CN110387131A - A kind of high storage stability rubber and plastic alloy asphalt modifier and preparation method thereof - Google Patents
A kind of high storage stability rubber and plastic alloy asphalt modifier and preparation method thereof Download PDFInfo
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- CN110387131A CN110387131A CN201910662021.2A CN201910662021A CN110387131A CN 110387131 A CN110387131 A CN 110387131A CN 201910662021 A CN201910662021 A CN 201910662021A CN 110387131 A CN110387131 A CN 110387131A
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 139
- 239000010426 asphalt Substances 0.000 title claims abstract description 60
- 239000004033 plastic Substances 0.000 title claims abstract description 59
- 229920003023 plastic Polymers 0.000 title claims abstract description 59
- 239000000956 alloy Substances 0.000 title claims abstract description 44
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 44
- 238000003860 storage Methods 0.000 title claims abstract description 40
- 239000003607 modifier Substances 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- 239000000843 powder Substances 0.000 claims abstract description 74
- 239000002699 waste material Substances 0.000 claims abstract description 48
- 239000011159 matrix material Substances 0.000 claims abstract description 29
- 230000005855 radiation Effects 0.000 claims abstract description 11
- AEMOLEFTQBMNLQ-AQKNRBDQSA-N D-glucopyranuronic acid Chemical compound OC1O[C@H](C(O)=O)[C@@H](O)[C@H](O)[C@H]1O AEMOLEFTQBMNLQ-AQKNRBDQSA-N 0.000 claims abstract description 9
- IAJILQKETJEXLJ-UHFFFAOYSA-N Galacturonsaeure Natural products O=CC(O)C(O)C(O)C(O)C(O)=O IAJILQKETJEXLJ-UHFFFAOYSA-N 0.000 claims abstract description 9
- 230000004913 activation Effects 0.000 claims abstract description 9
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 claims abstract description 9
- 229940097043 glucuronic acid Drugs 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims abstract description 9
- 229920005573 silicon-containing polymer Polymers 0.000 claims abstract description 9
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 8
- 230000023556 desulfurization Effects 0.000 claims abstract description 8
- 229920000570 polyether Polymers 0.000 claims abstract description 8
- 230000008929 regeneration Effects 0.000 claims abstract description 8
- 238000011069 regeneration method Methods 0.000 claims abstract description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000004593 Epoxy Substances 0.000 claims abstract description 7
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 7
- 238000001035 drying Methods 0.000 claims abstract description 6
- 238000005453 pelletization Methods 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims abstract description 6
- 230000003213 activating effect Effects 0.000 claims abstract description 5
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 13
- 238000001125 extrusion Methods 0.000 claims description 6
- WURBVZBTWMNKQT-UHFFFAOYSA-N 1-(4-chlorophenoxy)-3,3-dimethyl-1-(1,2,4-triazol-1-yl)butan-2-one Chemical compound C1=NC=NN1C(C(=O)C(C)(C)C)OC1=CC=C(Cl)C=C1 WURBVZBTWMNKQT-UHFFFAOYSA-N 0.000 claims description 5
- 239000000835 fiber Substances 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- -1 polyethylene Polymers 0.000 claims description 5
- 238000010792 warming Methods 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 239000005708 Sodium hypochlorite Substances 0.000 claims description 2
- 239000012153 distilled water Substances 0.000 claims description 2
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims description 2
- 239000003822 epoxy resin Substances 0.000 claims 1
- 229920000647 polyepoxide Polymers 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 abstract description 24
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 101100027969 Caenorhabditis elegans old-1 gene Proteins 0.000 abstract 1
- 230000004048 modification Effects 0.000 description 13
- 238000012986 modification Methods 0.000 description 13
- 239000002245 particle Substances 0.000 description 13
- 230000009286 beneficial effect Effects 0.000 description 7
- 239000003292 glue Substances 0.000 description 5
- 150000001336 alkenes Chemical class 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 4
- 238000002955 isolation Methods 0.000 description 4
- 239000012071 phase Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000008961 swelling Effects 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 239000003205 fragrance Substances 0.000 description 3
- 238000005469 granulation Methods 0.000 description 3
- 230000003179 granulation Effects 0.000 description 3
- 230000003993 interaction Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
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- 239000002253 acid Substances 0.000 description 2
- 239000011149 active material Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
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- 239000000084 colloidal system Substances 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 229920001617 Vinyon Polymers 0.000 description 1
- 150000008065 acid anhydrides Chemical class 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 239000010692 aromatic oil Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010382 chemical cross-linking Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000010534 mechanism of action Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000005501 phase interface Effects 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000006903 response to temperature Effects 0.000 description 1
- 238000000518 rheometry Methods 0.000 description 1
- 238000010074 rubber mixing Methods 0.000 description 1
- 238000010057 rubber processing Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000002522 swelling effect Effects 0.000 description 1
- 239000004636 vulcanized rubber Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/20—Recycled plastic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/20—Recycled plastic
- C08L2207/24—Recycled plastic recycling of old tyres and caoutchouc and addition of caoutchouc particles
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a kind of high storage stability rubber and plastic alloy asphalt modifiers, it comprises the following components in parts by weight: 60-70 parts of rubber powder, 5-7 parts of waste plastic, 0.05-0.1 parts of glucuronic acid, 15-20 parts of dimethyl silicone polymer, 8-10 parts and graphene powder 0.00005-0.01 parts of polyether epoxy；Preparation step is that waste old 1) is broken into short grained cotton-shaped rubber powder；2) activation desulfurization regeneration is carried out to the cotton-shaped rubber powder that step 1) obtains by microwave radiation, obtains activating rubber powder；3) dry by said components by being sufficiently mixed, extruding pelletization obtains granular asphalt modifier；4) matrix pitch is heated, is heated up after modifying agent is added, high speed shear is drying to obtain modified pitch.Modifying agent produced by the present invention can be effectively improved the high temperature performance of matrix pitch, promote storage stability, improve the adhesion between asphalt and aggregate, it is easily stored and it is effectively save mix and stir, transport and carrying cost, substantially reduce production cost.
Description
Technical field
The present invention relates to asphalt modification technical field, more particularly to a kind of high storage stability rubber and plastic alloy drip
Green modifying agent and preparation method thereof.
Background technique
The problem of black pollution caused by waste tire of automobile is entire society's concern, rubber asphalt and waste tyre rubber powder
Asphalt in highway construction using in the ascendant, modifying rubber powder is anti-aging to the high temperature performance of matrix pitch
Performance, response to temperature, elasticity are restored all to be significantly improved, and waste rubber tyre powder not only improves asphalt performance for modified pitch, improves
Economic benefit, also solves the black pollution problem increasingly sharpened, therefore, rubber asphalt and rubber grain modified pitch are
Become the optimal path of internationally recognized damaged tire processing, harmless processing and resource utilization.
Unfortunately, difficult processing is brought because the chemical crosslinking of rubber molecule acts on through the modified pitch of waste rubber tyre powder, it is high
The problems such as pollution, easily isolation, since rubber powder modified asphalt storage stability is poor, it is necessary to carry out job mix, it is difficult to realize and produce
Product, with expanding rapidly for modified pitch demand, Site is faced with high production cost, and production efficiency is low, by environment because
Element influences the problems such as big, and the storage stability of rubber modified asphalt has been to be concerned by more and more people.
China started to carry out the application study of waste rubber powder modified pitch in the 1980s, also making waste rubber powder
Techniques of Experimental Road for Modified Asphalt section, but the result of test section is unsatisfactory.The profit of traditional modified pitch industry was got in recent years
Come lower, it is contemplated that the factor of environmental protection, waste rubber powder modified pitch industry are increasingly valued by people.It is external waste and old
The application of rubber powder modified asphalt has longer history, has carried out being widely applied research in many countries such as America and Europe and road surface is tried
It tests, is greatly promoted application of the waste tire in field of road.
The modified high temperature performance to pitch of waste rubber tyre powder improves limitation, therefore how to provide a kind of storage stability
The problem of good rubber and plastic alloy asphalt modifier and preparation method thereof is those skilled in the art's urgent need to resolve.
Summary of the invention
In view of this, in order to solve the storage stability of rubber asphalt deficiency, compatibility and poor adhesion, it is difficult to process,
Transport and scene mix and stir process there are the problem of, the present invention provides a kind of easy to operate, low in cost, be easy to the height saved
Storage stability rubber and plastic alloy asphalt modifier.
In order to achieve the above object, the present invention adopts the following technical scheme:
A kind of high storage stability rubber and plastic alloy asphalt modifier, the component including following mass fraction: rubber powder 60-70
Part, 5-7 parts of waste plastic, 0.05-0.1 parts of glucuronic acid, 15-20 parts of dimethyl silicone polymer, polyether epoxy 8-10
Part and graphene powder 0.00005-0.01 parts.
Preferably, in a kind of above-mentioned high storage stability rubber and plastic alloy asphalt modifier, the rubber powder mesh number is 30-
40 mesh, density 1.0-1.3kg/m3, impurity content is less than 1%, and tenor is less than 0.5%.
The beneficial effect of above-mentioned technical proposal is: being changed as raw material to matrix pitch using waste old with waste plastic
Property, the rubber plastic modified agent after being made can be uniformly suspended in pitch, the continuous phase system of semisolid be formed, if rubber powder
Volume is excessive, then pitch swelling can be made unevenly to cause rubber grain that precipitating isolation occurs, influence the performance of modified pitch, therefore
Control modifying agent is aforementioned proportion, and the performance of modified pitch can be made to reach best.In addition, the benefit again of waste old and waste plastic
With reducing environmental pollution, realize the recycling and reusing of resource, and reduce costs.
Preferably, in a kind of above-mentioned high storage stability rubber and plastic alloy asphalt modifier, the waste plastic is poly- second
The waste plastic of alkene.
The beneficial effect of above-mentioned technical proposal is: vinyon can be compatible well with rubber grain and pitch, In
It is evenly dispersed in pitch, effectively inhibit the isolation of rubber modified asphalt.
The present invention also provides a kind of preparation methods of high storage stability rubber and plastic alloy asphalt modifier, including following step
It is rapid:
(1) waste old is removed into metal, fiber and sundries, is then broken into short grained cotton-shaped rubber powder；
(2) activation desulfurization regeneration is carried out by the rubber powder that microwave radiation obtains step (1), obtains activating rubber powder；
(3) by activating rubber powder and waste plastic, glucuronic acid, dimethyl silicone polymer, polyether epoxy and stone
Black alkene powder is dry by being sufficiently mixed, and extruding pelletization is to get arriving rubber alloy asphalt modifier；
(4) matrix pitch is heated, rubber alloy asphalt modifier, heating is added, high speed shear is drying to obtain modified drip
It is green.
Preferably, in a kind of above-mentioned preparation method of high storage stability rubber and plastic alloy asphalt modifier, in step (2)
The activation desulfurization regeneration are as follows: put into rubber powder in the mixed solution of distilled water and sodium hypochlorite that volume ratio is 1:1, stirring
1~2h is stirred after uniformly under the conditions of 50~80 DEG C, after reaction filters rubber powder, is placed in 105~110 DEG C of baking ovens and does
It is dry to water content≤5%.
Preferably, in a kind of above-mentioned preparation method of high storage stability rubber and plastic alloy asphalt modifier, in step (2)
The microwave frequency of the microwave radiation is 900-1000MHz, and power is 75~80kW, and the time is 1~3min.
The beneficial effect of above-mentioned technical proposal is: pre-processing to rubber powder, so that rubber surface activates, increases
The binding ability of rubber and plastics improves the mechanical property of rubber plastic blend body.
Preferably, in a kind of above-mentioned preparation method of high storage stability rubber and plastic alloy asphalt modifier, in step (3)
The drying temperature is 130~140 DEG C, and the time is 1~1.5h.
The beneficial effect of above-mentioned technical proposal is: the asphalt modifier prepared under this scheme is uniformly mixed, and is had excellent
Rubber plastic blend mechanics performance.
Preferably, in a kind of above-mentioned preparation method of high storage stability rubber and plastic alloy asphalt modifier, in step (3)
The extrusion temperature of the extruding pelletization is 180~185 DEG C, and revolving speed is 200~250r/min.The beneficial effect of above-mentioned technical proposal
Be: asphalt modifier obtained is closely knit under the above parameters, and particle is uniform, is not readily separated.
Preferably, in a kind of above-mentioned preparation method of high storage stability rubber and plastic alloy asphalt modifier, in step (4)
The high speed shear is 60~90min of rotating speed cutting of 3500~4000r/min.
The beneficial effect of above-mentioned technical proposal is: the modified pitch surface being prepared under the conditions of above-mentioned high speed shear without
Bubble, swelling uniformly, are not susceptible to isolate.
Preferably, in a kind of above-mentioned preparation method of high storage stability rubber and plastic alloy asphalt modifier, in step (4)
The rubber alloy asphalt modifier volume being added is 18%, is warming up to 175-195 DEG C, and the drying temperature is 140
~160 DEG C, the time is 60~80min.
The beneficial effect of above-mentioned technical proposal is: modified pitch various aspects performance obtained has larger under this scheme
It is promoted.
The mechanism of action of above-mentioned asphalt modifier is as follows:
Effect between rubber powder and pitch does not chemically react, and aromatic oil is adsorbed onto the chain of the polymer of rubber powder
End, rubber powder are not completely dissolved in pitch and generate chemical reaction, but due to the rubber under shear at high temperature stirring action
Rubber powder has adsorbed the oil content in matrix pitch and swelling action occurs, and rubber grain becomes smaller and is converted to gel structure, reduces rubber
Distance between glue particle and asphalt component increases the viscosity of asphalt system.
With the swelling of rubber particle, the component of matrix pitch is also changing.Since rubber particle is crosslinked, no
Same particle size and shape forms different structures, this keeps the response of its rheology different, and pitch can occur with when rubber mix
Over cure, the reason is that always thering is sulphur left behind in vulcanized rubber during rubber processing, do not have completely with pitch
Reaction, vulcanizing when heated bitumen is with rubber mix will re-start, and continue the regular hour.At room temperature, rubber particles
It can continue to absorb the light component in pitch, this can not only be such that the effective volume of rubber particles increases to be swollen, but also can be with
Change the property of pitch liquid phase.The interaction temperature of rubber powder and pitch controls the effect degree of the two, low interaction
Temperature causes complete swelling that need to carry out longer time, and is swollen in the short time when high temperature and enters degradation process.
Plastics belong to crystalline polymer, are not easy to disperse in matrix pitch, and rubber belongs to non-crystalline substances, relatively easily
In realizing mixing with matrix pitch, waste and old rubber alloy modification agent crystallinity is smaller, is more conducive to and matrix pitch mixing, waste and old rubber
The crystallinity of modeling alloy modification agent melts that endothermic value is proportional with it, and there is the minimum modifying agent for melting endothermic value will have
The smallest crystallinity, it is easier to which, with matrix pitch mixing, after the volume of waste old reaches certain value, waste and old rubber alloy changes
Property agent melting endothermic value be in reduceds trend, with matrix pitch with best compatibility.When plastics and rubber mixing, when altogether
When mixed temperature reaches the fusing point of plastic molecules or more, plastic molecules will be arranged no longer in close lenticular, a part of rubber point
Son is diffused between plastic molecules, so that rubber is merged with plastics, after temperature reduces, what this part was combined with rubber molecule
Plastic molecules will be unable to form compact arranged crystalline texture, and crystalline particle becomes smaller, when with waste and old rubber alloy modification agent preparation
When modified pitch, plastics can preferably disperse in matrix pitch, will not crystallize and biggish particle is precipitated, while inhibit rubber
Isolation of the glue particle in pitch, therefore can be stabilized in matrix pitch.
Modifying agent is to the modification of pitch based on physical modification.The polyolefins such as plastics modifying agent and saturation divide content high
Matrix pitch has preferable compatibility, and the matrix pitch that rubber modifying agent divides content high with fragrance is with preferable compatible
Property, it, can be from the suitable matrix pitch of angle Selection of component when preparing modified pitch with waste and old rubber alloy modification agent.Drip
Green component stability shows themselves in that colloid > asphalitine > fragrance divides > saturation point.The presence of asphalitine, colloid can improve drip
Green high-temperature behavior, and it is saturated point cryogenic property that pitch is then improved with the presence of fragrance point.Therefore, for Different climate ring
Area under border is preferably directed to local area demand, and the requirement of different high temperature performances is met according to emphasis.
Since modifying process of the rubber and plastic alloy modifying agent to matrix pitch is mainly physical modification process, the two-phase of modifying agent
Respective performance is still maintained, also not new substance generates, and combines at two-phase interface, so that performance complement each other, dispersion
In matrix pitch, the interaction of modifying agent and matrix pitch is mainly realized by molecular force.Matrix pitch molecule and modification
Agent molecule has preferable compatibility compared to alloy modification agent and matrix pitch on phase interface.
The chemisorption on waste rubber powder surface refers to that pitch and the active material on waste rubber powder surface are chemically reacted,
Form the molecular interface layer to dissolve each other, while by introducing glucuronic acid, dimethyl silicone polymer to waste rubber powder surface into
Row modification introduces reactive functional groups, keeps its contact between pitch even closer, to improve the compatibility of the two.
The unprocessed front surface of waste rubber powder is in acidity, and the aphthenic acids, asphalt acid, asphalt acid anhydrides etc. in asphalt component belong to table
Face active material, therefore with pitch chemisorption will not occur for waste rubber powder.Activation modification is carried out to waste rubber powder surface, can be made
Chemically reacted with the acidic components in pitch, generate chemisorption, so as to improve waste rubber powder modified pitch
High-temperature storage stability further improves sticking for asphalt and aggregate.
It can be seen via above technical scheme that compared with prior art, modifying agent produced by the present invention can be effectively improved
The high temperature performance of modified pitch promotes storage stability, improves the adhesion between asphalt and aggregate, and can reduce drip
Energy consumption and carbon emission, the production of invention is greatly decreased to prevent the high temperature ageing of pitch in the green temperature with asphalt heating
Product it is easily stored and it is effectively save mix and stir, transport and carrying cost, substantially reduce production cost.
Specific embodiment
Below in conjunction with the embodiment of the present invention, technical scheme in the embodiment of the invention is clearly and completely described,
Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based in the present invention
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the scope of protection of the invention.
Embodiment 1
A kind of high storage stability rubber and plastic alloy asphalt modifier, the component including following mass fraction: 65 parts of rubber powder gives up
Abandon 5 parts of plastics, 0.05 part of glucuronic acid, 10 parts of dimethyl silicone polymer, polyether epoxy 10%, graphene powder
0.005 part.
It is prepared by the following method to obtain:
Waste old is removed into metal, fiber and sundries, is then broken into the short grained cotton-shaped rubber powder of 30 purposes,
Density is 1.0-1.3kg/m3, and impurity content is less than 1%, and tenor is less than 0.5%；
(2) activation desulfurization regeneration is carried out by the cotton-shaped rubber powder that microwave radiation obtains step (1), microwave radiation frequencies are
900-1000MHz, microwave power 75kW, time 1min；
(3) said components are placed in 140 DEG C of baking ovens and conserve 1h by being sufficiently mixed, then modifying agent at the uniform velocity poured into double
In screw extruder, extrusion temperature is 180 DEG C, revolving speed 200r/min；
(4) the rubber powder stretching and granulation squeezed out extruder using strand granulator is spare；
(5) matrix pitch is heated to 175 DEG C, is warming up to 195 DEG C after the modified glue powder particle of different addition quantity preparation is added,
After the rotating speed cutting 60min of 3500r/min, 160 DEG C of development 60min of baking oven are put into up to modified pitch.
Embodiment 2
A kind of high storage stability rubber and plastic alloy asphalt modifier, the component including following mass fraction: 65 parts of rubber powder,
6 parts of the waste plastic of polyethylene, 0.075 part of glucuronic acid, 17.5 parts of dimethyl silicone polymer, 9 parts of polyether epoxy, stone
0.000075 part of black alkene powder.
It is prepared by the following method to obtain:
(1) waste old is removed into metal, fiber and sundries, is then broken into the short grained cotton-shaped rubber of 25 purposes
Powder, density 1.0-1.3kg/m3, impurity content is less than 1%, and tenor is less than 0.5%；
(2) activation desulfurization regeneration is carried out by the cotton-shaped rubber powder that microwave radiation obtains step (1), microwave radiation frequencies are
900-1000MHz, microwave power 80kW, time 2min；
(3) additive through and being sufficiently mixed, then modifying agent at the uniform velocity poured into double screw extruder, extrusion temperature
It is 180 DEG C, revolving speed 200r/min；
(4) the rubber powder stretching and granulation squeezed out extruder using strand granulator is spare；
(5) matrix pitch is heated to 175 DEG C, is warming up to 195 DEG C after the modified glue powder particle of different addition quantity preparation is added,
After the rotating speed cutting 60min of 3500r/min, 160 DEG C of development 2h of baking oven are put into up to modified pitch.
Embodiment 3
A kind of high storage stability rubber and plastic alloy asphalt modifier, the component including following mass fraction: 70 parts of rubber powder,
7 parts of the waste plastic of polyethylene, 0.1 part of glucuronic acid, 20 parts of dimethyl silicone polymer, 10 parts of polyether epoxy, graphite
0.01 part of alkene powder.It is prepared by the following method to obtain:
(1) waste old is removed into metal, fiber and sundries, is then broken into the short grained cotton-shaped rubber of 40 purposes
Powder, density 1.0-1.3kg/m3, impurity content is less than 1%, and tenor is less than 0.5%；
(2) activation desulfurization regeneration is carried out by the cotton-shaped rubber powder that microwave radiation obtains step (1), microwave radiation frequencies are
900-1000MHz, microwave power 85kW, time 3min；
(3) additive is placed in 140 DEG C of baking ovens by being sufficiently mixed and conserves 1h, then modifying agent is at the uniform velocity poured into
In double screw extruder, extrusion temperature is 180 DEG C, revolving speed 200r/min；
(4) the rubber powder stretching and granulation squeezed out extruder using strand granulator is spare；
(5) matrix pitch is heated to 175 DEG C, is warming up to 195 DEG C after the modified glue powder particle of different addition quantity preparation is added,
After the rotating speed cutting 60min of 3500r/min, 160 DEG C of development 1h of baking oven are put into up to modified pitch.
Analysis measurement, measurement result ginseng are carried out to the storage stability of the obtained rubber and plastic alloy modified pitch of embodiment 1-3
It is shown in Table 1:
1 rubber and plastic alloy modified pitch storage stability of table
| Top softening point/DEG C | Lower part softening point/DEG C | The difference of softening point/DEG C | |
| Embodiment 1 | 65.5 | 63.0 | 2.5 |
| Embodiment 2 | 60.0 | 61.5 | 1.5 |
| Embodiment 3 | 67.5 | 65.5 | 2.0 |
The storage stability for the modified pitch that 1-3 of the embodiment of the present invention is prepared: 190 DEG C, static storage 48h is gone
Surface and bottom material test softening point difference, aberrations in property rate is less than 5%.
A large amount of waste rubber powders are added in pitch and are mixed with high concentration through high speed shear and high temperature by the embodiment of the present invention
The good waste rubber powder asphalt modifier of high-temperature storage stability, compatilizer, activator and waste rubber powder are uniformly mixed, lead to
It is added in matrix pitch after crossing extruder extruding pelletization, is prepared for the modified drip of the preferable waste rubber powder of high-temperature storage stability
Blueness, the main purpose of extrusion are exactly to pass through extruder to carry out waste rubber powder from heat, oxygen, high temperature, machinery and physics, chemical terms
Processing, enables waste rubber powder partial activation or degradation.
By the study found that the addition of rubber and plastic alloy modifying agent makes the performance of waste and old rubber modified pitch better than waste old
Modified pitch, as a result referring to table 2.
The comparison of 2 performance of modified bitumen of table
2 data of table can illustrate the rubber pitch modifier being prepared according to the method described in the present invention, rubber powder portion
Dividing can dissolve each other with matrix pitch, have good compatibility.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.For device disclosed in embodiment
For, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is said referring to method part
It is bright.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (9)
1. a kind of high storage stability rubber and plastic alloy asphalt modifier, which is characterized in that the component including following mass fraction: rubber
60~70 parts of rubber powder, 5~7 parts of waste plastic, 0.05~0.1 part of glucuronic acid, 15~20 parts of dimethyl silicone polymer, polyethers
8~10 parts and 0.00005~0.01 part of graphene powder of epoxy resin.
2. a kind of high storage stability rubber and plastic alloy asphalt modifier according to claim 1, which is characterized in that the rubber
Rubber powder mesh number is 30~40 mesh, and density is 1.0~1.3kg/m3, impurity content is less than 1%, and tenor is less than 0.5%.
3. a kind of high storage stability rubber and plastic alloy asphalt modifier according to claim 1, which is characterized in that described useless
Abandon the waste plastic that plastics are polyethylene.
4. a kind of preparation side of high storage stability rubber and plastic alloy asphalt modifier according to claim 1-3
Method, which comprises the following steps:
(1) waste old is removed into metal, fiber and sundries, is then broken into short grained cotton-shaped rubber powder；
(2) activation desulfurization regeneration is carried out by the rubber powder that microwave radiation obtains step (1), obtains activating rubber powder；
(3) by activating rubber powder and waste plastic, glucuronic acid, dimethyl silicone polymer, polyether epoxy and graphene
Powder is dry by being sufficiently mixed, and extruding pelletization is to get arriving rubber alloy asphalt modifier；
(4) matrix pitch is heated, rubber alloy asphalt modifier is added, heating, high speed shear, drying is to get modified pitch.
5. a kind of preparation method of high storage stability rubber and plastic alloy asphalt modifier according to claim 4, feature
It is, step activates desulfurization regeneration described in (2) are as follows: mix the distilled water that rubber powder investment volume ratio is 1:1 with sodium hypochlorite
It closes in solution, stirs 1~2h under the conditions of 50~80 DEG C after mixing evenly, after reaction filter rubber powder, it is placed in 105~
It dries in 110 DEG C of baking ovens to water content≤5%.
6. a kind of preparation method of high storage stability rubber and plastic alloy asphalt modifier according to claim 4, feature
It is, the microwave frequency of microwave radiation described in step (2) is 900-1000MHz, and power is 75~85kW, the time is 1~
3min。
7. a kind of preparation method of high storage stability rubber and plastic alloy asphalt modifier according to claim 4, feature
It is, drying temperature described in step (3) is 130~140 DEG C, and the time is 1~1.5h.
8. a kind of preparation method of high storage stability rubber and plastic alloy asphalt modifier according to claim 4, feature
It is, the extrusion temperature of extruding pelletization described in step (3) is 180~185 DEG C, and revolving speed is 200~250r/min.
9. a kind of preparation method of high storage stability rubber and plastic alloy asphalt modifier according to claim 4, feature
It is, step (4) is to heat matrix pitch, and the rubber alloy asphalt modifier of volume 18% is added, is warming up to 175~195
DEG C, with revolving speed 60~90min of high speed shear of 3500~4000r/min, 140~160 DEG C at a temperature of it is dry 60~
80min is to get modified pitch.
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Effective date of registration: 20191024 Address after: 100020 Beijing, Guanzhuang, Chaoyang District, Zhou Applicant after: CHINA FIRST HIGHWAY ENGINEERING Co.,Ltd. Applicant after: NO.2 ENGINEERING CO., LTD. OF CCCC FIRST HIGHWAY ENGINEERING Co.,Ltd. Address before: 850000 Tama community, Chengguan District, Lhasa City, Tibet Autonomous Region Applicant before: Yao chess |
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