JP3600665B2 - Rubber reinforced thermoplastic resin material for hot plate fusion and lamp for vehicle - Google Patents
Rubber reinforced thermoplastic resin material for hot plate fusion and lamp for vehicle Download PDFInfo
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- JP3600665B2 JP3600665B2 JP27364195A JP27364195A JP3600665B2 JP 3600665 B2 JP3600665 B2 JP 3600665B2 JP 27364195 A JP27364195 A JP 27364195A JP 27364195 A JP27364195 A JP 27364195A JP 3600665 B2 JP3600665 B2 JP 3600665B2
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- rubber
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- hot plate
- thermoplastic resin
- styrene
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
- B29C65/20—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror"
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/747—Lightning equipment
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Securing Globes, Refractors, Reflectors Or The Like (AREA)
Description
【０００１】
【産業上の利用分野】
本発明は、２種以上の材料を加熱された熱板を用いて溶融した後、溶融部分を圧着することにより結合させる、いわゆる熱板融着に使用される材料に関するものである。
【０００２】
【従来の技術および発明が解決しようとする課題】
近年、樹脂成形品の接合方法として、熱板により溶融後圧着する熱板融着法が溶剤をまったく使用しないことから環境問題の観点より採用されることが増えている。
しかしながらこのような熱板融着法では、一度樹脂が熱板で溶融され再度圧着されるために残留歪みが成形品に残りやすく、そのために例えばヘッドライト等の車両用灯具においては、ワックス等に含まれる溶剤あるいは洗剤等が付着した際に接合部分で容易にクラックが発生する問題がある。
一方、例えばポリプロピレン等のポリオレフィン系樹脂およびポリブチレンテレフタレート等の飽和ポリエステル樹脂は、耐溶剤性に優れるが熱板融着性に劣るという欠点がある。
従って、熱板融着性を低下させることなく、耐溶剤性に優れた熱板融着用材料の開発が望まれていた。
【０００３】
【課題を解決するための手段】
本発明者らは、かかる問題点を解決すべく鋭意検討した結果、ゴム強化熱可塑性樹脂材料中のゴム状重合体のゲル含有量を規制することにより、上記の問題点を解決できることを見い出し本発明に至った。すなわち本発明は、ゲル含有量が０〜８０重量％であるゴム状重合体（但し、アクリル酸エステル系ゴムを除く）の存在下に芳香族ビニル系単量体、シアン化ビニル系単量体または芳香族ビニル系単量体、シアン化ビニル系単量体と（メタ）アクリル酸エステル系単量体、マレイミド系単量体から選ばれた１種または２種以上の単量体を重合してなる共重合体を混合してなるゴム強化スチレン系樹脂、該ゴム強化スチレン系樹脂とポリカーボネート樹脂とのアロイまたは該ゴム強化スチレン系樹脂とポリフェニレンエーテル樹脂とのアロイであることを特徴とする耐溶剤性に優れた熱板融着用ゴム強化熱可塑性樹脂材料を提供するものである。
【０００４】
本発明にて用いられるゴム強化熱可塑性樹脂材料を構成する熱可塑性樹脂としては、ゴム強化スチレン系樹脂、ゴム強化スチレン系樹脂とポリカーボネート樹脂、ポリフェニレンエーテル樹脂、ポリブチレンテレフタレート、ポリエチレンテレフタレート、ポリアリレート等の飽和ポリエステル樹脂および６−ナイロン、６６−ナイロン、１２−ナイロン、４６−ナイロン等のポリアミド樹脂等から選ばれた１種または２種以上の他の熱可塑性樹脂とのアロイ等が挙げられる。
【０００５】
特に、その成形性および耐熱性のバランスから、ゴム強化スチレン系樹脂、ゴム強化スチレン系樹脂とポリカーボネート樹脂とのアロイおよびゴム強化スチレン系樹脂とポリフェニレンエーテル樹脂とのアロイ（変性ＰＰＥ）を用いることが好ましい。
【０００６】
本発明において用いられるゴム強化スチレン系樹脂とは、ポリブタジエン、スチレン−ブタジエン共重合体、アクリロニトリル−ブタジエン共重合体等の共役ジエン系ゴム、エチレン−プロピレン共重合体、エチレン−プロピレン−ノルボルネン共重合体等のエチレン−プロピレン系ゴムなどのゴム状重合体の存在下にスチレン、α−メチルスチレン等の芳香族ビニル系単量体、アクリロニトリル等のシアン化ビニル系単量体または芳香族ビニル系単量体、シアン化ビニル系単量体と（メタ）アクリル酸メチル、（メタ）アクリル酸エチル、（メタ）アクリル酸プロピル等の（メタ）アクリル酸エステル系単量体、N−フェニルマレイミド等のマレイミド系単量体から選ばれた１種または２種以上の単量体を重合してなる共重合体を混合してなる組成物である。
【０００７】
上記グラフト重合体のグラフト率には特に制限はないが、流動性と強度のバランスから３０％〜１５０％が好ましく、その粒径も０．１μｍ〜２．０μｍの範囲のものを用いるのが好ましい。
【０００８】
また、グラフト重合体と混合される共重合体の分子量は５万〜２０万の範囲のものが好ましく、５万未満の分子量の共重合体では極端に耐溶剤性が劣り、また２０万を超えると流動性に劣るため好ましくない。
【０００９】
これらグラフト重合体と共重合体の混合比率には特に制限はないが、好ましくはグラフト重合体１０〜１００重量％および共重合体９０〜０重量％の範囲である。
【００１０】
これらグラフト重合体と共重合体の重合方法には特に制限はなく、乳化重合、懸濁重合、塊状重合、溶液重合またはこれらの組合せを採用することができ、またグラフト重合体と共重合体の混合方法にも特に制限はなく、ラテックス状態での混合、パウダー状態での混合、ペレット状態での混合あるいはこれらの組み合わせにより混合された後、通常使用されるロール、バンバリーミキサーあるいは単軸または２軸押出機等を使用して混合される。
【００１１】
本発明のゴム強化熱可塑性樹脂材料が、ゴム強化スチレン系樹脂と他の熱可塑性樹脂とから構成される場合、その混合比率には特に制限はないが、成形性と耐熱性あるいは強度のバランスからゴム強化スチレン系樹脂１０〜９０重量％と他の熱可塑性樹脂９０〜１０重量％の割合で混合することが好ましく、更に好ましくはゴム強化スチレン系樹脂２０〜８０重量％と他の熱可塑性樹脂８０〜２０重量％の割合である。
【００１２】
また本発明は、ゴム強化熱可塑性樹脂材料を構成するゴム状重合体（但し、アクリル酸エステル系ゴムを除く）のゲル含有量が０〜８０重量％であることを要件とするものである。該ゴム状重合体のゲル含有量が８０重量％を超えると熱板融着後の残留歪みにより、接合部分に容易にクラックが発生するので好ましくない。
【００１３】
なお、ゴム状重合体のゲル含有量を０〜８０重量％に調製する方法としては、ゴム状重合体の種類にもよるが、通常、ゴム状重合体の重合時における、重合温度あるいは分子量調整剤の添加量等により調整することができる。
【００１４】
また、本発明におけるゲル含有量は以下の方法により測定した。
＜ゲル含有量の測定方法＞
ゴム状重合体約１０ｇを精秤（ｃ）後、トルエンに溶解させ、４８時間経過後、予め精秤しておいたガラスフィルターで濾過を行なった。乾燥後ガラスフィルターに残った固形分をガラスフィルターごと精秤し、この時の重量からガラスフィルターの単体の重量を差し引くことでトルエン不溶部の重量（ｄ）を得た。こうして得た重量から以下の式を用いてゲル含量を測定した。
ゲル含量 ＝ ｄ／ｃ×１００ （％）
【００１５】
本発明におけるゴム強化熱可塑性樹脂材料には、必要に応じて安定剤、酸化防止剤、滑剤、顔料、染料、充填剤等を目的に合わせて添加してもよい。
また、特に熱板融着における糸曳き性を改良するためにポリテトラフルオロエチレン等のフッ素樹脂を添加することが有効である。
【００１６】
本発明のゴム強化熱可塑性樹脂材料は、ヘッドライト、ウィンカーレンズ、テールランプ等の熱板融着を必要とする車両用灯具に適用することができる。
【００１７】
以下に実施例を挙げて本発明を詳細に説明するが、本発明はこれらにより何ら制限を受けるものではない。なお、実施例中に示す「部」および「％」は、重量基準によるものである。
【００１８】
〔実施例〕
ゴム強化スチレン系樹脂
ＡＢＳ樹脂（１）：ゴム状重合体としてスチレン−ブタジエン共重合体（スチレン５％：ブタジエン９５％、ゲル含有量９５％）５０部とアクリロニトリル１５部およびスチレン３５部を公知の乳化重合法に基づきグラフト重合し、ＡＢＳ樹脂（１）を得た。
【００１９】
ＡＢＳ樹脂（２）：ゴム状重合体としてスチレン−ブタジエン共重合体（スチレン５％：ブタジエン９５％、ゲル含有量７０％）５０部とアクリロニトリル１５部およびスチレン３５部を公知の乳化重合法に基づきグラフト重合し、ＡＢＳ樹脂（２）を得た。
【００２０】
ＡＢＳ樹脂（３）：ゴム状重合体としてスチレン−ブタジエン共重合体（スチレン５％：ブタジエン９５％、ゲル含有量２０％）５０部とアクリロニトリル１５部およびスチレン３５部を公知の乳化重合法に基づきグラフト重合し、ＡＢＳ樹脂（３）を得た。
【００２１】
ＡＥＳ樹脂：エチレン−プロピレン−ノルボルネン（ヨウ素価８．０、プロピレン含有量４３％、ゲル含有量（０％）５０部とアクリロニトリル１５部およびスチレン３５部を公知の溶液重合法に基づきグラフト重合し、ＡＥＳ樹脂を得た。
【００２２】
ＡＳ樹脂：公知の乳化重合法によりアクリロニトリル２７部およびスチレン７３部を共重合させ、ＡＳ樹脂を得た。
【００２３】
ポリカーボネート樹脂
ＰＣ：住友ダウ社製、カリバー ２００−２０
【００２４】
ポリブチレンテレフタレート樹脂
ＰＢＴ：三菱レーヨン社製、タフペット Ｎ−１０００
【００２５】
ポリエチレンテレフタレート樹脂
ＰＥＴ：三菱レーヨン社製、ダイヤナイトＰＡ−２００
【００２６】
ポリアリレート樹脂
ＰＡＲ：ユニチカ社製、Ｕポリマー Ｕ−１００
【００２７】
ポリアミド樹脂
ＰＡ：ユニチカ社製、ユニチカナイロン Ａ１０３０ＢＲＬ
【００２８】
ポリフェニレンエーテル樹脂
ＰＰＥ：住友化学工業社製 Ｈ−５１
【００２９】
ポリプロピレン樹脂
ＰＰ：住友化学工業社製 ノーブレン Ｗ−５３１
【００３０】
尚、ゴム強化スチレン系樹脂と他の熱可塑性樹脂との混合は、ペレットの状態で混合した後、単軸押出機（田辺プラスチックス機械社製、シリンダー温度を２５０〜２８０℃に設定、ダルメージタイプのスクリュー使用）を使って混練することによりそれぞれ混合物（アロイ）を得た。
【００３１】
表１または表２に示す熱可塑性樹脂材料を射出成形機（日本製鋼所製、Ｊ−１５０ＥＰ）を使い、２８０℃の温度で、図１に示すリブ付き平板に成形した後、以下の方法によりポリメチルメタアクリレートと熱板融着を行い、熱板融着性および耐溶剤性を評価した。
また、熱板融着に使用したポリメチルメタアクリレート（スミペックス ＭＭ：住友化学工業社製）も上記と同様の方法でリブ付平板を成形（温度２６０℃）した。
【００３２】
＜熱板融着の方法＞
表１または表２に示す熱可塑性樹脂材料は３２０℃に加熱された熱板に、ポリメチルメタアクリレートは３８０℃に加熱された熱板にそれぞれのリブの部分を１０秒間圧着させた後、そのリブ同志を張合わせる。その後直ちに水冷されたプレス機を使って１０Ｋｇｆ／ｃｍ２ の圧力を６０秒間かけ、完全に融着を行った。
【００３３】
＜耐溶剤性の評価＞
熱板融着を行なった試験片をキシレン−エタノール溶液（５：９５重量比）に１０分間浸漬し、試験片に発生するクラックの状態を観察し、耐溶剤性を以下の基準にて判定した。
○：クラック発生無し
×：クラック発生
【００３４】
＜熱板融着性の評価＞
上記と同様の方法で得られた試験片を１０ｍｍ幅に切断し、これを用いて接着強度を測定した。測定は、引張試験機（島津製作所製、ＡＧ−５００）を使用して、引張速度５ｍｍ／ｍｉｎの条件で、引張試験を行った際の試験片の破壊状態を観察した。
○：材料破壊
×：界面破壊
【００３５】
【表１】
【表２】
【発明の効果】
本発明のゴム強化熱可塑性樹脂材料は、熱板融着性を低下させることなく、耐溶剤性に優れるものであり、ヘッドライト、ウィンカーレンズ、テールランプ等の熱板融着を必要とする車両用灯具に好適に使用することができる。
【図面の簡単な説明】
【図１】熱板融着用リブ付平板の斜視図である。
【符号の説明】
１：熱板融着用リブ付平板
２：リブ[0001]
[Industrial applications]
The present invention relates to a material used for so-called hot plate fusion, in which two or more types of materials are melted using a heated hot plate, and then the fused portions are joined by pressure bonding.
[0002]
2. Description of the Related Art
In recent years, as a joining method of resin molded products, a hot plate fusion method in which a hot plate is melted and then press-bonded is not used at all, and is increasingly used from the viewpoint of environmental problems.
However, in such a hot plate fusion method, since the resin is once melted by the hot plate and pressed again, residual distortion is likely to remain in the molded product. There is a problem that a crack is easily generated at a joint portion when the contained solvent or detergent adheres.
On the other hand, for example, polyolefin resins such as polypropylene and saturated polyester resins such as polybutylene terephthalate have a drawback that they are excellent in solvent resistance but inferior in hot plate fusion property.
Therefore, there has been a demand for development of a hot plate fusing material having excellent solvent resistance without lowering the hot plate fusing property.
[0003]
[Means for Solving the Problems]
The present inventors have conducted intensive studies to solve such problems, and as a result, found that the above problems can be solved by regulating the gel content of the rubber-like polymer in the rubber-reinforced thermoplastic resin material. Invented the invention. That is, the present invention provides an aromatic vinyl-based monomer and a vinyl cyanide-based monomer in the presence of a rubbery polymer having a gel content of 0 to 80% by weight (excluding acrylate rubber). Alternatively, one or two or more monomers selected from aromatic vinyl monomers, vinyl cyanide monomers, (meth) acrylate monomers, and maleimide monomers are polymerized. A rubber-reinforced styrene-based resin obtained by mixing a copolymer comprising the same, an alloy of the rubber-reinforced styrene-based resin and a polycarbonate resin or an alloy of the rubber-reinforced styrene-based resin and a polyphenylene ether resin. An object of the present invention is to provide a rubber-reinforced thermoplastic resin material for hot plate fusion which is excellent in solvent properties.
[0004]
The thermoplastic resin constituting the rubber-reinforced thermoplastic resin material used in the present invention includes rubber-reinforced styrene-based resin, rubber-reinforced styrene-based resin and polycarbonate resin, polyphenylene ether resin, polybutylene terephthalate, polyethylene terephthalate, polyarylate and the like. And an alloy with one or more thermoplastic resins selected from polyamide resins such as 6-nylon, 66-nylon, 12-nylon and 46-nylon.
[0005]
In particular, in view of the balance between moldability and heat resistance, it is preferable to use rubber-reinforced styrene-based resin, alloy of rubber-reinforced styrene-based resin and polycarbonate resin, and alloy of rubber-reinforced styrene-based resin and polyphenylene ether resin (modified PPE). preferable.
[0006]
The rubber-reinforced styrene resin used in the present invention includes polybutadiene, styrene-butadiene copolymer, conjugated diene rubber such as acrylonitrile-butadiene copolymer, ethylene-propylene copolymer, ethylene-propylene-norbornene copolymer In the presence of a rubbery polymer such as ethylene-propylene rubber such as styrene, an aromatic vinyl monomer such as styrene and α-methylstyrene, a vinyl cyanide monomer such as acrylonitrile, or an aromatic vinyl monomer Body, vinyl cyanide monomer and (meth) acrylate monomer such as methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, maleimide such as N-phenylmaleimide Mixing a copolymer obtained by polymerizing one or more monomers selected from the series monomers It is a composition.
[0007]
Although the graft ratio of the graft polymer is not particularly limited, it is preferably 30% to 150% in view of the balance between fluidity and strength, and the particle size thereof is preferably 0.1 μm to 2.0 μm. .
[0008]
Further, the molecular weight of the copolymer mixed with the graft polymer is preferably in the range of 50,000 to 200,000, and a copolymer having a molecular weight of less than 50,000 has extremely poor solvent resistance and exceeds 200,000. And poor fluidity are not preferred.
[0009]
The mixing ratio of the graft polymer and the copolymer is not particularly limited, but is preferably in the range of 10 to 100% by weight of the graft polymer and 90 to 0% by weight of the copolymer.
[0010]
There is no particular limitation on the polymerization method of these graft polymers and copolymers, and emulsion polymerization, suspension polymerization, bulk polymerization, solution polymerization or a combination thereof can be employed. There is no particular limitation on the mixing method. After mixing in a latex state, mixing in a powder state, mixing in a pellet state, or a combination thereof, a roll, a Banbury mixer or a single-axis or two-axis usually used is used. It is mixed using an extruder or the like.
[0011]
When the rubber-reinforced thermoplastic resin material of the present invention is composed of a rubber-reinforced styrene-based resin and another thermoplastic resin, the mixing ratio is not particularly limited, but from the balance between moldability and heat resistance or strength. It is preferable to mix 10 to 90% by weight of the rubber-reinforced styrene resin and 90 to 10% by weight of the other thermoplastic resin, and more preferably, to mix 20 to 80% by weight of the rubber-reinforced styrene resin and the other thermoplastic resin 80. -20% by weight.
[0012]
In the present invention, the gel content of the rubber-like polymer (excluding the acrylate-based rubber) constituting the rubber-reinforced thermoplastic resin material is required to be 0 to 80% by weight. If the gel content of the rubber-like polymer is more than 80% by weight, cracks are easily generated in the joints due to residual strain after hot plate fusion, which is not preferable.
[0013]
The method for adjusting the gel content of the rubber-like polymer to 0 to 80% by weight depends on the type of the rubber-like polymer, but usually, the polymerization temperature or the molecular weight adjustment during the polymerization of the rubber-like polymer. It can be adjusted by the amount of the agent added.
[0014]
The gel content in the present invention was measured by the following method.
<Method for measuring gel content>
About 10 g of the rubbery polymer was precisely weighed (c) and then dissolved in toluene. After 48 hours, filtration was performed with a glass filter that had been precisely weighed in advance. The solid content remaining in the glass filter after drying was precisely weighed together with the glass filter, and the weight (d) of the toluene-insoluble portion was obtained by subtracting the weight of the glass filter alone from the weight at this time. The gel content was determined from the weight thus obtained using the following equation.
Gel content = d / c × 100 (%)
[0015]
If necessary, a stabilizer, an antioxidant, a lubricant, a pigment, a dye, a filler, and the like may be added to the rubber-reinforced thermoplastic resin material of the present invention according to the purpose.
In addition, it is effective to add a fluororesin such as polytetrafluoroethylene to improve the stringiness in hot plate fusion.
[0016]
The rubber-reinforced thermoplastic resin material of the present invention can be applied to vehicle lamps that require hot plate fusion, such as headlights, turn signal lenses, and tail lamps.
[0017]
Hereinafter, the present invention will be described in detail with reference to Examples, but the present invention is not limited thereto. In the examples, “parts” and “%” are based on weight.
[0018]
〔Example〕
Rubber-reinforced styrene resin ABS resin (1): 50 parts of styrene-butadiene copolymer (styrene 5%: butadiene 95%, gel content 95%), 15 parts of acrylonitrile and 35 parts of styrene are known as rubbery polymers. An ABS resin (1) was obtained by graft polymerization based on the emulsion polymerization method.
[0019]
ABS resin (2): 50 parts of styrene-butadiene copolymer (styrene 5%: butadiene 95%, gel content 70%), 15 parts of acrylonitrile and 35 parts of styrene as a rubbery polymer based on a known emulsion polymerization method. Graft polymerization was performed to obtain an ABS resin (2).
[0020]
ABS resin (3): 50 parts of a styrene-butadiene copolymer (styrene 5%: butadiene 95%, gel content 20%) as rubbery polymer, 15 parts of acrylonitrile and 35 parts of styrene based on a known emulsion polymerization method. Graft polymerization was performed to obtain an ABS resin (3).
[0021]
AES resin: ethylene-propylene-norbornene (iodine value 8.0, propylene content 43%, gel content (0%) 50 parts, acrylonitrile 15 parts and styrene 35 parts are graft-polymerized based on a known solution polymerization method, AES resin was obtained.
[0022]
AS resin: 27 parts of acrylonitrile and 73 parts of styrene were copolymerized by a known emulsion polymerization method to obtain an AS resin.
[0023]
Polycarbonate resin PC: Caliber 200-20, manufactured by Sumitomo Dow
[0024]
Polybutylene terephthalate resin PBT: manufactured by Mitsubishi Rayon Co., Ltd., Toughpet N-1000
[0025]
Polyethylene terephthalate resin PET: manufactured by Mitsubishi Rayon Co., Ltd., Dianite PA-200
[0026]
Polyarylate resin PAR: manufactured by Unitika, U-Polymer U-100
[0027]
Polyamide resin PA: Unitika Nylon A1030BRL manufactured by Unitika
[0028]
Polyphenylene ether resin PPE: H-51 manufactured by Sumitomo Chemical Co., Ltd.
[0029]
Polypropylene resin PP: Noblen W-531 manufactured by Sumitomo Chemical Co., Ltd.
[0030]
The rubber-reinforced styrenic resin and other thermoplastic resin were mixed in a pellet state, and then mixed with a single screw extruder (manufactured by Tanabe Plastics Machinery Co., Ltd., cylinder temperature was set to 250 to 280 ° C. The mixture (alloy) was obtained by kneading using each type of screw.
[0031]
The thermoplastic resin material shown in Table 1 or Table 2 is molded into a flat plate with ribs shown in FIG. 1 at a temperature of 280 ° C. using an injection molding machine (J-150EP manufactured by Nippon Steel Works), and then the following method is used. Hot plate fusion was performed with polymethyl methacrylate, and the hot plate fusion property and solvent resistance were evaluated.
Also, polymethyl methacrylate (SUMIPEX MM: manufactured by Sumitomo Chemical Co., Ltd.) used for hot plate fusion was formed into a flat plate with ribs (temperature: 260 ° C.) in the same manner as above.
[0032]
<Hot plate fusion method>
The thermoplastic resin material shown in Table 1 or Table 2 was pressed on a hot plate heated to 320 ° C., and polymethyl methacrylate was pressed on a hot plate heated to 380 ° C. for 10 seconds, and then each rib was pressed for 10 seconds. Combine ribs together. Immediately thereafter, a pressure of 10 Kgf / cm 2 was applied for 60 seconds using a water-cooled press machine to perform complete fusion.
[0033]
<Evaluation of solvent resistance>
The test piece subjected to hot plate fusion was immersed in a xylene-ethanol solution (5:95 weight ratio) for 10 minutes, the state of cracks generated in the test piece was observed, and the solvent resistance was determined according to the following criteria. .
：: No crack generation ×: Crack generation
<Evaluation of hot plate adhesion>
The test piece obtained in the same manner as above was cut into a 10 mm width, and the adhesive strength was measured using the cut piece. The measurement was performed using a tensile tester (manufactured by Shimadzu Corporation, AG-500) under the condition of a tensile speed of 5 mm / min, and the destruction state of the test piece when a tensile test was performed was observed.
：: Material destruction ×: Interfacial destruction
[Table 1]
[Table 2]
【The invention's effect】
The rubber-reinforced thermoplastic resin material of the present invention has excellent solvent resistance without deteriorating the hot-plate fusion property, and is suitable for vehicles requiring hot-plate fusion such as headlights, turn signal lenses, and tail lamps. It can be suitably used for lamps.
[Brief description of the drawings]
FIG. 1 is a perspective view of a flat plate with ribs for fusing a hot plate.
[Explanation of symbols]
1: Flat plate with rib for fusing hot plate 2: Rib
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27364195A JP3600665B2 (en) | 1995-09-26 | 1995-09-26 | Rubber reinforced thermoplastic resin material for hot plate fusion and lamp for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27364195A JP3600665B2 (en) | 1995-09-26 | 1995-09-26 | Rubber reinforced thermoplastic resin material for hot plate fusion and lamp for vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0987471A JPH0987471A (en) | 1997-03-31 |
| JP3600665B2 true JP3600665B2 (en) | 2004-12-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27364195A Expired - Fee Related JP3600665B2 (en) | 1995-09-26 | 1995-09-26 | Rubber reinforced thermoplastic resin material for hot plate fusion and lamp for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3600665B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4029497B2 (en) * | 1997-11-26 | 2008-01-09 | テクノポリマー株式会社 | LAMP BODY FOR VEHICLE LIGHT, ITS MANUFACTURING METHOD, AND VEHICLE LIGHT USING THE SAME |
| US6450675B1 (en) * | 1999-01-21 | 2002-09-17 | Kaneka Corp. | Vehicle lamp composition and method of manufacturing |
| JP2001164123A (en) * | 1999-12-09 | 2001-06-19 | Techno Polymer Co Ltd | Thermoplastic resin composition |
| US20060065363A1 (en) * | 2004-09-29 | 2006-03-30 | General Electric Company | Method for reducing stringiness of a resinous composition during hot plate welding |
-
1995
- 1995-09-26 JP JP27364195A patent/JP3600665B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0987471A (en) | 1997-03-31 |
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