 |
|
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20131225 Assignee: Jiangsu Dingzhou Transportation Technology Co., Ltd Assignor: Nanjing Forestry University Contract record no.: X2019320000275 Denomination of invention: Component level-based asphalt thermal decomposition behavior researching method Granted publication date: 20151125 License type: Common License Record date: 20191118 |
|
| EE01 | Entry into force of recordation of patent licensing contract | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151125 Termination date: 20200926 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |