CN106832973B - Sodium lignin sulfonate is grafted magnesium-aluminum-based laminar double hydroxide modifying agent, ultraviolet aging resistance SBR modified pitch and preparation method thereof - Google Patents
Sodium lignin sulfonate is grafted magnesium-aluminum-based laminar double hydroxide modifying agent, ultraviolet aging resistance SBR modified pitch and preparation method thereof Download PDFInfo
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- CN106832973B CN106832973B CN201710096616.7A CN201710096616A CN106832973B CN 106832973 B CN106832973 B CN 106832973B CN 201710096616 A CN201710096616 A CN 201710096616A CN 106832973 B CN106832973 B CN 106832973B
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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
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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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
Abstract
The present invention relates to a kind of modifying agent, SBR modified pitch and preparation method thereof.Sodium lignin sulfonate is grafted magnesium-aluminum-based laminar double hydroxide modifying agent, it is characterized in that being prepared by lignin and magnesium-aluminum-based laminar double hydroxide grafting.A kind of ultraviolet aging resistance SBR modified pitch, it is characterized in that being made of SBR modified pitch, sodium lignin sulfonate grafting magnesium-aluminum-based laminar double hydroxide modifying agent, mass percent shared by each raw material are as follows: SBR modified pitch 90% ~ 99%, sodium lignin sulfonate are grafted magnesium-aluminum-based laminar double hydroxide modifying agent 1 ~ 10%.Sodium lignin sulfonate grafting magnesium-aluminum-based laminar double hydroxide is added in SBR modified pitch by the present invention, the ultraviolet aging resistance ability of SBR modified pitch can be significantly improved, realize steady in a long-term dispersion of the magnesium-aluminum-based laminar double hydroxide in SBR modified pitch, the SBR modified pitch of preparation has excellent ultraviolet resistance aging ability.
Description
Technical field
The present invention relates to a kind of modifying agent, SBR modified pitch and preparation method thereof, and in particular to a kind of sodium lignin sulfonate
It is grafted magnesium-aluminum-based laminar double hydroxide modifying agent, ultraviolet aging resistance SBR modified pitch and preparation method thereof.
Background technique
Butadiene-styrene rubber (SBR) Modified Bitumen Pavement has excellent low-temperature cracking-resistance, regional in Xinjiang of China, Tibet etc.
To extensive use.But SBR modified pitch its be laid with and use process in, be easy by heat, oxygen and ultraviolet light etc. it is extraneous because
Element acts on and aging occurs, and road surface is caused the diseases such as cracking, track and pit slot occur.Especially ultraviolet light wave length, energy are high, right
The destruction of bituminous pavement is the most serious, the SBR degradation with aging that but will cause, and the low temperature for significantly reducing modified pitch extends
Property, so as to cause Pavement of Asphalt Road Performance deterioration, reduced service life.
For the anti-ultraviolet aging for improving SBR modified pitch, 102181162 A of patent CN discloses a kind of magnalium
The ageing-resistant SBR modified pitch of base layered double-hydroxide, magnesium-aluminum-based laminar double hydroxide used have ultraviolet light excellent
Shielding action, can be improved the anti-ultraviolet ageing ability of SBR modified pitch, but since magnesium-aluminum-based laminar double hydroxide is nothing
Machine powder, poor with SBR modified pitch compatibility, magnesium-aluminum-based laminar double hydroxide easily settles in SBR modified pitch,
Magnesium-aluminum-based laminar double hydroxide has thus been seriously affected to act on the ultraviolet protection of SBR modified pitch.In addition, in Xinjiang, west
It still needs further improvement for the ultraviolet aging resistance ability of the plateaus intensive ultraviolet area SBR modified pitch such as hiding.
Summary of the invention
The main purpose of the present invention is to provide a kind of sodium lignin sulfonate grafting magnesium-aluminum-based laminar double hydroxide is modified
Agent and preparation method thereof, the modifying agent is good with SBR modified pitch compatibility and can be stably dispersed in pitch.
Another object of the present invention is to provide a kind of ultraviolet aging resistance SBR modified pitch and preparation method thereof, the resistance to purples
Outer aging SBR modified pitch has good physical and anti-ultraviolet ageing performance.
To achieve the goals above, the technical scheme is that the double hydrogen-oxygens of sodium lignin sulfonate grafting magnesium-aluminum-based stratiform
Compound modifying agent, it is characterized in that being prepared by lignin and magnesium-aluminum-based laminar double hydroxide grafting.The magnesium-aluminum-based
Layered double-hydroxide is according to preparation method disclosed in 102181162 A (application number CN201110068806.0) of patent CN
It is prepared.
The preparation method of above-mentioned sodium lignin sulfonate grafting magnesium-aluminum-based laminar double hydroxide modifying agent, it is characterized in that including
Following steps: antifebrin, toluene di-isocyanate(TDI) and dry toluene 13:10:77 in mass ratio are first configured to solution, 70
It is stirred to react at DEG C 1 hour, obtains toluene di-isocyanate(TDI)-antifebrin solution；It is cooling after being dried 2 hours at 120 DEG C again
Magnesium-aluminum-based laminar double hydroxide and dry toluene to room temperature are that 40:60 is configured to the double hydroxides of magnesium-aluminum-based stratiform in mass ratio
Then object-toluene mixed solution is mixed with toluene di-isocyanate(TDI)-antifebrin solution ratio of 90:10 in mass ratio,
It is stirred to react at 70 DEG C 2 hours, obtains solution；It is molten that 10 parts of sodium lignin sulfonates are finally added to 90 parts of gained by mass fraction
In liquid, it is stirred to react at 100 DEG C 2 hours；Reaction product is depressurized filtering and washing 3 times after the completion of reaction, is subsequently placed in temperature
For degree to be dry in 100 DEG C of baking oven, taking-up drying solid crushes in high speed disintegrator is grafted magnesium to get to sodium lignin sulfonate
Aluminum-based layered double-hydroxide modifying agent (or sodium lignin sulfonate is grafted magnesium-aluminum-based laminar double hydroxide；The sulfomethylated lignin
Sour sodium grafting magnesium-aluminum-based laminar double hydroxide modifying agent is good with SBR modified pitch compatibility and can be stably dispersed in pitch
In).
A kind of ultraviolet aging resistance SBR modified pitch, it is characterized in that being grafted magnalium by SBR modified pitch, sodium lignin sulfonate
Base layered double-hydroxide modifying agent composition, mass percent shared by each raw material are as follows: SBR modified pitch 90%~99%, wooden
Plain sodium sulfonate is grafted magnesium-aluminum-based laminar double hydroxide modifying agent 1~10%.
The SBR modified pitch, 25 DEG C of needle penetrations are 60~120dmm, and softening point is greater than 50 DEG C, and 5 DEG C of ductilities are greater than
40cm。
The preparation method of above-mentioned a kind of ultraviolet aging resistance SBR modified pitch, it is characterized in that including the following steps:
(1) by mass percent shared by each raw material are as follows: SBR modified pitch 90%~99%, sodium lignin sulfonate are grafted magnesium
It is double to choose SBR modified pitch, sodium lignin sulfonate grafting magnesium-aluminum-based stratiform for aluminum-based layered double-hydroxide modifying agent 1~10%
Hydroxide modifier；
(2) SBR modified pitch is heated to 160 DEG C, addition sodium lignin sulfonate is grafted magnesium-aluminum-based laminar double hydroxide
Modifying agent starts high-speed shearing machine, high-speed stirred 1 hour under the revolving speed of 4000rpm, keep temperature be 160 DEG C ± 5 DEG C (i.e.
155 DEG C~165 DEG C), obtain ultraviolet aging resistance SBR modified pitch.
Beneficial effects of the present invention are as follows:
First, sodium lignin sulfonate and magnesium-aluminum-based laminar double hydroxide are grafted using toluene di-isocyanate(TDI).
It reacts antifebrin and the isocyano of one end in toluene di-isocyanate(TDI) at a temperature of 70 DEG C, obtains toluene closed at one end
Then magnesium-aluminum-based laminar double hydroxide, the isocyano and magnesium that toluene di-isocyanate(TDI) is not blocked is added in diisocyanate
The hydroxyl on aluminum-based layered double-hydroxide surface reacts, and forms chemical bonding.After temperature is increased to 100 DEG C, acetophenone
Amine end-capping reagent reaches deblocking temperature, and the closed one end deblocking of toluene di-isocyanate(TDI) has reactivity again, adds at this time
Sodium lignin sulfonate, toluene di-isocyanate(TDI) unseals the isocyano of side and the hydroxyl on sodium lignin sulfonate surface occurs instead
It answers, forms chemical bonding, finally obtain sodium lignin sulfonate grafting magnesium-aluminum-based laminar double hydroxide.Sodium lignin sulfonate grafting
Magnesium-aluminum-based laminar double hydroxide possesses more hydrophobic structure (phenyl ring, carbochain etc.), less hydrophilic radical (hydroxyl etc.), with
Pitch has preferable compatibility.Therefore, sodium lignin sulfonate grafting magnesium-aluminum-based laminar double hydroxide can have in pitch matrix
There is better dispersibility, solves the problems, such as that inorganic magnesium-aluminum-based laminar double hydroxide is easy to happen isolation in pitch.
Second, the magnesium-aluminum-based laminar double hydroxide in sodium lignin sulfonate grafting magnesium-aluminum-based laminar double hydroxide has
Excellent ultraviolet reflectance ability, while the aromatic ring that sodium lignin sulfonate contains has ultraviolet absorption ability, therefore lignin sulfonic acid
Sodium grafting magnesium-aluminum-based laminar double hydroxide modifying agent can provide ultraviolet reflectance and absorb dual ultraviolet aging resistance effect, thus
It is more significant to the improvement of pitch resistance to UV aging.
Third, sodium lignin sulfonate is a kind of natural polymers.Sodium lignin sulfonate derives from sulfite cellulose
Waste liquid, it is abundance, cheap, it is commonly used for water-reducing agent or dispersing agent etc..By magnesium-aluminum-based laminar double hydroxide and lignin
Sodium sulfonate not only improves the compatibility of magnesium-aluminum-based laminar double hydroxide and pitch by chemical bonds, and expands wood
The application field of quality sodium sulfonate.
Fourth, sodium lignin sulfonate grafting magnesium-aluminum-based laminar double hydroxide is added in SBR modified pitch by the present invention,
The ultraviolet aging resistance ability of SBR modified pitch can be significantly improved, realizes magnesium-aluminum-based laminar double hydroxide in SBR modified pitch
In dispersion steady in a long-term, the SBR modified pitch of preparation has excellent ultraviolet resistance aging ability.
Specific embodiment
For a better understanding of the present invention, below with reference to the embodiment content that the present invention is furture elucidated, but it is of the invention
Content is not limited solely to the following examples.
The preparation of the grafting magnesium-aluminum-based laminar double hydroxide modifying agent of sodium lignin sulfonate employed in following embodiment
Method are as follows: antifebrin, toluene di-isocyanate(TDI) and dry toluene 13:10:77 in mass ratio are first configured to solution, at 70 DEG C
Under be stirred to react 1 hour, obtain toluene di-isocyanate(TDI)-antifebrin solution；It is cooled to after being dried 2 hours at 120 DEG C again
The magnesium-aluminum-based laminar double hydroxide and dry toluene of room temperature are that 40:60 is configured to the double hydroxides of magnesium-aluminum-based stratiform in mass ratio
Then object-toluene mixed solution is mixed with toluene di-isocyanate(TDI)-antifebrin solution ratio of 90:10 in mass ratio,
It is stirred to react at 70 DEG C 2 hours, obtains solution；It is molten that 10 parts of sodium lignin sulfonates are finally added to 90 parts of gained by mass fraction
In liquid, it is stirred to react at 100 DEG C 2 hours；Reaction product is depressurized filtering and washing 3 times after the completion of reaction, is subsequently placed in temperature
For degree to be dry in 100 DEG C of baking oven, taking-up drying solid crushes in high speed disintegrator is grafted magnesium to get to sodium lignin sulfonate
Aluminum-based layered double-hydroxide modifying agent.
The magnesium-aluminum-based laminar double hydroxide is prepared according to preparation method disclosed in 102174269 A of patent CN
It obtains.
Embodiment 1:
By 95 parts of (mass parts, similarly hereinafter) SBR modified pitch (25 DEG C of needle penetrations are 63dmm, and softening point is 59.3 DEG C) heating
To 160 DEG C, adds above-mentioned sodium lignin sulfonate and is grafted 5 parts of magnesium-aluminum-based laminar double hydroxide modifying agent, start high-speed shearing machine,
High-speed stirred 1 hour under the revolving speed of 4000rpm, keeping temperature is 160 DEG C ± 5 DEG C, obtains the modified drip of ultraviolet aging resistance SBR
It is green.
Ultraviolet accelerated ageing testing is carried out to ultraviolet aging resistance SBR modified pitch and original SBR modified pitch (comparative sample)
(ultraviolet ray intensity is 1200 μ W/cm2, temperature is 60 DEG C, and ageing time is 9 days, similarly hereinafter), then, its needle penetration is tested respectively
(the soft or hard degree of reflection pitch and consistency, the ability for resisting failure by shear), softening point (reflecting asphalt high-temperature deformation resistance) and 5 DEG C
Ductility (reflection pitch low-temperature cracking-resistance), test result is listed in table 1.
Performance change before and after 1 ultraviolet aging resistance SBR modified pitch of table and comparative sample ultraviolet ageing
Two compare, after ultraviolet ageing, ultraviolet aging resistance SBR modified pitch needle penetration decreasing value, softening point increment value and 5
DEG C ductility decreasing value is respectively less than comparative sample, thus ultraviolet aging resistance SBR modified pitch has resistance to purple more more excellent than comparative sample
Outer ageing properties.
Embodiment 2:
By mass parts, 97 parts of SBR modified pitch (25 DEG C of needle penetrations are 86dmm, and softening point is 56.8 DEG C) are heated to 160
DEG C, it adds above-mentioned sodium lignin sulfonate and is grafted 3 parts of magnesium-aluminum-based laminar double hydroxide modifying agent, start high-speed shearing machine,
High-speed stirred 1 hour under the revolving speed of 4000rpm, keeping temperature is 160 DEG C ± 5 DEG C, obtains the modified drip of ultraviolet aging resistance SBR
It is green.
Ultraviolet accelerated ageing testing is carried out to ultraviolet aging resistance SBR modified pitch and original SBR modified pitch (comparative sample),
Then, its needle penetration, softening point and 5 DEG C of ductilities, test result are tested respectively is listed in table 2.
Performance change before and after 2 ultraviolet aging resistance SBR modified pitch of table and comparative sample ultraviolet ageing
By comparing it is found that ultraviolet aging resistance SBR modified pitch needle penetration decreasing value, softening point increase after ultraviolet ageing
Value and 5 DEG C of ductility decreasing value are respectively less than comparative sample.Similar to Example 1, sodium lignin sulfonate is grafted the double hydrogen-oxygens of magnesium-aluminum-based stratiform
Compound modifying agent significantly improves the anti-ultraviolet ageing performance of SBR modified pitch.
Embodiment 3:
By mass parts, 96 parts of SBR modified pitch (25 DEG C of needle penetrations are 103dmm, and softening point is 54.2 DEG C) are heated to
It 160 DEG C, adds above-mentioned sodium lignin sulfonate and is grafted 4 parts of magnesium-aluminum-based laminar double hydroxide modifying agent, start high-speed shearing machine,
High-speed stirred 1 hour under the revolving speed of 4000rpm, keeping temperature is 160 DEG C ± 5 DEG C, obtains the modified drip of ultraviolet aging resistance SBR
It is green.
Ultraviolet accelerated ageing testing is carried out to ultraviolet aging resistance SBR modified pitch and original SBR modified pitch (comparative sample),
Then, its needle penetration, softening point and 5 DEG C of ductilities, test result are tested respectively is listed in table 3.
Performance change before and after 3 ultraviolet aging resistance SBR modified pitch of table and comparative sample ultraviolet ageing
By comparing it is found that ultraviolet aging resistance SBR modified pitch needle penetration decreasing value, softening point increase after ultraviolet ageing
Value and 5 DEG C of ductility decreasing value are respectively less than comparative sample.Similar to Example 1, sodium lignin sulfonate is grafted the double hydrogen-oxygens of magnesium-aluminum-based stratiform
Compound modifying agent significantly improves the anti-ultraviolet ageing performance of SBR modified pitch.
Embodiment 4:
By mass parts, 94 parts of SBR modified pitch (25 DEG C of needle penetrations are 86dmm, and softening point is 56.8 DEG C) are heated to 160
DEG C, it adds above-mentioned sodium lignin sulfonate and is grafted 6 parts of magnesium-aluminum-based laminar double hydroxide modifying agent, start high-speed shearing machine,
High-speed stirred 1 hour under the revolving speed of 4000rpm, keeping temperature is 160 DEG C ± 5 DEG C, obtains the modified drip of ultraviolet aging resistance SBR
It is green.
Ultraviolet accelerated ageing testing is carried out to ultraviolet aging resistance SBR modified pitch and original SBR modified pitch (comparative sample),
Then, its needle penetration, softening point and 5 DEG C of ductilities, test result are tested respectively is listed in table 4.
Performance change before and after 4 ultraviolet aging resistance SBR modified pitch of table and comparative sample ultraviolet ageing
By comparing it is found that ultraviolet aging resistance SBR modified pitch needle penetration decreasing value, softening point increase after ultraviolet ageing
Value and 5 DEG C of ductility decreasing value are respectively less than comparative sample.Similar to Example 1, sodium lignin sulfonate is grafted the double hydrogen-oxygens of magnesium-aluminum-based stratiform
Compound modifying agent significantly improves the anti-ultraviolet ageing performance of SBR modified pitch.
Embodiment 5:
By mass parts, 93 parts of SBR modified pitch (25 DEG C of needle penetrations are 63dmm, and softening point is 59.3 DEG C) are heated to 160
DEG C, it adds above-mentioned sodium lignin sulfonate and is grafted 7 parts of magnesium-aluminum-based laminar double hydroxide modifying agent, start high-speed shearing machine,
High-speed stirred 1 hour under the revolving speed of 4000rpm, keeping temperature is 160 DEG C ± 5 DEG C, obtains the modified drip of ultraviolet aging resistance SBR
It is green.
Ultraviolet accelerated ageing testing is carried out to ultraviolet aging resistance SBR modified pitch and original SBR modified pitch (comparative sample),
Then, its needle penetration, softening point and 5 DEG C of ductilities, test result are tested respectively is listed in table 5.
Performance change before and after 5 ultraviolet aging resistance SBR modified pitch of table and comparative sample ultraviolet ageing
By comparing it is found that ultraviolet aging resistance SBR modified pitch needle penetration decreasing value, softening point increase after ultraviolet ageing
Value and 5 DEG C of ductility decreasing value are respectively less than comparative sample.Similar to Example 1, sodium lignin sulfonate is grafted the double hydrogen-oxygens of magnesium-aluminum-based stratiform
Compound modifying agent significantly improves the anti-ultraviolet ageing performance of SBR modified pitch.
Embodiment 6:
A kind of preparation method of ultraviolet aging resistance SBR modified pitch carries out as follows:
By mass parts, 90 parts of SBR modified pitch are heated to 160 DEG C, add above-mentioned sodium lignin sulfonate grafting magnesium-aluminum-based
10 parts of layered double-hydroxide modifying agent, high-speed shearing machine is started, high-speed stirred 1 hour under the revolving speed of 4000rpm keeps temperature
Degree is 160 DEG C ± 5 DEG C, obtains ultraviolet aging resistance SBR modified pitch.
The SBR modified pitch, 25 DEG C of needle penetrations are 60~120dmm, and softening point is greater than 50 DEG C, and 5 DEG C of ductilities are greater than
40cm。
Similar to Example 1, sodium lignin sulfonate grafting magnesium-aluminum-based laminar double hydroxide modifying agent significantly improves SBR
The anti-ultraviolet ageing performance of modified pitch.
Embodiment 7:
A kind of preparation method of ultraviolet aging resistance SBR modified pitch carries out as follows:
By mass parts, 99 parts of SBR modified pitch are heated to 160 DEG C, add above-mentioned sodium lignin sulfonate grafting magnesium-aluminum-based
1 part of layered double-hydroxide modifying agent, high-speed shearing machine is started, high-speed stirred 1 hour under the revolving speed of 4000rpm keeps temperature
Degree is 160 DEG C ± 5 DEG C, obtains ultraviolet aging resistance SBR modified pitch.
The SBR modified pitch, 25 DEG C of needle penetrations are 60~120dmm, and softening point is greater than 50 DEG C, and 5 DEG C of ductilities are greater than
40cm。
Similar to Example 1, sodium lignin sulfonate grafting magnesium-aluminum-based laminar double hydroxide modifying agent significantly improves SBR
The anti-ultraviolet ageing performance of modified pitch.
Claims (4)
1. sodium lignin sulfonate is grafted magnesium-aluminum-based laminar double hydroxide modifying agent, it is characterized in that passing through lignin and magnalium base
The grafting of shape double-hydroxide is prepared；
Include the following steps: first to be configured to antifebrin, toluene di-isocyanate(TDI) and dry toluene 13:10:77 in mass ratio
Solution is stirred to react 1 hour at 70 DEG C, obtains toluene di-isocyanate(TDI)-antifebrin solution；It again will be small in 120 DEG C of dryings 2
When after the magnesium-aluminum-based laminar double hydroxide that is cooled to room temperature and dry toluene be in mass ratio that 40:60 is configured to magnesium-aluminum-based stratiform
Double-hydroxide-toluene mixed solution, then with toluene di-isocyanate(TDI)-antifebrin solution ratio of 90:10 in mass ratio
It mixes, is stirred to react at 70 DEG C 2 hours, obtains solution；Finally 10 parts of sodium lignin sulfonates are added to by mass fraction
In 90 parts of acquired solutions, it is stirred to react at 100 DEG C 2 hours；Reaction product is depressurized filtering and washing 3 times after the completion of reaction,
It is subsequently placed in drying in the baking oven that temperature is 100 DEG C, drying solid is taken out and is crushed in high speed disintegrator to get sulfomethylated lignin is arrived
Sour sodium is grafted magnesium-aluminum-based laminar double hydroxide modifying agent.
2. a kind of ultraviolet aging resistance SBR modified pitch, it is characterized in that being grafted magnesium-aluminum-based by SBR modified pitch, sodium lignin sulfonate
Layered double-hydroxide modifying agent forms, mass percent shared by each raw material are as follows: SBR modified pitch 90%~99%, lignin
Sodium sulfonate is grafted magnesium-aluminum-based laminar double hydroxide modifying agent 1~10%；
Sodium lignin sulfonate grafting magnesium-aluminum-based laminar double hydroxide modifying agent the preparation method comprises the following steps: first by antifebrin,
Toluene di-isocyanate(TDI) and dry toluene 13:10:77 in mass ratio are configured to solution, are stirred to react 1 hour, obtain at 70 DEG C
Toluene di-isocyanate(TDI)-antifebrin solution；The double hydrogen of magnesium-aluminum-based stratiform being cooled to room temperature after again will be 2 hours dry at 120 DEG C
Oxide and dry toluene are that 40:60 is configured to magnesium-aluminum-based laminar double hydroxide-toluene mixed solution in mass ratio, then with
Toluene di-isocyanate(TDI)-antifebrin solution ratio of 90:10 in mass ratio mixes, and is stirred to react 2 hours, obtains at 70 DEG C
To solution；Finally 10 parts of sodium lignin sulfonates are added in 90 parts of acquired solutions by mass fraction, are stirred to react at 100 DEG C
2 hours；Reaction product is depressurized filtering and washing 3 times after the completion of reaction, is subsequently placed in drying in the baking oven that temperature is 100 DEG C,
Drying solid is taken out to be crushed in high speed disintegrator to get modified to sodium lignin sulfonate grafting magnesium-aluminum-based laminar double hydroxide
Agent.
3. a kind of ultraviolet aging resistance SBR modified pitch according to claim 2, it is characterised in that: the modified drip of the SBR
Blueness, 25 DEG C of needle penetrations are 60~120dmm, and softening point is greater than 50 DEG C, and 5 DEG C of ductilities are greater than 40cm.
4. a kind of preparation method of ultraviolet aging resistance SBR modified pitch as claimed in claim 2, it is characterized in that including following step
It is rapid:
(1) by mass percent shared by each raw material are as follows: SBR modified pitch 90%~99%, sodium lignin sulfonate are grafted magnesium-aluminum-based
Layered double-hydroxide modifying agent 1~10% chooses SBR modified pitch, the double hydrogen-oxygens of sodium lignin sulfonate grafting magnesium-aluminum-based stratiform
Compound modifying agent；
(2) SBR modified pitch is heated to 160 DEG C, addition sodium lignin sulfonate grafting magnesium-aluminum-based laminar double hydroxide is modified
High-speed shearing machine is started in agent, high-speed stirred 1 hour under the revolving speed of 4000rpm, and keeping temperature is 160 DEG C ± 5 DEG C, obtains
Ultraviolet aging resistance SBR modified pitch.
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| CN201710096616.7A CN106832973B (en) | 2017-02-22 | 2017-02-22 | Sodium lignin sulfonate is grafted magnesium-aluminum-based laminar double hydroxide modifying agent, ultraviolet aging resistance SBR modified pitch and preparation method thereof |
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| CN107501691A (en) * | 2017-09-25 | 2017-12-22 | 安徽依采妮纤维材料科技有限公司 | A kind of preparation method of sodium lignin sulfonate filled plastics composite |
| CN107446218A (en) * | 2017-09-25 | 2017-12-08 | 安徽依采妮纤维材料科技有限公司 | A kind of preparation method of maleylation sodium lignin sulfonate filled plastics composite |
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| CN102181162B (en) * | 2011-03-21 | 2012-11-07 | 武汉理工大学 | Aging resistance SBR (Styrenebutadiene rubber) modified road asphalt of magnalium base layer double hydroxide and preparation method of asphalt |
| CN102718986B (en) * | 2012-05-09 | 2014-01-15 | 深圳市博富隆新材料科技有限公司 | Lignin modified layered double hydroxide and preparation method thereof and rubber composite |
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