JPS6166615A - Bundled short carbon fiber chip - Google Patents
Bundled short carbon fiber chipInfo
- Publication number
- JPS6166615A JPS6166615A JP18908584A JP18908584A JPS6166615A JP S6166615 A JPS6166615 A JP S6166615A JP 18908584 A JP18908584 A JP 18908584A JP 18908584 A JP18908584 A JP 18908584A JP S6166615 A JPS6166615 A JP S6166615A
- Authority
- JP
- Japan
- Prior art keywords
- short carbon
- carbon fiber
- short
- carbon fibers
- chips
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/12—Making granules characterised by structure or composition
- B29B9/14—Making granules characterised by structure or composition fibre-reinforced
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は集束化炭素短繊維チップ、さらに詳しくいえば
、繊維強化成形材料の製造に用いられる成形加工性に優
れた、良好な集束性を有する炭素短繊維チップに関する
ものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to short carbon fiber chips, and more specifically, to carbon fiber chips having good convergence properties and excellent moldability for use in the production of fiber-reinforced molding materials. It relates to short fiber chips.
近年、炭素短繊維を各種マトリックス中に混合、分散さ
せて成る繊維強化成形材料は、炭素繊維の優れｆｃ特注
、例えば高強度、高剛性、低比重、高電気伝導性、低熱
膨張率、高耐摩耗性などを有していることから、幅広い
用途が開けつつあり、工業的に重要な材料として注目さ
れている。In recent years, fiber-reinforced molding materials made by mixing and dispersing short carbon fibers in various matrices have been developed to incorporate the superior characteristics of carbon fibers, such as high strength, high rigidity, low specific gravity, high electrical conductivity, low coefficient of thermal expansion, and high durability. Due to its abrasive properties, it is finding a wide range of uses and is attracting attention as an industrially important material.
一般に、炭素短繊維を各種マトリックスに混合、分散さ
せて繊維強化成形材料を得る場合、該炭素短繊維の取扱
い性を容易にして、混合、分散の工程における作業性２
高めるために、あらかじめ数百〜数百万木の炭素短繊維
を集束したチップが用いられている。Generally, when a fiber-reinforced molding material is obtained by mixing and dispersing carbon short fibers in various matrices, the handling of the carbon short fibers is made easy and the workability in the mixing and dispersion process is improved.
To increase this, chips are used in which hundreds to millions of short carbon fibers are bundled in advance.
従来の技術
従来、このような集束化炭素短繊維チップを得るために
、集束剤として、通常繊維強化成形材料に用いられるマ
トリックス樹脂、例えばポリオレフィン、ポリエステル
、ポリアミド、アクリル樹脂、エポキシ樹脂、フェノー
ル樹脂などを用い、炭素短繊維を集束してチップ状に加
工している。Conventional technology Conventionally, in order to obtain such bundled short carbon fiber chips, matrix resins usually used in fiber reinforced molding materials, such as polyolefins, polyesters, polyamides, acrylic resins, epoxy resins, phenolic resins, etc., have been used as binding agents. is used to bundle short carbon fibers and process them into chips.
しかしながら、従来の集束化炭素短繊維チップは、集束
性が必ずしも十分ではないため、該炭素短繊維チップ企
マトリックス中へ混合１分散する工程において種々の問
題を生じ、炭素短繊維強化成形材料の製造に際して大き
な障害となっている。However, since the conventional bundled short carbon fiber chips do not necessarily have sufficient bundling properties, various problems arise in the process of mixing and dispersing the short carbon fiber chips into the matrix, resulting in the production of short carbon fiber reinforced molding materials. This has become a major obstacle.
例えば、炭素短繊維チップを、スクリュー・フィーダー
、ホッパー・フィーダー、テーブル・フィーダーなどを
用いて、マトリックス中へ供給する場合、該炭素短繊維
チップが供給工程中に機械的混合やかきまぜ作用を受け
るために、集束性の弱い炭素短繊維チップでは、チップ
が開繊して、炭素短繊維のからまった毛玉が生じ、これ
が該チップの供給工程で詰まる原因となり、供給が順調
に行えなくなる。また、炭素短繊維チップの集束が不完
全な場合、当初から毛玉を含んでいるために、チップの
順調な供給を妨げる。したがって、従来の集束化炭素短
繊維チップにおいては、炭素短繊維強化成形材料中の炭
素繊維含有量を均一にコントロールすることができず、
−！た、押出し機で連続的に該炭素短繊維チップとマト
リックスと？混線して、ストランド状の炭素短繊維強化
成形材料を連続的に押出す場合、一定の押出速度が得ら
れず、ストランド切れが多発し、生産性が大幅に低下す
る欠点を伴う。For example, when carbon short fiber chips are fed into a matrix using a screw feeder, hopper feeder, table feeder, etc., the carbon short fiber chips are subjected to mechanical mixing and agitation during the feeding process. In addition, in the case of short carbon fiber chips with weak convergence, the chips open and form a pill of tangled carbon short fibers, which causes a blockage in the chip supply process and prevents smooth supply. Furthermore, if the short carbon fiber chips are incompletely bundled, they contain fluff from the beginning, which prevents the smooth supply of chips. Therefore, in conventional bundled short carbon fiber chips, it is not possible to uniformly control the carbon fiber content in the short carbon fiber reinforced molding material.
-! In addition, the short carbon fiber chips and the matrix are continuously processed using an extruder. When a strand-shaped short carbon fiber-reinforced molding material is continuously extruded by mixing wires, a constant extrusion speed cannot be obtained, strand breakage occurs frequently, and productivity is significantly reduced.
発明がＪｌｙｌ！決しようとする問題点本発明の目的は
、このような炭素短繊維強化成形材料を製造する際に生
じる欠点を改良するために、集束性に優れた炭素短繊維
チップを提供することにあり、さらにマトリックスへの
分散性やマトリックスとの親和性に優れ、その結果極め
て優れた物ａを有する成形品を与えうる炭素短繊維チッ
プを提供することにある。The invention is Jlyl! Problems to be Solved An object of the present invention is to provide short carbon fiber chips with excellent cohesiveness in order to improve the drawbacks that occur when producing such short carbon fiber reinforced molding materials. Furthermore, it is an object of the present invention to provide short carbon fiber chips that have excellent dispersibility in a matrix and affinity with the matrix, and as a result can provide molded articles having extremely excellent properties a.
問題点を解決するための手段
本発明者らは種々研究を重ねた結果、特定の分子量を有
する室温で固体状のエポキシ化合物を主成分として含■
するバインダーを用いて集束し、かつかさ密度及び安息
角が特定の値であるような炭素短繊維チップにすること
により前記目的を達成しうろこと？見出し、この知見に
基づいて本発明を完成するに至った。Means for Solving the Problems As a result of various studies, the present inventors have developed a method containing an epoxy compound as a main component that is solid at room temperature and has a specific molecular weight.
Can this be achieved by concentrating carbon fibers into short carbon fiber chips with a specific binder and having specific bulk density and angle of repose? Based on this finding, we have completed the present invention.
すなわち、不発明は、分子量６００〜ｓ、ｏｏｏ の
室温で固体状のエポキシ化合物を主成分としたバインダ
ーにより集束された多数の炭素短繊維で構成され、該エ
ポキシ化合物の含有量０．１〜１０重量壬、かさ密度３
００９／を以上、安息角５０°以下を有する集束化炭素
短繊維チップを提供するものであるＯ
不発明におけるバインダーの主成分として用いるエポキ
シ化合物としては１例えばビスフェノール型、脂環族型
、ノボラック型、レゾール型、アミン型などのエポキシ
化合物Ｄモノマー、低重合物及びこれらのエポキシ化合
物と硬化剤との部分反応生成物などの中から選ばれた少
なくとも１種の室温で固体状のエポキシ化合物が挙げら
れる。That is, the invention is composed of a large number of short carbon fibers bound together by a binder mainly composed of an epoxy compound that is solid at room temperature and has a molecular weight of 600 to s, ooo, and the content of the epoxy compound is 0.1 to 10. Weight, bulk density 3
The epoxy compound used as the main component of the binder in the present invention is 1, for example, bisphenol type, alicyclic type, novolac type. , resol type, amine type, etc. Epoxy compounds D monomers, low polymers, partial reaction products of these epoxy compounds and curing agents, etc. At least one epoxy compound that is solid at room temperature is mentioned. It will be done.
特に、本発明を効果的に発揮させるために１分子量の異
なる２種以上のエポキシ化合物を混合して用いることが
好ましい。In particular, in order to effectively exhibit the present invention, it is preferable to use a mixture of two or more epoxy compounds having different molecular weights.
これらのエポキシ化合物・は、室温で固体状であること
が必要でるり、好ましくは６０℃以上の融点ヲ有するこ
とが望ましい。該エポキシ化合物が室温で敵状の場合は
、得られた炭素短繊維チップの集束性が劣り好ましくな
い。These epoxy compounds need to be solid at room temperature, and preferably have a melting point of 60°C or higher. If the epoxy compound is hostile at room temperature, the resulting short carbon fiber chips will have poor cohesiveness, which is not preferred.
また、不発明で用いるエポキシ化合物の分子量は６００
〜５，０００の範囲、好ましくは８００〜４，０００の
範囲である。分子量が６００未満では炭素短繊維チップ
の集束性が劣り、またｓ、ｏｏｏを超えると得られる炭
素短繊維強化成形材料の物性が低下する〇さらに、前記
エポキシ化合物の炭素短繊維テップに対する含有量は帆
１〜１０重量％、好ましくは０．５〜８重量係の範囲で
選ばれる。この含有量が０．１重量係未満では該炭素短
繊維チップの集束性が劣り、一方ｌＯ重量憾ヲ超えると
得られる炭素短繊維強化成形Ｈ料の物性が低下する。In addition, the molecular weight of the epoxy compound used in the invention is 600.
-5,000, preferably 800-4,000. If the molecular weight is less than 600, the convergence of the short carbon fiber chips will be poor, and if it exceeds s, ooo, the physical properties of the obtained short carbon fiber reinforced molding material will deteriorate.Furthermore, the content of the epoxy compound with respect to the short carbon fiber tips is It is selected in the range of 1 to 10% by weight of the sail, preferably 0.5 to 8% by weight. If the content is less than 0.1% by weight, the short carbon fiber chips will have poor convergence, while if it exceeds 10% by weight, the physical properties of the obtained short carbon fiber reinforced molding material will deteriorate.
本発明に用いるバインダーには、主成分の分子量６００
〜５，０００を有する室温で固体状のエポキシ化合物以
外に、必要に応じて、例えば飽和又は不飽和ポリエステ
ル、アクリル樹脂、酢酸ビニル樹脂、ポリアミド禎（脂
、ポリフェニレンサルファイド、ポリフェニレノエーテ
ル、ポリカーボネート、ポリオキシメチレノ、ポリスチ
レン、ポリオレフィンなどのホモポリマー又はコポリマ
ー、界面活性剤、ンランカップリング剤、エポキシ硬化
剤、触媒、接着剤などの添加剤と配合することもてきる
。The binder used in the present invention has a main component molecular weight of 600.
In addition to epoxy compounds which are solid at room temperature and have a molecular weight of 5,000 to 5,000, if necessary, for example saturated or unsaturated polyesters, acrylic resins, vinyl acetate resins, polyamides, polyphenylene sulfides, polyphenylene ethers, polycarbonates, etc. It can also be blended with additives such as homopolymers or copolymers such as polyoxymethylene, polystyrene, and polyolefins, surfactants, polymeric coupling agents, epoxy curing agents, catalysts, and adhesives.
また、該バインダーが前記エポキ／化合物を含むエマル
ジョンである場合には、得られた炭素短繊維チップの集
束性が極めて良好であるので、特に好ましい。Further, it is particularly preferable when the binder is an emulsion containing the above-mentioned epoxy/compound, since the obtained short carbon fiber chips have extremely good cohesiveness.
このようなエマルジョンに用いる界面活性剤としては、
例えばポリオキ７メテレンのヒマシ油エーテル、ノニル
フェニルエーテル、スチレン化フェニルエーテルナト
ルエーテル又はポリオキシエチレンアルキルアリルエー
テル及びポバールなどの中から選ばれた少なくとも１種
の界面活性剤が好ましく挙ザられる。Surfactants used in such emulsions include:
For example, at least one surfactant selected from polyoxy-7methylene castor oil ether, nonylphenyl ether, styrenated phenyl ether sodium ether, polyoxyethylene alkyl allyl ether, and poval is preferably mentioned.
不発明の炭素短繊維チップは、かさ密度が３００？７１
以上、好ましくはａｓｏＰ／を以上であり、また安息角
ハ５０°以下、好ましくは４５度以下である。The uninvented short carbon fiber chips have a bulk density of 300 to 71
Above, preferably asoP/ is above, and the angle of repose is 50 degrees or less, preferably 45 degrees or less.
かさ密度及び安息角が前記範囲を逸脱すると、該炭素短
繊維チップとマトリックスとのトライブレンド性及び練
合、押出し性が低下する。このように、かさ密度及び安
息角は本発明の特徴を発揮させるために、極めて重要な
要因である。When the bulk density and the angle of repose deviate from the above ranges, the tri-blending properties, kneading and extrusion properties of the short carbon fiber chips and the matrix deteriorate. As described above, the bulk density and the angle of repose are extremely important factors for exhibiting the features of the present invention.
本発明の炭−（４短繊卸チツプに用いる炭素繊維として
は、公知の各（１［（炭素繊維、例えばポリアクリロニ
トリル、レーヨン、ピッチ、 炭化水Ｒｊｊスｌどを原
料とする炭素化繊ｊ１（：、黒鉛化繊維及びこれラニニ
ッケル、アルミニウム、銅などの金ｆｆ’にコーティン
グした炭素繊維などの中から選ばれた少なくとも１陣の
炭素繊維が挙げられる。また、炭素繊維の繊維径′／Ｃ
ついては，特に制限にないが、通常３〜２０μの範囲の
ものが用いられる。さらに、これらの炭素繊維企集宋剤
組成物で集束する前に、公知の方法で表面処理すること
もできる。The carbon fibers used in the carbon fiber tip of the present invention include carbon fibers made from known carbon fibers, such as polyacrylonitrile, rayon, pitch, hydrocarbons, etc. : At least one group of carbon fibers selected from graphitized fibers and carbon fibers coated with gold such as nickel, aluminum, and copper may be mentioned.
Although there are no particular limitations on this, those having a diameter in the range of 3 to 20 microns are usually used. Furthermore, the carbon fibers can be surface-treated by a known method before binding with these carbon fiber concentrator compositions.
本発明の炭素短唄維チップは、例えば数百〜数百万木の
炭素長繊維東に，前記の集束剤組成物の溶液、エマルジ
ョン、Ｇ融物などを含浸させたのち、乾燥するか、ある
いは乾燥せずに、該炭素長繊．准東全公知の切断方法に
よって１〜１０＋ａｍの長さに切断し、必要に応じてさ
らに乾燥処理することによって製造することができる。The short carbon fiber chips of the present invention can be obtained by impregnating long carbon fibers of several hundred to several million trees with a solution, emulsion, G melt, etc. of the sizing agent composition, and then drying them. Alternatively, the long carbon fibers may be produced without drying. It can be manufactured by cutting into lengths of 1 to 10+ am by a known cutting method of Juntozen, and further drying if necessary.
本発明の炭素短繊維チップを用いて繊維強化成形材料を
腹面するのに使用されるマトリックスとしては、例えば
ポリウレタン／、ポリエステル、ポリアミド、アクリル
樹脂、ポリオキンメチレン、ポリカーボネート、ポリス
チレン、ポリスエニレンサルファイド、ポリフェニレン
エーテル、ポリエーテル・エーテルケトン、ポリフェニ
ン／スルホン、フッ素樹脂、エポキシ樹脂、ポリイミド
、ポリウレタン、フェノール樹脂などのポリマー類又は
これらのコポリマー類、金属類、セラミックス類などの
公知のマトリックスを挙げることができるが、特にポリ
マー類、コポリマー類又はこれらの混合物が好適である
。Examples of matrices used for fabricating fiber-reinforced molding materials using the short carbon fiber chips of the present invention include polyurethane/, polyester, polyamide, acrylic resin, polyoxymethylene, polycarbonate, polystyrene, polyenylene sulfide, Examples include known matrices such as polymers such as polyphenylene ether, polyether/ether ketone, polyphenylene/sulfone, fluororesin, epoxy resin, polyimide, polyurethane, and phenolic resin, or copolymers thereof, metals, and ceramics. However, polymers, copolymers or mixtures thereof are particularly suitable.
このようなマトリックスと不発明の炭素短繊維チップと
の混合は，−軸又は二軸の押出機，高速ミキサー、プレ
ス機、射出成形機、引抜成形機などによって行うことが
できる。特に−軸又は二軸の押出機が好ましく用いられ
る。Mixing of such a matrix and the inventive short carbon fiber chips can be carried out using a -screw or twin-screw extruder, a high-speed mixer, a press, an injection molding machine, a pultrusion molding machine, or the like. In particular, a -screw or twin-screw extruder is preferably used.
また、該炭素短繊維チップとマトリックスとの混合時に
、例えば他種炭素繊維、ガラス繊維、アラミド繊維、炭
化ケイ素愼維、ボロン繊維などの長繊維や短繊維、ボイ
スカー類，これらにニッケル、アルミニウム、銅などの
金属をコーティングしたｔＪ＆維状強化剤角、あるいは
マイカ、メルク、炭酸カル／ラム、カーボンブラック、
二硫化モリブデンなどのフィラー類から成る強化剤，安
定剤。Further, when mixing the short carbon fiber chips with the matrix, for example, long fibers and short fibers such as other types of carbon fibers, glass fibers, aramid fibers, silicon carbide fibers, boron fibers, voice cars, etc., nickel, aluminum, tJ & fibrous reinforcement horn coated with metal such as copper, or mica, Merck, Cal/Rum carbonate, carbon black,
A reinforcing agent and stabilizer consisting of fillers such as molybdenum disulfide.
滑剤．その他添加剤など企加えることができる。Lubricant. Other additives can be added.
発明の効果
本発明の集束化炭素短繊維チップは集束性て優れたもの
であり、これを用いて繊維強化成形材料を製造する場合
には，該炭素短繊維チップとマトリックスとのトライブ
レンド性、該炭素短繊維チップ単独又はマトリックスと
のトライブレンド物の押出し磯への供給安定性，押出し
機から押出されるストランドの吐出速度均一性．ストラ
ンド切れに対する安定性などが極めて良好であって、繊
維強化成形材料の生産性が大幅に向上する。Effects of the Invention The bundled short carbon fiber chips of the present invention have excellent bundling properties, and when producing a fiber-reinforced molding material using the same, tri-blending properties between the short carbon fiber chips and the matrix, Stability of feeding the short carbon fiber chips alone or a tri-blend with the matrix to the extrusion port, and uniformity of the discharge speed of the strands extruded from the extruder. The stability against strand breakage is extremely good, and the productivity of fiber-reinforced molding materials is greatly improved.
さらに、該繊維強化成形材料において、炭素短繊維テッ
プのマトリックスに対する分散性及び炭素短繊維チップ
とマトリックスとの親和性が優れているため、この成形
（オ科を用いて得られる成形品の各種物性は極りで良好
な値？示ｔ０このように、不発明の集束化炭素短繊維チ
ップは工業的価値の極めて高いものである。Furthermore, in this fiber-reinforced molding material, the dispersibility of the short carbon fiber chips in the matrix and the affinity between the short carbon fiber chips and the matrix are excellent, so the various physical properties of the molded product obtained using this molding The value of t0 is extremely good.As described above, the uninvented bundled short carbon fiber chips have extremely high industrial value.
実施例 次に実施列によって不発明をさらに詳細に説明する。Example Next, the invention will be explained in more detail with reference to the implementation sequence.
なお、各種物性は次のようにして測定した。In addition, various physical properties were measured as follows.
（１） エポキシ化合物の融点
ホットプレート付き顕微鏡型微量融点測定機を用いて液
状化する温度を測定する。(1) Melting point of epoxy compound Measure the temperature at which it liquefies using a microscopic melting point measuring device equipped with a hot plate.
（２） エポキン化合物の分子量 ケルバーミエーンヨン・クロマトグラフィー法による。(2) Molecular weight of Epoquine compound By Kerbermienjon chromatography method.
（３）炭素短繊維チップのかさ密度
５０−メスシリンダーに炭素短繊維チップを充填したの
ち、メスシリンダーに上下の衝撃的振動を与え、平衡に
達した炭素短繊維チップの体積でその重さを除して求め
る。(3) Bulk density of carbon short fiber chips: 50 - After filling a measuring cylinder with carbon short fiber chips, apply vertical impact vibration to the measuring cylinder, and calculate the weight by the volume of the carbon short fiber chips that has reached equilibrium. Find by dividing.
（４）炭素短繊維チップの安息角
高さｌｏｍに固定した■型漏＋から、炭素短繊維チップ
を下方の水平面上に自然落下させ、山状に堆積した炭素
短慮イ１［チップの傾斜面の傾き角度を（ｉｌｌ定する
。(4) The carbon short fiber chips were allowed to fall naturally onto the horizontal plane below from the mold leakage fixed at the angle of repose of the carbon short fiber chips at a height lom. Define the inclination angle of (ill).
（５）炭素短繊維チップの集束性
炭素短繊維ナソゾ全高速ミキサーで一定時間かきませた
のち、該炭素短繊維チップの開陳程度から、集束性の良
否を１〜３の３段階で評価する。(5) Cohesiveness of short carbon fiber chips After agitating the short carbon fibers in a Nasozo full-speed mixer for a certain period of time, the quality of convergence is evaluated on a scale of 1 to 3 based on the degree of opening of the short carbon fiber chips.
３が最良値である。3 is the best value.
（６）炭素短ｇ１．維強化成形品の力学的物性Ｊ工Ｓ
Ｋ６８１０に姑（処しテｆ”’Ｉ 定ｔ ル。(6) Short carbon g1. Mechanical properties of fiber-reinforced molded products J Engineering S
K6810 was treated by her mother-in-law.
実施例１
（Ａ） 炭素短繊維チップの製造
ポリアクリロニトリルを原料とする炭素化繊維１２．０
００本を分子量約１，０００、融点７５〜８０℃のビス
フェノールΔ４１１！エポキシ樹脂とメチルエチルケト
ンに溶解したｍ級（濃度１０重量幅）中に含浸させたの
ち、１３０〜１５０℃で１０分間乾燥し、さらに切断機
で６朋の長さに切断して炭素短繊維チップを製造した。Example 1 (A) Production of short carbon fiber chips Carbonized fiber 12.0 made from polyacrylonitrile as raw material
Bisphenol Δ411 with a molecular weight of approximately 1,000 and a melting point of 75-80°C! After impregnating it in m-class (concentration 10 weight range) dissolved in epoxy resin and methyl ethyl ketone, it was dried at 130 to 150°C for 10 minutes, and then cut into 6 lengths with a cutting machine to obtain short carbon fiber chips. Manufactured.
得られた炭素短繊維チップのかさ密度は３７０ｙ７ｔ、
安息角は４１０．集束性は３、エポキシ化合物宮有量は
５．１重量％であった。The bulk density of the obtained short carbon fiber chips was 370y7t,
The angle of repose is 410. The convergence was 3, and the amount of epoxy compound was 5.1% by weight.
（Ｂ） 炭素短繊維強化成形材料の製造前記炭素短繊
維チップ３０重量部とナイロン−６６樹脂ベレット７０
重量部とをＶ型ミキサーでトライブレンドした。(B) Production of short carbon fiber reinforced molding material 30 parts by weight of the short carbon fiber chips and 70 parts by weight of nylon-66 resin pellets
Parts by weight were triblended using a V-type mixer.
このトライブレンド物をスクリュー・フィーダー付きの
二軸押出機で練合・押出しして得られたストランドを一
ペレタイズし、炭素短繊維強化成形材料を製造した。This triblend was kneaded and extruded using a twin-screw extruder equipped with a screw feeder, and the resulting strands were pelletized to produce a short carbon fiber reinforced molding material.
本実施例では、二軸押出機を１時間遅、ｆｆｌ して運
転したが、スクリュー・フィーダーでの炭素短繊維の開
繊による供給停止や押出されたストランドの切断などの
トラブルは発生しなかった・このようにして得られた炭
素短繊維強化成形材料を射出成形したテストピースの引
張強度は２，６００Ｋｇ／ ｃＭ、曲げ強度は３ ＋
８００ Ｋ９ ／ ｃａ、■ｚｏｄ衝撃値は９．５に９
・ｃｍ／ｃｍであった。In this example, the twin-screw extruder was operated one hour late at ffl, but no problems such as supply stoppage or breakage of the extruded strands due to opening of the short carbon fibers in the screw feeder occurred.・The tensile strength of the test piece injection-molded with the carbon short fiber reinforced molding material obtained in this way was 2,600 Kg/cM, and the bending strength was 3 +
800 K9/ca, ■zod impact value is 9.5 to 9
・It was cm/cm.
比！ｌ！２例１
実施例１において、エポキン化合物として、分子量約４
００、室温で液状のビスフェノールＡ型エポキシ樹脂を
用いた以外は、実施例１と全く同様にして炭素短繊維チ
ップを製造し、さらに炭素短繊維強化成形材料を作成し
友。ratio! l! 2 Example 1 In Example 1, the Epoquine compound has a molecular weight of about 4
00. Short carbon fiber chips were produced in exactly the same manner as in Example 1, except that bisphenol A type epoxy resin which is liquid at room temperature was used, and a short carbon fiber reinforced molding material was also produced.
炭素短繊維チップのかさ密度は２１０９／ｌ、安息角は
６０°、集束性はｌ、バインダー含有量は５．２重量％
であっに０
また、二軸押出機運転時において、スクリュー・フィー
ダーでの炭素短繊維の詰りゃ押出されたストランドの切
断が多発した。The bulk density of short carbon fiber chips is 2109/l, the angle of repose is 60°, the convergence is 1, and the binder content is 5.2% by weight.
Furthermore, during operation of the twin-screw extruder, the screw feeder was clogged with short carbon fibers and the extruded strands were frequently broken.
７４）られた成形（Ａ利の引張強度は２ 、３００ Ｋ
９／ ｃｎｌ、曲は強度は：ｌ、 ４００ Ｋ９／ｃｎ
Ｌ、Ｉｚｏｄ衝撃値は８．２に９・ｃｍ ／ ｃｍであ
ったり
実施例２〜８．比較しＩＩ ２〜４
次表に示した条件で、実施例１と同様にして炭素短繊維
チップを製清し、さらに炭素短繊維強化Ｉ戎１し桐材を
作成した。各物性及び押出し性全該表π示す〇
ただし、実施例３，４においては、バインダーとして、
該衣に記したエポキン化合物１００重量部、ホノクール
トホリオキ／メチレンノニルフェニルエ−チルとの混合
′吻ｌＯ市イ：１部及び１０００重量“力・うＪｊｙる
エマルジョンヲ用いた。74) The tensile strength of the molding (A) is 2,300 K.
9/ cnl, the strength of the song is: l, 400 K9/cn
L, Izod impact value was 8.2 to 9 cm/cm, and Examples 2 to 8. Comparison II 2 to 4 Under the conditions shown in the following table, carbon short fiber chips were purified in the same manner as in Example 1, and further carbon short fiber reinforcement I was made into paulownia wood. All physical properties and extrudability are shown in the table. However, in Examples 3 and 4, as a binder,
A mixed emulsion of 100 parts by weight of the Epoquin compound mentioned above, 1 part by weight and 1000 parts by weight of Honokurto Horioku/methylene nonylphenyl ethyl was used.
／、
手続補正書
昭和５９年１０月１７日
特許庁長官 志 賀 学 殿
２、発明の名称
集束化炭素短繊維チップ
３、補正をする者
事件との関係 特許出願人
大阪府大阪市北区堂島浜１丁目２番６号（００３）旭化
成工業株式会社
代表者 宮 崎 輝
４、代理人
東京都港区新橋２丁目２番２号川志満・邦信ビル８階５
、補正命令の日付 自 発
６、補正により増加する発明の数 〇［（６）炭素短
繊維強化成形品の力学的物性８、補正の内容
（１） 特許請求の範囲を別紙のとおり訂正します。/, Procedural amendment October 17, 1980 Manabu Shiga, Commissioner of the Patent Office 2, Name of the invention Fused carbon short fiber chip 3, Person making the amendment Relationship to the case Patent applicant Dojimahama, Kita-ku, Osaka-shi, Osaka Prefecture 1-2-6 (003) Asahi Kasei Kogyo Co., Ltd. Representative Teru Miyazaki 4, Agent Kawashima Kunishin Building 8th floor 5, 2-2-2 Shinbashi, Minato-ku, Tokyo
, Date of amendment order Voluntary 6, Number of inventions increased by amendment 〇 [(6) Mechanical properties of short carbon fiber reinforced molded products 8, Contents of amendment (1) The scope of claims is amended as shown in the attached sheet. .
（２）明！！ｌｌＩ書第３ページ９行の「炭素短繊維」
を「炭素繊維」に訂正します。(2) Ming! ! “Short carbon fiber” on page 3 of book llI, line 9
Correct to "carbon fiber".
（３） 同第１６行の「押出し機」を「押出機」に訂正
します。(3) Correct “extruder” in line 16 to “extruder”.
（４） ｌＪｌ’ｓ１５〜１６行の［ポリフェニレン
サルファイド」を１ポリフエニレンサルフアイド］に訂
正します。(4) Correct [Polyphenylene Sulfide] in lines 15-16 of lJl's to 1 Polyphenylene Sulfide].
（５）同第７ペーノ第１５行の「４５度」を「４５°」
に訂正します。(5) "45 degrees" in the 15th line of the 7th peno is "45°"
I will correct it.
（６）同第１０ベーノ第１７行及び第１８行の１チツプ
」を削除します。(6) 1 chip in lines 17 and 18 of the 10th Beno will be deleted.
（７）Ｉｌｌ １ベージ１’Ｓ１１行の「ゲルパーミェ
ーション」を［ゲル・パーミェーション」に訂正します
。(7) Ill Correct "gel permeation" in line 1'S11 of page 1 to "gel permeation".
（８）同第１２ペーノ第８〜９行の［（６）炭素短繊維
強化成形品の力学的物性ＪＩＳ Ｋ ・・・測定する。(8) Lines 8 to 9 of the 12th paper [(6) Mechanical properties of short carbon fiber reinforced molded product JIS K...Measure.
」を以下のとおり訂正します。” is corrected as follows.
！
特許請求の範囲
（９） 同第１４ページ第５行の「バイングー含有量」
を「エポキシ化合物含有量」に訂正します。! Claim (9) “Bingu content” on page 14, line 5
will be corrected to "epoxy compound content".
（１０） 同第１５ページ第１行目のｒｌｏｏＯ重量
部」の前に「水」を加入します。(10) Add "water" in front of "rlooO weight parts" in the first line of page 15.
１ 分子量６ｏｏ〜５，０００の室温で固体状のエポキ
シ化合物を主成分としたバイングーにより集束された多
数の炭素短繊維で構成され、全１０「ム」−へエポキシ
化合物の含有量０．１〜１０重量％、かさ密度３００ｇ
、Ｑ’以上、安息角５０°以下を有する集束化炭素短ａ
ｍチ・７プ。1 Consists of a large number of short carbon fibers bundled together by a binder whose main component is an epoxy compound that is solid at room temperature with a molecular weight of 6oo to 5,000, and the content of the epoxy compound is 0.1 to 10 mm in total. 10% by weight, bulk density 300g
, Q' or more, and a focused carbon short a having an angle of repose of 50° or less
m chi 7 pu.
Claims (1)
シ化合物を主成分としたバインダーにより集束された多
数の炭素短繊維で構成され、該エポキシ化合物の含有量
０．１〜１０重量％、かさ密度３００ｇ／ｌ以上、安息
角５０°以下を有する集束化炭素短繊維チップ。1 Consists of a large number of short carbon fibers bound together by a binder mainly composed of an epoxy compound with a molecular weight of 600 to 5,000 that is solid at room temperature, with a content of the epoxy compound of 0.1 to 10% by weight, and a bulk density. A bundled short carbon fiber chip having an angle of repose of 300 g/l or more and a repose angle of 50° or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18908584A JPS6166615A (en) | 1984-09-10 | 1984-09-10 | Bundled short carbon fiber chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18908584A JPS6166615A (en) | 1984-09-10 | 1984-09-10 | Bundled short carbon fiber chip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6166615A true JPS6166615A (en) | 1986-04-05 |
| JPH0526642B2 JPH0526642B2 (en) | 1993-04-16 |
Family
ID=16235066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18908584A Granted JPS6166615A (en) | 1984-09-10 | 1984-09-10 | Bundled short carbon fiber chip |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6166615A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0192234A (en) * | 1987-10-04 | 1989-04-11 | Mitsubishi Kasei Corp | Carbon short fiber aggregate and fiber reinforced thermoplastic resin composition comprising said aggregate is reinforcing material |
| JPH02129229A (en) * | 1988-11-10 | 1990-05-17 | Toho Rayon Co Ltd | Chopped carbon fiber strand and preparation thereof |
| EP0469181A2 (en) * | 1989-07-24 | 1992-02-05 | Phillips Petroleum Company | High strength thermoplastic resin/carbon fiber composites and methods of production |
| JP2005125581A (en) * | 2003-10-23 | 2005-05-19 | Daicel Chem Ind Ltd | Carbon long fiber-reinforced resin pellet, its manufacturing method, and molded article |
| JP2013087208A (en) * | 2011-10-19 | 2013-05-13 | Aica Kogyo Co Ltd | Epoxy resin floor coating composition |
| WO2023167102A1 (en) * | 2022-03-04 | 2023-09-07 | 三菱ケミカル株式会社 | Method for producing carbon fiber bundle composite, and carbon fiber bundle composite |
| WO2024048416A1 (en) * | 2022-08-31 | 2024-03-07 | 三菱ケミカル株式会社 | Method of producing carbon fiber bundle composite and method of producing carbon fiber composite sheet |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0584536U (en) * | 1992-04-23 | 1993-11-16 | 三菱自動車工業株式会社 | Vehicle cab |
-
1984
- 1984-09-10 JP JP18908584A patent/JPS6166615A/en active Granted
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0192234A (en) * | 1987-10-04 | 1989-04-11 | Mitsubishi Kasei Corp | Carbon short fiber aggregate and fiber reinforced thermoplastic resin composition comprising said aggregate is reinforcing material |
| JPH02129229A (en) * | 1988-11-10 | 1990-05-17 | Toho Rayon Co Ltd | Chopped carbon fiber strand and preparation thereof |
| JPH0583044B2 (en) * | 1988-11-10 | 1993-11-24 | Toho Rayon Kk | |
| EP0469181A2 (en) * | 1989-07-24 | 1992-02-05 | Phillips Petroleum Company | High strength thermoplastic resin/carbon fiber composites and methods of production |
| EP0469181A3 (en) * | 1989-07-24 | 1992-05-06 | Phillips Petroleum Company | High strength thermoplastic resin/carbon fiber composites and methods of production |
| JP2005125581A (en) * | 2003-10-23 | 2005-05-19 | Daicel Chem Ind Ltd | Carbon long fiber-reinforced resin pellet, its manufacturing method, and molded article |
| JP2013087208A (en) * | 2011-10-19 | 2013-05-13 | Aica Kogyo Co Ltd | Epoxy resin floor coating composition |
| WO2023167102A1 (en) * | 2022-03-04 | 2023-09-07 | 三菱ケミカル株式会社 | Method for producing carbon fiber bundle composite, and carbon fiber bundle composite |
| WO2024048416A1 (en) * | 2022-08-31 | 2024-03-07 | 三菱ケミカル株式会社 | Method of producing carbon fiber bundle composite and method of producing carbon fiber composite sheet |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0526642B2 (en) | 1993-04-16 |
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