JPS61209120A - Manufacture of electrically conductive termoplastic resin molding - Google Patents
Manufacture of electrically conductive termoplastic resin moldingInfo
- Publication number
- JPS61209120A JPS61209120A JP60051384A JP5138485A JPS61209120A JP S61209120 A JPS61209120 A JP S61209120A JP 60051384 A JP60051384 A JP 60051384A JP 5138485 A JP5138485 A JP 5138485A JP S61209120 A JPS61209120 A JP S61209120A
- Authority
- JP
- Japan
- Prior art keywords
- molding
- thermoplastic resin
- static mixing
- metal fibers
- short metal
- 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.)
- Pending
Links
- 238000000465 moulding Methods 0.000 title claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 229920006013 termoplastic resin Polymers 0.000 title 1
- 239000000835 fiber Substances 0.000 claims abstract description 54
- 238000002156 mixing Methods 0.000 claims abstract description 29
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 23
- 230000003068 static effect Effects 0.000 claims abstract description 19
- 229910052751 metal Inorganic materials 0.000 claims description 35
- 239000002184 metal Substances 0.000 claims description 35
- 229920005989 resin Polymers 0.000 claims description 9
- 239000011347 resin Substances 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 239000011230 binding agent Substances 0.000 claims description 4
- 229920000178 Acrylic resin Polymers 0.000 claims description 3
- 239000004925 Acrylic resin Substances 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 239000004952 Polyamide Substances 0.000 claims description 3
- 239000004793 Polystyrene Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229920002647 polyamide Polymers 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 3
- 229920000098 polyolefin Polymers 0.000 claims description 3
- 229920002223 polystyrene Polymers 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 229930182556 Polyacetal Natural products 0.000 claims description 2
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 2
- 239000004734 Polyphenylene sulfide Substances 0.000 claims description 2
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 claims description 2
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 claims description 2
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims description 2
- 239000004417 polycarbonate Substances 0.000 claims description 2
- 229920000515 polycarbonate Polymers 0.000 claims description 2
- 229920006324 polyoxymethylene Polymers 0.000 claims description 2
- 229920006380 polyphenylene oxide Polymers 0.000 claims description 2
- 229920000069 polyphenylene sulfide Polymers 0.000 claims description 2
- 238000001746 injection moulding Methods 0.000 abstract description 7
- 238000004898 kneading Methods 0.000 abstract description 3
- 239000006185 dispersion Substances 0.000 abstract description 2
- 238000001125 extrusion Methods 0.000 abstract description 2
- 239000008188 pellet Substances 0.000 description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000004513 sizing Methods 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 241000283986 Lepus Species 0.000 description 1
- 229920002292 Nylon 6 Polymers 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 229920005601 base polymer Polymers 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- QHIWVLPBUQWDMQ-UHFFFAOYSA-N butyl prop-2-enoate;methyl 2-methylprop-2-enoate;prop-2-enoic acid Chemical compound OC(=O)C=C.COC(=O)C(C)=C.CCCCOC(=O)C=C QHIWVLPBUQWDMQ-UHFFFAOYSA-N 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000011231 conductive filler Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 235000003642 hunger Nutrition 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000006082 mold release agent Substances 0.000 description 1
- 239000000088 plastic resin Substances 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000037351 starvation Effects 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Classifications
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/05—Filamentary, e.g. strands
-
- 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
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
- B29K2105/12—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of short lengths, e.g. chopped filaments, staple fibres or bristles
-
- 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
- B29K2705/00—Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
-
- 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
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0003—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular electrical or magnetic properties, e.g. piezoelectric
- B29K2995/0005—Conductive
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Conductive Materials (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は面発熱体として使用したり、ＩＣやＬＳＩを内
蔵した各種の電子電気機器より放射される不要電磁波の
シールド部品として好適な導電性熱可塑性樹脂成形品の
製造方法に関する。Detailed Description of the Invention (Industrial Application Field) The present invention has a conductive property suitable for use as a surface heating element or as a shielding component for unnecessary electromagnetic waves emitted from various electronic and electrical devices incorporating ICs and LSIs. This invention relates to a method for manufacturing thermoplastic resin molded products.
（従来の技術）
熱可塑性樹脂に金属短繊維などの導電性フイラ−を配合
し、導電性を付与する方法は広く知られている。金属短
繊維を混入して導電性樹脂を得る場合アスペクト比が大
きい方が導電性が良くなることは知られているが、繊維
径が細く繊維長が長くなるに従ってファイバーボールが
できやすく、嵩高となって熱可塑性樹脂への配合混線が
難しくなり、また配合混線ができても金属短繊維の破損
を生じ導電性が低下するという問題がある。この問題を
解決する方法として、集束した金属短繊維と熱可塑性樹
脂を配合混練し成形用ペレットとした後、射出成形機等
で成形する方法が提案されている。（特開昭５８−１２
９０８１公報、特開昭５８−１７６２２０公報）。とこ
ろがこの方法では配合混線は容易となりファイバーボー
ル現象も避けられるが、混練工程での金属短繊維の破損
は避けることができない。一方金属長繊維を集束した後
樹脂で覆い続いて切断し、いわゆる高濃度のマスターペ
レットを作り、このマスターペレットとナチニラルペレ
ットを混合し成形することが提案されている（特開昭５
８−１５０２０８）。しかしマスターペレット製造にコ
ストアップの要因となる複雑な工程を要し、また成形品
中の金属短繊維の分散が不均一となる欠点が生じる。(Prior Art) A method of imparting conductivity by blending a conductive filler such as short metal fibers to a thermoplastic resin is widely known. When obtaining a conductive resin by mixing short metal fibers, it is known that the larger the aspect ratio, the better the conductivity. This makes it difficult to mix and mix wires into the thermoplastic resin, and even if blending and wires occur, there is a problem that the short metal fibers are damaged and the conductivity is lowered. As a method to solve this problem, a method has been proposed in which a bundle of short metal fibers and a thermoplastic resin are mixed and kneaded to form pellets for molding, and then molded using an injection molding machine or the like. (Unexamined Japanese Patent Publication No. 58-12
9081, JP-A-58-176220). However, although this method facilitates blending and avoids the fiber ball phenomenon, breakage of the short metal fibers during the kneading process cannot be avoided. On the other hand, it has been proposed to bundle long metal fibers, cover them with resin, and then cut them to create so-called high-concentration master pellets, and then mix and mold these master pellets with natiniral pellets (Japanese Patent Application Laid-Open No. 5-11913).
8-150208). However, the production of master pellets requires a complicated process that increases costs, and also has the disadvantage that the short metal fibers in the molded product are not uniformly dispersed.
（発明が解決しようとする問題点）
本発明は、金属短繊維を熱可塑性樹脂に配合し成形する
過程で生じる金属短繊維の破損及び分散不良の問題並び
に金属短繊維と熱可塑性樹脂の配合混練工程あるいはマ
スターペレットの製造工程によるコストアップの問題を
解決した。(Problems to be Solved by the Invention) The present invention solves the problems of breakage and poor dispersion of short metal fibers that occur during the process of blending short metal fibers with thermoplastic resin and molding, and the problem of mixing and kneading of short metal fibers and thermoplastic resin. Solved the problem of increased costs due to manufacturing process or master pellet manufacturing process.
（間―点を解決する手段）
本発明は熱可塑性樹脂と集束した金属短繊維とを、静的
混合ノズルを装着した成形ｆａにより配合成形すること
を特徴とする導電性熱可塑樹脂成形品の製造方法に関す
るものである。(Means for Solving the Problem) The present invention provides a conductive thermoplastic resin molded product characterized by blending and molding a thermoplastic resin and focused short metal fibers using a molding fa equipped with a static mixing nozzle. This relates to a manufacturing method.
以下本発明の詳細な説明する。The present invention will be explained in detail below.
本発明に使用する熱可塑性樹脂は用途に応じ全ての熱可
塑性樹脂が利用可能であるが、特にポリアミド、ポリエ
ステル、ポリカーボネート、ポリオレフィン、ポリアセ
タール、ポリフェニレンオキサイド、ポリフェニレンサ
ルファイド、ポリウレタン、塩化ビニル樹脂、ポリスチ
レン、ＡＢＳ樹脂、ＡＳ樹脂、アクリル樹脂及びこれら
の変性物又はブレンドが好ましく、また形状はペレット
状、 粒状、粉末状のいずれでも良い。The thermoplastic resin used in the present invention can be any thermoplastic resin depending on the purpose, but in particular polyamide, polyester, polycarbonate, polyolefin, polyacetal, polyphenylene oxide, polyphenylene sulfide, polyurethane, vinyl chloride resin, polystyrene, ABS. Resins, AS resins, acrylic resins, and modified products or blends thereof are preferred, and the shape may be pellets, granules, or powders.
本発明に使用する金属短繊維としては鉄、ステンレス、
銅、黄銅、アルミニウム、ニッケル及ヒこれらの合金の
短繊維、あるいはガラス繊維や炭素繊維の表面に、ニッ
ケルやアルミニウムをコーティングしたものが挙げられ
、特に鉄、銅、アルミニウム及びこれらを含む合金が好
ましい。また金属短繊維のサイズはホッパーからの供給
及び成形が可能であれば良く、特に繊維径２〜１００μ
。The short metal fibers used in the present invention include iron, stainless steel,
Examples include copper, brass, aluminum, nickel, and short fibers of these alloys, or glass fibers and carbon fibers coated with nickel or aluminum, and iron, copper, aluminum, and alloys containing these are particularly preferred. . In addition, the size of the short metal fibers may be as long as it can be fed from a hopper and formed, and in particular, the fiber diameter is 2 to 100 μm.
.
繊維長２〜２０ｍｍ、アスペクト比５０〜ａｏｏ。Fiber length 2-20mm, aspect ratio 50-aoo.
の範囲が好ましい。熱可塑性樹脂に対する金属短繊維の
配合割合は、必要に応じ任意に選択できるが著しく物性
を損なわない様ｌＯ容量チを越えないことが好まし−い
。A range of is preferred. The blending ratio of the short metal fibers to the thermoplastic resin can be arbitrarily selected as required, but it is preferable that the blending ratio does not exceed 1O capacity so as not to significantly impair the physical properties.
本発明に用いる集束剤としては、熱可塑性樹脂の溶液、
エマルジ■ン及び溶融物があり、例えば緘化ビニル樹脂
、酢酸ビニル樹脂、ポリビニルアルコール、アクリル樹
脂、ポリオレフィン、ポリスチレン、ポリアミド、ポリ
エステル、ポリウレタンが挙げられ、集束剤とベースポ
リマーは同一でもまた異なっていてもペースポリマーの
特性を阻害するものでなければ使用可能である。また集
束剤の割合は、成形時にホッパーより金属短繊維が供給
できる程度実質的に集束される量であれば良く、好まし
くは集束剤と金属短繊維の合計量の２〜４０重量％であ
る。The sizing agent used in the present invention includes a thermoplastic resin solution,
There are emulsions and melts, such as vinyl resin, vinyl acetate resin, polyvinyl alcohol, acrylic resin, polyolefin, polystyrene, polyamide, polyester, and polyurethane, and the sizing agent and base polymer may be the same or different. It can also be used as long as it does not impede the properties of the pace polymer. Further, the proportion of the sizing agent may be any amount that can substantially bundle the short metal fibers to the extent that they can be supplied from the hopper during molding, and is preferably 2 to 40% by weight of the total amount of the sizing agent and short metal fibers.
集束した金属短繊維の製造方法としては、例えば伸長法
により得られた金属長繊維を複数本束ね、集束剤を含浸
あるいは被覆した後切断する方法が挙げられる。Examples of methods for producing bundled short metal fibers include a method in which a plurality of long metal fibers obtained by an elongation method are bundled, impregnated or coated with a binding agent, and then cut.
本発明に使用する静的混合ノズルは、例えば短形の板を
１８０℃ひねった形状のいわゆるケエックス型静的混合
素子を有する成形機ノズルが挙げられ、この型のノズル
は市販されている（ケニツクス社製スーパーノズル）。The static mixing nozzle used in the present invention is, for example, a molding machine nozzle having a so-called KEX-type static mixing element, which is a rectangular plate twisted by 180°C, and this type of nozzle is commercially available (Kenix). super nozzle).
また静的混合素子数は金属短繊維の分散を行う１こ十分
な数であれば良く、過度の使用は金属短繊維の破損ある
いは成形時の圧力損失を招くため８〜１５の範囲が好ま
しい。Further, the number of static mixing elements may be one sufficient to disperse the short metal fibers, and is preferably in the range of 8 to 15 since excessive use may cause breakage of the short metal fibers or pressure loss during molding.
また成形方法は押出成形又は射出成形が利用可能で、静
的混合ノズルを使用する以外は通常の成形条件が適用で
き、スクＩＪ、−回転数は熱可塑性樹脂をシリンダーに
充填し可塑化させるに十分な回転であれば良く、過度の
混線は避けた方が良い。In addition, extrusion molding or injection molding can be used as the molding method, and normal molding conditions can be applied except for using a static mixing nozzle. It is sufficient as long as the rotation is sufficient, and it is better to avoid excessive crosstalk.
特に射出成形機としてはいわゆる飢 状態で供給できる
方式、例えば名機ダイナメルタ方式が好ましい。In particular, as an injection molding machine, it is preferable to use a system that can be supplied under starvation conditions, such as the famous Dynamelta system.
本発明の導電性熱可塑性樹脂成形品の製造方法は、熱可
塑性樹脂と集束した金属短繊維を静的混合ノズルを装着
した成形機により配合成形を行う、いわゆるダイレクト
成形必修であり、集束していない金属短繊維を使用した
場合はファイバーボール現象等発生し金属短繊維の配合
が困難となり、一方静的混合ノズルを装着していない成
形機にてダイレクト成形を行うと、金属短繊維の分散が
悪く、導電性、成形品外観、他の物性が低く品質の不均
一な成形品しか得ることができない。また、金属短繊維
と熱可塑性樹脂を予め混練し、次に成形する方法では金
属短繊維の破損が生じ導電性の低下が生じる。The method for manufacturing conductive thermoplastic resin molded products of the present invention involves so-called direct molding, in which thermoplastic resin and bundled short metal fibers are mixed and molded using a molding machine equipped with a static mixing nozzle. If short metal fibers are used, a fiber ball phenomenon will occur, making it difficult to blend the short metal fibers.On the other hand, if direct molding is performed with a molding machine that is not equipped with a static mixing nozzle, the short metal fibers will not be dispersed. However, the conductivity, appearance of the molded product, and other physical properties are poor, and only molded products of uneven quality can be obtained. Furthermore, in a method in which short metal fibers and a thermoplastic resin are kneaded in advance and then molded, the short metal fibers are damaged, resulting in a decrease in conductivity.
本発明の成形品にはさらに必要に応じ、難燃剤。The molded product of the present invention may further contain a flame retardant, if necessary.
難燃助剤、無機充填剤、結晶化促進剤、酸化防止剤、離
型剤、少量の多官能性化合物等を配合することができる
。Flame retardant aids, inorganic fillers, crystallization promoters, antioxidants, mold release agents, small amounts of polyfunctional compounds, etc. can be blended.
（実施例） 以下実施例を用いて本発明を更に説明する。(Example) The present invention will be further explained below using Examples.
実施例１
熱可塑性樹脂にポリエチレンテレフタレート（カネボウ
合繊■製ベルペッ）ＥＦＧ−６’）集束した金属短繊維
として、繊維径８μのステンレス繊維１０，０００本を
集束剤で集束した後（集束剤含量１２重量％）５■に切
断したもの（日本端線■製）を用い、ステンレス繊維が
２容量囁になる割合で混合した後静的混合素子を１２有
する静的混合ノズルを装着した８、８オンス名機ダイナ
メルタ射出成形機（名機製作所■製）にて２００ Ｗ
Ｘ ２００■Ｘ３露のプレートをダイレクト成形し、体
積固有抵抗を測定した。組成、成形条件及び体積固有抵
抗は表−１に示す。Example 1 10,000 stainless steel fibers with a fiber diameter of 8 μm were bundled with a binding agent as short metal fibers made of polyethylene terephthalate (Belpet manufactured by Kanebo Gosen ■) EFG-6' in a thermoplastic resin (binding agent content: 12 μm). % by weight) cut into 5 pieces (manufactured by Nippon Hasen), mixed with stainless steel fibers at a ratio of 2 volumes, and then fitted with a static mixing nozzle with 12 static mixing elements to 8.8 oz. 200 W with Meiki Dynamelta injection molding machine (manufactured by Meiki Seisakusho ■)
A plate of 200×3×2 was directly molded, and its volume resistivity was measured. The composition, molding conditions, and volume resistivity are shown in Table-1.
実施例２
熱可塑性樹脂にナイロン−６（カネボウ合繊■製ＭＣ−
１０２）を用いる以外は実施例１と同様にプレートを成
形した。結果は表−１に示す。Example 2 Thermoplastic resin and nylon-6 (MC- manufactured by Kanebo Gosen ■)
A plate was molded in the same manner as in Example 1 except that 102) was used. The results are shown in Table-1.
比較例１及び２
熱可塑性樹脂及び金属短繊維を実施例１と同じ組成とし
、比較例１においては、静的混合ノズルではなく普通の
オープンノズルを装着した射出成形機にて成形し、比較
例２では２５■径単軸押出機にて熱可塑性樹脂と金属短
繊維を予め混練した後オープンノズル付射出成形機にて
成形を行った。Comparative Examples 1 and 2 The thermoplastic resin and short metal fibers had the same composition as in Example 1, and in Comparative Example 1, molding was performed using an injection molding machine equipped with an ordinary open nozzle instead of a static mixing nozzle. In No. 2, the thermoplastic resin and short metal fibers were kneaded in advance using a 25-diameter single-screw extruder, and then molded using an injection molding machine equipped with an open nozzle.
（発明の効果）
実施例において明らかな様に、本発明の熱可塑性樹脂と
集束した金属短繊維とを、静的混合ノズルを装着した成
形機により配合、成形することを特徴とする導電性熱可
塑性樹脂成形品の製造方法によれば、優れた導電性を有
する成形品を容易に得ることができる。(Effects of the Invention) As is clear from the examples, the conductive heat treatment method is characterized in that the thermoplastic resin of the present invention and bundled short metal fibers are blended and molded using a molding machine equipped with a static mixing nozzle. According to the method for producing a plastic resin molded product, a molded product with excellent conductivity can be easily obtained.
〃 カネボウ合繊株式会社Kanebo Gosen Co., Ltd.
Claims (7)
合ノズルを装着した成形機により配合、成形することを
特徴とする導電性熱可塑性樹脂成形品の製造方法。(1) A method for producing a conductive thermoplastic resin molded article, which comprises blending and molding a thermoplastic resin and bundled short metal fibers using a molding machine equipped with a static mixing nozzle.
〜２０ｍｍ、アスペクト比（繊維長対繊維径の比）が５
０〜３０００である特許請求の範囲第１項記載の方法。(2) The fiber diameter of short metal fibers is 2 to 100μ, and the fiber length is 2
~20mm, aspect ratio (ratio of fiber length to fiber diameter) is 5
0-3000. The method according to claim 1.
含む合金である特許請求の範囲第１項又は第２項記載の
方法。(3) The method according to claim 1 or 2, wherein the short metal fibers are iron, copper, aluminum, or an alloy containing these.
れたものである特許請求の範囲第１項記載の方法。(4) The method according to claim 1, wherein the short metal fibers are bundled with 2 to 40% by weight of a binding agent.
量％を越えない特許請求の範囲第１項記載の方法。(5) The method according to claim 1, in which the blended amount of short metal fibers does not exceed 10% by volume based on the thermoplastic resin.
カーボネート、ポリオレフィン、ポリアセタール、ポリ
フェニレンオキサイド、ポリフェニレンサルファイド、
ポリウレタン、塩化ビニル樹脂、ポリスチレン、ＡＢＳ
樹脂、ＡＳ樹脂、アクリル樹脂及びこれらの変性物又は
ブレンドである特許請求の範囲第１項記載の方法。(6) Thermoplastic resin is polyamide, polyester, polycarbonate, polyolefin, polyacetal, polyphenylene oxide, polyphenylene sulfide,
Polyurethane, vinyl chloride resin, polystyrene, ABS
The method according to claim 1, which is a resin, an AS resin, an acrylic resin, and a modified product or blend thereof.
状の静的混合素子を３〜１５有する特許請求の範囲第１
項記載の方法。(7) Claim 1 in which the static mixing nozzle has 3 to 15 static mixing elements each having a shape of a rectangular plate twisted by 180 degrees.
The method described in section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60051384A JPS61209120A (en) | 1985-03-13 | 1985-03-13 | Manufacture of electrically conductive termoplastic resin molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60051384A JPS61209120A (en) | 1985-03-13 | 1985-03-13 | Manufacture of electrically conductive termoplastic resin molding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61209120A true JPS61209120A (en) | 1986-09-17 |
Family
ID=12885450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60051384A Pending JPS61209120A (en) | 1985-03-13 | 1985-03-13 | Manufacture of electrically conductive termoplastic resin molding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61209120A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0317905A (en) * | 1989-06-13 | 1991-01-25 | Toshiba Chem Corp | Conductive resinous composition and molded material thereof |
| US6896828B2 (en) | 2001-11-13 | 2005-05-24 | Dow Global Technologies Inc. | Electrically conductive thermoplastic polymer composition |
| US6936191B2 (en) | 2001-11-13 | 2005-08-30 | Doe Global Technologies Inc. | Electrically conductive thermoplastic polymer composition |
-
1985
- 1985-03-13 JP JP60051384A patent/JPS61209120A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0317905A (en) * | 1989-06-13 | 1991-01-25 | Toshiba Chem Corp | Conductive resinous composition and molded material thereof |
| US6896828B2 (en) | 2001-11-13 | 2005-05-24 | Dow Global Technologies Inc. | Electrically conductive thermoplastic polymer composition |
| US6936191B2 (en) | 2001-11-13 | 2005-08-30 | Doe Global Technologies Inc. | Electrically conductive thermoplastic polymer composition |
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