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公开(公告)号：JPH01282324A
公开(公告)日：1989-11-14
申请号：JP11401488
申请日：1988-05-10
Applicant: TORAY INDUSTRIES
Inventor： MATSUMOTO TADAYUKI , KOMATSU SHIGENORI , SHIOKAWA MICHIHIRO
Abstract: PURPOSE:To obtain a carbon fiber with high physical properties without deteriorating strength thereof by calcining an infusibilized pitch-based yarn with a low degree of fusion. CONSTITUTION:An infusibilized pitch yarn with
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公开(公告)号：JPH01282303A
公开(公告)日：1989-11-14
申请号：JP11403688
申请日：1988-05-10
Applicant: TORAY INDUSTRIES
Inventor： SHIOKAWA MICHIHIRO , AKIMOTO TATSUO , TAKANAMI TETSUO
Abstract: PURPOSE:To obtain the subject device, having a vent hole in part of the interior in a feed port under a hopper of an extruder for melt extruding powder and capable of stably and directly melt extruding the powder without chipping the raw material and minimizing the thermal deterioration of the raw material. CONSTITUTION:Powder is melt extruded by a method using an extruder 6 equipped with a hopper 1. In the process, a device for melt extruding the powder having the hopper 1 provided with a vent hole 2 in part of a feed port 4 under the hopper 1 is used to feed the powder, such as thermoplastic resin, from the feed port 4 under the hopper 1 to the extruder 6 and fed to a cylinder part 3 with a screw 5, melted and extruded through a discharge outlet 7 and molded. Furthermore, the vent hole 2 is preferably provided in the feed port 4 on at least the side of the discharge port 7 of the extruder 6.
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公开(公告)号：JPH01282349A
公开(公告)日：1989-11-14
申请号：JP11403588
申请日：1988-05-10
Applicant: TORAY INDUSTRIES
Inventor： SHIOKAWA MICHIHIRO , MATSUMOTO TADAYUKI
Abstract: PURPOSE:To obtain the title carbon fiber excellent in flexibility by conjugate spinning of a combination of a pitch raw material with a resin component so that the resin component come into circumferential contact with the raw material followed by removing the resin component before or after the insolubilization treatment and then by calcination. CONSTITUTION:A combination of (A) a pitch raw material such as petroleum- or coal-based pitch with (B) a resin component such as polystyrene or polyacrylonitrile is subjected to conjugate spinning so that the component B come into circumferential contact with the component A to form a precursor fiber. Thence, the resin component is removed before or after the insolubilization treatment followed by calcination, thus obtaining the objective carbon fiber improved in its handleability.
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公开(公告)号：JPH01282341A
公开(公告)日：1989-11-14
申请号：JP11403288
申请日：1988-05-10
Applicant: TORAY INDUSTRIES
Inventor： SHIOKAWA MICHIHIRO , MATSUMOTO TADAYUKI
Abstract: PURPOSE:To provide the title insolubilization process in an oxidative gas so designed that a pitch raw material is spun and the resulting precursor fiber is imparted with static electricity prior to the insolubilization treatment to facilitate said treatment, thereby obtaining, a high-performance pitch fiber with little fusing. CONSTITUTION:When a pitch precursor fiber produced by spinning a coal- or petroleum-based pitch raw material is to be put to insolubilization treatment in an oxidative gas, said fiber is imparted, prior to said treatment, with static electricity (pref., washing with a solvent such as water or alcohol followed by imparting the fiber with static electricity through non-contact technique) to effect opening to prevent the pitch yarn from fusing when insolubilized, thereby accomplishing the insolubilization in a short time in high efficiency and obtaining a high-grade pitch fiber of improved physical properties.
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公开(公告)号：JPH01282312A
公开(公告)日：1989-11-14
申请号：JP11400588
申请日：1988-05-10
Applicant: TORAY INDUSTRIES
Inventor： MATSUMOTO TADAYUKI , SHIOKAWA MICHIHIRO , TANAKA SEIJI , AKIMOTO TATSUO , KOMATSU SHIGENORI
Abstract: PURPOSE:To obtain the subject fiber having improved reeling and handling properties by conjugately spinning a macromolecular compound with a constant carbonization yield or a mixture of a pitch and another macromolecular compound and a pitch or a mixture of a macromolecular compound and a pitch. CONSTITUTION:(A) (i) A macromolecular compound with >=5% carbonization yield such as polyacrylonitrile or polyphenylene sulfide or (ii) a mixture of a pitch such as coal-based or petroleum-based pitch and another macromolecular compound and (B) (iii) a pitch or (iV) a mixture of a macromolecular compound and a pitch are conjugately spun to provide the objective pitch fiber having a seath and core conjugate structure. In addition, the above mentioned conjugate spinning is preferably carried out using a static kneader.
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Patent Agency Ranking
公开(公告)号：JPH01282347A
公开(公告)日：1989-11-14
申请号：JP11400888
申请日：1988-05-10
Applicant: TORAY INDUSTRIES
Inventor： MATSUMOTO TADAYUKI , SHIOKAWA MICHIHIRO , AKIMOTO TATSUO
Abstract: PURPOSE:To obtain the title fiber of outstanding physical properties in excellent fiber formability by removing fluid optically anisotropic foreign substances from mesophase pitch followed by melt spinning of the resultant pitch. CONSTITUTION:Mesophase pitch is freed from such foreign substances as to be imcompatible with the matrix and have fluidity lower than that of said matrix, through pref. filtration, and put to melt spinning, thus obtaining the objective optically anisotropic fiber. In this fiber, optically anisotropic carbonaceous liquid crystals incompatible with said matrix but formed with a curved surface smooth in the interface with the matrix, free from foreign substances of size >=1/5times the fiber diameter are oriented in the direction of fiber axis.
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公开(公告)号：JPH01282344A
公开(公告)日：1989-11-14
申请号：JP11403788
申请日：1988-05-10
Applicant: TORAY INDUSTRIES
Inventor： SHIOKAWA MICHIHIRO , MATSUMOTO TADAYUKI
Abstract: PURPOSE:To obtain a high-grade pitch fiber uniform in fiber diameter by melt extrusion (spinning), in high stability, of a pitch raw material with its granular size and the content of powdery material regulated, respectively, to specified values or lower. CONSTITUTION:The objective fiber improved in physical properties can be obtained by stable melt extrusion (spinning) with little variation in the delivery, of a pitch raw material with its granular size regulated to
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公开(公告)号：JPH01282339A
公开(公告)日：1989-11-14
申请号：JP11403088
申请日：1988-05-10
Applicant: TORAY INDUSTRIES
Inventor： SHIOKAWA MICHIHIRO , OBARA YASUO , MARUNO HIROSHI
Abstract: PURPOSE:To obtain the subject fiber calcinable into high-grade carbon fiber without fluff and yarn breakage by winding a pitch fiber around a winding drum having a specific diameter. CONSTITUTION:Petroleum or coal based pitch is melt spun using, e.g., vented extruder, to provide preferably >=250 multifilaments, which are then wound around a winding drum having >60mm diameter to afford the aimed fiber.
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公开(公告)号：JPS5818409A
公开(公告)日：1983-02-03
申请号：JP11512381
申请日：1981-07-24
Applicant: TORAY INDUSTRIES
Inventor： YAMANE SHIYOUJI , SHIOKAWA MICHIHIRO , ENDOU CHIYUUICHI
Abstract: PURPOSE:Polyphenylene sulfide, mainly consisting of p-phenylene sulfide as the major unit, is, without precuring, subjected to melt spinning and drawn under specific temperature conditions to produce the titled fiber of high strength stably without formation of irregular fiber. CONSTITUTION:Polyphenylene sulfide containing more than 90% of p-phenylene sulfide as the structural unit is, without precuring, subjected to melt spinning, then drawing is conducted in the proper zone of the temperature satisfying the equation where T is the temperature of drawing; X is the melt flow of the polymer in g/10min measured in accordance with ASTM-D-1238-70 at 243 deg.C under the load of 5kg outside the zone B where uneven fiber is formed B and another zone C where the strength is lowered.
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公开(公告)号：JPS54142356A
公开(公告)日：1979-11-06
申请号：JP4871078
申请日：1978-04-26
Applicant: TORAY INDUSTRIES
Inventor： NAKANISHI TOORU , YAMANE SHIYOUJI , SHIOKAWA MICHIHIRO
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