WO2007091466A1 - 液晶ポリマーの改質方法 - Google Patents
液晶ポリマーの改質方法 Download PDFInfo
- Publication number
- WO2007091466A1 WO2007091466A1 PCT/JP2007/051612 JP2007051612W WO2007091466A1 WO 2007091466 A1 WO2007091466 A1 WO 2007091466A1 JP 2007051612 W JP2007051612 W JP 2007051612W WO 2007091466 A1 WO2007091466 A1 WO 2007091466A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- acid
- mol
- liquid crystal
- crystal polymer
- laser
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/28—Treatment by wave energy or particle radiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
- B29C71/04—After-treatment of articles without altering their shape; Apparatus therefor by wave energy or particle radiation, e.g. for curing or vulcanising preformed articles
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/88—Post-polymerisation treatment
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/12—Chemical modification
- C08J7/123—Treatment by wave energy or particle radiation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/12—Chemical modification
- C08J7/16—Chemical modification with polymerisable compounds
- C08J7/18—Chemical modification with polymerisable compounds using wave energy or particle radiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
- B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
- B29C2035/0838—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using laser
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/24—Condition, form or state of moulded material or of the material to be shaped crosslinked or vulcanised
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/06—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from hydroxycarboxylic acids
- C08G63/065—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from hydroxycarboxylic acids the hydroxy and carboxylic ester groups being bound to aromatic rings
Definitions
- the present invention relates to a method for modifying a liquid crystal polymer.
- Liquid crystal polymer is liquid and is oriented in one direction when a shearing force is applied to facilitate the entanglement of molecules, and when cooled, the molecules solidify while being oriented, resulting in high strength and high elastic modulus. It is done.
- wholly aromatic polyamides are known as fibers and films with high strength, high elastic modulus, and excellent heat resistance.
- this is a solution type liquid crystal that dissolves in a solvent to form a liquid crystal, and there is a drawback that fibers and films cannot be made except by solution molding.
- wholly aromatic polyesters are melt-type liquid crystals that form liquid crystals in a molten state, and have a great advantage that they can be melt-molded.
- it is necessary to keep the melt viscosity low, and the degree of polymerization cannot be sufficiently increased before molding. For this reason, there is a limit to the improvement in physical strength compared to solution type liquid crystals.
- a method for increasing the degree of polymerization by solid-phase polymerization after molding is also known, but it requires high-temperature treatment under vacuum, which increases the production cost.
- a femtosecond laser generally refers to a laser having a laser pulse width of several to several hundred femtoseconds.
- the femtosecond laser has a very short pulse width. Since the optical pulse is confined in a very short time of 10-15 seconds, the output power in one pulse is high.
- energy can be instantaneously injected into the object before heat conduction occurs. For this reason, it is mainly used for fine processing where the area around the irradiation position is not easily damaged.
- Patent Document 1 describes that when a polyester is melt-spun, the polyester emitted from the spinneret is irradiated with a laser at a predetermined energy density.
- laser irradiation is used as a heating means for increasing the yarn temperature after discharge and reducing the yarn.
- the spinning temperature is relatively low to prevent thermal degradation of the polyester. As a result, the stretchability of the fiber is improved.
- Patent Document 2 describes that a polymer material is irradiated with an ultrashort pulse laser to change the orientation direction of the polymer.
- Patent Document 3 describes that a plastic material is irradiated with an ultrashort pulse laser to change the plastic structure. In these methods, it has been confirmed that the optical properties of the polymer, such as the orientation and refractive index of the liquid crystal, have changed.
- Patent Document 1 JP 2004-324017
- Patent Document 2 JP 2003-253019
- Patent Document 3 JP 2004-8881
- the present invention solves the above-described conventional problems, and the object of the present invention is to provide a liquid crystal polymer having improved physical strength (for example, mechanical strength) as compared with a conventional liquid crystal polymer. It is an object of the present invention to provide a reforming method.
- the present invention provides a method for modifying a liquid crystal polymer, which includes a step of irradiating the liquid crystal polymer with a laser having a pulse width of 10 to 12 seconds or less, whereby the above object is achieved.
- the modified liquid crystal polymer of the present invention (especially the melt type) has a substantially improved degree of polymerization compared to the conventional one, and it is estimated that a crosslinked structure is present. "Irradiation intensity" is equivalent to "average output”.) By appropriately increasing the tensile strength and elastic modulus, It was observed to improve.
- This modified liquid crystal polymer fiber has a high tensile strength at break and an initial Young's modulus, and at the same time, there is a possibility that a bending strength and a compressive elastic modulus are also increased.
- fibers with improved characteristics for example, it can be used in place of steel cords used in carcass materials for radial tires for passenger cars, light trucks, especially heavy trucks. It is possible to improve wrinkles and the accompanying performance, and improve durability (flexural fatigue).
- the physical strength and the longitudinal and lateral directions are obtained by optimally irradiating the film in the molten state before the die exit, or in the molten or semi-molten state after the die exit ( It is conceivable to improve the uniformity of strength in the flow direction: MD and the direction perpendicular to this: TD).
- this modification method has the potential to make conventional liquid crystal polymers difficult to transmit electromagnetic waves in the high frequency (THz) region. It is thought that a film can be created.
- the liquid crystal polymer to be modified may be a solution type or a melt type. However, the reforming effect that improves the degree of polymerization and physical strength is remarkable for the melt type.
- a melt-type liquid crystal polymer is a polymer that forms an anisotropic melt phase. It is called Ma.
- the properties of the anisotropic molten phase can be confirmed by a conventional polarization inspection method using an orthogonal polarizer. More specifically, the anisotropic molten phase can be confirmed by using a Leitz polarizing microscope and observing a sample placed on a Leitz hot stage under a nitrogen atmosphere at a magnification of 40 times.
- the polymer is optically anisotropic. In other words, light is transmitted when inspected between orthogonal polarizers. If the sample is optically anisotropic, polarized light is transmitted even if it is stationary.
- liquid crystal polymer for example, an aromatic hydroxycarboxylic acid, an aromatic dicarboxylic acid, an aromatic diol, an aromatic hydroxyamine, an aromatic diamine, an aromatic amino carboxylic acid, or the like was selected.
- aromatic hydroxycarboxylic acid examples include 4-hydroxybenzoic acid, 2-hydroxy-3-naphthoic acid, 2-hydroxy-6-naphthoic acid, 2-hydroxy-7-naphthoic acid, 3-methyl-4-hydroxybenzoic acid, 3, 5—Dimethyl-4-hydroxybenzoic acid, 2, 6 Dimethyl-4-hydroxybenzoic acid, 2 Hydroxy-5 methyl —6 Naphthoic acid, 2 Hydroxy-1-methoxy-6-naphthoic acid, 3 Chloroquinone 4 Hydroxybenzoic acid, 2 Chloro- 4-hydroxybenzoic acid, 2, 3 dichloro-4-hydroxybenzoic acid, 3 bromo 4-hydroxybenzoic acid, 2 hydroxy-5 chloro-6- naphthoic acid, 2 hydroxy-1 7 chlorohexa-6 naphthoic acid, 2 hydroxy-1 5, 7 dichloro Fragrances such as 1-naphthoic acid, 4-hydroxy-1,4-biphenylcarboxylic acid, 3-
- Hydro Kishikarubon acid and its alkyl, an alkoxy or halogen-substituted derivatives include ester-forming derivatives thereof as well.
- 4-hydroxybenzoic acid and 2-hydroxy-6-naphthoic acid are preferred because they are easy to adjust the properties and melting point of the polymer.
- aromatic dicarboxylic acid examples include terephthalic acid, chloroterephthalic acid, dichloroterephthalic acid, bromoterephthalic acid, methylterephthalic acid, dimethylterephthalic acid, ethylterephthalic acid, methoxyterephthalic acid, and ethoxyterephthalic acid.
- Acid isophthalic acid Acid, 4, 4, monobienoresin, norevonic acid, 3, 4, monobienoresin, norevonic acid, 4, 4, 1, monophenol dicarboxylic acid, 2, 6 naphthalene dicarboxylic acid, 2, 7 naphthalene dicarboxylic acid 1, 6 Naphthalene dicarboxylic acid, diphenyl ether 4, 4, dicarboxylic acid, diphenoxybutane 4, 4, dicarboxylic acid, diphenol 4, 4, dicarboxylic acid, diphenol ether 3, 3, dicarboxylic acid , Aromatic dicarboxylic acids such as diphenol-3,3, -dicarboxylic acid, and alkyl, alkoxy or nitro, rogen-substituted products thereof, and ester-forming derivatives thereof.
- Aromatic dicarboxylic acids such as diphenol-3,3, -dicarboxylic acid, and alkyl, alkoxy or nitro, rogen-substituted products thereof, and este
- terephthalic acid and 2, 6 naphthalenedicarboxylic acid are preferable because the liquid crystal polymer from which terephthalic acid and 2,6 naphthalenedicarboxylic acid can be easily adjusted to an appropriate level of mechanical properties, heat resistance, melting point temperature, and moldability.
- aromatic diol examples include, for example, noduloquinone, chlorohydrin quinone, methylhydroquinone, 1-butylhydroquinone, phenylhydroquinone, methoxyhydroquinone, phenoxyhydroquinone, resorcin, 4-chlororesorcin, 4 —Methylresorcin, 4,4, -dihydroxybiphenyl, 4,4, -dihydroxyterphenyl, 2,6 naphthalenediol, 1,6 naphthalenediol, 2,7 naphthalenediol, 4,4'-dihydroxydiphenyl ether , Aromatic diols such as bis (4-hydroxyphenoxy) ethane, 3, 3, monodihydroxybiphenyl, 3,3'-dihydroxydiphenyl ether, 2,2 bis (4-hydroxyphenyl) methane, and alkyls thereof , Alkoxy or halogen
- aromatic hydroxyamine, aromatic diamine, and aromatic aminocarboxylic acid include 4-aminophenol, N-methyl 4-aminophenol, 3-aminophenol, 3-methyl 4 Aminophenol, 4 amino-1-naphthol, 4 amino-4, —hydroxydiphenyl, 4-amino-4 monohydroxydiphenyl ether, 4-amino-4′-hydroxydiphenol methane, 4-aminoamino 4 , Monohydroxydiphenylsulfide, 4, 4, 1, Diaminodiphenylsulfone, and other aromatic hydroxyamines, 1,4 phenylenediamine, N-methyl 1,4 phenylenediamine, N, ⁇ '-dimethyl mono 1 , 4 Fenylene Diamine, 4,4'-Diaminodiphenylsulfide (Thiodialine), 2,5 Diaminotoluene, 4,4 'Ethylenedianiline, 4,4'-Diaminodiphenoxetane, 4,
- liquid crystal polymer does not impair the object of the present invention! /
- monomer units for example, alicyclic dicarboxylic acids, aliphatic diols, alicyclic diols, aromatic mercaptocarboxylic acids. Acids, aromatic dithiols, aromatic mercaptophenols and the like may be copolymerized.
- alicyclic dicarboxylic acid examples include, for example, hexahydroterephthalic acid, trans 1,4-cyclohexanediol, cis 1,4-cyclohexane.
- Diol trans 1,4-cyclohexane dimethanol, cis 1,4-cyclohexane dimethanol, trans 1,3 cyclohexane diol, cis 1,2 cyclohexane diol, trans 1,3 cyclohexane dimethanol,
- Examples thereof include linear or branched aliphatic diols such as ethylene glycol, 1,3 propanediol, 1,4 butanediol and neopentyldaricol, and ester-forming derivatives thereof.
- aromatic mercaptocarboxylic acid, aromatic dithiol, aromatic dithiol, and aromatic mercaptophenol include, for example, 4 mercaptobenzoic acid, 2 mercapto 6 naphthoic acid, 2 mercapto 7 naphthoic acid, benzene 1, 4-dithiol, benzene 1,3 dithiol, 2,6 naphthalene-dithiol, 2,7 naphthalene-dithiol, 4 mercaptophenol, 3-mercaptophenol, 6-mercaptophenol, 7-mercaptophenol, and their ester-forming derivatives Can be mentioned.
- preferable liquid crystal polymers include those having the following monomer structural unit forces.
- the melt acidolysis method is an aromatic hydroxycarboxylic acid, an aromatic dicarboxylic acid, an aromatic diol, an aromatic hydroxyamine, an aromatic diamine, an aromatic aminocarboxylic acid, or the like.
- the monomer is first heated to form a molten solution of the reactant and then the reaction is carried out to obtain a molten polymer.
- a vacuum may be applied at the final stage of the condensation to facilitate removal of by-product volatiles (specifically, acetic acid, water, etc.).
- the slurry polymerization method is a method in which a monomer is reacted in a heat exchange medium, and the polymer is obtained in a state suspended in the heat exchange medium.
- the monomer containing a hydroxyl group and a Z or amino group in the monomer used is preferably a low-grade fatty acid ester (preferably Is preferably subjected to the reaction as a acetyl group), or a lower fatty acid anhydride (preferably acetic anhydride) is simultaneously added to the system at the time of polymerization.
- a low-grade fatty acid ester preferably Is preferably subjected to the reaction as a acetyl group
- a lower fatty acid anhydride preferably acetic anhydride
- a catalyst may be used as needed during the reaction.
- the catalyst used as necessary include, for example, dialkyl stanoxide (eg, dibutyl stanoxide); organotin compounds such as diaryl stanoxide; titanium dioxide, trioxide Organotitanium compounds such as antimony, alkoxy titanium silicates, titanium alkoxides; alkali and alkaline earth metal salts of carboxylic acids (eg potassium acetate, sodium acetate, zinc acetate); Lewis acids (eg BF), halogenated hydrogen (
- gaseous acid catalysts such as HC1
- the proportion of the catalyst used is preferably 0.5 ppm to 20 wt%, more preferably 1 ppm to 10 wt%, based on the weight of the monomer.
- the liquid crystal polymer used in the molding method of the present invention has a melting point force measured by a differential scanning calorimeter, preferably 250 to 400 ° C., more preferably 270 to 350, because of the balance between heat resistance and moldability. The one in the range of ° C is desirable.
- Modification is performed by irradiating a powerful liquid crystal polymer with a femtosecond laser.
- the liquid crystal polymer to be irradiated may have any form. For example, a shape formed into a fiber shape, a fine particle shape, a plate shape, a film shape, or the like, or a shape in which a solution and a melt are formed into a film shape or a fine particle shape is preferable.
- As the molding method an injection molding method, an extrusion molding method, a melt spinning method, or the like may be used.
- a molded body obtained by these methods may be used as an irradiation target.
- the irradiation spot diameter of the femtosecond laser is not particularly limited, and the size of the target change portion It can be appropriately selected according to the type of the change, the degree of the change, the size, numerical aperture, or magnification of the lens.
- the diameter is 50 / zm or less (preferably about 0.1 to about LO / zm). Range power can also be selected.
- a line area of, for example, about 1 mm wide and about 5 mm long can be selected.
- the femtosecond laser here refers to an ultrashort pulse laser having a pulse width of 10 to 12 seconds or less.
- a pulsed laser with a pulse width of 1 X 10_ 15 seconds to 1 X 10_ 12 seconds, preferably 10 X 10_ 15 seconds to 500 X 10_ 15 seconds, more preferably 50 X 10_ 15 seconds to 300 X 10_ 15 seconds. That's fine.
- the femtosecond laser can be obtained, for example, by reproducing and amplifying a laser using a titanium 'sapphire crystal as a medium, an erbium or ytterbium doped quartz fiber laser, or a dye laser.
- the wavelength of the femtosecond laser is appropriately selected from 260 to 800 nm, for example. Further, the number of repetitions of the femtosecond laser is selected from the range of 1 ⁇ to 80 ⁇ , for example, and is generally about 10 Hz to 500 kHz.
- the average output or irradiation energy of the femtosecond laser is not particularly limited, and can be appropriately selected according to the type and state of the object. In consideration of the condensing means to be used, it is preferable to adjust the range so that the condensing part of the irradiation object does not blur.
- the average output is 0.06 to 0.16 m.
- W preferably 0.08-0.14mW
- converting the irradiation light into a line shape using a cylindrical lens, and condensing and irradiating a line area of about lmm wide and about 5mm long Adjust to 100-800mW, preferably ⁇ 300-700mW.
- the pressure was reduced to lOOtorr in 90 minutes, and when the polymerization reaction was reached for 10 minutes under lOOtorr, the predetermined stirring torque was reached, so the polymerization tank was sealed and the inside of the polymerization tank was pressurized to 0. IMPa with nitrogen gas to react. finished.
- the valve at the bottom of the polymerization tank is opened, the contents of the polymerization tank are pulled out into a strand shape through a die, and the strand is sent to a cutter by a water-cooled conveyor installed immediately below the polymerization tank, and cut into a pellet shape. To obtain polymer pellets.
- melt viscosity measuring device (“Cyapyrograph 1A” manufactured by Toyo Seiki Co., Ltd.), the viscosity of the synthesized rosin was measured at a temperature of 320 ° C and a shear rate of 10 3 s _1 using a 0.7 mm x 10 mm capillary. It was measured. Thus, the melt viscosity measured at 320 ° C. was 22 Pa ′s.
- the sample was cooled to room temperature under a temperature drop condition of 20 ° CZ, and the temperature at the peak top of the exothermic peak observed at that time was defined as the crystallization temperature (Tc) of the resin, and again 20 ° C. Observe the endothermic peak when measured under the temperature rising condition for the CZ component, and change the temperature indicating the peak top to The melting point crystal melting temperature (Tm) of reester rosin was used. Thus, the crystal melting temperature measured by the differential scanning calorimeter was 280 ° C.
- the LCP synthesized in the preparation example was LCP with a length of 89 mm, a width of 54 mm, and a thickness of 0.8 mm at a cylinder temperature of 300 ° C. using an injection molding machine (“UH1000-110” manufactured by Nissei Sewa Kogyo Co., Ltd.). A plate was formed.
- FIG. 1 is a photograph showing the appearance of an LCP plate with a femtosecond laser on the surface. This laser ablation mechanism is used to produce modified liquid crystal polymer fine particles (nanoparticles) and deposit them on the surface of the target material to create an organic thin film of modified liquid crystal polymer. It can be established. Also, by using this manufacturing method, it becomes possible to create new organic electronics materials from liquid crystal polymers and other organic substances.
- the LCP synthesized in the preparation example was applied to Toyo Seiki's Laboplast Mill 100C100 equipped with a T-die with a die width of 150 mm and a compression ratio of 2.0 and a cylinder temperature of 300 ° C and a die temperature of 3 mZ. A film with a thickness of about 50 m was obtained while winding in minutes.
- Fig. 2 shows a spectrum showing the GPC measurement results for the modified and unmodified parts of LCP. It is. The curve a indicating the reformed portion tends to be distributed in a direction in which the molecular weight is higher than the curve b indicating the unmodified portion.
- the average molecular weight calculation results are shown in Table 1.
- the number average molecular weight (Mn) of the part subjected to the modification treatment is about 15% higher than that of the part not subjected to the modification treatment. Hardness is expected to improve.
- Example 2 Place the LCP film obtained in Example 2 (about 12mm X 12mm, plate thickness 50 ⁇ m) on the glass substrate, and heat it to about 320 ° C (initial heating rate 40 ° CZmin) on the hot stage. It was in a molten state.
- the surface of the melted LCP film is focused and irradiated with an ultrashort pulse laser with a 5x objective lens (condensation area: circle with a diameter of about 50 ⁇ m) Area). Irradiation was performed by adjusting the average power within a range where laser ablation did not occur.
- Modified LCP and modified! /, N! /, LCP was formed into a film, and solid state NMR measurement was performed. Table 2 shows the measurement conditions.
- Fig. 3 is a CCP / MAS spectrum of the modified LCP film (central part).
- Figure 4 shows the 13 CCPZMAS spectrum of the LCP film after modification! In the spectrum of Fig. 3, peak c, which may represent a crosslinked structure, was observed.
- the modified LCP film has a larger value, and the molecular mobility of the modified LCP film is reduced. The existence of the structure was suggested.
- FIG. 5 is a hydrogen nucleus TH plot of the modified LCP film (central part).
- FIG. 6 is a hydrogen nucleus TH plot of the LCP film after the reforming treatment.
- Fig. 7 is a contact time dependency plot (130 ppm) of the modified LCP film (center portion).
- Figure 8 is a contact time dependence plot (13 Oppm) for an unmodified LCP film. According to these plots, the time constant of the contact time is 22.8 msec for the modified LCP film and 75 msec for the unmodified LCP film, and the time constant of the modified LCP film is the modified treatment. Not smaller than that of LCP film. This indicates that there is a crosslinked structure in the modified LCP film.
- the modified LCP has a cross-linked structure, and as a result, the degree of polymerization is increased, and compared with the LCP not subjected to the modification treatment, the tensile strength, elastic modulus, impact strength, Hardness is considered to have improved.
- Example 2 To prevent welding, place 5 sheets of LCP film (width approx. LOmm x length approx. 40 mm, plate thickness approx. 50 m) obtained in Example 2 on the glass substrate. It was heated to about 380 ° C on a hot stage to be in a molten state.
- LCP film width approx. LOmm x length approx. 40 mm, plate thickness approx. 50 m
- the LCP film is positioned with respect to the light source so that the length direction of the light collecting portion and the length direction of the LCP film are substantially perpendicular to each other. Therefore, the LCP film was moved relative to the light source so that it was scanned once.
- the average power of the ultrashort pulse laser was changed to 50mW, 100mW, 300mW, and 500mW for each sample.
- FIG. 9 is a graph plotting the initial Young's modulus against the irradiation intensity (average output), and FIG. 10 is a graph plotting the breaking strength against the irradiation intensity. As these graph power and irradiation intensity increased, the initial Young's modulus and the breaking strength tended to increase.
- the irradiation conditions were optimized for the molten fiber before the nozzle exit of melt spinning, or the molten or semi-molten fiber after the nozzle exit in the molding case for fiberization of liquid crystal polymer.
- the degree of polymerization can be increased and the physical strength can be improved by utilizing a non-thermal photochemical reaction.
- a process for increasing the degree of polymerization by solid-phase polymerization by heat treatment after molding that is, a high-temperature treatment process under vacuum is unnecessary. There is a point.
- This modified liquid crystal polymer fiber may have a high tensile strength at break and an initial Young's modulus, as well as a high bending strength and compressive modulus.
- fibers with improved characteristics for example, it can be used in place of steel cords used in carcass materials for radial tires for passenger cars, light trucks, especially heavy trucks. It is possible to improve wrinkles and the accompanying performance, and improve durability (flexural fatigue).
- Coherent Ti sapphire laser (wavelength: 780 nm, repetition rate: 200 kHz) on the surface of the LCP film obtained in Example 2 (width: about 10 mm ⁇ length: about 40 mm, plate thickness: about 50 m) With a pulse width of 150 femtoseconds and an average output of 500 mW), a cylindrical lens is used to convert the ultrashort pulse laser light into a line shape (condensed area: width approximately lmm x length approximately 5 mm line area) did.
- the LCP film is positioned with respect to the light source so that the length direction of the light collecting portion and the length direction of the LCP film are substantially perpendicular to each other. Therefore, the LCP film was moved relative to the light source so that it was scanned once.
- FIG. 11 is a spectrum showing the result of terahertz spectrum measurement performed on the irradiated film.
- Figure 12 is a spectrum showing the results of measuring the terahertz spectrum for an unirradiated film.
- Figure 13 is a spectrum showing the difference obtained by subtracting the spectrum for the unirradiated film from the vector for the irradiated film.
- the modification method of the present invention has the possibility of imparting high-frequency (THz) region electromagnetic wave-preventing properties to conventional liquid crystal polymer films. It can be considered that a heat-resistant film excellent in dielectric loss) can be provided.
- FIG. 1 is a photograph showing the appearance of an LCP plate whose surface is irradiated with a femtosecond laser.
- FIG. 2 Spectrum showing the GPC measurement results for the modified and unmodified LCP parts.
- FIG. 5 Hydrogen nucleus TH plot of modified LCP film (center).
- FIG. 8 Contact time dependence plot (130 ppm) of LCP film without modification treatment.
- FIG. 9 is a graph plotting initial Young's modulus against irradiation intensity in a LCP film tensile test.
- FIG. 11 A spectrum showing the result of Terahertz spectroscopic measurement of the irradiated LCP film.
- FIG. 12 A spectrum showing the result of terahertz spectroscopic measurement of an unirradiated LCP film.
- FIG. 13 is a spectrum showing the difference obtained by subtracting the spectrum of the unirradiated film from the spectrum of the LCP film after irradiation.
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Toxicology (AREA)
- Polyesters Or Polycarbonates (AREA)
- Treatments Of Macromolecular Shaped Articles (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007557800A JP4208941B2 (ja) | 2006-02-10 | 2007-01-31 | 液晶ポリマーの改質方法 |
CN2007800050687A CN101384651B (zh) | 2006-02-10 | 2007-01-31 | 液晶聚合物的改性方法 |
AU2007213255A AU2007213255B2 (en) | 2006-02-10 | 2007-01-31 | Method of modifying liquid crystal polymers |
US12/223,695 US7608371B2 (en) | 2006-02-10 | 2007-01-31 | Method of modifying liquid crystal polymers |
EP07707798.0A EP1983020B1 (en) | 2006-02-10 | 2007-01-31 | Method for modification of liquid crystal polymer |
CA2641808A CA2641808C (en) | 2006-02-10 | 2007-01-31 | Method of modifying liquid crystal polymers |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006-033899 | 2006-02-10 | ||
JP2006033899 | 2006-02-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007091466A1 true WO2007091466A1 (ja) | 2007-08-16 |
Family
ID=38345069
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/051612 WO2007091466A1 (ja) | 2006-02-10 | 2007-01-31 | 液晶ポリマーの改質方法 |
Country Status (8)
Country | Link |
---|---|
US (1) | US7608371B2 (ja) |
EP (1) | EP1983020B1 (ja) |
JP (1) | JP4208941B2 (ja) |
KR (1) | KR100912999B1 (ja) |
CN (1) | CN101384651B (ja) |
AU (1) | AU2007213255B2 (ja) |
CA (1) | CA2641808C (ja) |
WO (1) | WO2007091466A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013176287A2 (ja) * | 2012-05-25 | 2013-11-28 | 大研医器株式会社 | 架橋型液晶高分子材料の変形方法、光駆動型成形体 |
JPWO2017043312A1 (ja) * | 2015-09-11 | 2018-04-26 | 株式会社村田製作所 | 処理済液晶ポリマー樹脂シート、その製造方法、樹脂多層基板およびその製造方法 |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4587276B2 (ja) * | 2004-02-27 | 2010-11-24 | 独立行政法人科学技術振興機構 | 液晶高分子からなる膜の製造方法 |
DE102011078998A1 (de) * | 2011-07-12 | 2013-01-17 | Osram Opto Semiconductors Gmbh | Lichtemittierendes Bauelement und Verfahren zum Herstellen eines lichtemittierenden Bauelements |
WO2014107152A2 (en) * | 2013-01-03 | 2014-07-10 | Empire Technology Development Llc | Resealable containers and methods for their preparation and use |
CN109312070B (zh) * | 2016-07-27 | 2020-08-25 | 宝理塑料株式会社 | 全芳香族聚酯酰胺和其制造方法 |
CN110177821B (zh) * | 2017-01-26 | 2020-03-24 | 宝理塑料株式会社 | 全芳香族聚酯和聚酯树脂组合物 |
US11370881B2 (en) * | 2018-01-18 | 2022-06-28 | Sumitomo Chemical Company, Limited | Liquid crystal polyester fibers |
CN110498913B (zh) * | 2018-05-16 | 2022-06-03 | 臻鼎科技股份有限公司 | 改性的液晶高分子聚合物、高分子膜及相应的制备方法 |
CN113084363B (zh) * | 2021-03-24 | 2023-04-11 | 西湖大学 | 一种飞秒激光加工光响应液晶弹性体梳齿的装置和方法 |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09136968A (ja) * | 1995-10-27 | 1997-05-27 | Bayer Ag | ポリマー中に微細構造物を作り出す方法 |
JP2000080180A (ja) * | 1998-08-14 | 2000-03-21 | Clariant Gmbh | 効果被膜のレ―ザ―マ―キング |
JP2001192847A (ja) * | 2000-01-13 | 2001-07-17 | Omron Corp | 高分子成形材のメッキ形成方法 |
JP2001200370A (ja) * | 2000-01-19 | 2001-07-24 | Omron Corp | 高分子成形材のメッキ形成方法 |
JP2002249607A (ja) * | 2001-02-26 | 2002-09-06 | Nitto Denko Corp | プラスチック構造体 |
JP2003136273A (ja) * | 2001-11-01 | 2003-05-14 | Nitto Denko Corp | 一貫製造レーザー加工ライン |
JP2004008881A (ja) | 2002-06-05 | 2004-01-15 | Nitto Denko Corp | プラスチック構造体の製造方法および該製造方法により作製されたプラスチック構造体 |
JP2004324017A (ja) | 2003-04-25 | 2004-11-18 | Tokyo Institute Of Technology | ポリエステル繊維の製造方法 |
WO2005026238A1 (ja) * | 2003-09-11 | 2005-03-24 | Nikon Corporation | 高分子結晶の加工方法、高分子結晶の加工装置、及び高分子結晶の観察装置 |
JP2005085554A (ja) * | 2003-09-05 | 2005-03-31 | Polyplastics Co | 導電性樹脂成形品及びその製造方法 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1017743A1 (en) * | 1997-09-04 | 2000-07-12 | Eastman Chemical Company | Thermoplastic polyurethane additives for enhancing solid state polymerization rates |
JP2002269607A (ja) * | 2001-03-08 | 2002-09-20 | Matsushita Electric Ind Co Ltd | 広告配信システム |
WO2003025644A1 (en) * | 2001-09-14 | 2003-03-27 | Photon-X, Inc. | Athermal polymer optical waveguide on polymer substrate |
CN1898058A (zh) * | 2004-01-23 | 2007-01-17 | 住友电气工业株式会社 | 形成微细孔的拉伸多孔聚四氟乙烯材料及其制备方法,和磨损加工方法 |
EP1743209B1 (en) * | 2004-04-16 | 2016-11-23 | D.K. And E.L. Mcphail Enterprises Pty Ltd | Method of forming an optically active matrix with void structures |
WO2005123324A1 (fr) * | 2004-06-08 | 2005-12-29 | Tag Heuer Sa | Procede de fabrication d’une piece micro- ou nanomecanique par une etape d’ablation laser a l’aide d’un femtolaser |
-
2007
- 2007-01-31 AU AU2007213255A patent/AU2007213255B2/en not_active Ceased
- 2007-01-31 EP EP07707798.0A patent/EP1983020B1/en active Active
- 2007-01-31 US US12/223,695 patent/US7608371B2/en active Active
- 2007-01-31 JP JP2007557800A patent/JP4208941B2/ja active Active
- 2007-01-31 WO PCT/JP2007/051612 patent/WO2007091466A1/ja active Application Filing
- 2007-01-31 KR KR1020087022066A patent/KR100912999B1/ko not_active IP Right Cessation
- 2007-01-31 CN CN2007800050687A patent/CN101384651B/zh not_active Expired - Fee Related
- 2007-01-31 CA CA2641808A patent/CA2641808C/en not_active Expired - Fee Related
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09136968A (ja) * | 1995-10-27 | 1997-05-27 | Bayer Ag | ポリマー中に微細構造物を作り出す方法 |
JP2000080180A (ja) * | 1998-08-14 | 2000-03-21 | Clariant Gmbh | 効果被膜のレ―ザ―マ―キング |
JP2001192847A (ja) * | 2000-01-13 | 2001-07-17 | Omron Corp | 高分子成形材のメッキ形成方法 |
JP2001200370A (ja) * | 2000-01-19 | 2001-07-24 | Omron Corp | 高分子成形材のメッキ形成方法 |
JP2002249607A (ja) * | 2001-02-26 | 2002-09-06 | Nitto Denko Corp | プラスチック構造体 |
JP2003136273A (ja) * | 2001-11-01 | 2003-05-14 | Nitto Denko Corp | 一貫製造レーザー加工ライン |
JP2004008881A (ja) | 2002-06-05 | 2004-01-15 | Nitto Denko Corp | プラスチック構造体の製造方法および該製造方法により作製されたプラスチック構造体 |
JP2004324017A (ja) | 2003-04-25 | 2004-11-18 | Tokyo Institute Of Technology | ポリエステル繊維の製造方法 |
JP2005085554A (ja) * | 2003-09-05 | 2005-03-31 | Polyplastics Co | 導電性樹脂成形品及びその製造方法 |
WO2005026238A1 (ja) * | 2003-09-11 | 2005-03-24 | Nikon Corporation | 高分子結晶の加工方法、高分子結晶の加工装置、及び高分子結晶の観察装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1983020A4 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013176287A2 (ja) * | 2012-05-25 | 2013-11-28 | 大研医器株式会社 | 架橋型液晶高分子材料の変形方法、光駆動型成形体 |
WO2013176287A3 (ja) * | 2012-05-25 | 2014-01-16 | 大研医器株式会社 | 架橋型液晶高分子材料の変形方法、光駆動型成形体 |
JPWO2017043312A1 (ja) * | 2015-09-11 | 2018-04-26 | 株式会社村田製作所 | 処理済液晶ポリマー樹脂シート、その製造方法、樹脂多層基板およびその製造方法 |
Also Published As
Publication number | Publication date |
---|---|
US7608371B2 (en) | 2009-10-27 |
EP1983020A1 (en) | 2008-10-22 |
CA2641808C (en) | 2011-05-03 |
AU2007213255A1 (en) | 2007-08-16 |
CA2641808A1 (en) | 2007-08-16 |
CN101384651A (zh) | 2009-03-11 |
JP4208941B2 (ja) | 2009-01-14 |
KR100912999B1 (ko) | 2009-08-20 |
US20090048362A1 (en) | 2009-02-19 |
CN101384651B (zh) | 2011-11-09 |
EP1983020A4 (en) | 2012-01-04 |
JPWO2007091466A1 (ja) | 2009-07-02 |
AU2007213255B2 (en) | 2010-11-18 |
EP1983020B1 (en) | 2014-05-07 |
KR20080098418A (ko) | 2008-11-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2007091466A1 (ja) | 液晶ポリマーの改質方法 | |
CN102574992B (zh) | 液晶性高分子以及成型体 | |
USRE42221E1 (en) | Polymerizable liquid crystal composition and polymer thereof | |
Hasegawa et al. | Poly (ester imide) s possessing low CTE and low water absorption (II). Effect of substituents | |
JP6474261B2 (ja) | 積層体 | |
JP4909534B2 (ja) | ポリエステル及びその製造方法 | |
JPS6038428A (ja) | ポリエステル及びその製造方法 | |
JPH0686594B2 (ja) | モノドメイン化されたコレステリツク液晶性ポリエステルフイルムまたはシ−トの製造方法 | |
CN108299632A (zh) | 一种液晶聚酯及其应用 | |
Kang et al. | Synthesis and properties of aromatic main-chain polyesters having disperse red 1 nonlinear optical chromophores in the side chain | |
Yin et al. | Research on synthesis and thermal properties of poly (ethylene terephthalate) sulfonate group containing ionomer | |
WO2020179767A1 (ja) | 液晶ポリエステル加工品の製造方法 | |
Zhou et al. | Study on copolymer from cyclic butylene terephthalate and polycaprolactone by in-situ polymerization | |
JP2009221406A (ja) | 液晶ポリエステルの製造方法 | |
JP2005178056A (ja) | 液晶性ポリエステル樹脂の成形加工法 | |
JP2016060163A (ja) | 偽造防止カード | |
JPH04166309A (ja) | 液晶ポリマーフィルム乃至シートの製造法 | |
Yang et al. | A novel phosphorus‐containing thermotropic liquid crystalline poly (ester‐imide) with high flame retardancy | |
JP2005105229A (ja) | 光学活性な液晶性高分子化合物の製造方法 | |
JPH04168129A (ja) | 液晶ポリマーフィルムの製造方法 | |
Avramova et al. | Liquid crystalline polymer laminates | |
Kim et al. | The effect of branching on the physical properties of 73/27 4‐hydroxybenzoic acid/2‐hydroxy‐6‐naphthoic acid | |
Yang et al. | Thermo-recording in (side chain type smectic A liquid crystal polymer/nematic liquid crystal/chiral dopant/dichroic dye) composite with a low power laser | |
Xu et al. | Effect of melting conditions on crystallization behavior of poly (trimethylene terephthalate) | |
NI et al. | Synthesis and Characterization of a Series of New Liquid Crystalline Copolyesters Containing Biphenyl-Ester Sulfone |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
DPE2 | Request for preliminary examination filed before expiration of 19th month from priority date (pct application filed from 20040101) | ||
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2007557800 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2007213255 Country of ref document: AU |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2641808 Country of ref document: CA |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2007707798 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 200780005068.7 Country of ref document: CN |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 12223695 Country of ref document: US |