CN104710805B - A kind of environment-friendly modified pitch and preparation method thereof - Google Patents
A kind of environment-friendly modified pitch and preparation method thereof Download PDFInfo
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- CN104710805B CN104710805B CN201510117390.5A CN201510117390A CN104710805B CN 104710805 B CN104710805 B CN 104710805B CN 201510117390 A CN201510117390 A CN 201510117390A CN 104710805 B CN104710805 B CN 104710805B
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Abstract
The invention provides a kind of environment-friendly modified pitch and preparation method thereof, the modified pitch includes the component of following parts by weight, 100 parts of pitch, 3~10 parts of forsterite powder, 1~5 part of yttrium aluminium garnet fibers, 1~5 part of styrene-acrylic resin, 0.5~2.2 part of dibenzalacetone, 0.2~1.4 part of hydroquinones, 2~7 parts of polyisobutene succinimide.Environment-friendly modified pitch of the present invention, while bitumen properties are obviously improved, have the multiple environment effect such as flame-retardant smoke inhibition, hot-mix emission reduction concurrently, meet low-carbon environment-friendly, safe and reliable green traffic construction requirements, the sustainable development of society can be promoted.It is pollution-free in production preparation process and the raw material sources used are extensively, with good economic benefit.
Description
Technical field
The invention belongs to technical field of road engineering materials, more particularly, to a kind of environment-friendly modified pitch and its system
Preparation Method.
Background technology
Currently, country greatly develops low-carbon economy, built environment friendly society, and green traffic system it is also proposed more
High requirement, promotes road traffic to develop to low-carbon environment-friendly, safe and reliable direction, improves road construction quality, it has also become new
Historic mission.With the fast development of China's road construction, asphalt concrete pavement is due to antiskid is wear-resisting, driving is relaxed
It is suitable, noise is low, gradually replace cement concrete pavement the advantages of be easy to construction and maintenance, the dominant form as road surface.But pass
Unite bituminous paving summer high temperature when rut phenomenon is serious, winter low temperature when it is easy to crack, its pavement performance is had a strong impact on, while traditional
Asphalt material easily trickling in the case where carrying out that large quantity of exhaust gas and flue dust, high temperature can be discharged when heat mixes making is even burnt, with low-carbon, ring
Protect, the Green Traffic Idea pole of safety is not consistent.Therefore, need a kind of environment-friendly modified pitch of exploitation badly, make it obvious
While improving bitumen properties, have low-carbon environment-friendly concurrently, the multiple environment effect such as safe and reliable, promote the sustainable development of society
Exhibition.
The content of the invention
In view of this, the present invention is directed to propose a kind of environment-friendly modified pitch and preparation method thereof, the modified pitch
While bitumen properties are obviously improved, low-carbon environment-friendly is had concurrently, the multiple environment effect such as safe and reliable, with good resistance
Combustion suppression cigarette, hot-mix emission reduction performance, and preparation is simple, cost is relatively low, suitably being promoted as a kind of environment-friendly modified pitch makes
With.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
A kind of environment-friendly modified pitch, includes the component of following parts by weight, 100 parts of pitch, and forsterite powder 3~
10 parts, 1~5 part of yttrium aluminium garnet fibers, 1~5 part of styrene-acrylic resin, 0.5~2.2 part of dibenzalacetone, hydroquinones 0.2~
1.4 parts, 2~7 parts of polyisobutene succinimide.
It is preferred that, include the component of following parts by weight, 100 parts of pitch, 5~8 parts of forsterite powder, yttrium-aluminium-garnet is fine
2~4 parts of dimension, 2~4 parts of styrene-acrylic resin, 1.2~1.8 parts of dibenzalacetone, 0.6~1.1 part of hydroquinones, polyisobutene fourth
3~6 parts of imidodicarbonic diamide.
It is preferred that, include the component of following parts by weight, 100 parts of pitch, 6 parts of forsterite powder, yttrium aluminium garnet fibers 3
Part, 3.5 parts of styrene-acrylic resin, 1.4 parts of dibenzalacetone, 0.8 part of hydroquinones, 5 parts of polyisobutene succinimide.
It is preferred that, the particle diameter of the forsterite powder is 30nm~1mm.
It is preferred that, the particle diameter of the forsterite powder is 5 μm~100 μm.
It is preferred that, the particle diameter of the forsterite powder is 20 μm.
It is preferred that, the yttrium aluminium garnet fibers length is 25 μm~28 μm.
It is preferred that, the pitch is one kind in matrix pitch, SBS modified pitch or rubber modified asphalt.
Present invention also offers a kind of method for preparing environment-friendly modified pitch as described above, including following step
Suddenly,
(1) forsterite powder, yttrium aluminium garnet fibers are added mass concentration in 25%~35% ethanol solution, to stir
Mix and styrene-acrylic resin, dibenzalacetone and hydroquinones added after 5~15min, and with high-speed shearing machine 300r/min~
10~20min is stirred under 400r/min shear rates, polyisobutene succinimide is then added, reuses high-speed shearing machine
1h~3h is stirred under 400r/min~500r/min shear rates；
(2) step (1) described mixture is heated to 15~35 DEG C, and keeps 1~2h that ethanol, gained mixture is evaporated off
It is positioned in baking oven and dries, keeps 100 DEG C~110 DEG C constant temperature, 4h~6h；
(3) pitch is heated to 130 DEG C~150 DEG C, is maintained at molten condition, and add by mixing that step (2) is handled
In compound, asphalt mixture is obtained；
(4) use high-speed shearing machine by the asphalt mixture obtained in step (3) 1000r/min~2000r/min's
Low velocity shear 20min~40min under shear rate, the then high speed shear under 3500r/min~4500r/min shear rate
15min~30min.
Present invention provides application of the environment-friendly modified pitch in road engineering material as described above.
Relative to prior art, environment-friendly modified pitch of the present invention has the advantage that：
(1) environment-friendly modified pitch of the present invention, its main component has forsterite powder and yttrium-aluminium-garnet
Fiber, both have good high-temperature stability and fire resistance；Styrene-acrylic resin and hydroquinones have stronger corrosion resistance；
Dibenzalacetone is surfactant, and polyisobutene succinimide is dispersant, can significantly improve forsterite powder and
Dispersiveness of the yttrium aluminium garnet fibers in pitch, and improve its adhesive capacity with pitch.
(2) environment-friendly modified pitch of the present invention, while bitumen properties are obviously improved, has resistance concurrently
Combustion suppression cigarette, the multiple environment effect such as hot-mix emission reduction, meet low-carbon environment-friendly, safe and reliable green traffic construction requirements, can promote
The sustainable development of society.
(3) environment-friendly modified pitch of the present invention, the raw material sources of use extensively, are produced in preparation process
It is pollution-free.
(4) preparation method of environment-friendly modified pitch of the present invention, technique is simple, cost is low, with good
Economic benefit.
Embodiment
It should be noted that in the case where not conflicting, the embodiment in the present invention and the feature in embodiment can phases
Mutually combination.The present invention is described in detail with reference to embodiment.
Embodiment one
A kind of environment-friendly modified pitch, includes the component of following parts by weight, 100 parts of matrix pitch, forsterite
6 parts of powder, 3 parts of yttrium aluminium garnet fibers, 3.5 parts of styrene-acrylic resin, 1.4 parts of dibenzalacetone, 0.8 part of hydroquinones, poly- isobutyl
5 parts of alkene succimide.Wherein, the forsterite powder footpath be 20 μm, yttrium aluminium garnet fibers length be 25 μm~28 μm.
The preparation method of the environment-friendly modified pitch of the present embodiment, comprises the following steps：
(1) by the forsterite powder of above-mentioned number, yttrium aluminium garnet fibers add mass concentration be 25% ethanol solution in,
Styrene-acrylic resin, dibenzalacetone and hydroquinones are added after artificial stirring 5min, and is cut with high-speed shearing machine in 400r/min
10min is stirred under cutting speed rate, polyisobutene succinimide is then added, high-speed shearing machine is reused and is sheared in 400r/min
1h is stirred under speed；
(2) step (1) described mixture is heated to 20 DEG C, and keeps 1h so that ethanol is evaporated off, gained mixture is positioned over
Dried in baking oven, keep 100 DEG C~110 DEG C constant temperature 5h；
(3) pitch is heated to 140 DEG C, is maintained at molten condition, and added in the mixture handled by step (2),
Obtain asphalt mixture；
(4) using high-speed shearing machine by the asphalt mixture obtained in step (3) under 1500r/min shear rate it is low
Speed shears 30min, then the high speed shear 20min under 4500r/min shear rate.
Embodiment two
A kind of environment-friendly modified pitch, includes the component of following parts by weight, 100 parts of matrix pitch, forsterite
10 parts of powder, 1 part of yttrium aluminium garnet fibers, 2 parts of styrene-acrylic resin, 0.5 part of dibenzalacetone, 1.4 parts of hydroquinones, polyisobutene
7 parts of succimide.Wherein, the forsterite powder footpath be 100 μm, yttrium aluminium garnet fibers length be 25 μm~28 μm.
The preparation method of the environment-friendly modified pitch of the present embodiment, comprises the following steps：
(1) the forsterite powder of above-mentioned number, yttrium aluminium garnet fibers are added into the ethanol solution that mass concentration is 25%
In, styrene-acrylic resin, dibenzalacetone and hydroquinones are added after artificial stirring 10min, and with high-speed shearing machine in 300r/
15min is stirred under min shear rates, polyisobutene succinimide is then added, high-speed shearing machine is reused in 500r/
3h is stirred under min shear rates；
(2) step (1) described mixture is heated to 25 DEG C, and keeps 2h so that ethanol is evaporated off, gained mixture is positioned over
Dried in baking oven, keep 100 DEG C~110 DEG C constant temperature 4h；
(3) pitch is heated to 140 DEG C, is maintained at molten condition, and added in the mixture handled by step (2),
Obtain asphalt mixture；
(4) using high-speed shearing machine by the asphalt mixture obtained in step (3) under 1800r/min shear rate it is low
Speed shears 25min, then the high speed shear 25min under 4500r/min shear rate.
Embodiment three
A kind of environment-friendly modified pitch, includes the component of following parts by weight, 100 parts of matrix pitch, forsterite
5 parts of powder；5 parts of yttrium aluminium garnet fibers；1 part of styrene-acrylic resin；1.2 parts of dibenzalacetone；0.6 part of hydroquinones；Polyisobutene
5.5 parts of succimide.Wherein, the forsterite powder footpath is that 1mm, yttrium aluminium garnet fibers length are 25 μm~28 μm.
The preparation method of the environment-friendly modified pitch of the present embodiment, comprises the following steps：
(1) the forsterite powder of above-mentioned number, yttrium aluminium garnet fibers are added into the ethanol solution that mass concentration is 35%
In, styrene-acrylic resin, dibenzalacetone and hydroquinones are added after artificial stirring 8min, and with high-speed shearing machine in 300r/min
17min is stirred under shear rate, polyisobutene succinimide is then added, high-speed shearing machine is reused and is cut in 500r/min
1.5h is stirred under cutting speed rate；
(2) step (1) described mixture is heated to 30 DEG C, and keeps 2h so that ethanol is evaporated off, gained mixture is positioned over
Dried in baking oven, keep 100 DEG C~110 DEG C constant temperature 4h；
(3) pitch is heated to 130 DEG C, is maintained at molten condition, and added in the mixture handled by step (2),
Obtain asphalt mixture；
(4) using high-speed shearing machine by the asphalt mixture obtained in step (3) under 1000r/min shear rate it is low
Speed shears 20min, then the high speed shear 30min under 4000r/min shear rate.
Example IV
A kind of environment-friendly modified pitch, includes the component of following parts by weight, 100 parts of matrix pitch, forsterite
3 parts of powder；4 parts of yttrium aluminium garnet fibers；5 parts of styrene-acrylic resin；2.2 parts of dibenzalacetone；0.2 part of hydroquinones；Polyisobutene
3 parts of succimide.Wherein, the forsterite powder footpath is that 30nm, yttrium aluminium garnet fibers length are 25 μm~28 μm.
The preparation method of the environment-friendly modified pitch of the present embodiment, comprises the following steps：
(1) the forsterite powder of above-mentioned number, yttrium aluminium garnet fibers are added into the ethanol solution that mass concentration is 35%
In, styrene-acrylic resin, dibenzalacetone and hydroquinones are added after artificial stirring 5min, and with high-speed shearing machine in 400r/min
20min is stirred under shear rate, polyisobutene succinimide is then added, high-speed shearing machine is reused and is cut in 500r/min
1h is stirred under cutting speed rate；
(2) step (1) described mixture is heated to 35 DEG C, and keeps 2h so that ethanol is evaporated off, gained mixture is positioned over
Dried in baking oven, keep 100 DEG C~110 DEG C constant temperature 5h；
(3) pitch is heated to 150 DEG C, is maintained at molten condition, and added in the mixture handled by step (2),
Obtain asphalt mixture；
(4) using high-speed shearing machine by the asphalt mixture obtained in step (3) under 2000r/min shear rate it is low
Speed shears 20min, then the high speed shear 30min under 4000r/min shear rate.
Embodiment five
A kind of environment-friendly modified pitch, includes the component of following parts by weight, 100 parts of matrix pitch；Forsterite
10 parts of powder；2 parts of yttrium aluminium garnet fibers；4 parts of styrene-acrylic resin；1.8 parts of dibenzalacetone；0.8 part of hydroquinones；Polyisobutene
6 parts of succimide.Wherein, the forsterite powder footpath be 5 μm, yttrium aluminium garnet fibers length be 25 μm~28 μm.
The preparation method of the environment-friendly modified pitch of the present embodiment, comprises the following steps：
(1) the forsterite powder of above-mentioned number, yttrium aluminium garnet fibers are added into the ethanol solution that mass concentration is 25%
In, styrene-acrylic resin, dibenzalacetone and hydroquinones are added after artificial stirring 12min, and with high-speed shearing machine in 300r/
15min is stirred under min shear rates, polyisobutene succinimide is then added, high-speed shearing machine is reused in 400r/
3h is stirred under min shear rates；
(2) step (1) described mixture is heated to 24 DEG C, and keeps 1.5h so that ethanol is evaporated off, gained mixture is placed
Dried in baking oven, keep 100 DEG C~110 DEG C constant temperature 4h；
(3) pitch is heated to 150 DEG C, is maintained at molten condition, and added in the mixture handled by step (2),
Obtain asphalt mixture；
(4) using high-speed shearing machine by the asphalt mixture obtained in step (3) under 1500r/min shear rate it is low
Speed shears 40min, then the high speed shear 15min under 4000r/min shear rate.
Embodiment six
A kind of environment-friendly modified pitch, includes the component of following parts by weight, 100 parts of matrix pitch；Forsterite
8 parts of powder；2 parts of yttrium aluminium garnet fibers；3 parts of styrene-acrylic resin；1.4 parts of dibenzalacetone；1.1 parts of hydroquinones；Polyisobutene
2 parts of succimide.Wherein, the forsterite powder footpath be 20 μm, yttrium aluminium garnet fibers length be 25 μm~28 μm.
The preparation method of the environment-friendly modified pitch of the present embodiment, comprises the following steps：
(1) the forsterite powder of above-mentioned number, yttrium aluminium garnet fibers are added into the second that mass concentration is 25%~25%
In alcoholic solution, styrene-acrylic resin, dibenzalacetone and hydroquinones are added after artificial stirring 14min, and existed with high-speed shearing machine
15min is stirred under 400r/min shear rates, polyisobutene succinimide is then added, high-speed shearing machine is reused and exists
2h is stirred under 400r/min shear rates；
(2) step (1) described mixture is heated to 35 DEG C, and keeps 1h so that ethanol is evaporated off, gained mixture is positioned over
Dried in baking oven, keep 100 DEG C~110 DEG C constant temperature 6h；
(3) pitch is heated to 140 DEG C, is maintained at molten condition, and added in the mixture handled by step (2),
Obtain asphalt mixture；
(4) using high-speed shearing machine by the asphalt mixture obtained in step (3) under 2000r/min shear rate it is low
Speed shears 20min, then the high speed shear 30min under 3500r/min shear rate.
To verify that the pavement performance and its flame-retardant smoke inhibition and heat of a kind of environment-friendly modified pitch of the present invention are mixed
Emission reduction effect, according to《Highway engineering pitch and Asphalt Mixture Experiment code》(JTGE20-2011) Asphalt Penetration, soft is carried out
Change the basic performance tests such as point, ductility；Reference《Plastics Combustion method for testing performance-oxygen index method》(GB/T2408-2008) enter
Row oxygen index test；Reference《The smoke density grade test method that construction material burns or decomposed》(GB/T 8627) carries out pitch
Cigarette absorptivity, smoke density experiment.
The specific test result of the embodiment of the present invention one~six is as shown in table 1 below：
A kind of performance test results of environment-friendly modified pitch of table 1
Experiment proves that the needle penetration of environment-friendly modified pitch of the present invention, softening point, ductility and oxygen index (OI) are equal
Meet《People's Republic of China's petroleum chemical industry standard》The requirement of (NB/SH/T 0820-2010), glance coal assimilation effect
Significantly, smoke density grade is respectively less than 75, and flue gas toxity grade is defined safe one-level (ZA1), reach the related request of country.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God is with principle, and any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (8)
1. a kind of environment-friendly modified pitch, it is characterised in that：Include the component of following parts by weight, 100 parts of pitch, magnesium olive
3 ~ 10 parts of olive stone flour, 1 ~ 5 part of yttrium aluminium garnet fibers, 1 ~ 5 part of styrene-acrylic resin, 0.5 ~ 2.2 part of dibenzalacetone,
0.2 ~ 1.4 part of hydroquinones, 2 ~ 7 parts of polyisobutene succinimide；The particle diameter of the forsterite powder be 30nm ~
1mm；The yttrium aluminium garnet fibers length is 25 μm ~ 28 μm.
2. environment-friendly modified pitch according to claim 1, it is characterised in that：Include the group of following parts by weight
Point, 100 parts of pitch, 5 ~ 8 parts of forsterite powder, 2 ~ 4 parts of yttrium aluminium garnet fibers, 2 ~ 4 parts of styrene-acrylic resin, dibenzylidene
1.2 ~ 1.8 parts of acetone, 0.6 ~ 1.1 part of hydroquinones, 3 ~ 6 parts of polyisobutene succinimide.
3. environment-friendly modified pitch according to claim 1, it is characterised in that：Include the group of following parts by weight
Point, 100 parts of pitch, 6 parts of forsterite powder, 3 parts of yttrium aluminium garnet fibers, 3.5 parts of styrene-acrylic resin, 1.4 parts of dibenzalacetone,
0.8 part of hydroquinones, 5 parts of polyisobutene succinimide.
4. environment-friendly modified pitch according to claim 1, it is characterised in that：The particle diameter of the forsterite powder is
5μm ~ 100μm。
5. environment-friendly modified pitch according to claim 1, it is characterised in that：The particle diameter of the forsterite powder is
20μm。
6. environment-friendly modified pitch according to claim 1, it is characterised in that：The pitch is matrix pitch, SBS
One kind in modified pitch or rubber modified asphalt.
7. the method that one kind prepares the environment-friendly modified pitch as described in any one of claim 1 ~ 6, it is characterised in that：Bag
Include following steps,
（1）Forsterite powder, yttrium aluminium garnet fibers are added in the ethanol solution that mass concentration is 25% ~ 35%, stirring 5 ~
Styrene-acrylic resin, dibenzalacetone and hydroquinones are added after 15min, and with high-speed shearing machine in 300r/min ~ 400r/
10 ~ 20min is stirred under min shear rates, polyisobutene succinimide is then added, reuses high-speed shearing machine and exist
1h ~ 3h is stirred under 400r/min ~ 500r/min shear rates；
（2）By step（1）The mixture is heated to 15 ~ 35 DEG C, and keeps 1 ~ 2h so that ethanol is evaporated off, and gained mixture is positioned over
Dried in baking oven, keep 100 DEG C ~ 110 DEG C constant temperature, 4h ~ 6h；
（3）Pitch is heated to 130 DEG C ~ 150 DEG C, molten condition is maintained at, and adds and passes through step（2）The mixture of processing
In, obtain asphalt mixture；
（4）Using high-speed shearing machine by step（3）In obtained asphalt mixture 1000r/min ~ 2000r/min shearing
Low velocity shear 20min ~ 40min under speed, the then high speed shear under 3500r/min ~ 4500r/min shear rate
15min ~ 30min。
8. application of the environment-friendly modified pitch in road engineering material as described in any one of claim 1 ~ 6.
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Address after: 300051 No. 239, Yingkou Road, Heping District, Tianjin Patentee after: Tianjin municipal engineering design and Research Institute Co.,Ltd. Address before: 300051 No. 239, Yingkou Road, Heping District, Tianjin Patentee before: TIANJIN MUNICIPAL ENGINEERING DESIGN & Research Institute |