JPH02182739A - Resin outer plate for automobile - Google Patents
Resin outer plate for automobileInfo
- Publication number
- JPH02182739A JPH02182739A JP195589A JP195589A JPH02182739A JP H02182739 A JPH02182739 A JP H02182739A JP 195589 A JP195589 A JP 195589A JP 195589 A JP195589 A JP 195589A JP H02182739 A JPH02182739 A JP H02182739A
- Authority
- JP
- Japan
- Prior art keywords
- weight
- parts
- pts
- elastomer
- automobile
- 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
- 239000011347 resin Substances 0.000 title claims abstract description 12
- 229920005989 resin Polymers 0.000 title claims abstract description 12
- 229920001971 elastomer Polymers 0.000 claims abstract description 20
- 239000000806 elastomer Substances 0.000 claims abstract description 15
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims abstract description 14
- 229920000098 polyolefin Polymers 0.000 claims abstract description 9
- 229920003051 synthetic elastomer Polymers 0.000 claims abstract description 8
- 239000005061 synthetic rubber Substances 0.000 claims abstract description 8
- 239000000454 talc Substances 0.000 claims abstract description 7
- 229910052623 talc Inorganic materials 0.000 claims abstract description 7
- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000011342 resin composition Substances 0.000 claims abstract description 5
- -1 polypropylene Polymers 0.000 abstract description 5
- 239000005060 rubber Substances 0.000 abstract description 5
- 239000004743 Polypropylene Substances 0.000 abstract description 4
- 229920001155 polypropylene Polymers 0.000 abstract description 4
- 229920001577 copolymer Polymers 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 238000002156 mixing Methods 0.000 description 8
- 230000007423 decrease Effects 0.000 description 7
- 239000000945 filler Substances 0.000 description 4
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 3
- 229920006124 polyolefin elastomer Polymers 0.000 description 3
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 235000021189 garnishes Nutrition 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- YWAKXRMUMFPDSH-UHFFFAOYSA-N pentene Chemical compound CCCC=C YWAKXRMUMFPDSH-UHFFFAOYSA-N 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Body Structure For Vehicles (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は自動車用樹脂外板に関し、更に詳しくは、剛性
が高いと同時に、耐衝撃性、表面外観も良好で、しかも
温度変化に伴なう熱膨張・熱収縮などの寸法変化も小さ
い自動車用樹脂外板に関する。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a resin outer panel for automobiles, and more specifically, it has high rigidity, impact resistance, and good surface appearance, and is resistant to temperature changes. This invention relates to resin outer panels for automobiles that have small dimensional changes due to thermal expansion and contraction.
（従来の技術）
自動車の軽量化技術の一環として、外板を軽量な樹脂製
品で代替えする試みが重ねられている。(Prior Art) As part of automobile weight reduction technology, attempts have been made to replace outer panels with lightweight resin products.
この樹脂外板の構成樹脂としては、従来から、ポリプロ
ピレンのようなポリオレフィンとエチレンプロピレンゴ
ムのような合成ゴムを所定量配合して成るポリオレフィ
ン系エラストマーが広く用いられている。Conventionally, polyolefin elastomers made by blending predetermined amounts of polyolefins such as polypropylene and synthetic rubbers such as ethylene propylene rubber have been widely used as constituent resins for this resin outer plate.
（発明が解決しようとする課題）
しかしながら、ポリオレフィン系エラストマー単独で外
板を構成した場合には次のような問題が生じるので、そ
の改良が求められている。(Problems to be Solved by the Invention) However, when the outer panel is composed of a polyolefin elastomer alone, the following problems occur, and therefore improvements are required.
すなわち、このポリオレフィン系エラストマーの線膨張
係数が１３〜１４ ＸＩＯ”’／’Ｃと大きいので、温
度変化に伴なって生起する熱膨張・熱収縮に基づく外板
の寸法変化が大きく、バンパ、サイドガーニッシュ、サ
イドスポイラ、エアダムのような大型形状の外板には不
適切であるという問題である。In other words, since the coefficient of linear expansion of this polyolefin elastomer is as large as 13 to 14 The problem is that it is unsuitable for large-sized exterior panels such as garnishes, side spoilers, and air dams.
例えば、この材料を用いて長さが１０００＋ｍａの外板
を製造した場合、自動車に要求される一３０〜８０°Ｃ
の温度差の環境に対しては、全体として、常温の長さに
対し１４，３〜１５．４ ｔｎの寸法変化が生しること
になる。したがって、これを外板として実用に供するた
めには、この寸法変化量を考慮した設計を施さなければ
ならなくなる。For example, if an outer panel with a length of 1000+ ma is manufactured using this material, the temperature required for automobiles is -30 to 80°C.
In an environment with a temperature difference of , a dimensional change of 14.3 to 15.4 tn will occur as a whole compared to the length at room temperature. Therefore, in order to put this into practical use as an outer panel, it is necessary to design it in consideration of this amount of dimensional change.
当業者間にあっては、上記した温度差における寸法変化
量を１０００１００Ｏに対し８Ｍ以下にすることが要求
されている。この要求を満たすためには、外板の線膨張
係数が８ Ｘ Ｉ Ｏ−’／’Ｃ以下に管理されなけれ
ばならなくなる。Those skilled in the art require that the amount of dimensional change due to the above-mentioned temperature difference be 8M or less for 1000100O. In order to meet this requirement, the coefficient of linear expansion of the outer plate must be controlled to 8 X I O-'/'C or less.
このため、上記エラストマーに、所定量のガラス短繊維
などをフィラーとして配合して複合材にし、その寸法安
定性を高めるという試みがなされている。しかしながら
、そのような処置を施すと、耐衝撃性の低下を招くが、
そのこと以上に、外板の表面にフィラーのパターンが浮
き出てしまい、表面外観を著しく悪化させるという問題
が新たに発生する。For this reason, attempts have been made to mix a predetermined amount of short glass fibers or the like as a filler with the above elastomer to make a composite material to improve its dimensional stability. However, such treatment results in a decrease in impact resistance; however,
More than that, a new problem arises in that the filler pattern stands out on the surface of the outer panel, significantly deteriorating the surface appearance.
本発明は、上記したような問題を解消し、その線膨張係
数が８ Ｘ １０−’／”Ｃ以下であり、また、耐衝撃
性、表面外観も良好な自動車用の樹脂外板の促供を目的
とする。The present invention solves the above problems and provides a resin outer panel for automobiles that has a coefficient of linear expansion of 8 x 10-'/''C or less and has good impact resistance and surface appearance. With the goal.
（課題を解決するための手段〕
上記目的を達成するために、本発明においては、ポリオ
レフィン４０〜６０重量％、残部が剛性ゴムから成るエ
ラストマー１００重量部；タルク５〜１５重量部；およ
び、チタン酸カリウムウィスカ２〜１０重量部または硫
酸カルシウムウィスカ７〜１５重量部；を必須成分とす
る樹脂組成物から成ることを特徴とする自動車用樹脂外
板が捷供される。(Means for Solving the Problems) In order to achieve the above object, in the present invention, 100 parts by weight of an elastomer consisting of 40 to 60% by weight of polyolefin and the remainder being rigid rubber; 5 to 15 parts by weight of talc; and titanium A resin outer panel for an automobile is prepared by forming a resin composition containing as an essential component 2 to 10 parts by weight of potassium acid whiskers or 7 to 15 parts by weight of calcium sulfate whiskers.
本発明の外板を構成する樹脂組成物は上記した３成分を
必須とする。The resin composition constituting the outer panel of the present invention essentially contains the three components described above.
その第１は、ポリオレフィン４０〜６０重量％と合成ゴ
ム６０〜４０重量％とを混練して調製されるエラストマ
ーである。The first is an elastomer prepared by kneading 40-60% by weight of polyolefin and 60-40% by weight of synthetic rubber.
ここで、ポリオレフィンとしては、エチレン、プロピレ
ン、ブテン、イソプレン、ペンテンのような比較的間車
なオレフィンをそれぞれ単独で重合した重合体、または
適宜に選定した２種以上を共重合して得られる共重合体
が用いられる。これらのポリオレフィンはそれぞれ単独
で用いてもよく、また２＃１以上を適宜に組合せて用い
てもよい。Here, the polyolefin is a polymer obtained by polymerizing each relatively slow olefin such as ethylene, propylene, butene, isoprene, and pentene, or a copolymer obtained by copolymerizing two or more appropriately selected olefins. Polymers are used. Each of these polyolefins may be used alone, or 2#1 or more may be used in an appropriate combination.
と（に、変性ポリプロピレンを単独で用いることが好適
である。It is preferable to use modified polypropylene alone for and (.
合成ゴムとしては、エチレンプロピレンゴム、ブタジェ
ンスチレンゴム、アクリロニトリルゴム、ブチルゴムな
どをあげることができる。これらはそれぞれ単独で用い
てもよいが、２種以上を適宜に組合せて用いてもよい、
とくに、エチレンプロピレンゴムを用いることは好適で
ある。Examples of synthetic rubber include ethylene propylene rubber, butadiene styrene rubber, acrylonitrile rubber, butyl rubber, and the like. Each of these may be used alone, or two or more may be used in appropriate combination.
In particular, it is suitable to use ethylene propylene rubber.
このエラストマーにおいて、ポリオレフィンは４０〜６
０重量％（したがって、合成ゴムは６０〜４０重量％）
配合される。この配合量が４０重量％未満の場合は、得
られた外板の剛性低下を招き、逆に６０重量％を超える
場合は、合成ゴムの配合量が少なくなるため、外板の耐
衝撃性の低下を招くようになる。In this elastomer, the polyolefin is 40 to 6
0% by weight (therefore, synthetic rubber is 60-40% by weight)
It is blended. If this amount is less than 40% by weight, the stiffness of the obtained outer panel will decrease, and if it exceeds 60% by weight, the amount of synthetic rubber will be reduced, resulting in a decrease in the impact resistance of the outer panel. This will lead to a decline.
第２の必須成分はタルクである。これは樹脂組成物の剛
性向上に資する成分で、その配合量は、前記エラストマ
ー１００重量部に対し、５〜１５重量部に設定される。The second essential ingredient is talc. This is a component that contributes to improving the rigidity of the resin composition, and its blending amount is set at 5 to 15 parts by weight based on 100 parts by weight of the elastomer.
この配合量が５重量部未満の場合には、得られた外板の
剛性向上に資することがなく、また１５重量部を超える
と、耐衝撃性の低下および外観品質の低下を生じてしま
い目的達成が困難となるからである。If the blending amount is less than 5 parts by weight, it will not contribute to improving the rigidity of the obtained outer panel, and if it exceeds 15 parts by weight, it will cause a decrease in impact resistance and appearance quality, which may lead to a decrease in the intended purpose. This is because it will be difficult to achieve.
第３の必須成分は、チタン酸カリウムウィスカ、または
硫酸カルシウムウィスカである。The third essential ingredient is potassium titanate whisker or calcium sulfate whisker.
チタン酸カリウムウィスカを配合する場合、その配合量
は、前記エラストマー１００重量部に対し２〜１０重量
部に設定される。この配合量が２重里部未満の場合には
、得られる外板の剛性向上効果は小さくなるのみならず
、線膨張係数が８×１０−’／”Ｃよりも大きくなって
しまい、また、１０重量部を超える場合は、外板の耐衝
撃性の低下や表面外観の悪化などの不都合を招く。好ま
しい配合量は、前記エラストマー１００重量部に対し３
〜１０重量部である。When blending potassium titanate whiskers, the blending amount is set to 2 to 10 parts by weight based on 100 parts by weight of the elastomer. If this amount is less than 2 parts, not only will the effect of improving the stiffness of the obtained outer panel become small, but also the coefficient of linear expansion will become larger than 8 × 10-'/''C, and If it exceeds 3 parts by weight, problems such as a decrease in the impact resistance of the outer panel and deterioration of the surface appearance will occur.The preferred blending amount is 3 parts by weight per 100 parts by weight of the elastomer.
~10 parts by weight.
また、硫酸カルシウムウィスカを配合する場合、その配
合量は、前記エラストマー１００重量部に対し７〜１５
重量部に設定される。配合量が上記の下限値未満の場合
、および上記上限値を超える場合には、前記したチタン
酸カリウムウィスカの場合と同様の不都合が生ずるから
である。好ましい配合量は、前記エラストマー１００重
量部に対し５〜１０重量部である。When calcium sulfate whiskers are blended, the blending amount is 7 to 15 parts by weight per 100 parts by weight of the elastomer.
It is set to the weight part. This is because if the blending amount is less than the above lower limit or exceeds the above upper limit, the same disadvantages as in the case of potassium titanate whiskers described above will occur. The preferred amount is 5 to 10 parts by weight per 100 parts by weight of the elastomer.
これらウィスカとしては、その径が０．２〜２０μｍ程
度で、アスペクト比（長さ／径）が２５〜５０程度のも
のが好ましい、このようなウィスカとしては、チタン酸
カリウムウィスカの場合には゛°ティスモＤ” （商品
名、大塊化学（株）製）、また、硫酸カルシウムウィス
カの場合には“フランクリンフアイバー （商品名、大
日精化（株）製）を好適なものとしてあげることができ
る。These whiskers preferably have a diameter of about 0.2 to 20 μm and an aspect ratio (length/diameter) of about 25 to 50. In the case of calcium sulfate whiskers, "Franklin Fiber" (trade name, manufactured by Dainichiseika Chemical Co., Ltd.) can be cited as suitable examples.
（発明の実施例）
実施例１
変性ポリプロピレン５０重量％と、エチレノプロピレン
ゴム５０重景％とを混練してエラストマーとした。(Examples of the Invention) Example 1 An elastomer was prepared by kneading 50% by weight of modified polypropylene and 50% by weight of ethylenenopropylene rubber.
このエラストマー１００重量部に、タルク６重量部、テ
ィスモＤ３重量部を配合し充分に混練した。6 parts by weight of talc and 3 parts by weight of Tismo D were added to 100 parts by weight of this elastomer and thoroughly kneaded.
得られた混練物を押出成形して長さ３００ｍｍ、幅１０
０■、厚み３■の長尺な平板を製造した。The obtained kneaded material was extruded to a length of 300 mm and a width of 10 mm.
A long flat plate with a thickness of 0 cm and a thickness of 3 cm was manufactured.
この平板の弾性率は３７００ｋｇ／ｃｄ、線膨張係数は
６．５Ｘ１０−’／’Ｃであった。また表面には上記充
填材の浮き出しは視認されなかった。The elastic modulus of this flat plate was 3700 kg/cd, and the linear expansion coefficient was 6.5X10-'/'C. Moreover, no protrusion of the filler was visually recognized on the surface.
実施例２
実施例１の場合と同じエラストマー１００重量部に、タ
ルク１０重量部、フランクリンフアイバー５重量部を配
合し混練した。Example 2 To 100 parts by weight of the same elastomer as in Example 1, 10 parts by weight of talc and 5 parts by weight of Franklin fiber were blended and kneaded.
得られた混練物を押出成形して実施例１と同寸法の長尺
な平板を製造した。The obtained kneaded product was extrusion molded to produce a long flat plate having the same dimensions as in Example 1.
この平板の弾性率は３９００ｋｇ／ｃｄ、線膨張係数は
８． ＯＸ １０−’／’Ｃであった。また表面には上
記充填材の浮き出しは視認されなかった。The elastic modulus of this flat plate is 3900 kg/cd, and the linear expansion coefficient is 8. OX 10-'/'C. Moreover, no protrusion of the filler was visually recognized on the surface.
（発明の効果）
以上の説明で明らかなように、本発明の樹脂外板は軽量
で、線膨張係数が８ Ｘ １０−’／’Ｃ以下であり、
またその剛性は高く、表面外観も良好であるため、自動
車のバンパ、サイドガーニッシュ、サイドスポイラ、エ
アダムのような寸法形状の大きい外板として官用である
。(Effects of the Invention) As is clear from the above description, the resin outer plate of the present invention is lightweight, has a coefficient of linear expansion of 8 x 10-'/'C or less,
In addition, since its rigidity is high and its surface appearance is good, it is used for government purposes as large-sized outer panels such as automobile bumpers, side garnishes, side spoilers, and air dams.
Claims (1)
成るエラストマー１００重量部；タルク５〜１５重量部
；および、チタン酸カリウムウィスカ２〜１０重量部ま
たは硫酸カルシウムウィスカ７〜１５重量部；を必須成
分とする樹脂組成物から成ることを特徴とする自動車用
樹脂外板。100 parts by weight of an elastomer consisting of 40-60% by weight of polyolefin and the remainder being synthetic rubber; 5-15 parts by weight of talc; and 2-10 parts by weight of potassium titanate whisker or 7-15 parts by weight of calcium sulfate whisker; as essential components. A resin outer panel for an automobile, characterized in that it is made of a resin composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP195589A JPH02182739A (en) | 1989-01-10 | 1989-01-10 | Resin outer plate for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP195589A JPH02182739A (en) | 1989-01-10 | 1989-01-10 | Resin outer plate for automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02182739A true JPH02182739A (en) | 1990-07-17 |
Family
ID=11516019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP195589A Pending JPH02182739A (en) | 1989-01-10 | 1989-01-10 | Resin outer plate for automobile |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02182739A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03250040A (en) * | 1990-02-28 | 1991-11-07 | Tonen Chem Corp | Polyolefin resin composition and its injection molding |
| CN104231428A (en) * | 2014-08-19 | 2014-12-24 | 佛山市顺德区南凯新材料实业有限公司 | Polypropylene material for automobile engine compartment and preparation method of polypropylene material |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57195134A (en) * | 1981-05-27 | 1982-11-30 | Sumitomo Chem Co Ltd | Resin composition containing inorganic filler |
| JPS6291545A (en) * | 1985-10-17 | 1987-04-27 | Idemitsu Petrochem Co Ltd | Polyolefin resin composition |
| JPS6357653A (en) * | 1986-08-28 | 1988-03-12 | Mitsubishi Motors Corp | Rubber-modified polypropylene resin material |
-
1989
- 1989-01-10 JP JP195589A patent/JPH02182739A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57195134A (en) * | 1981-05-27 | 1982-11-30 | Sumitomo Chem Co Ltd | Resin composition containing inorganic filler |
| JPS6291545A (en) * | 1985-10-17 | 1987-04-27 | Idemitsu Petrochem Co Ltd | Polyolefin resin composition |
| JPS6357653A (en) * | 1986-08-28 | 1988-03-12 | Mitsubishi Motors Corp | Rubber-modified polypropylene resin material |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03250040A (en) * | 1990-02-28 | 1991-11-07 | Tonen Chem Corp | Polyolefin resin composition and its injection molding |
| CN104231428A (en) * | 2014-08-19 | 2014-12-24 | 佛山市顺德区南凯新材料实业有限公司 | Polypropylene material for automobile engine compartment and preparation method of polypropylene material |
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