JPH02229854A - Material for automobile external parts - Google Patents

Material for automobile external parts

Info

Publication number
JPH02229854A
JPH02229854A JP5006289A JP5006289A JPH02229854A JP H02229854 A JPH02229854 A JP H02229854A JP 5006289 A JP5006289 A JP 5006289A JP 5006289 A JP5006289 A JP 5006289A JP H02229854 A JPH02229854 A JP H02229854A
Authority
JP
Japan
Prior art keywords
parts
polyamide resin
automobile exterior
component
exterior parts
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
Application number
JP5006289A
Other languages
Japanese (ja)
Inventor
Ryuichi Deguchi
出口 隆一
Takesumi Nishio
西尾 武純
Akane Okada
岡田 茜
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Motor Corp
Toyota Central R&D Labs Inc
Ube Corp
Original Assignee
Toyota Motor Corp
Ube Industries Ltd
Toyota Central R&D Labs Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toyota Motor Corp, Ube Industries Ltd, Toyota Central R&D Labs Inc filed Critical Toyota Motor Corp
Priority to JP5006289A priority Critical patent/JPH02229854A/en
Publication of JPH02229854A publication Critical patent/JPH02229854A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To provide a material having excellent rigidity, dimensional stability, surface property and heat resistance, capable of being subjected to an on-line coating process and useful for automobile external parts such as bumpers by compounding a polyamide resin with a specific amount of a lamellar silicate salt and homogeneously dispersing the mixture. CONSTITUTION:(A) 100 pts.wt. of a polyamide resin having an average mol.wt. of 9000-30000 is dispersed with (B) 0.05-30 pts.wt. of a lamellar silicate salt having a thickness of 6-20Angstrom and one side length of 0.002-1mum to provide the objective material.

Description

【発明の詳細な説明】 [発明の目的] (産業上の利用分野) 本発明は、自動車外装部品用材料に関し、さらに詳しく
は,piれた剛性、寸法安定性及び表面性を有している
オンライン塗装可能な自動車外装部品用材料に関する。
[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to a material for automobile exterior parts, and more particularly, to a material having excellent rigidity, dimensional stability, and surface properties. Concerning materials for automotive exterior parts that can be painted online.

(従来の技術) ポリアミド樹脂は、その成形品が優れた機械的性質を有
することから、特に自動車外装や電気製品などの部品用
の射出成形材料として幅広く利用されている. しかしポリアミド樹脂は、過度の外力や熱が加えられる
ような条件で使用される部品等の材料として適用した場
合には、剛性及び耐熱性が十分ではな《、また吸水する
と剛性が低下したり寸法変化が大きいことから自動車外
装部品用材料としては必ずしも満足できるものではない
のが現状である. ポリアミドの剛性、耐熱性及び吸水による剛性の低下、
寸法変化を防止するために繊維状強化材を配合する方法
がある.しかし、この方法によると配合した繊維状強化
材が成形品の表面に露出することによる表面性の低下が
生じることがあり、塗装処理後に表面が乱反射するなど
の問題がある。
(Prior Art) Polyamide resin is widely used as an injection molding material for parts such as automobile exteriors and electrical products because its molded products have excellent mechanical properties. However, when polyamide resin is used as a material for parts that are used under conditions where excessive external force or heat is applied, it does not have sufficient rigidity and heat resistance. Currently, it is not necessarily satisfactory as a material for automobile exterior parts because of its large variations. Decrease in rigidity, heat resistance and rigidity due to water absorption of polyamide,
There is a method of adding fibrous reinforcement to prevent dimensional changes. However, according to this method, the blended fibrous reinforcing material may be exposed on the surface of the molded product, resulting in a decrease in surface properties, and there are problems such as diffuse reflection on the surface after painting.

(発明が解決しようとする問題点) 本発明は、自動車外装部品用材科として適用した場合の
ポリアミド樹脂の問題点を改良し、その成形体が優れた
剛性、寸法安定性、表面性及び耐熱性を有し、オンライ
ン塗装ができる自動車外装部品用材料を提供することを
目的とする.[発明の構成] (問題点を解決するための手段及び作用)本発明の自動
車外装部品用材料は,(A)ポリアミド樹脂100重量
部及び(B)前記(A)成分中に均一に分散されている
層状珪酸塩0.05〜30重量部からなることを特徴と
する.本発明の自動車外装部品用材料を構成する(A)
成分は、ポリアミド樹脂である.ポリアミド樹脂とは,
分子中に酸アミド結合(−CONH−)を有するもので
あり、具体的には、ε一カブロラクタム、6−アミノカ
ブロン酸、ω一エナントラクタム、7−アミノへブタン
酸、l1−アミノウンデカン酸,9−アミノノナン酸、
α−ビロリドン,α−ピベリドンなどから得られる重合
体または共重合体:へキサメチレンジアミン、ノナメチ
レンジアミン、ウンデカメチレンジアミン、ドデカメチ
レンジアミン、メタキシリレンジアミンなどのジアミン
とテレフタル酸、イソフタル酸、アジビン酸、セバシン
酸などのジカルポン酸とを重縮合して得られる重合体も
しくは共重合体もしくはこれらのブレンド物を例示する
ことができる. (A)成分のポリアミド樹脂は、平均分子量が9.00
0〜30.000のものが好ましい。
(Problems to be Solved by the Invention) The present invention improves the problems of polyamide resin when applied as a material for automobile exterior parts, and the molded product thereof has excellent rigidity, dimensional stability, surface property, and heat resistance. The purpose of this project is to provide materials for automobile exterior parts that can be painted online. [Structure of the Invention] (Means and Effects for Solving the Problems) The material for automobile exterior parts of the present invention is uniformly dispersed in (A) 100 parts by weight of a polyamide resin and (B) the component (A). It is characterized by comprising 0.05 to 30 parts by weight of layered silicate. (A) constituting the material for automobile exterior parts of the present invention
The component is polyamide resin. What is polyamide resin?
It has an acid amide bond (-CONH-) in its molecule, and specifically includes ε-cabrolactam, 6-aminocabrolic acid, ω-enantholactam, 7-aminohbutanoic acid, l1-aminoundecanoic acid, 9-aminononanoic acid,
Polymers or copolymers obtained from α-pyrrolidone, α-piveridone, etc.: diamines such as hexamethylene diamine, nonamethylene diamine, undecamethylene diamine, dodecamethylene diamine, metaxylylene diamine, terephthalic acid, isophthalic acid, Examples include polymers or copolymers obtained by polycondensation with dicarboxylic acids such as adivic acid and sebacic acid, or blends thereof. The polyamide resin of component (A) has an average molecular weight of 9.00.
0 to 30,000 is preferred.

本発明の自動車外装部品用材料を構成する(B)成分は
.層状珪酸塩である.この(B)成分は自動車外装部品
用材料に優れた剛性、寸法安定性、表面性及び耐熱性を
付与することに資する成分である. この層状珪酸塩とは、通常厚みが6〜20人で、一辺が
0.002κlumの範囲のものが好ましい. 層状珪酸塩は(A)成分中に分散した際、それぞれが平
均的に20人以上の層間距離を保ち、均一に分散するも
のであることが好ましい.ここで層間距離とは層状珪酸
塩の平板の重心間の距離を言い、均一に分散するとは層
状珪酸塩の一枚一枚が、もしくは平均的に重なりが5層
以下の多層物が平行に、またはランダムに,もしくは平
行とランダムが混在した状態で50重量%以上が、好ま
しくは70重量%以上が局所的な塊を形成することなく
分散する状態を言う.したがって、層状珪酸塩とは、厚
みが6〜20人で、一辺が0.002〜lumの物質の
一単位を示すものである。
The component (B) constituting the material for automobile exterior parts of the present invention is. It is a layered silicate. This component (B) is a component that contributes to imparting excellent rigidity, dimensional stability, surface properties, and heat resistance to materials for automobile exterior parts. This layered silicate usually has a thickness of 6 to 20 mm and preferably has a side of 0.002 klum. When the layered silicate is dispersed in component (A), it is preferable that each layer maintains an average interlayer distance of 20 or more and is uniformly dispersed. Here, the interlayer distance refers to the distance between the centers of gravity of the flat plates of layered silicate, and uniform dispersion means that each sheet of layered silicate is distributed in parallel, or that a multilayer structure with an average overlap of 5 or less layers is distributed in parallel. Or, it refers to a state in which 50% by weight or more, preferably 70% by weight or more, is dispersed randomly or in a mixed state of parallel and random without forming local lumps. Therefore, a layered silicate refers to a unit of material with a thickness of 6 to 20 lums and a side of 0.002 to lum.

このような層状珪酸塩の原料としては、珪酸マグネシウ
ムまたは珪酸アルミニウムの層から構成される層状フィ
ロ珪酸鉱物を例示することができる。具体的には、モン
モリロナイト、サポナイト、バイデライト,ノントロナ
イト,ヘクトライト、スティブンサイトなどのスメクタ
イト系粘土鉱物やバーミキュライト、ハロイサイトなど
を例示することができ、これらは天然のものであっても
、合成されたものであってもよい。これらのなかでもモ
ンモリロナイトが好ましい. (A)成分と(B)成分の配合量は,(A)成分100
重量部に対して(B)成分が0.05〜30重量部であ
る。(B)成分の配合割合が0.05重量部未満である
と成形体の剛性,寸法安定性及び耐熱性の向上が小さく
,30重量部を超えると材料の流動性が極端に低下し、
射出成形が困難になる. 本発明の自動車外装部品用材料には目的に応じて染料、
顔料、繊維状補強物、粒子状補強物、可塑剤、耐熱性、
発泡剤,n燃剤、耐衝撃性改良剤などを適宜、適量を配
合することができる.本発明の自動車外装部品用材料の
製造方法は特に制限されるものではなく、例えば次の方
法を適用することができる. (B)成分の層状珪酸塩の原料が多層状粘土鉱物である
場合には、膨潤化剤と接触させて、予め層間を拡げて層
間にモノマーを取り込みやすくした後,ポリアミドモノ
マーと混合し、重合する方法(特開昭62−74957
号公報参照)によってもよい.また、膨潤化剤に高分子
化合物を用い、予め層間を20人以上に拡げて、これを
ポリアミド樹脂もしくはこれを含む樹脂と溶融混練して
均一に分散させる方法によってもよい。
As a raw material for such a layered silicate, a layered phyllosilicate mineral composed of a layer of magnesium silicate or aluminum silicate can be exemplified. Specifically, examples include smectite clay minerals such as montmorillonite, saponite, beidellite, nontronite, hectorite, and stevensite, vermiculite, and halloysite, which may be natural or synthetic. It may be something that has been done. Among these, montmorillonite is preferred. The blending amount of component (A) and component (B) is 100% of component (A).
The amount of component (B) is 0.05 to 30 parts by weight. If the blending ratio of component (B) is less than 0.05 parts by weight, the improvement in the rigidity, dimensional stability, and heat resistance of the molded product will be small, and if it exceeds 30 parts by weight, the fluidity of the material will be extremely reduced.
Injection molding becomes difficult. Depending on the purpose, the material for automobile exterior parts of the present invention may include dyes,
Pigments, fibrous reinforcements, particulate reinforcements, plasticizers, heat resistance,
Foaming agents, n-flame agents, impact modifiers, etc. can be blended in appropriate amounts. The method for producing the material for automobile exterior parts of the present invention is not particularly limited, and for example, the following method can be applied. When the raw material for the layered silicate of component (B) is a multilayered clay mineral, it is brought into contact with a swelling agent to expand the interlayers in advance to make it easier to incorporate monomers between the layers, and then mixed with a polyamide monomer and polymerized. Method of
(Refer to the publication). Alternatively, a method may be used in which a polymer compound is used as a swelling agent, the gap between the layers is increased to 20 or more, and the polymer compound is melt-kneaded with a polyamide resin or a resin containing the same to uniformly disperse the compound.

本発明の自動車外装部品用材料は,塗装時及び実用時に
おいて高温高温雰囲気下にあるような部品、例えば、バ
ンパー、スポイラー、フードルバー、ホイルカバー、ホ
イルキャップ、グリルエプロン力バーフレームの用途に
使用することができる。
The material for automobile exterior parts of the present invention is used for parts that are exposed to high-temperature atmospheres during painting and practical use, such as bumpers, spoilers, hood lever bars, foil covers, foil caps, grill apron power bar frames, etc. can do.

(実施例) 実施例1 層状珪酸塩の一m位の厚みが平均的に9,5人で一辺の
平均長さが約0.1umのモンモリ口ナイトi 00g
を1012の水に分散し、これに51.2gの12−ア
ミノドデカン酸と24mlの濃塩酸を加え、5分間攪拌
したのち,i戸過した。さらにこれを十分洗浄したのち
、真空乾燥した.この操作により.12−アミノドデカ
ン酸アンモニウムイオンとモンモリロナイトの複合体を
調製した。複合体中の層状珪酸塩分は80重量%となっ
た6 次に、撹拌機付の反応容器に.lokgのε一カブロラ
クタム.1kgの水及び100gの前記複合体を入れ、
100℃で反応系内が均一な状態になるように撹拌した
.さらに温度を260℃にL昇させ、1 5 k g 
/ C m2の加圧下で1時間撹拌した。その後、故圧
し、水分を反応容器から揮散させながら、常圧下で3時
間反応を行った6反応終了後、反応容器の下部ノズルか
ら、スl・ランド状に取り出した反応物を水冷し、カッ
ティングを行い、ポリアミド樹脂(平均分子量15.0
00)及びモンモリロナイトからなるベレットを得た。
(Example) Example 1 Montmori Kuchinite i 00g with a layered silicate having a thickness of about 1 m and an average length of 9.5 people and an average side length of about 0.1 um.
was dispersed in 1,012 g of water, 51.2 g of 12-aminododecanoic acid and 24 ml of concentrated hydrochloric acid were added thereto, stirred for 5 minutes, and then filtered. After thoroughly washing this, it was vacuum dried. By this operation. A composite of ammonium 12-aminododecanoate ion and montmorillonite was prepared. The layered silicate content in the composite was 80% by weight6 Next, it was placed in a reaction vessel equipped with a stirrer. lokg ε-cabrolactam. Add 1 kg of water and 100 g of the complex,
The reaction system was stirred at 100°C to maintain a homogeneous state. Furthermore, the temperature was raised to 260℃, and 15 kg
Stirred for 1 hour under pressure of /C m2. After that, the reaction was carried out for 3 hours under normal pressure while reducing the pressure and volatilizing the water from the reaction vessel. 6 After the reaction was completed, the reactant was taken out in the form of a sl/land from the lower nozzle of the reaction vessel, cooled with water, and cut. Polyamide resin (average molecular weight 15.0
00) and montmorillonite were obtained.

このベレットを熱水中に浸漬し、未反応の七ノマー(約
10%)を抽出、除去したのち、真空中で乾燥して、本
発明の自動車外装部品用材料を得た. このようにして得られた材料を下記の成形条件で射出成
形して試験片を調製した.この試験片について下記の各
試験を行った.結果を表に示す.なお、表中の各構成成
分の配合量は,実際の配合量を重量部に換算して表示し
た.以下において同様である. 射出成形条件 射出成形機:東芝機械■製 IS−80シリンダー設定
温度:C+240℃:C2260℃;C.270゜CT
C.(ノズル)270℃ 射出圧力: 6 0 0 k g/am”金聖温度=8
8℃ 射出時間:lO秒 冷却時間=20秒 匠足方」 引張り降伏点強さ+ ASTM−D−638Faljf
r点伸U: AS’rM−D−638曲げ弾性率: A
STM−D−790 いずれの試験も23℃において絶乾状態で行った. 熱変形温度: ASTM−D−648 絶乾状態で試験した。
This pellet was immersed in hot water to extract and remove unreacted heptamer (approximately 10%), and then dried in vacuum to obtain the material for automobile exterior parts of the present invention. Test pieces were prepared by injection molding the material thus obtained under the following molding conditions. The following tests were conducted on this test piece. The results are shown in the table. The amounts of each component in the table are expressed by converting the actual amounts into parts by weight. The same applies to the following. Injection molding conditions Injection molding machine: IS-80 manufactured by Toshiba Machine ■Cylinder setting temperature: C+240℃:C2260℃;C. 270°CT
C. (Nozzle) 270℃ Injection pressure: 600 kg/am”Kinsei temperature=8
8℃ Injection time: lO seconds Cooling time = 20 seconds Tensile yield point strength + ASTM-D-638 Faljf
r point elongation U: AS'rM-D-638 flexural modulus: A
STM-D-790 All tests were conducted in an absolutely dry state at 23°C. Heat distortion temperature: ASTM-D-648 Tested in bone dry condition.

寸法変化率:水分含有率0%の試験片に3,5%量の水
分を含有させた場合の寸法変化を下記式から求めた。
Dimensional change rate: The dimensional change when a test piece with a moisture content of 0% was made to contain 3.5% moisture was determined from the following formula.

寸法変化率(%)= (吸水後の直角方向の寸法一吸水前の直角方向の寸法)
xl00/吸水前の直角方向の寸法表面性二目視により
評価した。
Dimensional change rate (%) = (Dimension in the right angle direction after water absorption - Dimension in the right angle direction before water absorption)
xl00/Dimensional surface properties in the right angle direction before water absorption were evaluated by second visual observation.

寸法安定性二図に示す形状の外装部品にブライマーとア
ミノアルキド樹脂塗料をこの順序で塗布し,次に140
℃、30分間の条件で焼き付けたのちに、図中のA点に
おける撓み量を測定することにより評価した. 実施例2、3 実施例lにおいて反応容器に入れたモンモリ口ナイト複
合体の量を200g (実施例2)又は500g (実
施例3)としたほかは実施例lと同様にして自動車外装
部品用材料を得た.この材料を用い、実施例lと同様に
して各試験を行った。結果を表に示す. 実施例4 実施例1で使用したモンモリ口ナイト複合体100gを
900gの水に分散し、これに25gの12−アミノド
デカン酸と500gのLC(εーカブロラクタム)を加
え、モンモリロナイ[・−ラクタム水溶液スラリーを{
鴫な、 次に、前記スラリーとポリアミドとしてナイロン66(
商品名UBEナイロン662020B)を二軸押出し機
TEX30 (四日本製鋼所製)により押出し機の設定
温度C.:250℃、C.:270℃.Cs:270℃
,グイ温度:270℃の条件で混練してナイロン66,
100重量部とモンモリロナイト1.66重量部の自動
車外装部品用材料を得た. この材料を用い、実施例lと同様にして各試験を行った
。結果を表に示す.なお、以上の実施例で得られた材料
の層状珪酸塩の層間距離をX#i回折・透過電顕写真で
測定したところ100人以上であった。
Dimensional Stability: Apply brimer and aminoalkyd resin paint in this order to the exterior parts having the shape shown in Figure 2, and then apply 140%
After baking at ℃ for 30 minutes, evaluation was made by measuring the amount of deflection at point A in the figure. Examples 2 and 3 A sample for automobile exterior parts was prepared in the same manner as in Example 1, except that the amount of Montmolystinite composite placed in the reaction vessel in Example 1 was changed to 200 g (Example 2) or 500 g (Example 3). I got the materials. Using this material, each test was conducted in the same manner as in Example 1. The results are shown in the table. Example 4 100 g of the montmorillonite complex used in Example 1 was dispersed in 900 g of water, and 25 g of 12-aminododecanoic acid and 500 g of LC (ε-cabrolactam) were added to form a montmorillonite [·-lactam aqueous solution slurry]. of{
Next, the slurry and nylon 66 (
Product name: UBE Nylon 662020B) was heated to C. :250℃, C. :270℃. Cs: 270℃
, Nylon 66 by kneading at a temperature of 270℃,
A material for automobile exterior parts containing 100 parts by weight and 1.66 parts by weight of montmorillonite was obtained. Using this material, each test was conducted in the same manner as in Example 1. The results are shown in the table. In addition, when the interlayer distance of the layered silicate of the material obtained in the above example was measured by X#i diffraction/transmission electron micrograph, it was 100 or more.

比較例l 実施例lにおいて、反応容器に複合体を仕込まずにε一
カブ口ラクタムlOkgと水1kgのみを仕込んだほか
は同様にして比較用の材料を得た. この材料を用い、実施例lと同様にして各試験を行った
.結果を表に示す. 比較例lで得たナイロン6、100部とガラス繊維42
.9部から実施例4と同様の方法で比較用の材料を得た
. この材料を用い、実施例4と同様にして各試験を行った
。結果を表に示す。
Comparative Example 1 A comparative material was obtained in the same manner as in Example 1, except that only 10 kg of ε-1 turnip lactam and 1 kg of water were charged without charging the complex into the reaction vessel. Using this material, various tests were conducted in the same manner as in Example 1. The results are shown in the table. 100 parts of nylon 6 obtained in Comparative Example 1 and 42 parts of glass fiber
.. A material for comparison was obtained from 9 parts in the same manner as in Example 4. Using this material, each test was conducted in the same manner as in Example 4. The results are shown in the table.

比較例2 [発明の効果〕 本発明の自動車外装部品用材料は、優れた剛性,耐候性
及び耐熱性を有している.
Comparative Example 2 [Effects of the Invention] The material for automobile exterior parts of the present invention has excellent rigidity, weather resistance, and heat resistance.

【図面の簡単な説明】[Brief explanation of the drawing]

図は寸法安定性の測定用部品である. The figure shows parts for measuring dimensional stability.

Claims (1)

【特許請求の範囲】[Claims] (A)ポリアミド樹脂100重量部及び(B)前記(A
)成分中に均一に分散されている層状珪酸塩0.05〜
30重量部からなることを特徴とする自動車外装部品用
材料。
(A) 100 parts by weight of polyamide resin and (B) the above (A)
) layered silicate uniformly dispersed in the ingredients 0.05~
A material for automobile exterior parts, characterized by comprising 30 parts by weight.
JP5006289A 1989-03-03 1989-03-03 Material for automobile external parts Pending JPH02229854A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5006289A JPH02229854A (en) 1989-03-03 1989-03-03 Material for automobile external parts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5006289A JPH02229854A (en) 1989-03-03 1989-03-03 Material for automobile external parts

Publications (1)

Publication Number Publication Date
JPH02229854A true JPH02229854A (en) 1990-09-12

Family

ID=12848514

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5006289A Pending JPH02229854A (en) 1989-03-03 1989-03-03 Material for automobile external parts

Country Status (1)

Country Link
JP (1) JPH02229854A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6274957A (en) * 1985-09-30 1987-04-06 Toyota Central Res & Dev Lab Inc Composite material and production thereof
JPS6411157A (en) * 1987-07-03 1989-01-13 Toyota Central Res & Dev Polyamide composite material

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6274957A (en) * 1985-09-30 1987-04-06 Toyota Central Res & Dev Lab Inc Composite material and production thereof
JPS6411157A (en) * 1987-07-03 1989-01-13 Toyota Central Res & Dev Polyamide composite material

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