JPH0751644B2 - Method for producing granular conductive resin composition - Google Patents
Method for producing granular conductive resin compositionInfo
- Publication number
- JPH0751644B2 JPH0751644B2 JP62285047A JP28504787A JPH0751644B2 JP H0751644 B2 JPH0751644 B2 JP H0751644B2 JP 62285047 A JP62285047 A JP 62285047A JP 28504787 A JP28504787 A JP 28504787A JP H0751644 B2 JPH0751644 B2 JP H0751644B2
- Authority
- JP
- Japan
- Prior art keywords
- carbon black
- resin composition
- dbp
- plasticizer
- conductive resin
- 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.)
- Expired - Fee Related
Links
- 239000011342 resin composition Substances 0.000 title claims description 10
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 239000006229 carbon black Substances 0.000 claims description 26
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 claims description 24
- 239000004014 plasticizer Substances 0.000 claims description 23
- 229920005989 resin Polymers 0.000 claims description 14
- 239000011347 resin Substances 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 10
- 229920005992 thermoplastic resin Polymers 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 8
- 238000013329 compounding Methods 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 230000009477 glass transition Effects 0.000 claims description 2
- 235000019241 carbon black Nutrition 0.000 description 23
- 238000000034 method Methods 0.000 description 9
- 229960002380 dibutyl phthalate Drugs 0.000 description 8
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 7
- 238000004898 kneading Methods 0.000 description 5
- 229920000915 polyvinyl chloride Polymers 0.000 description 5
- 239000004800 polyvinyl chloride Substances 0.000 description 5
- -1 and specifically Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- ALKCLFLTXBBMMP-UHFFFAOYSA-N 3,7-dimethylocta-1,6-dien-3-yl hexanoate Chemical compound CCCCCC(=O)OC(C)(C=C)CCC=C(C)C ALKCLFLTXBBMMP-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- SAOKZLXYCUGLFA-UHFFFAOYSA-N bis(2-ethylhexyl) adipate Chemical compound CCCCC(CC)COC(=O)CCCCC(=O)OCC(CC)CCCC SAOKZLXYCUGLFA-UHFFFAOYSA-N 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- GOJCZVPJCKEBQV-UHFFFAOYSA-N Butyl phthalyl butylglycolate Chemical compound CCCCOC(=O)COC(=O)C1=CC=CC=C1C(=O)OCCCC GOJCZVPJCKEBQV-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 239000000020 Nitrocellulose Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 1
- FJWGYAHXMCUOOM-QHOUIDNNSA-N [(2s,3r,4s,5r,6r)-2-[(2r,3r,4s,5r,6s)-4,5-dinitrooxy-2-(nitrooxymethyl)-6-[(2r,3r,4s,5r,6s)-4,5,6-trinitrooxy-2-(nitrooxymethyl)oxan-3-yl]oxyoxan-3-yl]oxy-3,5-dinitrooxy-6-(nitrooxymethyl)oxan-4-yl] nitrate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](O[N+]([O-])=O)[C@H]1O[N+]([O-])=O)O[C@H]1[C@@H]([C@@H](O[N+]([O-])=O)[C@H](O[N+]([O-])=O)[C@@H](CO[N+]([O-])=O)O1)O[N+]([O-])=O)CO[N+](=O)[O-])[C@@H]1[C@@H](CO[N+]([O-])=O)O[C@@H](O[N+]([O-])=O)[C@H](O[N+]([O-])=O)[C@H]1O[N+]([O-])=O FJWGYAHXMCUOOM-QHOUIDNNSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 150000003014 phosphoric acid esters Chemical class 0.000 description 1
- 125000005498 phthalate group Chemical class 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000005033 polyvinylidene chloride Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 125000005591 trimellitate group Chemical group 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、顆粒状導電性樹脂組成物の製造方法に関する
ものであって、より詳しくは導電性を付与させた樹脂成
型品を好適に与える顆粒状導電性樹脂組成物の製造方法
に関する。Description: TECHNICAL FIELD The present invention relates to a method for producing a granular conductive resin composition, and more specifically, a resin molded product having conductivity is preferably provided. The present invention relates to a method for producing a granular conductive resin composition.
（従来の技術） 近年、カーボンブラックを配合して導電性を付与させた
樹脂成型品が数多く報告、市販等が行なわれており、こ
れらの中では可塑剤を大量に配合し、柔軟性を付与させ
たものも多い。通常これらの製造方法としては、カーボ
ンブラックと樹脂を加熱下、溶融混練し、これに可塑剤
と投入しコンパウンドチップを得る方法、あるいは樹脂
と可塑剤を加熱下、溶融混練しこれにカー黒を投入して
コンパウドチップを得る方法等が知られている。(Prior Art) In recent years, many resin molded products containing carbon black to impart conductivity have been reported and marketed. Among these, a large amount of plasticizer is blended to impart flexibility. There are many things that I made. Usually, as a method for producing these, a method of melting and kneading carbon black and a resin under heating, and then adding a plasticizer to this to obtain a compound chip, or a method of melting and kneading a resin and a plasticizer under heating and kneading black There is known a method of throwing in a compound chip to throw it in.
（発明が解決しようとする問題点） しかしながら、カーボンブラックと樹脂及び可塑剤をそ
のまま成型機に供給する場合には、可塑剤量が多いとカ
ーボンブラックの分散性が極めて悪く、更にはカーボン
ブラックの飛散による作業環境の悪化等の問題点があっ
た。(Problems to be Solved by the Invention) However, when supplying carbon black, resin and plasticizer as they are to the molding machine, the dispersibility of carbon black is extremely poor when the amount of plasticizer is large, and further There were problems such as deterioration of the work environment due to scattering.
また、カーボンブラックの飛散を防止するためにカーボ
ンブラックと樹脂を溶融混練中に可塑剤を投入する等の
コンパウンドチップを作成する場合においては、一度融
点以上の温度下に樹脂がさらされるためポリ塩化ビニル
（PVC）などの熱劣化しやすい樹脂にとっては好ましい
ことではない。In addition, when preparing compound chips such as adding a plasticizer during melt-kneading of carbon black and resin to prevent carbon black from scattering, once the resin is exposed to a temperature above the melting point, polychlorination is performed. Not desirable for resins that are susceptible to thermal degradation such as vinyl (PVC).
（問題点を解決するための手段） そこで、本発明者等は上記の様な問題点を解決するべく
鋭意検討した結果、特定の配合順序で、かつ特定量の可
塑剤を用いることにより、かかる問題点が解消されるこ
とを見い出し、本発明に到達した。(Means for Solving Problems) Therefore, the inventors of the present invention have made diligent studies to solve the above problems, and as a result, by using a plasticizer in a specific compounding order and in a specific amount, The inventors have found that the problem is solved and have reached the present invention.
すなわち、本発明の目的は、得られる成型品でのカーボ
ンブラックの分散性が良好で、カーボンブラックの飛散
による作業環境の悪化が極めて少なく更には溶融混練工
程を必要とせず良く調製されたカーボンブラック、樹脂
及び可塑剤からなる顆粒状導電性樹脂組成物を簡便に製
造し得る方法を提供することにある。そして、その目的
は、カーボンブラックと粉状熱可塑性樹脂とを配合して
得られた混合物に熱可塑性樹脂のガラス転移温度以下で
液状の可塑剤を添加混合して顆粒状の導電性樹脂組成物
を製造する際に、粉状熱可塑性樹脂100重量部に対する
液状の可塑剤の配合部数Ａが下記関係式（１）を満足す
るような量であることを特徴とする顆粒状導電性樹脂組
成物の製造方法 但し0.2≦Ｘ≦１ ρK;液状の可塑剤密度（g/cc） ρDBP;フタル酸ジブチル（DBP）密度（g/cc） CB;カーボンブラック配合部数（樹脂100phrに対して） DBP;カーボンブラックのDBP吸収量（ml/100g） により容易に達成される。That is, the object of the present invention is that the dispersibility of the carbon black in the obtained molded product is good, the deterioration of the working environment due to the scattering of carbon black is extremely small, and the well-prepared carbon black without the need for a melt-kneading step. Another object of the present invention is to provide a method capable of easily producing a granular conductive resin composition comprising a resin and a plasticizer. Then, the purpose is to add a liquid plasticizer at a temperature not higher than the glass transition temperature of the thermoplastic resin to a mixture obtained by blending carbon black and a powdery thermoplastic resin, and mix them to form a granular conductive resin composition. Granule-like conductive resin composition, characterized in that, in the production of, the number A of the liquid plasticizer to 100 parts by weight of the powdery thermoplastic resin is such that the following relational expression (1) is satisfied. Manufacturing method However, 0.2 ≦ X ≦ 1 ρ K ; Liquid plasticizer density (g / cc) ρ DBP ; Dibutyl phthalate (DBP) density (g / cc) CB; Carbon black compounding part (per 100 phr of resin) DBP; Carbon Easily achieved by black DBP absorption (ml / 100g).
以下、本発明を詳細に説明する。Hereinafter, the present invention will be described in detail.
本発明で用いるカーボンブラックは導電性を付与できる
ものであれば、特に限定されるものではないが、好まし
くは平均粒子径が10〜100nm、DBP吸収量が40〜650ml/10
0g、であり、比表面積（N2吸着法）が10〜1600mL/g、か
つ孔径300Å以下の細孔容積（N2吸着法）が0.02〜2.0cc
/gのカーボンブラックを用いるのがよい。The carbon black used in the present invention is not particularly limited as long as it can impart conductivity, but preferably has an average particle size of 10 to 100 nm and a DBP absorption of 40 to 650 ml / 10.
0g is, a specific surface area (N 2 adsorption method) of 10 to 1,600 m L / g, and a pore size 300Å or less of the pore volume (N 2 adsorption method) 0.02~2.0cc
It is better to use / g of carbon black.
また、粉状熱可塑性樹脂としては可塑剤を必要とする樹
脂であれば特に限定されるものではなく、具体的にはポ
リ塩化ビニル、ポリ酢酸ビニル、ポリビニルブチラー
ル、ポリビニルホルマール、ポリ塩化ビニリデン、酢酸
セルロース、硝酸セルロース、ポリビニルアルコール等
が挙げられ、これらの樹脂が粉砕されて平均粒径2mm以
下、好ましくは0.5mm以下としたものが用いられる。Further, the powdery thermoplastic resin is not particularly limited as long as it is a resin that requires a plasticizer, and specifically, polyvinyl chloride, polyvinyl acetate, polyvinyl butyral, polyvinyl formal, polyvinylidene chloride, acetic acid. Cellulose, cellulose nitrate, polyvinyl alcohol and the like can be mentioned, and those obtained by crushing these resins to have an average particle size of 2 mm or less, preferably 0.5 mm or less are used.
次に、室温下で液状の可塑剤とは、通常上記の熱可塑性
樹脂の可塑剤であればよく、具体的にはジー（２−エチ
ルヘキシル）フタレート（DOP）、ジブチルフタレート
（DBP）等のフタル酸エステル系、ジー（２−エチルヘ
キシル）アジペート（DAP）、ジイソデシルアジペート
（DIDA）等の二塩基酸エステル系、グリコールエステル
系、脂肪酸エステル系、エポキシ系、リン酸エステル
系、あるいはトリー（２−エチルヘキシル）トリメリテ
ート（TOT）、ブチルフタリル−ブチルグリコレート（B
PBG）、更には塩素化パラフィン等が挙げられる。Next, the liquid plasticizer at room temperature may be any plasticizer of the above-mentioned thermoplastic resin, and specifically, phthalates such as di (2-ethylhexyl) phthalate (DOP) and dibutylphthalate (DBP). Acid ester type, dibasic acid type such as di (2-ethylhexyl) adipate (DAP) and diisodecyl adipate (DIDA), glycol ester type, fatty acid ester type, epoxy type, phosphoric acid ester type, or tree (2-ethylhexyl type) ) Trimellitate (TOT), Butylphthalyl-butyl glycolate (B
PBG), and also chlorinated paraffin and the like.
本発明においては、これらの３成分の配合順序が重要で
あり、すなわち、カーボンブラックと粉末状の熱可塑性
樹脂とを“ヘンシェルミキサー”等で混合して混合物と
した後、次いで液状の可塑剤を添加して目的の組成物を
得る。In the present invention, the order of mixing these three components is important, that is, carbon black and powdered thermoplastic resin are mixed by a “Henschel mixer” or the like to form a mixture, and then a liquid plasticizer is added. Add to obtain the desired composition.
この順序が異なる場合には、カーボンブラックの泥状塊
が生成したり混合状態が悪くなったりして、得られる成
型品でのカーボンブラックの分散性が極めて悪くなるの
で好ましくない。また、本発明では、後段で添加する液
状の可塑剤の量も重要であり、下記の一般式（１）を満
足する様に樹脂100重量部当り添加するのがよい。If the order is different, a muddy mass of carbon black is generated or the mixed state is deteriorated, and the dispersibility of carbon black in the obtained molded product is extremely deteriorated, which is not preferable. Further, in the present invention, the amount of the liquid plasticizer added in the latter stage is also important, and it is preferable to add it per 100 parts by weight of the resin so as to satisfy the following general formula (1).
但し0.2≦Ｘ≦１ ここで、可塑剤の添加量が上記の範囲より少ない場合に
はカーボンブラックの飛散が生じ易く、逆に範囲より多
い場合には全体として泥状となり成型押出機への装入が
極めて困難となるので好ましくない。 However, 0.2 ≦ X ≦ 1 Here, if the amount of the plasticizer added is less than the above range, the carbon black is likely to be scattered, and if it is more than the range, it becomes muddy as a whole and charging into the molding extruder becomes extremely difficult. It is not preferable.
配合の方法としては、まず所定量のカーボンブラックと
粉状の熱可塑性樹脂とをヘンシェルミキサー等の混合機
により通常50〜2000rpm好ましくは100〜1000rpmで通常
２〜10分間程度撹拌・混合して均一な混合物を得、次い
でこの混合物に液状の可塑剤を徐々に添加することによ
り行なわれる。As a method of blending, first, a predetermined amount of carbon black and a powdery thermoplastic resin are stirred and mixed with a mixer such as a Henschel mixer at usually 50 to 2000 rpm, preferably 100 to 1000 rpm for about 2 to 10 minutes to homogenize. This is done by gradually adding a liquid plasticizer to this mixture.
以上の様にして、本発明の樹脂組成物が製造されるが、
その際必要に応じて、安定剤、抗酸化剤、紫外線吸収剤
等を添加してもよく、更には物性の異なるカーボンブラ
ックを混合使用してもよい。As described above, the resin composition of the present invention is produced,
At that time, if necessary, stabilizers, antioxidants, ultraviolet absorbers and the like may be added, and carbon blacks having different physical properties may be mixed and used.
（実施例） 以下、実施例に基づいて本発明をより詳細に説明する
が、本発明の要旨を越えない限り、下記の実施例に限定
されるものではない。(Examples) Hereinafter, the present invention will be described in more detail based on examples, but the present invention is not limited to the following examples as long as the gist of the present invention is not exceeded.
実施例１〜４ 表−２、表−３に示すカーボンブラックを表−１に示す
様な配合割合でPVCとあらかじめ“ヘンシェルミキサ
ー”で５分間1000rpmで撹拌混合する。その後、撹拌を
続けながら可塑剤としてDOPを表−１に示す配合割合で
５分間かけて滴下する。Examples 1 to 4 Carbon blacks shown in Tables 2 and 3 were mixed with PVC in advance in a "Henschel mixer" at a mixing ratio shown in Table 1 for 5 minutes at 1000 rpm. Then, DOP as a plasticizer is added dropwise at a blending ratio shown in Table 1 over 5 minutes while continuing stirring.
得られた組成物は0.5〜1mm径の球状でカー黒の飛散、付
着性が少なく、かつ流動性の良いものであった。The composition obtained had a spherical shape with a diameter of 0.5 to 1 mm and had little scattering of car black and little adhesion, and had good fluidity.
この組成物を140℃〜150℃に加熱した二本ロールで2mm
厚にシート化してJIS法に従い表面抵抗及び硬度を測定
したところ表−１の様に104〜105Ω／口の導電性と84〜
90程度の硬度となった。This composition is heated to 140 ℃ ~ 150 ℃ 2 rolls with 2 mm
When it was made into a thick sheet and the surface resistance and hardness were measured according to the JIS method, it was 10 4 to 10 5 Ω / neck conductivity and 84 to 10
The hardness was about 90.
分散性は次の様に調べた。The dispersibility was examined as follows.
まず、導電性測定用に作成した上記のシートを0.5〜0.8
μｍ厚の薄片に切断する。これをスライドガラスにの
せ、光学顕微鏡400倍で観察するとともに写真をとり、
下記の区分をもって評価する。First, 0.5 ~ 0.8 of the above-mentioned sheet made for conductivity measurement
Cut into μm thick slices. Place this on a slide glass, observe with an optical microscope 400 times and take a picture,
Evaluate according to the following categories.
◎ 凝集塊は全て１μｍ以下であるもの ○ 凝集塊は殆んど１μｍ以下であるが、70mm×90mmの
視野に存在する１μｍ以上の凝集塊の直径に個数を乗じ
た粗大塊長が70μｍ以下のもの △ 上記延べ凝集塊長が70μｍを超えるが、10μｍ以上
の凝集塊がないもの × 10μｍ以上の凝集塊が存在し上記延べ凝集塊長が70
μｍを超えるもの 実施例１〜３では極めて分散性が良く分散の進行しにく
い高比表面積品においても良好な分散状態が得られた。◎ Agglomerates are all 1 μm or less ○ Agglomerates are almost 1 μm or less, but coarse agglomerate length obtained by multiplying the number of agglomerates of 1 μm or more present in a visual field of 70 mm × 90 mm by 70 μm or less The above total aggregate length exceeds 70 μm, but there is no aggregate of 10 μm or more × The aggregate aggregate length of 10 μm or more exists and the total aggregate length is 70
In excess of μm, in Examples 1 to 3, a good dispersion state was obtained even in a product having a high specific surface area, which had extremely good dispersibility and in which dispersion was difficult to proceed.
又、ロールシート化時の飛散性も極めて少なく、ハンド
リング性は良好であった。なおロールシート化時の飛散
性は次式で表わす飛散率Ｆを以って定量化し、表−１に
示した。Further, the scattering property when formed into a roll sheet was extremely small, and the handling property was good. Note that the scattering property when rolled into a roll sheet is quantified by the scattering rate F represented by the following formula, and is shown in Table-1.
W0:ロールシート化前の重量 W1:ロールシート化後のシート重量 次に比較例について説明する。 W 0 : Weight before roll sheet formation W 1 : Sheet weight after roll sheet formation Next, a comparative example will be described.
比較例５では、カーボンブラックとPVC及び可塑剤の添
加順序を変更して作成した。In Comparative Example 5, the order of addition of carbon black, PVC, and the plasticizer was changed to prepare.
カーボンブラックとDOPを先に混合したところ泥状とな
って、次工程でPVCと充分な混合が行なえず結果として
ロールシートの分散性が極めて悪くなった。When carbon black and DOP were mixed first, they became muddy and could not be sufficiently mixed with PVC in the next step, resulting in extremely poor dispersibility of the roll sheet.
比較例６ではDOPの配合割合を式（１）の範囲より多く
して作成した。In Comparative Example 6, the DOP content was made larger than the range of the formula (1).
この生成物は、流動性が極めて悪く“ヘンシェルミキサ
ー”からの取出しが困難で、かつ、ロールシート化時に
充分なシェアがかけられずやはり分散性が充分でなかっ
た。This product had extremely poor fluidity, was difficult to take out from the "Henschel mixer", and did not have sufficient share during roll sheet formation, and its dispersibility was also insufficient.
比較例７ではDOPの配合割合を式（１）より少ない範囲
に設定したが粉立ちの多い混合物が得られた。飛散性を
式（２）に従って調べると3wt％以上となり実施例１〜
４と比べると飛散が格段に多いことが判る。In Comparative Example 7, the blending ratio of DOP was set to a range smaller than that of the formula (1), but a mixture with much dusting was obtained. When the scattering property is examined according to the formula (2), it becomes 3 wt% or more, and the results of Examples 1 to
It can be seen that the number of splashes is much higher than that of 4.
（発明の効果） この様にして得られた顆粒状樹脂組成物は流動性や押出
機へのかみこみ性が良いのでこのまま押出成型機に通す
ことができ、かつ分散性の良い成型品を得ることができ
る。 (Effect of the invention) Since the granular resin composition thus obtained has good fluidity and biteability into an extruder, it can be passed through an extruder as it is, and a molded product with good dispersibility can be obtained. You can
又、カーボンブラック粉の飛散が無いため黒色以外の押
出成型工程が隣接していてもこれらの作業場を汚染する
ことなく操業でき、かつ安定した配合組成の成型品を得
ることができる。Further, since there is no scattering of carbon black powder, even if extrusion molding processes other than black are adjacent, it is possible to operate without contaminating these workplaces, and it is possible to obtain a molded product having a stable compounding composition.
Claims (1)
配合して得られた混合物に熱可塑性樹脂のガラス転移温
度以下で液状の可塑剤を添加混合して顆粒状の導電性樹
脂組成物を製造する際に、粉状熱可塑性樹脂100重量部
に対する液状の可塑剤の配合部数Ａが下記関係式（１）
を満足するような量であることを特徴とする顆粒状導電
性樹脂組成物の製造方法。 但し0.2≦Ｘ≦１ ρK;液状の可塑剤密度（g/cc） ρDBP;フタル酸ジブチル（DBP）密度（g/cc） CB;カーボンブラック配合部数（樹脂100phrに対して） DBP;カーボンブラックのDBP吸収量（ml/100g）1. A granular conductive resin composition is prepared by adding a liquid plasticizer at a temperature not higher than the glass transition temperature of the thermoplastic resin to a mixture obtained by blending carbon black and a powdery thermoplastic resin. In the production, the mixing part number A of the liquid plasticizer to 100 parts by weight of the powdery thermoplastic resin is represented by the following relational expression (1).
The method for producing a granular conductive resin composition, wherein the amount is such that However, 0.2 ≦ X ≦ 1 ρ K ; Liquid plasticizer density (g / cc) ρ DBP ; Dibutyl phthalate (DBP) density (g / cc) CB; Carbon black compounding part (per 100 phr of resin) DBP; Carbon Black DBP absorption (ml / 100g)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62285047A JPH0751644B2 (en) | 1987-11-11 | 1987-11-11 | Method for producing granular conductive resin composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62285047A JPH0751644B2 (en) | 1987-11-11 | 1987-11-11 | Method for producing granular conductive resin composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01126372A JPH01126372A (en) | 1989-05-18 |
| JPH0751644B2 true JPH0751644B2 (en) | 1995-06-05 |
Family
ID=17686478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62285047A Expired - Fee Related JPH0751644B2 (en) | 1987-11-11 | 1987-11-11 | Method for producing granular conductive resin composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0751644B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3414580B2 (en) * | 1996-03-27 | 2003-06-09 | 富士通株式会社 | Conductive plastic composition and molded article |
-
1987
- 1987-11-11 JP JP62285047A patent/JPH0751644B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01126372A (en) | 1989-05-18 |
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