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21. 发明专利

JPH07205310A CARBON FIBER COMPOSITE MATERIAL 失效
公开(公告)号：JPH07205310A
公开(公告)日：1995-08-08
申请号：JP374594
申请日：1994-01-18
申请人： MITSUBISHI RAYON CO
发明人： KAGEYAMA YOSHITAKA , IMAI YOSHITAKA
IPC分类号： C08J5/24 , B29C70/10
摘要： PURPOSE:To obtain a carbon fiber composite material excellent in resistance against metal corrosion by specifying the specific resistance of the carbon fiber composite material reinforcing a matrix resin. CONSTITUTION:The specific resistance of a carbon fiber composite material reinforcing a matrix resin by a carbon fiber is set to 1.0-X10 OMEGA.cm or more. In order to more perfectly prevent the corrosion of a metal material, the specific resistance is pref. 5.0-10 OMEGA.cm. A high resistance carbon fiber to be used shows strong adhesiveness against a resin even if surface treatment is not especially applied but, by surface treatment due to the oxidation using a chemical soln. such as nitric acid or the like and surface treatment in plasma of gas such as Ar, O2 or CF3, the adhesiveness and dispersibility of the carbon fiber with the matrix resin can be further enhanced.

22. 发明专利

JPH0748155A PRODUCTION OF FIBER-REINFORCED CONCRETE 失效
公开(公告)号：JPH0748155A
公开(公告)日：1995-02-21
申请号：JP19382993
申请日：1993-07-12
申请人： MITSUBISHI RAYON CO , KUMAGAI GUMI CO LTD
发明人： KUME SHOICHI , NAKAO FUJIO , IMAI YOSHITAKA , TAKEI YOSHIKAZU , SUENAGA TATSUO , SATOYAMA KIMIHARU
IPC分类号： C04B14/38 , C04B20/10 , C04B28/02 , C04B41/83 , C04B103/44
摘要： PURPOSE:To improve strength of a fiber-reinforced concrete by dispersing a carbon fiber having a peak ratio of OIS/CIS by ESCA method not lower than a prescribed value and treated with a specific dispersion in which silicone rubber fine particles are dispersed into a cement-based matrix. CONSTITUTION:A polyacrylonitrile-based carbon fiber is subjected to surface oxidation treatment by electrolytic oxidation, etc., to provide a carbon fiber having >=0.10 peak ratio of OIS/CIS measured by ESCA. This carbon fiber is treated with a dispersion having >=-10mV zeta electric potential and obtained by dispersing silicone rubber fine particles into water using a cationic surfactant such as a polyoxyethylene tallow alkylamine to attach about 0.1-5wt.% silicone rubber fine particles to the carbon fiber. Then, silicone rubber fine particles- attached carbon fiber cut into prescribed fiber length is mixed into a cement matrix, executed and cured to provide the objective high-strength fiber-reinforced concrete.

23. 发明专利

JPH0726470A METHOD FOR MODIFYING SURFACE OF CARBON FIBER 失效
公开(公告)号：JPH0726470A
公开(公告)日：1995-01-27
申请号：JP19382693
申请日：1993-07-12
申请人： MITSUBISHI RAYON CO
发明人： KUME SHOICHI , NAKAO FUJIO , IMAI YOSHITAKA
IPC分类号： D06M15/693 , D06M13/02 , D06M13/322 , D06M13/372 , D06M13/463 , D06M23/08 , D06M101/00 , D06M101/40
摘要： PURPOSE:To obtain carbon fiber excellent in dispersibility in a matrix resin, affinity and adhesion to the resin by treating specific carbon fiber with a fine particle dispersion of a silicone rubber at a specific zeta potential or above and modifying the surface thereof. CONSTITUTION:A carbon fiber bundle having =-10mV zeta potential and then dried to carry out the surface modification of the fine silicone rubber particles so as to provide 0.1-5wt.% amount of sticking fine silicone rubber particles expressed in terms of the solid content. The obtained surface-modified carbon fiber is subsequently used as reinforcing fiber for a fiber-reinforced resin composite material using a thermoplastic resin such as an ABS, a nylon or a polycarbonate as the matrix.

24. 发明专利

JPH05339813A 失效
公开(公告)号：JPH05339813A
公开(公告)日：1993-12-21
申请号：JP34698992
申请日：1992-12-25
申请人： MITSUBISHI RAYON CO
发明人： HAJIKANO AKIRA , HAYASHI SHOJI , IMAI YOSHITAKA , AOKI KUNIHIRO
IPC分类号： D01F6/18 , D01F6/38 , D01F9/22
摘要： PURPOSE:To provide the acrylonitrile fiber enabling to produce a carbon fiber having a high strength and a high elastic modulus by a short time calcination, and to provide the method for wet-spinning a precursor fiber reduced in fuzzy without the breakage of the fiber for a long time. CONSTITUTION:The acrylonitrile fiber comprises an acrylonitrile copolymer comprising 96.0-98.5wt.% of acrylonitrile, 1.0-3.5wt.% of acrylamide and 20.5wt.% of methacrylic acid as constituents, the wt.% A of the acrylamide and the wt.% M of the methacrylic acid in the copolymer satisfying the following equations (I) and (II), and has an iodine adsorbing amount of

25. 发明专利

JPH04108117A APPARATUS FOR FLAMEPROOFING TREATMENT 失效
公开(公告)号：JPH04108117A
公开(公告)日：1992-04-09
申请号：JP21969990
申请日：1990-08-21
申请人： MITSUBISHI RAYON CO
发明人： IMAI YOSHITAKA , DAIGUUJI TSUTOMU , ANZAI HISAO , YAMAMOTO NOBUYUKI , KODAMA YOICHI
IPC分类号： D01F9/12
摘要： PURPOSE:To carry out flameproofing treatment at a high speed while preventing fusion of fiber and runaway reaction by dividing a roller chamber and a heat- treating chamber, specifying passage conditions of precursor fiber and blowing heated air on fiber in the heat-treating chamber. CONSTITUTION:A roller chamber 11 and a heat-treating chamber 8 are divided with walls (3a) and (3b) to form the upper and lower roller chambers (11a) and (11b). Precursor fiber 1 is meandered with rollers 2 so as to alternately pass between both the roller chamber and the heat-treating chamber. The internal temperatures of both the chambers are specified and the passage time at a time for the fiber 1 to pass through the heat-treating chamber is specified. Many ducts 10 are oppositely arranged in the heat-treating chamber 8 sandwiching the fiber running passage in the interior and the surfaces of the ducts 10 facing the fiber are provided with many heated air blowoff openings (10a) to feed the hot air into the interior 9 of the ducts. Thereby, the heated air is blown on the fiber passing through the heat-treating chamber.

26. 发明专利

JPH0323649B2 失效
公开(公告)号：JPH0323649B2
公开(公告)日：1991-03-29
申请号：JP19129283
申请日：1983-10-13
申请人： MITSUBISHI RAYON CO
发明人： NAKATANI SOJI , IMAI YOSHITAKA , YONEYAMA HIROAKI , TANUKI YOSHITERU
IPC分类号： D01F9/22

27. 发明专利

JPS62231028A PRODUCTION OF CARBON FIBER 失效
公开(公告)号：JPS62231028A
公开(公告)日：1987-10-09
申请号：JP7121986
申请日：1986-03-31
申请人： MITSUBISHI RAYON CO
发明人： SASAKI SUSUMU , IMAI YOSHITAKA , NAKATANI SOJI
IPC分类号： D01F9/22
摘要： PURPOSE:To obtain a carbon fiber having high performance in high efficiency, by heat-treating a frame-resistant fiber of an acrylonitrile polymer having a fiber density falling within a specific range and carbonizing the heat treated fiber. CONSTITUTION:An acrylonitrile polymer fiber having a fiber density of 1.34-1.40g/ml is heat-treated in an inert gas atmosphere at a heat-treatment initiation temperature of 300+ or -50 deg.C, a rate of temperature rise of 50-250 deg.C/min and a heat-treatment completion temperature of 450+ or -50 deg.C. The treated fiber is further heat-treated in an inert gas atmosphere at 500-700 deg.C and a rate of temperature rise of =1,000 deg.C, preferably 1,000-1,900 deg.C to obtain the objective carbon fiber.

28. 发明专利

JPS62133125A PRODUCTION OF CARBON FIBER 失效
公开(公告)号：JPS62133125A
公开(公告)日：1987-06-16
申请号：JP27251485
申请日：1985-12-05
申请人： MITSUBISHI RAYON CO
发明人： KOBAYASHI TOA , YAMAMOTO NOBUYUKI , NAKATANI SOJI , IMAI YOSHITAKA
IPC分类号： D01F9/22
摘要： PURPOSE:A bundle of acrylonitrile polymer filaments of a specific fineness is preoxidized under specific conditions so that each filament has a specific filament density and heat-treated to give carbon filaments of high strength, high elasticity and homogeniety in individual filaments, in high efficiency. CONSTITUTION:A filament bundle of acrylonitrile polymer which has a filament fineness of 0.3-1.5 denier and more than 15,000 denier total fineness is fed into the preoxidation oven which has 3 different stages differing in the filament- treating temperature in an oxidative atmosphere, as the width W (mm) of the bundle is kept at in the range satisfying the equation: 2.22X10 D D (D is the total fineness) to effect preoxidation under such conditions as the filament density satisfies the equation [rhon is the filament density (g/ml) after n-th treatment; rhoo is the density of original syn thetic fiber; rhok is filament density on the completion of the preoxidation; tn is preoxidation time (minutes) at the n-th stage; K is the stage number of preoxidation oven), then the bundle is heat-treated at 1,100-2,000 deg.C in an inert atmosphere to give the objective filaments.

29. 发明专利

JPS61152826A HIGH-ELASTICITY CARBON FIBER AND ITS PRODUCTION 失效
公开(公告)号：JPS61152826A
公开(公告)日：1986-07-11
申请号：JP27234184
申请日：1984-12-24
申请人： MITSUBISHI RAYON CO
发明人： YONEYAMA HIROAKI , IMAI YOSHITAKA , NAKATANI SOJI
IPC分类号： D01F9/22
摘要： PURPOSE:Acrylic fibers of a specific filament denier are subjected to preoxidation treatment in an oxygen atmosphere, then to carbonization or graphitization in an inert atmosphere to give the titled carbon fiber with a specific filament diameter and high strand elasticity. CONSTITUTION:Acrylic fibers of 0.1-1.1 filament denier is subjected to preoxidation treatment in an oxygen atmosphere by means of a circulating-air oven, then to carbonization in an inert atmosphere such as nitrogen atmosphere in a furnace. Further, the product is graphitized in a furnace in an inert atmosphere to give the objective carbon fiber of less than 6 micron diameter and more than 45ton/mm strand elasticity.

30. 发明专利

JPS59137512A Production of high-strength carbon fiber 失效
标题翻译：生产高强度碳纤维
公开(公告)号：JPS59137512A
公开(公告)日：1984-08-07
申请号：JP925983
申请日：1983-01-25
申请人： Mitsubishi Rayon Co Ltd
发明人： TASAKA YOSHITERU , IMAI YOSHITAKA , NAKATANI SOUJI
IPC分类号： D01F9/22
摘要： PURPOSE: Acrylonitrile synthetic fiber is treated to give preoxidized fiber of a specific density and the fiber is heat treated stepwise under tension in an inert atmosphere, then heat treated at high temperature to produce the titled carbon fiber with high orientation, uniformity and performance without yarn defects.
CONSTITUTION: Acrylonitrile synthetic fiber is treated so that its density becomes 1.25W1.37g/cm
3 to give preoxidized fiber and the resultant fiber is heat treated under tension in an inert atmosphere to adjust its density to 1.40W 1.57g/cm
3 . Further, the tension is increased and the heat treatment is continued until the density reaches 1.57W1.70g/cm
3 , subsequently the heat treatment is conducted in an inert atmosphere over 800°C to give the objective high-strength carbon fiber. The preoxidation temperature at the first step preferably ranges 250W600°C and at the second step, 400W800°C.
COPYRIGHT: (C)1984,JPO&Japio
摘要翻译：目的：处理丙烯腈合成纤维，得到特定密度的预氧化纤维，并在惰性气氛下，在拉伸下逐步热处理纤维，然后在高温下进行热处理，生产具有高取向性，均匀性和性能的标称碳纤维，无需纱线缺陷。构成：处理丙烯腈合成纤维，使其密度为1.25-1.37g / cm 3，得到预氧化纤维，所得纤维在惰性气氛中在张力下热处理，将其密度调节至1.40-1.57g / cm 3， 3>。此外，张力增加，热处理持续直到密度达到1.57-1.70g / cm 3，随后在800℃以上的惰性气氛中进行热处理，得到目标高强度碳纤维。在第一步骤中的预氧化温度优选为250-600℃，在第二步骤为400-800℃。

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