CN110482909A - High heat conducting nano carbon fiber modifying asphalt preparation method - Google Patents

High heat conducting nano carbon fiber modifying asphalt preparation method Download PDF

Info

Publication number
CN110482909A
CN110482909A CN201910756069.XA CN201910756069A CN110482909A CN 110482909 A CN110482909 A CN 110482909A CN 201910756069 A CN201910756069 A CN 201910756069A CN 110482909 A CN110482909 A CN 110482909A
Authority
CN
China
Prior art keywords
heat conducting
high heat
carbon fiber
conducting nano
asphalt
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.)
Pending
Application number
CN201910756069.XA
Other languages
Chinese (zh)
Inventor
许涛
范素颖
李池璇
黄凯健
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing Forestry University
Original Assignee
Nanjing Forestry University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nanjing Forestry University filed Critical Nanjing Forestry University
Priority to CN201910756069.XA priority Critical patent/CN110482909A/en
Publication of CN110482909A publication Critical patent/CN110482909A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
    • C04B26/02—Macromolecular compounds
    • C04B26/26—Bituminous materials, e.g. tar, pitch
    • 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
    • C08K7/00—Use of ingredients characterised by shape
    • C08K7/02—Fibres or whiskers
    • C08K7/04—Fibres or whiskers inorganic
    • C08K7/06—Elements
    • 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
    • C08K9/00—Use of pretreated ingredients
    • C08K9/02—Ingredients treated with inorganic substances
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
    • C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/011—Nanostructured additives

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Structures (AREA)

Abstract

The present invention is a kind of high heat conducting nano carbon fiber modifying asphalt preparation method, belong to asphalt pavement material preparation technical field, solves the problems, such as currently without high heat conducting nano carbon fiber as modifying agent, without high heat conducting nano carbon fiber modifying asphalt preparation method.The present invention uses catalytic pyrolysis method to obtain carbon nano-fiber first, to obtained high heat conducting nano carbon fiber after its Surface Oxidation Modification and modification, then modified pitch is prepared as modifying agent, again with gather materials, miberal powder etc. mixes and stirs obtained high heat conducting nano carbon fiber modifying asphalt, then mixture is shaped to by test specimen using wheel milling process, prism test specimen is cut to after placing 48 hours at room temperature, the thermal coefficient that the prism test specimen after drying is finally measured using quick conductive coefficient measuring instrument, determines the optimum mix amount of high heat conducting nano carbon fiber.High heat conducting nano carbon fibre asphalt mixture prepared by the present invention can be used for the road construction of cold district, improve bituminous pavement heat transfer efficiency.

Description

High heat conducting nano carbon fiber modifying asphalt preparation method
Technical field
The present invention is a kind of high heat conducting nano carbon fiber modifying asphalt preparation method, belongs to asphalt pavement material system Standby technical field.
Background technique
One of an important factor for quality of a large amount of investigation and studies have shown that pavement behavior is influence road traffic, road Function of surface is the basis of operation of ensuring traffic safety, and the quality of winter asphalt pavement condition is even more one of focal point.China Vast in territory, wherein about 43% national territorial area is located at Han Qu, easily there are accumulated snow ice formation issues in winter, and accumulated snow icing can make It reduced at pavement skid resistance ability, influence road safety, to the normal operation order and people's life's wealth of national economy It produces safety and causes huge hidden danger.Currently, in order to reduce the traffic accident that accumulated snow icing causes, active deicing common at present Technology mainly uses the chemical modes such as low freezing point/phase transformation, and carries out snow melt using energy transform modes such as electricity, heat.Low freezing point/ Phase transformation class ground surface material easily induces " secondary icing " when temperature is lower since its latent heat of phase change is low, and road pavement operational safety produces Raw certain threat.Snow melt is actively carried out using energy transform modes such as electricity, heat can be under lower temperature conditions still with higher Snow melt efficiency, become the option that researcher extremely favors.Traditional bituminous pavement is generally with graphite, carbon black, steel fibre, carbon The materials such as fiber, steel slag improve heating conduction as filler, but that there are filler volumes is larger, easily to asphalt road property The problems such as capable of having an adverse effect, to constrain its development.
In recent years, along with the development of material science, nano material is developed in field of civil engineering, including carbon is received Mitron, carbon nano-fiber etc..There are some scholars to consider to add this kind of heating conduction of carbon nano-fiber when preparing asphalt Excellent material improves the heating conduction of asphalt, has obtained certain achievement.Carbon nano-fiber has higher intensity And Young's modulus, preferable conductive, thermally conductive, thermal stability and obvious surface size effect.Carbon nano-fiber slender construction, So that its heat conductivity be parallel to axis with perpendicular to showing very big difference on axis direction.It is parallel to axis direction Heat conductivity is excellent, and very small perpendicular to pyroconductivity on axis direction, and researchers utilize this feature, by nano-sized carbon Fiber is properly arranged to obtain the raising of a direction heating conduction.In addition, carbon nano-fiber is one-dimensional nano structure, Big draw ratio makes it that can more form thermally conductive network chain in asphalt, more promotes the contact between microfibre, makes fiber It is aligned in direction of heat flow, thermal coefficient increases, and improves asphalt heating conduction.
But research mainly realizes bituminous pavement deicing or snow melting using materials such as carbon nano-fiber, carbon nanotubes at present, The method that bituminous pavement snow melt deicing efficiency is not improved using high heat conducting nano carbon fiber, more without reference to high heat conducting nano The report of carbon fiber modifying asphalt preparation method.In order to further increase the heating conduction of carbon nano-fiber, people couple Influence factor is studied, and finds carbon nano-fiber thermal conductivity highest made from gas phase flow growth method.In addition, researchers are also It was found that being surface modified to carbon nano-fiber and modified, the heating conduction of carbon nano-fiber be will further improve, and obtain height It is mixed to help to improve pitch using high heat conducting nano carbon fiber as applying filler in asphalt for heat conducting nano carbon fiber The heating conduction for closing material, makes bituminous pavement faster realize deicing or snow melting.
Therefore, the present invention heating conduction excellent according to carbon nano-fiber prepares high heat conducting nano carbon fiber as pitch Mixture filler makes full use of its excellent heating conduction, is improved the heating conduction of asphalt, improves asphalt road Face deicing or snow melting efficiency guarantees road surface antiskid function, thus ensure people's safety, maintenance trip order.
Summary of the invention
(1) technical problem
It is an object of the present invention to provide a kind of high heat conducting nano carbon fiber modifying asphalt preparation method, solution does not have at present There is high heat conducting nano carbon fiber as modifying agent, asking without high heat conducting nano carbon fiber modifying asphalt preparation method Topic improves asphalt heating conduction to prepare high heat conducting nano carbon fibre asphalt mixture.
(2) technical solution
In order to solve to drip as modifying agent, without high heat conducting nano carbon fiber modifying currently without high heat conducting nano carbon fiber The problem of blueness mixing preparation method for material.The present invention uses catalytic pyrolysis method first, and catalytic growth obtains carbon nano-fiber, then right It carries out Surface Oxidation Modification and surface modification and obtains high heat conducting nano carbon fiber, then using high heat conducting nano carbon fiber as changing Property agent prepares asphalt, to improve the heating conduction of modified asphalt mixture, provides a kind of high heat conducting nano carbon fiber and changes Property asphalt preparation method.Technical solution of the present invention is as follows: carbon nano-fiber is made using catalytic pyrolysis method, selects H2O2 Solution, HNO3Solution utilizes Al to its Surface Oxidation Modification2O3High heat conducting nano is made in carbon nano-fiber after modification Then modified pitch is made using high heat conducting nano carbon fiber as modifying agent in carbon fiber, then with gather materials, miberal powder etc. mixes and stirs and height is made Heat conducting nano carbon fiber modifying asphalt, then by wheel milling process shaping test piece, and will be at room temperature after placement 48 hours Test specimen is cut into the prism test specimen of smooth surface, finally utilizes quick conductive coefficient measuring instrument measurement prism test specimen Thermal coefficient further increases bituminous pavement heat transfer efficiency to determine the optimum mix amount of high heat conducting nano carbon fiber, guarantees winter People's safety.
(3) beneficial effect
China has a vast territory, wherein about 43% national territorial area is located at Han Qu, winter accumulated snow icing easily occurs and asks Topic, accumulated snow icing will cause pavement skid resistance anergy, the especially biggish section of urban road longitudinal slope, such as overhead circle up and down Road influences road safety, to the normal operation order of national economy often because accumulated snow, thin ice influence normal vehicle operation Sequence and life and property safety of people cause huge hidden danger.There is statistics to show, China has 30% traffic accident to be in winter Cause due to road snow mantle accumulated ice.The present invention provides a kind of preparation side of high heat conducting nano carbon fiber modifying asphalt Method determines the optimum mix amount of high heat conducting nano carbon fiber, the high heat conducting nano carbon fiber of preparation according to the thermal coefficient of mixture Modified asphalt mixture can be used for the asphalt pavement construction of cold district, to bituminous pavement heat transfer efficiency is improved, guarantee link table Face function guarantees that safety maintenance trip order is of great practical significance.
Specific embodiment
The present invention provides a kind of high heat conducting nano carbon fiber modifying asphalt preparation method, and specific implementation step is such as Under:
(1) catalytic pyrolysis method is used, using benzene as carbon source, using ferrocene as catalyst precursor, using hydrogen as carrier gas, sulfur-bearing Organic compound thiophene is growth promoter, and catalytic growth obtains carbon nano-fiber at 1150 DEG C~1180 DEG C, then selects H2O2 Solution, HNO3Solution carries out Surface Oxidation Modification to carbon nano-fiber, and uses Al2O3It is surface modified, prepares high heat conducting nano Carbon fiber；
(2) appropriate high heat conducting nano carbon fiber is added in kerosene, uses ultrasound and high-speed shearing Mixer stirring 170 Minute, oil bath heating is carried out while agitating, and oil bath temperature is slowly increased to 150 DEG C makes kerosene evaporating completely, adds A certain amount of matrix pitch continues high shear agitation 1 hour, prepares finely dispersed high heat conducting nano fiber and modified asphalt；
(3) using the high heat conducting nano fiber and modified asphalt of preparation, using particulate formula gradation, granite coarse aggregate and thin collection Material, limestone mineral powder, volume are that 20% graphite powder of asphalt content replaces part miberal powder, prepare the drip of high heat conducting nano fibre modification Green mixture；
(4) asphalt is shaped to by 300mm × 300mm × 50mm test specimen using wheel milling process, places 48 at room temperature It is cut into 50mm × 50mm × 100mm smooth surface prism test specimen after hour, applies quick conductive system after drying Number analyzer carries out the test of thermal coefficient to test specimen, and under conditions of guaranteeing the pavement performance of asphalt, adjustment height is led The additive amount of hot carbon nano-fiber makes asphalt have better heating conduction to determine its optimum mix amount.

Claims (1)

1. a kind of high heat conducting nano fiber and modified asphalt mixing preparation method for material, it is characterised in that the specific steps of this method are such as Under:
(1) catalytic pyrolysis method is used, using benzene as carbon source, using ferrocene as catalyst precursor, using hydrogen as carrier gas, sulfur-bearing is organic Compound thiophene is growth promoter, and catalytic growth obtains carbon nano-fiber at 1150 DEG C~1180 DEG C, then selects H2O2It is molten Liquid, HNO3Solution carries out Surface Oxidation Modification to carbon nano-fiber, and uses Al2O3It is surface modified, prepares high heat conducting nano carbon Fiber；
(2) appropriate high heat conducting nano carbon fiber is added in kerosene, stirs 170 points using ultrasound and high-speed shearing Mixer Clock carries out oil bath heating while agitating, and oil bath temperature is slowly increased to 150 DEG C makes kerosene evaporating completely, adds one Quantitative matrix pitch, continues high shear agitation 1 hour, prepares finely dispersed high heat conducting nano fiber and modified asphalt；
(3) using preparation high heat conducting nano fiber and modified asphalt, using particulate formula gradation, granite coarse aggregate and fine aggregate, Limestone mineral powder, volume are that 20% graphite powder of asphalt content replaces part miberal powder, prepare high heat conducting nano fiber and modified asphalt Mixture；
(4) asphalt is shaped to by 300mm × 300mm × 50mm test specimen using wheel milling process, placed 48 hours at room temperature It is cut into 50mm × 50mm × 100mm smooth surface prism test specimen afterwards, is surveyed after drying using quick conductive coefficient Determine the test that instrument carries out thermal coefficient to test specimen, under conditions of guaranteeing the pavement performance of asphalt, adjustment high thermal conductivity is received The additive amount of rice carbon fiber makes asphalt have better heating conduction to determine its optimum mix amount.
CN201910756069.XA 2019-08-13 2019-08-13 High heat conducting nano carbon fiber modifying asphalt preparation method Pending CN110482909A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910756069.XA CN110482909A (en) 2019-08-13 2019-08-13 High heat conducting nano carbon fiber modifying asphalt preparation method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910756069.XA CN110482909A (en) 2019-08-13 2019-08-13 High heat conducting nano carbon fiber modifying asphalt preparation method

Publications (1)

Publication Number Publication Date
CN110482909A true CN110482909A (en) 2019-11-22

Family

ID=68551191

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910756069.XA Pending CN110482909A (en) 2019-08-13 2019-08-13 High heat conducting nano carbon fiber modifying asphalt preparation method

Country Status (1)

Country Link
CN (1) CN110482909A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110791265A (en) * 2019-11-26 2020-02-14 陕西博世威科技有限责任公司 Preparation method of carbon fiber toughening agent for oil well cement
CN111978747A (en) * 2020-08-24 2020-11-24 南京林业大学 Method for improving dispersibility of carbon nanofibers in asphalt
CN112080984A (en) * 2020-09-04 2020-12-15 南京林业大学 Asphalt pavement snow and ice removing method based on nano carbon fiber wave absorption performance
CN112552699A (en) * 2020-12-08 2021-03-26 何理 Carbon fiber-based high-thermal-conductivity modified asphalt mixture and preparation method thereof
CN114477856A (en) * 2022-02-28 2022-05-13 南京林业大学 Design method of conductive asphalt mixture based on carbon black and carbon fibers
CN115926484A (en) * 2022-12-14 2023-04-07 湖北工业大学 Preparation method of high-viscosity graphite tailing modified asphalt
CN115926482A (en) * 2022-11-28 2023-04-07 张晓东 High-thermal-conductivity asphalt mixture and preparation method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1403401A (en) * 2002-10-11 2003-03-19 武汉理工大学 Conducting asphalt concrete and its prepn process
US20060169180A1 (en) * 1990-06-19 2006-08-03 Dry Carolyn M Self-repairing, reinforced matrix materials
CN1903713A (en) * 2006-08-02 2007-01-31 太原理工大学 Method of preparing nano-carbon fiber using coal tar asphalt as raw material
CN102086537A (en) * 2010-04-12 2011-06-08 北京化工大学 Process and device for industrial production of carbon nanofiber
CN102329104A (en) * 2011-07-11 2012-01-25 江苏东交工程设计顾问有限公司 Three-phase composite conductive anti-freezing asphalt mixture and preparation method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060169180A1 (en) * 1990-06-19 2006-08-03 Dry Carolyn M Self-repairing, reinforced matrix materials
CN1403401A (en) * 2002-10-11 2003-03-19 武汉理工大学 Conducting asphalt concrete and its prepn process
CN1903713A (en) * 2006-08-02 2007-01-31 太原理工大学 Method of preparing nano-carbon fiber using coal tar asphalt as raw material
CN102086537A (en) * 2010-04-12 2011-06-08 北京化工大学 Process and device for industrial production of carbon nanofiber
CN102329104A (en) * 2011-07-11 2012-01-25 江苏东交工程设计顾问有限公司 Three-phase composite conductive anti-freezing asphalt mixture and preparation method thereof

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
张玉龙 等主编: "《纳米改性剂》", 31 January 2004, 国防工业出版社 *
朱美芳 等主编: "《纤维复合材料》", 31 December 2017, 中国铁道出版社 *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110791265A (en) * 2019-11-26 2020-02-14 陕西博世威科技有限责任公司 Preparation method of carbon fiber toughening agent for oil well cement
CN110791265B (en) * 2019-11-26 2021-10-01 四川盛年同缔实业有限公司 Preparation method of carbon fiber toughening agent for oil well cement
CN111978747A (en) * 2020-08-24 2020-11-24 南京林业大学 Method for improving dispersibility of carbon nanofibers in asphalt
CN112080984A (en) * 2020-09-04 2020-12-15 南京林业大学 Asphalt pavement snow and ice removing method based on nano carbon fiber wave absorption performance
CN112552699A (en) * 2020-12-08 2021-03-26 何理 Carbon fiber-based high-thermal-conductivity modified asphalt mixture and preparation method thereof
CN114477856A (en) * 2022-02-28 2022-05-13 南京林业大学 Design method of conductive asphalt mixture based on carbon black and carbon fibers
CN115926482A (en) * 2022-11-28 2023-04-07 张晓东 High-thermal-conductivity asphalt mixture and preparation method thereof
CN115926484A (en) * 2022-12-14 2023-04-07 湖北工业大学 Preparation method of high-viscosity graphite tailing modified asphalt
CN115926484B (en) * 2022-12-14 2024-02-02 湖北工业大学 Preparation method of high-viscosity graphite tailing modified asphalt

Similar Documents

Publication Publication Date Title
CN110482909A (en) High heat conducting nano carbon fiber modifying asphalt preparation method
CN101041744B (en) Bitumen modifier
CN106517894B (en) A kind of traffic phase-changing and temperature-regulating pitch composite material and preparation method
CN102515650B (en) Phase change thermoregulation cement pitch composition concrete and preparation method thereof
CN103508701B (en) A kind of composite phase-change cooling asphalt pavement material
CN101172810B (en) Method for producing conductive SMA mixture
CN105017786B (en) Polyethylene glycol is from snow melt composite phase-change material modified pitch and preparation method thereof
CN109231917A (en) A kind of cracking resistance seam impermeabilisation high durability concrete and preparation method thereof
CN103508702B (en) A kind of Cold-mix phase change type asphalt mixture for thermal energy storage
CN102031119A (en) Soil curing agent directly processing soil into surface layer of road
CN107473635A (en) Bituminous concrete and its preparation technology
CN109021598A (en) A kind of preparation method of hydrophobic anti-icing organic montmorillonite-SBS composite modified asphalt
CN110105778A (en) Nanocomposite modified pitch, preparation method and bituminous concrete
CN108558273A (en) A kind of electric heating bituminous concrete mixed with graphite and carbon fiber
CN108947328A (en) A kind of Steel slag permeable asphalt mixture based on the modified high-viscosity asphalt of shoddy
CN114108415B (en) Double-layer phase-change temperature-adjusting asphalt pavement structure
WO2023231618A1 (en) Method for harmless utilization of oil shale residue and retorted drilling oil residue
Sun et al. Research on maintenance equipment and maintenance technology of steel fiber modified asphalt pavement with microwave heating
CN103360773B (en) A kind of composite asphalt modifier and preparation method thereof and application
CN102676176A (en) Composite ionic soil curing agent and manufacturing method thereof
CN110272227A (en) Cement pitch combined type is from snow melt ground surface material and preparation method thereof
CN103275498B (en) Modified sulfur particle and its preparation method and application
Tan et al. Investigation on preparation and properties of carbon fiber graphite tailings conductive asphalt mixture: A new approach of graphite tailings application
CN106498825A (en) A kind of heat conduction SMA Proportion Design of Modified Asphalt Mixture optimization methods for being applied to snow melt road
CN103275497B (en) A kind of asphalt modifier and the modified pavement asphalt utilizing it to prepare

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20191122

WD01 Invention patent application deemed withdrawn after publication