JPH09111067A - Polyolefin-based elastomer composition - Google Patents
Polyolefin-based elastomer compositionInfo
- Publication number
- JPH09111067A JPH09111067A JP27440395A JP27440395A JPH09111067A JP H09111067 A JPH09111067 A JP H09111067A JP 27440395 A JP27440395 A JP 27440395A JP 27440395 A JP27440395 A JP 27440395A JP H09111067 A JPH09111067 A JP H09111067A
- Authority
- JP
- Japan
- Prior art keywords
- epr
- phase component
- eor
- polyolefin
- crystalline
- 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.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ポリオレフィン系
エラストマー組成物（以下「ＴＰＯ組成物」と略する）
に関する。特に、サイドモール等の温度差の大きな雰囲
気で使用されて、寸法安定性が要求され、かつ、成形性
・塗装性も要求されるような長尺射出成形品に好適な発
明である。ここでは、サイドモールを例に採り説明する
が、これに限られるものではない。TECHNICAL FIELD The present invention relates to a polyolefin elastomer composition (hereinafter abbreviated as “TPO composition”).
About. In particular, the present invention is suitable for a long injection-molded product which is used in an atmosphere with a large temperature difference such as a side molding and is required to have dimensional stability as well as moldability and paintability. Here, the side mall is described as an example, but the present invention is not limited to this.
【０００２】[0002]
【用語の説明】本明細書で使用する主たる用語（略語）
を、下記の通り説明する。[Explanation of Terms] Main terms (abbreviations) used in this specification
Will be described as follows.
【０００３】ＴＰＯ組成物…ポリオレフィン系エラスト
マー組成物。TPO composition ... A polyolefin elastomer composition.
【０００４】Ｑ値（Ｍw ／Ｍn ）…ゲルパーエミーショ
ンクロマトグラフィー（ＧＰＣ）法で測定した重量平均
分子量（Ｍw ）と数平均分子量（Ｍn ）の比。Q value (M w / M n ) ... Ratio of weight average molecular weight (M w ) and number average molecular weight (M n ) measured by gel permeation chromatography (GPC) method.
【０００５】ＭＦＲ…前記結晶性ＰＰの場合は２３０
℃、前記ＥＯＲの場合は１９０℃で２．１６ｋｇｆの力
を受けたときに、直径２．１mm、長さ８mmのオリフィス
から１０分間に押出される量のｇ数。MFR: 230 in the case of the crystalline PP
C., in the case of the above EOR, when the force of 2.16 kgf is applied at 190 ° C., the number of grams extruded from an orifice having a diameter of 2.1 mm and a length of 8 mm in 10 minutes.
【０００６】ＰＥ…ポリエチレン。PE ... polyethylene.
【０００７】ＰＰ…ポリプロピレン。PP: polypropylene.
【０００８】[0008]
【従来の技術及び発明が解決しようとする課題】上記の
ようなサイドモールの材料として、加硫工程が不要で再
利用が容易で、しかも、耐候性に優れたＴＰＯ組成物
（ポリオレフィン系熱可塑性エラストマー材料）が多用
されてきている。そして、それらのＴＰＯ組成物からな
るサイドモールは、耐擦傷性に劣るため、一般的に、塗
装処理を行って対処している。2. Description of the Related Art As a material for the side molding as described above, a TPO composition (polyolefin-based thermoplastic resin) that does not require a vulcanization step, is easy to reuse, and has excellent weather resistance is used. Elastomer materials) have been used frequently. Since the side moldings made of these TPO compositions have poor scratch resistance, they are generally treated by coating.
【０００９】また、一般的に、サイドモール（射出成形
品）は、離型性・成形品外観等を確保するために、結晶
性ＰＰ等の硬質相成分が７０wt％前後と多いＴＰＯ組成
物を使用していた（特開平５−９８０９７・９８０９８
・９８０９９号等参照）。このため、一般に剛性が高く
（曲げ弾性率：１２００ＭＰａ以上、曲げ強度：２０Ｍ
Ｐａ以上）、昨今の流行である流線型自動車の曲面ボデ
ィに対応できない、という問題点が発生しつつある。即
ち、サイドモールの曲面への追従性が悪く、または、両
面テープの接着面積を大きくとる必要があった。In general, the side molding (injection molded product) is made of a TPO composition containing a large amount of hard phase component such as crystalline PP at around 70 wt% in order to secure mold releasability and appearance of the molded product. Used (Japanese Patent Application Laid-Open No. 5-98097 / 98098)
・ See 98099 etc.). Therefore, the rigidity is generally high (bending elastic modulus: 1200 MPa or more, bending strength: 20 M).
(Pa or more), the problem that the curved body of a streamlined automobile, which is the current trend, cannot be dealt with is emerging. That is, the followability of the side molding to the curved surface is poor, or it is necessary to increase the adhesive area of the double-sided tape.
【００１０】このため、エチレンプロピレンゴム等の軟
質相成分の比率を増大した剛性の比較的小さいＴＰＯ組
成物を使用することも考えられるが、曲げ弾性率を１０
００ＭＰａ以下にしようとした場合、離型性・成形品外
観等に問題が発生し易かった。即ち、曲げ弾性率と離型
性・成形品外観・塗膜密着性との特性バランスのとれた
長尺射出成形品を成形することは困難であった。Therefore, it is conceivable to use a TPO composition having a relatively small rigidity in which the proportion of the soft phase component such as ethylene propylene rubber is increased, but the flexural modulus is 10
If the pressure is set to 00 MPa or less, problems such as releasability and appearance of the molded product are likely to occur. That is, it has been difficult to mold a long injection-molded product in which the properties of flexural modulus, releasability, appearance of molded product, and adhesion of coating film are well balanced.
【００１１】本発明は、上記にかんがみて、曲げ弾性率
と離型性・成形品外観・塗膜密着性との特性バランスの
とれた長尺射出成形品に成形可能なＴＰＯ組成物を提供
することを目的とする。In view of the above, the present invention provides a TPO composition which can be molded into a long-length injection-molded product in which the properties of flexural modulus, releasability, appearance of molded product, and adhesion of coating film are well balanced. The purpose is to
【００１２】本発明の他の目的は、上記目的に加えて、
さらに、離型性・成形品外観の向上が図れるとともに、
線膨張率の低下が図れるＴＰＯ組成物を提供することを
目的とする。Another object of the present invention is, in addition to the above objects,
Furthermore, while improving the releasability and appearance of the molded product,
It is an object of the present invention to provide a TPO composition capable of reducing the coefficient of linear expansion.
【００１３】本発明のさらなる他の目的は、曲げ弾性率
と離型性・成形品外観・塗膜密着性との特性バランスの
とれた長尺射出成形品を提供することを目的とする。Still another object of the present invention is to provide a long injection-molded article in which the characteristics of flexural modulus, releasability, appearance of molded article, and adhesion of coating film are well balanced.
【００１４】[0014]
(1) 請求項１・２に係る本発明のＴＰＯ組成物は、上記
第一の目的を基本的に下記構成により達成するものであ
る。(1) The TPO composition of the present invention according to claims 1 and 2 basically achieves the above first object by the following constitution.
【００１５】曲げ弾性率１０００ＭＰａ以下の塗装長尺
射出成形品を成形するために使用されるポリオレフィン
系エラストマー組成物であって、実質的なベースポリマ
ーが、結晶性ＰＰを硬質相成分とし、ＥＰＲ及びＥＯＲ
を軟質相成分とするポリマーアロイであり、前記硬質相
成分と軟質相成分とのブレンド比率が、前者／後者（重
量比）＝４８／５２〜６７／３３であるとともに、前記
ＥＰＲとＥＯＲとのブレンド比率が、前者／後者（重量
比）＝１／９〜９／１であり、前記結晶性ＰＰの特性
が、Ｑ値（Ｍw ／Ｍn ）≧１０、ＭＦＲ：５０〜１２０
であり、前記ＥＰＲのムーニー粘度（ＭＬ1+4 １００
℃）３〜３５であり、前記ＥＯＲの比重０．８９２以下
である、ことを特徴とする。A polyolefin-based elastomer composition used for molding a coated long injection-molded article having a flexural modulus of 1000 MPa or less, wherein a substantial base polymer contains crystalline PP as a hard phase component, and EPR and EOR
Is a polymer alloy having a soft phase component, the blend ratio of the hard phase component and the soft phase component is the former / latter (weight ratio) = 48/52 to 67/33, and the EPR and EOR The blend ratio is the former / the latter (weight ratio) = 1/9 to 9/1, and the characteristics of the crystalline PP have a Q value (M w / M n ) ≧ 10 and MFR: 50 to 120.
And the Mooney viscosity of the EPR (ML 1 + 4 100
C.) 3 to 35, and the specific gravity of the EOR is 0.892 or less.
【００１６】(2) 請求項３・４に係る本発明のＴＰＯ組
成物は、上記第二の目的を基本的に下記構成により達成
するものである。(2) The TPO composition of the present invention according to claims 3 and 4 basically achieves the above second object by the following constitution.
【００１７】請求項１または２において、タルクが５〜
２０ｐｈｒ配合されてなることを特徴とする。In claim 1 or 2, talc is 5 to
It is characterized by containing 20 phr.
【００１８】(3) 本発明の長尺射出成形品は、上記課題
を下記構成により解決するものである。(3) The long injection-molded article of the present invention solves the above problems by the following constitution.
【００１９】上記(1) 又は(2) のＴＰＯ組成物から射出
成形されてなる成形品であって、該成形品の意匠面が塗
装面とされていることを特徴とする。A molded article obtained by injection molding from the TPO composition according to (1) or (2), characterized in that the design surface of the molded article is a coated surface.
【００２０】[0020]
【発明の実施の形態】以下、本発明を実施例に基づいて
詳細に説明をする。なお、配合単位は、特に断らない限
り、重量単位である。また、括弧内の比較例及び実施例
は、後述の試験例におけるものである。DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on embodiments. The blending units are weight units unless otherwise specified. In addition, Comparative Examples and Examples in parentheses are in Test Examples described later.
【００２１】(1) 本発明の組成物は、曲げ弾性率１００
０ＭＰａ以下の塗装長尺射出成形品を成形するために使
用されることを前提とする。(1) The composition of the present invention has a flexural modulus of 100.
It is premised on being used for molding a coated long injection-molded article of 0 MPa or less.
【００２２】曲げ弾性率１０００ＭＰａを越えると、流
線型自動車の曲面ボディに対応でき難い。即ち、サイド
モールの曲面への追従性が悪く、または、両面テープの
接着面積を大きくとる必要があり、望ましくない。When the bending elastic modulus exceeds 1000 MPa, it is difficult to cope with the curved body of a streamline type automobile. That is, it is not desirable because the followability of the side molding to the curved surface is poor, or the adhesive area of the double-sided tape needs to be large.
【００２３】(2) このオレフィン系エラストマー組成物
は、第一に、実質的なベースポリマーが、結晶性ＰＰ
（結晶性ポリプロピレン）を硬質相成分とし、ＥＰＲ
（非晶性エチレンプロピレン系共重合体）及びＥＯＲ
（非晶性エチレン−αオレフィン（Ｃ４〜Ｃ１２）系共
重合体）を軟質相成分とするポリマーアロイであること
を前提とする。(2) In this olefin elastomer composition, firstly, the substantial base polymer is crystalline PP.
(Crystalline polypropylene) as hard phase component, EPR
(Amorphous ethylene propylene copolymer) and EOR
It is premised that the polymer alloy contains (amorphous ethylene-α olefin (C4 to C12) -based copolymer) as a soft phase component.
【００２４】そして、各成分の組成は、硬質相成分と軟
質相成分とのブレンド比率を、前者／後者（重量比）＝
４８／５２〜６７／３３（望ましくは、５３／４７〜６
２／３８）とするとともに、ＥＰＲとＥＯＲとのブレン
ド比率を、前者／後者（重量比）＝１／９〜９／１（望
ましくは、３／７〜７／３）とする。The composition of each component is determined by the blend ratio of the hard phase component and the soft phase component, the former / the latter (weight ratio) =
48 / 52-67 / 33 (preferably 53 / 47-6
2/38), and the blend ratio of EPR and EOR is the former / the latter (weight ratio) = 1/9 to 9/1 (desirably 3/7 to 7/3).
【００２５】ここで、硬質相成分が過少、即ち軟質相成
分が過多であると、離型性に問題が発生し易く（比較例
７参照）、硬質相成分が過多、即ち軟質相成分が過少で
あると、曲げ弾性率１０００ＭＰａ以下のものを得難い
とともに、線膨張係数も増大して望ましくない（比較例
８参照）。Here, if the hard phase component is too small, that is, if the soft phase component is too large, a problem of releasability tends to occur (see Comparative Example 7), and the hard phase component is too large, that is, the soft phase component is too small. In that case, it is difficult to obtain a flexural modulus of 1000 MPa or less, and the linear expansion coefficient increases, which is not desirable (see Comparative Example 8).
【００２６】また、ＥＰＲをブレンドしないと、即ちＥ
ＯＲのみでは、塗膜密着性が得難く（比較例２参照）、
Ｅ０Ｒをブレンドしないと、即ちＥＰＲのみでは、離型
性が確保できがたい（比較例１参照）。If EPR is not blended, that is, E
With only OR, it is difficult to obtain coating film adhesion (see Comparative Example 2).
If EOR is not blended, that is, it is difficult to secure releasability only with EPR (see Comparative Example 1).
【００２７】(3) 上記結晶性ＰＰの特性は、Ｑ値（Ｍw
／Ｍn ）≧１０（望ましくは１２）、ＭＦＲ：５０〜１
２０（望ましくは、５５〜１００）とする。(3) The characteristic of the crystalline PP is that the Q value (M w
/ M n ) ≧ 10 (preferably 12), MFR: 50-1
20 (preferably 55 to 100).
【００２８】Ｑ値が小さ過ぎて、即ち、分子量分布が狭
過ぎて、かつ、ＭＦＲが小さ過ぎると、フローマークが
顕著に発生し易くなる、即ち、成形品外観に問題が発生
し易くなる（比較例６参照）。If the Q value is too small, that is, the molecular weight distribution is too narrow, and the MFR is too small, flow marks are likely to occur remarkably, that is, a problem is likely to occur in the appearance of the molded product ( See Comparative Example 6).
【００２９】なお、結晶性ＰＰは、プロピレンホモポリ
マーでもよいが、少量（通常２〜１２％、望ましくは、
３〜８％）のエチレンとの共重合体が、ＥＰＲとの相溶
性が増大して望ましい。The crystalline PP may be a propylene homopolymer, but a small amount (usually 2 to 12%, preferably,
A copolymer with 3 to 8% of ethylene is desirable because the compatibility with EPR is increased.
【００３０】(4) 上記ＥＰＲは、ムーニー粘度（ＭＬ
1+4 １００℃）３〜３５（望ましくは５〜３０）のもの
を使用する。ムーニー粘度が高すぎると、流動性に悪影
響がでて、フローマークが顕著に発生し易くなる、即
ち、成形品外観に問題が発生し易くなる（比較例３参
照）。(4) The EPR is the Mooney viscosity (ML
1 + 4 100 ° C.) 3 to 35 (preferably 5 to 30) is used. If the Mooney viscosity is too high, the fluidity is adversely affected, and flow marks are likely to occur remarkably, that is, a problem is likely to occur in the appearance of the molded product (see Comparative Example 3).
【００３１】また、ムーニー粘度３以下のものは、金型
からの離型性が悪く、塗膜密着性も低下する。If the Mooney viscosity is 3 or less, the mold releasability from the mold is poor and the coating film adhesion is lowered.
【００３２】ここで、ＥＰＲとしては、エチレンプロピ
レン二元共重合体（ＥＰＭ）を通常使用するが、ＥＰＲ
として、部分・全部架橋タイプを使用する場合は、微量
の非共役ジエン（エチリデンノルボルネン、ジシクロペ
ンタジエン等）を第三成分として共重合させたエチレン
プロピレン非共役ジエン三元共重合体（ＥＰＤＭ）を使
用する。Here, as the EPR, an ethylene-propylene binary copolymer (EPM) is usually used.
As for the case where a partially / all cross-linked type is used, an ethylene propylene non-conjugated diene terpolymer (EPDM) obtained by copolymerizing a trace amount of a non-conjugated diene (ethylidene norbornene, dicyclopentadiene, etc.) as a third component is used. use.
【００３３】また、ＥＰＲのプロピレン含量は特に限定
されないが、通常、１８〜４５％（望ましくは、２０〜
３０％）のものを使用する。The propylene content of EPR is not particularly limited, but is usually 18 to 45% (desirably 20 to 20).
30%) is used.
【００３４】(5) 上記ＥＯＲは、比重０．８９２以下
（望ましくは、０．８７０〜０．８９０、さらに望まし
くは０．８８０〜０．８９０）のものを使用する。比重
が高すぎると、塗膜密着性が得難い。理由は断定できな
いが、結晶性が高くなり過ぎて、塗膜密着性に悪影響を
与えると推定される。(5) The EOR has a specific gravity of 0.892 or less (preferably 0.870 to 0.890, more preferably 0.880 to 0.890). If the specific gravity is too high, it is difficult to obtain coating film adhesion. Although the reason cannot be determined, it is presumed that the crystallinity becomes too high and the coating film adhesion is adversely affected.
【００３５】α−オレフィンとしては、Ｃ４〜Ｃ１２
の、ブテン−１、ペンテン−１、ヘキセン−１、ヘプテ
ン−１、オクテン−１、ノネン−１、デセン−１、４−
メチルペンテン−１等を使用可能である。ＥＯＲとし
て、部分・全部架橋タイプを使用する場合は、ＥＰＲの
場合と同様、微量の非共役ジエン（エチリデンノルボル
ネン、ジシクロペンタジエン等）を第三成分として共重
合させても良い。The α-olefin includes C4 to C12.
Butene-1, pentene-1, hexene-1, heptene-1, octene-1, nonene-1, decene-1, 4-
Methylpentene-1 or the like can be used. When a partially or completely crosslinked type is used as the EOR, a small amount of non-conjugated diene (ethylidene norbornene, dicyclopentadiene, etc.) may be copolymerized as the third component as in the case of EPR.
【００３６】なお、ＥＯＲ中のαオレフィン含量は、特
に限定されないが１０〜２２％（望ましくは１２〜２０
％）とする。αオレフィン含量が過少では、ＥＯＲの非
晶性が低くなって（結晶性が高くなって）、線膨張係数
が高くなる傾向にあり、逆に、過多では、ＥＯＲの非晶
性が高くなり過ぎて（結晶性が低くなって）、離型性、
表面外観に問題が発生し易くなる。The α-olefin content in EOR is not particularly limited, but is 10 to 22% (desirably 12 to 20).
%). When the α-olefin content is too low, the amorphous property of EOR tends to be low (the crystallinity is high) and the linear expansion coefficient tends to be high. On the contrary, when it is too high, the amorphous property of EOR becomes too high. (Reduced crystallinity), releasability,
Problems in surface appearance are more likely to occur.
【００３７】上記組成物には、線膨張係数を低下させる
とともに、成形性を向上させるために、タルクを５〜２
０ｐｈｒ（望ましくは、８〜１５ｐｈｒ）配合すること
が望ましい。The above composition contains talc in an amount of 5 to 2 in order to reduce the linear expansion coefficient and improve the formability.
It is desirable to add 0 phr (desirably 8 to 15 phr).
【００３８】タルクが５ｐｈｒ未満では、上記効果が得
難く、タルクが２０ｐｈｒを越えると、曲げ弾性率１０
００ＭＰａ以下のものを得難い。If the talc is less than 5 phr, the above effect is difficult to obtain, and if the talc exceeds 20 phr, the flexural modulus is 10
It is difficult to obtain a pressure below 00 MPa.
【００３９】(2) 上記ＴＰＯ組成物を使用して、サイド
モール等の長尺射出成形品を射出成形する。(2) Using the above TPO composition, a long injection-molded article such as a side molding is injection-molded.
【００４０】このときの射出成形条件は、シリンダ温
度：１９０〜２４０℃ 、金型温度：２０〜５０℃、射
出圧：４０〜１００ＭＰａとする。The injection molding conditions at this time are: cylinder temperature: 190-240 ° C., mold temperature: 20-50 ° C., injection pressure: 40-100 MPa.
【００４１】そして、該射出成形品の意匠面は、塗装面
とする。使用塗料は、例えば、耐候性・耐擦傷性に優れ
たウレタン系塗料を使用する。塗膜厚は、通常、１５〜
８０μｍとする。通常、プライマー塗布後、仕上げ塗膜
を形成する。The design surface of the injection-molded product is the painted surface. The paint used is, for example, a urethane-based paint having excellent weather resistance and scratch resistance. The coating thickness is usually 15 to 15.
80 μm. Usually, after applying the primer, a finish coating film is formed.
【００４２】特に、サイドモールでは、ドアの衝突等に
より塗膜が剥がれないために、４０〜６０μｍの塗膜厚
にすることが望ましい。Particularly, in the side molding, the coating film is not peeled off due to the collision of the door or the like, so that the coating film thickness is preferably 40 to 60 μm.
【００４３】[0043]
【発明の効果】本発明のＴＰＯ組成物は、上記の如く、
特定ＰＰと特定ＥＰＲ及び特定ＥＯＲを所定比でブレン
ドすることにより、曲げ弾性率と離型性・成形品外観・
塗膜密着性との特性バランスのとれた長尺射出成形品が
成形可能となる。The TPO composition of the present invention, as described above,
By blending a specific PP, a specific EPR, and a specific EOR at a predetermined ratio, the flexural modulus and releasability, appearance of the molded product
It becomes possible to mold long injection-molded products with a good balance of properties with coating film adhesion.
【００４４】また、ＴＰＯ組成物に、タルクを添加した
場合は、タルクの滑剤的作用により、離型性・成形品外
観の向上が図れるとともに、線膨張率の低下が図れる。When talc is added to the TPO composition, the talc acts as a lubricant to improve the releasability and appearance of the molded product, and to reduce the linear expansion coefficient.
【００４５】[0045]
【試験例】 (1) 以下、本発明の効果を確認するために、比較例を共
に行った実施例について説明をする。[Test Example] (1) Hereinafter, in order to confirm the effect of the present invention, an example in which a comparative example was carried out will be described.
【００４６】表１・２に示す処方の各ＴＰＯ組成物を、
射出成形機を用いて、下記成形条件によりテスト用素材
（５０mm×１２００mm×２．５mmｔ）を射出成形した。Each TPO composition having the formulation shown in Tables 1 and 2 was
A test material (50 mm × 1200 mm × 2.5 mmt) was injection molded under the following molding conditions using an injection molding machine.
【００４７】成形条件Ａ…シリンダ温度：２２０℃、金
型温度：３０℃、射出圧：５０MPa 成形条件Ｂ…シリンダ温度：２２０℃、金型温度：３０
℃、射出圧：７０MPa 片面３５μｍエンボス附形時付与 なお、各成分の特性は、それぞれ表３〜５に示すものを
使用した。Molding condition A: Cylinder temperature: 220 ° C., mold temperature: 30 ° C., injection pressure: 50 MPa Molding condition B: Cylinder temperature: 220 ° C., mold temperature: 30
C, injection pressure: 70 MPa, applied on one side with 35 μm embossed type The characteristics of each component used are those shown in Tables 3 to 5, respectively.
【００４８】(2) 上記テスト用素材を使用して、下記項
目・仕様の試験を行った。(2) Using the above test materials, tests of the following items and specifications were conducted.
【００４９】曲げ弾性率…成形条件Ａの試験片（幅：
１２．６mm×厚さ：６．４mm×スパン長さ：１００mm）
を、曲げ試験速度：２mm／分、試験温度：２３℃の条件
で、ＡＳＴＭ−Ｄ７９０に基づいて行った。Flexural modulus ... Test piece under molding condition A (width:
12.6 mm x thickness: 6.4 mm x span length: 100 mm)
Bending test speed: 2 mm / min, test temperature: 23 ° C., based on ASTM-D790.
【００５０】線膨張係数…JIS １号ダンベルの中央部
から、３mm×３mm×１０mmの成形条件Ａの試験片をダン
ベル片の長さ方向と平行に切り取って、−１０〜８０℃
の温度範囲における寸法変化を、熱応力歪測定器ＳＳＣ
５０００（セイコー電子(株) 製）を用いて測定した。Linear expansion coefficient: A test piece of 3 mm x 3 mm x 10 mm under the molding condition A was cut in parallel with the length direction of the dumbbell piece from the center of JIS No. 1 dumbbell, and the temperature was -10 to 80 ° C.
Dimensional change in the temperature range of SSC
It was measured using 5000 (manufactured by Seiko Denshi KK).
【００５１】成形性（離型性）…成形条件Ｂで、サイ
ドモール（厚さ：２．８mm、幅：６５mm、長さ：１２０
０mm、意匠面：鏡面磨き）を、竪型射出成形機で成形
後、キャビティ内の成形品をエジェクタピンで押上げる
際の離型性を、下記基準で判定した。Moldability (Releasability) ... Under molding conditions B, side moldings (thickness: 2.8 mm, width: 65 mm, length: 120)
(0 mm, design surface: mirror-polished) was molded by a vertical injection molding machine, and the mold releasability when the molded product in the cavity was pushed up by the ejector pin was judged according to the following criteria.
【００５２】○：成形品が、抵抗なく離型し変形しない
もの。◯: A molded product is released without resistance and does not deform.
【００５３】Χ：成形品が、キャビティへの張り付き等
により離型抵抗が大きく、変形するもの。Χ: A molded product that has a large mold release resistance and is deformed due to sticking to a cavity or the like.
【００５４】成形品外観…上記で得たサイドモールの
外観を、異常「フローマークその他の表面凹凸」の有無
について、下記基準で、目視判定した。Appearance of molded product: The appearance of the side molding obtained above was visually judged for the presence of abnormal "flow marks and other surface irregularities" according to the following criteria.
【００５５】○：異常認められず、Χ：異常認めらる。◯: No abnormality was observed, Χ: Abnormality was observed.
【００５６】塗膜密着性…上記で得たサイドモールを
イソプロピルアルコール（ＩＰＡ）で洗浄後、塩素化Ｐ
Ｐ系のプライマを塗布後、アクリルウレタン系塗料で仕
上げ塗装し、焼き付け乾燥（１００℃×３０分）を行っ
た。Coating adhesion ... After cleaning the side molding obtained above with isopropyl alcohol (IPA), chlorinated P
After the P-based primer was applied, it was finish-coated with an acrylic urethane-based paint and baked and dried (100 ° C. × 30 minutes).
【００５７】そして、初期品及び温水試験後（４０℃×
１０日）の各試験片について、それぞれゴバン目試験
（JIS K 5400）を行うとともに、温水試験後の試験片に
ついては、ブリスタ等の有無を目視判定した。Then, after the initial product and the hot water test (40 ° C. ×
For each test piece of 10 days), a goose eye test (JIS K 5400) was performed, and the test piece after the hot water test was visually determined for the presence or absence of a blister or the like.
【００５８】ゴバン目試験では、１００マスのゴバン目
のうち、剥がれたマスの数を数える。即ち、６０／１０
０は１００マスのうち、６０マスが剥がれたことを示
し、０／１００のみを合格とする。In the goose-eye test, the number of peeled-off squares is counted out of 100 squares. That is, 60/10
0 indicates that 60 of the 100 squares were peeled off, and only 0/100 was passed.
【００５９】(3) 上記試験結果を表１・２に示す。本発
明の要件を満たす各実施例からなる射出成形品は、曲げ
弾性率・線膨張率と成形品外観・塗膜密着性の各バラン
ス、特に、曲げ弾性率と耐擦傷性とのバランスがとれた
物性を示すことが分かる。これに対して各比較例の組成
物からなる成形品は、これらの特性のバランスがとれて
いないことが分かる。(3) The test results are shown in Tables 1 and 2. The injection-molded article comprising each of the examples satisfying the requirements of the present invention has a good balance of bending elastic modulus / linear expansion coefficient and appearance of the molded article / coating film adhesion, and particularly good balance of bending elastic modulus and scratch resistance. It can be seen that it exhibits excellent physical properties. On the other hand, it can be seen that the molded articles made of the compositions of the respective comparative examples do not balance these characteristics.
【００６０】[0060]
【表１】 [Table 1]
【００６１】[0061]
【表２】 [Table 2]
【００６２】[0062]
【表３】 [Table 3]
【００６３】[0063]
【表４】 [Table 4]
【００６４】[0064]
【表５】 [Table 5]
Claims (5)
尺射出成形品を成形するために使用されるポリオレフィ
ン系エラストマー組成物であって、 実質的なベースポリマーが、結晶性ポリプロピレン（以
下「結晶性ＰＰ」と称す。）を硬質相成分とし、非晶性
エチレンプロピレン系共重合体（以下「ＥＰＲ」と称
す。）及び非晶性エチレン−αオレフィン（Ｃ４〜Ｃ１
２）系共重合体（以下「ＥＯＲ」と称す。）を軟質相成
分とするポリマーアロイであり、 前記硬質相成分と軟質相成分とのブレンド比率が、前者
／後者（重量比）＝４８／５２〜６７／３３であるとと
もに、前記ＥＰＲとＥＯＲとのブレンド比率が、前者／
後者（重量比）＝１／９〜９／１であり、 前記結晶性ＰＰの特性が、Ｑ値（Ｍw ／Ｍn ）≧１０、
ＭＦＲ：５０〜１２０であり、 前記ＥＰＲのムーニー粘度（ＭＬ1+4 １００℃）３〜３
５であり、 前記ＥＯＲの比重０．８９２以下である、 構成のポリオレフィン系エラストマー組成物。1. A polyolefin-based elastomer composition used for molding a coated long injection-molded article having a flexural modulus of 1000 MPa or less, wherein the substantial base polymer is crystalline polypropylene (hereinafter, "crystalline PP"). Is used as a hard phase component, and an amorphous ethylene propylene copolymer (hereinafter referred to as “EPR”) and an amorphous ethylene-α olefin (C4 to C1) are used.
2) A polymer alloy having a soft phase component of a copolymer (hereinafter referred to as “EOR”), wherein the blend ratio of the hard phase component and the soft phase component is the former / the latter (weight ratio) = 48 / 52-67 / 33, and the blend ratio of the EPR and EOR is
The latter (weight ratio) = 1/9 to 9/1, and the characteristic of the crystalline PP is Q value (M w / M n ) ≧ 10,
MFR: 50-120, Mooney viscosity (ML 1 + 4 100 ° C.) of EPR 3-3
5, and the polyolefin specific gravity is 0.892 or less.
びＥＯＲを軟質相成分とするポリマーアロイを実質的な
ベースポリマーとする組成物であって、 前記硬質相成分と軟質相成分とのブレンド比率が、前者
／後者（重量比）＝４８／５２〜６７／３３であるとと
もに、前記ＥＰＲとＥＯＲとのブレンド比率が、前者／
後者（重量比）＝１／９〜９／１であり、 前記結晶性ＰＰの特性が、Ｑ値（Ｍw ／Ｍn ）≧１０、
ＭＦＲ：５０〜１２０、エチレン含量：２〜１２wt％で
あり、 前記ＥＰＲの特性が、プロピレン含量：２０〜４５wt
％、ムーニー粘度（ＭＬ 1+4 １００℃）：３〜３５であ
り、 前記ＥＯＲの特性が、比重：０．８７０〜０．８９２、
αオレフィン含量：１０〜２２wt％、ＭＦＲ（１９０
℃、２．１６ｋｇｆ／cm2 ）である、 構成のポリオレフィン系エラストマー組成物。2. Crystalline PP is used as a hard phase component, and EPR and
And a polymer alloy containing EOR as a soft phase component
A composition having a base polymer, wherein the blend ratio of the hard phase component and the soft phase component is the former
/ Late (weight ratio) = 48/52 to 67/33
The blend ratio of the EPR and EOR is
The latter (weight ratio) = 1/9 to 9/1, and the characteristic of the crystalline PP is Q value (Mw / Mn ) ≧ 10,
MFR: 50-120, ethylene content: 2-12 wt%
And the characteristics of the EPR are as follows: propylene content: 20-45 wt
%, Mooney viscosity (ML 1 + 4 100 ° C.): 3 to 35
According to the characteristics of the EOR, specific gravity: 0.870 to 0.892,
α-olefin content: 10 to 22 wt%, MFR (190
℃, 2.16kgf / cmTwo ) Is a polyolefin-based elastomer composition.
ｈｒ配合されてなる構成のポリオレフィン系エラストマ
ー組成物。3. The talc according to claim 1, wherein the talc is 5 to 20 p.
A polyolefin-based elastomer composition having a composition of hr.
ｈｒ配合されてなる構成のポリオレフィン系エラストマ
ー組成物。4. The talc according to claim 2, wherein the talc is 5 to 20 p.
A polyolefin-based elastomer composition having a composition of hr.
レフィン系エラストマー組成物から射出成形されてなる
成形品であって、該成形品の少なくとも意匠面が塗装面
とされていることを特徴とする長尺射出成形品。5. A molded article obtained by injection molding from the polyolefin-based elastomer composition according to any one of claims 1 to 4, wherein at least the design surface of the molded article is a painted surface. Long injection molded product.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27440395A JP3304719B2 (en) | 1995-10-23 | 1995-10-23 | Polyolefin elastomer composition |
| DE19629050A DE19629050B4 (en) | 1995-07-21 | 1996-07-18 | Polyolefin elastomer composition |
| US08/686,050 US5854328A (en) | 1995-07-21 | 1996-07-22 | Polyolefin elastomer composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27440395A JP3304719B2 (en) | 1995-10-23 | 1995-10-23 | Polyolefin elastomer composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09111067A true JPH09111067A (en) | 1997-04-28 |
| JP3304719B2 JP3304719B2 (en) | 2002-07-22 |
Family
ID=17541190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27440395A Expired - Fee Related JP3304719B2 (en) | 1995-07-21 | 1995-10-23 | Polyolefin elastomer composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3304719B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR980009364A (en) * | 1996-07-16 | 1998-04-30 | 조규향 | Thermoplastic polyolefin resin composition having high rigidity and high rigidity |
| JP2006176545A (en) * | 2004-12-20 | 2006-07-06 | Nishikawa Rubber Co Ltd | Olefin thermoplastic elastomer composition |
| JP2013227472A (en) * | 2011-07-12 | 2013-11-07 | Mitsubishi Chemicals Corp | Resin composition and release film |
-
1995
- 1995-10-23 JP JP27440395A patent/JP3304719B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR980009364A (en) * | 1996-07-16 | 1998-04-30 | 조규향 | Thermoplastic polyolefin resin composition having high rigidity and high rigidity |
| JP2006176545A (en) * | 2004-12-20 | 2006-07-06 | Nishikawa Rubber Co Ltd | Olefin thermoplastic elastomer composition |
| JP2013227472A (en) * | 2011-07-12 | 2013-11-07 | Mitsubishi Chemicals Corp | Resin composition and release film |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3304719B2 (en) | 2002-07-22 |
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