CN104744698B - Method for synthesizing linear high molecular weight polyphenylene sulfide - Google Patents
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Abstract
The invention discloses a method for synthesizing linear high molecular weight polyphenylene sulfide and belongs to the technical field of chemical material. The method comprises the following steps: by taking sodium sulphide and dichloro diphenyl as raw materials, synthesizing the linear high molecular weight polyphenylene sulfide (PPP) resin through a solution polycondensation method and a secondary polymerization process in a compound solvent and a cosolvent system. The method is simple in process and convenient to operate; the product has a high molecular weight linear structure; in the whole polymerization process, the molecular weight is controllable. Compared with the prior art, the method has the advantages of good solvent system dissolving property, low salt content and easy separation. The monomer reactivity of the linear polymerization reaction is high and the chain extension is easy to process. The dosage of the alkali metal or the alkaline earth chloride is few and the metal ion can be easily washed. The linear high molecular weight polyphenylene sulfide does not have irritant or carcinogenic property and is environmentally friendly to operate.
Description
Technical field
The invention belongs to chemical material technical field, and in particular to a kind of with vulcanized sodium and paracide as raw material, in alkali
Under liquid, double solvents and adjuvant system, using solution polycondensation and after polymerization technique synthesizing linear high molecular weight polybenzimidazole sulphur
Ether（PPS）Resin methods.
Background technology
Polyphenylene sulfide（PPS）It is a kind of special engineering plastics of excellent combination property, with excellent high temperature resistant, corrosion resistant
Erosion, radiation hardness, fire-retardant, physical and mechanical properties and fabulous dimensional stability and the features such as excellent electrical property, quilt in a balanced way
Structural macromolecular material is widely used as, by filling, modified can be used as special engineering plastics.Meanwhile, may also be fabricated which various
Functional film, coating and composite, succeed application in fields such as electronic apparatus, Aero-Space, Automobile Transportations.
At present, polyphenylene sulfide is synthesized（PPS）Method it is a lot, such as halogen thiophenol salt from polycondensation, to halogen hexichol and sulphur
The electrophilic reaction of melt polymerization, sulphur and benzene, alkali metal sulphide and the solution polycondensation to two halobenzenes（Sodium sulfide method）, sulphur
With the solution polycondensation of paracide（Sulfur solution route）, polymerization of the diphenyl disulfide under lewis acid effect etc..Use at present
In industrial predominantly sodium sulfide method and sulfur solution route.
Sodium sulfide method is that polyphenylene sulfide is obtained by condensation reaction in polar solvent with paracide and anhydrous sodium sulfide.
Conventional polar solvent mainly has 1-METHYLPYRROLIDONE, pyridine, HMPA etc., in industrial production-as use N-
Methyl pyrrolidone and HMPA etc..The method advantage is that raw material is easy to get, and good product quality, high income has the disadvantage work
Skill long flow path, feed purification difficulty is big, contains micro sodium ion in polyphenylene sulfide, and product have straight chain type, half cross-linking type and
Cross-linking type, moisture-proof, electrical resistance and mouldability be not good.
Sulfur solution route is in the range of 175~250 DEG C, with HMPA or 1-METHYLPYRROLIDONE as molten
There is polycondensation reaction generation polyphenylene sulfide in agent, paracide and sulphur, reaction yield is more than 85% at ambient pressure.The method is easy
Accurate feed proportioning, product quality is preferable, but technical difficulty is larger, and sulphur is not easily purified in industrial production, and the abraum salt amount of by-product is big,
It is difficult industrialization.
Patent CN104045828A is reported and gathered in interior with aqueous vulcanized sodium, paracide, phase solvent, solvent, auxiliary agent
The factory formula and method of diphenyl sulfide.CN102329426A is disclosed with vulcanized sodium and paracide as raw material, in N- methyl -2-
Under pyrrolidinone solvent, the technique that low halogen polyphenylene sulfide is synthesized by polycondensation reaction in autoclave.Patent
CN101717510A is disclosed and is mixed wateriness sodium sulfide, lithium chloride and solvent N-methyl pyrilidone, is dehydrated through azeotropic distillation
Polyphenylene sulfide is obtained with paracide reaction afterwards, by filtering flash distillation two-period form recycling design, xylene solution cooling knot
Crystalline substance reclaims the production technology of lithium chloride.Also patent CN1539863A refer to be reacted in screw using sulphur and p-dichlorobenzene
There is the polyphenylene sulfide that melt polycondensation reaction is obtained HMW in device, separated without solvent, and production cost and energy consumption are big
It is big to reduce.
The content of the invention
It is an object of the invention to provide one kind with vulcanized sodium and p-dichlorobenzene as raw material, in alkali lye, double solvents and help
Under agent system, through pre-polymerization, polycondensation, linear condensation synthesizing linear macromolecular weight poly benzene thioether resin method.The method is excessively program control
System stabilization, operating environment is good, and carrying out secondary hardening again after especially the polymerizate after polycondensation reaction is purified through desalination gathers
Reaction is closed, the second lift of polyphenylene sulfide polymer molecular weight is realized.
Technical scheme is as follows：With vulcanized sodium and paracide as raw material, in alkali lye, double solvents and auxiliary agent
Under system, using the method for solution polycondensation synthesizing linear macromolecular weight poly benzene thioether resin.
The present invention is the method for synthesizing linear macromolecular weight poly benzene thioether resin, it is characterised in that entered as steps described below
OK：
（1）Vulcanization is sequentially added in the autoclave equipped with mechanical agitation, cooling water, charge door and gas vent
Sodium, paracide, alkali lye, solvent and auxiliary agent, under nitrogen protection electrified regulation heat up, in carrying out pre-polymerization at 160~200 DEG C
1~4h of reaction, when temperature rises to 220 DEG C, stops heating, makes reactor temperature continue to rise using reaction heat, while opening
Cooling water is opened to adjust and control reactor temperature, in 240~280 DEG C of temperature, under the conditions of 1~1.5MPa of pressure, is carried out
1~3h of polycondensation reaction.
（2）Through supercooling, filtering, filter cake is washed reaction slurry through pickling, deionized water, will after reactor cooling, pressure release
The polyphenylene sulfide condensate and vulcanized sodium that obtain, paracide, solvent, auxiliary agent are added sequentially in above-mentioned autoclave,
Under nitrogen protection, in 260~300 DEG C, under the conditions of 1~1.5MPa of pressure, carry out linear condensation and react 1~3h, question response kettle drop
Temperature, after pressure release reaction slurry through supercooling, filtering, filter cake through pickling, deionized water washing, then dry polyphenylene sulfide
（PPS）Resin.Melt viscosity up to more than 500Pas, product weight yield up to more than 96%, weight average molecular weight after measured（Mw）
It is 55000~60000, molecular weight distributing index is up to 2~3.
Wherein step（1）Middle vulcanized sodium is vulcanized sodium or anhydrous sodium sulfide containing the crystallization water.Wherein vulcanized sodium:To dichloro
Benzene mole ratio is（1.02~1.05）:1, step（2）Middle vulcanized sodium:Paracide mol ratio is 1:1.
Wherein step（1）Middle alkali lye is the one kind in NaOH, calcium hydroxide, potassium hydroxide, sodium carbonate, sodium acid carbonate
Or it is several；Wherein alkali lye:Paracide mol ratio is（1~1.3）:1.
Wherein step（1）With（2）Middle solvent is composite solvent system, i.e. 1-METHYLPYRROLIDONE, N, N- dimethylacetamides
Any two kinds in amine, pyridine, HMPA, 1,3- dimethyl-2-imidazolinones or N-methylmorpholine；Wherein step
（1）Middle solvent:Paracide mol ratio is（5~10）:1, step（2）Middle solvent:Paracide mol ratio is（3~6）:1.
Wherein step（1）With（2）Middle auxiliary agent is the chloride of alkali metal or alkaline-earth metal, i.e. lithium chloride, calcium chloride, chlorination
The mixture of one or more in aluminium, potassium chloride, sodium chloride, magnesium chloride；Wherein step（1）Auxiliary agent:Paracide mol ratio
For（0.005~0.01）:1, wherein step（2）Auxiliary agent:Paracide mol ratio is（0.001~0.004）:1.
Wherein step（1）In the prepolymerization reaction temperature that carries out be 160~200 DEG C, 1~4h of reaction time；Wherein temperature is excellent
Elect 170~185 DEG C as, the time is preferably 2~3h.
Wherein step（1）In the polycondensation reaction temperature that carries out be 240~280 DEG C, 1~1.5MPa of pressure, the reaction time 1~
3h；Wherein temperature is preferably 250~260 DEG C, 1.2~1.3MPa of pressure, 1.5~2h of time.
Wherein step（2）In the linear condensation reaction temperature that carries out be 260~300 DEG C, 1~1.5MPa of pressure, during reaction
Between 1~3h；Wherein temperature is preferably 265~280 DEG C, 1.2~1.3MPa of pressure, 1.5~2h of time.
Wherein step（2）Middle chilling temperature is 100~120 DEG C, and pickling is washed 1~3 time, and deionized water is washed 1~3 time,
Acid wherein used is one or two of hydrochloric acid or sulfuric acid.
A kind of reinforcing polymerization work of the solution polymerization process synthesis polyphenylene sulfide being simple and convenient to operate the invention provides process
Process, product has the linear structure of higher molecular weight, and whole polymerization process, and molecular weight is controllable, compared with prior art
Advantage is notable：1. the solubility property of dicyandiamide solution is good, and salt content is low, and it is easy to separate.2. linear polymerization reaction monomers activity is high, easily
In chain extension.3. the consumption of the chloride of alkali metal or alkaline-earth metal is few, it is easy to wash metal ion.4. it is nonirritant to human body and
Carcinogenicity, operating environment is friendly.
Brief description of the drawings
Fig. 1 is the process chart of solution polycondensation synthesizing linear macromolecular weight poly benzene thioether resin of the present invention.
Fig. 2 is the autoclave structural representation that the present invention is used；1- magnetic driver devices；2- pressure gauges；
3- thermocouples；4- safety valves；5- shaft joints；Agitating shaft under 6-；7- agitators；8- electrical heating elements and insulation furnace tube；
9- cooling water outlets；10- cooling water intakes；11- breather valves.
Specific embodiment
Present invention process flow chart is as shown in Figure 1.
Below by embodiment, the invention will be further described, but content not thereby limiting the invention.
Embodiment 1
1.02mol is sequentially added in the autoclave equipped with mechanical agitation, cooling water, charge door and gas vent
Vulcanized sodium, 1mol paracide, 1mol NaOH, 5mol solvents（1-METHYLPYRROLIDONE, DMAC N,N' dimethyl acetamide）With
And 0.005mol lithium chlorides, electrified regulation intensification under nitrogen protection, in prepolymerization reaction 1h is carried out at 160 DEG C, when temperature rises to
At 220 DEG C, stop heating, make reactor temperature continue to rise using reaction heat, while opening cooling water to adjust and control
Good reactor temperature, in 240 DEG C of temperature, under the conditions of pressure 1MPa, terminates after carrying out polycondensation reaction 1h.Reactor is lowered the temperature, is unloaded
Through being subcooling to 100 DEG C, filtering, filter cake is washed 1 time reaction slurry through salt acid elution 1 time, deionized water after pressure, poly- by what is obtained
Diphenyl sulfide condensate and 1mol vulcanized sodium, 1mol paracide, 3mol solvents（1-METHYLPYRROLIDONE, N, N- dimethylacetamides
Amine）And 0.001mol lithium chlorides are added sequentially in above-mentioned autoclave, under nitrogen protection, in 260 DEG C, pressure 1MPa
Under the conditions of, linear condensation reaction 1h is carried out, reaction slurry is through being subcooling to 100 DEG C, filtering, filter after the cooling of question response kettle, release
Through salt acid elution 1 time, deionized water washs 1 time to cake, then dry polyphenylene sulfide（PPS）Resin.Melt viscosity is reachable
516Pas, product weight yield up to 96%, weight average molecular weight after measured（Mw）It is 55865, molecular weight distributing index 2.25.
Embodiment 2
1.02mol is sequentially added in the autoclave equipped with mechanical agitation, cooling water, charge door and gas vent
Vulcanized sodium, 1mol paracide, 1.1mol potassium hydroxide, 6mol solvents（1-METHYLPYRROLIDONE, HMPA）With
And 0.006mol calcium chloride, electrified regulation intensification under nitrogen protection, in prepolymerization reaction 1.5h is carried out at 170 DEG C, when temperature liter
During to 220 DEG C, stop heating, make reactor temperature continue to rise using reaction heat, while opening cooling water to adjust and control
Reactor temperature is made, in 250 DEG C of temperature, under the conditions of pressure 1.2MPa, is terminated after carrying out polycondensation reaction 1.5h.Reactor drops
Through being subcooling to 105 DEG C, filtering, filter cake is washed 1 time reaction slurry through salt acid elution 2 times, deionized water after temperature, release, will
Polyphenylene sulfide condensate and 1mol vulcanized sodium, 1mol paracide, the 4mol solvents for arriving（1-METHYLPYRROLIDONE, hempa
Acyl triamine）And 0.002mol calcium chloride is added sequentially in above-mentioned autoclave, under nitrogen protection, in 265 DEG C, pressure
Under the conditions of 1.2MPa, carry out linear condensation reaction 1.5h, the cooling of question response kettle, after pressure release reaction slurry through being subcooling to 105 DEG C,
Filtering, through salt acid elution 2 times, deionized water washs 1 time to filter cake, then dry polyphenylene sulfide（PPS）Resin.Melt viscosity can
Up to 554Pas, product weight yield up to 97%, molecular weight after measured（Mw）It is 56754, molecular weight distributing index 2.20.
Embodiment 3
1.03mol is sequentially added in the autoclave equipped with mechanical agitation, cooling water, charge door and gas vent
Vulcanized sodium, 1mol paracide, 1.2mol calcium hydroxides, 7mol solvents（1-METHYLPYRROLIDONE, pyridine）And 0.006mol
Potassium chloride, electrified regulation intensification, in prepolymerization reaction 2h is carried out at 180 DEG C, when temperature rises to 220 DEG C, stops under nitrogen protection
Only heat, make reactor temperature continue to rise using reaction heat, while opening cooling water to adjust and control in reactor
Temperature, in 260 DEG C of temperature, under the conditions of pressure 1.3MPa, terminates after carrying out polycondensation reaction 2h.Reacted after reactor cooling, release
Slurry through being subcooling to 110 DEG C, filtering, filter cake through salt acid elution 2 times, wash 2 times, and the polyphenylene sulfide that will be obtained gathers by deionized water
Fit and 1mol vulcanized sodium, 1mol paracide, 5mol solvents（1-METHYLPYRROLIDONE, pyridine）And 0.003mol potassium chloride
It is added sequentially in above-mentioned autoclave, under nitrogen protection, in 270 DEG C, under the conditions of pressure 1.3MPa, carries out linear condensation
Reaction 2h, the cooling of question response kettle, after pressure release reaction slurry through being subcooling to 110 DEG C, filtering, filter cake through salt acid elution 2 times, go from
Sub- water washing 2 times, then dry polyphenylene sulfide（PPS）Resin.Melt viscosity reaches up to 586Pas, product weight yield
98%, weight average molecular weight after measured（Mw）It is 59543, molecular weight distributing index 2.05.
Embodiment 4
1.04mol is sequentially added in the autoclave equipped with mechanical agitation, cooling water, charge door and gas vent
Anhydrous sodium sulfide, 1mol paracide, 1.2mol sodium carbonate, 8mol solvents（1-METHYLPYRROLIDONE, 1,3- dimethyl -2- miaows
Oxazoline ketone）And 0.007mol aluminium chloride, under nitrogen protection electrified regulation heat up, in carrying out prepolymerization reaction 2.5h at 190 DEG C,
When temperature rises to 220 DEG C, stop heating, using reaction heat make reactor temperature continue rise, while open cooling water with
Reactor temperature is adjusted and controlled, in 270 DEG C of temperature, under the conditions of pressure 1.4MPa, is terminated after carrying out polycondensation reaction 2.5h.
Through being subcooling to 115 DEG C, filtering, filter cake washs 3 to reaction slurry through sulfuric acid scrubbing 2 times, deionized water after reactor cooling, release
Polyphenylene sulfide condensate and 1mol vulcanized sodium, 1mol paracide, 5mol solvents secondary, will obtain（1-METHYLPYRROLIDONE, 1,
3- dimethyl-2-imidazolinones）And 0.003mol aluminium chloride is added sequentially in above-mentioned autoclave, in nitrogen protection
Under, in 280 DEG C, under the conditions of pressure 1.3MPa, carry out linear condensation reaction 2.5h, reaction slurry after the cooling of question response kettle, pressure release
Through being subcooling to 115 DEG C, filtering, through salt acid elution 2 times, deionized water washs 3 times to filter cake, then dry polyphenylene sulfide
（PPS）Resin.Melt viscosity up to 573Pas, product weight yield up to 97%, weight average molecular weight after measured（Mw）It is 58142,
Molecular weight distributing index 2.18.
Embodiment 5
10.5mol is sequentially added in the autoclave equipped with mechanical agitation, cooling water, charge door and gas vent
Anhydrous sodium sulfide, 10mol paracide, 13mol sodium carbonate, 90mol solvents（1-METHYLPYRROLIDONE, N-methylmorpholine）And
0.08mol sodium chloride, electrified regulation intensification under nitrogen protection, in prepolymerization reaction 2.5h is carried out at 190 DEG C, when temperature rises to
At 220 DEG C, stop heating, make reactor temperature continue to rise using reaction heat, while opening cooling water to adjust and control
Good reactor temperature, in 270 DEG C of temperature, under the conditions of pressure 1.4MPa, terminates after carrying out polycondensation reaction 3h.Reactor cooling,
Through being subcooling to 120 DEG C, filtering, filter cake is washed 3 times reaction slurry through sulfuric acid scrubbing 3 times, deionized water, by what is obtained after release
Polyphenylene sulfide condensate and 10mol vulcanized sodium, 10mol paracide, 50mol solvents（1-METHYLPYRROLIDONE, N- methyl
Quinoline）And 0.03mol sodium chloride is added sequentially in above-mentioned autoclave, under nitrogen protection, in 290 DEG C, pressure
Under the conditions of 1.4MPa, linear condensation reaction 3h is carried out, reaction slurry is through being subcooling to 120 DEG C, mistake after the cooling of question response kettle, pressure release
Filter, through salt acid elution 3 times, deionized water washs 3 times to filter cake, then dry polyphenylene sulfide（PPS）Resin.Melt viscosity is reachable
565Pas, product weight yield up to 97%, weight average molecular weight after measured（Mw）It is 58003, molecular weight distributing index 2.20.
Embodiment 6
105mol is sequentially added in the autoclave equipped with mechanical agitation, cooling water, charge door and gas vent
Anhydrous sodium sulfide, 100mol paracide, 130mol sodium acid carbonates, 1000mol solvents（1-METHYLPYRROLIDONE, N, N- diformazans
Yl acetamide）And 1mol magnesium chlorides, electrified regulation intensification, in prepolymerization reaction 3h is carried out at 200 DEG C, works as temperature under nitrogen protection
When degree rises to 220 DEG C, stop heating, make reactor temperature continue to rise using reaction heat, while opening cooling water to adjust
With control reactor temperature, in 280 DEG C of temperature, under the conditions of pressure 1.5MPa, terminate after carrying out polycondensation reaction 3h.Reactor
Through being subcooling to 120 DEG C, filtering, filter cake is washed 3 times reaction slurry through sulfuric acid scrubbing 3 times, deionized water after cooling, release, will
Polyphenylene sulfide condensate and 100mol vulcanized sodium, 100mol paracide, the 600mol solvents for obtaining（1-METHYLPYRROLIDONE,
DMAC N,N' dimethyl acetamide）And 0.4mol magnesium chlorides are added sequentially in above-mentioned autoclave, under nitrogen protection, in
300 DEG C, under the conditions of pressure 1.5MPa, linear condensation reaction 3h is carried out, reaction slurry is through supercooling after the cooling of question response kettle, pressure release
To 120 DEG C, filtering, through salt acid elution 3 times, deionized water washs 3 times to filter cake, then dry polyphenylene sulfide（PPS）Resin.It is molten
Melt-viscosity up to 570Pas, product weight yield up to 97%, weight average molecular weight after measured（Mw）It is 58143, molecular weight distribution refers to
Number 2.18.
Claims (9)
1. a kind of synthetic method of linear high molecular weight polyphenylene sulfide, it is characterised in that carry out as steps described below：
（1）Sequentially added in the autoclave equipped with mechanical agitation, cooling water, charge door and gas vent vulcanized sodium,
Paracide, alkali lye, solvent and auxiliary agent, electrified regulation intensification, anti-in pre-polymerization is carried out at 160~200 DEG C under nitrogen protection
1~4h is answered, when temperature rises to 220 DEG C, stops heating, make reactor temperature continue to rise using reaction heat, while opening
Cooling water, in 240~280 DEG C of temperature, under the conditions of 1~1.5MPa of pressure, is contracted with adjusting and controlling reactor temperature
1~3h of poly- reaction；
（2）Through supercooling, filtering, filter cake will be obtained reaction slurry through pickling, deionized water washing after reactor cooling, pressure release
Polyphenylene sulfide condensate and vulcanized sodium, paracide, solvent, auxiliary agent be added sequentially in above-mentioned autoclave, in nitrogen
Under protection, in 260~300 DEG C, under the conditions of 1~1.5MPa of pressure, carry out linear condensation and react 1~3h, question response kettle is lowered the temperature, let out
Reaction slurry is through supercooling after pressure, filtering, filter cake through pickling, deionized water washing, then dry polyphenylene sulfide（PPS）Tree
Fat；Melt viscosity is more than 500Pas, product weight yield up to more than 96%, weight average molecular weight after measured（Mw）For 55000~
60000, molecular weight distributing index is 2~3.
2. the synthetic method of a kind of linear high molecular weight polyphenylene sulfide according to claim 1, it is characterised in that wherein walk
Suddenly（1）Middle vulcanized sodium is vulcanized sodium or anhydrous sodium sulfide containing the crystallization water；Wherein vulcanized sodium:Paracide mol ratio is
（1.02~1.05）:1, step（2）Middle vulcanized sodium:Paracide mol ratio is 1:1.
3. the synthetic method of a kind of linear high molecular weight polyphenylene sulfide according to claim 1, it is characterised in that wherein walk
Suddenly（1）Middle alkali lye is one or more in NaOH, calcium hydroxide, potassium hydroxide, sodium carbonate, sodium acid carbonate；Wherein alkali
Liquid:Paracide mol ratio is（1~1.3）:1.
4. the synthetic method of a kind of linear high molecular weight polyphenylene sulfide according to claim 1, it is characterised in that wherein walk
Suddenly（1）With（2）Middle solvent is composite solvent system, i.e. 1-METHYLPYRROLIDONE, DMA, pyridine, hexamethyl
Any two kinds in phosphoric triamide, 1,3- dimethyl-2-imidazolinones or N-methylmorpholine；Wherein step（1）Middle solvent:To dichloro
Benzene mole ratio is（5~10）:1, step（2）Middle solvent:Paracide mol ratio is（3~6）:1.
5. the synthetic method of a kind of linear high molecular weight polyphenylene sulfide according to claim 1, it is characterised in that wherein walk
Suddenly（1）With（2）Middle auxiliary agent is the chloride of alkali metal or alkaline-earth metal, i.e. lithium chloride, calcium chloride, aluminium chloride, potassium chloride, chlorination
The mixture of one or more in sodium, magnesium chloride；Wherein step（1）Auxiliary agent:Paracide mol ratio is（0.005~
0.01）:1, wherein step（2）Auxiliary agent:Paracide mol ratio is（0.001~0.004）:1.
6. the synthetic method of a kind of linear high molecular weight polyphenylene sulfide according to claim 1, it is characterised in that wherein walk
Suddenly（1）In the prepolymerization reaction temperature that carries out be 170~185 DEG C, 2~3h of reaction time.
7. the synthetic method of a kind of linear high molecular weight polyphenylene sulfide according to claim 1, it is characterised in that wherein walk
Suddenly（1）In the polycondensation reaction temperature that carries out be 250~260 DEG C, 1.2~1.3MPa of pressure, 1.5~2h of reaction time.
8. the synthetic method of a kind of linear high molecular weight polyphenylene sulfide according to claim 1, it is characterised in that wherein walk
Suddenly（2）In the linear condensation reaction temperature that carries out be 265~280 DEG C, 1.2~1.3MPa of pressure, 1.5~2h of reaction time.
9. the synthetic method of a kind of linear high molecular weight polyphenylene sulfide according to claim 1, it is characterised in that wherein walk
Suddenly（2）Middle chilling temperature is 100~120 DEG C, and pickling is washed 1~3 time, and deionized water is washed 1~3 time, wherein acid used is
Hydrochloric acid or sulfuric acid one or two.
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| CN105713199B (en) * | 2016-01-19 | 2018-01-30 | 成都汇莹新材料有限公司 | A kind of high-purity polyphenylene sulfide resin production process |
| CN106893102B (en) * | 2017-03-10 | 2019-04-05 | 四川中科兴业高新材料有限公司 | A method of polyphenylene sulfide is prepared with synthesis mother liquid |
| CN107936250B (en) * | 2017-11-29 | 2020-06-16 | 中国石油化工股份有限公司 | Method for recycling polyphenylene sulfide oligomer |
| CN108164702B (en) * | 2017-12-27 | 2020-05-12 | 浙江新和成股份有限公司 | Preparation method of polyphenylene sulfide resin and polyphenylene sulfide resin prepared by preparation method |
| CN108752586A (en) * | 2018-07-04 | 2018-11-06 | 西北师范大学 | A kind of preparation method of colored fascicular texture polyphenylene sulfide |
| CN109608638A (en) * | 2018-11-19 | 2019-04-12 | 太原理工大学 | A kind of synthetic method of linear polyphenylthioether of high molecular weight |
| CN109776798B (en) * | 2018-12-18 | 2020-08-25 | 浙江新和成特种材料有限公司 | High molecular weight polyphenylene sulfide resin and preparation method and application thereof |
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| CN1075529C (en) * | 1997-02-05 | 2001-11-28 | 徐登顺 | Industrial synthetic technology of linear-type high-molecular-weight polyphenyl thio-ether |
| JP4765264B2 (en) * | 2003-07-23 | 2011-09-07 | 東レ株式会社 | Process for producing polyphenylene sulfide |
| CN103242528B (en) * | 2013-04-22 | 2015-08-19 | 中国石油化工股份有限公司 | A kind of synthetic method of high-molecular linear polyphenyl thioether |
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