CN114805691A - CF (compact flash) 3 Preparation method of (E) -PPFPA (polypropylene-propylene-polystyrene) microsphere composite polystyrene material - Google Patents

CF (compact flash) 3 Preparation method of (E) -PPFPA (polypropylene-propylene-polystyrene) microsphere composite polystyrene material Download PDF

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CN114805691A
CN114805691A CN202210372467.3A CN202210372467A CN114805691A CN 114805691 A CN114805691 A CN 114805691A CN 202210372467 A CN202210372467 A CN 202210372467A CN 114805691 A CN114805691 A CN 114805691A
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ppfpa
microsphere
parts
polystyrene
trifluoromethyl benzoyl
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桑仁杰
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Hefei Zuoxin Technology Co ltd
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    • 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
    • C08F257/00—Macromolecular compounds obtained by polymerising monomers on to polymers of aromatic monomers as defined in group C08F12/00
    • C08F257/02—Macromolecular compounds obtained by polymerising monomers on to polymers of aromatic monomers as defined in group C08F12/00 on to polymers of styrene or alkyl-substituted styrenes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
    • B01J13/02—Making microcapsules or microballoons
    • 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
    • C08F212/00—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
    • C08F212/02—Monomers containing only one unsaturated aliphatic radical
    • C08F212/04—Monomers containing only one unsaturated aliphatic radical containing one ring
    • C08F212/06—Hydrocarbons
    • C08F212/08—Styrene
    • 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
    • C08F8/00—Chemical modification by after-treatment
    • C08F8/18—Introducing halogen atoms or halogen-containing groups
    • C08F8/24—Haloalkylation

Abstract

The invention relates to the technical field of low-dielectric PS material synthesis, and discloses CF 3 The preparation method of the-PPFPA-PS microsphere composite polystyrene material comprises the following steps: carrying out primary substitution reaction on an acyl chloride functional group of 4-trifluoromethyl benzoyl chloride and a methylene functional group of acetylacetone to obtain beta-diketonized trifluoromethyl benzoyl; by chloromethylating polyacrylic acid pentafluorophenol ester-polystyrene microsphere (PPFPA-PS microsphere-CH) 2 Cl) ofThe methyl functional group and the methylene functional group of beta-diketo trifluoromethyl benzoyl have secondary substitution reaction to obtain the polyacrylic acid pentafluorophenol ester-polystyrene microsphere (CF) with the surface coated with trifluoromethyl group 3 -PPFPA-PS microspheres); with CF 3 the-PPFPA-PS microspheres are used as fillers, polystyrene is used as a polymer matrix, and the CF with low dielectric constant is prepared 3 -PPFPA-PS microsphere composite polystyrene material.

Description

CF (compact flash) 3 Preparation method of (E) -PPFPA (polypropylene-propylene-polystyrene) microsphere composite polystyrene material
Technical Field
The invention relates to the technical field of low-dielectric PS material synthesis, in particular to CF 3 A preparation method of a-PPFPA-PS microsphere composite polystyrene material.
Background
Polystyrene (PS) is an important engineering plastic, which has high mechanical strength, excellent thermal stability, dimensional stability and moisture resistance. The dielectric loss of PS is low, but the dielectric constant of pure PS material is about 2.8 (at 100 Hz), which can not meet the requirement of rapidly developing electronic packaging field for low dielectric constant material.
The method is an effective method for realizing low dielectric constant by utilizing the characteristics of large C-F bond energy and low polarizability. The trifluoromethyl group has larger volume, can increase the free volume of the polymer, reduce the molecular polarizability and further reduce the dielectric constant of the material;
POSS has the characteristics of unique cage structure, low density, symmetry and low polarizability, and simultaneously has higher thermal stability, thus being an ideal raw material for preparing low dielectric materials.
The present invention attempts to synthesize a low dielectric constant CF 3 -PPFPA-PS microsphere composite polystyrene material.
Disclosure of Invention
Technical problem to be solved
Aiming at the problem that the high dielectric constant of a pure PS material cannot meet the requirement of the rapidly developed electronic packaging field on a low dielectric constant material, the invention provides a synthetic low dielectric constant CF 3 A method for compounding a PPFPA-PS microsphere with a polystyrene material.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme:
CF (compact flash) 3 The preparation method of the-PPFPA-PS microsphere composite polystyrene material comprises the following steps:
step S1, synthesizing chloromethylated polyacrylic acid pentafluorophenol ester-polystyrene microsphere (PPFPA-PS microsphere-CH) 2 Cl) synthesis:
adding polyvinylpyrrolidone and ethanol into a three-necked bottle, arranging a reflux condenser tube, a mechanical stirrer and a thermometer in the reaction bottle, sequentially adding 67-82 parts of styrene monomer, 14-21 parts of 4-chloromethylstyrene, 2-10 parts of allylpentafluorobenzene and divinylbenzene into the three-necked bottle, heating to 65-90 ℃, and stirring the whole system under the protection of nitrogen for reaction for 10-14h to obtain the PPFPA-PS microsphere-CH 2 Cl；
Step S2, synthesis of β -diketonated trifluoromethyl benzoyl:
adding nano potassium carbonate, absolute ethyl alcohol, 2-10 parts of 4-trifluoromethyl benzoyl chloride and 1-5 parts of acetylacetone into a four-neck flask provided with a reflux condenser tube and a drying tube, and heating and reacting under mechanical stirring to obtain beta-diketonated trifluoromethyl benzoyl;
step S3, polyacrylic acid pentafluorophenol ester-polystyrene microsphere (CF) with trifluoromethyl group coated on surface 3 -PPFPA-PS microspheres):
2-12 parts of PPFPA-PS microsphere-CH 2 Adding Cl and 2-10 parts of beta-diketonated trifluoromethyl benzoyl into DMF (dimethyl formamide), adding nano potassium carbonate under stirring, vacuumizing the system, filling nitrogen, heating to 50-75 ℃, and reacting under stirring for 10-15 hours under a reflux state to obtain CF (carbon fluoride) 3 -PPFPA-PS microspheres;
step S4, CF 3 -synthesis of PPFPA-PS microsphere composite polystyrene material:
taking 8-120 parts of CF 3 dispersing-PPFPA-PS microspheres and 500 parts of styrene monomer in a toluene solution, carrying out ultrasonic treatment in an ice bath, transferring the mixed solution to a three-neck flask, adding 5-20 parts of azoisobutyronitrile AIBN, vacuumizing the whole system, filling nitrogen, and reacting at 70-95 ℃ for 4-8 hours to obtain CF 3 -PPFPA-PS microsphere composite polystyrene material.
Preferably, the step S2: the dosage of the nano potassium carbonate is 1-8 parts, and the average particle size is 100 nm.
Preferably, the step S2: heating to 50-80 ℃ under mechanical stirring to react for 5-10h to obtain the beta-diketonated trifluoromethyl benzoyl.
Preferably, the amount of the nano potassium carbonate used in the step S3 is 2-10 parts, and the average particle size is 100 nm.
(III) advantageous technical effects
Compared with the prior art, the invention has the following beneficial technical effects:
the invention comprises the following steps: synthesis of Chloromethylated PolyAcryloxypentafluorophenol ester-polystyrene microsphere (PPFPA-PS microsphere-CH) 2 Cl)；
Carrying out primary substitution reaction on an acyl chloride functional group of 4-trifluoromethyl benzoyl chloride and a methylene functional group of acetylacetone to obtain beta-diketonized trifluoromethyl benzoyl;
by chloromethylating polyacrylic acid pentafluorophenol ester-polystyrene microsphere (PPFPA-PS microsphere-CH) 2 Cl) and methylene functional group of beta-diketonized trifluoromethyl benzoyl to obtain polyacrylic acid pentafluorophenol ester-polystyrene microsphere (CF) with trifluoromethyl group coated on surface 3 -PPFPA-PS microspheres);
with CF 3 the-PPFPA-PS microspheres are used as fillers, the polystyrene is used as a polymer matrix, and the CF is prepared 3 -PPFPA-PS microsphere composite polystyrene material with relative dielectric constant epsilon at 100Hz r Reduced to 2.34-2.50, and the dielectric loss tan delta is only 0.0052-0.0057;
wherein, the trifluoromethyl group has larger volume, can increase the free volume of polystyrene and reduce CF 3 The polarizability of the-PPFPA-PS microsphere composite polystyrene material is reduced, so that the dielectric constant of polystyrene is reduced.
Detailed Description
Example 1:
CF (compact flash) 3 The preparation method of the-PPFPA-PS microsphere composite polystyrene material comprises the following steps:
step S1, synthesizing chloromethylated polyacrylic acid pentafluorophenol ester-polystyrene microsphere (PPFPA-PS microsphere-CH) 2 Cl):
at room temperature, 2g of polyvinylpyrrolidone and 150mL of ethanol are added into a three-necked bottle, the reaction bottle is provided with a reflux condenser tube, a mechanical stirrer and a thermometer, 7.3g of styrene monomer, 2g of 4-chloromethyl styrene, 0.5g of allyl pentafluorobenzene and 0.2g of divinylbenzene are sequentially added into the three-necked bottle, the whole system is vacuumized and filled with nitrogen, the temperature is rapidly raised to 80 ℃, the whole system is stirred and reacted for 12 hours under the protection of nitrogen, after the reaction is finished, products are centrifugally collected, washed by ethanol and dried under vacuum at 40 ℃ to obtain the PPFPA-PS microsphere-CH 2 Cl；
Step S2, synthesis of β -diketonated trifluoromethyl benzoyl:
adding 4g of potassium carbonate with the average particle size of 100nm, 200mL of absolute ethyl alcohol, 594-trifluoromethylbenzoyl chloride and 2.5g of acetylacetone into a four-neck flask provided with a reflux condenser tube and a drying tube, heating to 60 ℃ under mechanical stirring for reacting for 8 hours, pouring the reaction liquid into distilled water, adding sodium chloride, stirring, extracting with dichloromethane, separating, drying with anhydrous sodium sulfate, stir-frying a silica gel sample, and performing column chromatography separation (eluent: petroleum ether/diethyl ether: 3/1) to obtain beta-diketonated trifluoromethyl benzoyl;
step S3, polyacrylic acid pentafluorophenol ester-polystyrene microsphere (CF) with trifluoromethyl group coated on surface 3 -PPFPA-PS microspheres):
mixing 9g of PPFPA-PS microsphere-CH 2 Adding Cl and 6g of beta-diketonated trifluoromethyl benzoyl into 50ml DMF, adding 8g of potassium carbonate with the average particle size of 100nm while stirring, vacuumizing the system, charging nitrogen, heating to 60 ℃, stirring and reacting for 12 hours under the reflux state, pouring the reaction liquid into distilled water, adding sodium chloride, stirring, extracting with dichloromethane, separating, drying with anhydrous sodium sulfate, stir-frying with silica gel, separating by column chromatography (eluent: petroleum ether/diethyl ether: 3/1), distilling to obtain CF 3 -PPFPA-PS microspheres;
step S4, CF 3 -synthesis of PPFPA-PS microsphere composite polystyrene material:
take 4gCF 3 -PPFPA-PS microspheres and 50g styrene monomer are dispersed in 100mL toluene solution, ultrasonic treatment is carried out for 0.5h in ice bath, the mixed solution is transferred to a three-neck flask, 2g azo-iso-butyronitrile AIBN is added, the whole system is vacuumized and filled with nitrogen, the reaction is carried out for 6h at 80 ℃, after the reaction is finished, centrifugation is carried out, the mixed solution is washed by toluene, vacuum drying is carried out for 12h at 80 ℃, the obtained product is placed in a mold, compression molding is carried out on the product by utilizing a flat vulcanizing machine, the processing temperature is 175 ℃, the pressure is 10M Pa, after hot pressing is carried out for 2h, the mold is transferred to a cold press, cooling molding is carried out on the product, and after the mold is completely cooled, demolding treatment is carried out on the sample, so that CF is obtained 3 -PPFPA-PS microsphere composite polystyrene material.
Example 2:
CF (compact flash) 3 -PPFPA-PS microsphere composite polystyrene materialThe preparation method comprises the following steps:
step S1, synthesizing chloromethylated polyacrylic acid pentafluorophenol ester-polystyrene microsphere (PPFPA-PS microsphere-CH) 2 Cl) synthesis:
at room temperature, 2g of polyvinylpyrrolidone and 150mL of ethanol are added into a three-necked bottle, the reaction bottle is provided with a reflux condenser tube, a mechanical stirrer and a thermometer, 8.2g of styrene monomer, 1.4g of 4-chloromethyl styrene, 0.2g of allyl pentafluorobenzene and 0.2g of divinylbenzene are sequentially added into the three-necked bottle, the whole system is vacuumized and filled with nitrogen, the temperature is rapidly raised to 65 ℃, the whole system is stirred and reacted for 14 hours under the protection of nitrogen, after the reaction is finished, products are centrifugally collected, washed by ethanol and dried under vacuum at 40 ℃ to obtain the PPFPA-PS microsphere-CH 2 Cl；
Step S2, synthesis of β -diketonated trifluoromethyl benzoyl:
adding 1g of potassium carbonate with the average particle size of 100nm, 200mL of absolute ethyl alcohol, 20g of 4-trifluoromethyl benzoyl chloride and 1g of acetylacetone into a four-neck flask provided with a reflux condenser and a drying tube, heating to 50 ℃ under mechanical stirring for reaction for 10 hours, pouring the reaction liquid into distilled water, adding sodium chloride, stirring, extracting with dichloromethane, separating, drying with anhydrous sodium sulfate, stir-frying a sample with silica gel, and separating by column chromatography (eluent: petroleum ether/diethyl ether 3/1) to obtain beta-diketonated trifluoromethyl benzoyl;
step S3, polyacrylic acid pentafluorophenol ester-polystyrene microsphere (CF) with trifluoromethyl group coated on surface 3 -PPFPA-PS microspheres):
mixing 12g of PPFPA-PS microsphere-CH 2 Adding Cl and 10g of beta-diketonated trifluoromethyl benzoyl into 50ml DMF, adding 10g of potassium carbonate with the average particle size of 100nm while stirring, vacuumizing the system, charging nitrogen, heating to 50 ℃, stirring and reacting for 15h under the reflux state, pouring the reaction liquid into distilled water, adding sodium chloride, stirring, extracting with dichloromethane, separating, drying with anhydrous sodium sulfate, stir-frying with silica gel, separating by column chromatography (eluent: petroleum ether/diethyl ether: 3/1), distilling to obtain CF 3 -PPFPA-PS microspheres;
step S4, CF 3 -PPFPA-PS microsphere composite polyphenylSynthesis of ethylene material:
take 12gCF 3 -PPFPA-PS microspheres and 50g styrene monomer are dispersed in 100mL toluene solution, ultrasonic treatment is carried out for 0.5h in ice bath, the mixed solution is transferred to a three-neck flask, 5g azo-iso-butyronitrile AIBN is added, the whole system is vacuumized and filled with nitrogen, reaction is carried out for 8h at 70 ℃, after the reaction is finished, centrifugation is carried out, the mixed solution is washed by toluene, vacuum drying is carried out for 12h at 80 ℃, the mixed solution is placed in a mold, compression molding is carried out on the mold by utilizing a flat vulcanizing machine, the processing temperature is 175 ℃, the pressure is 10MPa, after hot pressing is carried out for 2h, the mold is transferred to a cold press, cooling molding is carried out on the mold, and after the mold is completely cooled, demolding treatment is carried out on a sample, thus obtaining CF 3 -PPFPA-PS microsphere composite polystyrene material.
Example 3:
CF (compact flash) 3 The preparation method of the-PPFPA-PS microsphere composite polystyrene material comprises the following steps:
step S1, synthesizing chloromethylated polyacrylic acid pentafluorophenol ester-polystyrene microsphere (PPFPA-PS microsphere-CH) 2 Cl) synthesis:
at room temperature, 2g of polyvinylpyrrolidone and 150mL of ethanol are added into a three-necked bottle, the reaction bottle is provided with a reflux condenser tube, a mechanical stirrer and a thermometer, 6.7g of styrene monomer, 2.1g of 4-chloromethyl styrene, 1g of allyl pentafluorobenzene and 0.2g of divinylbenzene are sequentially added into the three-necked bottle, the whole system is vacuumized and filled with nitrogen, the temperature is rapidly raised to 90 ℃, the whole system is stirred and reacted for 10 hours under the protection of nitrogen, after the reaction is finished, products are centrifugally collected, washed by ethanol and dried under vacuum at 40 ℃ to obtain the PPFPA-PS microsphere-CH 2 Cl；
Step S2, synthesis of β -diketonated trifluoromethyl benzoyl:
adding 8g of potassium carbonate with the average particle size of 100nm, 200mL of absolute ethyl alcohol, 10g of 4-trifluoromethyl benzoyl chloride and 5g of acetylacetone into a four-neck flask provided with a reflux condenser tube and a drying tube, heating to 80 ℃ under mechanical stirring for reaction for 5 hours, pouring the reaction liquid into distilled water, adding sodium chloride, stirring, extracting with dichloromethane, separating, drying with anhydrous sodium sulfate, stir-frying a sample with silica gel, and separating by column chromatography (eluent: petroleum ether/diethyl ether 3/1) to obtain beta-diketonated trifluoromethyl benzoyl;
step S3, polyacrylic acid pentafluorophenol ester-polystyrene microsphere (CF) with trifluoromethyl group coated on surface 3 -PPFPA-PS microspheres):
2g of PPFPA-PS microsphere-CH 2 Adding Cl and 2g of beta-diketonated trifluoromethyl benzoyl into 50ml DMF, adding 2g of potassium carbonate with the average particle size of 100nm while stirring, vacuumizing the system, filling nitrogen, heating to 75 ℃, stirring and reacting for 10 hours under the reflux state, pouring the reaction liquid into distilled water, adding sodium chloride, stirring, extracting with dichloromethane, separating, drying with anhydrous sodium sulfate, stir-frying with silica gel, separating by column chromatography (eluent: petroleum ether/diethyl ether: 3/1), and distilling to obtain CF 3 -PPFPA-PS microspheres;
step S4, CF 3 -synthesis of PPFPA-PS microsphere composite polystyrene material:
take 0.8gCF 3 -PPFPA-PS microspheres and 50g styrene monomer are dispersed in 100mL toluene solution, ultrasonic treatment is carried out for 0.5h in ice bath, the mixed solution is transferred to a three-neck flask, 0.5g of azodiisobutyronitrile AIBN is added, the whole system is vacuumized and filled with nitrogen, the reaction is carried out for 4h at 95 ℃, after the reaction is finished, centrifugation is carried out, the mixed solution is washed by toluene, vacuum drying is carried out for 12h at 80 ℃, the obtained product is placed in a mold, compression molding is carried out on the product by a flat vulcanizing machine, the processing temperature is 175 ℃, the pressure is 10MPa, after hot pressing is carried out for 2h, the mold is transferred to a cold press, cooling molding is carried out on the product, and after the mold is completely cooled, demolding treatment is carried out on the sample, so that CF is obtained 3 -PPFPA-PS microsphere composite polystyrene material.
Comparative example:
a preparation method of a trifluoromethyl benzoyl chloride composite polystyrene material comprises the following steps:
dispersing 4g of 4-trifluoromethyl benzoyl chloride and 50g of styrene monomer in 100mL of toluene solution, carrying out ultrasonic treatment for 0.5h in an ice bath, transferring the mixed solution into a three-neck flask, adding 2g of azoisobutyronitrile AIBN, vacuumizing the whole system, filling nitrogen, reacting for 6h at 80 ℃, centrifuging, washing with toluene, carrying out vacuum drying for 12h at 80 ℃, placing the obtained product into a mold, carrying out compression molding on the product by using a flat vulcanizing machine at the processing temperature of 175 ℃ and the pressure of 10MPa, carrying out hot pressing for 2h, transferring the mold into a cold press, carrying out cooling molding on the product, and carrying out demolding treatment on the product after the mold is completely cooled to obtain the 4-trifluoromethyl benzoyl chloride composite polystyrene material.
And (3) performance measurement:
according to GB/T12636-1990, coating silver paste with the diameter of 8mm and the thickness of 1-2 microns on the front side and the back side of the composite material, placing a sample in a probe, ensuring that the probe can be completely tested in an electrode range by taking 1V voltage as a standard and the frequency of 100Hz, and obtaining the dielectric constant and the dielectric loss of the composite material, wherein the test result is shown in the following table 1;
TABLE 1
Sample (I) Relative dielectric constant ε r Dielectric loss tan delta
Example 1 2.34 0.0052
Example 2 2.50 0.0057
Example 3 2.46 0.0050
Comparative example 2.78 0.0081

Claims (4)

1. CF (compact flash) 3 The preparation method of the-PPFPA-PS microsphere composite polystyrene material is characterized by comprising the following steps:
step S1, synthesizing chloromethylated polyacrylic acid pentafluorophenol ester-polystyrene microsphere (PPFPA-PS microsphere-CH) 2 Cl):
adding polyvinylpyrrolidone and ethanol into a three-necked bottle, arranging a reflux condenser tube, a mechanical stirrer and a thermometer in the reaction bottle, sequentially adding 67-82 parts of styrene monomer, 14-21 parts of 4-chloromethylstyrene, 2-10 parts of allylpentafluorobenzene and divinylbenzene into the three-necked bottle, heating to 65-90 ℃, and stirring the whole system under the protection of nitrogen for reaction for 10-14h to obtain the PPFPA-PS microsphere-CH 2 Cl；
Step S2, synthesis of β -diketonated trifluoromethyl benzoyl:
adding nano potassium carbonate, absolute ethyl alcohol, 2-10 parts of 4-trifluoromethyl benzoyl chloride and 1-5 parts of acetylacetone into a four-neck flask provided with a reflux condenser tube and a drying tube, and heating and reacting under mechanical stirring to obtain beta-diketonated trifluoromethyl benzoyl;
step S3, polyacrylic acid pentafluorophenol ester-polystyrene microsphere (CF) with trifluoromethyl group coated on surface 3 -PPFPA-PS microspheres):
2-12 parts of PPFPA-PS microsphere-CH 2 Adding Cl and 2-10 parts of beta-diketonated trifluoromethyl benzoyl into DMF (dimethyl formamide), adding nano potassium carbonate under stirring, vacuumizing the system, filling nitrogen, heating to 50-75 ℃, and reacting under stirring for 10-15 hours under a reflux state to obtain CF (carbon fluoride) 3 -PPFPA-PS microspheres;
step S4, CF 3 -synthesis of PPFPA-PS microsphere composite polystyrene material:
taking 8-120 parts of CF 3 dispersing-PPFPA-PS microspheres and 500 parts of styrene monomer in a toluene solution, carrying out ultrasonic treatment in an ice bath, and transferring the mixed solution to a three-port furnaceAdding 5-20 parts of azodiisobutyronitrile AIBN into a bottle, vacuumizing the whole system, filling nitrogen, and reacting at 70-95 ℃ for 4-8h to obtain CF 3 -PPFPA-PS microsphere composite polystyrene material.
2. The CF of claim 1 3 The preparation method of the PPFPA-PS microsphere composite polystyrene material is characterized in that the step S2: the dosage of the nano potassium carbonate is 1-8 parts, and the average particle size is 100 nm.
3. The CF of claim 1 3 The preparation method of the PPFPA-PS microsphere composite polystyrene material is characterized in that the step S2: heating to 50-80 ℃ under mechanical stirring to react for 5-10h to obtain the beta-diketonated trifluoromethyl benzoyl.
4. The CF of claim 1 3 The preparation method of the PPFPA-PS microsphere composite polystyrene material is characterized in that the step S3: the dosage of the nano potassium carbonate is 2-10 parts, and the average particle size is 100 nm.
CN202210372467.3A 2022-04-11 2022-04-11 CF (compact flash) 3 Preparation method of (E) -PPFPA (polypropylene-propylene-polystyrene) microsphere composite polystyrene material Withdrawn CN114805691A (en)

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