CN106832973A - Sodium lignin sulfonate grafting magnesium-aluminum-based laminar double hydroxide modifying agent, ultraviolet aging resistance SBR modified pitch and preparation method thereof - Google Patents
Sodium lignin sulfonate grafting magnesium-aluminum-based laminar double hydroxide modifying agent, ultraviolet aging resistance SBR modified pitch and preparation method thereof Download PDFInfo
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
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- C—CHEMISTRY; METALLURGY
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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 be grafted with magnesium-aluminum-based laminar double hydroxide by lignin preparing.A kind of ultraviolet aging resistance SBR modified pitch, it is characterized in that being made up of SBR modified pitch, sodium lignin sulfonate grafting magnesium-aluminum-based laminar double hydroxide modifying agent, mass percent shared by each raw material is：SBR modified pitch 90% ~ 99%, sodium lignin sulfonate grafting magnesium-aluminum-based laminar double hydroxide modifying agent 1 ~ 10%.Be added to sodium lignin sulfonate grafting magnesium-aluminum-based laminar double hydroxide in SBR modified pitch by the present invention, the ultraviolet aging resistance ability of SBR modified pitch can be significantly improved, steady in a long-term dispersion of the magnesium-aluminum-based laminar double hydroxide in SBR modified pitch is realized, the SBR modified pitch of preparation has the aging ability of excellent ultraviolet resistance.
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
Grafting magnesium-aluminum-based laminar double hydroxide modifying agent, ultraviolet aging resistance SBR modified pitch and preparation method thereof.
Background technology
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 be subject to heat, oxygen and ultraviolet light etc. extraneous during its laying and use, easily because
Element effect and occur aging, cause road surface the diseases such as cracking, rut and pit occur.Especially ultraviolet light wave length, energy are high, right
The destruction of bituminous paving is the most serious, the SBR degradation with agings that can more trigger, and the low temperature for significantly reducing modified pitch extends
Property, so as to cause Pavement of Asphalt Road Performance to deteriorate, service life shortens.
To improve the anti-ultraviolet aging of SBR modified pitch, the A of patent CN 102181162 disclose a kind of magnalium
The ageing-resistant SBR modified pitch of base layered double-hydroxide, magnesium-aluminum-based laminar double hydroxide used has excellent to ultraviolet
Shielding action, it is possible to increase the anti-ultraviolet ageing ability of SBR modified pitch, but because magnesium-aluminum-based laminar double hydroxide is nothing
Machine powder, poor with SBR modified pitch compatibilities, magnesium-aluminum-based laminar double hydroxide is easily settled in SBR modified pitch,
Ultraviolet protection effect of the magnesium-aluminum-based laminar double hydroxide to SBR modified pitch is thus had a strong impact on.Additionally, in Xinjiang, west
The ultraviolet aging resistance ability of the plateau intensive ultraviolet area SBR modified pitch such as Tibetan need further raising.
The content of the invention
It is modified it is a primary object of the present invention to provide a kind of sodium lignin sulfonate grafting magnesium-aluminum-based laminar double hydroxide
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 purple
Outer aging SBR modified pitch has good physical and anti-ultraviolet ageing performance.
To achieve these goals, 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 be grafted with magnesium-aluminum-based laminar double hydroxide by lignin preparing.Described magnesium-aluminum-based
Layered double-hydroxide is according to preparation method disclosed in the A (application number CN201110068806.0) of patent CN 102181162
Prepare.
Above-mentioned sodium lignin sulfonate is grafted the preparation method of magnesium-aluminum-based laminar double hydroxide modifying agent, it is characterized in that including
Following steps：First by antifebrin, toluene di-isocyanate(TDI) and dry toluene in mass ratio 13:10:77 are configured to solution, 70
Stirring reaction 1 hour at DEG C, obtains toluene di-isocyanate(TDI)-antifebrin solution；To be cooled down after 2 hours in 120 DEG C of dryings again
Magnesium-aluminum-based laminar double hydroxide to room temperature is 40 with dry toluene in mass ratio:60 are configured to the double hydroxides of magnesium-aluminum-based stratiform
Thing-toluene mixed solution, then with toluene di-isocyanate(TDI)-antifebrin solution in mass ratio 90:10 ratio is mixed,
Stirring reaction 2 hours, obtain solution at 70 DEG C；10 parts of sodium lignin sulfonates are finally added to 90 parts of gained by mass fraction molten
In liquid, stirring reaction 2 hours at 100 DEG C；After the completion of reaction by product decompression filtering and washing 3 times, temperature is subsequently placed in
Spend in the baking oven for 100 DEG C and dry, take out drying solid and crushed in high speed disintegrator, that is, obtain sodium lignin sulfonate grafting magnesium
Aluminum-based layered double-hydroxide modifying agent (or sodium lignin sulfonate grafting 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 by SBR modified pitch, sodium lignin sulfonate grafting magnalium
Base layered double-hydroxide modifying agent is constituted, and mass percent shared by each raw material is：It is SBR modified pitch 90%~99%, wooden
Plain sodium sulfonate grafting magnesium-aluminum-based laminar double hydroxide modifying agent 1~10%.
Described SBR modified pitch, its 25 DEG C of needle penetrations are 60~120dmm, and softening point is more than 50 DEG C, and 5 DEG C of ductilities are more than
40cm。
The preparation method of above-mentioned a kind of ultraviolet aging resistance SBR modified pitch, it is characterized in that comprising the following steps：
(1) mass percent as shared by each raw material is：SBR modified pitch 90%~99%, sodium lignin sulfonate is grafted magnesium
Aluminum-based layered double-hydroxide modifying agent 1~10%, chooses SBR modified pitch, sodium lignin sulfonate grafting magnesium-aluminum-based stratiform double
Hydroxide modifier；
(2) SBR modified pitch is heated to 160 DEG C, addition sodium lignin sulfonate grafting magnesium-aluminum-based laminar double hydroxide
Modifying agent, starts high-speed shearing machine, high-speed stirred 1 hour under the rotating speed of 4000rpm, keeping temperature be 160 DEG C ± 5 DEG C (i.e.
155 DEG C~165 DEG C), that is, ultraviolet aging resistance SBR modified pitch is obtained.
Beneficial effects of the present invention are as follows：
First, sodium lignin sulfonate is grafted with magnesium-aluminum-based laminar double hydroxide using toluene di-isocyanate(TDI).
Antifebrin is reacted with the isocyano of one end in toluene di-isocyanate(TDI) at a temperature of 70 DEG C, obtain the toluene of one end closing
Diisocyanate, is subsequently adding magnesium-aluminum-based laminar double hydroxide, isocyano and magnesium that toluene di-isocyanate(TDI) is not blocked
The hydroxyl on aluminum-based layered double-hydroxide surface reacts, and forms chemical bond.After temperature is increased to 100 DEG C, acetophenone
Amine end-capping reagent reaches deblocking temperature, and one end deblocking of toluene di-isocyanate(TDI) closing possesses reactivity, now adds again
Sodium lignin sulfonate, isocyano and the hydroxyl on sodium lignin sulfonate surface of toluene di-isocyanate(TDI) deblocking side occur instead
Should, chemical bond is formed, finally give sodium lignin sulfonate grafting magnesium-aluminum-based laminar double hydroxide.Sodium lignin sulfonate is grafted
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 more preferable dispersiveness, solve the problem that inorganic magnesium-aluminum-based laminar double hydroxide is susceptible to 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, so that
Improvement to pitch resistance to UV aging is more notable.
Third, sodium lignin sulfonate is a kind of natural polymerses.Sodium lignin sulfonate derives from sulfite cellulose
Waste liquid, it is abundance, cheap, it is commonly used for water reducer or dispersant 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, and expand wood by chemical bonds
The application field of quality sodium sulfonate.
Fourth, be added to sodium lignin sulfonate grafting magnesium-aluminum-based laminar double hydroxide 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 the aging ability of excellent ultraviolet resistance.
Specific embodiment
For a better understanding of the present invention, it is with reference to the embodiment content that the present invention is furture elucidated but of the invention
Content is not limited solely to the following examples.
Sodium lignin sulfonate employed in following examples is grafted the preparation of magnesium-aluminum-based laminar double hydroxide modifying agent
Method is：First by antifebrin, toluene di-isocyanate(TDI) and dry toluene in mass ratio 13:10:77 are configured to solution, at 70 DEG C
Lower stirring reaction 1 hour, obtains toluene di-isocyanate(TDI)-antifebrin solution；To be cooled to after 2 hours in 120 DEG C of dryings again
The magnesium-aluminum-based laminar double hydroxide of room temperature is 40 with dry toluene in mass ratio:60 are configured to the double hydroxides of magnesium-aluminum-based stratiform
Thing-toluene mixed solution, then with toluene di-isocyanate(TDI)-antifebrin solution in mass ratio 90:10 ratio is mixed,
Stirring reaction 2 hours, obtain solution at 70 DEG C；10 parts of sodium lignin sulfonates are finally added to 90 parts of gained by mass fraction molten
In liquid, stirring reaction 2 hours at 100 DEG C；After the completion of reaction by product decompression filtering and washing 3 times, temperature is subsequently placed in
Spend in the baking oven for 100 DEG C and dry, take out drying solid and crushed in high speed disintegrator, that is, obtain sodium lignin sulfonate grafting magnesium
Aluminum-based layered double-hydroxide modifying agent.
Described magnesium-aluminum-based laminar double hydroxide is prepared according to preparation method disclosed in the A of patent CN 102174269
Obtain.
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, above-mentioned 5 parts of sodium lignin sulfonate grafting magnesium-aluminum-based laminar double hydroxide modifying agent is added, starts high-speed shearing machine,
High-speed stirred 1 hour under the rotating speed of 4000rpm, keeping temperature is 160 DEG C ± 5 DEG C, that is, the modified drips of ultraviolet aging resistance SBR are obtained
It is blue or green.
Ultraviolet accelerated ageing testing is carried out to ultraviolet aging resistance SBR modified pitch and original SBR modified pitch (control 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 reflection soft or hard degree of pitch and denseness, the ability of resistance failure by shear), softening point (reflection 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 the ultraviolet aging resistance SBR modified pitch of table 1 and control sample ultraviolet ageing
Two compare, after ultraviolet ageing, ultraviolet aging resistance SBR modified pitch needle penetrations decreasing value, softening point increment value and 5
DEG C ductility decreasing value is respectively less than control sample, thus ultraviolet aging resistance SBR modified pitch has the resistance to purple more more excellent than control 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, above-mentioned 3 parts of sodium lignin sulfonate grafting magnesium-aluminum-based laminar double hydroxide modifying agent is added, high-speed shearing machine is started,
High-speed stirred 1 hour under the rotating speed of 4000rpm, keeping temperature is 160 DEG C ± 5 DEG C, that is, the modified drips of ultraviolet aging resistance SBR are obtained
It is blue or green.
Ultraviolet accelerated ageing testing is carried out to ultraviolet aging resistance SBR modified pitch and original SBR modified pitch (control sample),
Then, its needle penetration, softening point and 5 DEG C of ductilities are tested respectively, and test result is listed in table 2.
Performance change before and after the ultraviolet aging resistance SBR modified pitch of table 2 and control sample ultraviolet ageing
By comparing, after ultraviolet ageing, ultraviolet aging resistance SBR modified pitch needle penetrations decreasing value, softening point increase
Value and 5 DEG C of ductility decreasing value are respectively less than control sample.It is similar to Example 1, the double hydrogen-oxygens of sodium lignin sulfonate grafting 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
160 DEG C, above-mentioned 4 parts of sodium lignin sulfonate grafting magnesium-aluminum-based laminar double hydroxide modifying agent is added, start high-speed shearing machine,
High-speed stirred 1 hour under the rotating speed of 4000rpm, keeping temperature is 160 DEG C ± 5 DEG C, that is, the modified drips of ultraviolet aging resistance SBR are obtained
It is blue or green.
Ultraviolet accelerated ageing testing is carried out to ultraviolet aging resistance SBR modified pitch and original SBR modified pitch (control sample),
Then, its needle penetration, softening point and 5 DEG C of ductilities are tested respectively, and test result is listed in table 3.
Performance change before and after the ultraviolet aging resistance SBR modified pitch of table 3 and control sample ultraviolet ageing
By comparing, after ultraviolet ageing, ultraviolet aging resistance SBR modified pitch needle penetrations decreasing value, softening point increase
Value and 5 DEG C of ductility decreasing value are respectively less than control sample.It is similar to Example 1, the double hydrogen-oxygens of sodium lignin sulfonate grafting 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, above-mentioned 6 parts of sodium lignin sulfonate grafting magnesium-aluminum-based laminar double hydroxide modifying agent is added, high-speed shearing machine is started,
High-speed stirred 1 hour under the rotating speed of 4000rpm, keeping temperature is 160 DEG C ± 5 DEG C, that is, the modified drips of ultraviolet aging resistance SBR are obtained
It is blue or green.
Ultraviolet accelerated ageing testing is carried out to ultraviolet aging resistance SBR modified pitch and original SBR modified pitch (control sample),
Then, its needle penetration, softening point and 5 DEG C of ductilities are tested respectively, and test result is listed in table 4.
Performance change before and after the ultraviolet aging resistance SBR modified pitch of table 4 and control sample ultraviolet ageing
By comparing, after ultraviolet ageing, ultraviolet aging resistance SBR modified pitch needle penetrations decreasing value, softening point increase
Value and 5 DEG C of ductility decreasing value are respectively less than control sample.It is similar to Example 1, the double hydrogen-oxygens of sodium lignin sulfonate grafting 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, above-mentioned 7 parts of sodium lignin sulfonate grafting magnesium-aluminum-based laminar double hydroxide modifying agent is added, high-speed shearing machine is started,
High-speed stirred 1 hour under the rotating speed of 4000rpm, keeping temperature is 160 DEG C ± 5 DEG C, that is, the modified drips of ultraviolet aging resistance SBR are obtained
It is blue or green.
Ultraviolet accelerated ageing testing is carried out to ultraviolet aging resistance SBR modified pitch and original SBR modified pitch (control sample),
Then, its needle penetration, softening point and 5 DEG C of ductilities are tested respectively, and test result is listed in table 5.
Performance change before and after the ultraviolet aging resistance SBR modified pitch of table 5 and control sample ultraviolet ageing
By comparing, after ultraviolet ageing, ultraviolet aging resistance SBR modified pitch needle penetrations decreasing value, softening point increase
Value and 5 DEG C of ductility decreasing value are respectively less than control sample.It is similar to Example 1, the double hydrogen-oxygens of sodium lignin sulfonate grafting 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, is carried 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, starts high-speed shearing machine, high-speed stirred 1 hour under the rotating speed of 4000rpm, keeps temperature
It is 160 DEG C ± 5 DEG C to spend, that is, ultraviolet aging resistance SBR modified pitch is obtained.
Described SBR modified pitch, its 25 DEG C of needle penetrations are 60~120dmm, and softening point is more than 50 DEG C, and 5 DEG C of ductilities are more 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, is carried 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, starts high-speed shearing machine, high-speed stirred 1 hour under the rotating speed of 4000rpm, keeps temperature
It is 160 DEG C ± 5 DEG C to spend, that is, ultraviolet aging resistance SBR modified pitch is obtained.
Described SBR modified pitch, its 25 DEG C of needle penetrations are 60~120dmm, and softening point is more than 50 DEG C, and 5 DEG C of ductilities are more 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 (7)
1. sodium lignin sulfonate is grafted magnesium-aluminum-based laminar double hydroxide modifying agent, it is characterized in that by lignin and magnalium basic unit
The grafting of shape double-hydroxide is prepared.
2. sodium lignin sulfonate as claimed in claim 1 is grafted the preparation method of magnesium-aluminum-based laminar double hydroxide modifying agent,
It is characterized in that comprising the following steps：First by antifebrin, toluene di-isocyanate(TDI) and dry toluene in mass ratio 13:10:77 match somebody with somebody
Solution is made, stirring reaction 1 hour at 70 DEG C obtains toluene di-isocyanate(TDI)-antifebrin solution；Again will be dry at 120 DEG C
The magnesium-aluminum-based laminar double hydroxide that room temperature is cooled to after dry 2 hours is 40 with dry toluene in mass ratio:60 are configured to magnalium
Base layered double-hydroxide-toluene mixed solution, then with toluene di-isocyanate(TDI)-antifebrin solution in mass ratio 90:10
Ratio mix, stirring reaction 2 hours, obtain solution at 70 DEG C；Mass fraction is finally pressed by 10 parts of sodium lignin sulfonates
It is added in 90 parts of resulting solutions, stirring reaction 2 hours at 100 DEG C；Product decompression suction filtration is washed after the completion of reaction
Wash 3 times, be subsequently placed in drying in the baking oven that temperature is 100 DEG C, take out drying solid and crushed in high speed disintegrator, that is, obtain wood
Quality sodium sulfonate is grafted magnesium-aluminum-based laminar double hydroxide modifying agent.
3. a kind of ultraviolet aging resistance SBR modified pitch, it is characterized in that by SBR modified pitch, sodium lignin sulfonate grafting magnesium-aluminum-based
Layered double-hydroxide modifying agent is constituted, and mass percent shared by each raw material is：SBR modified pitch 90%~99%, lignin
Sodium sulfonate grafting magnesium-aluminum-based laminar double hydroxide modifying agent 1~10%.
4. a kind of ultraviolet aging resistance SBR modified pitch according to claim 3, it is characterised in that：The modified drips of described SBR
Green grass or young crops, its 25 DEG C of needle penetrations are 60~120dmm, and softening point is more than 50 DEG C, and 5 DEG C of ductilities are more than 40cm.
5. a kind of ultraviolet aging resistance SBR modified pitch according to claim 3, it is characterised in that：The lignin sulfonic acid
Sodium grafting magnesium-aluminum-based laminar double hydroxide modifying agent preparation method be：First by antifebrin, toluene di-isocyanate(TDI) and nothing
Water-toluene in mass ratio 13:10:77 are configured to solution, stirring reaction 1 hour at 70 DEG C, obtain toluene di-isocyanate(TDI)-second
Anilide solution；To be cooled to after 2 hours in 120 DEG C of dryings again the magnesium-aluminum-based laminar double hydroxide of room temperature and dry toluene by
Mass ratio is 40:60 are configured to magnesium-aluminum-based laminar double hydroxide-toluene mixed solution, then with toluene di-isocyanate(TDI)-second
Anilide solution in mass ratio 90:10 ratio is mixed, and stirring reaction 2 hours, obtain solution at 70 DEG C；Finally press quality
Be added to 10 parts of sodium lignin sulfonates in 90 parts of resulting solutions by number, stirring reaction 2 hours at 100 DEG C；Terminate in reaction
Afterwards by product decompression filtering and washing 3 times, it is subsequently placed in the baking oven that temperature is 100 DEG C and dries, takes out drying solid in height
Crushed in fast pulverizer, that is, obtain sodium lignin sulfonate grafting magnesium-aluminum-based laminar double hydroxide modifying agent.
6. a kind of preparation method of ultraviolet aging resistance SBR modified pitch as claimed in claim 3, it is characterized in that including walking as follows
Suddenly：
(1) mass percent as shared by each raw material is：SBR modified pitch 90%~99%, sodium lignin sulfonate is 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
Agent, starts high-speed shearing machine, high-speed stirred 1 hour under the rotating speed of 4000rpm, and keeping temperature is 160 DEG C ± 5 DEG C, that is, be obtained
Ultraviolet aging resistance SBR modified pitch.
7. the preparation method of a kind of ultraviolet aging resistance SBR modified pitch according to claim 6, it is characterized in that：The wood
Quality sodium sulfonate grafting magnesium-aluminum-based laminar double hydroxide modifying agent preparation method be：First by antifebrin, toluene diisocyanate
Acid esters and dry toluene in mass ratio 13:10:77 are configured to solution, and stirring reaction 1 hour, obtains toluene diisocyanate at 70 DEG C
Acid esters-antifebrin solution；The magnesium-aluminum-based laminar double hydroxide and nothing of room temperature will be cooled to after 2 hours in 120 DEG C of dryings again
Water-toluene is 40 in mass ratio:60 are configured to magnesium-aluminum-based laminar double hydroxide-toluene mixed solution, then with toluene diisocyanate
Acid esters-antifebrin solution in mass ratio 90:10 ratio is mixed, and stirring reaction 2 hours, obtain solution at 70 DEG C；Most
10 parts of sodium lignin sulfonates are added in 90 parts of resulting solutions by mass fraction afterwards, stirring reaction 2 hours at 100 DEG C；
Reaction terminate after by product decompression filtering and washing 3 times, be subsequently placed in the baking oven that temperature is 100 DEG C and dry, take out drying
Solid is crushed in high speed disintegrator, that is, obtain sodium lignin sulfonate grafting magnesium-aluminum-based laminar double hydroxide modifying agent.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| 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 |
| CN115160666A (en) * | 2022-02-22 | 2022-10-11 | 湖北工程学院 | Sodium lignosulfonate polyurethane/SBR composite modifier and preparation method and application thereof |
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| CN102181162A (en) * | 2011-03-21 | 2011-09-14 | 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 |
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| CN102181162A (en) * | 2011-03-21 | 2011-09-14 | 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 |
| CN102718986A (en) * | 2012-05-09 | 2012-10-10 | 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 |
| CN105664866A (en) * | 2016-01-16 | 2016-06-15 | 北京化工大学 | Application of ligninsulfonate-intercalated hydrotalcite |
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| 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 |
| 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 |
| CN115160666A (en) * | 2022-02-22 | 2022-10-11 | 湖北工程学院 | Sodium lignosulfonate polyurethane/SBR composite modifier and preparation method and application thereof |
| CN115160666B (en) * | 2022-02-22 | 2024-04-09 | 湖北工程学院 | Sodium lignin sulfonate polyurethane/SBR composite modifier and preparation method and application thereof |
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