CN102127219A - Method for purifying polyether ketone/polyether sulfone polymers - Google Patents
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Abstract
The invention discloses a method for purifying polyether ketone/polyether sulfone polymers, which comprises: grinding polymers containing impurities, sieving, and filling in a container together with deionized water, treating in ultrasound at 20 to 95 DEG C for 20 to 60 minutes, filtering the material mixed liquid treated in ultrasound in a centrifuge to remove water, drying at 130 DEG C and under vacuum till constant weight, and thus obtaining the purified polymers, wherein in the ultrasonic treatment process, acid solution can be added to improve a purifying effect. The purified product contains less sodium, potassium, aluminum, calcium, iron, phosphorus, sulfur and the like. The method can quickly and efficiently purify polyether ketone/polyether sulfone polymers, adopt simple equipment, lower polymer purification temperature and pressure, greatly save energy, reduce production cost, easily apply to large-scale production line and meet requirements of industrial large-scale production. The polyether ketone/polyether sulfone polymers purified by the invention can be used for processing parts of electronic and electrical parts and manufacturing medical appliances.
Description
Technical field
The present invention relates to polymer arts, be specifically related to a kind of purification process of polyetherketone/polyethersulfone.
Technical background
Polyetherketone/polyethersulfone commercialization has had the history of three more than ten years, although its synthesis technique has been obtained significant progress and improvement, but the less report of seeing of the Status of development of the aftertreatment purification technique on the suitability for industrialized production, yet the purity of polyetherketone/polyethersulfone is significant to the developing of its Application Areas, as at electron device industry requirement metal ion content in the ppb level, medical and health industry then requires content lower, and preparing polyetherketone/polyethersulfone technology at present all needs a large amount of (10wt% at least) metal base or salt (as KOH or Na
2CO
3Deng) make catalyzer, how metal ion is as far as possible thoroughly removed from superpolymer, more and more become the technical bottleneck in the production.Often equipment is huge for present known purification process, complex process.
The treatment process of removing inorganic salt in aryl polyethers or the aryl polythioether of Britain Victrex company alerting bulletin, as patent EP0292211 is to form liquid form by superpolymer is melted and/or is dissolved in solvent such as the sulfobenzide, in being soluble in the aqueous phase again inorganic salt are dissolved out, but its flow process complexity, facility investment is bigger.Patent US20050004340 discloses a kind of pressurized vessel that washs inorganic salt, by the water of high pressure-temperature being squeezed into the high-pressure-resistant vessel that material is housed, water is slowly flowing out and is taking inorganic salinity out of at the container the other end after by material under the pressure in 50 Palestine and Israels, this method can obtain comparatively ideal refining effect, but because of its structure complicated, the product flow velocity is restricted, investment of industrialization zoom facility and production maintenance cost height, and all have problems at aspects such as securities, production efficiency and economic benefit are difficult to improve, and are difficult for being widely used on the suitability for industrialized production.
The last handling process about polyether-ether-ketone/polyethersulfone that China Jilin University announces is the process means that adopts the repeated multiple times poach, each all material need being mixed is made into rarer mixture post-heating to boiling state in a large amount of water, as Chinese patent 89100356.8,96100940.3,00107139.4 etc., its product contains Na
+Deng concentration of metal ions still greater than 1000ppm.Summing up above treatment process, mostly is the mode that adopts high temperature poach or High Temperature High Pressure water washing, and energy consumption is big, the production cost height, even also can influence the thermostability of product.
Open day on January 19th, 2000 of CN 1241585A() a kind of cold dispersive technology is disclosed, can make the product concentration of metal ions be reduced to 200ppm, yet the poach process still must be more than 8 times, and this technology only rests on laboratory stage, very are not applicable to suitability for industrialized production.
Ultrasonic purification techniques is a kind of newer purification technique, but ultrasonic cleaning apparatus technology maturation, patent from present announcement, the application of relevant ultrasonic wave purification material is mainly at medicine, food and field of biology, as the disclosed Potenlini that utilizes in the supersound extraction purifying bagasse of CN02109272.8, CN200410026912.2 is disclosed to be extracted and the purified polysaccharide composition from the Chinese medicine monkshood, CN200610126830.4 disclosed from herbal medicine extracting effective components, the disclosed method of extracting apigenin from Philippine Violet Herb of CN200910170069.8 improves apigenin yield and purity etc. widely.
Ultrasonic equipment is applied to chemical industry purification aspect also report, the method for the ultrasonic cleaning Manganse Dioxide of announcing as patent CN03156025.3.What but this method was handled is a kind of inorganic powder, and particle is bigger, and the physics that is combined into of impurity and powder mixes, and bonding force is little, and impurity is easy to move out.Polyetherketone/polyethersulfone is a kind of organic polymer, wherein the combination degree of impurity and powder is tight, the combination of existing physical force, the end group combination of chemical force is also arranged, adopt conventional technological method to be difficult to reach the ideal purification effect, therefore, be necessary to seek a kind of method of more effective purifying polyetherketone/polyethersulfone.
Summary of the invention
It is low to the objective of the invention is to solve present polyetherketone/polyethersulfone existing efficient of purifying, energy consumption is big, problems such as cost height, a kind of purification process of polymer materials is provided, this method can overcome above-mentioned existing problems, and the device structure that is adopted is simple, is the working standard equipment in the suitability for industrialized production, and easy to operate, the removal of impurities ability is strong.
The purification process of a kind of polyetherketone/polyether sulfone polymkeric substance is characterized in that comprising the steps:
(1) polymkeric substance that contains impurity is pulverized and by 25 purpose screen clothes;
(2) polymkeric substance that contains impurity and the deionized water after will pulverizing put into container, 20 ℃ ~ 95 ℃ following supersound process 20 ~ 60 minutes, the mixing of materials liquid after ultrasonic with whizzer filtering and removing moisture, finished cleaning process one time; Repeat above-mentioned cleaning process 4 ~ 5 times;
(3) under 130 ℃ of vacuum, be dried to constant weight, obtain the polymkeric substance behind the purifying;
The described structure that contains the polymkeric substance of impurity comprises following three parts: phenyl moiety; Carbonyl and/or sulfone part; Ether and/or thioether part.
In the step (1), the described polymkeric substance that contains impurity is preferably polyether-ether-ketone, polyetherketone, PEKK, polyetherketoneetherketoneketone and polyether ether ketone ketone, polyethersulfone, biphenyl polyether sulfone.
When ultrasonic wave acted on liquid, the great shockwave of formed thousands of collapse of bubbles meeting generate energys in the liquid was equivalent to the high temperature of moment generation and up to thousands of normal atmosphere, this phenomenon is referred to as " cavitation effect ".Under action of ultrasonic waves, impurity that polymkeric substance is contained and solvent are moved to aqueous phase from polymkeric substance.Residual solvent in the polymkeric substance also can obviously precipitate into aqueous phase, the amount of residual solvent before purifying with purifying after difference be at least 10ppm, can be at least 100ppm in some cases.
The described polymkeric substance that contains impurity is the solid polymer of any physical form, be preferably Powdered, particulate state or circle granulous polymkeric substance, most preferably be polymkeric substance with micropore because have micropore polymkeric substance can to form big as far as possible surface in contact long-pending with water.
When the described polymkeric substance that contains impurity contained water-insoluble solvent, the polymkeric substance that contains impurity after the pulverizing needed to carry out step (2) again after the acetone or alcohol washing.
In the step (2), the ultrasonic power density 〉=0.3W/cm of described supersound process
2, ultrasonic frequency range is 40 ~ 1000KHz.
The contriver finds, for the foreign ion of removal required for the present invention, adopts the ultrasonic generator of upper frequency just can obtain purification effect preferably, and greater than under the 80KHz, foreign ion can be cleaned totally more fully.As a kind of preferred version, described ultrasonic frequency is preferably 80 ~ 1000KHz.
Described container is the tank body or the storage tank class container of Ultrasonic Cleaners or the stainless steel that ultrasonic generator is housed.
Described container inner bottom part and inner side-wall are fixed with ultrasonic generator.
As a kind of preferred version, described container inner bottom part is fixed with ultrasonic generator, and the inner side-wall of described container is hung with movably ultrasonic generator.Ultrasonic generator is changed into mobilizable, can not only guarantee hyperacoustic cleaning performance, and can guarantee the homogeneity that material is cleaned according to container size and any putting position of material input amount.
The content of polymkeric substance is 5 ~ 90 weight % in the mixture of described polymkeric substance that contains impurity and deionized water.
The content of deionized water is preferably the maxima solubility that can satisfy impurity component at least in the mixture of described polymkeric substance that contains impurity and deionized water.
Described impure polymkeric substance both can be the polymkeric substance of not doing any aftertreatment after the polyreaction, and this base polymer contains a large amount of solvents especially water-soluble solvent such as tetramethylene sulfone usually, also can be the polymkeric substance of having handled through preliminary purification.
In the step (2), suitably add a certain amount of acid solution and can obtain better impurity-eliminating effect.Add acid solution and can weaken the Chemical bond power of impurity and superpolymer to obtain impurity-eliminating effect more completely.
As a kind of preferred version, in the step (2),, add with respect to acid solution when time deionized water quality 0.1 ~ 5% except that last cleaning process.
Described acid solution is preferably phosphoric acid, hydrochloric acid or acetic acid.
After adding described acid solution, the pH value of mixing of materials liquid is preferably 1 ~ 4.
When described impurity was Na, the concentration of Na was lower than 100ppm for being higher than 0 in the polymkeric substance behind the purifying; When described impurity was K, the concentration of K was lower than 50ppm for being higher than 0 in the polymkeric substance behind the purifying; When described impurity was Ca, the concentration of Ca was lower than 100ppm for being higher than 0 in the polymkeric substance behind the purifying; When described impurity was Fe, the concentration of Fe was lower than 100ppm for being higher than 0 in the polymkeric substance behind the purifying; When described impurity was Al, the concentration of Al was lower than 50ppm for being higher than 0 in the polymkeric substance behind the purifying; When described impurity was P, the concentration of P was lower than 50ppm for being higher than 0 in the polymkeric substance behind the purifying; When described impurity was S, the concentration of S was lower than 50ppm for being higher than 0 in the polymkeric substance behind the purifying.
When described impurity was F, the difference of the amount of impurity F before and after the purifying was 20ppm at least, and after described purification process processing, the concentration of F is lower than 50ppm for being higher than 0 in the polymkeric substance of purifying; When described impurity was Cl, the difference of the amount of impurity Cl before and after the purifying was 20ppm at least, and after described purification process processing, the concentration of Cl is lower than 50ppm for being higher than 0 in the polymkeric substance of purifying.
Compared with prior art, the present invention has following beneficial effect:
The present invention adopts the supersound process technology, utilizes ultrasonication when liquid, and the bubble shockwave that is produced that breaks makes the impurity component in the material dissolve in liquid phase in the liquid, has realized purifying polyetherketone/polyether sulfone polymkeric substance quickly and efficiently; The present invention adopts equipment simple, can evenly clean material, need not material is heated to very high-temperature, need not that also material is in and is higher than under the condition of high voltage of environmental stress, and save energy reduces production costs greatly; Be possessed of good qualities through the polyetherketone/polyether sulfone polymkeric substance behind the purifying of the present invention, can be applicable to process the electronic apparatus part, have excellent electric insulating; Be applied to prepare the medical industry device and can reach hygienic standard, even can be used for preparing artificial bone.
Description of drawings
Fig. 1 is the structural representation of described container;
Wherein, 1 is container body, and 2 is first ultrasonic generator, and 3 is well heater, and 4 is thermostat, and 5 is valve, and 6 is second ultrasonic generator.
Embodiment
Further explain the present invention below in conjunction with embodiment, but embodiment does not do any type of qualification to the present invention.
Used container is seen Fig. 1.
In the following embodiments except as otherwise noted, with % be unit be the quality percentage composition, be that the impurity ion content of unit is measured by inductively coupled plasma atomic emission spectrum (ICPAES) with ppm.
Embodiment 1:With the tetramethylene sulfone is the purifying of polyether-ether-ketone (PEEK) resin of solvent preparation
After getting above-mentioned polyether-ether-ketone 700g and pulverizing, put into the Ultrasonic Cleaners that 10L has heating function with the 7kg deionized water, its hyperacoustic power density is 0.3W/cm
2Frequency is 50KHz, after under 30 ℃ of temperature condition ultrasonic 40 minutes, with mixing of materials liquid whizzer filtering and removing most of moisture, finish cleaning process one time, re-treatment 5 times, wherein adding the phosphoric acid of 0.5% mass parts (this quality relatively) for the 3rd time, mixing of materials liquid system pH value is 1.71, under 130 ℃ of vacuum, be dried to constant weight, measure solvent and impurity ion content in the polyether-ether-ketone, wherein solvent is measured with gas chromatographicanalyzer, and polymkeric substance is as shown in table 1 according to above-mentioned steps processing its solvent of mensuration and impurity ion content.
Table 1
| Residuals content | Before the processing | Handle 1 | Handle | 2 times | Handle 3 times | Handle 4 | Handle | 5 times |
| Tetramethylene sulfone | 85% | 20% | 5% | 0.12% | 633 ppm | 78 ppm | ||
| Na（ppm） | 4% | 7564 | 2552 | 756 | 211 | 88 | ||
| K（ppm） | 1% | 1175 | 856 | 368 | 155 | 49 | ||
| Al（ppm） | 1431 | 897 | 523 | 324 | 118 | 36 | ||
| Ca（ppm） | 3253 | 1312 | 445 | 181 | 76 | 31 | ||
| Fe（ppm） | 4697 | 1367 | 631 | 314 | 115 | 68 | ||
| P（ppm） | 854 | 642 | 326 | 177 | 75 | 13 | ||
| S（ppm） | 996 | 167 | 91 | 34 | 19 | 7 |
Comparative Examples 1:Adopt the same materials with embodiment 1 equivalent, pulverize the back at blowing and boil under normal pressure with the deionized water of equivalent and removed solvent and inorganic salt to seething with excitement in 40 minutes.The impurity ion content test result is as shown in table 2, and as seen, the impurity ion content of conventional poach is apparently higher than the impurity ion content of ultrasonication.
Table 2
| Residuals content | Handle 1 | Handle | 2 times | Handle 3 times | Handle 4 | Handle | 5 times |
| Tetramethylene sulfone | 45% | 25% | 5.4% | 0.88% | 1867ppm | ||
| Na（ppm） | 2% | 0.13% | 18791 | 9183 | 5313 | ||
| K（ppm） | 0.5% | 0.03% | 7645 | 2186 | 1876 | ||
| Al（ppm） | 1113 | 1222 | 933 | 649 | 477 | ||
| Ca（ppm） | 2346 | 1784 | 1168 | 781 | 574 | ||
| Fe（ppm） | 4047 | 3766 | 3272 | 2718 | 2397 | ||
| P（ppm） | 731 | 656 | 556 | 492 | 446 | ||
| S（ppm） | 811 | 756 | 533 | 397 | 288 |
Embodiment 2:With the sulfobenzide is the purifying of polyether-ether-ketone (PEEK) resin of solvent preparation
After getting above-mentioned polyether-ether-ketone 20kg and pulverizing, divide boiling washing 8 times with 300L acetone, remove the sulfobenzide in the material, to extract the material of acetone and 200kg deionized water then and put into 300L together and have the stainless steel vessel that heating jacket and outer wall are installed several ultrasonic generators, its hyperacoustic power density is 10W/cm
2, frequency 300KHz; Under 70 ℃ of temperature condition ultrasonic 40 minutes, with the mixing of materials liquid most of water of whizzer filtering and removing, finish cleaning process one time, re-treatment 4 times, wherein at the hydrochloric acid of the 3rd adding 0.3% mass parts (this quality relatively), mixing of materials liquid system pH value is 1.08, is dried to constant weight under 130 ℃ of vacuum, measure the impurity ion content in the polyether-ether-ketone, polymkeric substance is as shown in table 3 according to above-mentioned steps processing its solvent of mensuration and impurity ion content.
Table 3
| Residuals content | Before ultrasonic | Handle 1 | Handle | 2 times | Handle 3 times | Handle 4 times |
| Na（ppm） | 5.2% | 4356 | 992 | 226 | 63 | |
| K（ppm） | 2.1% | 2255 | 722 | 198 | 28 | |
| Al（ppm） | 2131 | 759 | 238 | 86 | 35 | |
| Ca（ppm） | 4855 | 1296 | 469 | 175 | 42 | |
| Fe（ppm） | 6756 | 2104 | 982 | 268 | 52 | |
| P（ppm） | 1456 | 323 | 195 | 92 | 21 | |
| S（ppm） | 1155 | 233 | 57 | 21 | 9 |
Comparative Examples 2:Adopt the same materials with embodiment 2 equivalent, blowing pulverize the back remove sulfobenzide with the normal pressure washing with acetone after and the deionized water of equivalent boil and removed solvent and inorganic salt in 40 minutes.The impurity ion content test result is as shown in table 4, and as seen, the impurity ion content of normal pressure poach is apparently higher than the impurity ion content of ultrasonication.
Table 4
| Residuals content | Handle 1 | Handle | 2 times | Handle 3 times | Handle 4 | Handle | 5 times |
| Na（ppm） | 2.2% | 9655 | 6533 | 4168 | 2867 | ||
| K（ppm） | 0.9% | 6967 | 4109 | 2897 | 1813 | ||
| Al（ppm） | 1222 | 845 | 668 | 532 | 476 | ||
| Ca（ppm） | 3184 | 2675 | 2121 | 1776 | 1577 | ||
| Fe（ppm） | 5231 | 3764 | 2446 | 1735 | 1174 | ||
| P（ppm） | 956 | 692 | 487 | 300 | 223 | ||
| S（ppm） | 656 | 513 | 399 | 301 | 186 |
Embodiment 3:With the tetramethylene sulfone is the purifying of polyethersulfone (PES) resin of solvent preparation
After getting above-mentioned polyethersulfone 20kg and pulverizing and the 200kg deionized water put into the 300L stirring tank together, under 50 ℃ of temperature condition, making the hyperacoustic power density that produces in the still with ultrasonic generator is 20W/cm
2, frequency 800KHz; Handle after 60 minutes, with mixing of materials liquid whizzer filtering and removing most of moisture, finish cleaning process one time, re-treatment 5 times, wherein adding the phosphoric acid of 1% mass parts (this quality relatively) for the 2nd time, mixing of materials liquid system pH value is 1.56, under 130 ℃ of vacuum, be dried to constant weight, measure solvent and impurity ion content in the polyethersulfone, wherein solvent is measured with gas chromatographicanalyzer, and its solvent of mensuration and impurity ion content were as shown in table 5 after polymkeric substance was handled according to above-mentioned steps.Comparative example 1,2 and 3 can find that along with the increase of ultrasonic power density, its purification efficiency increases gradually.
Table 5
| Residuals content | Before the processing | Handle 1 | Handle | 2 times | Handle 3 times | Handle 4 | Handle | 5 times |
| Tetramethylene sulfone | 70% | 9.8% | 1.2% | 2331 | 264ppm | 16ppm | ||
| Na（ppm） | 6.5% | 3332 | 1412 | 566 | 152 | 24 | ||
| Al（ppm） | 2675 | 738 | 331 | 122 | 73 | 16 | ||
| Ca（ppm） | 4657 | 1112 | 387 | 144 | 25 | 9 | ||
| Fe（ppm） | 6342 | 2693 | 979 | 232 | 89 | 34 | ||
| P（ppm） | 1235 | 756 | 299 | 152 | 79 | 23 | ||
| S（ppm） | 876 | 287 | 86 | 48 | 19 | 3 |
Comparative Examples 3:The same materials of employing and embodiment 3 equivalent, the water boil with equivalent after blowing is pulverized removed solvent and inorganic salt in 60 minutes.The impurity ion content test result is as shown in table 6, and as seen, the impurity ion content of normal pressure poach is apparently higher than the impurity ion content of ultrasonication.
Table 6
| Residuals content | Handle 1 | Handle | 2 times | Handle 3 times | Handle 4 | Handle | 5 times |
| Tetramethylene sulfone | 37.5% | 22% | 6.5% | 3499 | 817 | ||
| Na（ppm） | 1.3% | 6319 | 4988 | 3549 | 2229 | ||
| Al（ppm） | 2110 | 1818 | 1100 | 831 | 760 | ||
| Ca（ppm） | 3748 | 3029 | 2319 | 1539 | 990 | ||
| Fe（ppm） | 4283 | 2419 | 1876 | 1401 | 929 | ||
| P（ppm） | 856 | 799 | 652 | 519 | 433 | ||
| S（ppm） | 666 | 588 | 312 | 277 | 151 |
Embodiment 4:With the tetramethylene sulfone is the purifying of biphenyl polyether sulfone (PPSU) resin of solvent preparation
After getting above-mentioned biphenyl polyether sulfone 20kg pulverizing, put into 300L together with the 200kg deionized water and have the stainless steel vessel that heating jacket and outer wall are installed several ultrasonic generators, under 40 ℃ of temperature condition, making the hyperacoustic power density that produces in the still with ultrasonic generator is 10W/cm
2, frequency 900KHz; Handle after 40 minutes, with mixing of materials liquid whizzer filtering and removing most of moisture, the acetic acid that wherein adds 0.1% mass parts (this quality relatively) in the 4th, mixing of materials liquid system pH value is 3.76, finish cleaning process one time, re-treatment 5 times, under 130 ℃ of vacuum, be dried to constant weight, measure solvent and impurity ion content in the polyethersulfone, wherein solvent is measured with gas chromatographicanalyzer, and its solvent of mensuration and impurity ion content were as shown in table 7 after polymkeric substance was handled according to above-mentioned steps.
Table 7
| Residuals content | Before the processing | Handle 1 | Handle | 2 times | Handle 3 times | Handle 4 times | Handle 5 times |
| Tetramethylene sulfone | 70% | 12% | 5.5% | 0.9% | 364ppm | 11ppm | |
| Na（ppm） | 5.3% | 5456 | 1222 | 453 | 153 | 64 | |
| K（ppm） | 2.6% | 3355 | 845 | 353 | 143 | 54 | |
| Al（ppm） | 2654 | 959 | 375 | 95 | 43 | 21 | |
| Ca（ppm） | 4978 | 1564 | 676 | 224 | 73 | 9 | |
| Fe（ppm） | 6989 | 2467 | 776 | 244 | 85 | 22 | |
| P（ppm） | 2756 | 1196 | 696 | 335 | 123 | 43 | |
| S（ppm） | 1187 | 453 | 131 | 38 | 13 | 4 |
Comparative Examples 4:The same materials of employing and embodiment 4 equivalent, the water boil with equivalent after blowing is pulverized removed solvent and inorganic salt in 40 minutes.The impurity ion content test result is as shown in table 8, and as seen, the impurity ion content of normal pressure poach is apparently higher than the impurity ion content of ultrasonication.
Table 8
| Residuals content | Handle 1 | Handle | 2 times | Handle 3 times | Handle 4 times | Handle 5 times |
| Tetramethylene sulfone | 41% | 27% | 9.5% | 2.2% | 1.1% | |
| Na（ppm） | 2.7% | 1.8% | 8522 | 5849 | 3721 | |
| K（ppm） | 1.6% | 0.9% | 5265 | 3991 | 2774 | |
| Al（ppm） | 1976 | 1089 | 867 | 464 | 275 | |
| Ca（ppm） | 3874 | 2999 | 1779 | 1219 | 987 | |
| Fe（ppm） | 4865 | 3876 | 2116 | 1265 | 874 | |
| P（ppm） | 2078 | 1754 | 1197 | 846 | 543 | |
| S（ppm） | 987 | 756 | 417 | 287 | 157 |
Embodiment 5:With 1kg Na
+Concentration is the powdered samples and the 8L deionized water of the polyetheretherketonepolymer polymer that has the terminal chain of fluorine of 1220ppm, puts into the 10L Ultrasonic Cleaners respectively, and its hyperacoustic power density is 15W/cm
2, frequency 50KHz; Under 60 ℃ of temperature ultrasonic 30 minutes, and add the acetic acid of 3% mass parts (this quality relatively), mixing of materials liquid system pH value is 2.53, with mixing of materials liquid with the most of water of whizzer filtering and removing, under 130 ℃ of vacuum, be dried to constant weight, the Na in the polyether-ether-ketone
+Concentration is reduced to 543ppm, and dried polymkeric substance is handled its Na of back twice again according to above-mentioned steps
+Concentration is reduced to 69ppm.By
13The C nuclear magnetic resonance spectrometer is analyzed the end group through the polymkeric substance of supersound process, confirms that the content of the terminal chain of fluorine does not change because of supersound process.
Claims (10)
1. the purification process of polyetherketone/polyether sulfone polymkeric substance is characterized in that comprising the steps:
(1) polymkeric substance that contains impurity is pulverized and by 25 purpose screen clothes;
(2) polymkeric substance that contains impurity and the deionized water after will pulverizing put into container, 20 ℃ ~ 95 ℃ following supersound process 20 ~ 60 minutes, the mixing of materials liquid after ultrasonic with whizzer filtering and removing moisture, finished cleaning process one time; Repeat above-mentioned cleaning process 4 ~ 5 times;
(3) under 130 ℃ of vacuum, be dried to constant weight, obtain the polymkeric substance behind the purifying;
The described structure that contains the polymkeric substance of impurity comprises following three parts: phenyl moiety; Carbonyl and/or sulfone part; Ether and/or thioether part.
2. purification process according to claim 1 is characterized in that in the step (1), and when the described polymkeric substance that contains impurity contained water-insoluble solvent, the polymkeric substance after the pulverizing needed to carry out step (2) again behind washing with acetone.
3. purification process according to claim 1 is characterized in that in the step (1), and the described polymkeric substance that contains impurity is polyether-ether-ketone, polyetherketone, PEKK, polyetherketoneetherketoneketone, polyether ether ketone ketone, polyethersulfone or the biphenyl polyether sulfone that contains impurity.
4. purification process according to claim 1 is characterized in that in the step (2) the ultrasonic power density 〉=0.3W/cm of described supersound process
2, ultrasonic frequency is 40 ~ 1000KHz.
5. purification process according to claim 4 is characterized in that described ultrasonic frequency is 80 ~ 1000KHz.
6. purification process according to claim 1 is characterized in that described container is a Ultrasonic Cleaners in the step (2), or the tank body or the storage tank class container of the stainless steel of ultrasonic generator are housed.
7. purification process according to claim 1 is characterized in that in the step (2), and the content that contains the polymkeric substance of impurity in the mixture of described polymkeric substance that contains impurity and deionized water is 5 ~ 90 weight %.
8. purification process according to claim 1 is characterized in that in the step (2), adds with respect to the acid solution when time deionized water quality 0.1 ~ 5% in removing last any cleaning process.
9. purification process according to claim 8 is characterized in that described acid solution is phosphoric acid, hydrochloric acid or acetic acid.
10. purification process according to claim 8, it is characterized in that adding described acid solution after, the pH value of mixing of materials liquid is 1 ~ 4.
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| CN109796762A (en) * | 2019-01-21 | 2019-05-24 | 江西金海新能源科技有限公司 | A kind of sulfone polymer composition and preparation method thereof |
| CN112795014A (en) * | 2020-12-23 | 2021-05-14 | 金发科技股份有限公司 | Aromatic sulfone polymer and preparation method and application thereof |
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| CN102585206A (en) * | 2012-03-07 | 2012-07-18 | 长春工业大学 | Novel polyether ketone refining process |
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