JP3261274B2 - Thermoplastic resin composition - Google Patents
Thermoplastic resin compositionInfo
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- JP3261274B2 JP3261274B2 JP33102894A JP33102894A JP3261274B2 JP 3261274 B2 JP3261274 B2 JP 3261274B2 JP 33102894 A JP33102894 A JP 33102894A JP 33102894 A JP33102894 A JP 33102894A JP 3261274 B2 JP3261274 B2 JP 3261274B2
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Description
【０００１】[0001]
【産業上の利用分野】本発明は、機械的強度に優れ、成
形性及び成形品表面外観が良好であり、成形品表面の黒
色度が優れた高比重熱可塑性樹脂組成物に関するもので
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high specific gravity thermoplastic resin composition having excellent mechanical strength, good moldability and good surface appearance of a molded article, and excellent blackness of the molded article surface.
【０００２】[0002]
【従来の技術】６ナイロンを初めとする熱可塑性樹脂
は、金属材料に比べて加工が容易で耐蝕性に優れ、かつ
軽量である上に比較的安価なことから、近年機械部品、
精密部品、一般工業部品、日用雑貨などの素材や、構造
材料など多くの分野において幅広く用いられている。2. Description of the Related Art Thermoplastic resins such as nylon 6 are easy to process, have excellent corrosion resistance, are lightweight, and are relatively inexpensive as compared with metal materials.
It is widely used in many fields such as materials such as precision parts, general industrial parts, daily necessities and structural materials.
【０００３】更に金属材料に比べ、製品の生産性に優れ
ており、特に射出成形法を採用した場合に顕著であり、
複雑形状の成形品が一工程で成形できることが高成長を
遂げた理由の一つである。[0003] Furthermore, compared to metal materials, it is superior in product productivity, especially when the injection molding method is adopted.
One of the reasons for achieving high growth is that a molded article having a complicated shape can be molded in one step.
【０００４】しかしながら、用途によっては金属並みの
重量感を必要とする場合があり、通常の熱可塑性樹脂で
は対応できなかった。[0004] However, depending on the application, there may be a case where a feeling of weight as high as that of a metal is required, and a normal thermoplastic resin cannot cope with the problem.
【０００５】そこで近年、熱可塑性樹脂に金属粉を溶融
混練等で混合した材料が開発された（特開昭６１−２０
０１６５号公報）。[0005] In recent years, a material has been developed in which a metal powder is mixed with a thermoplastic resin by melt kneading or the like (Japanese Patent Laid-Open No. 61-20 / 1986).
0165).
【０００６】この材料の場合、熱可塑性樹脂使用時の生
産性を維持し、かつ重量感もあるが、形成品の表面色は
灰色を呈する。[0006] In the case of this material, the productivity during the use of the thermoplastic resin is maintained, and there is a sense of weight, but the surface color of the formed product is gray.
【０００７】一方、金属材料のうち最も幅広く使われて
いる鉄は、自然に黒錆に覆われ独特の黒色を呈するた
め、金属粉を複合した熱可塑性樹脂は鉄代替としては色
調面で不満足である。On the other hand, iron, which is most widely used among metal materials, is naturally covered with black rust and has a unique black color. Therefore, a thermoplastic resin combined with metal powder is not satisfactory in color tone as a substitute for iron. is there.
【０００８】このため、塗装を施すことが行われるが、
工程増加の問題がある。For this reason, painting is performed,
There is a problem of additional processes.
【０００９】[0009]
【発明が解決しようとする課題】本発明の目的とすると
ころは、上記従来技術の問題点を解決し、機械的強度に
優れ、成形性及び成形品表面外観が良好であり、成形品
表面の黒色度に優れた重量感のある熱可塑性樹脂組成物
を提供するにある。SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the prior art, to have excellent mechanical strength, good moldability and good surface appearance of molded products, An object of the present invention is to provide a heavy-weight thermoplastic resin composition having excellent blackness.
【００１０】[0010]
【課題を解決するための手段】上述の目的は、（Ａ）相
対粘度 ２．１〜３．０の６ナイロン，（Ｂ）平均粒子
径 ３〜２５μｍのステンレス粉末４０〜７０重量％，
（Ｃ）ガラス繊維５〜１５重量％，（Ｄ）カーボンブラ
ック ０．３〜２．０重量％，からなる組成物１００重
量部に対して、（Ｅ）下記一般式（Ｉ）で示される飽和
脂肪族カルボン酸化合物０．０１〜０．５重量部を配合
してなることを特徴とする熱可塑性樹脂組成物によって
達成される。 〔ＣＨ3 （ＣＨ2 ）m ＣＯＯ〕n Ｒ・・・・・（Ｉ） （式中ｍは１４〜２６の整数、ｎは１または２、Ｒはア
ルカリ金属、アルカリ土類金属、水素あるいは脂肪族炭
化水素基を表す。）The object of the present invention is to (A) 6 nylon having a relative viscosity of 2.1 to 3.0, (B) stainless steel powder having an average particle diameter of 3 to 25 μm, 40 to 70% by weight,
With respect to 100 parts by weight of a composition composed of (C) 5 to 15% by weight of glass fiber and (D) 0.3 to 2.0% by weight of carbon black, (E) saturation represented by the following general formula (I) This is achieved by a thermoplastic resin composition characterized by comprising 0.01 to 0.5 parts by weight of an aliphatic carboxylic acid compound. [CH 3 (CH 2 ) m COO] n R ··· (I) (wherein m is an integer of 14 to 26, n is 1 or 2, R is an alkali metal, alkaline earth metal, hydrogen or fat) Represents a group hydrocarbon group.)
【００１１】以下、本発明を詳細に説明する。本発明に
用いる６ナイロンは、ε−カプロラクタムを重合させる
ことにより得られる線状ポリマーを意味するが、６ナイ
ロンの基本的性質を損なわない範囲において、ε−カプ
ロラクタム以外のモノマーが共重合ないしブレンドされ
ていても構わない。Hereinafter, the present invention will be described in detail. The 6 nylon used in the present invention means a linear polymer obtained by polymerizing ε-caprolactam. It does not matter.
【００１２】本発明に用いる（Ａ）６ナイロンは、ＪＩ
Ｓ Ｋ ６８１０法で測定した相対粘度が２．１〜３．
０であることが肝要である。The (A) 6 nylon used in the present invention is JI
The relative viscosity measured by the SK 6810 method is 2.1 to 3.
It is important that it is 0.
【００１３】相対粘度が２．１未満の場合、機械強度が
不良となり、相対粘度が３．０を超える場合、成形性が
不良となる。[0013] When the relative viscosity is less than 2.1, the mechanical strength becomes poor, and when the relative viscosity exceeds 3.0, the moldability becomes poor.
【００１４】本発明に用いる（Ｂ）ステンレス粉末の平
均粒子径は３〜２５μｍであることが肝要である。好ま
しくは３〜２０μｍである。It is important that the stainless steel powder (B) used in the present invention has an average particle size of 3 to 25 μm. Preferably it is 3 to 20 μm.
【００１５】平均粒子径が３μｍ未満の場合、成形品の
黒色度は不充分であり、２５μｍを超える場合、成形性
が不良となる。When the average particle diameter is less than 3 μm, the blackness of the molded product is insufficient, and when it exceeds 25 μm, the moldability becomes poor.
【００１６】本発明に用いるステンレス粉末の配合量
は、４０〜７０重量％であることが肝要である。It is important that the amount of the stainless steel powder used in the present invention is 40 to 70% by weight.
【００１７】ステンレス粉末の配合量が４０重量％未満
の場合、重量感に乏しく、７０重量％を超える場合、成
形加工性及び成形品表面外観が不良となる。If the amount of the stainless steel powder is less than 40% by weight, the feeling of weight is poor, and if it exceeds 70% by weight, the moldability and the surface appearance of the molded article become poor.
【００１８】本発明に用いる（Ｃ）ガラス繊維は、熱可
塑性樹脂の強化用に使用されるものでよく、通常Ｅガラ
スやＡガラスを材質とする。繊維径は通常５〜１５μ
ｍ、長さは３〜６ｍｍが好ましい。The glass fiber (C) used in the present invention may be used for reinforcing a thermoplastic resin, and is usually made of E glass or A glass. Fiber diameter is usually 5-15μ
m and the length are preferably 3 to 6 mm.
【００１９】本発明に用いるガラス繊維の配合量は、５
〜１５重量％であることが肝要である。５重量％未満の
場合、機械的強度が不良であり、１５重量％を超える場
合は、成形品外観が不良になる。The amount of the glass fiber used in the present invention is 5
It is important that the content is １５15% by weight. If it is less than 5% by weight, the mechanical strength is poor, and if it exceeds 15% by weight, the appearance of the molded product is poor.
【００２０】本発明に用いる（Ｄ）カーボンブラック
は、通常樹脂の着色に用いられているものでよく、オイ
ルファーネスブラックやチャンネルブラック等が挙げら
れる。The carbon black (D) used in the present invention may be one usually used for coloring resins, and examples thereof include oil furnace black and channel black.
【００２１】本発明に用いるカーボンブラックの配合量
は、０．３〜２．０重量％であることが肝要である。It is important that the amount of carbon black used in the present invention is 0.3 to 2.0% by weight.
【００２２】カーボンブラックの配合量が０．３重量％
未満の場合、成形品の黒色度が不充分であり、２．０重
量％を超える場合は、機械的強度が不良となる。When the blending amount of carbon black is 0.3% by weight
If it is less than the above, the blackness of the molded product is insufficient, and if it exceeds 2.0% by weight, the mechanical strength becomes poor.
【００２３】カーボンブラックは、（Ａ）６ナイロンの
一部と共にマスターチップ化して、（Ａ），（Ｂ），及
び（Ｃ）に混合する。The carbon black is made into a master chip together with a part of (A) 6 nylon, and mixed into (A), (B) and (C).
【００２４】本発明では、上記一般式（Ｉ）で示される
（Ｅ）飽和脂肪族カルボン酸化合物を配合することが肝
要である。飽和脂肪族カルボン酸化合物は、式中のｍが
１４〜２６の飽和脂肪族カルボン酸、またはその金属塩
あるいはそのエステルである。ｍ＝１４の場合のパルミ
チン酸化合物、ｍ＝１６の場合のステアリン酸化合物、
ｍ＝２６の場合のモンタン酸化合物等が挙げられる。In the present invention, it is important to incorporate (E) a saturated aliphatic carboxylic acid compound represented by the above general formula (I). The saturated aliphatic carboxylic acid compound is a saturated aliphatic carboxylic acid having m in the formula of 14 to 26, or a metal salt or ester thereof. a palmitic acid compound when m = 14, a stearic acid compound when m = 16,
and montanic acid compounds in the case of m = 26.
【００２５】金属塩としては、リチウム、ナトリウム、
カリウム等のアルカリ金属、マグネシウム、カルシウム
等のアルカリ土類金属から成るものが挙げられる。As the metal salt, lithium, sodium,
Examples include those composed of alkali metals such as potassium and alkaline earth metals such as magnesium and calcium.
【００２６】エステルとしては、エチレングリコール、
１，２−または１，３−プロパンジオール、１，３−ま
たは１，４−ブタンジオール等のアルコールでエステル
化したもの等が挙げられる。As the ester, ethylene glycol,
Examples thereof include those esterified with an alcohol such as 1,2- or 1,3-propanediol, 1,3- or 1,4-butanediol.
【００２７】また、飽和脂肪族カルボン酸化合物は１種
でも、２種以上組み合わされたものでもよい。The saturated aliphatic carboxylic acid compound may be one kind or a combination of two or more kinds.
【００２８】かかる飽和脂肪族カルボン酸化合物として
は、ステアリン酸カルシウム、ステアリン酸マグネシウ
ム、モンタン酸ナトリウム、エチレングリコールでエス
テル化したモンタン酸エステル等が挙げられる。Examples of such a saturated aliphatic carboxylic acid compound include calcium stearate, magnesium stearate, sodium montanate, and montanic acid ester esterified with ethylene glycol.
【００２９】本発明に用いる飽和脂肪族カルボン酸化合
物の配合量は、６ナイロン、ステンレス粉末、ガラス繊
維及びカーボンブラックより成る組成物１００重量部に
対して、０．０１〜０．５重量部であることが肝要であ
る。The amount of the saturated aliphatic carboxylic acid compound used in the present invention is 0.01 to 0.5 part by weight based on 100 parts by weight of a composition comprising 6 nylon, stainless steel powder , glass fiber and carbon black. It is important that there be.
【００３０】飽和脂肪族カルボン酸化合物の配合量が、
０．０１重量部未満の場合、成形加工性不良となり、
０．５重量部を超える場合は、成形品外観が不良にな
る。When the content of the saturated aliphatic carboxylic acid compound is
If the amount is less than 0.01 parts by weight, molding processability becomes poor,
When the amount exceeds 0.5 parts by weight, the appearance of the molded product becomes poor.
【００３１】飽和脂肪族カルボン酸化合物は、（Ａ），
（Ｂ），（Ｃ），及び（Ｄ）の成分と共に混合して用い
ることができる。The saturated aliphatic carboxylic acid compounds include (A),
It can be used by mixing with the components (B), (C) and (D).
【００３２】本発明の熱可塑性樹脂組成物には、本発明
の目的を損なわない範囲で必要に応じて通常の添加剤、
例えば、酸化防止剤及び熱安定剤（例えばヒンダードフ
ェノール，ヒドロキノン，チオエーテル，ホスファイト
類及びこれらの置換体及びその組合せを含む）、紫外線
吸収剤（例えば種々のレゾルシノール，サリシレート，
ベンゾトリアゾール，ベンゾフェノン等）、帯電防止剤
（例えばベンゼンスルホン酸ナトリウム，ポリアルキル
グリコール等）、結晶化促進剤（例えばポリエチレング
リコール等）、カップリング剤（例えばシラン系、チタ
ネート系、アルミニウム系等）、添加剤添着液（シリコ
ン系オイル等）を１種以上添加することができる。The thermoplastic resin composition of the present invention may contain, if necessary, ordinary additives as long as the object of the present invention is not impaired.
For example, antioxidants and heat stabilizers (eg, including hindered phenols, hydroquinones, thioethers, phosphites and their substitutions and combinations thereof), UV absorbers (eg, various resorcinols, salicylates,
Benzotriazole, benzophenone, etc.), antistatic agent (eg, sodium benzenesulfonate, polyalkyl glycol, etc.), crystallization accelerator (eg, polyethylene glycol, etc.), coupling agent (eg, silane type, titanate type, aluminum type, etc.), One or more kinds of additive impregnating liquids (such as silicon-based oils) can be added.
【００３３】本発明の熱可塑性樹脂組成物の製造方法
は、特に限定されるものではなく、公知の種々の方法を
とりうる。例えば、単軸或は、２軸混練機で溶融混練す
る方法が挙げられる。The method for producing the thermoplastic resin composition of the present invention is not particularly limited, and various known methods can be employed. For example, there is a method of melting and kneading with a single-screw or twin-screw kneader.
【００３４】特にカーボンブラックは、粉末をそのまま
添加してもよいが一般には予めマスター化した物が用い
られる。In particular, carbon black may be added in the form of a powder as it is, but is generally used in advance as a master.
【００３５】[0035]
【発明の効果】本発明の熱可塑性樹脂組成物は、機械的
強度に優れ、成形性及び成形品表面外観が良好であり、
更に成形品表面の黒色度が優れており、重量感があるた
め機械部品等に好適である。The thermoplastic resin composition of the present invention has excellent mechanical strength, good moldability and good surface appearance of a molded product.
Further, the molded article surface is excellent in blackness and has a heavy feeling, so that it is suitable for machine parts and the like.
【００３６】[0036]
【実施例】以下実施例によって本発明を具体的に発明す
る。尚、物性評価は以下の方法に従って行った。EXAMPLES The present invention will be specifically described with reference to the following examples. In addition, physical property evaluation was performed according to the following method.
【００３７】相対粘度：ＪＩＳ Ｋ ６８１０ 引張強度：ＡＳＴＭ Ｄ ６３８ 成形品外観：目視による評価を行い、曇りの全くないも
のを◎、ほとんどないものを○、著しいものを×とし
た。 成形品黒色度：目視による評価を行い、黒色を◎、ほぼ
黒色を○、灰色を×とした。Relative viscosity: JIS K 6810 Tensile strength: ASTM D 638 Appearance of molded article: Visual evaluation was performed. Blackness of molded product: Visual evaluation was performed, and black was evaluated as ◎, almost black as ○, and gray as x.
【００３８】６ナイロンの製造例 ε−カプロラクタム１００重量部、水１重量部を反応容
器に仕込み、密封して２６０℃まで加熱した。２〜３時
間そのままの圧力で反応させた後、５００Ｔｏｒｒの減
圧下で重合を進行させ、所定の粘度で重合を止め、押出
してペレット化し、更に熱水によりモノマーオリゴマー
を０．１％以下迄抽出し、６ナイロンを得た。6 Production Example of Nylon 100 parts by weight of ε-caprolactam and 1 part by weight of water were charged into a reaction vessel, sealed and heated to 260 ° C. After reacting at the same pressure for 2 to 3 hours, the polymerization is allowed to proceed under a reduced pressure of 500 Torr, the polymerization is stopped at a predetermined viscosity, extruded into pellets, and the monomer oligomer is extracted to 0.1% or less with hot water. Then, 6 nylon was obtained.
【００３９】実施例１〜５，比較例１〜１２ 上記方法で得られた種々の粘度の６−ナイロン（表１に
記載）、ＳＵＳ粉末（粒径５０μｍは大同特殊鋼株式会
社製、その他は大平洋金属株式会社製）、ガラス繊維
（Ｔ−２８９，日本電気硝子株式会社製）、飽和脂肪族
カルボン酸化合物，及び予め相対粘度２．３の６ナイロ
ンにカーボンブラック（チャンネルブラック）を２０重
量％配合して練り込んで作ったカーボンブラックマスタ
ーを表１に示す組成で配合し、３０ｍｍスクリュウ径の
異方向回転２軸押出機で溶融混合してペレットを得た。Examples 1 to 5 and Comparative Examples 1 to 12 6-nylon of various viscosities obtained by the above method (described in Table 1), SUS powder (50 μm in particle diameter is manufactured by Daido Steel Co., Ltd. Taiheiyo Metal Co., Ltd.), glass fiber (T-289, manufactured by Nippon Electric Glass Co., Ltd.), saturated aliphatic carboxylic acid compound, and carbon black (channel black) 20 weight in 6 nylon having a relative viscosity of 2.3 in advance. % Carbon black master was prepared and kneaded with the composition shown in Table 1 and melt-mixed with a 30 mm screw diameter different direction rotating twin screw extruder to obtain pellets.
【００４０】得られたペレットを減圧下で加熱（１２０
℃）乾燥し、成形工程に共し、成形品を得て評価した。
結果を表２に示した。The obtained pellets were heated under reduced pressure (120
℃) After drying, a molded article was obtained and evaluated during the molding step.
The results are shown in Table 2.
【００４１】[0041]
【表１】 [Table 1]
【００４２】[0042]
【表２】 [Table 2]
フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) C08L 77/02 Continuation of front page (58) Field surveyed (Int. Cl. 7 , DB name) C08L 77/02
Claims (1)
ナイロン，（Ｂ）平均粒子径 ３〜２５μｍのステンレ
ス粉末４０〜７０重量％，（Ｃ）ガラス繊維５〜１５重
量％，（Ｄ）カーボンブラック ０．３〜２．０重量
％，からなる組成物１００重量部に対して、（Ｅ）下記
一般式（Ｉ）で示される飽和脂肪族カルボン酸化合物
０．０１〜０．５重量部を配合してなることを特徴とす
る熱可塑性樹脂組成物。 〔ＣＨ3 （ＣＨ2 ）m ＣＯＯ〕n Ｒ・・・・・（Ｉ） （式中ｍは１４〜２６の整数、ｎは１または２、Ｒはア
ルカリ金属、アルカリ土類金属、水素あるいは脂肪族炭
化水素基を表す。）(A) Relative viscosity 2.1 to 3.0-6
A composition comprising nylon, (B) 40 to 70% by weight of stainless powder having an average particle diameter of 3 to 25 μm, (C) 5 to 15% by weight of glass fiber, and (D) 0.3 to 2.0% by weight of carbon black. A thermoplastic resin composition comprising (E) 0.01 to 0.5 parts by weight of a saturated aliphatic carboxylic acid compound represented by the following general formula (I) per 100 parts by weight. [CH 3 (CH 2 ) m COO] n R ··· (I) (wherein m is an integer of 14 to 26, n is 1 or 2, R is an alkali metal, alkaline earth metal, hydrogen or fat) Represents a group hydrocarbon group.)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33102894A JP3261274B2 (en) | 1994-12-07 | 1994-12-07 | Thermoplastic resin composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33102894A JP3261274B2 (en) | 1994-12-07 | 1994-12-07 | Thermoplastic resin composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08157715A JPH08157715A (en) | 1996-06-18 |
| JP3261274B2 true JP3261274B2 (en) | 2002-02-25 |
Family
ID=18239021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33102894A Expired - Lifetime JP3261274B2 (en) | 1994-12-07 | 1994-12-07 | Thermoplastic resin composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3261274B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202004018390U1 (en) * | 2004-11-27 | 2005-02-17 | Degussa Ag | Thermoplastic plastic powder formulation for coatings with a metallic, especially stainless steel-like color impression |
-
1994
- 1994-12-07 JP JP33102894A patent/JP3261274B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08157715A (en) | 1996-06-18 |
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