CN116874970B - Carboxyl styrene-butadiene latex composite material and preparation method thereof - Google Patents
Carboxyl styrene-butadiene latex composite material and preparation method thereof Download PDFInfo
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- 239000004816 latex Substances 0.000 title claims abstract description 45
- 229920000126 latex Polymers 0.000 title claims abstract description 45
- 239000002131 composite material Substances 0.000 title claims abstract description 44
- FDYSSWYQRTVFIS-UHFFFAOYSA-N buta-1,3-diene 3-phenylprop-2-enoic acid Chemical compound C=CC=C.C(=O)(O)C=CC1=CC=CC=C1 FDYSSWYQRTVFIS-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 42
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 26
- 239000000440 bentonite Substances 0.000 claims abstract description 26
- 239000006185 dispersion Substances 0.000 claims abstract description 22
- -1 1-vinyl-3-butylimidazole hexafluorophosphate Chemical compound 0.000 claims abstract description 20
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000001768 carboxy methyl cellulose Substances 0.000 claims abstract description 15
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 claims abstract description 15
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 claims abstract description 15
- 238000002156 mixing Methods 0.000 claims abstract description 11
- 238000003756 stirring Methods 0.000 claims description 36
- 239000007788 liquid Substances 0.000 claims description 24
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims description 22
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 22
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 18
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 18
- 239000002174 Styrene-butadiene Substances 0.000 claims description 13
- 238000001291 vacuum drying Methods 0.000 claims description 13
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 11
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 11
- FRQQKWGDKVGLFI-UHFFFAOYSA-N 2-methylundecane-2-thiol Chemical compound CCCCCCCCCC(C)(C)S FRQQKWGDKVGLFI-UHFFFAOYSA-N 0.000 claims description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 11
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 11
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 239000008367 deionised water Substances 0.000 claims description 11
- 229910021641 deionized water Inorganic materials 0.000 claims description 11
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 11
- 239000011115 styrene butadiene Substances 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 9
- 239000003999 initiator Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 9
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 9
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 7
- 238000000227 grinding Methods 0.000 claims description 7
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 230000035484 reaction time Effects 0.000 claims description 2
- 239000002608 ionic liquid Substances 0.000 abstract description 6
- 239000011159 matrix material Substances 0.000 abstract description 4
- 238000007259 addition reaction Methods 0.000 abstract description 2
- 239000001257 hydrogen Substances 0.000 abstract description 2
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 abstract description 2
- 239000011229 interlayer Substances 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 7
- 229910001873 dinitrogen Inorganic materials 0.000 description 7
- 229920001971 elastomer Polymers 0.000 description 7
- 239000005060 rubber Substances 0.000 description 7
- 229920003051 synthetic elastomer Polymers 0.000 description 7
- 239000005061 synthetic rubber Substances 0.000 description 7
- 244000043261 Hevea brasiliensis Species 0.000 description 6
- 238000007599 discharging Methods 0.000 description 6
- 229920003052 natural elastomer Polymers 0.000 description 6
- 229920001194 natural rubber Polymers 0.000 description 6
- 239000004927 clay Substances 0.000 description 3
- 239000008204 material by function Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000000945 filler Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 241000221020 Hevea Species 0.000 description 1
- 239000006057 Non-nutritive feed additive Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000007900 aqueous suspension Substances 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910000281 calcium bentonite Inorganic materials 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 229920003211 cis-1,4-polyisoprene Polymers 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000007306 functionalization reaction Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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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
- C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L51/10—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to inorganic materials
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F292/00—Macromolecular compounds obtained by polymerising monomers on to inorganic materials
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Graft Or Block Polymers (AREA)
Abstract
The invention discloses a carboxyl styrene-butadiene latex composite material and a preparation method thereof, wherein ionic liquid 1-vinyl-3-butylimidazole hexafluorophosphate is utilized to modify bentonite, the ionic liquid containing double bonds is attached to the surface and the interlayer of the bentonite, the dispersion performance of the bentonite in a carboxyl styrene-butadiene latex matrix is improved, meanwhile, double bond addition reaction is carried out between the ionic liquid containing double bonds and the carboxyl styrene-butadiene latex matrix, the bonding strength between the bentonite and the carboxyl styrene-butadiene latex is increased, the mechanical performance of the composite material is further improved, then the composite material is prepared by adopting a mode of blending sodium carboxymethyl cellulose solution and the carboxyl styrene-butadiene latex into a film, a large number of hydrogen bonds are formed between hydroxyl groups in sodium carboxymethyl cellulose and the carboxyl styrene-butadiene latex, and finally, a supermolecular network structure is formed, and the mechanical performance of the composite material is further improved.
Description
Technical Field
The invention relates to the technical field of composite material preparation, in particular to a carboxyl styrene-butadiene latex composite material and a preparation method thereof.
Background
Rubber and rubber products are widely used in various aspects of human life. Rubber is divided into two major classes, namely Natural Rubber (NR) and synthetic rubber, wherein NR is mainly derived from Hevea rubber, and is natural renewable rubber with excellent comprehensive performance; the synthetic rubber is a high-elasticity polymer synthesized by a chemical method, and compared with an NR product with higher price, the synthetic rubber can reduce the industrial production cost. Therefore, synthetic rubber is favored by a large amount of capital, and is rapidly developed, and occupies two thirds of the whole rubber market, wherein the performance of (styrene-butadiene rubber) SBR is close to NR, and certain performances such as wear resistance, heat resistance, aging resistance and the like are better than NR, so that the synthetic rubber is the first large variety of synthetic rubber and occupies one third of the total productivity of the synthetic rubber.
As the modern industry pursues the functionalization and diversification of products, various series products with the brand number of hundreds are developed by improving the production process of SBR, wherein a small amount of carboxylic acid and auxiliary agents are added in the production process of the emulsion polymerized styrene-butadiene rubber to generate a copolymer- (carboxyl styrene-butadiene rubber) XSBR, and the polarity of the latex is increased due to the introduction of carboxyl, so that the XSBR which is a commercialized product has more application possibility in the field of functional materials.
In order to find out the application of XSBR in high-molecular functional materials, in recent years, the XSBR is blended with various fillers and processed and molded by different processes, and a series of novel rubber composite materials with different performances are prepared by selecting different fillers, different component proportions and processing aids, so that on the basis of the existing XSBR, different types of additives are selected, and the novel functional materials are obtained by simple blending modification, for example, chinese patent document CN200910100868.8 discloses a method for preparing the inorganic clay and carboxyl styrene-butadiene rubber composite material, wherein an inorganic clay aqueous suspension is mixed with carboxyl styrene-butadiene latex to form uniform mixed liquid, and then the clay and carboxyl styrene-butadiene rubber composite material is obtained through drying, mixing and vulcanizing.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims at a carboxyl styrene-butadiene latex composite material and a preparation method thereof, and the prepared composite material has good mechanical properties.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a preparation method of a carboxyl styrene-butadiene latex composite material comprises the following steps:
s1, ultrasonically dispersing bentonite in ethanol, then adding 1-vinyl-3-butylimidazole hexafluorophosphate into the bentonite, stirring and dispersing the bentonite uniformly at room temperature, and then standing, suction filtering, drying and grinding the bentonite to obtain modified bentonite;
s2, adding modified bentonite, sodium dodecyl sulfate and tertiary dodecyl mercaptan into deionized water, uniformly stirring, introducing nitrogen to discharge air, then adding butadiene, styrene and acrylic acid into the mixture, stirring and heating to 60-70 ℃, adding initiator potassium persulfate, and reacting to obtain a dispersion after the reaction is finished;
and S3, adding the sodium carboxymethyl cellulose solution into the dispersion liquid, stirring and mixing uniformly to obtain a mixed liquid, transferring the mixed liquid into a polytetrafluoroethylene mould, and vacuum drying to obtain the carboxyl styrene-butadiene latex composite material.
Preferably, in the step S1, the mass ratio of the bentonite to the ethanol to the 1-vinyl-3-butylimidazole hexafluorophosphate is 10-15:150-200:2-3.
Preferably, in the step S1, the stirring and dispersing speed is 600-800r/min, and the stirring and dispersing time is 3-5h.
Preferably, in the step S2, the mass ratio of the modified bentonite to the sodium dodecyl sulfate to the tertiary dodecyl mercaptan to the deionized water to the butadiene to the styrene to the acrylic acid to the potassium persulfate is 4-6:1-3:1-2:100-150:15-20:20-25:5-10:0.5-1.
Preferably, in step S2, the reaction temperature is 60-70 ℃ and the reaction time is 2-3h.
Preferably, in step S3, the mass ratio of the sodium carboxymethyl cellulose solution to the dispersion is 10-20:100.
Preferably, in the step S3, the mass fraction of the sodium carboxymethyl cellulose solution is 10-15%.
Preferably, in step S3, the vacuum drying temperature is 40-60 ℃ and the vacuum drying time is 2-4h.
The invention also provides the carboxyl styrene-butadiene latex composite material prepared by the preparation method.
Compared with the prior art, the invention has the following beneficial effects:
(1) According to the invention, ionic liquid 1-vinyl-3-butylimidazole hexafluorophosphate is used for modifying bentonite, and the ionic liquid containing double bonds is attached to the surface and the interlayer of the bentonite, so that the dispersion performance of the bentonite in the carboxylic styrene-butadiene latex matrix is improved, meanwhile, double bond addition reaction occurs between the ionic liquid containing double bonds and the carboxylic styrene-butadiene latex matrix, the bonding strength between the bentonite and the carboxylic styrene-butadiene latex is increased, and the mechanical property of the composite material is further improved.
(2) The invention prepares the composite material by adopting a mode of blending the sodium carboxymethyl cellulose solution and the carboxyl styrene-butadiene latex to form a film, and hydroxyl groups in the sodium carboxymethyl cellulose and the carboxyl styrene-butadiene latex form a large number of hydrogen bonds to finally form a supermolecular network structure, thereby further improving the mechanical property of the composite material.
Detailed Description
The present invention will be described in further detail with reference to the following preferred examples, but the present invention is not limited to the following examples.
Unless otherwise specified, the chemical reagents involved in the present invention are all commercially available.
The bentonite used in the invention is calcium bentonite, and the particle size is 200nm.
Example 1
A preparation method of a carboxyl styrene-butadiene latex composite material comprises the following steps:
s1, ultrasonically dispersing 10g of bentonite in 150g of ethanol, then adding 2g of 1-vinyl-3-butylimidazole hexafluorophosphate into the solution, stirring and dispersing the solution for 3 hours at room temperature and a rotating speed of 800r/min, and then standing, suction filtering, drying and grinding the solution to obtain modified bentonite;
s2, adding 4g of modified bentonite, 1g of sodium dodecyl sulfate and 1g of tertiary dodecyl mercaptan into 100g of deionized water, uniformly stirring, introducing nitrogen gas, discharging air, adding 15g of butadiene, 20g of styrene and 5g of acrylic acid into the mixture, stirring and heating to 60 ℃, adding 0.5g of initiator potassium persulfate, and reacting for 2 hours at 60 ℃ to obtain a dispersion after the reaction is finished;
s3, adding 10g of 10wt% sodium carboxymethyl cellulose solution into 100g of dispersion liquid, stirring and mixing uniformly at the rotating speed of 10000r/min to obtain mixed liquid, transferring the mixed liquid into a polytetrafluoroethylene mould, and vacuum drying for 4h at 40 ℃ to obtain the carboxyl styrene-butadiene latex composite material.
Example 2
A preparation method of a carboxyl styrene-butadiene latex composite material comprises the following steps:
s1, ultrasonically dispersing 15g of bentonite in 200g of ethanol, then adding 3g of 1-vinyl-3-butylimidazole hexafluorophosphate into the solution, stirring and dispersing the solution for 3 hours at room temperature and a rotating speed of 800r/min, and then standing, suction filtering, drying and grinding the solution to obtain modified bentonite;
s2, adding 5g of modified bentonite, 2g of sodium dodecyl sulfate and 2g of tertiary dodecyl mercaptan into 100g of deionized water, uniformly stirring, introducing nitrogen gas, discharging air, adding 20g of butadiene, 25g of styrene and 10g of acrylic acid into the mixture, stirring and heating to 60 ℃, adding 0.8g of initiator potassium persulfate, and reacting for 3 hours at 70 ℃ to obtain a dispersion after the reaction is finished;
s3, adding 20g of 10wt% sodium carboxymethyl cellulose solution into 100g of dispersion liquid, stirring and mixing uniformly at the rotating speed of 10000r/min to obtain mixed liquid, transferring the mixed liquid into a polytetrafluoroethylene mould, and vacuum drying at 60 ℃ for 3 hours to obtain the carboxyl styrene-butadiene latex composite material.
Example 3
A preparation method of a carboxyl styrene-butadiene latex composite material comprises the following steps:
s1, ultrasonically dispersing 12g of bentonite in 200g of ethanol, then adding 2g of 1-vinyl-3-butylimidazole hexafluorophosphate into the solution, stirring and dispersing the solution for 5 hours at room temperature and a rotating speed of 600r/min, and then standing, suction filtering, drying and grinding the solution to obtain modified bentonite;
s2, adding 6g of modified bentonite, 3g of sodium dodecyl sulfate and 1g of tertiary dodecyl mercaptan into 150g of deionized water, uniformly stirring, introducing nitrogen gas, discharging air, then adding 16g of butadiene, 24g of styrene and 8g of acrylic acid into the mixture, stirring and heating to 60 ℃, adding 1g of initiator potassium persulfate, reacting for 3 hours at 70 ℃, and obtaining a dispersion after the reaction is finished;
s3, adding 10g of 15wt% sodium carboxymethyl cellulose solution into 100g of dispersion liquid, stirring and mixing uniformly at the rotating speed of 10000r/min to obtain mixed liquid, transferring the mixed liquid into a polytetrafluoroethylene mould, and vacuum drying at 60 ℃ for 3 hours to obtain the carboxyl styrene-butadiene latex composite material.
Example 4
A preparation method of a carboxyl styrene-butadiene latex composite material comprises the following steps:
s1, ultrasonically dispersing 10g of bentonite in 200g of ethanol, then adding 3g of 1-vinyl-3-butylimidazole hexafluorophosphate into the solution, stirring and dispersing the solution for 5 hours at room temperature and a rotating speed of 600r/min, and then standing, suction filtering, drying and grinding the solution to obtain modified bentonite;
s2, adding 5g of modified bentonite, 3g of sodium dodecyl sulfate and 2g of tertiary dodecyl mercaptan into 150g of deionized water, uniformly stirring, introducing nitrogen gas, discharging air, then adding 18g of butadiene, 25g of styrene and 6g of acrylic acid into the mixture, stirring and heating to 60 ℃, adding 1g of initiator potassium persulfate, reacting for 2 hours at 70 ℃, and obtaining a dispersion after the reaction is finished;
s3, adding 15g of 15wt% sodium carboxymethyl cellulose solution into 100g of dispersion liquid, stirring and mixing uniformly at the rotating speed of 10000r/min to obtain mixed liquid, transferring the mixed liquid into a polytetrafluoroethylene mould, and vacuum drying at 60 ℃ for 3 hours to obtain the carboxyl styrene-butadiene latex composite material.
Comparative example 1
A preparation method of a carboxyl styrene-butadiene latex composite material comprises the following steps:
adding 4g of bentonite, 1g of sodium dodecyl sulfate and 1g of tertiary dodecyl mercaptan into 100g of deionized water, uniformly stirring, introducing nitrogen gas, discharging air, then adding 15g of butadiene, 20g of styrene and 5g of acrylic acid into the mixture, stirring and heating to 60 ℃, adding 0.5g of initiator potassium persulfate, reacting for 2 hours at 60 ℃, and obtaining a dispersion after the reaction is finished; and transferring the dispersion liquid into a polytetrafluoroethylene mould, and vacuum drying for 4 hours at 40 ℃ to obtain the carboxyl styrene-butadiene latex composite material.
Comparative example 2
A preparation method of a carboxyl styrene-butadiene latex composite material comprises the following steps:
s1, ultrasonically dispersing 10g of bentonite in 150g of ethanol, then adding 2g of 1-vinyl-3-butylimidazole hexafluorophosphate into the solution, stirring and dispersing the solution for 3 hours at room temperature and a rotating speed of 800r/min, and then standing, suction filtering, drying and grinding the solution to obtain modified bentonite;
s2, adding 4g of modified bentonite, 1g of sodium dodecyl sulfate and 1g of tertiary dodecyl mercaptan into 100g of deionized water, uniformly stirring, introducing nitrogen gas, discharging air, adding 15g of butadiene, 20g of styrene and 5g of acrylic acid into the mixture, stirring and heating to 60 ℃, adding 0.5g of initiator potassium persulfate, and reacting for 2 hours at 60 ℃ to obtain a dispersion after the reaction is finished;
s3, transferring the dispersion liquid into a polytetrafluoroethylene mould, and vacuum drying for 4 hours at 40 ℃ to obtain the carboxyl styrene-butadiene latex composite material.
Comparative example 3
A preparation method of a carboxyl styrene-butadiene latex composite material comprises the following steps:
s1, adding 4g of bentonite, 1g of sodium dodecyl sulfate and 1g of tertiary dodecyl mercaptan into 100g of deionized water, uniformly stirring, introducing nitrogen gas to discharge air, then adding 15g of butadiene, 20g of styrene and 5g of acrylic acid into the mixture, stirring and heating to 60 ℃, adding 0.5g of initiator potassium persulfate, reacting for 2 hours at 60 ℃, and obtaining a dispersion after the reaction is finished;
s2, adding 10g of 10wt% sodium carboxymethyl cellulose solution into 100g of dispersion liquid, stirring and mixing uniformly at the rotating speed of 10000r/min to obtain mixed liquid, transferring the mixed liquid into a polytetrafluoroethylene mould, and vacuum drying for 4h at 40 ℃ to obtain the carboxyl styrene-butadiene latex composite material.
The carboxylic styrene-butadiene latex composite materials prepared in examples 1-4 and comparative examples 1-3 were subjected to mechanical property test, and the specific steps are as follows: the mechanical properties were tested at room temperature using an electronic tensile tester according to ASTM D412, the tensile speed was 100mm/min, the test specimens (thickness 1 mm) were punched into dumbbell shapes, each sample was tested 3 times, the test results were averaged, and the test results are shown in table 1:
TABLE 1
| Longitudinal tensile Strength (MPa) | Elongation at break in machine direction (%) | |
| Example 1 | 14.3 | 266 |
| Example 2 | 15.1 | 295 |
| Example 3 | 15.0 | 283 |
| Example 4 | 14.6 | 270 |
| Comparative example 1 | 4.7 | 154 |
| Comparative example 2 | 9.9 | 218 |
| Comparative example 3 | 7.5 | 187 |
Finally, it should be noted that: the above examples are not intended to limit the present invention in any way. Modifications and improvements will readily occur to those skilled in the art upon the basis of the present invention. Accordingly, any modification or improvement made without departing from the spirit of the invention is within the scope of the invention as claimed.
Claims (9)
1. The preparation method of the carboxyl styrene-butadiene latex composite material is characterized by comprising the following steps of:
s1, ultrasonically dispersing bentonite in ethanol, then adding 1-vinyl-3-butylimidazole hexafluorophosphate into the bentonite, stirring and dispersing the bentonite uniformly at room temperature, and then standing, suction filtering, drying and grinding the bentonite to obtain modified bentonite;
s2, adding modified bentonite, sodium dodecyl sulfate and tertiary dodecyl mercaptan into deionized water, uniformly stirring, introducing nitrogen to discharge air, then adding butadiene, styrene and acrylic acid into the mixture, stirring and heating to 60-70 ℃, adding initiator potassium persulfate, and reacting to obtain a dispersion after the reaction is finished;
and S3, adding the sodium carboxymethyl cellulose solution into the dispersion liquid, stirring and mixing uniformly to obtain a mixed liquid, transferring the mixed liquid into a polytetrafluoroethylene mould, and vacuum drying to obtain the carboxyl styrene-butadiene latex composite material.
2. The method for preparing the carboxylated styrene-butadiene latex composite material according to claim 1, wherein in the step S1, the mass ratio of bentonite to ethanol to 1-vinyl-3-butylimidazole hexafluorophosphate is 10-15:150-200:2-3.
3. The method for preparing a carboxylated styrene-butadiene latex composite material according to claim 1, wherein in the step S1, the stirring and dispersing speed is 600-800r/min, and the stirring and dispersing time is 3-5h.
4. The preparation method of the carboxyl styrene-butadiene latex composite material according to claim 1, wherein in the step S2, the mass ratio of the modified bentonite to the sodium dodecyl sulfate to the tertiary dodecyl mercaptan to the deionized water to the butadiene to the styrene to the acrylic acid to the potassium persulfate is 4-6:1-3:1-2:100-150:15-20:20-25:5-10:0.5-1.
5. The method for preparing a carboxylated styrene-butadiene latex composite material according to claim 1, wherein in the step S2, the reaction temperature is 60-70 ℃ and the reaction time is 2-3h.
6. The method for preparing a carboxylated styrene-butadiene latex composite material according to claim 1, wherein in the step S3, the mass ratio of the sodium carboxymethyl cellulose solution to the dispersion is 10-20:100.
7. The method for preparing a carboxylated styrene-butadiene latex composite material according to claim 1, wherein in the step S3, the mass fraction of the sodium carboxymethyl cellulose solution is 10-15%.
8. The method for preparing a carboxylated styrene-butadiene latex composite material according to claim 1, wherein in the step S3, the vacuum drying temperature is 40-60 ℃ and the vacuum drying time is 2-4h.
9. The carboxylated styrene-butadiene latex composite material prepared by the preparation method according to any one of claims 1 to 8.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08198617A (en) * | 1995-01-19 | 1996-08-06 | Kunimine Kogyo Kk | Modified bentonite and its production |
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| CN113512147A (en) * | 2021-06-29 | 2021-10-19 | 江西岳峰集团环保新材有限公司 | Preparation method of high-performance carboxylic styrene-butadiene latex |
| CN115636419A (en) * | 2022-10-19 | 2023-01-24 | 辽宁石油化工大学 | Preparation method of N-isopropylacrylamide temperature-sensitive modified bentonite with sodium carboxymethylcellulose intercalation |
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| JPH08198617A (en) * | 1995-01-19 | 1996-08-06 | Kunimine Kogyo Kk | Modified bentonite and its production |
| CN101613498A (en) * | 2009-07-16 | 2009-12-30 | 周红伟 | The preparation method of inorganic clay and carboxylic styrene-butadiene rubber matrix material |
| CN101891868A (en) * | 2010-07-29 | 2010-11-24 | 浙江长安仁恒科技股份有限公司 | Method for preparing carboxylated styrene-butadiene latex |
| CN113512147A (en) * | 2021-06-29 | 2021-10-19 | 江西岳峰集团环保新材有限公司 | Preparation method of high-performance carboxylic styrene-butadiene latex |
| CN115636419A (en) * | 2022-10-19 | 2023-01-24 | 辽宁石油化工大学 | Preparation method of N-isopropylacrylamide temperature-sensitive modified bentonite with sodium carboxymethylcellulose intercalation |
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