CN107418231A - A kind of durable modified pitch of antiskid and preparation method - Google Patents
A kind of durable modified pitch of antiskid and preparation method Download PDFInfo
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- CN107418231A CN107418231A CN201710712882.8A CN201710712882A CN107418231A CN 107418231 A CN107418231 A CN 107418231A CN 201710712882 A CN201710712882 A CN 201710712882A CN 107418231 A CN107418231 A CN 107418231A
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- antiskid
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
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- 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
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- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Road Paving Structures (AREA)
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Abstract
The invention provides a kind of durable modified pitch of antiskid and preparation method, in terms of parts by weight, is made up of following raw material：Pitch is 100 parts, and rare-earth tungstate is 10 parts, and polyether-ether-ketone is 15~30 parts, and boronic acid containing isophthalic PAEK is 3 parts.The present invention is modified using high polymer material polyether-ether-ketone and negative thermal expansion material rare-earth tungstate to asphalt, so that the modified pitch coefficient of expansion prepared diminishes, and there is excellent anti-wear performance, for pavement skid resistance condition and durability can be significantly improved after bituminous paving.So that the asphalt summer prepared is not easy bellding, winter is not easy to crack, and anti-wear performance is good.
Description
Technical field
The invention belongs to pavement material field, be related to modified pitch, and in particular to a kind of durable modified pitch of antiskid and
Preparation method.
Background technology
Compared with other types road surface, bituminous paving is because having surfacing, and seamless is with small vibration, and noise is low, and driving is flat
Surely comfortably, it is widely used in the advantages that simple maintenance in the road construction in China.But due to asphalt material thermal expansion
Coefficient ratio is larger, and generally, temperature often rises 15 degree, and the volume of pitch will increase by 1%.The summer temperature on road surface is very high,
The volume of pitch will increase more than 3%, if the residual porosities of compound are not enough to accommodate pitch, it may occur that bellding, it is serious to reduce
Pavement skid resistance condition；The pavement temperature in winter is relatively low, if pitch volume contraction in the presence of low temperature is excessive, bituminous paving meeting
Shrinkage cracking；Simultaneously as the attrition repeatedly of vehicular load, if road surface wearability is insufficient, can also make pavement skid resistance condition
It is greatly lowered.
Generally solve the above problems mainly by optimizing the design of road surface voidage and ensureing pavement compaction intensity and close
Degree, and antiskid performance caused by solving bituminous paving summer bellding and abrasion by designing composition and construction etc. is not enough to
And the ability of cold cracking problem is limited, and the voidage excessive in design can bring purt to starch again, pit, passage,
The problems such as gathering around bag, therefore, the modification of pitch is necessary.
The content of the invention
In view of the deficienciess of the prior art, it is an object of the present invention to provide a kind of durable modified pitch of antiskid and
Preparation method, improve bituminous paving antiskid performance deficiency and winter problem of Cracking caused by summer bellding and abrasion, improve drip
The antiskid performance and durability on blue or green road surface.
In order to solve the above-mentioned technical problem, the present invention, which adopts the following technical scheme that, is achieved：
A kind of durable modified pitch of antiskid, including following raw material are made：Pitch, rare-earth tungstate, polyether-ether-ketone and contain
Boric acid isophthalic PAEK.
The present invention also has following distinguishing feature：
In terms of parts by weight, it is made up of following raw material：Pitch is 100 parts, and rare-earth tungstate is 10~25 parts, polyether-ether-ketone
For 15~30 parts, boronic acid containing isophthalic PAEK is 2~6 parts.
Preferably, in terms of parts by weight, it is made up of following raw material：Pitch is 100 parts, and rare-earth tungstate is 10 parts, polyethers
Ether ketone is 15~30 parts, and boronic acid containing isophthalic PAEK is 3 parts.
It is furthermore preferred that in terms of parts by weight, it is made up of following raw material：Pitch is 100 parts, and rare-earth tungstate is 10 parts, is gathered
Ether ether ketone is 20 parts, and boronic acid containing isophthalic PAEK is 3 parts.
Described rare-earth tungstate is Sc2W3O12, Lu2W3O12Or Y2W3O12。
Described polyether-ether-ketone can use waste and old polyether-ether-ketone to replace.
The structural formula of described boronic acid containing isophthalic PAEK is
In formula：X=0.20~0.25, y=0.15~0.20, z=0.13~0.15, t=0.40~0.60, m be more than
Integer equal to 5.
Preferably, x=0.23, y=0.16, z=0.15, t=0.46, m=8.
The preparation method of the durable modified pitch of antiskid as described above is carried out according to the following steps：
Step 1, pitch is weighed by material rate, rare-earth tungstate is standby；
Step 2, polyether-ether-ketone is mixed with boronic acid containing isophthalic PAEK, crushed using Universalpulverizer, control mixing
The maximum particle diameter of thing cannot be greater than 2.36mm；
Step 3, pitch is heated to 150~200 DEG C in a kettle, rare-earth tungstate is added to the drip after heating
In green grass or young crops, mixing speed is 60~120r/min, mixing time 5~10 minutes；
Step 4, the mixture of the polyether-ether-ketone crushed made from step 2 and boronic acid containing isophthalic PAEK is added
In pitch after heating, it is stirred under 1000r/min stir speed (S.S.), mixing time is 30~60 minutes, obtains antiskid
Durable modified pitch.
The present invention compared with prior art, has the following technical effect that：
(I) present invention is entered using high polymer material polyether-ether-ketone and negative thermal expansion material rare-earth tungstate to asphalt
Row is modified so that the modified pitch coefficient of expansion prepared diminishes, and has excellent anti-wear performance, after bituminous paving
Pavement skid resistance condition and durability can be significantly improved.So that the asphalt summer prepared is not easy bellding, winter is not easy out
Split, anti-wear performance is good；And rare-earth tungstate can produce reciprocation after being mixed as a kind of inorganic filler, and polyether-ether-ketone,
Improve polyether-ether-ketone anti-wear performance, and the hybrid particles under this action of coupling agents of boronic acid containing isophthalic PAEK with drip
Colloid in blue or green colloid is mutually affine, forms a kind of space net structure of stabilization, improves the stability of pitch so for preparing
After the pitch gone out is used for bituminous paving, its antiskid performance and durability are obviously improved.
(II) rare-earth tungstate in the present invention can significantly improve the anti-wear performance of polyether-ether-ketone as a kind of inorganic filler,
Improve durability of asphalt pavement.
(III) the boronic acid containing isophthalic PAEK in the present invention is remarkably improved polyether-ether-ketone as a kind of high-quality coupling agent
High-temperature behavior, and make rare-earth tungstate and polyether-ether-ketone mixture and the colloid in pitch colloid mutually affine, formed a kind of
Stable space net structure so that the Stability of Asphalt Concrete Pavement and durability prepared significantly increase.
(IV) after the modified pitch in the present invention is used for bituminous paving, voidage can be suitably reduced, effectively avoids pitch from mixing
Material Moisture Damage is closed, substantially increases the durability of bituminous paving.
(V) present invention can effectively handle waste and old polyether-ether-ketone, be added into asphalt, can reduce making for pitch
With, it is cost-effective, turn waste into wealth.
Explanation is further explained in detail to the particular content of the present invention with reference to embodiments.
Embodiment
Above-mentioned technical proposal is deferred to, specific embodiment of the invention given below is, it is necessary to which explanation is the present invention not office
It is limited to specific examples below, all equivalents done on the basis of technical scheme each fall within the protection model of the present invention
Enclose.
It should be noted that in following embodiments：
Pitch uses 90# matrix pitches, in actual applications, can be substituted as the case may be by other model pitches.
Polyether-ether-ketone can use waste and old polyether-ether-ketone to replace.
The structural formula of boronic acid containing isophthalic PAEK is as follows：
In formula：X=0.20~0.25, y=0.15~0.20, z=0.13~0.15, t=0.40~0.60, m be more than
Integer equal to 5.
Preferably, x=0.23, y=0.16, z=0.15, t=0.46, m=8.
The preparation technology route of the compound is：Using 4,4- difluoro benzophenones and resorcinol as reactant, pass through
Nucleophilic displacement of fluorine polycondensation reaction, it is made after metaphenylene PAEK with joining boric acid pinacol, [IrCl (COD)]2, bis- tertiary fourths of 4,4-
The metaphenylene PAEK of boronic acid containing fat is made in base -2,2- bipyridyl constant temperature 24h in the tetrahydrochysene full of nitrogen is barked and muttered, and finally will
The metaphenylene PAEK of boronic acid containing fat stirs in dioxane with sodium metaperiodate and boronic acid containing isophthalic PAEK is made.
Embodiment 1：
The present embodiment provides a kind of durable modified pitch of antiskid, in terms of parts by weight, is made up of following raw material：Pitch is
100 parts, rare-earth tungstate is 10 parts, and polyether-ether-ketone is 15 parts, and boronic acid containing isophthalic PAEK is 3 parts.
Rare-earth tungstate in the present embodiment is Sc2W3O12。
Polyether-ether-ketone in the present embodiment can use waste and old polyether-ether-ketone to replace.
The preparation method of the durable modified pitch of the antiskid of the present embodiment, is carried out according to the following steps：
Step 1, pitch is weighed by material rate, rare-earth tungstate is standby；
Step 2, polyether-ether-ketone is mixed with boronic acid containing isophthalic PAEK, crushed using Universalpulverizer, control mixing
The maximum particle diameter of thing cannot be greater than 2.36mm；
Step 3, pitch is heated to 150~200 DEG C in a kettle, rare-earth tungstate is added to the drip after heating
In green grass or young crops, mixing speed is 60~120r/min, mixing time 5~10 minutes；
Step 4, the mixture of the polyether-ether-ketone crushed made from step 2 and boronic acid containing isophthalic PAEK is added
In pitch after heating, it is stirred under 1000r/min stir speed (S.S.), mixing time is 30~60 minutes, obtains antiskid
Durable modified pitch.
Embodiment 2：
The present embodiment provides a kind of durable modified pitch of antiskid, in terms of parts by weight, is made up of following raw material：Pitch is
100 parts, rare-earth tungstate is 10 parts, and polyether-ether-ketone is 20 parts, and boronic acid containing isophthalic PAEK is 3 parts.
Rare-earth tungstate in the present embodiment is Sc2W3O12。
The preparation method of the durable modified pitch of the antiskid of the present embodiment is substantially the same manner as Example 1.
Embodiment 3：
The present embodiment provides a kind of durable modified pitch of antiskid, in terms of parts by weight, is made up of following raw material：Pitch is
100 parts, rare-earth tungstate is 10 parts, and polyether-ether-ketone is 30 parts, and boronic acid containing isophthalic PAEK is 3 parts.
Rare-earth tungstate in the present embodiment is Sc2W3O12。
The preparation method of the durable modified pitch of the antiskid of the present embodiment is substantially the same manner as Example 1.
Embodiment 4：
The present embodiment provides a kind of durable modified pitch of antiskid, in terms of parts by weight, is made up of following raw material：Pitch is
100 parts, rare-earth tungstate is 10 parts, and polyether-ether-ketone is 20 parts, and boronic acid containing isophthalic PAEK is 3 parts.
Rare-earth tungstate in the present embodiment is Lu2W3O12。
The preparation method of the durable modified pitch of the antiskid of the present embodiment is substantially the same manner as Example 1.
Embodiment 5：
The present embodiment provides a kind of durable modified pitch of antiskid, in terms of parts by weight, is made up of following raw material：Pitch is
100 parts, rare-earth tungstate is 10 parts, and polyether-ether-ketone is 20 parts, and boronic acid containing isophthalic PAEK is 3 parts.
Rare-earth tungstate in the present embodiment is Y2W3O12。
The preparation method of the durable modified pitch of the antiskid of the present embodiment is substantially the same manner as Example 1.
Comparative example 1：
This comparative example provides a kind of modified pitch, in terms of parts by weight, is made up of following raw material：Pitch is 100 parts, boracic
Sour isophthalic PAEK is 3 parts.
The preparation method of the modified pitch of this comparative example is substantially the same manner as Example 1.
Comparative example 2：
This comparative example provides a kind of modified pitch, in terms of parts by weight, is made up of following raw material：Pitch is 100 parts, rare earth
Tungstates is 10 parts, and boronic acid containing isophthalic PAEK is 3 parts.
Rare-earth tungstate in the present embodiment is Sc2W3O12。
The preparation method of the modified pitch of this comparative example is substantially the same manner as Example 1.
Comparative example 3：
This comparative example provides a kind of modified pitch, in terms of parts by weight, is made up of following raw material：Pitch is 100 parts, polyethers
Ether ketone is 20 parts, and boronic acid containing isophthalic PAEK is 3 parts.
The preparation method of the modified pitch of this comparative example is substantially the same manner as Example 1.
In order to verify the change of the thermal coefficient of expansion of pavement performance and the modified pitch, to present example 1~5 and
Comparative example carries out dependence test, and test result is as follows：
(1) pavement performance is tested：
According to《Highway engineering pitch and Asphalt Mixture Experiment code》(JTG E20-2011) is modified the base of pitch
This pavement performance is tested.
The pitch three norms test result of table 1
It can be seen from table 1, pitch three norms are analyzed, modified pitch needle penetration is equal without too big change, ductility and softening point
The raising that increases is compared with plain asphalt, modified pitch thermal coefficient of expansion is greatly lowered, so when temperature becomes
During change, pitch volumetric expansion, which has, significantly to be reduced, and is understood that modified Bituminous stabilized increases in summary, is shown
Excellent pavement performance.
(2) antiskid performance test：
This experiment pitch uses 90# Kelamayis matrix pitch, and coarse aggregate uses basalt, and fine aggregate is using clean day
Right river sand, filler are levigate limestone, grading SMA-13, pitch mixing are prepared using the modified pitch in embodiment 1~5
Material, numbering I~V, the asphalt for using the modified pitch in comparative example 1~3 to prepare are numbered as VI~VIII.Based on interior
Accelerating and loading experimental determines pavement skid resistance condition index under different number of loading, and test result is as follows：
The asphalt antiskid performance laboratory experiment test result of table 2
It can be seen from table 2, contrast modified asphalt mixture I~V and comparative example VI~VIII is understood, both antiskid initial value phases
It is poor little, but modified asphalt mixture antiskid final value is more than comparative example asphalt, and the antiskid performance rate of decay is small.Specifically
, modified asphalt mixture I~V and comparative example VI contrasts understand that the modified asphalt mixture antiskid performance rate of decay is substantially small
In comparative example VI, and antiskid final value is significantly greater than comparative example VI；Knowable to modified asphalt mixture I~V and comparative example VII contrasts,
The modified asphalt mixture antiskid performance rate of decay is respectively less than comparative example VII, and antiskid final value is all higher than comparative example VII；It is modified
Asphalt I~V and comparative example VIII contrasts understand that the modified asphalt mixture antiskid performance rate of decay is respectively less than comparative example
VIII, and antiskid final value is all higher than comparative example VIII.Comparative example VI~VIII antiskid performance superiority-inferiorities are ordered as：VIII>VII>
VI.Therefore it may be concluded that modified pitch is used for into bituminous paving, the road surface has good antiskid performance and durable
Property；And rare-earth tungstate and polyether-ether-ketone generate synergy in modifying process, the antiskid on road surface is further increased
Performance and durability.
Claims (9)
1. the durable modified pitch of a kind of antiskid, it is characterised in that be made including following raw material：Pitch, rare-earth tungstate, polyethers
Ether ketone and boronic acid containing isophthalic PAEK.
2. the durable modified pitch of antiskid as claimed in claim 1, it is characterised in that in terms of parts by weight, by following raw material
It is made：Pitch is 100 parts, and rare-earth tungstate is 10~25 parts, and polyether-ether-ketone is 15~30 parts, and boronic acid containing isophthalic PAEK is
2~6 parts.
3. the durable modified pitch of antiskid as claimed in claim 2, it is characterised in that in terms of parts by weight, by following raw material
It is made：Pitch is 100 parts, and rare-earth tungstate is 10 parts, and polyether-ether-ketone is 15~30 parts, and boronic acid containing isophthalic PAEK is 3 parts.
4. the durable modified pitch of antiskid as claimed in claim 3, it is characterised in that in terms of parts by weight, by following raw material
It is made：Pitch is 100 parts, and rare-earth tungstate is 10 parts, and polyether-ether-ketone is 20 parts, and boronic acid containing isophthalic PAEK is 3 parts.
5. the durable modified pitch of antiskid as claimed in claim 2, it is characterised in that described rare-earth tungstate is
Sc2W3O12, Lu2W3O12Or Y2W3O12。
6. the durable modified pitch of antiskid as claimed in claim 2, it is characterised in that described polyether-ether-ketone can use useless
Old polyether-ether-ketone is replaced.
7. the durable modified pitch of antiskid as claimed in claim 2, it is characterised in that described boronic acid containing isophthalic PAEK
Structural formula be：
In formula：X=0.20~0.25, y=0.15~0.20, z=0.13~0.15, t=0.40~0.60, m are more than or equal to 5
Integer.
8. the durable modified pitch of antiskid as claimed in claim 7, it is characterised in that in formula：X=0.23, y=0.16, z=
0.15, t=0.46, m=8.
9. the preparation method of the durable modified pitch of antiskid as described in claim 2 to 8 any claim, its feature exist
In carrying out according to the following steps：
Step 1, pitch is weighed by material rate, rare-earth tungstate is standby；
Step 2, polyether-ether-ketone is mixed with boronic acid containing isophthalic PAEK, is crushed using Universalpulverizer, controls mixture
Maximum particle diameter cannot be greater than 2.36mm；
Step 3, pitch is heated to 150~200 DEG C in a kettle, rare-earth tungstate is added in the pitch after heating,
Mixing speed is 60~120r/min, mixing time 5~10 minutes；
Step 4, the mixture of the polyether-ether-ketone crushed made from step 2 and boronic acid containing isophthalic PAEK is added and heated
In pitch afterwards, it is stirred under 1000r/min stir speed (S.S.), mixing time is 30~60 minutes, and it is durable to obtain antiskid
Modified pitch.
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Cited By (1)
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| CN108329704A (en) * | 2018-02-09 | 2018-07-27 | 山东星火科学技术研究院 | A kind of durable rubber asphalt and preparation method thereof |
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