[go: up one dir, main page]

CN110144045B - A kind of sulfone-containing polysiloxane fiber and preparation method thereof - Google Patents

A kind of sulfone-containing polysiloxane fiber and preparation method thereof Download PDF

Info

Publication number
CN110144045B
CN110144045B CN201910408768.5A CN201910408768A CN110144045B CN 110144045 B CN110144045 B CN 110144045B CN 201910408768 A CN201910408768 A CN 201910408768A CN 110144045 B CN110144045 B CN 110144045B
Authority
CN
China
Prior art keywords
sulfone
containing polysiloxane
acid
polysiloxane
siloxane
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201910408768.5A
Other languages
Chinese (zh)
Other versions
CN110144045A (en
Inventor
冯圣玉
国孟东
张洁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shandong University
Original Assignee
Shandong University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shandong University filed Critical Shandong University
Priority to CN201910408768.5A priority Critical patent/CN110144045B/en
Publication of CN110144045A publication Critical patent/CN110144045A/en
Application granted granted Critical
Publication of CN110144045B publication Critical patent/CN110144045B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G77/00Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/04Polysiloxanes
    • C08G77/22Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen
    • C08G77/28Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen sulfur-containing groups
    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01DMECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00Formation of filaments, threads, or the like
    • D01D5/0007Electro-spinning
    • D01D5/0015Electro-spinning characterised by the initial state of the material
    • D01D5/003Electro-spinning characterised by the initial state of the material the material being a polymer solution or dispersion
    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01FCHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/58Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
    • D01F6/76Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from other polycondensation products

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Silicon Polymers (AREA)

Abstract

本发明涉及一种含砜聚硅氧烷纤维及其制备方法。本发明的含砜聚硅氧烷纤维,以大环含砜硅氧烷作为原料,在碱或酸催化下,开环聚合得到含砜聚硅氧烷,这一含砜聚硅氧烷可用简单的纺丝工艺进行纺丝,制备出可纺性好,性能优良的聚硅氧烷纤维。本发明的合成方法简单,砜基的引入加大了聚硅氧烷的结晶性与刚性,所制备的聚硅氧烷纤维可以在特定条件下以高产量循环回原来的大环单体,绿色环保。The invention relates to a sulfone-containing polysiloxane fiber and a preparation method thereof. The sulfone-containing polysiloxane fiber of the present invention uses macrocyclic sulfone-containing siloxane as a raw material, and is catalyzed by alkali or acid to undergo ring-opening polymerization to obtain sulfone-containing polysiloxane. The sulfone-containing polysiloxane can be obtained by simple The polysiloxane fiber with good spinnability and excellent performance is prepared by the spinning process. The synthesis method of the invention is simple, the introduction of the sulfone group increases the crystallinity and rigidity of the polysiloxane, the prepared polysiloxane fiber can be recycled back to the original macrocyclic monomer with high yield under specific conditions, and the green Environmental friendly.

Description

Sulfone-containing polysiloxane fiber and preparation method thereof
Technical Field
The invention relates to the field of synthetic fibers, in particular to a sulfone-containing polysiloxane fiber and a preparation method thereof.
Background
The synthetic fiber is prepared by polymerizing organic synthetic monomers to obtain corresponding polymers and then spinning. At present, the development of synthetic fibers is very rapid, wherein the common synthetic fibers are mainly divided into three categories, namely polyamide fibers (nylon), polyester fibers (terylene) and polyacrylonitrile fibers (acrylon). Synthetic fibers are strong, abrasion resistant, and elastic, but have the common disadvantage of poor moisture absorption and heat resistance, and are petroleum-based products. At present, petroleum resources are limited, and the existing fibers cannot be effectively recycled, so that high requirements are put on the supply of monomers.
Unlike the above polymers, polysiloxanes are elementary organic polymers consisting of alternating silicon and oxygen atoms in the main chain, the silicon atoms containing an organic group (R). Because of the performances of high and low temperature resistance, aging resistance, weather resistance, physiological inertia, good air permeability and the like, the composite material plays an irreplaceable role in the fields of aerospace, chemical engineering, electronics and electricity and the like. Through the development of eighty years, the polysiloxane mainly comprises four major varieties of silicone oil, silicone rubber, silicone resin and a silane coupling agent. However, synthetic fibers are commonly used, but silicone products are rare. This is due to the very soft, ultra-low siloxane rotational barrier (0.8kJ mol) of the polysiloxane backbone-1) And has a large free volume, thereby causing a problem that the polysiloxane is not easily spun.
There are also some patent documents reporting on silicone fibers, for example: chinese patent document CN101838863B discloses a method for preparing polysiloxane fiber, wherein polysiloxane fiber stock solution is formed by polycondensation of polysiloxane terminated by alkoxy or amino alkyl and organic silicon resin, and then by melt spinning and winding. However, the method does not change the main chain structure of polysiloxane, the intermolecular force is small, and the obtained fiber cannot be recycled once being crosslinked. For another example: chinese patent document CN1710162A discloses a process for producing silicone fiber, wherein the polysiloxane fiber stock solution is an addition type silicone system composed of vinyl-terminated polysiloxane, a vulcanization crosslinking agent containing silicon-hydrogen bond, and a platinum-series catalyst. The disadvantage of this system is that when compounds containing sulfur, nitrogen and phosphorus are present, the catalyst is deactivated, which affects the final spinning.
Disclosure of Invention
Aiming at the defects of the prior art, particularly the problem that the polysiloxane is not easy to spin, and simultaneously, the invention solves the problem that the existing polysiloxane fiber cannot be recycled, and provides the sulfone-containing polysiloxane fiber and the preparation method thereof. The invention introduces sulfonyl group with larger polarity into the siloxane chain segment, changes the property of the main chain, prepares novel organic silicon fiber, and solves the problem that the existing siloxane is not easy to spin. The resulting sulfone-containing polysiloxanes are easy to spin and have very good thermal stability and, in particular cases, permit high-yield recycling of the monomers. The synthesis route of the sulfone-containing polysiloxane is simple and efficient, and the prepared sulfone-containing polysiloxane is easy to spin and has excellent temperature resistance and recyclability.
The technical scheme of the invention is as follows:
a sulfone-containing polysiloxane having the following structural formula:
Figure BDA0002062144240000021
wherein: r1Alkylene, arylene, alkylene ether, biphenylene, or diphenylene sulfide which is a linear or branched structure;
R2is hydrogen, methyl, ethyl, phenyl or trifluoropropyl, R in different positions2The substituents are the same or different;
n is 2 to 10, and m is 10 to 3000.
According to the invention, when R1When the alkyl or alkyl ether is used, the alkyl or alkyl ether is preferably C1-C10; further preferred R1Is butylene, 3, 6-dioxo-1, 8-octyl, 1, 4-xylylene or diphenylene sulfide.
According to the invention, it is preferred that the sulfone-containing polysiloxane has the formula:
R1is butylene, 3, 6-dioxo-1, 8-octyl, 1, 4-xylylene or diphenylene sulfide group;
R2is hydrogen, methyl, ethyl, phenyl or trifluoropropyl, R in different positions2The substituents are the same or different;
n is 3 to 9, and m is 50 to 2500.
According to the present invention, preferably, the polymerization degree m of the sulfone-containing polysiloxane is 100, and the weight average molecular weight is 42000.
According to the invention, the preparation method of the sulfone-containing polysiloxane comprises the following steps:
the preparation method comprises the steps of taking macrocyclic siloxane containing sulfone as a raw material, dissolving the macrocyclic siloxane in an organic solvent, and carrying out ring-opening polymerization reaction under the protection of protective gas and catalysis of a catalyst to obtain the macrocyclic siloxane.
According to the present invention, preferably, said sulfone-containing macrocyclic siloxane has the following structure:
Figure BDA0002062144240000022
wherein: r1、R2The same meanings as above, and n is 2 to 10.
Further preferably, said sulfone-containing macrocyclic siloxane has the following structure:
Figure BDA0002062144240000023
according to the present invention, the organic solvent is preferably one of dimethyl sulfoxide, N-dimethylformamide, N-dimethylacetamide, N-methylpyrrolidone, tetrahydrofuran, and 1, 4-dioxane, and is more preferably dimethyl sulfoxide.
According to the present invention, the catalyst is preferably an inorganic base (hydroxides of lithium, sodium, potassium, ammonium, barium, sodium fluoride, etc.); organic bases (alkali metal salts of alcohols (e.g., sodium methoxide, sodium ethoxide, potassium tert-butoxide), organometallic compounds, such as alkyllithium reagents (e.g., butyllithium, diisopropylaminolithium, hexamethyldisilaaminolithium), grignard reagents (e.g., methylmagnesium iodide), quaternary ammonium hydroxides, lewis bases (e.g., organophosphorus, azacyclo-carbene and azacyclo-carbene, and phosphazene superbases)); inorganic acids (sulfuric acid, hydrochloric acid, nitric acid, boric acid, carbonic acid, phosphoric acid); or organic acids (trifluoromethanesulfonic acid, trifluoroacetic acid, mellitic acid, nitrilotriacetic acid, trichloroacetic acid, trinitrobenzenesulfonic acid or Lewis acids (e.g. Al (C)6F5)3、Zn(C6F5)3、B(C6F5)3) Indium chloride)). Further preferably, the inorganic base is KOH, the organic base is 1,5, 7-triazabicyclo (4.4.0) dec-5-ene, the inorganic acid is sulfuric acid, and the organic acid is trifluoroacetic acid.
According to the present invention, the ring-opening polymerization reaction temperature is preferably 0 to 250 ℃, more preferably 80 to 110 ℃, and most preferably 100 ℃.
According to the present invention, the ring-opening polymerization reaction time is preferably 4 to 48 hours, and more preferably 6 to 12 hours.
According to the present invention, preferably, the protective gas is any one of nitrogen, helium or argon, and further preferably nitrogen.
According to the invention, the molar ratio of the sulfone-containing macrocyclic siloxane to the catalyst is preferably 10-3000: 1, more preferably 50 to 100: 1.
the reaction scheme of the above preparation method of the sulfone-containing polysiloxane according to the present invention is as follows:
Figure BDA0002062144240000031
according to the invention, the preparation method of the sulfone-containing macrocyclic siloxane comprises the following steps:
mixing a monomer with sulfydryl at two ends, a vinyl siloxane monomer at two ends and a photoinitiator benzoin dimethyl ether (DMPA), wherein the molar ratio of the monomer with sulfydryl at two ends to the monomer with vinyl siloxane at two ends to the photoinitiator is 1: 0.5-1.5: 0.01, preferably 1: 1: 0.001, carrying out step-by-step mercaptoalkene polymerization reaction under ultraviolet light for 5-30 min, preferably 15min to obtain polysiloxane containing thioether; and dissolving the thioether-containing polysiloxane in a solvent, adding tetrahydrofuran as a preferable solvent, adding oxone, reacting at the temperature of 25-100 ℃, preferably 30 ℃ for 10-48h, preferably 24h under the protection of nitrogen, and obtaining the sulfone-containing macrocyclic siloxane as a polymeric monomer of the sulfone-containing polysiloxane.
The reaction route of the preparation method of the sulfone-containing macrocyclic siloxane is as follows:
Figure BDA0002062144240000041
wherein R is1、R2The same meanings as above, and n is 2 to 10.
According to the invention, the sulfone-containing polysiloxane can be prepared into the sulfone-containing polysiloxane fiber through a spinning process. The selectable spinning processes comprise electrostatic spinning, melt spinning, wet spinning, dry and wet spinning and the like, and electrostatic spinning is preferred;
further preferably, the electrostatic spinning conditions comprise that the spinning temperature is 20-50 ℃, the environmental humidity is 20-40%, the spinning voltage is 10-25 kV, the receiving distance is 15-20 cm, and the spinning speed is 0.05-0.5 mm/min; most preferably, the spinning temperature is 30 ℃, the ambient humidity is 20%, the spinning voltage is 18kV, the receiving distance is 15cm, and the spinning speed is 0.05 mm/min.
According to the invention, the sulfone-containing polysiloxane has good degradation cycle performance.
Further, a method for recycling the degradation of sulfone-containing polysiloxanes to give the initial sulfone-containing macrocyclic siloxane monomer, comprising the steps of:
dissolving sulfone-containing polysiloxane with solvent, preferably tetrahydrofuran, adding KHSO4The reaction temperature is 25-100 ℃, preferably 30 ℃, the reaction time is 10-48h, preferably 24h, and the sulfone-containing macrocyclic siloxane monomer is obtained through degradation.
The above reaction route for recycling of degradation to sulfone-containing macrocyclic siloxane monomers is as follows:
Figure BDA0002062144240000042
the invention has not been described in detail, but is in accordance with the state of the art.
The invention has the following beneficial effects:
1. according to the invention, sulfone groups with relatively high polarity are introduced into the siloxane chain segment, so that the properties of the main chain of the siloxane chain segment are changed, and further, the crystallinity and intermolecular action of polysiloxane are improved, thus the spinnability of the polymer is improved, novel organic silicon fibers are prepared, and the problem that the existing siloxane is difficult to spin is solved.
2. The sulfone-containing polysiloxane prepared by the invention is easy to spin, has good thermal stability, and is simple and efficient in synthetic route.
3. The sulfone-containing polysiloxane can be degraded and recycled, and the utilization rate of raw materials is greatly improved.
4. The raw materials of the invention are cheap and easy to obtain, the synthetic method has simple route, and the production process has no pollution.
Drawings
FIG. 1 is a hydrogen nuclear magnetic spectrum of the macrocyclic sulfone-containing polysiloxane prepared in example 1.
FIG. 2 is a digital photograph of fibers of the sulfone-containing polysiloxane prepared in example 1.
FIG. 3 is a scanning electron micrograph of fibers of the sulfone-containing polysiloxane prepared in example 1.
FIG. 4 is a NMR spectrum of the sulfone-containing polysiloxane prepared in example 1.
FIG. 5 is a thermogravimetric analysis curve of the fibers of the sulfone-containing polysiloxane prepared in example 1.
Detailed Description
The present invention will now be described in further detail by way of specific examples, which are provided for illustration purposes and are not intended to limit the scope of the invention, in conjunction with the following drawings.
Example 1
(1) 8.6g (50mmol) of α, α' -dimercaptop-xylene, 9.2g (50mmol) of a vinyl-bis-head, and 0.2g of benzoin dimethyl ether (DMPA) were added to the round-bottom flask. After sealing, the mixture was placed under an ultraviolet lamp and stirred for reaction for 15min, and the system became viscous to obtain a crude product as a yellow viscous liquid. After drying under vacuum, a yellowish, transparent viscous liquid was obtained with a yield of 16.3g and a yield of 92%. 16.3g (46mmol) of the above viscous liquid was weighed and dissolved in a flask with tetrahydrofuran. Then, 14.1g (46mmol) of the oxidizing agent oxone was added thereto, and the reaction was stirred at room temperature for 12 hours under a nitrogen atmosphere. Thereafter, 14.1g (46mmol) of oxone was added to the system, and the reaction was stirred at room temperature for further 12 hours. After completion of the reaction, white plate-like crystals of P1OX were obtained in a yield of 8.3g and a yield of 55%.
The result of the nuclear magnetic resonance hydrogen spectrum test of the product is shown in figure 1, and as can be seen from figure 1, the corresponding attribution can be found in each peak, which indicates that the sulfone-containing macrocyclic siloxane monomer is successfully synthesized.
(2) Sulfone-containing macrocyclic siloxane monomer (2.9g, 7mmol) was dissolved in a three-necked flask containing anhydrous dimethylsulfoxide, followed by addition of KOH (39.0mg, 0.7mmol), reaction at 100 ℃ for 8h under nitrogen protection, followed by addition of benzoic acid (85.0mg, 0.7mmol) to quench the reaction and remove dimethylsulfoxide to give sulfone-containing polysiloxane as a yellow solid in 90% yield. The obtained sulfone-containing polysiloxane is easy to be drawn into fibers due to the introduction of main chain sulfone groups, and the obtained fiber photo is shown in figure 2. Meanwhile, uniform sulfone-containing polysiloxane fibers can be obtained through electrostatic spinning, and a scanning electron microscope of the spun fibers is shown in figure 3, so that the fibers are uniform, smooth in surface and good in spinnability.
The product was subjected to nmr spectroscopy, as shown in fig. 4. As can be seen from FIG. 4, the peaks can find the corresponding assignments, indicating that ring-opening polymerization has occurred to give a sulfone-containing polysiloxane.
The thermogravimetric analysis of the obtained sulfone-containing silicone fiber is shown in fig. 5. As can be seen from FIG. 5, the sulfone-containing silicone fiber of the present invention has good heat resistance, a thermal weight loss temperature of 328 ℃ and a maximum permanent temperature of 382 ℃.
(3) The sulfone-containing polysiloxane (5.3g) obtained above was taken and dissolved in a single-neck flask containing 15ml of tetrahydrofuran, followed by addition of a solution in 15ml of H2KHSO of O4(27.2g, 0.2mol), stirring at 30 ℃ for 24h to give the sulfone-containing macrocyclic siloxane monomer as a white solid in 87% yield. So that the sulfone-containing polysiloxane is successfully degraded and recycled to obtain the sulfone-containing macrocyclic siloxane monomer.
Example 2
(1) 6.1g (50mmol) of butanedithiol, 9.2g (50mmol) of a vinyl-bis-head, and 0.2g of Benzonic acid (DMPA) were charged into a round-bottomed flask. After sealing, the mixture is placed under an ultraviolet lamp and stirred for reaction for 15min, and the system becomes viscous to obtain a crude product which is colorless viscous liquid. After drying under vacuum, a yellowish, transparent viscous liquid was obtained with a yield of 14.3g and a yield of 94%. 14.1g (46mmol) of the above viscous liquid was weighed and dissolved in a flask with tetrahydrofuran. Then, 14.1g (46mmol) of the oxidizing agent oxone was added thereto, and the reaction was stirred at room temperature for 12 hours under a nitrogen atmosphere. Thereafter, 14.1g (46mmol) of oxone was added to the system, and the reaction was stirred at room temperature for 12 hours. After completion of the reaction, white plate-like crystals of P2OX were obtained in 51% yield.
(2) Sulfone-containing macrocyclic siloxane monomer (2.6g, 7mmol) was dissolved in a three-necked flask containing anhydrous dimethylsulfoxide, followed by addition of KOH (39.0mg, 0.7mmol), reaction at 100 ℃ for 8h under nitrogen, followed by addition of benzoic acid (85.0mg, 0.7mmol) to quench the reaction and remove dimethylsulfoxide to give sulfone-containing polysiloxane as a yellow solid in 93% yield.
(3) GetThe sulfone-containing polysiloxane (4.7g) obtained above was dissolved in a single-neck flask containing 15ml of tetrahydrofuran, and then dissolved in 15ml of H2KHSO of O4(27.2g, 0.2mol), stirring at 30 ℃ for 24h to give a white crystalline sulfone-containing macrocyclic siloxane in 87% yield.
Example 3
(1) 12.5g (50mmol) of 4', 4-dimercaptodiphenylsulfide, 9.2g (50mmol) of a vinyl-bis-head, and 0.2g of benzoin dicarboxylic acid (DMPA) were charged into a round-bottomed flask. After sealing, the mixture was placed under an ultraviolet lamp and stirred for reaction for 15min, and the system became viscous to obtain a crude product as a yellow viscous liquid. After drying under vacuum, a yellowish, transparent viscous liquid was obtained with a yield of 19.5g and a yield of 91%. 20.0g (46mmol) of the above viscous liquid was weighed and dissolved in a flask with tetrahydrofuran. Then, 21.1g (69mmol) of the oxidizing agent oxone was added thereto, and the reaction was stirred at room temperature for 12 hours under a nitrogen atmosphere. Thereafter, 21.1g (69mmol) of oxone was added to the system, and the reaction was further stirred at room temperature for 12 hours. After completion of the reaction, white flaky crystals were obtained in 55% yield.
(2) Sulfone-containing macrocyclic siloxane monomer (3.5g, 7mmol) was dissolved in a three-necked flask containing anhydrous dimethylsulfoxide, followed by addition of KOH (39.0mg, 0.7mmol), reaction at 100 ℃ for 8h under nitrogen, followed by addition of benzoic acid (85.0mg, 0.7mmol) to quench the reaction and remove dimethylsulfoxide to give sulfone-containing polysiloxane as a yellow solid in 89% yield.
(3) The sulfone-containing polysiloxane (6.3g) obtained above was taken and dissolved in a single-neck flask containing 15ml of tetrahydrofuran, followed by addition of a solution in 15ml of H2KHSO of O4(27.2g, 0.5mol), stirring at 30 ℃ for 24h to give the sulfone-containing macrocyclic siloxane as a white solid in 85% yield.
Comparative example 1
According to patent CN101838863B, alpha, beta-dimethoxy polydimethylsiloxane with weight-average molecular weight of about 50 ten thousand is dissolved in toluene and mixed with aminopropyl triethoxysilane, and then the mixture is subjected to polycondensation reaction at 140 ℃ for 3 hours, and the product is electrospun, so that the solidification is easy, the fiber is easy to deform and break, and the re-dissolution spinning cannot be carried out.
Comparative example 2
Reacting octamethylcyclotetrasiloxane under the catalysis of alkali glue at 110 ℃, then heating to 130 ℃ for 30min to inactivate the catalyst to obtain linear polydimethylsiloxane with the weight-average molecular weight of 70 ten thousand, and then carrying out electrostatic spinning on the polysiloxane to find that the polysiloxane has high viscosity, cannot be molded and is easy to break.
Comparative example 3
Uniformly mixing polydimethylsiloxane containing vinyl, oligosiloxane containing silicon-hydrogen bonds and 0.1% chloroplatinic acid catalyst, crosslinking at 150 ℃, and then carrying out electrospinning, wherein fibers are easy to deform and cannot be re-dissolved for spinning.
The above are only preferred embodiments of the present invention and are not intended to limit the present invention. It should be noted that, for those skilled in the art, modifications can be made without departing from the invention, and these modifications should also be construed as the scope of the invention.

Claims (7)

1.一种含砜聚硅氧烷纺丝制备得到的含砜聚硅氧烷合成纤维,其特征在于,所述含砜聚硅氧烷具有以下的结构式:1. A sulfone-containing polysiloxane synthetic fiber prepared by spinning a sulfone-containing polysiloxane is characterized in that the sulfone-containing polysiloxane has the following structural formula:
Figure 621559DEST_PATH_IMAGE001
Figure 621559DEST_PATH_IMAGE001
;
含砜聚硅氧烷的制备包括以下步骤:The preparation of sulfone-containing polysiloxane includes the following steps: 用含砜大环硅氧烷为原料,有机溶剂溶解后,在保护气体保护下,经催化剂催化,发生开环聚合反应,即得;Using sulfone-containing macrocyclic siloxane as a raw material, after dissolving in an organic solvent, under the protection of a protective gas, and catalyzed by a catalyst, a ring-opening polymerization reaction occurs to obtain; 所述的含砜大环硅氧烷,具有如下结构:The described sulfone-containing macrocyclic siloxane has the following structure:
Figure 870138DEST_PATH_IMAGE002
Figure 870138DEST_PATH_IMAGE002
;
其中:R1为直链或支链结构的亚烷基、亚芳基、亚烷基醚或亚二苯硫醚;Wherein: R 1 is an alkylene group, an arylene group, an alkylene ether or a diphenylene sulfide of a linear or branched structure; R2为氢、甲基、乙基、苯基或三氟丙基,不同位置的R2取代基相同或者不同;R 2 is hydrogen, methyl, ethyl, phenyl or trifluoropropyl, and the R 2 substituents at different positions are the same or different; n为2~10,m为10~3000;n is 2~10, m is 10~3000; 含砜聚硅氧烷的制备条件满足如下任意一种或多种:The preparation condition of sulfone-containing polysiloxane satisfies any one or more of the following: 所述的有机溶剂为二甲基亚砜、N,N-二甲基甲酰胺、N,N-二甲基乙酰胺、N-甲基吡咯烷酮、四氢呋喃、1,4-二氧六环中的一种;Described organic solvent is in dimethyl sulfoxide, N,N-dimethylformamide, N,N-dimethylacetamide, N-methylpyrrolidone, tetrahydrofuran, 1,4-dioxane. A sort of; 所述的催化剂为无机碱、有机碱、无机酸或有机酸;Described catalyst is inorganic base, organic base, inorganic acid or organic acid; 开环聚合反应的温度为0~250℃;The temperature of the ring-opening polymerization reaction is 0~250℃; 开环聚合反应的时间为4~48h;The time of the ring-opening polymerization reaction is 4~48h; 所述的保护气体为氮气、氦气或氩气的任意一种;Described protective gas is any one of nitrogen, helium or argon; 含砜大环硅氧烷、催化剂的摩尔比为10~3000:1。The molar ratio of sulfone-containing macrocyclic siloxane and catalyst is 10-3000:1.
2.根据权利要求1所述的含砜聚硅氧烷纺丝制备得到的含砜聚硅氧烷合成纤维,其特征在于,当 R1为亚烷基或亚烷基醚时,R1为C1~C10的亚烷基或亚烷基醚。2. The sulfone-containing polysiloxane synthetic fiber prepared by spinning the sulfone-containing polysiloxane according to claim 1 is characterized in that, when R 1 is an alkylene group or an alkylene ether, R 1 is C1-C10 alkylene or alkylene ether. 3.根据权利要求1所述的含砜聚硅氧烷纺丝制备得到的含砜聚硅氧烷合成纤维,其特征在于,R1为亚丁基、亚3,6-二氧-1,8-辛基、亚1,4-苯二甲基或亚二苯硫醚基。3 . The sulfone-containing polysiloxane synthetic fiber prepared by spinning the sulfone-containing polysiloxane according to claim 1 , wherein R 1 is butylene, 3,6-dioxo-1,8 -Octyl, 1,4-xylylene or diphenylene sulfide. 4.根据权利要求1所述的含砜聚硅氧烷纺丝制备得到的含砜聚硅氧烷合成纤维,其特征在于,含砜聚硅氧烷结构式中:4. The sulfone-containing polysiloxane synthetic fiber prepared by spinning of sulfone-containing polysiloxane according to claim 1 is characterized in that, in the sulfone-containing polysiloxane structural formula: R1为亚丁基、亚3,6-二氧-1,8-辛基、亚1,4-苯二甲基或亚二苯硫醚基;R 1 is butylene, 3,6-dioxo-1,8-octylene, 1,4-xylylene or diphenylene sulfide; R2为氢、甲基、乙基、苯基或三氟丙基,不同位置的R2取代基相同或者不同;R 2 is hydrogen, methyl, ethyl, phenyl or trifluoropropyl, and the R 2 substituents at different positions are the same or different; n为3~9,m为50~2500。n ranges from 3 to 9, and m ranges from 50 to 2500. 5.根据权利要求1所述的含砜聚硅氧烷纺丝制备得到的含砜聚硅氧烷合成纤维,其特征在于,所述的含砜大环硅氧烷,具有如下结构:5. The sulfone-containing polysiloxane synthetic fiber prepared by spinning of sulfone-containing polysiloxane according to claim 1 is characterized in that, the sulfone-containing macrocyclic siloxane has the following structure:
Figure 530926DEST_PATH_IMAGE003
Figure 530926DEST_PATH_IMAGE003
.
6.根据权利要求1所述的含砜聚硅氧烷纺丝制备得到的含砜聚硅氧烷合成纤维,其特征在于,所述的无机碱为锂、钠、钾、铵、钡的氢氧化物;6 . The sulfone-containing polysiloxane synthetic fiber prepared by spinning the sulfone-containing polysiloxane according to claim 1 , wherein the inorganic base is the hydrogen of lithium, sodium, potassium, ammonium and barium. 7 . oxide; 所述的有机碱为醇的碱金属盐、烷基锂试剂、格氏试剂或氢氧化季铵盐;Described organic base is the alkali metal salt of alcohol, alkyl lithium reagent, Grignard reagent or quaternary ammonium hydroxide salt; 所述的无机酸为硫酸、盐酸、硝酸、硼酸、碳酸或磷酸;Described inorganic acid is sulfuric acid, hydrochloric acid, nitric acid, boric acid, carbonic acid or phosphoric acid; 所述的有机酸为三氟甲磺酸、三氟乙酸、苯六甲酸、氮硫方酸、三氯乙酸或三硝基苯磺酸。The organic acid is trifluoromethanesulfonic acid, trifluoroacetic acid, mellitic acid, nitrogen-sulfur-squaric acid, trichloroacetic acid or trinitrobenzenesulfonic acid. 7.根据权利要求1所述的含砜聚硅氧烷纺丝制备得到的含砜聚硅氧烷合成纤维,其特征在于,所述的含砜大环硅氧烷按如下方法制备得到:7. The sulfone-containing polysiloxane synthetic fiber prepared by spinning of sulfone-containing polysiloxane according to claim 1 is characterized in that, the sulfone-containing macrocyclic siloxane is prepared as follows: 将两端巯基的单体、两端乙烯基硅氧烷单体与光引发剂安息香双甲醚混合,三者的摩尔比为1:0.5~1.5:0.01,在紫外光下发生巯烯逐步聚合反应,反应时间为5~30min,得到含硫醚的聚硅氧烷;再将含硫醚的聚硅氧烷用溶剂溶解后,加入过硫酸氢钾复合盐,反应温度为25-100 ℃,反应10-48h,得到含砜大环硅氧烷,作为含砜聚硅氧烷的聚合单体。The monomer with mercapto groups at both ends, the vinyl siloxane monomer at both ends and the photoinitiator benzoin dimethyl ether are mixed, and the molar ratio of the three is 1:0.5~1.5:0.01, and the mercaptoene is gradually polymerized under ultraviolet light. Reaction, the reaction time is 5~30min, obtains the polysiloxane containing thioether; after dissolving the polysiloxane containing thioether with solvent again, adding potassium hydrogen persulfate composite salt, the reaction temperature is 25-100 ℃, The reaction is carried out for 10-48h to obtain a sulfone-containing macrocyclic siloxane, which is used as a polymerized monomer of the sulfone-containing polysiloxane.
CN201910408768.5A 2019-05-16 2019-05-16 A kind of sulfone-containing polysiloxane fiber and preparation method thereof Active CN110144045B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910408768.5A CN110144045B (en) 2019-05-16 2019-05-16 A kind of sulfone-containing polysiloxane fiber and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910408768.5A CN110144045B (en) 2019-05-16 2019-05-16 A kind of sulfone-containing polysiloxane fiber and preparation method thereof

Publications (2)

Publication Number Publication Date
CN110144045A CN110144045A (en) 2019-08-20
CN110144045B true CN110144045B (en) 2021-07-30

Family

ID=67594268

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910408768.5A Active CN110144045B (en) 2019-05-16 2019-05-16 A kind of sulfone-containing polysiloxane fiber and preparation method thereof

Country Status (1)

Country Link
CN (1) CN110144045B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110144045B (en) * 2019-05-16 2021-07-30 山东大学 A kind of sulfone-containing polysiloxane fiber and preparation method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2468798A1 (en) * 2009-08-20 2012-06-27 Central Glass Company, Limited Solid electrolyte membrane for fuel cell and process for producing same
CN110144045A (en) * 2019-05-16 2019-08-20 山东大学 A kind of sulfone-containing polysiloxane fiber and its preparation method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2468798A1 (en) * 2009-08-20 2012-06-27 Central Glass Company, Limited Solid electrolyte membrane for fuel cell and process for producing same
CN110144045A (en) * 2019-05-16 2019-08-20 山东大学 A kind of sulfone-containing polysiloxane fiber and its preparation method

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
From Polymer to Monomer: Cleavage and Rearrangement of Si-O-Si Bonds after Oxidation Yielded an Ordered Cyclic Crystallized Structure;Yujing Zuo等;《chemistry A European Journal Communication》;20150617;第21卷;第10972-10977页 *
Yujing Zuo等.From Polymer to Monomer: Cleavage and Rearrangement of Si-O-Si Bonds after Oxidation Yielded an Ordered Cyclic Crystallized Structure.《chemistry A European Journal Communication》.2015,第21卷第10972-10977页. *

Also Published As

Publication number Publication date
CN110144045A (en) 2019-08-20

Similar Documents

Publication Publication Date Title
US6774202B2 (en) Polyorganosilsesquioxane and process for preparing the same
CN103665863B (en) Containing the compositions of thermosetting resin of double-tower type epoxy silsesquioxane
CN101585917A (en) Polybenzoxazine precursor and preparing method thereof
CN107573496B (en) A kind of furandicarboxylic acid polyester containing benzoxazine structure and preparation method and application thereof
CN115536847B (en) A kind of liquid vinyl functionalized cage oligomeric silsesquioxane modified by low molecular weight polysiloxane and its preparation method
CN110144045B (en) A kind of sulfone-containing polysiloxane fiber and preparation method thereof
CN110540648A (en) Organosiloxane containing benzocyclobutene group and its preparation and application
CN113429358B (en) Synthesis method of molecular glass and application of molecular glass as high-frequency low-dielectric-constant material
CN108395527A (en) A kind of azobenzene polyether ester segmented copolymer elastomer and preparation method thereof with photo-deformable performance
Fan et al. A transparent cyclo-linear polyphenylsiloxane elastomer integrating high refractive index, thermal stability and flexibility
CN119899386A (en) A polyborosiloxane type damping additive for phenyl silicone rubber and its preparation method and application
CN1314731C (en) Polysiloxane benzoxazine of polysiloxane at aryne end capping and preparation method
KR101130262B1 (en) Preparation of Polyethyleneterephthalate Nanocomposite Fiber with Enhanced Modulus Retention at High Temperature
CN103526327B (en) High-modulus low-shrinkage creep-resistant polyester industrial yarn and preparation method thereof
WO2014077412A2 (en) Photo-dimerization functional group-containing organopolysiloxane, activation energy radiation-curable organopolysiloxane composition, and cured product thereof
CN110437449A (en) The method that a kind of ring-opening polymerisation of cyclosiloxane original position prepares polysiloxane film
CN117801275B (en) A method for preparing high temperature resistant and wear resistant polymer material
TWI823177B (en) Thermo-curable epoxy composition, epoxy thermoset prepared thereby, method for aminolysis-degrading epoxy thermoset, and aminolysis-degradable carbon fiber composite
CN103556288B (en) High-strength car mould industrial yarn of a kind of creep resistant polyester and preparation method thereof
CN110698674A (en) A kind of fluorine-containing MDQ type silicone resin which can be cured by chemical crosslinking and preparation method thereof
CN1563152A (en) Polymer type phosphatic fire retardant, preparation method and usage
CN1482158A (en) Soluble and controllable cross-linked polyaryletherketone high-performance materials and their preparation
US3422060A (en) Silicon-,nitrogen- and oxygen-containing high temperature resistant polymers and process
KR20090058651A (en) Polyethylene terephthalate nanocomposite fiber with excellent modulus retention at high temperature and manufacturing method thereof
Yu et al. Synthesis and Characterization of Novel Soluble Aromatic Polyesters with Pendant Cyano Groups

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant