JPS63168456A - Polyamide resin composition for accessory part of engine - Google Patents
Polyamide resin composition for accessory part of engineInfo
- Publication number
- JPS63168456A JPS63168456A JP31585186A JP31585186A JPS63168456A JP S63168456 A JPS63168456 A JP S63168456A JP 31585186 A JP31585186 A JP 31585186A JP 31585186 A JP31585186 A JP 31585186A JP S63168456 A JPS63168456 A JP S63168456A
- Authority
- JP
- Japan
- Prior art keywords
- polyamide
- polyamide resin
- resin composition
- weight
- ratio
- 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
- 229920006122 polyamide resin Polymers 0.000 title claims abstract description 45
- 239000011342 resin composition Substances 0.000 title claims description 34
- 239000003365 glass fiber Substances 0.000 claims abstract description 20
- 239000000203 mixture Substances 0.000 claims abstract description 17
- 239000010445 mica Substances 0.000 claims abstract description 16
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 16
- 229920002292 Nylon 6 Polymers 0.000 claims abstract description 13
- 229920003235 aromatic polyamide Polymers 0.000 claims abstract description 13
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000000391 magnesium silicate Substances 0.000 claims abstract description 13
- 229910052919 magnesium silicate Inorganic materials 0.000 claims abstract description 13
- 235000019792 magnesium silicate Nutrition 0.000 claims abstract description 13
- 229920002302 Nylon 6,6 Polymers 0.000 claims abstract description 9
- 229920003231 aliphatic polyamide Polymers 0.000 claims abstract description 9
- 239000000835 fiber Substances 0.000 claims abstract description 9
- 238000010586 diagram Methods 0.000 claims abstract description 5
- 239000011256 inorganic filler Substances 0.000 claims description 23
- 229910003475 inorganic filler Inorganic materials 0.000 claims description 23
- 239000004760 aramid Substances 0.000 claims description 11
- 239000004953 Aliphatic polyamide Substances 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 6
- 229920001577 copolymer Polymers 0.000 claims description 3
- 238000000465 moulding Methods 0.000 abstract description 11
- 239000004952 Polyamide Substances 0.000 abstract description 5
- 229920002647 polyamide Polymers 0.000 abstract description 5
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 abstract 2
- 239000000945 filler Substances 0.000 abstract 2
- 229910052943 magnesium sulfate Inorganic materials 0.000 abstract 1
- 235000019341 magnesium sulphate Nutrition 0.000 abstract 1
- 229920000642 polymer Polymers 0.000 description 9
- 239000002245 particle Substances 0.000 description 7
- -1 and further Substances 0.000 description 6
- 238000001746 injection moulding Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 4
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- NAQMVNRVTILPCV-UHFFFAOYSA-N hexane-1,6-diamine Chemical compound NCCCCCCN NAQMVNRVTILPCV-UHFFFAOYSA-N 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000001361 adipic acid Substances 0.000 description 3
- 239000008188 pellet Substances 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 235000011037 adipic acid Nutrition 0.000 description 2
- 150000004984 aromatic diamines Chemical class 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- JBKVHLHDHHXQEQ-UHFFFAOYSA-N epsilon-caprolactam Chemical compound O=C1CCCCCN1 JBKVHLHDHHXQEQ-UHFFFAOYSA-N 0.000 description 2
- 150000004820 halides Chemical class 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000000088 plastic resin Substances 0.000 description 2
- 230000000379 polymerizing effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000454 talc Substances 0.000 description 2
- 229910052623 talc Inorganic materials 0.000 description 2
- IVSZLXZYQVIEFR-UHFFFAOYSA-N 1,3-Dimethylbenzene Natural products CC1=CC=CC(C)=C1 IVSZLXZYQVIEFR-UHFFFAOYSA-N 0.000 description 1
- 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 1
- 239000004604 Blowing Agent Substances 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- FDLQZKYLHJJBHD-UHFFFAOYSA-N [3-(aminomethyl)phenyl]methanamine Chemical compound NCC1=CC=CC(CN)=C1 FDLQZKYLHJJBHD-UHFFFAOYSA-N 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- ZETYUTMSJWMKNQ-UHFFFAOYSA-N n,n',n'-trimethylhexane-1,6-diamine Chemical compound CNCCCCCCN(C)C ZETYUTMSJWMKNQ-UHFFFAOYSA-N 0.000 description 1
- 239000002667 nucleating agent Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、（Ａ）ポリアミド６及び／又はポリアミド
６６である脂肪族ポリアミドと芳香族ポリアミドとから
なる特定の組成比のポリアミド樹脂と、（Ｂ）ガラス繊
維、マイカ及び硅酸マグネシウムからなる特定の組成比
の無機充填剤とからなるエンジン周り部品用ポリアミド
組成物に係るものであり、この発明のポリアミド組成物
は、シリンダーヘッドカバーなどのエンジン周り部品に
成形された場合に、その部品の高温使用時に剛性を保持
し、成形時の変形（特に、ソリ）が実質的になく、また
、表面性の極めて高いものを得ることができる。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to (A) a polyamide resin having a specific composition ratio of an aliphatic polyamide and an aromatic polyamide, which are polyamide 6 and/or polyamide 66; B) This relates to a polyamide composition for engine-related parts, which is composed of glass fiber, mica, and an inorganic filler with a specific composition ratio of magnesium silicate. When molded into parts, the parts retain their rigidity during high-temperature use, are substantially free from deformation (particularly warpage) during molding, and can have extremely high surface properties.
シリンダーヘッドカバーなどのエンジン周り部品は、プ
ラスチック樹脂から成形した場合には、その成形品の内
外のシール性（気密性）を保持していることが必要不可
欠の条件であると言われている。しかし、従来公知のプ
ラスチック樹脂から成形されたエンジンカバーを使用し
た場合には、エンジンに直結する部品であるので、かな
り高い温度（例えば、約１２０℃以上となる）となり、
そのような高温において、公知の樹脂製エンジンカバー
は剛性が無くなり、パツキンの反発力などで変形し永久
変形が残り、気密性が無くなり、ガス、オイルなどの漏
れが発生したりするのである。When engine parts such as cylinder head covers are molded from plastic resin, it is said to be an essential condition that the molded product maintains sealing properties (airtightness) inside and outside. However, when an engine cover molded from a conventionally known plastic resin is used, since it is a part directly connected to the engine, the temperature is quite high (for example, about 120°C or more).
At such high temperatures, known resin engine covers lose their rigidity, deform due to the repulsive force of the gaskets, and remain permanently deformed, losing airtightness and causing gas, oil, etc. to leak.
最近、高剛性で、特に高温時においてもかなりの剛性を
保持することができる「ナイロン樹脂をベースにしたガ
ラス繊維強化材料ＣＭｉ成物）Ｊが提案されている（特
開昭５１−５０９６０号、特開昭５４−１８８５４号、
特開昭５９−１６８０５８号などを参照）が、それの公
知のガラス繊維のみを充填したポリアミド樹脂組成物で
は、射出成形で成形品を成形した際に成形品（エンジン
カバー）のシール面などのソリが大きく寸法安定性がな
く、そのような成形品は初めからガス漏れなどを生ずる
ことがしばしばあり、さらに、前記のガラス繊維強化材
料はその表面性が充分に高いものではなく、適当ではな
かった。Recently, a ``nylon resin-based glass fiber-reinforced material CMi composite'' has been proposed (Japanese Patent Application Laid-Open No. 51-50960, Japanese Patent Publication No. 54-18854,
JP-A No. 59-168058, etc.) However, in the known polyamide resin composition filled only with glass fiber, when the molded product is molded by injection molding, the sealing surface of the molded product (engine cover) etc. The warpage is large and the dimensional stability is not stable, and such molded products often cause gas leakage from the beginning.Furthermore, the glass fiber reinforced material mentioned above does not have a sufficiently high surface property and is not suitable. Ta.
上述のような状況において、エンジン周り部品として成
形した場合に、その成形品が、高温使用時にも充分な剛
性を保持し、しかも、成形時にソリがなく寸法安定性を
存していると共に、表面性が極めて優れているようにす
ることができる「ポリアミド樹脂と無機充填剤とのハイ
ブリット材料ｊが、求められていたが、そのような性能
をすべて有している材料は従来無かったのである。In the above-mentioned situation, when molded as an engine-related part, the molded product retains sufficient rigidity even during high-temperature use, has dimensional stability without warping during molding, and has a smooth surface. There has been a demand for a hybrid material of polyamide resin and inorganic filler that can have extremely excellent properties, but there has been no material that has all of these properties.
この発明者らは、成形時に、ソリを起こさず、しかも成
形品の高温使用時に剛性を保持させることができると共
に、しかも成形品の表面外観性に優れているものとする
ことができるポリアミド樹脂組成物について、鋭意研究
した結果、（Ａ）ポリアミド６及び／又はポリアミド６
６である脂肪族ポリアミドと芳香族ポリアミドとからな
る特定の組成のポリアミド樹脂と、（Ｂ）ガラス繊維、
マイカ及び硅酸マグネシウムからなる特定の組成比の無
機充填剤とからなるポリアミド組成物が、前述の問題点
を一挙に解決でき、エンジン周り部品の成形に好適に使
用できることを見い出し、この発明を完成した。The inventors have developed a polyamide resin composition that does not cause warpage during molding, can maintain rigidity during high-temperature use of molded products, and can provide molded products with excellent surface appearance. As a result of intensive research on the material, (A) polyamide 6 and/or polyamide 6
(B) glass fiber,
It was discovered that a polyamide composition consisting of an inorganic filler consisting of mica and magnesium silicate in a specific composition ratio can solve the above-mentioned problems at once, and can be suitably used for molding engine-related parts, and has completed this invention. did.
〔本発明の問題点を解決するための手段〕すなわち、こ
の発明は、
（Ａ）相対粘度（ηｒ）が２．０〜３．５であるポリア
ミド６および／またはポリアミド６６、あるいはポリア
ミド６．６６共重合体からなる脂肪族ポリアミドと、芳
香族ポリアミドとからなり、しかも、脂肪族ポリアミド
と芳香族ポリアミドとの配合比（重量比）が９８：２〜
６０ ： ４０であるポリアミド樹脂；１００重量部と
、
（Ｂ）（ａ）平均繊維径２〜２０μｍのガラス繊維、（
ｂ）マイカ、および（ｃ）硅酸マグネシラ仏からなる無
機充填剤；２０〜１２０重量部とからなり、しかも、
その無機充填剤の各成分組成が、三角図表で示される次
の各点、
Ａ点（ａ＝３５、ｂ＝３５、Ｃ＝３０）Ｂ点（ａ＝６０
、ｂ−３５、ｃ＝５）
０点（ａ−１０，ｂ−８５、ｃ−５）
Ｄ点（ａ＝１０Ｓｂ−６０Ｓｃ＝３０）で囲まれた範囲
内の組成比（重量％で示す）であることを特徴とするエ
ンジン周り部品用ポリアミド樹脂組成物に関する。[Means for solving the problems of the present invention] That is, the present invention provides (A) polyamide 6 and/or polyamide 66 having a relative viscosity (ηr) of 2.0 to 3.5, or polyamide 6.66; It is made of an aliphatic polyamide made of a copolymer and an aromatic polyamide, and the blending ratio (weight ratio) of the aliphatic polyamide and the aromatic polyamide is 98:2 to 98:2.
60: 100 parts by weight of a polyamide resin having a ratio of 40; (B) (a) glass fibers having an average fiber diameter of 2 to 20 μm; (
b) an inorganic filler consisting of mica, and (c) magnesilla silicate; 20 to 120 parts by weight, and the composition of each component of the inorganic filler is shown at each of the following points in a triangular diagram: A Point (a=35, b=35, C=30) Point B (a=60
, b-35, c=5) 0 point (a-10, b-85, c-5) Composition ratio within the range surrounded by D point (a=10Sb-60Sc=30) (expressed in weight%) The present invention relates to a polyamide resin composition for engine-related parts, characterized in that:
この発明で使用する脂肪族ポリアミドは、ＪｒＳＫ６８
１０の試験法に従って、ポリマー濃度；０．２５ ｇ
／ ２５ ｍｍ！溶媒、溶媒；９８重量％の硫酸、およ
び測定温度２５℃の測定条件で測定された溶液粘度から
算出された相対粘度（ηｒ）が、２．０〜３．５、好ま
しくは２．２〜３．０程度であるポリアミド６および／
またはポリアミド６６、あるいはポリアミド６／６６共
重合体である。The aliphatic polyamide used in this invention is JrSK68
According to test method 10, polymer concentration; 0.25 g
/ 25mm! Solvent; relative viscosity (ηr) calculated from the solution viscosity measured under the measurement conditions of 98% by weight sulfuric acid and a measurement temperature of 25°C is 2.0 to 3.5, preferably 2.2 to 3. Polyamide 6 and/or about .0
Or polyamide 66 or polyamide 6/66 copolymer.
前記のポリアミド６は、８−カプロラクタムを重合して
得られる高分子重合体であり、また、ポリアミド６６は
、ヘキサメチレンジアミンとアジピン酸とを重合して得
られる高分子重合体であり、さらに、ポリアミド６．６
６共重合体は、ε−カプロラクタムと、ヘキサメチレン
ジアミン及びアジピン酸とを共重合して得られる、ポリ
アミド６構成成分とポリアミド６６構成成分とのモル比
（６／６６）が好ましくはｌ／９９〜３０／７０あるい
は７０／３０〜９９／ １ 、特に好ましくは３／９７
〜２０／８０あるいは８０／２０〜９７／３である高分
子重合体である。The above polyamide 6 is a high molecular polymer obtained by polymerizing 8-caprolactam, and polyamide 66 is a high molecular polymer obtained by polymerizing hexamethylene diamine and adipic acid, and further, polyamide 6.6
The copolymer 6 is obtained by copolymerizing ε-caprolactam, hexamethylene diamine, and adipic acid, and the molar ratio (6/66) of the polyamide 6 component and the polyamide 66 component is preferably l/99. ~30/70 or 70/30 to 99/1, particularly preferably 3/97
~20/80 or 80/20 to 97/3.
前記の脂肪族ポリアミドの相対粘度が小さくなり過ぎる
と、耐衝撃性などの機械物性が低下した成形品しか得ら
れないので適当ではなく、また、前記相対粘度があまり
に大きくなり過ぎると、ポリアミド樹脂組成物の流動性
が低下し、成形性が悪化し、しかも、成形品の表面性（
表面外観）が悪化するので適当ではない。If the relative viscosity of the aliphatic polyamide becomes too small, it is not suitable because only molded products with reduced mechanical properties such as impact resistance can be obtained, and if the relative viscosity becomes too large, the polyamide resin composition The fluidity of the product decreases, the moldability deteriorates, and the surface properties of the molded product (
It is not suitable because it deteriorates the surface appearance (surface appearance).
この発明で使用する芳香族ポリアミドは、平均分子量が
１２０００〜５００００、特に１３０００〜２５０００
程度であるものが好ましく、さらに融点が２００〜３０
０℃、もしくは軟化点が１００〜２５０℃程度であるも
のが好ましく、例えば、
（ａ）メタキシリレンジアミンなどの芳香族ジアミンと
ジカルボン酸またはそのハロゲン化物などのジカルボン
酸系化合物との重合体、（ｂ）トリメチルへキサメチレ
ンジアミンなどの脂肪族ジアミンとテレフタル酸または
そのハロゲン化物などの芳香族ジカルボン酸系化合物と
の重合体、
（Ｃ）メタキシレンジアミンなどの芳香族ジアミンとテ
レフタル酸またはそのハロゲン化物などの芳香族ジカル
ボン酸系化合物との重合体などを挙げることができる。The aromatic polyamide used in this invention has an average molecular weight of 12,000 to 50,000, particularly 13,000 to 25,000.
It is preferable that the melting point is about 200 to 30
0° C. or those having a softening point of about 100 to 250° C. are preferable, such as (a) a polymer of an aromatic diamine such as metaxylylene diamine and a dicarboxylic acid compound such as dicarboxylic acid or its halide; (b) A polymer of an aliphatic diamine such as trimethylhexamethylene diamine and an aromatic dicarboxylic acid compound such as terephthalic acid or its halide; (C) A polymer of an aromatic diamine such as metaxylene diamine and terephthalic acid or its halogen. Examples include polymers with aromatic dicarboxylic acid compounds such as compounds.
この発明において使用されるポリアミド樹脂成分は、脂
肪族ポリアミドと芳香族ポリアミドとの配合比（重量比
）が９８：２〜６０ ： ４０、好ましくは９６：４〜
６５ ： ３５程度の組成物である。The polyamide resin component used in this invention has a blending ratio (weight ratio) of aliphatic polyamide and aromatic polyamide of 98:2 to 60:40, preferably 96:4 to 60:40.
The composition is about 65:35.
この発明において、ポリアミド樹脂の一成分として使用
する芳香族ポリアミドの使用量が余りに少なくなり過ぎ
ると、そのようなポリアミド樹脂組成物から得られた成
形品の表面性（特に表面光沢性）が悪化するので適当で
はなく、また、芳香族ポリアミドの使用量があまりに多
くなり過ぎると、そのようなポリアミド樹脂組成物を使
用して射出成形より成形を行う際に、冷却の為の時間が
多く必要となり、成形サイクルが長くなったり、成形品
を取り出す時に成形品に変形を生じるので適当ではない
。In this invention, if the amount of aromatic polyamide used as a component of the polyamide resin is too small, the surface properties (especially surface gloss) of the molded product obtained from such a polyamide resin composition will deteriorate. Therefore, if the amount of aromatic polyamide used is too large, a lot of time will be required for cooling when injection molding is performed using such a polyamide resin composition. This is not suitable because it lengthens the molding cycle and causes deformation of the molded product when it is taken out.
前記の無機充填剤の一成分であるガラス繊維としては、
平均繊維径が２〜２０μｍ、特に好ましくは３〜１５μ
ｍ１さらに好ましくは４〜１０μｍ程度であればよく、
さらに、前記ガラス繊維のアスペクト比（繊維長さ／繊
維径の比）が、成形品中において、３〜７０、特に好ま
しくは５〜５０程度であることが好ましい。The glass fiber, which is a component of the above-mentioned inorganic filler, is
Average fiber diameter is 2 to 20 μm, particularly preferably 3 to 15 μm
m1 is more preferably about 4 to 10 μm,
Furthermore, it is preferable that the aspect ratio (ratio of fiber length/fiber diameter) of the glass fibers is about 3 to 70, particularly preferably about 5 to 50, in the molded article.
前記のガラス繊維の繊維径が余りに小さくなり過ぎると
得られるポリアミド樹脂組成物の流動性が低下するので
適当ではなく、また、繊維径が余りに大きくなり過ぎる
と、そのようなポリアミド樹脂組成物から得られた成形
品が耐衝撃性などの機械物性、高温時の特性（例えば、
曲げ弾性率）などが低下するので適当ではない。If the fiber diameter of the glass fibers described above is too small, the fluidity of the resulting polyamide resin composition will be reduced, which is not appropriate; if the fiber diameter is too large, the resulting polyamide resin composition will not be suitable. The resulting molded product has improved mechanical properties such as impact resistance, and properties at high temperatures (e.g.
It is not suitable because the flexural modulus (flexural modulus) etc. will decrease.
また、ガラス繊維のアスペクト比が、余りに小さくなり
過ぎると、そのようなガラス繊維を含有するポリアミド
樹脂組成物から成形された成形品の剛性（１４０℃での
曲げ弾性率）が低くなるので好ましくな（、また、アス
ペクト比が余りに大きくなり過ぎると、そのようなガラ
ス繊維を含有するポリアミド樹脂組成物から成形された
成形品のソリが大きくなるので好ましくない。Furthermore, if the aspect ratio of the glass fibers becomes too small, the rigidity (flexural modulus at 140° C.) of a molded article formed from a polyamide resin composition containing such glass fibers will decrease, which is not preferable. (Also, if the aspect ratio becomes too large, the warpage of a molded article formed from such a polyamide resin composition containing glass fibers will become large, which is not preferable.
前記のマイカとしては、粒子径が２０μｍ以下、特に１
〜１５μｍ程度であることが好ましく、前記の粒子径が
余りに大きくなり過ぎると、そのようなマイカを使用さ
れているポリアミド樹脂組成物から成形された成形品の
耐衝撃性、および表面性などが低下するので好ましくな
い。The mica mentioned above has a particle size of 20 μm or less, especially 1
The particle size is preferably about 15 μm. If the particle size is too large, the impact resistance and surface properties of molded products made from polyamide resin compositions using such mica will deteriorate. Therefore, it is not desirable.
前記の硅酸マグネシウムとしては、粒子径が約５μｍ以
下、特に２μｍ以下であるものが好ましく、例えば、タ
ルク、滑石などを挙げることができる。The above-mentioned magnesium silicate preferably has a particle size of about 5 μm or less, particularly 2 μm or less, and examples include talc and talc.
前記の硅酸マグネシウムの粒子径が余りに大きくなり過
ぎると、そのような硅酸マグネシウムを含有するポリア
ミド樹脂組成物から成形された成形品の特性（例えば、
衝撃強さ）が低下するので好ましくない。If the particle size of the magnesium silicate becomes too large, the characteristics of the molded article formed from the polyamide resin composition containing such magnesium silicate (for example,
This is not preferable because the impact strength (impact strength) decreases.
この発明のポリアミド樹脂組成物は、前記の無機充填剤
の各成分の組成が、第１図に示す三角図表において示さ
れる前述のＡ−Ｄ点で囲まれた範囲内の組成比であれば
よいが、特に、次に示す各点、
Ａ′点（ａ＝３５、ｂ ＝３７．５、Ｃ＝２７．５）Ｂ
′点（ａ＝５５、ｂ ＝３７．５、ｃ＝７．５）Ｃ′点
（ａ＝１５、ｂ ＝７７．５、ｃ＝７．５）Ｄ′点（ａ
＝１５、ｂ＝５７．５、Ｃ＝２７．５）で囲まれた範囲
内の組成比であることが好ましい。In the polyamide resin composition of the present invention, the composition ratio of each component of the inorganic filler may be within the range surrounded by the above-mentioned points A-D shown in the triangular diagram shown in FIG. However, in particular, each of the following points, A' point (a = 35, b = 37.5, C = 27.5) B
Point '(a = 55, b = 37.5, c = 7.5) Point C' (a = 15, b = 77.5, c = 7.5) Point D' (a
= 15, b = 57.5, C = 27.5).
この発明では、ポリアミド樹脂組成物に含有されている
ガラス繊維、マイカ及び硅酸マグネシウムからなる無機
充填剤の全量に対するガラス繊維の含有率は１０〜６０
重量％、好ましくは１５〜５５重量％であり、前記のガ
ラス繊維の含有率が余りに少なくなり過ぎると、そのよ
うなポリアミド樹脂組成物から成形された成形品は高温
時の剛性（曲げ弾性率）が悪化するので適当ではなく、
また、前記のガラス繊維の含有率が余りに多くなり過ぎ
ると、そのようなポリアミド樹脂組成物から成形品を成
形する際に、成形品のソリが大きくなるので適当ではな
い。In this invention, the content ratio of glass fiber to the total amount of the inorganic filler consisting of glass fiber, mica, and magnesium silicate contained in the polyamide resin composition is 10 to 60%.
% by weight, preferably from 15 to 55% by weight, and if the content of the glass fibers is too low, the molded article molded from such a polyamide resin composition will have low rigidity (flexural modulus) at high temperatures. It is not appropriate because it will worsen the
Furthermore, if the content of the glass fibers is too high, it is not appropriate because the warpage of the molded product becomes large when molded from such a polyamide resin composition.
また、ポリアミド樹脂組成物に含有されている無機充填
剤の全量に対するマイカの含有率は３５〜８５重量％、
好ましくは３７．５〜７７．５重量％であり、前記のマ
イカの含有率が余りに少なくなり過ぎると、そのような
ポリアミド樹脂組成物から成形された成形品は高温時特
性（例えば、曲げ弾性率、曲げクリープ）が悪化するの
で適当ではなく、また、前記のマイカの含有率が余りに
多くなり過ぎると、そのようなポリアミド樹脂組成物か
ら成形された成形品の表面にマイカなど無機質充填剤の
浮き上がりが多くなり、表面性が悪化するので適当では
ない。In addition, the mica content with respect to the total amount of inorganic filler contained in the polyamide resin composition is 35 to 85% by weight,
Preferably it is 37.5 to 77.5% by weight; if the mica content is too low, molded articles made from such a polyamide resin composition will have poor high-temperature properties (e.g. flexural modulus). This is not appropriate because it worsens the mica content (bending creep, bending creep, etc.), and if the mica content is too high, the inorganic filler such as mica may float on the surface of the molded product made from such a polyamide resin composition. This is not suitable because it increases the number of particles and deteriorates the surface properties.
さらに、ポリアミド樹脂組成物に含有されている無機充
填剤全量に対する硅酸マグネシウムの含有率は５〜３０
重量％、好ましくは７．５〜２７．５重量％であり、前
記の硅酸マグネシウムの含有率が余りに少なくなり過ぎ
ると、そのようなポリアミド樹脂組成物から成形された
成形品は、ソリが多くなるので適当ではなく、また、前
記の硅酸マグネシウムの含有率が余りに多くなり過ぎる
と、そのようなポリアミド樹脂組成物から成形された成
形品は、無機質成分が表面に浮き出し表面性が悪化する
ので適当ではない。Furthermore, the content of magnesium silicate with respect to the total amount of inorganic filler contained in the polyamide resin composition is 5 to 30%.
% by weight, preferably from 7.5 to 27.5% by weight, and if the content of magnesium silicate is too low, the molded product formed from such a polyamide resin composition will have a lot of warpage. In addition, if the content of magnesium silicate is too high, the inorganic components will protrude to the surface of the molded product made from such a polyamide resin composition, deteriorating the surface properties. It's not appropriate.
この発明におけるポリアミド樹脂組成物は、ポリアミド
樹脂１００重量部と、前述の無機充填剤２０〜１２０重
量部、好ましくは３０〜１００重量部とからなる組成物
である。The polyamide resin composition in this invention is a composition comprising 100 parts by weight of the polyamide resin and 20 to 120 parts by weight, preferably 30 to 100 parts by weight, of the above-mentioned inorganic filler.
前記の無機充填剤の配合割合が余りに小さくなり過ぎる
と、待に高温時の剛性が悪化するという傾向があるので
適当ではなく、また、前記の無機充填剤の配合割合が余
りに大きくなり過ぎると、成形性、表面性（表面の外観
）が悪化するので適当ではない。If the blending ratio of the inorganic filler is too small, the rigidity at high temperatures tends to deteriorate, which is not appropriate, and if the blending ratio of the inorganic filler is too large, It is not suitable because it deteriorates moldability and surface properties (surface appearance).
この発明のポリアミド樹脂組成物は、前述の無機充填剤
のほかに、必要であれば、種々の添加剤、例えば、耐熱
剤、紫外線吸収剤を含む耐候性剤、歎燃剤、帯電防止剤
、滑剤、可塑剤、核剤、発泡剤、着色剤、カップリング
剤、安定剤などの添加剤を約２０重量％以下、特に１５
重量％以下の割合で含有させることができる。In addition to the above-mentioned inorganic filler, the polyamide resin composition of the present invention may contain, if necessary, various additives, such as a heat resistant agent, a weathering agent including an ultraviolet absorber, a flame retardant, an antistatic agent, and a lubricant. , plasticizers, nucleating agents, blowing agents, colorants, coupling agents, stabilizers and other additives of up to about 20% by weight, especially 15% by weight.
It can be contained in a proportion of not more than % by weight.
この発明のポリアミド樹脂組成物は、ポリアミド樹脂に
ガラス繊維、マイカ、硅酸マグネシウムなどの無機充填
剤を配合する公知の配合方法のいずれでも調製、または
成形して得ることができ、例えば、ポリアミド樹脂の製
造時に、あるいは製造直後などに、溶融状態にあるポリ
アミド樹脂に無機充填剤の各成分を添加して、混練・配
合する方法、粉末状又はベレット状に形成されているポ
リアミド樹脂に粉末状の無機充填剤の各成分を添加して
配合し、その結果得られた粉末混合物を溶融混練して配
合する方法などを挙げることができる。The polyamide resin composition of the present invention can be prepared by any known compounding method of blending a polyamide resin with an inorganic filler such as glass fiber, mica, or magnesium silicate, or can be obtained by molding the polyamide resin. A method in which each component of an inorganic filler is added to a molten polyamide resin during or immediately after production, and then kneaded and blended. Examples include a method in which each component of the inorganic filler is added and blended, and the resulting powder mixture is melt-kneaded and blended.
この発明のポリアミド樹脂組成物は、公知の成形方法、
例えば、射出成形法、押出成形法、圧縮成形法などによ
って、成形品に成形することができる。The polyamide resin composition of this invention can be produced by a known molding method,
For example, it can be formed into a molded article by injection molding, extrusion molding, compression molding, or the like.
実施例、比較例において、曲げ弾性率は、１４０℃の雰
囲気で、’ＡＳＴＭ ０７９０ Ｊに従って測定し、ま
た、ソリの測定は、製品の測定面の任意の３点を基準と
して基準からの最大値および最小値を測定し、最大値−
最小値をソリ量とした。In the Examples and Comparative Examples, the flexural modulus was measured in an atmosphere of 140°C according to ASTM 0790 J, and warp was measured using the maximum value from the standard using three arbitrary points on the measurement surface of the product as a reference. and the minimum value, and the maximum value −
The minimum value was taken as the amount of warpage.
また、成形品の表面性を示す光沢度は、それぞれのポリ
アミド樹脂組成物を射出成形して製作した各試験片（長
さ： １２５ｍ、幅ニア５ｆｌ、厚さ：３ｆｌ）の平
面中央部の光沢度をｒＡＳＴＭ ０５２３ Ｊに従いス
ガ試験機■製のデジタルカラーメーターによって測定し
た。In addition, the glossiness, which indicates the surface properties of the molded product, is the glossiness of the central part of the plane of each test piece (length: 125m, width near 5fl, thickness: 3fl) manufactured by injection molding each polyamide resin composition. The strength was measured using a digital color meter manufactured by Suga Test Instruments ■ in accordance with rASTM 0523 J.
実施例１および５
ポリアミド６のペレット（ηｒ−２．６０、宇部興産■
製、製品名；ＵＢＥナイロン１０１３Ｂ）８０重量部と
、芳香族ポリアミドＡ（メタキシリレンジアミン−アジ
ピン酸系重合体、平均分子ｌ ： １８０００、融点：
２４３℃）または芳香族ポリアミドＢ（１−リメチルへ
キサメチレンジアミン−テレフタル酸系重合体（ダイナ
ミックノーベル社製、商品名ニドロガミドＴ１ビカット
軟化点：１５０℃）〕 ２２０重量とからなるポリアミ
ド樹脂（合計で１００重量部）に、平均繊維径１０μｍ
の（ａ）ガラス繊維２９重量部、平均粒子径１５μｍの
（ｂ）マイカ４４重量部、および粒子径１．８μｍの（
ｃ）硅酸マグネシウム１９重量部からなる無機充填剤９
２重量部（組成比； ａ ＝３１．５重量％、ｂ＝４７
．８重世％、ｃ−２０，７重量％）を配合し、溶融混練
して、ポリアミド樹脂組成物のベレットを作成した。Examples 1 and 5 Polyamide 6 pellets (ηr-2.60, Ube Industries ■
80 parts by weight of aromatic polyamide A (methaxylylenediamine-adipic acid polymer, average molecular weight: 18,000, melting point:
243℃) or aromatic polyamide B (1-limethylhexamethylenediamine-terephthalic acid polymer (manufactured by Dynamic Nobel, trade name Nidrogamid T1 Vicat softening point: 150℃)) 100 parts by weight), average fiber diameter 10 μm
(a) 29 parts by weight of glass fiber, (b) 44 parts by weight of mica, with an average particle size of 15 μm, and (
c) Inorganic filler 9 consisting of 19 parts by weight of magnesium silicate
2 parts by weight (composition ratio; a = 31.5% by weight, b = 47
．． C-20, 7% by weight) was blended and melt-kneaded to create a pellet of polyamide resin composition.
このポリアミド樹脂組成物のベレットを使用して、試験
用ピース（形状；角柱、サイズ；１／２ＸＩ／４Ｘ５イ
ンチ）およびエンジンヘッドカバー（形状；第２図参照
、サイズ；最大長さ４３０龍、厚さく平均）２．５ｍｍ
）、並びに光沢度測定用の前述の試験片を、第１表の成
形条件（ただし、金型温度；８０℃）で射出成形した結
果、その性状は第２表のとおりであった。Using this polyamide resin composition pellet, test pieces (shape; prismatic, size; 1/2XI/4X5 inch) and engine head cover (shape; see Figure 2, size; maximum length 430mm, thickness average) 2.5mm
) and the above-mentioned test piece for gloss measurement were injection molded under the molding conditions shown in Table 1 (mold temperature: 80°C), and the properties were as shown in Table 2.
実施例２〜４および６、比較例１〜２および参考例１〜
３
ポリアミド樹脂の種類を第２表に示すように変え、また
、無機充填剤の組成比を第２表に示すように変えたほか
は、実施例１または５と同様にして、ポリアミド樹脂組
成物を作成した。Examples 2-4 and 6, Comparative Examples 1-2 and Reference Examples 1-
3 A polyamide resin composition was prepared in the same manner as in Example 1 or 5, except that the type of polyamide resin was changed as shown in Table 2, and the composition ratio of the inorganic filler was changed as shown in Table 2. It was created.
それらのポリアミド樹脂組成物からのエンジンヘッド力
バーの試作の結果、およびテストピースの試験結果を第
２表に示す。Table 2 shows the results of prototype engine head force bars made from these polyamide resin compositions and the test results of test pieces.
第１表
シリンダ設定 樹脂温度 射出圧力 成形サイクツ温度
（’Ｃ） （’ｅ） （ｋｇ／ｃｄ） 時
間（ｓｅｃ）〔本発明の作用効果〕
この発明のエンジン周り部品用のポリアミド樹脂組成物
は、射出成形などの成形によって得られた成形品が「ソ
リｊなどを生ずることがなく、また、充分な機械物性と
共に、高温での高い剛性を保持することができ、しかも
表面外観性に優れた成形品を成形することができるので
ある。Table 1 Cylinder settings Resin temperature Injection pressure Molding temperature ('C) ('e) (kg/cd) Time (sec) [Actions and effects of the present invention] The polyamide resin composition for engine parts of the present invention is as follows: Molded products obtained by molding such as injection molding do not cause warping, have sufficient mechanical properties, maintain high rigidity at high temperatures, and have excellent surface appearance. It is possible to mold products.
第１図は、この発明に使用する無機充填剤の各成分の組
成比を示すための三角図表である。
第２図は、シリンダーヘッドカバーの上面図である。
第１図FIG. 1 is a triangular diagram showing the composition ratio of each component of the inorganic filler used in the present invention. FIG. 2 is a top view of the cylinder head cover. Figure 1
Claims (1)
および／またはポリアミド６６、あるいはポリアミド６
、６６共重合体からなる脂肪族ポリアミドと、芳香族ポ
リアミドとからなり、しかも、脂肪族ポリアミドと芳香
族ポリアミドとの配合比（重量比）が９８：２〜６０：
４０であるポリアミド樹脂；１００重量部と、 （ａ）平均繊維径２〜２０μｍのガラス繊維、（ｂ）マ
イカ、および（ｃ）硅酸マグネシウムからなる無機充填
剤；２０〜１２０重量部とからなり、しかも、 前記無機充填剤の各成分組成が、三角図表で示される次
の各点、 Ａ点（ａ＝３５、ｂ＝３５、ｃ＝３０） Ｂ点（ａ＝６０、ｂ＝３５、ｃ＝５） Ｃ点（ａ＝１０、ｂ＝８５、ｃ＝５） Ｄ点（ａ＝１０、ｂ＝６０、ｃ＝３０） で囲まれた範囲内の組成比であることを特徴とするエン
ジン周り部品用ポリアミド樹脂組成物。[Claims] Polyamide 6 having a relative viscosity (ηr) of 2.0 to 3.5
and/or polyamide 66, or polyamide 6
, 66 copolymer and an aromatic polyamide, and the blending ratio (weight ratio) of the aliphatic polyamide and the aromatic polyamide is 98:2 to 60:
40; 100 parts by weight; and an inorganic filler consisting of (a) glass fibers with an average fiber diameter of 2 to 20 μm, (b) mica, and (c) magnesium silicate; 20 to 120 parts by weight. , Moreover, each component composition of the inorganic filler is shown at the following points in a triangular diagram: Point A (a=35, b=35, c=30) Point B (a=60, b=35, c =5) An engine characterized by having a composition ratio within a range surrounded by point C (a=10, b=85, c=5) and point D (a=10, b=60, c=30). Polyamide resin composition for surrounding parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31585186A JPS63168456A (en) | 1986-12-29 | 1986-12-29 | Polyamide resin composition for accessory part of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31585186A JPS63168456A (en) | 1986-12-29 | 1986-12-29 | Polyamide resin composition for accessory part of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63168456A true JPS63168456A (en) | 1988-07-12 |
Family
ID=18070342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31585186A Pending JPS63168456A (en) | 1986-12-29 | 1986-12-29 | Polyamide resin composition for accessory part of engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63168456A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01263151A (en) * | 1988-04-15 | 1989-10-19 | Mitsubishi Gas Chem Co Inc | Polyamide resin composition |
| JPH02120360A (en) * | 1988-10-28 | 1990-05-08 | Toyoda Gosei Co Ltd | Polyamide resin composition |
| JPH03137158A (en) * | 1989-10-20 | 1991-06-11 | Toyoda Gosei Co Ltd | Vibration-damping molded resin article for engine |
| JPH06145513A (en) * | 1992-11-13 | 1994-05-24 | Mitsubishi Kasei Corp | Easily melt-moldable polyamide composition |
| WO2007046541A1 (en) * | 2005-10-20 | 2007-04-26 | Ube Industries, Ltd. | Material for fuel-system part |
| JP2009185151A (en) * | 2008-02-05 | 2009-08-20 | Idemitsu Kosan Co Ltd | Heat conductive resin composition |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5853950A (en) * | 1981-09-29 | 1983-03-30 | Toray Ind Inc | Underhood part for automobile |
| JPS5876451A (en) * | 1981-11-02 | 1983-05-09 | Mitsubishi Rayon Co Ltd | Improved polyamide resin composition |
-
1986
- 1986-12-29 JP JP31585186A patent/JPS63168456A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5853950A (en) * | 1981-09-29 | 1983-03-30 | Toray Ind Inc | Underhood part for automobile |
| JPS5876451A (en) * | 1981-11-02 | 1983-05-09 | Mitsubishi Rayon Co Ltd | Improved polyamide resin composition |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01263151A (en) * | 1988-04-15 | 1989-10-19 | Mitsubishi Gas Chem Co Inc | Polyamide resin composition |
| JPH02120360A (en) * | 1988-10-28 | 1990-05-08 | Toyoda Gosei Co Ltd | Polyamide resin composition |
| JPH03137158A (en) * | 1989-10-20 | 1991-06-11 | Toyoda Gosei Co Ltd | Vibration-damping molded resin article for engine |
| JPH06145513A (en) * | 1992-11-13 | 1994-05-24 | Mitsubishi Kasei Corp | Easily melt-moldable polyamide composition |
| WO2007046541A1 (en) * | 2005-10-20 | 2007-04-26 | Ube Industries, Ltd. | Material for fuel-system part |
| JP2009185151A (en) * | 2008-02-05 | 2009-08-20 | Idemitsu Kosan Co Ltd | Heat conductive resin composition |
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