JP3406816B2 - Thermoplastic resin composition - Google Patents
Thermoplastic resin compositionInfo
- Publication number
- JP3406816B2 JP3406816B2 JP31823097A JP31823097A JP3406816B2 JP 3406816 B2 JP3406816 B2 JP 3406816B2 JP 31823097 A JP31823097 A JP 31823097A JP 31823097 A JP31823097 A JP 31823097A JP 3406816 B2 JP3406816 B2 JP 3406816B2
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- JP
- Japan
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- parts
- resin composition
- weight
- thermoplastic resin
- magnesium oxide
- Prior art date
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- Compositions Of Macromolecular Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、機械物性、熱伝導
性及び電気絶縁性に優れた熱可塑性樹脂組成物に関す
る。TECHNICAL FIELD The present invention relates to a thermoplastic resin composition having excellent mechanical properties, thermal conductivity and electrical insulation.
【０００２】[0002]
【従来の技術】近年、電気・電子部品のハウジング等に
は軽量性、電気絶縁性面で金属材料から樹脂材料への急
激な転換が進みつつある。しかし、金属材料性のハウジ
ングではモーター等から発生する熱も自然に放熱される
が、樹脂の場合には放熱が十分に迅速に行われず、その
ため、内蔵されている他の部品が軟化したり、劣化が促
進される等の問題が生じている。2. Description of the Related Art In recent years, housings for electric and electronic parts are undergoing a rapid shift from metal materials to resin materials in terms of light weight and electric insulation. However, the heat generated from the motor etc. is naturally dissipated in the metallic material housing, but in the case of resin, the heat is not dissipated quickly enough, so that other built-in parts soften, There are problems such as accelerated deterioration.
【０００３】一般にポリアミド樹脂は、電気絶縁性に優
れているため、電気・電子部品等のハウジングへの利用
が試みられているが、放熱性に乏しく、改善が望まれて
いる。In general, polyamide resins are excellent in electrical insulation properties, so that attempts have been made to use them for housings of electric / electronic parts, etc. However, they are poor in heat dissipation properties, and improvements are desired.
【０００４】従来、ポリアミド樹脂の放熱性を向上させ
る方法としては、例えば、特開昭５８−１７４４４０号
公報にあるように、金属フィラーを複合する方法があ
る。しかしながら、多量に複合した場合、樹脂の本来の
特性である電気絶縁性及び軽量性が失われ、一方、少量
の場合には、放熱性は不十分である。Conventionally, as a method for improving the heat dissipation of the polyamide resin, for example, there is a method of compounding a metal filler as disclosed in JP-A-58-174440. However, when compounded in a large amount, the original properties of the resin, ie, electrical insulation and lightness, are lost, while in the case of a small amount, the heat dissipation is insufficient.
【０００５】また、酸化マグネシウムを複合して放熱性
を向上させる方法があるが、従来の酸化マグネシウムは
活性が高く、酸化マグネシウムを複合した熱可塑性樹脂
組成物の成形品を高温・多湿下に放置した場合、酸化マ
グネシウムが徐々に水和され、熱可塑性樹脂組成物の放
熱性は低下する。There is also a method of improving heat dissipation by compounding magnesium oxide, but conventional magnesium oxide has a high activity, and a molded article of a thermoplastic resin composition compounding magnesium oxide is left under high temperature and high humidity. In that case, magnesium oxide is gradually hydrated, and the heat dissipation of the thermoplastic resin composition decreases.
【０００６】[0006]
【発明が解決しようとする課題】本発明者らはかかる従
来技術の有する問題点を解決すべく鋭意研究した結果、
本発明を完成したものであって、その目的とするところ
は、機械物性、熱伝導性及び電気絶縁性に優れた熱可塑
性樹脂組成物を提供しようとするものである。DISCLOSURE OF INVENTION Problems to be Solved by the Invention
The object of the present invention, which has been completed, is to provide a thermoplastic resin composition having excellent mechanical properties, thermal conductivity, and electrical insulation.
【０００７】[0007]
【課題を解決するための手段】上記目的は、ポリアミド
樹脂１００重量部に対し、ガラス繊維１０〜１７０重量
部、酸化マグネシウム２０〜２５０重量部含有してなる
熱可塑性樹脂組成物であって、該酸化マグネシウムの表
面積がＢＥＴ法で５ｍ2 ／ｇ以下であることを特徴とす
る熱可塑性樹脂組成物によって達成される。The above object is a thermoplastic resin composition containing 10 to 170 parts by weight of glass fiber and 20 to 250 parts by weight of magnesium oxide per 100 parts by weight of polyamide resin. It is achieved by a thermoplastic resin composition characterized in that the surface area of magnesium oxide is 5 m 2 / g or less by the BET method.
【０００８】[0008]
【発明の実施の形態】以下、本発明を詳細に説明する。
本発明に用いられるポリアミド樹脂としては、特に制限
はなく、高分子鎖中に−ＣＯＮＨ−基を有する物であれ
ば各種のポリアミド樹脂を使用することが出来る。代表
例としては、ナイロン６やナイロン１２等脂肪族ラクタ
ムの開環重合により得られる物、ナイロン６・６、ナイ
ロン６・１２、ＭＸＤ・ナイロン６等脂肪族ジアミンと
脂肪族ジカルボン酸との重縮合により得られる物、ナイ
ロン１１等アミノ酸の重縮合により得られる物、その他
各種ナイロンモノマーの重合により得られる共重合体等
があげられる。また、これらの混合物も含まれる。BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below.
The polyamide resin used in the present invention is not particularly limited, and various polyamide resins can be used as long as they have a -CONH- group in the polymer chain. Typical examples are those obtained by ring-opening polymerization of aliphatic lactams such as nylon 6 and nylon 12, polycondensation of aliphatic diamines with aliphatic dicarboxylic acids such as nylon 6.6, nylon 6.12, MXD and nylon 6. Examples thereof include those obtained by polycondensation of amino acids such as nylon 11 and copolymers obtained by polymerization of various nylon monomers. Also included are mixtures of these.
【０００９】本発明の樹脂組成物において用いるガラス
繊維は、通常のガラス繊維強化熱可塑性樹脂に使用され
る物であり、一般には直径５〜２０μｍ、長さ１〜２５
ｍｍの物が使用される。本発明に使用するガラス繊維の
表面は、例えば、アミノシラン、エポキシシラン、ボラ
ン、ビニルシラン、メタクリロシラン等で表面処理され
ていてもよく、更に、混練加工時のハンドリング性よ
り、ウレタン、ＰＥＴ、ＥＶＡ等の収束剤を併用しても
良い。The glass fibers used in the resin composition of the present invention are those used in ordinary glass fiber reinforced thermoplastic resins, and generally have a diameter of 5 to 20 μm and a length of 1 to 25.
mm items are used. The surface of the glass fiber used in the present invention may be surface-treated with, for example, aminosilane, epoxysilane, borane, vinylsilane, methacrylosilane, etc. Further, due to the handling property during kneading, urethane, PET, EVA may be used. You may use together a converging agent such as.
【００１０】ガラス繊維の配合量は、ポリアミド樹脂１
００重量部に対して１０〜１７０重量部であることが肝
要である。１０重量部未満の場合、補強効果は不十分で
あり、機械物性は不良である。一方、１７０重量部を超
える場合、成形性は低下する。The glass fiber content is polyamide resin 1
It is important that the amount is 10 to 170 parts by weight with respect to 00 parts by weight. If it is less than 10 parts by weight, the reinforcing effect is insufficient and the mechanical properties are poor. On the other hand, when it exceeds 170 parts by weight, the moldability is lowered.
【００１１】本発明の樹脂組成物において用いる酸化マ
グネシウムは、表面積がＢＥＴ法で５ｍ2 ／ｇ以下であ
ることが肝要である。５ｍ2 ／ｇを超える場合、酸化マ
グネシウムの活性度は高く、高温・多湿下では徐々に水
和され、熱可塑性樹脂組成物の放熱性は低下する。It is important that the magnesium oxide used in the resin composition of the present invention has a surface area of 5 m 2 / g or less as measured by the BET method. When it exceeds 5 m 2 / g, the activity of magnesium oxide is high, and it is gradually hydrated under high temperature and high humidity, and the heat dissipation of the thermoplastic resin composition is lowered.
【００１２】酸化マグネシウムの製造方法としては、通
常は水酸化マグネシウムを１２００℃未満の比較的低い
温度で焼成し、粉砕、分級する方法がとられているが
（軽焼マグネシア）、表面積は大きく活性度は高く、本
発明には不適である。As a method for producing magnesium oxide, generally, magnesium hydroxide is calcined at a relatively low temperature of less than 1200 ° C., pulverized and classified (light burned magnesia), but the surface area is large and active. The degree is high and unsuitable for the present invention.
【００１３】本発明に使用する酸化マグネシウムは、水
酸化マグネシウムを１２００℃以上の温度で焼成（硬
焼）し、粉砕、分級した物が好ましい。この製造方法で
は、表面積も小さくなり、活性度は低く、本発明には適
している。The magnesium oxide used in the present invention is preferably one obtained by firing (hard-baking) magnesium hydroxide at a temperature of 1200 ° C. or higher, pulverizing and classifying. This manufacturing method has a small surface area and low activity, and is suitable for the present invention.
【００１４】本発明に使用する酸化マグネシウムの粒子
径は、特に制限はないが、通常１００μｍ以下が用いら
れ、好ましくは５０μｍ以下である。The particle size of magnesium oxide used in the present invention is not particularly limited, but usually 100 μm or less is used, and preferably 50 μm or less.
【００１５】本発明に使用する酸化マグネシウムには樹
脂と複合する前に予めカップリング剤で表面処理されて
いることが樹脂組成物の機械強度の面で好ましい。カッ
プリング剤の種類としては、通常無機フィラーに使用さ
れる物があげられるが、シラン系が好ましい。具体的に
は、アミノシラン系、エポキシシラン系等があげられ
る。The magnesium oxide used in the present invention is preferably surface-treated in advance with a coupling agent before being combined with a resin, from the viewpoint of mechanical strength of the resin composition. Examples of the type of coupling agent include those usually used for inorganic fillers, but silane-based ones are preferable. Specific examples thereof include aminosilane type and epoxysilane type.
【００１６】酸化マグネシウムの配合量は、ポリアミド
樹脂１００重量部に対して２０〜２５０重量部であるこ
とが肝要である。２０重量部未満の場合、熱伝導性が低
く、放熱性の効果は小さい。一方、２５０重量部を超え
る場合、機械強度が不十分となる。It is important that the compounding amount of magnesium oxide is 20 to 250 parts by weight with respect to 100 parts by weight of the polyamide resin. When it is less than 20 parts by weight, the thermal conductivity is low and the effect of heat dissipation is small. On the other hand, when it exceeds 250 parts by weight, the mechanical strength becomes insufficient.
【００１７】本発明の組成物には、本発明の目的を損な
わない範囲で少量のフィラーを加えることが出来る。例
えば、耐熱性、機械物性を向上する目的でガラスフレー
ク、ガラスビーズ、マイカ、カオリン、炭素繊維等が挙
げられる。A small amount of filler can be added to the composition of the present invention within a range not impairing the object of the present invention. For example, glass flakes, glass beads, mica, kaolin, carbon fibers and the like can be mentioned for the purpose of improving heat resistance and mechanical properties.
【００１８】本発明の組成物には、本発明の目的を損な
わない範囲で通常の添加剤、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）、結晶核剤（例えばカオリン、タルク等）、滑剤
及び離型剤（例えばモンタン酸及びその塩、ステアリン
酸及びその塩、ステアリルアルコール、ステアリルアミ
ド、シリコン樹脂等）、染料（例えばニトロシン等）及
び顔料（例えばカーボンブラック、硫化カドミウム、フ
タロシアニン等）を含む着色剤、添加剤添着液（例えば
シリコンオイル等）等を１種以上添加することが出来
る。The composition of the present invention contains conventional additives such as antioxidants and heat stabilizers (eg hindered phenols, hydroquinones, thioethers, phosphites and their substitutions) within a range not impairing the object of the present invention. Body and its combinations), UV absorbers (eg resorcinol, salicylate, benzotriazole, benzophenone etc.), crystal nucleating agents (eg kaolin, talc etc.), lubricants and mold release agents (eg montanic acid and its salts, stearic acid). And salts thereof, stearyl alcohol, stearyl amide, silicone resin, etc.), dyes (eg nitrocin etc.) and colorants containing pigments (eg carbon black, cadmium sulfide, phthalocyanine etc.), additive impregnation liquids (eg silicone oil etc.) etc. One or more kinds can be added.
【００１９】更に、本発明の組成物には少量の他の熱可
塑性樹脂（例えばポリエチレン、ポリプロピレン、エチ
レン系共重合体などのオレフィン系樹脂、アクリル樹
脂、フッ素樹脂、ポリアセタール、ポリカーボネート、
ポリスルホン、ポリフェニレンオキサイド、ポリエステ
ル、ＡＢＳ樹脂、ＭＢＳ樹脂などのグラフト共重合体な
ど）を配合することが出来る。Further, the composition of the present invention contains a small amount of another thermoplastic resin (for example, olefin resin such as polyethylene, polypropylene, ethylene copolymer, acrylic resin, fluororesin, polyacetal, polycarbonate,
Graft copolymer such as polysulfone, polyphenylene oxide, polyester, ABS resin and MBS resin) can be blended.
【００２０】本発明の熱可塑性樹脂組成物は射出成形品
となるまで、すべての成分が十分に分散されていること
が好ましい。このための方法としては、例えば異方向回
転２軸押出機を用いてペレット状の樹脂を作り、射出成
形工程に供する方法がある。It is preferable that all components of the thermoplastic resin composition of the present invention are sufficiently dispersed until it becomes an injection molded product. As a method for this, for example, there is a method in which a pellet-shaped resin is produced by using a different-direction rotating twin-screw extruder, and the resin is subjected to an injection molding process.
【００２１】[0021]
【発明の効果】本発明は、機械物性、熱伝導性及び電気
絶縁性に優れた熱可塑性樹脂組成物に関する。The present invention relates to a thermoplastic resin composition having excellent mechanical properties, thermal conductivity and electrical insulation.
【００２２】[0022]
【実施例】以下、実施例によって本発明を具体的に説明
する。尚、物性評価は、以下の方法に従って行った。但
し、放熱性効果は、熱伝導率をもって表すこととする。EXAMPLES The present invention will be specifically described below with reference to examples. The physical properties were evaluated according to the following methods. However, the heat dissipation effect is expressed by thermal conductivity.
【００２３】酸化マグネシウムの表面積：ＢＥＴ法
引張強度：ＡＳＴＭ Ｄ６３８ 試験速度５ｍｍ／ｍｉ
ｎ
衝撃強度：ＡＳＴＭ Ｄ２５６ アイゾット、ノッチ付
き、１／４インチ
熱伝導率：ＡＳＴＭ Ｅ１５３０（ディスク板、熱流計
方式）
電気抵抗：１２７ｍｍ×１３ｍｍ×６ｍｍの試験片を用
い、１００ｍｍ間隔でＳＵＳ製タップを立て、両端の抵
抗をメガテスター（印可電圧５００Ｖ）で測定Surface area of magnesium oxide: BET tensile strength: ASTM D638 Test speed 5 mm / mi
n Impact strength: ASTM D256 Izod, notched, 1/4 inch Thermal conductivity: ASTM E1530 (disk plate, heat flow meter method) Electrical resistance: 127 mm x 13 mm x 6 mm test piece, using SUS taps at 100 mm intervals Stand up and measure the resistance at both ends with a mega tester (applied voltage 500V)
【００２４】実施例１〜５、比較例１〜４
ポリアミド樹脂（カネボウ合繊社製 ナイロン６ ＭＣ
１１２Ｌ）１００重量部に対し、ガラス繊維（日本電気
硝子社製 ＥＣＳ０３Ｔ−２４）及び酸化マグネシウム
（協和化学社製 パイロキスマ５３０１Ｋ 表面積１
（ｍ2／ｇ））を表１に示す組成で、スクリュー径３０
ｍｍの異方向２軸混練押出機（日本製鋼社製 ＴＥＸ−
３０）のメインフィーダーよりポリアミド樹脂を供給
し、サイドフィーダーよりガラス繊維と酸化マグネシウ
ムを供給して溶融混練し、ペレットを得た。Example 1~ 5, Comparative Examples 1 to 4
Polyamide resin (Kanebo synthetic fiber nylon 6 MC
112 L) 100 parts by weight of glass fiber (NEC)
Glass ECS03T-24) and magnesium oxide
(Kyowa Chemical Co., Ltd. Pyrokissma 5301K Surface area 1
(M2/ G))The composition shown in Table 1 has a screw diameter of 30.
mm bi-directional twin-screw kneading extruder (TEX-made by Nippon Steel Co., Ltd.
Supplying polyamide resin from the main feeder in 30)
And glass fiber and magnesium oxide from the side feeder
And the mixture was melted and kneaded to obtain pellets.
【００２５】得られたペレットを減圧乾燥後、射出成形
に供し試験片を得、物性試験に供した。その結果も表１
にあわせて示した。但し、比較例２と比較例４は成形で
きなかった。また、電気抵抗値は何れも１００ＭΩ以上
であった。The pellets thus obtained were dried under reduced pressure and then subjected to injection molding to obtain test pieces, which were then subjected to a physical property test. The results are also shown in Table 1.
It is also shown. However, Comparative Example 2 and Comparative Example 4 could not be molded. Further, the electric resistance values were all 100 MΩ or more.
【００２６】[0026]
【表１】 [Table 1]
【００２７】実施例６、比較例５、６
ポリアミド樹脂（旭化成社製 レオナ１３００）７０重
量部にガラス繊維（ＥＣＳ０３Ｔ−２８９）３０重量部
の組成で、実施例１と同方法でガラス繊維複合６６ナイ
ロン材料を作った。このガラス繊維複合材料１００重量
部に対し、表２に示す酸化マグネシウムを５０重量部配
合し、両材料をメインフィーダーより供給し、実施例１
で使用した混練押出機で溶融混練しペレットを得、高温
・多湿処理（８０℃、９０％、３０日）前後の熱伝導性
を評価した。その結果も表２に示した。Example 6, Comparative Examples 5 and 6 70 parts by weight of a polyamide resin (Leona 1300 manufactured by Asahi Kasei Corporation) and 30 parts by weight of glass fiber (ECS03T-289) were used, and a glass fiber composite 66 was prepared in the same manner as in Example 1. Made of nylon material. 50 parts by weight of magnesium oxide shown in Table 2 was blended with 100 parts by weight of this glass fiber composite material, and both materials were supplied from the main feeder.
The pellets were melt-kneaded with the kneading extruder used in 1. to obtain pellets, and the thermal conductivity before and after the high temperature and high humidity treatment (80 ° C., 90%, 30 days) was evaluated. The results are also shown in Table 2.
【００２８】[0028]
【表２】 [Table 2]
【００２９】比較例７
実施例６で作ったガラス繊維複合６６ナイロン材料１０
０重量部に対し、黄銅粉（福田金属箔粉工業社製 Ｂｒ
ａ−Ａｔ−１００）１６０重量部配合し、実施例１で使
用した混練押出機で熔融混練しペレットを得た。熱伝導
度は、０．８２Ｗ／ｍＫ、電気抵抗は１ｋΩであり、電
気絶縁性は不十分であった。Comparative Example 7 Glass Fiber Composite 66 Nylon Material 10 Made in Example 6
Brass powder (Brass from Fukuda Metal Foil & Powder Co., Ltd.
160 parts by weight of a-At-100) were mixed and melt-kneaded with the kneading extruder used in Example 1 to obtain pellets. The thermal conductivity was 0.82 W / mK, the electrical resistance was 1 kΩ, and the electrical insulation was insufficient.
【００３０】実施例１〜６より、本発明の熱可塑性樹脂
組成物は、機械物性、熱伝導性及び電気絶縁性に優れて
いる。From Examples 1 to 6, the thermoplastic resin composition of the present invention is excellent in mechanical properties, thermal conductivity and electric insulation.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) C08L 77/00 - 77/12 ─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. 7 , DB name) C08L 77/00-77/12
Claims (2)
ラス繊維１０〜１７０重量部、酸化マグネシウム２０〜
２５０重量部含有してなる熱可塑性樹脂組成物であっ
て、該酸化マグネシウムの表面積がＢＥＴ法で５ｍ2 ／
ｇ以下であることを特徴とする熱可塑性樹脂組成物。1. To 100 parts by weight of polyamide resin, 10 to 170 parts by weight of glass fiber and 20 to 20 parts of magnesium oxide.
A thermoplastic resin composition containing 250 parts by weight, wherein the magnesium oxide has a surface area of 5 m 2 / BET method.
A thermoplastic resin composition characterized by being g or less.
面処理されている請求項１記載の熱可塑性樹脂組成物。2. The thermoplastic resin composition according to claim 1, wherein the magnesium oxide is surface-treated with a coupling agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31823097A JP3406816B2 (en) | 1997-11-19 | 1997-11-19 | Thermoplastic resin composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31823097A JP3406816B2 (en) | 1997-11-19 | 1997-11-19 | Thermoplastic resin composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11148007A JPH11148007A (en) | 1999-06-02 |
| JP3406816B2 true JP3406816B2 (en) | 2003-05-19 |
Family
ID=18096882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31823097A Expired - Fee Related JP3406816B2 (en) | 1997-11-19 | 1997-11-19 | Thermoplastic resin composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3406816B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100412135C (en) * | 2005-09-12 | 2008-08-20 | 上海汽车股份有限公司 | Thermoplastic plastic belt pulley material and its production method |
| CN100412134C (en) * | 2005-09-12 | 2008-08-20 | 上海汽车股份有限公司 | Resin and plastic belt pulley and its manufacturing method |
| JP2009531493A (en) * | 2006-03-29 | 2009-09-03 | ビーエーエスエフ ソシエタス・ヨーロピア | Thermally conductive polyamide |
| AT509091B1 (en) * | 2009-12-01 | 2011-09-15 | Isovoltaic Ag | SOLAR PANEL |
| BR112012026493A2 (en) * | 2010-04-16 | 2016-08-16 | Dsm Ip Assets Bv | injection molded parts produced from a polymeric composition comprising polyamide 410 (pa-410) |
| EP3162855A4 (en) | 2014-06-30 | 2018-02-21 | UBE Industries, Ltd. | Polyamide resin composition and molded article comprising same |
-
1997
- 1997-11-19 JP JP31823097A patent/JP3406816B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11148007A (en) | 1999-06-02 |
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