WO2015100926A1 - 一种沥青混合料热固性改性添加剂、其制备方法及沥青混合料 - Google Patents

一种沥青混合料热固性改性添加剂、其制备方法及沥青混合料 Download PDF

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WO2015100926A1
WO2015100926A1 PCT/CN2014/078228 CN2014078228W WO2015100926A1 WO 2015100926 A1 WO2015100926 A1 WO 2015100926A1 CN 2014078228 W CN2014078228 W CN 2014078228W WO 2015100926 A1 WO2015100926 A1 WO 2015100926A1
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asphalt
asphalt mixture
additive
thermosetting
resin
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PCT/CN2014/078228
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English (en)
French (fr)
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曹东伟
张艳君
王仕峰
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交通运输部公路科学研究所
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Priority to US14/780,340 priority Critical patent/US10030146B2/en
Publication of WO2015100926A1 publication Critical patent/WO2015100926A1/zh

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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L95/00Compositions of bituminous materials, e.g. asphalt, tar, pitch
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G59/00Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
    • C08G59/18Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
    • C08G59/40Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
    • C08G59/50Amines
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/18Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24Acids; Salts thereof
    • C08K3/26Carbonates; Bicarbonates
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/34Silicon-containing compounds
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/34Silicon-containing compounds
    • C08K3/346Clay
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/34Silicon-containing compounds
    • C08K3/36Silica
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00Use of organic ingredients
    • C08K5/04Oxygen-containing compounds
    • C08K5/10Esters; Ether-esters
    • C08K5/101Esters; Ether-esters of monocarboxylic acids
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00Use of organic ingredients
    • C08K5/16Nitrogen-containing compounds
    • C08K5/20Carboxylic acid amides
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00Use of organic ingredients
    • C08K5/16Nitrogen-containing compounds
    • C08K5/315Compounds containing carbon-to-nitrogen triple bonds
    • C08K5/3155Dicyandiamide
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00Use of organic ingredients
    • C08K5/16Nitrogen-containing compounds
    • C08K5/34Heterocyclic compounds having nitrogen in the ring
    • C08K5/3442Heterocyclic compounds having nitrogen in the ring having two nitrogen atoms in the ring
    • C08K5/3445Five-membered rings
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00Use of organic ingredients
    • C08K5/16Nitrogen-containing compounds
    • C08K5/34Heterocyclic compounds having nitrogen in the ring
    • C08K5/3467Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
    • C08K5/3477Six-membered rings
    • C08K5/3492Triazines
    • C08K5/34924Triazines containing cyanurate groups; Tautomers thereof
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L33/00Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • C08L33/04Homopolymers or copolymers of esters
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L63/00Compositions of epoxy resins; Compositions of derivatives of epoxy resins
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L75/00Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L75/00Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
    • C08L75/04Polyurethanes
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C23/00Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C7/00Coherent pavings made in situ
    • E01C7/08Coherent pavings made in situ made of road-metal and binders
    • E01C7/30Coherent pavings made in situ made of road-metal and binders of road-metal and other binders, e.g. synthetic material, i.e. resin
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D22/00Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/18Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24Acids; Salts thereof
    • C08K3/26Carbonates; Bicarbonates
    • C08K2003/265Calcium, strontium or barium carbonate
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2555/00Characteristics of bituminous mixtures
    • C08L2555/20Mixtures of bitumen and aggregate defined by their production temperatures, e.g. production of asphalt for road or pavement applications
    • C08L2555/22Asphalt produced above 140°C, e.g. hot melt asphalt
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2555/00Characteristics of bituminous mixtures
    • C08L2555/40Mixtures based upon bitumen or asphalt containing functional additives
    • C08L2555/50Inorganic non-macromolecular ingredients
    • C08L2555/52Aggregate, e.g. crushed stone, sand, gravel or cement
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2555/00Characteristics of bituminous mixtures
    • C08L2555/40Mixtures based upon bitumen or asphalt containing functional additives
    • C08L2555/80Macromolecular constituents

Definitions

  • the invention belongs to the field of road engineering, and particularly relates to an asphalt mixture thermosetting modification additive, a preparation method thereof and an asphalt mixture prepared by using the modifier.
  • modified asphalts In order to improve the performance of asphalt and meet the quality requirements of engineering requirements, various modified asphalts have been prepared by blending and adding additives to meet the needs of the project. Although the promotion of modified asphalt has improved the performance of the pavement, it has not changed the thermoplasticity of the asphalt, so it is difficult to overcome the common problems of asphalt pavement.
  • thermosetting modified asphalt mixture is a material prepared by using a thermosetting resin and a certain grade of aggregate.
  • the thermosetting resin includes epoxy resin, polyurethane, phenolic resin, polyester, etc.
  • the thermosetting resin and the curing agent undergo a curing reaction to form a network crosslinked irreversible cured product, and the curing reaction causes the asphalt to pass from Thermoplastic conversion to thermosetting, so thermosetting modified asphalt has excellent physical and mechanical properties.
  • a certain stone is added to form a thermosetting modified asphalt mixture. Since the thermosetting resin can form high strength after curing, it is also called high-strength asphalt concrete material, which has high rigidity, good flexibility and good fatigue resistance. And durability, it is an ideal material for steel bridge deck pavement, pavement wear layer, and ultra-heavy traffic roads, and has broad application prospects.
  • thermosetting modification technology is epoxy asphalt mixture.
  • the traditional modification technology is wet modification technology, that is, the epoxy modified asphalt is prepared first, generally divided into two. a component, wherein the epoxy resin is the first component, the other additives such as asphalt and curing agent are used as the second component, and the two components are blended according to a certain ratio to form an epoxy resin modified asphalt, and then added to a certain amount.
  • the stone material produces an epoxy asphalt mixture. This method is not only complicated in process, but also because the asphalt is incompatible with the epoxy resin itself. If an epoxy resin and a curing agent are directly added to the asphalt, it is generally difficult to form a stable modified asphalt.
  • Chinese patent CN101255276A discloses an epoxy asphalt material for road bridge and a green preparation method thereof, which is modified to treat asphalt, and the reactive functional group of asphalt joint improves the compatibility of epoxy resin with asphalt, and makes itself It becomes a curing agent for epoxy resin, and then combines with curing agent and accelerator to form a comprehensive curing agent, and then mixes with epoxy resin to prepare modified asphalt.
  • Chinese patent CN1952012A discloses a thermosetting epoxy asphalt material which utilizes a special compatibilizer to improve the compatibility of epoxy resin and asphalt. The compatibilizer is complicated in preparation method, high in cost and difficult to industrialize, and is practically applied. The stability of the medium modified asphalt is difficult to control and the use process is complicated.
  • the object of the present invention is to provide an asphalt mixture thermosetting modification additive for the technical problems existing in the existing thermosetting modified asphalt.
  • the asphalt mixture thermosetting modification additive of the invention adopts a thermosetting dry modification technology, has a simple preparation method and can be continuously produced, and the prepared asphalt mixture has good stability, and is suitable for steel bridge decks, tunnels, airports, highways and battlements. The paving and repairing of the main road.
  • Another object of the present invention is to provide a process for preparing the asphalt mixture thermosetting modification additive.
  • a third object of the present invention is to propose an asphalt mixture prepared by using the modified additive.
  • An asphalt mixture thermosetting modification additive comprising: a raw material: a resin, a curing agent, a promoter, a leveling agent, a filler, an auxiliary agent, wherein the weight ratio of the raw materials is: resin 35-70, curing agent 1 -35, accelerator 0-2.5, leveling agent 0-6, filler 20-40, auxiliary 0-2.
  • the weight ratio of the raw materials: promoter 0-2.5, leveling agent 0-6, auxiliary agent 0-2 indicates that the promoter, leveling agent and auxiliary agent in the raw material can be selectively added. You can also choose not to join.
  • the auxiliary agent is a coupling agent or a plasticizer, preferably a coupling agent.
  • the coupling agent is a silane coupling agent or a titanate coupling agent, preferably a silane coupling agent.
  • the resin is one or more of an epoxy resin, a polyester resin, a phenol resin, and a polyurethane, and is preferably an epoxy resin.
  • the curing agent is an amine curing agent, an acid anhydride curing agent, a hydrazide curing agent, an imidazole curing agent, a hydroxyl terminated phenol resin, a polyester resin, an acrylic resin, a polyglycidyl ester, a hydroxyalkylamide, One or more of oxazolines.
  • the amine curing agent is one or more selected from the group consisting of dicyandiamide, triethylenetetramine, and m-phenylenediamine, and is preferably dicyandiamide.
  • the acid anhydride-based curing agent is one or more of methyltetrahydrophthalic anhydride, pyromellitic anhydride, phthalic anhydride, polysebacic anhydride, and tung oil anhydride.
  • the hydrazide-based curing agent is one or more selected from the group consisting of sebacic acid dihydrazide, adipic acid dihydrazide, and isophthalic acid dihydrazide, and is preferably azelaic acid dihydrazide.
  • the imidazole curing agent is one or more selected from the group consisting of imidazole, 2-methylimidazole, and 2-ethyl-4-methylimidazole, and is preferably 2-methylimidazole.
  • the polyglycidyl ester is one or more selected from the group consisting of triglycidyl isocyanurate, glycidyl methacrylate, and glycidyl dicarboxylate, and is preferably triglycidyl isocyanurate.
  • the hydroxyalkylamide is ruthenium, osmium, ⁇ ', ⁇ '-tetrakis[ ⁇ -hydroxyethyl]adipamide or ruthenium, osmium, ⁇ ', ⁇ , -tetrakis [ ⁇ -hydroxypropyl]
  • the adipamide is preferably ruthenium, osmium, iridium, osmium, tetrakis[ ⁇ -hydroxyethyl]adipamide.
  • the oxazoline is one or more selected from the group consisting of benzodiazoline, 2-ethyl-2-oxazoline, and 2,2,-bis(2-oxazoline), preferably Phenylene dioxazoline.
  • the accelerator is one or more of an imidazole accelerator, a tertiary amine accelerator, or a metal oxide, and is preferably an imidazole accelerator or a tertiary amine accelerator, and more preferably a tertiary amine accelerator. .
  • the imidazole accelerator is one or more selected from the group consisting of imidazole, 2-methylimidazole, and 2-ethyl-4-methylimidazole, and is preferably 2-methylimidazole.
  • the tertiary amine accelerator is one or more of benzyldimethylamine, 2,4,6-tris(dimethylaminomethyl)phenol (DMP-30), and NN-dimethylaniline. Species, preferably DMP-30.
  • the leveling agent is one or more of an acrylate, a silicone modified resin, a phenol resin, an amino resin, and a cellulose acetate butyrate, and is preferably an acrylate.
  • the filler is one or more of clay, talc, calcium carbonate, barium sulfate, and silica.
  • Another aspect of the present invention provides a method for preparing an asphalt mixture thermosetting modification additive, comprising the steps of:
  • the temperature of the extrusion treatment is 90-120 °C.
  • an asphalt mixture comprising: a raw material: an asphalt mixture thermosetting modification additive, a matrix asphalt, and a mineral material.
  • the weight ratio of the raw materials is: asphalt mixture thermosetting modified additive 1-5, matrix asphalt 2-8, mineral material 87-97.
  • the weight ratio of the raw materials is: asphalt mixture thermosetting modified additive 2-3, matrix asphalt 3-4, mineral material 94.
  • the asphalt mixture thermosetting modification additive is prepared according to the following steps; 1) mixing the resin, the curing agent, the accelerator, the leveling agent, the filler, and the auxiliary agent, and then adding to the extruder for extrusion treatment to form an extruded material;
  • the temperature of the extrusion treatment is from 90 to 120 °C.
  • the mineral material is composed of aggregate and mineral powder.
  • an asphalt mixture is applied to the paving and repairing of steel bridge decks, tunnels, airports, high-grade highways, and urban trunk roads.
  • a method for preparing an asphalt mixture includes the following steps:
  • the stirring temperature in the steps (1) - (3) is 130-210 ° C, and the stirring time is 10-600 s.
  • the asphalt mixture thermosetting modification additive proposed by the invention adopts a dry modification technology, and the use process is simple and reliable, and the prepared thermosetting modification additive is powdery, has a small particle diameter, and is easy to be dispersed in the asphalt mixture.
  • the asphalt mixture proposed by the invention is obtained by directly mixing the thermosetting modified additive with the mineral material and the asphalt, and does not undergo the step of preparing the modified asphalt, and the operation process is simple and can be continuously produced.
  • the asphalt mixture prepared by the method of the invention successfully avoids the compatibility and thermal stability problems of the modified asphalt prepared by the conventional method, and overcomes the thermal stability of the modified asphalt during long-distance transportation. Reduced and on-site thermal storage management is easy Problems such as segregation, thermal decomposition, and falling indicators have reduced production costs and energy conservation.
  • the asphalt mixture thermosetting modification additive prepared by the invention can be determined or adjusted by the construction unit according to the specific engineering condition, and the asphalt mixture prepared by using the thermosetting modification additive is suitable for the steel bridge deck. , paving and repairing of tunnels, airports, highways and urban trunk roads. detailed description
  • the extruder feed section temperature is 90 ° C
  • the discharge temperature is 120 ° C
  • the extruded material has a thickness of l mm.
  • the pulverization treatment is carried out to obtain a pulverized material having a particle size of lmm, which is a thermosetting modification additive of the asphalt mixture.
  • the extruder feed section temperature is 90 ° C
  • the discharge temperature is 120 ° C
  • the extruded material has a thickness of l mm.
  • the pulverization treatment is carried out to obtain a pulverized material having a particle size of lmm, which is a thermosetting modification additive of the asphalt mixture.
  • the extruder feed section temperature is 90 ° C
  • the discharge temperature is 120 ° C
  • the extruded material has a thickness of l mm.
  • the pulverization treatment is carried out to obtain a pulverized material having a particle size of lmm, which is a thermosetting modification additive of the asphalt mixture.
  • the temperature of the feeding section of the extruder is 90 ° C
  • the discharge temperature is 120 ° C
  • the thickness of the extruded material is l mm.
  • the pulverization treatment is carried out to obtain a pulverized material having a particle size of lmm, which is a thermosetting modification additive of the asphalt mixture.
  • Polyester Resin 65 Triglycidyl Isocyanurate 6 Acrylate 6 Clay 23 Silane Coupling Agent 0.1
  • the extruder feed section temperature is 90 ° C
  • the discharge temperature is 120 ° C
  • the extruded material has a thickness of l mm.
  • the pulverization treatment is carried out to obtain a pulverized material having a particle size of lmm, which is a thermosetting modification additive of the asphalt mixture.
  • the extruder feed section temperature is 90 ° C
  • the discharge temperature is 120 ° C
  • the extruded material has a thickness of l mm.
  • the pulverization treatment is carried out to obtain a pulverized material having a particle size of lmm, which is a thermosetting modification additive of the asphalt mixture.
  • the extruder feed section temperature is 90 ° C
  • the discharge temperature is 120 ° C
  • the extruded material has a thickness of l mm.
  • the pulverization treatment is carried out to obtain a pulverized material having a particle size of lmm, which is a thermosetting modification additive of the asphalt mixture.
  • Epoxy resin 40-terminal hydroxy phenolic resin 25 The above raw materials are broken into granules and used; 2) adding the crushed raw material to a high-speed mixer for 5-15 min, followed by adding a twin-screw extruder for kneading extrusion processing to obtain a sheet-like extruded material;
  • the extruder feed section temperature is 90 ° C
  • the discharge temperature is 120 ° C
  • the extruded material has a thickness of l mm.
  • the pulverization treatment is carried out to obtain a pulverized material having a particle size of lmm, which is a thermosetting modification additive of the asphalt mixture.
  • the mineral material selection in the embodiment of the present invention is AC-13 type, which is composed of aggregate and mineral powder, and the mineral grade is as shown in Table 1:
  • the asphalt mixture thermosetting modification additive in this example was prepared in the same manner as in Example 1.
  • the mineral material used in the embodiment of the present invention is the same as that of Embodiment 9;
  • the asphalt mixture modifier in this example was prepared as in Example 2.
  • the matrix asphalt is added to the first mixture and stirred uniformly to obtain a second mixed material; wherein, the stirring temperature is 130 ° C; and the stirring time is 600 s.
  • the mineral material used in the embodiment of the present invention is the same as that of Embodiment 9;
  • the asphalt mixture modifier in this example was prepared as in Example 2.
  • the matrix asphalt is added to the first mixture, and the mixture is uniformly stirred to obtain a second mixed material; wherein, the stirring temperature is 210 ° C; and the stirring time is 10 s.
  • the asphalt mixture prepared by the invention can be used for paving and repairing steel bridge decks, tunnels, airports, high-grade roads and urban trunk roads, and can be paved and repaired by conventional methods.
  • the asphalt mixture prepared in Examples 9-11 was prepared into a Marshall test according to a conventional method. The test piece was molded at 160 ° C, and then cured at 150 ° C for 2 h, and the Marshall performance test was carried out. The test results are shown in Table 2.
  • the invention provides a thermosetting modification additive for asphalt mixture, adopts thermosetting dry modification technology, has simple preparation method and can be continuously produced, and has good stability of prepared asphalt mixture, and is suitable for steel bridge deck, tunnel, airport, highway. And the paving and repairing of the city's main road.
  • the asphalt mixture proposed by the invention directly combines the thermosetting modification additive of the asphalt mixture with mineral materials and asphalt, does not undergo the steps of preparing the modified asphalt, has simple operation process, and can be continuously produced.
  • the asphalt mixture prepared by the method of the invention successfully avoids the compatibility and thermal stability problems of the modified asphalt prepared by the conventional method, and overcomes the thermal stability degradation of the modified asphalt during long-distance transportation and On-site thermal storage management is prone to problems such as segregation, thermal decomposition, and declining indicators, which reduce production costs and save energy and reduce emissions.

Abstract

本发明公开了一种沥青混合料热固性改性添加剂、其制备方法及由该改性剂制备的沥青混合料,所述沥青混合料热固性改性添加剂包括原料:树脂、固化剂、促进剂、流平剂、填料、助剂,其中,所述原料的重量份配比为:树脂35-70、固化剂1-35、促进剂0-2.5、流平剂0-6、填料20-40、助剂0-2。所述沥青混合料包括沥青混合料热固性改性添加剂、基质沥青或改性沥青、矿料,其中,所述原料的重量份配比为:沥青混合料热固性改性添加剂1-5、基质沥青或改性沥青2-8、矿料87-97。本发明制备的沥青混合料热固性改性添加剂,采用干法改性技术,制备的改性剂呈粉末状,粒径小,易于在沥青混合料中分散,由该改性剂制备的沥青混合料,操作工艺简单,可连续化生产,成本低。

Description

一种沥青混合料热固性改性添加剂、 其制备方法及沥青混合 料 技术领域
本发明属于道路工程领域,具体涉及一种沥青混合料热固性改性 添加剂、 其制备方法以及应用该改性剂制得的沥青混合料。
背景技术
近年来由于交通运输的迅速发展, 交通量和汽车轴载迅速增加、 行驶渠化, 对沥青和沥青混合料的性能提出了更高的要求。 一方面要 求沥青混合料有高温稳定性, 不产生车辙; 另一方面要求沥青具有低 温抗裂性、 抗疲劳性, 并延长路面的使用年限。 特别是由于沥青路面 技术的发展, 对沥青结合料的要求逐步提高。
为改善沥青的使用性能, 达到工程要求的质量指标, 人们采用调 配、 外加掺剂等方法制备各种改性沥青, 以满足工程的需要。 虽然改 性沥青的推广使铺面的性能得到了改善, 但未能改变沥青的热塑性, 因此难以克服沥青路面的通病。
热固性改性沥青混合料是采用热固性树脂与一定级配的集料配 制而成的材料。 热固性树脂包括环氧树脂、 聚氨酯、 酚醛树脂、 聚酯 等材料, 在改性的过程中, 热固性树脂与固化剂发生固化反应, 形成 网状交联的不可逆的固化物,其固化反应使沥青从热塑性转变为热固 性, 因此热固性改性沥青具有优异的物理、 力学性能。 通常再加入一 定的石料组成热固性改性沥青混合料, 由于热固性树脂经过固化后能 够形成很高的强度, 故又称为高强沥青混凝土材料, 其刚度大、 柔韧 性好、具有 好的抗疲劳性和耐久性,是钢桥面铺装层、路面磨耗层、 超重载交通道路的理想材料, 具有广泛的应用前景。
目前, 热固性改性技术中应用最为广泛的是环氧沥青混合料, 传 统的改性技术为湿法改性技术, 即先制备环氧改性沥青, 一般分为两 个组分, 其中, 环氧树脂为第一组分, 沥青及固化剂等其他助剂作为 第二组分, 两组分按照一定比例共混制成环氧树脂改性沥青, 然后再 加入一定的石料制得环氧沥青混合料。 这种方法不仅工艺复杂, 而且 由于沥青与环氧树脂本身不相容,如果直接在沥青中加入环氧树脂和 固化剂, 一般难以形成稳定的改性沥青。
中国专利 CN101255276A公开了一种道桥用环氧沥青材料及其绿 色制备方法, 该方法对沥青进行改性处理, 使沥青接技反应性官能团 提高环氧树脂与沥青的相容性, 使其本身成为一种环氧树脂的固化 剂, 再与固化剂、 促进剂组成综合固化剂后, 与环氧树脂混合制备改 性沥青。 中国专利 CN1952012A公开了一种热固性环氧沥青材料, 其 利用专用的增容剂提高环氧树脂与沥青的相容性,该增容剂制备方法 复杂, 成本高且不易工业化生产, 而且在实际应用中改性沥青的稳定 性难以控制, 使用工艺复杂。
发明内容
本发明的目的是针对现有的热固性改性沥青中存在的技术难题, 提供一种沥青混合料热固性改性添加剂。本发明的沥青混合料热固性 改性添加剂采用热固性干法改性技术,制备方法简单,可连续化生产, 制备的沥青混合料稳定性好, 适用于钢桥面、 隧道、 机场、 公路及城 巿干道的铺筑与修补。
本发明的另一目的是提出所述沥青混合料热固性改性添加剂的 制备方法。
本发明的第三个目的是提出利用所述改性添加剂制备的沥青混 合料。
为实现上述目的, 本发明的技术方案为:
一种沥青混合料热固性改性添加剂, 包括原料: 树脂、 固化剂、 促进剂、 流平剂、 填料、 助剂, 其中, 所述原料的重量份配比为: 树 脂 35-70、 固化剂 1-35、促进剂 0-2.5、流平剂 0-6、填料 20-40、助剂 0-2。 其中, 所述原料的重量份配比中: 促进剂 0-2.5、 流平剂 0-6、 助 剂 0-2表示的是原料中的促进剂、 流平剂、 助剂是可以选择加入, 也 可以选择不加入。
其中, 所述助剂为偶联剂或增塑剂, 优选为偶联剂。
特别是, 所述偶联剂为硅烷偶联剂或钛酸酯偶联剂, 优选为硅烷 偶联剂。
其中, 所述树脂为环氧树脂、 聚酯树脂、 酚醛树脂、 聚氨酯中的 一种或多种, 优选为环氧树脂。
其中,所述固化剂为胺类固化剂、酸酐类固化剂、酰肼类固化剂、 咪唑类固化剂、 端羟基酚醛树脂、 聚酯树脂、 丙烯酸树脂、 多元缩水 甘油酯、 羟烷基酰胺、 噁唑啉中的一种或多种。
特别是, 所述胺类固化剂为双氰胺、 三亚乙基四胺、 间苯二胺中 的一种或多种, 优选为双氰胺。
特别是, 所述酸酐类固化剂为甲基四氢苯酐、 均苯四酸酐、 邻苯 二甲酸酐、 聚壬二酸酐、 桐油酸酐中的一种或多种。
特别是, 所述酰肼类固化剂为癸二酸二酰肼、 己二酸二酰肼、 间 苯二酸二酰肼中的一种或多种, 优选为癸二酸二酰肼。
特别是, 所述咪唑类固化剂为咪唑、 2-甲基咪唑、 2-乙基 -4-甲基 咪唑中的一种或多种, 优选为 2-甲基咪唑。
特别是, 所述多元缩水甘油酯为异氰尿酸三缩水甘油酯、 甲基丙 烯酸缩水甘油酯、 二元酸缩水甘油酯中的一种或多种, 优选为异氰尿 酸三缩水甘油酯。
特别是, 所述羟烷基酰胺为 Ν,Ν,Ν' ,Ν' -四 [ β -羟乙基]己二酰胺 或 Ν,Ν,Ν' ,Ν, -四 [ β -羟丙基]己二酰胺, 优选为 Ν,Ν,Ν' ,Ν, -四 [ β - 羟乙基]己二酰胺。
特别是, 所述噁唑啉为苯撑二噁唑啉, 2-乙基 -2-噁唑啉, 2,2,-双 ( 2-噁唑啉) 中的一种或多种, 优选为苯撑二噁唑啉。 其中, 所述促进剂为咪唑类促进剂、叔胺类促进剂或金属氧化物 中的一种或多种, 优选为咪唑类促进剂或叔胺类促进剂, 进一步优选 为叔胺类促进剂。
特别是, 所述咪唑类促进剂为咪唑、 2-甲基咪唑、 2-乙基 -4-甲基 咪唑中的一种或多种, 优选为 2-甲基咪唑。
特别是, 所述叔胺类促进剂为苄基二甲胺、 2,4,6-三 (二甲氨基 甲基)苯酚(DMP-30 )、 N-N-二甲基苯胺中的一种或多种, 优选为 DMP-30。
其中, 所述流平剂为丙烯酸酯、 有机硅改性树脂、 酚醛树脂、 氨 基树脂、 醋酸丁酸纤维素中的一种或多种, 优选为丙烯酸酯。
其中, 所述填料为粘土、 滑石粉、 碳酸钙、 硫酸钡、 二氧化硅中 的一种或多种。
本发明另一方面提供一种沥青混合料热固性改性添加剂的制备 方法, 包括如下步骤:
1 )将树脂、 固化剂、 促进剂、 流平剂、 填料、 助剂混合均匀后, 加入到挤出机中进行挤出处理, 制成挤出物料;
2 )待挤出物料冷却后, 对其进行粉碎处理或造粒处理, 得到粒 度在 lmm以下的物料即为沥青混合料热固性改性添加剂;
其中, 所述挤出处理的温度为 90-120°C。
本发明再一方面提供一种沥青混合料, 包括原料: 沥青混合料热 固性改性添加剂、 基质沥青、 矿料。
其中, 所述原料的重量份配比为: 沥青混合料热固性改性添加剂 1-5 、 基质沥青 2-8、 矿料 87-97。
特别是, 所述原料的重量份配比为: 沥青混合料热固性改性添加 剂 2-3、 基质沥青 3-4、 矿料 94。
其中, 所述沥青混合料热固性改性添加剂按照如下步骤制备而 1 )将树脂、 固化剂、 促进剂、 流平剂、 填料、 助剂混合均匀后, 加入到挤出机中进行挤出处理, 制成挤出物料;
2 )待挤出物料冷却后, 对其进行粉碎处理或造粒处理, 得到粒 度在 lmm以下的物料即为沥青混合料热固性改性添加剂。
特别是, 所述挤出处理的温度为 90-120°C。
其中, 所述矿料由集料和矿粉组成。
本发明再一方面提供一种沥青混合料在钢桥面、 隧道、 机场、 高 等级公路及城巿干道的铺筑与修补上的应用。
本发明又一方面提供一种沥青混合料的制备方法, 包括如下步 骤:
( 1 )在搅拌条件下, 将沥青混合料热固性改性添加剂与预热的 集料混合, 搅拌均匀, 得到第一混合物料;
( 2 ) 向第一混合物料中加入基质沥青, 搅拌均匀, 得到第二混 合物料;
( 3 ) 向第二混合物料中加入矿粉, 搅拌均匀, 即得;
其中, 所述步骤(1 ) - ( 3 ) 中搅拌的温度为 130-210°C, 搅拌时 间为 10-600s。
本发明技术方案具有如下优点:
1、 本发明提出的沥青混合料热固性改性添加剂, 采用干法改性 技术, 使用工艺简单可靠, 所制备的热固性改性添加剂呈粉末状, 粒 径小, 易于在沥青混合料中分散。
2、 本发明提出的沥青混合料, 是直接将热固性改性添加剂与矿 料、 沥青拌合而成, 不经历制作改性沥青的步骤, 操作工艺简单, 可 连续化生产。
3、 采用本发明方法制备的沥青混合料, 成功的避免了常规方法 制备改性沥青中存在的配伍性和热稳定性等问题,而且克服了改性沥 青在长途运输过程中出现的热稳定性降低以及现场热储存管理容易 出现的离析、热分解、指标下降等问题, 降低了生产成本, 节能减排。
4、 本发明制备的沥青混合料热固性改性添加剂, 可以由施工单 位根据具体工程状况确定或调整改性剂的添加量,利用此热固性改性 添加剂制备而成的沥青混合料适用于钢桥面、 隧道、 机场、 公路及城 巿干道的铺筑与修补。 具体实施方式
下面结合具体实施例来进一步描述本发明, 本发明的优点和特点 将会随着描述而更为清楚。 但这些实施例仅是范例性的, 并不对本发 明的范围构成任何限制。 本领域技术人员应该理解的是, 在不偏离本 发明的精神和范围下可以对本发明技术方案的细节和形式进行修改 或替换, 但这些修改和替换均落入本发明的保护范围内。
实施例 1 制备沥青混合料热固性改性添加剂
1 ) 原料预处理
按照如下重量配比准备原料:
环氧树脂 E-12 68 双氰胺 3
2-甲基咪唑 0.1 丙烯酸酯 0.5
碳酸钙 28.4
将上述原料破碎成颗粒, 备用;
2 )将破碎后的原料加入到高速混合机内混合 5-15min,接着加入 双螺杆挤出机中进行混炼挤出处理, 得到片状挤出物料;
其中, 所述挤出机送料段温度为 90°C, 出料温度为 120°C ; 所述 挤出物料厚度为 lmm。
3 )将挤出物料自然冷却后, 进行粉碎处理, 得到粒度 lmm的 粉碎物料即为沥青混合料热固性改性添加剂。
实施例 2 制备沥青混合料热固性改性添加剂
1 ) 原料预处理 环氧树脂 50 端羟基酚醛树脂 25
DMP-30 2.5 丙烯酸酯 1
硫酸钡 21.5 硅烷偶联剂 0.1
将上述原料破碎成颗粒, 备用;
2 )将破碎后的原料加入到高速混合机内混合 5-15min,接着加入 双螺杆挤出机中进行混炼挤出处理, 得到片状挤出物料;
其中, 所述挤出机送料段温度为 90°C, 出料温度为 120°C ; 所述 挤出物料厚度为 lmm。
3 )将挤出物料自然冷却后, 进行粉碎处理, 得到粒度 lmm的 粉碎物料即为沥青混合料热固性改性添加剂。
实施例 3 制备沥青混合料热固性改性添加剂
1 ) 原料预处理
按照如下重量配比准备原料:
环氧树脂 E-12 70 癸二酸二酰肼 5.3
丙烯酸酯 0.8 滑石粉 23.9
硅烷偶联剂 0.1
将上述原料破碎成颗粒, 备用;
2 )将破碎后的原料加入到高速混合机内混合 5-15min,接着加入 双螺杆挤出机中进行混炼挤出处理, 得到片状挤出物料;
其中, 所述挤出机送料段温度为 90°C, 出料温度为 120°C ; 所述 挤出物料厚度为 lmm。
3 )将挤出物料自然冷却后, 进行粉碎处理, 得到粒度 lmm的 粉碎物料即为沥青混合料热固性改性添加剂。
实施例 4 制备沥青混合料热固性改性添加剂
1 ) 原料预处理
按照如下重量配比准备原料:
环氧树脂 E-12 35 聚酯树脂 35 丙烯酸酯 0.8 二氧化硅 29.2 硅烷偶联剂 0.15
将上述原料破碎成颗粒, 备用;
2 )将破碎后的原料加入到高速混合机内混合 5-15min,接着加入 双螺杆挤出机中进行混炼挤出处理, 得到片状挤出物料;
其中, 所述挤出机送料段温度为 90°C, 出料温度为 120°C ; 所述挤出物料厚度为 lmm。
3 )将挤出物料自然冷却后, 进行粉碎处理, 得到粒度 lmm的 粉碎物料即为沥青混合料热固性改性添加剂。
实施例 5 制备沥青混合料热固性改性添加剂
1 ) 原料预处理
按照如下重量配比准备原料:
聚酯树脂 65 异氰尿酸三缩水甘油酯 6 丙烯酸酯 6 粘土 23 硅烷偶联剂 0.1
将上述原料破碎成颗粒, 备用;
2 )将破碎后的原料加入到高速混合机内混合 5-15min,接着加入 双螺杆挤出机中进行混炼挤出处理, 得到片状挤出物料;
其中, 所述挤出机送料段温度为 90°C, 出料温度为 120°C ; 所述 挤出物料厚度为 lmm。
3 )将挤出物料自然冷却后, 进行粉碎处理, 得到粒度 lmm的 粉碎物料即为沥青混合料热固性改性添加剂。
实施例 6 制备沥青混合料热固性改性添加剂
1 ) 原料预处理
按照如下重量配比准备原料:
环氧树脂 56.5 2-甲基咪唑 1
DMP-30 0.5 瑙酸钙 40 硅烷偶联剂 2
将上述原料破碎成颗粒, 备用;
2 )将破碎后的原料加入到高速混合机内混合 5-15min,接着加入 双螺杆挤出机中进行混炼挤出处理, 得到片状挤出物料;
其中, 所述挤出机送料段温度为 90°C, 出料温度为 120°C ; 所述 挤出物料厚度为 lmm。
3 )将挤出物料自然冷却后, 进行粉碎处理, 得到粒度 lmm的 粉碎物料即为沥青混合料热固性改性添加剂。
实施例 7 制备沥青混合料热固性改性添加剂
1 ) 原料预处理
按照如下重量配比准备原料:
环氧树脂 45.5 丙烯酸树脂 30
2-甲基咪唑 2.5 丙烯酸酯 2 将上述原料破碎成颗粒, 备用;
2 )将破碎后的原料加入到高速混合机内混合 5-15min,接着加入 双螺杆挤出机中进行混炼挤出处理, 得到片状挤出物料;
其中, 所述挤出机送料段温度为 90°C, 出料温度为 120°C ; 所述 挤出物料厚度为 lmm。
3 )将挤出物料自然冷却后, 进行粉碎处理, 得到粒度 lmm的 粉碎物料即为沥青混合料热固性改性添加剂。
实施例 8 制备沥青混合料热固性改性添加剂
1 ) 原料预处理
按照如下重量配比准备原料:
环氧树脂 40 端羟基酚醛树脂 25 将上述原料破碎成颗粒, 备用; 2 )将破碎后的原料加入到高速混合机内混合 5-15min,接着加入 双螺杆挤出机中进行混炼挤出处理, 得到片状挤出物料;
其中, 所述挤出机送料段温度为 90°C, 出料温度为 120°C ; 所述 挤出物料厚度为 lmm。
3 )将挤出物料自然冷却后, 进行粉碎处理, 得到粒度 lmm的 粉碎物料即为沥青混合料热固性改性添加剂。
实施例 9 制备沥青混合料
( 1 )按照如下重量配比准备原料:
沥青混合料热固性改性添加剂 2 基质沥青 4
矿料 94
本发明实施例中的矿料选择 AC-13 型, 由集料和矿粉组成, 所 述矿料级配如表 1所示:
表 1矿料级配组成表
Figure imgf000011_0001
本实施例中的沥青混合料热固性改性添加剂为实施例 1 制备得 到。
( 2 )在搅拌条件下, 向预热至 165 °C的集料中加入沥青混合料 改性剂, 搅拌均匀, 得到第一混合物料; 其中, 搅拌的温度为 160 °C, 搅拌时间为 30s。
( 3 ) 向第一混合物料中加入基质沥青, 搅拌均匀, 得到第二混 合物料; 其中, 搅拌温度为 160°C ; 搅拌时间为 90s。
( 4 ) 向第二混合物料中加入矿粉, 搅拌均匀, 即制得沥青混合 料。 其中, 搅拌温度为 160°C, 搅拌时间为 90s。
实施例 10 制备沥青混合料
( 1 )按照如下重量配比准备原料:
沥青混合料热固性改性添加剂 2 基质沥青 4 矿料 94
本发明实施例中使用的矿料与实施例 9相同;
本实施例中的沥青混合料改性剂为实施例 2制备得到。
(2)在搅拌条件下, 向预热至 135°C的集料中加入沥青混合料 热固性改性添加剂, 搅拌均匀, 得到第一混合物料; 其中, 搅拌的温 度为 130°C, 搅拌时间为 600s。
(3) 向第一混合物料中加入基质沥青, 搅拌均匀, 得到第二混 合物料; 其中, 搅拌温度为 130°C; 搅拌时间为 600s。
(4) 向第二混合物料中加入矿粉, 搅拌均匀, 即制得沥青混合 料。 其中, 搅拌温度为 130°C, 搅拌时间为 600s。
实施例 11制备沥青混合料
( 1 )按照如下重量配比准备原料:
沥青混合料热固性改性添加剂 3 基质沥青 3
矿料 94
本发明实施例中使用的矿料与实施例 9相同;
本实施例中的沥青混合料改性剂为实施例 2制备得到。
(2)在搅拌条件下, 向预热至 215°C的集料中加入沥青混合料 热固性改性添加剂, 搅拌均匀, 得到第一混合物料; 其中, 搅拌的温 度为 210°C, 搅拌时间为 10s。
(3) 向第一混合物料中加入基质沥青, 搅拌均匀, 得到第二混 合物料; 其中, 搅拌温度为 210°C; 搅拌时间为 10s。
(4) 向第二混合物料中加入矿粉, 搅拌均匀, 即制得沥青混合 料。 其中, 搅拌温度为 210°C, 搅拌时间为 10s。
本发明制备的沥青混合料可用于钢桥面、 隧道、 机场、 高等级公 路及城巿干道的铺筑与修补, 采用常规的铺装和修补方法即可。 将实施例 9-11 制备的沥青混合料按照常规方法制备成马歇尔试 件, 将试件在 160°C下成型, 接着在 150°C下养护 2h后, 进行马歇尔 性能测试, 测试结果见表 2。
表 2 马歇尔性能测试结果
Figure imgf000013_0001
从表 2可以看出,本发明制备的沥青混合料的各项性能指标均满 要求, 马歇尔稳定度均可达到要求的 4倍以上, 可用于钢桥面、 隧 、 机场、 高等级公路及城巿干道的铺筑与修补。
以上的实施例仅仅是对本发明的优选实施方式进行描述,并非对 本发明的范围进行限定, 在不脱离本发明设计精神的前提下, 本领域 普通工程技术人员对本发明的技术方案作出的各种变型和改进,均应 落入本发明的权利要求书确定的保护范围内。 工业实用性
本发明提出一种沥青混合料热固性改性添加剂,采用热固性干法 改性技术, 制备方法简单, 可连续化生产, 制备的沥青混合料稳定性 好, 适用于钢桥面、 隧道、 机场、 公路及城巿干道的铺筑与修补。 本 发明提出的沥青混合料,是直接将所述沥青混合料热固性改性添加剂 与矿料、沥青拌合而成,不经历制作改性沥青的步骤,操作工艺简单, 可连续化生产。 采用本发明方法制备的沥青混合料, 成功的避免了常 规方法制备改性沥青中存在的配伍性和热稳定性等问题,而且克服了 改性沥青在长途运输过程中出现的热稳定性降低以及现场热储存管 理容易出现的离析、 热分解、 指标下降等问题, 降低了生产成本, 节 能减排。

Claims

权 利 要 求 书
1、 一种沥青混合料热固性改性添加剂, 其特征在于, 包括原料: 树脂、 固化剂、 促进剂、 流平剂、 填料、 助剂, 其中, 所述原料的重 量份配比为: 树脂 35-70、 固化剂 1-35、 促进剂 0-2.5、 流平剂 0-6、 填料 20-40、 助剂 0-2。
2、 如权利要求 1所述的沥青混合料热固性改性添加剂, 其特征 在于, 所述树脂为环氧树脂、 聚酯树脂、 酚醛树脂、 聚氨酯中的一种 或多种。
3、 如权利要求 1所述的沥青混合料热固性改性添加剂, 其特征 在于, 所述固化剂为胺类固化剂、 酸酐类固化剂、 酰肼类固化剂、 咪 唑类固化剂、 端羟基酚醛树脂、 聚酯树脂、 丙烯酸树脂、 多元缩水甘 油酯、 羟烷基酰胺、 噁唑啉中的一种或多种; 所述促进剂为咪唑类促 进剂、 叔胺类促进剂或金属氧化物中的一种或多种。
4、 如权利要求 1所述的沥青混合料热固性改性添加剂, 其特征 在于, 所述流平剂为丙烯酸酯、 有机硅改性树脂、 酚醛树脂、 氨基树 脂、 醋酸丁酸纤维素中的一种或多种。
5、 如权利要求 1所述的沥青混合料热固性改性添加剂, 其特征 在于, 所述填料为粘土、 滑石粉、 碳酸钙、 硫酸钡、 二氧化硅中的一 种或多种。
6、 如权利要求 1所述的沥青混合料热固性改性添加剂, 其特征 在于, 所述助剂为偶联剂或增塑剂。
7、 一种制备如权利要求 1-6任一所述的沥青混合料热固性改性 添加剂的方法, 其特征在于, 包括如下步骤:
1 )将树脂、 固化剂、 促进剂、 流平剂、 填料、 助剂混合均匀后, 加入到挤出机中进行挤出处理, 制成挤出物料;
2 )待挤出物料冷却后, 对其进行粉碎处理或造粒处理, 得到粒 度在 1mm以下的物料即为沥青混合料热固性改性添加剂; 其中, 所述挤出处理的温度为 90-120°C。
8、 一种沥青混合料, 其特征在于, 包括原料: 沥青混合料热固 性改性添加剂、 基质沥青或改性沥青、 矿料, 其中, 所述原料的重量 份配比为: 沥青混合料热固性改性添加剂 1-5、 基质沥青或改性沥青 2-8、 矿料 87-97; 其中, 所述沥青混合料热固性改性添加剂按照权利 要求 7所述的方法制备而成; 其中, 所述矿料由集料和矿粉组成。
9、 如权利要求 8所述的沥青混合料在钢桥面、 隧道、 机场、 高 等级公路及城巿干道的铺筑与修补上的应用。
10、 一种制备如权利要求 8所述的沥青混合料的方法, 其特征在 于, 包括如下步骤:
( 1 )在搅拌条件下, 将沥青混合料热固性改性添加剂与预热的 集料混合, 搅拌均匀, 得到第一混合物料;
( 2 ) 向第一混合物料中加入基质沥青或改性沥青, 搅拌均匀, 得到第二混合物料;
( 3 ) 向第二混合物料中加入矿粉, 搅拌均匀, 即得;
其中, 所述步骤(1 ) - ( 3 ) 中搅拌的温度为 130-210°C, 搅拌时 间为 10-600s。
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