CN113637268B - Composition with good dielectric property and suitable for electrical field and preparation method thereof - Google Patents
Composition with good dielectric property and suitable for electrical field and preparation method thereof Download PDFInfo
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- 239000000203 mixture Substances 0.000 title claims abstract description 42
- 230000005684 electric field Effects 0.000 title claims abstract description 20
- 238000002360 preparation method Methods 0.000 title description 6
- 239000003995 emulsifying agent Substances 0.000 claims abstract description 69
- 239000004816 latex Substances 0.000 claims abstract description 51
- 229920000126 latex Polymers 0.000 claims abstract description 51
- 239000008367 deionised water Substances 0.000 claims abstract description 47
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 47
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims abstract description 36
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000003999 initiator Substances 0.000 claims abstract description 35
- 238000006243 chemical reaction Methods 0.000 claims abstract description 34
- 239000007864 aqueous solution Substances 0.000 claims abstract description 33
- 229920001971 elastomer Polymers 0.000 claims abstract description 32
- 229920000578 graft copolymer Polymers 0.000 claims abstract description 32
- 239000005060 rubber Substances 0.000 claims abstract description 32
- 229940126062 Compound A Drugs 0.000 claims abstract description 31
- NLDMNSXOCDLTTB-UHFFFAOYSA-N Heterophylliin A Natural products O1C2COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC2C(OC(=O)C=2C=C(O)C(O)=C(O)C=2)C(O)C1OC(=O)C1=CC(O)=C(O)C(O)=C1 NLDMNSXOCDLTTB-UHFFFAOYSA-N 0.000 claims abstract description 31
- 238000001914 filtration Methods 0.000 claims abstract description 26
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical group C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000005406 washing Methods 0.000 claims abstract description 20
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 19
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 18
- 239000011347 resin Substances 0.000 claims abstract description 18
- 229920005989 resin Polymers 0.000 claims abstract description 18
- 238000001035 drying Methods 0.000 claims abstract description 16
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 150000002825 nitriles Chemical class 0.000 claims abstract description 7
- 238000009833 condensation Methods 0.000 claims abstract description 4
- 230000005494 condensation Effects 0.000 claims abstract description 4
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 60
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 30
- 238000003756 stirring Methods 0.000 claims description 28
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 20
- 238000009210 therapy by ultrasound Methods 0.000 claims description 13
- YCIMNLLNPGFGHC-UHFFFAOYSA-N catechol Chemical compound OC1=CC=CC=C1O YCIMNLLNPGFGHC-UHFFFAOYSA-N 0.000 claims description 12
- 239000011259 mixed solution Substances 0.000 claims description 10
- 229910052757 nitrogen Inorganic materials 0.000 claims description 10
- 230000000379 polymerizing effect Effects 0.000 claims description 10
- 238000009775 high-speed stirring Methods 0.000 claims description 9
- 239000002202 Polyethylene glycol Substances 0.000 claims description 8
- 229920001223 polyethylene glycol Polymers 0.000 claims description 8
- 150000001875 compounds Chemical class 0.000 claims description 7
- 239000002904 solvent Substances 0.000 claims description 7
- QSNSCYSYFYORTR-UHFFFAOYSA-N 4-chloroaniline Chemical compound NC1=CC=C(Cl)C=C1 QSNSCYSYFYORTR-UHFFFAOYSA-N 0.000 claims description 6
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 6
- 238000005086 pumping Methods 0.000 claims description 6
- 239000008096 xylene Substances 0.000 claims description 6
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims description 5
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 claims description 5
- 239000000344 soap Substances 0.000 claims description 5
- 239000011734 sodium Substances 0.000 claims description 5
- 229910052708 sodium Inorganic materials 0.000 claims description 5
- 239000000243 solution Substances 0.000 claims description 5
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 claims description 5
- SLUNEGLMXGHOLY-UHFFFAOYSA-N benzene;hexane Chemical compound CCCCCC.C1=CC=CC=C1 SLUNEGLMXGHOLY-UHFFFAOYSA-N 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- FAIAAWCVCHQXDN-UHFFFAOYSA-N phosphorus trichloride Chemical compound ClP(Cl)Cl FAIAAWCVCHQXDN-UHFFFAOYSA-N 0.000 claims description 4
- 238000010992 reflux Methods 0.000 claims description 4
- -1 sodium alkyl sulfonate Chemical class 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 238000007711 solidification Methods 0.000 claims description 4
- 230000008023 solidification Effects 0.000 claims description 4
- ILWRPSCZWQJDMK-UHFFFAOYSA-N triethylazanium;chloride Chemical compound Cl.CCN(CC)CC ILWRPSCZWQJDMK-UHFFFAOYSA-N 0.000 claims description 4
- HVLLSGMXQDNUAL-UHFFFAOYSA-N triphenyl phosphite Chemical compound C=1C=CC=CC=1OP(OC=1C=CC=CC=1)OC1=CC=CC=C1 HVLLSGMXQDNUAL-UHFFFAOYSA-N 0.000 claims description 4
- 238000004821 distillation Methods 0.000 claims description 3
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 3
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 claims description 3
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical group [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 125000004169 (C1-C6) alkyl group Chemical group 0.000 claims description 2
- LWEAHXKXKDCSIE-UHFFFAOYSA-M 2,3-di(propan-2-yl)naphthalene-1-sulfonate Chemical compound C1=CC=C2C(S([O-])(=O)=O)=C(C(C)C)C(C(C)C)=CC2=C1 LWEAHXKXKDCSIE-UHFFFAOYSA-M 0.000 claims description 2
- FRIBMENBGGCKPD-UHFFFAOYSA-N 3-(2,3-dimethoxyphenyl)prop-2-enal Chemical compound COC1=CC=CC(C=CC=O)=C1OC FRIBMENBGGCKPD-UHFFFAOYSA-N 0.000 claims description 2
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 claims description 2
- 125000002490 anilino group Chemical group [H]N(*)C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 claims description 2
- 229910052739 hydrogen Inorganic materials 0.000 claims description 2
- 239000001257 hydrogen Substances 0.000 claims description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 2
- 238000000967 suction filtration Methods 0.000 claims description 2
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 claims description 2
- 238000001132 ultrasonic dispersion Methods 0.000 abstract 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 14
- 238000012360 testing method Methods 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 6
- 230000007613 environmental effect Effects 0.000 description 6
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 5
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 229920002594 Polyethylene Glycol 8000 Polymers 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 125000004429 atom Chemical group 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000003574 free electron Substances 0.000 description 2
- 150000002391 heterocyclic compounds Chemical class 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 241001522633 Betula utilis subsp. albosinensis Species 0.000 description 1
- 239000008830 Carthamus tinctorius Honghua extract Substances 0.000 description 1
- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Natural products CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 1
- 239000007983 Tris buffer Substances 0.000 description 1
- 229960000583 acetic acid Drugs 0.000 description 1
- 229920001893 acrylonitrile styrene Polymers 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000002671 adjuvant Substances 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000010528 free radical solution polymerization reaction Methods 0.000 description 1
- 239000012362 glacial acetic acid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- SCUZVMOVTVSBLE-UHFFFAOYSA-N prop-2-enenitrile;styrene Chemical compound C=CC#N.C=CC1=CC=CC=C1 SCUZVMOVTVSBLE-UHFFFAOYSA-N 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
- C08L25/02—Homopolymers or copolymers of hydrocarbons
- C08L25/04—Homopolymers or copolymers of styrene
- C08L25/08—Copolymers of styrene
- C08L25/12—Copolymers of styrene with unsaturated nitriles
-
- 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
- C08F279/00—Macromolecular compounds obtained by polymerising monomers on to polymers of monomers having two or more carbon-to-carbon double bonds as defined in group C08F36/00
- C08F279/02—Macromolecular compounds obtained by polymerising monomers on to polymers of monomers having two or more carbon-to-carbon double bonds as defined in group C08F36/00 on to polymers of conjugated dienes
- C08F279/04—Vinyl aromatic monomers and nitriles as the only monomers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
Abstract
The invention discloses a composition with good dielectric property, which is applicable to the electrical field, and is prepared by the following method: 1) Butadiene, acrylonitrile, an initiator, a first emulsifier and deionized water are put into a reaction kettle, and the nitrile latex is obtained through polymerization; 2) Adding a compound A, and performing ultrasonic dispersion; 3) Preparing a second emulsifier aqueous solution, adding the second emulsifier aqueous solution into the reaction system of the step 2), and reacting for 30min; 4) The reaction temperature is increased to 70 ℃, styrene monomer, acrylonitrile monomer, deionized water and a first initiator are added, after 2 hours of reaction, filtration, condensation, washing and drying are carried out, and the rubber graft copolymer is obtained; 5) The SAN resin, the antioxidant and the rubber graft copolymer are extruded by blending to obtain the composition. The composition prepared by the invention has good dielectric property and good comprehensive performance, and is suitable for being applied to the electrical field.
Description
Technical Field
The invention belongs to the field of polymers, and particularly relates to a composition with good dielectric property and a preparation method thereof, which are suitable for the electrical field.
Background
ABS resin refers to acrylonitrile-butadiene-styrene copolymer, ABS is an acronym for Acrylonitrile Butadiene Styrene, which is a thermoplastic polymer material with high strength, good toughness and easy processing and forming.
The common ABS plastic is commonly used in electrical equipment, electrical equipment and other equipment due to excellent mechanical properties, and has high requirements on the insulating property of the material. The dielectric strength is generally used for evaluating the insulation performance of plastics, and as the dielectric strength of common plastics is slightly low, some free electrons always exist in ABS plastics, the free electrons are accelerated under the action of an external electric field to strike neutral atoms, so that the atoms are ionized, and finally, the material breaks down. The plastic breakdown mainly shows insulation property damage, main electric arc is generated at the breakdown point, and the material is perforated, melted, zoomed, burnt and the like.
In the prior art, it is common to improve the dielectric strength of ABS resins by blending some adjuvants. Generally, the higher the dielectric strength, the better the insulating quality of the material.
Because of the change of temperature and environment, the ABS plastic can change, the mechanical property and dielectric strength of the ABS plastic can also change, and particularly, the dielectric strength of the ABS plastic can be reduced under the environment of long-term high temperature, humidity, dirt and oxidation, so that the use requirement cannot be met, and the service life is low.
Disclosure of Invention
The invention aims to provide a composition with good dielectric property, which is suitable for the electrical field, has good dielectric property and good comprehensive performance, and is suitable for being applied to the electrical field.
Further, there is a need for a method for preparing the above composition with good dielectric properties suitable for the electrical field.
A composition with good dielectric property suitable for the electric field is ABS resin,
the ABS is obtained by a solution polymerization method of butadiene, acrylonitrile and styrene, and a phosphorus-containing heterocyclic compound is added as a molecular weight regulator.
The composition with good dielectric property, which is suitable for the electrical field, is prepared by the following method:
1) Butadiene, acrylonitrile, an initiator, a first emulsifier and deionized water are put into a reaction kettle and polymerized for 8-10 hours at 65-80 ℃ to obtain nitrile latex;
2) Adding a phosphorus-containing heterocyclic compound, and then carrying out ultrasonic treatment for 2-3 hours at the temperature of 30-40 ℃;
3) Dissolving a second emulsifier in 30 parts by weight of deionized water to prepare a second emulsifier aqueous solution, and adding the second emulsifier aqueous solution into the reaction system of the step 2) to react for 30 minutes;
4) The reaction temperature is increased to 70 ℃, styrene monomer, acrylonitrile monomer, deionized water and a first initiator are added, after 2 hours of reaction, filtration, condensation, washing and drying are carried out, and the rubber graft copolymer is obtained;
5) SAN resin, antioxidant and rubber graft copolymer are evenly mixed and dispersed, and then are blended and extruded to obtain the composition.
A composition with good dielectric property suitable for the electrical field is prepared by the following method:
1) Butadiene, acrylonitrile, an initiator, a first emulsifier and deionized water are put into a reaction kettle and polymerized for 8-10 hours at 65-80 ℃ to obtain nitrile latex;
2) Adding a compound A, and then carrying out ultrasonic treatment for 2-3 hours at the temperature of 30-40 ℃;
compound a has the following structural formula:r1 is hydrogen, cl or C1-C6 alkyl, R2 is substituted anilino;
3) Dissolving a second emulsifier in 30 parts of deionized water to prepare a second emulsifier aqueous solution, and adding the second emulsifier aqueous solution into the reaction system of the step 2) to react for 30min;
4) The reaction temperature is increased to 70 ℃, styrene monomer, acrylonitrile monomer, deionized water and a first initiator are added, after 2 hours of reaction, filtration, condensation, washing and drying are carried out, and the rubber graft copolymer is obtained;
5) SAN resin, antioxidant and rubber graft copolymer are evenly mixed and dispersed, and then are blended and extruded to obtain the composition.
The composition with good dielectric property, which is suitable for the electrical field, is prepared by the following method:
1) 50-60 parts by weight of butadiene, 20-30 parts by weight of acrylonitrile, 0.1-0.5 part by weight of initiator, 2-5 parts by weight of first emulsifier and 100-150 parts by weight of deionized water are put into a reaction kettle, and polymerized for 8-10 hours at 65-80 ℃ to obtain nitrile latex;
2) Adding a compound A, and then carrying out ultrasonic treatment for 2-3 hours at the temperature of 30-40 ℃;
compound a has the following structural formula:
3) Dissolving 0.5-0.8 part by weight of a second emulsifier in 30 parts by weight of deionized water to prepare a second emulsifier aqueous solution, and adding the second emulsifier aqueous solution into the reaction system of the step 2) to react for 30min;
4) Raising the reaction temperature to 70 ℃, adding 30-40 parts by weight of styrene monomer, 20-25 parts by weight of acrylonitrile monomer, 80-100 parts by weight of deionized water and 0.2-0.5 part by weight of first initiator, reacting for 2 hours, filtering, condensing, washing and drying to obtain a rubber graft copolymer;
5) 75-85 parts of SAN resin, 1-2 parts of antioxidant and 20-30 parts of rubber graft copolymer are uniformly mixed and dispersed, and then the mixture is extruded by blending to obtain the composition.
Further, the composition with good dielectric properties, which is suitable for the electrical field, is preferably prepared by the following method:
1) Introducing nitrogen into a high-pressure reactor provided with a stirrer and a condensing device, keeping the temperature at 60 ℃, adding 50-60 parts by weight of butadiene, 20-30 parts by weight of acrylonitrile, 0.1-0.5 part by weight of initiator, 2-5 parts by weight of first emulsifier and 100-150 parts by weight of deionized water into the reactor, uniformly stirring, and polymerizing at 65-80 ℃ for 8-10 hours to obtain latex 1;
2) Adding 5-8 parts by weight of compound A into latex 1 under high-speed stirring, adding the compound A for 30min, and then performing ultrasonic treatment at 30-40 ℃ for 2-3 hours;
3) Dissolving 0.5-0.8 part by weight of a second emulsifier in 30 parts by weight of deionized water to prepare a second emulsifier aqueous solution, adding the second emulsifier aqueous solution into the reaction system of the step 2) within 1-1.5h under the stirring condition of 20r/min, and reacting for 30min at the temperature of 30 ℃ to obtain latex 2;
4) Raising the temperature of the latex 2 to 70 ℃, adding 32-38 parts by weight of styrene monomer, 20-25 parts by weight of acrylonitrile monomer, 80-100 parts by weight of deionized water and 0.2-0.5 part by weight of first initiator, and reacting for 2 hours; filtering, condensing, washing and drying to obtain rubber graft copolymer powder;
5) 80 parts by weight of SAN resin, 1-2 parts by weight of antioxidant and 25-28 parts by weight of rubber graft copolymer are thoroughly mixed to be uniformly dispersed, and melt blending is carried out in a twin-screw extruder at 200-210 ℃ to obtain the composition.
Wherein, the compound A is prepared by the following method:
1) Adding catechol and xylene into a container, simultaneously dripping phosphorus trichloride and triethylamine from two constant pressure funnels under stirring, stirring at room temperature, refluxing, filtering to remove off-white solid, washing with benzene four times, pumping out solvent, distilling under reduced pressure, and collecting 102 deg.C fraction to obtain
2) Dissolving a compound shown in a formula (V) in benzene to obtain a benzene solution containing the formula (V), dropwise adding the benzene solution containing the formula (V) into a mixed solution consisting of p-chloroaniline, triethylamine and benzene, reacting for 3 hours, filtering the generated triethylamine hydrochloride, removing the solution by suction filtration to obtain a yellow thick liquid, standing for solidification, and recrystallizing with benzene-hexane to obtain the compound A shown in the formula (II).
The method for preparing compound a may be:
1) 0.05 mole fraction of catechol and xylene were added to the vessel in a catechol to xylene ratio of 1 mole: 1L, dropwise adding 0.05mol part of phosphorus trichloride and 0.1mol part of triethylamine from two constant pressure funnels simultaneously under stirring uniformly, stirring for 1h at room temperature, refluxing for 2h, filtering to remove off-white solid, washing four times with benzene, pumping out solvent, and collecting fraction at 102 ℃ under reduced pressure distillation to obtain
2) 0.026mol part of (V) is dissolved in benzene to obtain a mixed solution a, and the ratio of (V) to benzene is 1.3mol:1L; dissolving p-chloroaniline and triethylamine in benzene to obtain a mixed solution b, wherein the ratio of the p-chloroaniline to the triethylamine to the benzene is 1.3mol:1.3mol:1L; dropwise adding the mixed solution a into the mixed solution b at 20 ℃ for reaction for 3 hours, filtering triethylamine hydrochloride, filtering out a solvent by pumping to obtain a yellow thick liquid, standing for solidification, and recrystallizing with benzene-hexane to obtain a substance shown as A (II).
In the preparation of the composition according to the invention, step 2) is added with compound A, which is homogeneously dispersed in the latex 1 (nitrile latex) system, so that in step 3) polymerization, the molecular weight distribution and homogeneity of latex 2 can be regulated, thus finally affecting the overall properties of the composition.
Wherein the initiator is selected from potassium persulfate or cumene hydroperoxide.
Wherein the first emulsifier is one or more selected from sodium dodecyl sulfate, nekal, rosin soap, sodium alkyl sulfonate, sodium alkylaryl sulfonate and polyethylene glycol.
Wherein the second emulsifier is rosin soap or/and polyethylene glycol.
Wherein the antioxidant is phenyl tri (2, 4-di-tert-butyl) phosphite, triphenyl phosphite or tributyl sulfite.
Wherein the SAN resin is an acrylonitrile-styrene copolymer prepared from acrylonitrile and styrene by a bulk method, a suspension method or an emulsion method.
A method for preparing a composition with good dielectric properties suitable for the electrical field as described above, comprising the steps of:
1) Introducing nitrogen into a high-pressure reactor provided with a stirrer and a condensing device, keeping the temperature at 60 ℃, adding 50-60 parts by weight of butadiene, 20-30 parts by weight of acrylonitrile, 0.1-0.5 part by weight of initiator, 2-5 parts by weight of first emulsifier and 100-150 parts by weight of deionized water into the reactor, uniformly stirring, and polymerizing at 65-80 ℃ for 8-10 hours to obtain latex 1;
2) Adding 5-8 parts by weight of compound A into latex 1 under high-speed stirring, adding the compound A for 30min, and then performing ultrasonic treatment at 30-40 ℃ for 2-3 hours;
3) Dissolving 0.5-0.8 part by weight of a second emulsifier in 30 parts by weight of deionized water to prepare a second emulsifier aqueous solution, adding the second emulsifier aqueous solution into the reaction system of the step 2) within 1-1.5h under the stirring condition of 20r/min, and reacting for 30min at the temperature of 30 ℃ to obtain latex 2;
4) Raising the temperature of the latex 2 to 70 ℃, adding 32-38 parts by weight of styrene monomer, 20-25 parts by weight of acrylonitrile monomer, 80-100 parts by weight of deionized water and 0.2-0.5 part by weight of first initiator, and reacting for 2 hours; filtering, condensing, washing and drying to obtain rubber graft copolymer powder;
5) 80 parts by weight of SAN resin, 1-2 parts by weight of antioxidant and 25-28 parts by weight of rubber graft copolymer are thoroughly mixed to be uniformly dispersed, and melt blending is carried out in a twin-screw extruder at 200-210 ℃ to obtain the composition.
Compared with the prior art, the compound A, the composition and the preparation method thereof have good dielectric properties under different temperature and humidity environments, and the dielectric properties can still be kept at a higher level after corrosion and aging, so that the composition (ABS resin) obtained by the invention can be better applied to the electrical field.
Drawings
FIG. 1 is a graph showing the dielectric properties of comparative example compositions.
Detailed Description
In order that those skilled in the art will better understand the present invention, the present invention will be described in further detail with reference to specific embodiments.
The raw materials used in the embodiments are as follows:
acrylonitrile: zibo Xinrong chemical technology Co., ltd;
styrene: zibo Xinrong chemical technology Co., ltd;
butadiene: chengdu Honghua chemical industry Limited liability company;
and (3) an initiator: potassium persulfate, a source commercially available;
a first emulsifier: sodium dodecyl arylsulfonate and polyethylene glycol at 1:1 weight ratio, and polyethylene glycol is PEG-8000;
and a second emulsifier: rosin soap and polyethylene glycol at 1:1 weight ratio, and polyethylene glycol is PEG-8000;
an antioxidant: phenyl tris (2, 4-di-t-butyl) phosphite;
SAN resin: ningbo table, brand NF2200;
preparation of Compound A:
1) 0.05mol portion of catechol and xylene are added to the vessel, the ratio of catechol to xylene being 1mol:1L, dropwise adding 0.05mol part of phosphorus trichloride and 0.1mol part of triethylamine from two constant pressure funnels simultaneously under stirring uniformly, stirring for 1h at room temperature, refluxing for 2h, filtering to remove off-white solid, washing four times with benzene, pumping out solvent, and collecting fraction at 102 ℃ under reduced pressure distillation to obtain
2) 0.026mol part of (V) is dissolved in benzene to obtain a mixed solution a, and the ratio of (V) to benzene is 1.3mol:1L; dissolving p-chloroaniline and triethylamine in benzene to obtain a mixed solution b, wherein the ratio of the p-chloroaniline to the triethylamine to the benzene is 1.3mol:1.3mol:1L; dropwise adding the mixed solution a into the mixed solution b at 20 ℃ for reaction for 3 hours, filtering triethylamine hydrochloride, filtering out a solvent by pumping to obtain a yellow thick liquid, standing for solidification, and recrystallizing with benzene-hexane to obtain the compound A shown in the formula (II).
The remaining raw materials were commercially available.
Example 1
1) Introducing nitrogen into a high-pressure reactor provided with a stirrer and a condensing device, keeping the temperature at 60 ℃, adding 50 parts by weight of butadiene, 30 parts by weight of acrylonitrile, 0.1 part by weight of initiator, 5 parts by weight of first emulsifier and 150 parts by weight of deionized water into the reactor, uniformly stirring, and polymerizing at 80 ℃ for 8 hours to obtain latex 1;
2) Adding 5 parts by weight of compound A into latex 1 under high-speed stirring, after adding the compound A for 30min, and performing ultrasonic treatment at 30 ℃ for 2-3 hours;
3) Dissolving 0.8 part by weight of a second emulsifier in 30 parts by weight of deionized water to prepare a second emulsifier aqueous solution, adding the second emulsifier aqueous solution into the reaction system of the step 2) within 1.5h under the stirring condition of 20r/min, and reacting for 30min at the temperature of 30 ℃ to prepare latex 2;
4) Raising the temperature of the latex 2 to 70 ℃, adding 38 parts by weight of styrene monomer, 25 parts by weight of acrylonitrile monomer and 80 parts by weight of deionized water, and reacting for 2 hours by using 0.5 part by weight of a first initiator; filtering, condensing, washing and drying to obtain a rubber graft copolymer;
5) 80 parts by weight of SAN resin, 1 part by weight of an antioxidant and 28 parts by weight of a rubber graft copolymer were thoroughly mixed to be uniformly dispersed, and melt-blended in a twin-screw extruder at 200 to 210℃to obtain a composition.
Example 2
1) Introducing nitrogen into a high-pressure reactor provided with a stirrer and a condensing device, keeping the temperature at 60 ℃, adding 60 parts by weight of butadiene, 20 parts by weight of acrylonitrile, 0.5 part by weight of initiator, 2 parts by weight of first emulsifier and 100 parts by weight of deionized water into the reactor, uniformly stirring, and polymerizing at 65 ℃ for 10 hours to obtain latex 1;
2) Adding 8 parts by weight of compound A into latex 1 under high-speed stirring, after adding the compound A for 30min, and performing ultrasonic treatment at 40 ℃ for 2-3 hours;
3) Dissolving 0.5 part by weight of a second emulsifier in 30 parts by weight of deionized water to prepare a second emulsifier aqueous solution, adding the second emulsifier aqueous solution into the reaction system of the step 2) within 1h under the stirring condition of 20r/min, and reacting for 30min at the temperature of 30 ℃ to prepare latex 2;
4) Raising the temperature of the latex 2 to 70 ℃, adding 32 parts by weight of styrene monomer, 20 parts by weight of acrylonitrile monomer, 100 parts by weight of deionized water and 0.2 part by weight of first initiator, and reacting for 2 hours; filtering, condensing, washing and drying to obtain a rubber graft copolymer;
5) 80 parts by weight of SAN resin, 2 parts by weight of an antioxidant and 25 parts by weight of a rubber graft copolymer were thoroughly mixed to be uniformly dispersed, and melt-blended in a twin-screw extruder at 200 to 210℃to obtain a composition.
Example 3
1) Introducing nitrogen into a high-pressure reactor provided with a stirrer and a condensing device, keeping the temperature at 60 ℃, adding 55 parts by weight of butadiene, 25 parts by weight of acrylonitrile, 0.3 part by weight of initiator, 4 parts by weight of first emulsifier and 130 parts by weight of deionized water into the reactor, uniformly stirring, and polymerizing at 70 ℃ for 8-10 hours to obtain latex 1;
2) Adding 7 parts by weight of compound A into latex 1 under high-speed stirring, and after the compound A is added for 30min, carrying out ultrasonic treatment for 2.5 hours at 35 ℃;
3) Dissolving 0.8 part by weight of a second emulsifier in 30 parts by weight of deionized water to prepare a second emulsifier aqueous solution, adding the second emulsifier aqueous solution into the reaction system of the step 2) within 1.5h under the stirring condition of 20r/min, and reacting for 30min at the temperature of 30 ℃ to prepare latex 2;
4) Raising the temperature of the latex 2 to 70 ℃, adding 35 parts by weight of styrene monomer, 23 parts by weight of acrylonitrile monomer, 90 parts by weight of deionized water and 0.4 part by weight of first initiator, and reacting for 2 hours; filtering, condensing, washing and drying to obtain a rubber graft copolymer;
5) 80 parts by weight of SAN resin, 1.5 parts by weight of an antioxidant and 27 parts by weight of a rubber graft copolymer were thoroughly mixed to be uniformly dispersed, and melt-blended in a twin-screw extruder at 200 to 210℃to obtain a composition.
Example 4
1) Introducing nitrogen into a high-pressure reactor provided with a stirrer and a condensing device, keeping the temperature at 60 ℃, adding 55 parts by weight of butadiene, 25 parts by weight of acrylonitrile, 0.3 part by weight of initiator, 4 parts by weight of first emulsifier and 130 parts by weight of deionized water into the reactor, uniformly stirring, and polymerizing at 70 ℃ for 8-10 hours to obtain latex 1;
2) Adding 3 parts by weight of compound A into latex 1 under high-speed stirring, and after the compound A is added for 30min, carrying out ultrasonic treatment for 2.5 hours at 35 ℃;
3) Dissolving 0.8 part by weight of a second emulsifier in 30 parts by weight of deionized water to prepare a second emulsifier aqueous solution, adding the second emulsifier aqueous solution into the reaction system of the step 2) within 1.5h under the stirring condition of 20r/min, and reacting for 30min at the temperature of 30 ℃ to prepare latex 2;
4) Raising the temperature of the latex 2 to 70 ℃, adding 35 parts by weight of styrene monomer, 23 parts by weight of acrylonitrile monomer, 90 parts by weight of deionized water and 0.4 part by weight of first initiator, and reacting for 2 hours; filtering, condensing, washing and drying to obtain a rubber graft copolymer;
5) 80 parts by weight of SAN resin, 1.5 parts by weight of an antioxidant and 27 parts by weight of a rubber graft copolymer were thoroughly mixed to be uniformly dispersed, and melt-blended in a twin-screw extruder at 200 to 210℃to obtain a composition.
Example 5
1) Introducing nitrogen into a high-pressure reactor provided with a stirrer and a condensing device, keeping the temperature at 60 ℃, adding 55 parts by weight of butadiene, 25 parts by weight of acrylonitrile, 0.3 part by weight of initiator, 4 parts by weight of first emulsifier and 130 parts by weight of deionized water into the reactor, uniformly stirring, and polymerizing at 70 ℃ for 8-10 hours to obtain latex 1;
2) Adding 10 parts by weight of compound A into latex 1 under high-speed stirring, after adding the compound A for 30min, and performing ultrasonic treatment at 35 ℃ for 2.5 hours;
3) Dissolving 0.8 part by weight of a second emulsifier in 30 parts by weight of deionized water to prepare a second emulsifier aqueous solution, adding the second emulsifier aqueous solution into the reaction system of the step 2) within 1.5h under the stirring condition of 20r/min, and reacting for 30min at the temperature of 30 ℃ to prepare latex 2;
4) Raising the temperature of the latex 2 to 70 ℃, adding 35 parts by weight of styrene monomer, 23 parts by weight of acrylonitrile monomer, 90 parts by weight of deionized water and 0.4 part by weight of first initiator, and reacting for 2 hours; filtering, condensing, washing and drying to obtain a rubber graft copolymer;
5) 80 parts by weight of SAN resin, 1.5 parts by weight of an antioxidant and 27 parts by weight of a rubber graft copolymer were thoroughly mixed to be uniformly dispersed, and melt-blended in a twin-screw extruder at 200 to 210℃to obtain a composition.
Example 6
1) Introducing nitrogen into a high-pressure reactor provided with a stirrer and a condensing device, keeping the temperature at 60 ℃, adding 55 parts by weight of butadiene, 25 parts by weight of acrylonitrile, 0.3 part by weight of initiator, 4 parts by weight of first emulsifier and 130 parts by weight of deionized water into the reactor, uniformly stirring, and polymerizing at 70 ℃ for 8-10 hours to obtain latex 1;
2) Adding 7 parts by weight of compound A to latex 1 under high-speed stirring for 1 min;
3) Dissolving 0.8 part by weight of a second emulsifier in 30 parts by weight of deionized water to prepare a second emulsifier aqueous solution, adding the second emulsifier aqueous solution into the reaction system of the step 2) within 1.5h under the stirring condition of 20r/min, and reacting for 30min at the temperature of 30 ℃ to prepare latex 2;
4) Raising the temperature of the latex 2 to 70 ℃, adding 35 parts by weight of styrene monomer, 23 parts by weight of acrylonitrile monomer, 90 parts by weight of deionized water and 0.4 part by weight of first initiator, and reacting for 2 hours; filtering, condensing, washing and drying to obtain a rubber graft copolymer;
5) 80 parts by weight of SAN resin, 1.5 parts by weight of an antioxidant and 27 parts by weight of a rubber graft copolymer were thoroughly mixed to be uniformly dispersed, and melt-blended in a twin-screw extruder at 200 to 210℃to obtain a composition.
Comparative example 1
1) Introducing nitrogen into a high-pressure reactor provided with a stirrer and a condensing device, keeping the temperature at 60 ℃, adding 55 parts by weight of butadiene, 25 parts by weight of acrylonitrile, 0.3 part by weight of initiator, 4 parts by weight of first emulsifier and 130 parts by weight of deionized water into the reactor, uniformly stirring, and polymerizing at 70 ℃ for 8-10 hours to obtain latex 1;
2) Dissolving 0.8 part by weight of a second emulsifier in 30 parts by weight of deionized water to prepare a second emulsifier aqueous solution, adding the second emulsifier aqueous solution into the latex 1 within 1.5 hours under the stirring condition of 20r/min, setting the temperature of a reaction system to be 30 ℃, and reacting for 30 minutes to prepare latex 2;
3) Raising the temperature of the latex 2 to 70 ℃, adding 35 parts by weight of styrene monomer, 23 parts by weight of acrylonitrile monomer, 90 parts by weight of deionized water and 0.4 part by weight of first initiator, and reacting for 2 hours; filtering, condensing, washing and drying to obtain a rubber graft copolymer;
4) 80 parts by weight of SAN resin, 1.5 parts by weight of an antioxidant and 27 parts by weight of a rubber graft copolymer were thoroughly mixed to be uniformly dispersed, and melt-blended in a twin-screw extruder at 200 to 210℃to obtain a composition.
The dielectric property test method comprises the following steps:
samples were prepared according to the method of GB1408-89, and the voltage resistance test under environmental condition 1 (temperature 23.+ -. 2, relative temperature 25.+ -. 5%), environmental condition 2 (temperature 45.+ -. 2, relative temperature 50.+ -. 5%) and environmental condition 3 (temperature 60.+ -. 2, relative temperature 70.+ -. 5%) were carried out using different samples, and the electrical strength values P1, P2 and P3, respectively, are shown in Table 1.
The test sample prepared according to the method of GB1408-89 is processed by a salt spray corrosion test box, the test is circularly changed between the temperature of-20 ℃ and 100 ℃, the temperature change speed is 10 ℃/10min, the mist reduction amount is 0.5mL/80cm x h, and the nozzle pressure is 100kPa. An aqueous solution containing 5% sodium chloride and 5% glacial acetic acid was sprayed by a spraying device, and after 10 days, samples were taken for voltage resistance testing, and the different samples were taken for voltage resistance testing under environmental condition 1 (temperature 23.+ -. 2, relative temperature 25.+ -. 5%), environmental condition 2 (temperature 45.+ -. 2, relative temperature 50.+ -. 5%) and environmental condition 3 (temperature 60.+ -. 2, relative temperature 70.+ -. 5%), respectively, and the electrical strength values P4, P5 and P6, respectively, were shown in Table 1.
TABLE 1 dielectric property test results (Electrical Strength: MV/m)
| P1 | P2 | P3 | P4 | P5 | P6 | |
| Example 1 | 60.35 | 54.27 | 43.42 | 48.24 | 43.42 | 36.54 |
| Example 2 | 61.80 | 55.62 | 44.50 | 49.44 | 44.50 | 35.60 |
| Example 3 | 62.52 | 56.25 | 48.64 | 50.00 | 45.00 | 42.35 |
| Example 4 | 55.33 | 44.24 | 35.39 | 44.24 | 35.39 | 28.31 |
| Example 5 | 52.98 | 42.32 | 33.86 | 42.32 | 33.86 | 27.08 |
| Example 6 | 50.01 | 40.08 | 32.06 | 40.08 | 32.06 | 25.65 |
| Comparative example 1 | 38.40 | 26.88 | 21.50 | 30.72 | 21.50 | 17.20 |
The data in Table 1 are shown in FIG. 1, and it can be more intuitively seen that the dielectric properties of examples 1-3 are better under different temperature and humidity conditions, and particularly, the dielectric properties of examples 4-6 and comparative example 1 are significantly better under high temperature and high humidity environments.
After the samples are subjected to the ageing simulation experiments of salt spray corrosion and cold-hot alternation, as can be seen from the values of P4, P5 and P6, the dielectric properties of the samples in examples 1-3 still maintain a good level in different temperature and humidity environments.
Therefore, the composition disclosed by the invention is actually an ABS composition, and the compound A is added in the production process of the latex 2, so that the molecular weight and the distribution state of the latex 2 are regulated, and the dielectric property of the composition can be well improved when the composition is blended and extruded with SAN. The composition can be directly applied to electric products, can be used for further preparing required engineering plastics according to actual needs, and is applied to special fields.
Mechanical property test
The following mechanical tests were carried out on the compositions obtained in examples 1 to 6 and comparative example 1, and the test results are shown in Table 2.
The tensile strength was tested according to GB/T1040-2006, the tensile speed was 5mm/s, and the test temperature was 23 ℃.
The notch impact strength is tested according to GB/T1843-2008 standard; sample size (mm): (80.+ -. 2) × (10.+ -. 0.2) × (4.+ -. 0.2), notch bottom radius (mm) 0.25.+ -. 0.05, notch retention thickness (mm) 8.0.+ -. 0.2, test temperature 23 ℃.
TABLE 2 mechanical test results
| Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Example 6 | Comparative example 1 | |
| Tensile strength MPa | 42.5 | 43.4 | 43.5 | 42.1 | 42.9 | 42.8 | 42.0 |
| Notched impact strength MPa | 6.2 | 6.5 | 6.5 | 6.4 | 6.2 | 6.3 | 6.2 |
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. The ABS with good dielectric property suitable for the electrical field is characterized by being prepared by the following method:
1) Butadiene, acrylonitrile, an initiator, a first emulsifier and deionized water are put into a reaction kettle and polymerized for 8-10 hours at 65-80 ℃ to obtain nitrile latex;
2) Adding a compound A, and then performing ultrasonic treatment for 2-3 hours at the temperature of 30-40 ℃;
compound a has the following structural formula:(I) R1 is hydrogen, cl or C1-C6 alkyl, R2 is substituted anilino;
3) Dissolving a second emulsifier in 30 parts by weight of deionized water to prepare a second emulsifier aqueous solution, and adding the second emulsifier aqueous solution into the reaction system of the step 2) to react for 30 minutes;
4) The reaction temperature is increased to 70 ℃, styrene monomer, acrylonitrile monomer, deionized water and a first initiator are added, after 2 hours of reaction, filtration, condensation, washing and drying are carried out, and the rubber graft copolymer is obtained;
5) SAN resin, antioxidant and rubber graft copolymer are evenly mixed and dispersed, and then are blended and extruded to obtain the composition.
2. ABS with good dielectric properties suitable for use in the electrical field according to claim 1, characterized in that it is prepared by the following method:
1) 50-60 parts by weight of butadiene, 20-30 parts by weight of acrylonitrile, 0.1-0.5 part by weight of initiator, 2-5 parts by weight of first emulsifier and 100-150 parts by weight of deionized water are put into a reaction kettle, and polymerization is carried out for 8-10 hours at 65-80 ℃ to obtain nitrile latex;
2) Adding a compound A, and then performing ultrasonic treatment for 2-3 hours at the temperature of 30-40 ℃;
compound a has the following structural formula: (II)；
3) Dissolving 0.5-0.8 part by weight of a second emulsifier in 30 parts by weight of deionized water to prepare a second emulsifier aqueous solution, and adding the second emulsifier aqueous solution into the reaction system of the step 2) to react for 30min;
4) Raising the reaction temperature to 70 ℃, adding 30-40 parts by weight of styrene monomer, 20-25 parts by weight of acrylonitrile monomer, 80-100 parts by weight of deionized water and 0.2-0.5 part by weight of first initiator, reacting for 2 hours, filtering, condensing, washing and drying to obtain a rubber graft copolymer;
5) 75-85 parts of SAN resin, 1-2 parts of antioxidant and 20-30 parts of rubber graft copolymer are uniformly mixed and dispersed, and then the mixture is extruded by blending to obtain the composition.
3. The ABS of claim 2 having good dielectric properties suitable for use in the electrical field, wherein:
the compound A is prepared by the following method:
1) Adding catechol and xylene into a container, simultaneously dripping phosphorus trichloride and triethylamine from two constant pressure funnels under stirring, refluxing after stirring at room temperature, filtering to remove off-white solid, washing four times with benzene, pumping out solvent, and collecting 102 ℃ fraction by reduced pressure distillation to obtain
(V)；
2) Dissolving a compound shown in a formula (V) in benzene to obtain a benzene solution containing the formula (V), dropwise adding the benzene solution containing the formula (V) into a mixed solution consisting of parachloroaniline, triethylamine and benzene, reacting for 3 hours, filtering the generated triethylamine hydrochloride, removing a solvent by suction filtration to obtain a yellow thick liquid, standing for solidification, and recrystallizing with benzene-hexane to obtain the compound A shown in the formula (II).
4. The ABS of claim 1 having good dielectric properties suitable for use in the electrical arts, wherein:
the initiator is selected from potassium persulfate or cumene hydroperoxide.
5. The ABS of claim 1 having good dielectric properties suitable for use in the electrical arts, wherein:
the first emulsifier is selected from one or more of sodium dodecyl sulfate, nekal, rosin soap, sodium alkyl sulfonate, sodium alkylaryl sulfonate and polyethylene glycol.
6. The ABS of claim 1 having good dielectric properties suitable for use in the electrical arts, wherein:
the second emulsifier is rosin soap or/and polyethylene glycol.
7. The ABS of claim 1 having good dielectric properties suitable for use in the electrical arts, wherein:
the antioxidant is phenyl tri (2, 4-di-tert-butyl) phosphite, triphenyl phosphite or tributyl sulfite.
8. A method for preparing ABS with good dielectric properties suitable for use in electrical field according to any one of claims 1-6, characterized by comprising the following steps:
1) Introducing nitrogen into a high-pressure reactor provided with a stirrer and a condensing device, keeping the temperature at 60 ℃, adding 50-60 parts by weight of butadiene, 20-30 parts by weight of acrylonitrile, 0.1-0.5 part by weight of initiator, 2-5 parts by weight of first emulsifier and 100-150 parts by weight of deionized water into the reactor, uniformly stirring, and polymerizing at 65-80 ℃ for 8-10 hours to obtain latex 1;
2) Adding 5-8 parts by weight of compound A into latex 1 under high-speed stirring, adding the compound A for 30min, and then performing ultrasonic treatment for 2-3 hours at 30-40 ℃;
3) Dissolving 0.5-0.8 part by weight of a second emulsifier in 30 parts by weight of deionized water to prepare a second emulsifier aqueous solution, adding the second emulsifier aqueous solution into the reaction system of the step 2) within 1-1.5h under the stirring condition of 20r/min, and reacting for 30min at the temperature of 30 ℃ to obtain latex 2;
4) Raising the temperature of the latex 2 to 70 ℃, adding 32-38 parts by weight of styrene monomer, 20-25 parts by weight of acrylonitrile monomer, 80-100 parts by weight of deionized water and 0.2-0.5 part by weight of first initiator, and reacting for 2 hours; filtering, condensing, washing and drying to obtain rubber graft copolymer powder;
5) 80 parts by weight of SAN resin, 1-2 parts by weight of antioxidant and 25-28 parts by weight of rubber graft copolymer are thoroughly mixed to be uniformly dispersed, and melt blending is carried out in a twin-screw extruder at 200-210 ℃ to obtain the composition.
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