JP3866869B2 - Polycarbonate resin composition and molded body thereof - Google Patents
Polycarbonate resin composition and molded body thereof Download PDFInfo
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- JP3866869B2 JP3866869B2 JP35584698A JP35584698A JP3866869B2 JP 3866869 B2 JP3866869 B2 JP 3866869B2 JP 35584698 A JP35584698 A JP 35584698A JP 35584698 A JP35584698 A JP 35584698A JP 3866869 B2 JP3866869 B2 JP 3866869B2
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Description
【０００１】
【発明の属する技術分野】
本発明は、ポリカーボネート樹脂組成物およびそれからなる成形体に関し、詳しくは、赤外線遮蔽性と透明性に優れたポリカーボネート樹脂組成物およびそれからなる成形体に関する。
【０００２】
【従来の技術】
可視光線に対して透過であって、赤外線を遮蔽する材料としては、酸化錫、酸化インジウム等の金属酸化物、フタロシアニン系等の有機色素およびジチオール系等の有機金属錯塩等が知られているが、有機色素および有機金属錯塩系は可視光線の透過率が低く、暗褐色から暗青色の濃厚な着色を有している上、耐久性の点でも満足できるものではなかった。
【０００３】
特開平２−１３６２３０号公報には、酸化スズ微粉末を分散状態で含有させた透明合成樹脂を各種形状に成形してなる赤外線吸収性合成樹脂成形品が開示されており、特開平７−７０４８１号公報には、錫ドープ酸化インジウムの粉末を有機樹脂マトリックス中に分散させた赤外線カットオフ材用成形材料が開示されている。しかしながら、酸化錫や錫ドープ酸化インジウムは、溶剤、樹脂等に不溶な粒子状であるため、一次粒子を細かくしても凝集等による分散不良を起こしやすく、樹脂中に溶融混練して分散させた場合、ヘーズが増大し、さらに機械強度等の品質も低下するという問題を有しており、薄膜ではなく、厚みが厚い成形体としての使用法には多くの制限があった。
【０００４】
【発明が解決しようとする課題】
本発明の目的は、可視領域の透過光の拡散や散乱が少なく、赤外線遮蔽性能を有し、且つ衝撃強度等の機械強度に優れるポリカーボネート樹脂組成物およびそれからなる成形体を提供するものである。
【０００５】
【課題を解決するための手段】
本発明は上記の課題を解決するためになされたものであり、その要旨は、ポリカーボネート樹脂１００重量部に対して、錫ドープ酸化インジウム微粒子０．００１重量部以上０．２重量部未満を配合し分散してなるポリカーボネート樹脂組成物に存する。
【０００６】
以下、本発明につき詳細に説明する。
本発明におけるポリカーボネート樹脂としては、好ましくは芳香族ポリカーボネート樹脂が挙げられる。芳香族ポリカーボネート樹脂としては、２，２ビス（４−ヒドキシフェニル）−プロパン、２，２−ビス（３，５−ジブロモ−４−ヒドロキシフェニル）プロパン等で例示される二価のフェノール系化合物の一種以上と、ホスゲンまたはジフェニルカーボネート等で例示されるカーボネート前駆体とから、界面重合、溶融重合または固相重合等の公知の方法によって得られる重合体が挙げられる。ポリカーボネート樹脂は未封止のＯＨ末端を含有していてもよく、その他の末端はフェノール、ｔ−ブチルフェノール等公知の末端封止剤および／または末端修飾剤で封止されていてもよい。また分岐構造等を有していてもよい。
【０００７】
ポリカーボネート樹脂の粘度平均分子量は、２５℃におけるメチレンクロライド溶液粘度より換算した値で、好ましくは１０，０００〜５０，０００であり、より好ましくは１２，０００〜４０，０００である。粘度平均分子量が小さすぎると機械的強度や透明性が不十分になりやすく、大きすぎると加工性や透明性が低下しやすい。
【０００８】
本発明における錫ドープ酸化インジウム微粒子としては、インジウム原子に対して錫原子が１〜２０モル％である錫ドープ酸化インジウム微粒子が挙げられる。錫ドープ酸化インジウムは公知のいかなる方法によっても製造することができる。錫ドープ酸化インジウムにはシランカップリング剤、ケイ酸コティング等の公知の表面処理を行うこともできる。
【０００９】
錫ドープ酸化インジウム微粒子の平均一次粒子径は、好ましくは０．２μｍ以下であり、より好ましくは０．１μｍ以下である。平均一次粒子径が０．２μｍを越えると成形体のヘーズが増大しやすい。
【００１０】
錫ドープ酸化インジウム微粒子の配合量は、ポリカーボネート樹脂１００重量部に対して０．００１重量部以上０．２重量部未満である。０．２重量部以上ではヘーズが大きくなりやすく、機械強度、耐熱性、耐候性等が低下しやすく、０．００１重量部未満であると十分な赤外線吸収効果を得にくい。錫ドープ酸化インジウム微粒子の配合量は、ポリカーボネート樹脂１００重量部に対して、好ましくは０．００２重量部以上０．２重量部未満である。錫ドープ酸化インジウム微粒子をポリカーボネート樹脂にごく僅かの量配合し分散することで、赤外線遮蔽効果に優れ、かつヘーズの増大を抑え、更に機械強度の低下も抑制できる。
【００１１】
ポリカーボネート樹脂に錫ドープ酸化インジウム微粒子を配合し混練分散する際に、錫ドープ酸化インジウム微粒子の分散性向上のために公知の各種分散剤を使用することもできる。分散剤としては、例えばステアリン酸亜鉛等の脂肪酸金属塩化合物、リン酸トリクレジル等のリン酸エステル化合物、ｐトルエンスルフォン酸エステル類等のスルフォン酸エステル化合物、フタル酸エステル系化合物、ポリエチレングリコールまたはそのエステル化合物、さらに式（１）で表される化合物を使用することができる。
【００１２】
【化１】
｛(Ｒ)nＣＯＯ}mＸ （１）
【００１３】
式（１）において、Ｒは炭素数６〜３０の炭化水素基を示し、ｎは１から３の整数、ｍは１〜４の整数を示し、Ｘは水素、炭素数１〜３０の炭化水素基またはアルコール性水酸基を有する炭素数２〜３０の多価アルコール残基である。
【００１４】
式（１）で表される化合物の具体例としては、ステアリン酸、ベヘニン酸、アビエチン酸等のカルボン酸類；グリセリンモノステアレート、グリセリンジステアレート等のグリセリン脂肪酸エステル類；ペンタエリスリトールモノステアレート、ペンタエリスリトールジステアレート、ペンタエリスリトールトリステアレート等のペンタエリスリトール脂肪酸エステル類；ソルビタンモノステアレート等のソルビタン脂肪酸エステル類が挙げられ、好ましくはステアリン酸、グリセリンモノステアレートなどが挙げられる。
分散剤の添加量は。好ましくは、重量比で、分散剤／錫ドープ酸化インジウム微粒子が０．２５〜１００である。
【００１５】
ポリカーボネート樹脂に錫ドープ酸化インジウム微粒子を溶融混練する方法としては、粉末を樹脂に練り混むことのできる任意の方法を用いることができ、各成分をスーパーミキサー、タンブラー等で混合後、あるいは錫ドープ酸化インジウム微粒子と分散剤等とを予め混合後ポリカーボネート樹脂と混合し、単軸押出機、二軸押出機、ロール混練機等を用いて混練する方法が挙げられる。また、ポリカーボネート樹脂と錫ドープ酸化インジウム微粒子等を別々に押出機に添加して混練することもできる。
【００１６】
ポリカーボネート樹脂組成物には、他の有機、無機系赤外線吸収剤のほか、慣用の添加剤を配合することができる。例えば、任意の色調を与えるため、アゾ系染料、シアニン系染料、キノリン系染料、ペリレン系染料など通常熱可塑性樹脂の着色に使用されている染料、顔料のほか、ヒンダードフェノール系、リン系等の安定剤、離型剤、ヒドロキシベンゾフェノン系、サリチル酸系、ＨＡＬＳ系、トリアゾール系等の紫外線吸収剤、カップリング剤、帯電防止剤等をこれらの有効発現量配合してもよい。
【００１７】
ポリカーボネート樹脂組成物は成形することにより、各種の成形体とすることができる。成形方法としては特に制限はなく、押出成形、射出成形、ブロー成形、プレス成形等が挙げられる。成形体としては、板状成形体が挙げられ、また、コーティング層、ラミネート層として、他の透明基板と積層して利用することもできる。
【００１８】
本発明の成形体としては、前記のポリカーボネート樹脂組成物を成形してなり厚みが０．２ｍｍ以上の板状部分を有する成形体である。板状部分の厚みが０．２ｍｍ未満であると基板としての強度が十分でなく、また赤外線遮蔽能力を持たせるために錫ドープ酸化インジウム微粒子の含有量を高める必要があり機械強度等が低下する。板状部分の厚みは好ましくは０．５ｍｍ以上である。板状部分を有する成形体としては、好ましくは板状成形体が挙げられる。
【００１９】
本発明の成形体の板状部分におけるヘーズは、好ましくは８％以下である。ヘーズが８％を越えると透明性が不十分である。本発明の成形体の板状部分におけるヘーズは、より好ましくは６％以下である。また、本発明の成形体の板状部分における１５００ｎｍの光線透過率は、好ましくは５０％以下である。１５００ｎｍにおける光線透過率が５０％を越えると赤外線遮蔽効果が不十分である。１５００ｎｍの光線透過率は、より好ましくは４０％以下である。
【００２０】
成形体の板状部分における光線透過率は、５００ｎｍの光線透過率Ｘと１５００ｎｍの光線透過率Ｙの比（Ｘ／Ｙ）が、好ましくは１．４以上である。光線透過率比（Ｘ／Ｙ）が１．４未満であると赤外線遮蔽効果が不十分である。５００ｎｍの光線透過率Ｘと１５００ｎｍの光線透過率Ｙの比（Ｘ／Ｙ）は、より好ましくは２．０以上である。
【００２１】
上記成形体はその表面の両側または片側にハードコート、紫外線吸収、防曇、帯電防止、反射防止及び／または熱線遮蔽機能を有する機能性層や塗装を直接施してもよく、これらの処理を施した、または未処理のフィルムまたはシート等を成形体表面に装着してもよい。
【００２２】
本発明の成形体表面に上記フィルムまたはシートを装着する方法は特に限定されないが、例えば金型内に装着した、２枚の透明な熱可塑性樹脂フィルムまたはシート間に、本発明のポリカーボネート樹脂組成物を溶融射出充填することにより該フィルムまたはシートと積層一体化した板状成形体を得ることができる。
【００２３】
【実施例】
以下、本発明を実施例により更に詳細に説明するが、本発明はその要旨を越えない限り、以下の実施例に制限されるものではない。
尚、物性評価は以下の方法により行った。
（１）光線透過率：実施例または比較例で得られた、３ｍｍ厚プレートを試料とし、日立製作所（株）製 日立自記分光光度計 Ｕ−３４００を使用して測定した。
【００２４】
（２）ヘイズ：実施例または比較例で得られた、３ｍｍ厚プレートを試料とし、ヘーズメーター（スガ試験機株式会社、商品名ＨＧＭ−２ＤＰ）を使用して測定した。
（３）アイゾッド衝撃強度：ＡＳＴＭ Ｄ２５６に従って３．２ｍｍ厚試験片のノッチありアイゾッド衝撃強度を測定した。
【００２５】
使用した原材料は次のとおりである。
（４）ポリカーボネート樹脂：三菱エンジニアリングプラスチックス（株）製、商品名ユーピロンＳ３０００Ｆ、粘度平均分子量２１，０００。
（５）ポリスチレン樹脂：三菱化学（株）製、商品名ダイヤレックスＨＨ−１０２。
【００２６】
（６）錫ドープ酸化インジウム微粒子：平均一次粒子径が０．１μｍ以下。（以下、「ＩＴＯ」とも称する）
（７）酸化スズ：平均一次粒子径が０．１μｍ以下。
（８）分散剤−１：ステアリン酸モノグリセリド（ＳＭＧ）
（９）分散剤−２：ペンタエリスリトールモノステアレート（ＰＭＳ）
（１０）分散剤−３：ステアリン酸（ＳＡ）
【００２７】
〔実施例１〕
ポリカーボネート樹脂に錫ドープ酸化インジウム微粒子を表−１に記載の量配合し、単軸押出機（田辺プラスチック株式会社製、商品名ＶＳ−４０）によりバレル温度２８０℃で混練しペレット化した。得られたペレットを射出成形し、厚み３ｍｍの板状成形体及びアイゾッド衝撃試験用の３．２ｍｍの試験片を得た。評価結果を表−１に示す。
【００２８】
〔実施例２〜４〕
ポリカーボネート樹脂に錫ドープ酸化インジウム微粒子および分散剤を表−１に記載の量配合し、実施例１同様にしてペレット化を行い、同様に射出成形し、厚み３ｍｍの板状成形体及びアイゾッド衝撃試験用の３．２ｍｍの試験片を得た。評価結果を表−１に示す。
【００２９】
【表１】
〔比較例１〕
ポリカーボネート樹脂を用いて、実施例１同様に射出成形し、厚み３ｍｍの板状成形体及びアイゾッド衝撃試験用の３．２ｍｍの試験片を得た。評価結果を表−１に示す。
〔比較例２〕
実施例１において錫ドープ酸化インジウム微粒子の代わりに酸化スズを用いる以外は、実施例１同様にしてペレット化を行い、同様に射出成形し、厚み３ｍｍの板状成形体及びアイゾッド衝撃試験用の３．２ｍｍの試験片を得た。評価結果を表−１に示す。
【００３１】
〔比較例３〕
実施例２において錫ドープ酸化インジウム微粒子の代わりに酸化スズを用いる以外は、実施例２同様にしてペレット化を行い、同様に射出成形し、厚み３ｍｍの板状成形体及びアイゾッド衝撃試験用の３．２ｍｍの試験片を得た。評価結果を表−１に示す。
【００３２】
〔比較例４〕
ポリスチレン樹脂を用いて、実施例１と同様に射出成形し、厚み３ｍｍの板状成形体及びアイゾッド衝撃試験用の３．２ｍｍの試験片を得た。評価結果を表−１に示す。
〔比較例５〕
ポリスチレン樹脂に錫ドープ酸化インジウム微粒子を表−１に記載の量配合し、実施例１同様にしてペレット化を行い、同様に射出成形し、厚み３ｍｍの板状成形体及びアイゾッド衝撃試験用の３．２ｍｍの試験片を得た。評価結果を表−１に示す。
【００３３】
【表２】
【発明の効果】
本発明のポリカーボネート樹脂組成物は、可視光には透過性で選択的に赤外線を遮蔽する機能を有し、ヘーズが小さく透明性に優れ、且つ衝撃強度にも優れており、赤外線遮蔽性板状成形体用の材料として好適である。また、本発明の成形体は、可視領域の透過光の拡散や散乱が少なく、赤外線遮蔽性能を有し、且つ機械的強度にも優れ、一般窓、自動車のガラス部品等の熱線遮蔽性グレージング材料、赤外線カットフィルター等の光学材料、農業用フィルムなど多くの用途に有用である。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a polycarbonate resin composition and a molded body comprising the same, and specifically relates to a polycarbonate resin composition having excellent infrared shielding properties and transparency and a molded body comprising the same.
[0002]
[Prior art]
Known materials that transmit visible light and shield infrared rays include metal oxides such as tin oxide and indium oxide, organic dyes such as phthalocyanine, and organic metal complexes such as dithiol. Organic dyes and organometallic complex salts have low visible light transmittance, have a deep coloring of dark brown to dark blue, and are not satisfactory in terms of durability.
[0003]
JP-A-2-136230 discloses an infrared-absorbing synthetic resin molded product obtained by molding a transparent synthetic resin containing tin oxide fine powder in a dispersed state into various shapes, and JP-A-7-70481. The publication discloses a molding material for an infrared cut-off material in which tin-doped indium oxide powder is dispersed in an organic resin matrix. However, since tin oxide and tin-doped indium oxide are insoluble particles in solvents, resins, etc., even if the primary particles are fine, they tend to cause poor dispersion due to aggregation and the like, and are melt-kneaded and dispersed in the resin. In such a case, there is a problem that the haze increases and the quality such as mechanical strength also deteriorates, and there are many restrictions on the usage as a molded product having a large thickness rather than a thin film.
[0004]
[Problems to be solved by the invention]
An object of the present invention is to provide a polycarbonate resin composition that has little diffusion and scattering of transmitted light in the visible region, has an infrared shielding performance, and is excellent in mechanical strength such as impact strength, and a molded body comprising the same.
[0005]
[Means for Solving the Problems]
The present invention has been made to solve the above problems, and the gist thereof is that 0.001 part by weight or more and less than 0.2 part by weight of tin-doped indium oxide fine particles is blended with 100 parts by weight of the polycarbonate resin. It exists in the polycarbonate resin composition formed by dispersion.
[0006]
Hereinafter, the present invention will be described in detail.
The polycarbonate resin in the present invention is preferably an aromatic polycarbonate resin. Examples of aromatic polycarbonate resins include divalent phenolic compounds exemplified by 2,2bis (4-hydroxyphenyl) -propane, 2,2-bis (3,5-dibromo-4-hydroxyphenyl) propane, and the like. And a polymer obtained by a known method such as interfacial polymerization, melt polymerization or solid phase polymerization from one or more of the above and a carbonate precursor exemplified by phosgene or diphenyl carbonate. The polycarbonate resin may contain an unsealed OH terminal, and the other terminal may be sealed with a known terminal blocking agent and / or a terminal modifier such as phenol and t-butylphenol. Moreover, you may have a branched structure etc.
[0007]
The viscosity average molecular weight of the polycarbonate resin is a value converted from the viscosity of the methylene chloride solution at 25 ° C., preferably 10,000 to 50,000, more preferably 12,000 to 40,000. If the viscosity average molecular weight is too small, the mechanical strength and transparency tend to be insufficient, and if it is too large, the workability and transparency tend to be lowered.
[0008]
Examples of the tin-doped indium oxide fine particles in the present invention include tin-doped indium oxide fine particles having 1 to 20 mol% of tin atoms with respect to indium atoms. Tin-doped indium oxide can be produced by any known method. The tin-doped indium oxide can be subjected to a known surface treatment such as a silane coupling agent or silicate coating.
[0009]
The average primary particle diameter of the tin-doped indium oxide fine particles is preferably 0.2 μm or less, and more preferably 0.1 μm or less. If the average primary particle diameter exceeds 0.2 μm, the haze of the molded product tends to increase.
[0010]
The compounding quantity of tin dope indium oxide microparticles | fine-particles is 0.001 weight part or more and less than 0.2 weight part with respect to 100 weight part of polycarbonate resin. If it is 0.2 parts by weight or more, haze tends to increase, mechanical strength, heat resistance, weather resistance, etc. tend to decrease, and if it is less than 0.001 parts by weight, it is difficult to obtain a sufficient infrared absorption effect. The amount of tin-doped indium oxide fine particles, with respect to 100 parts by weight of polycarbonate resin, preferably less than 0.2 parts by weight or more 0.00 2 by weight section. By mixing and dispersing a very small amount of tin-doped indium oxide fine particles in a polycarbonate resin, the infrared shielding effect is excellent, an increase in haze can be suppressed, and a decrease in mechanical strength can also be suppressed.
[0011]
When the tin-doped indium oxide fine particles are blended and kneaded and dispersed in the polycarbonate resin, various known dispersants can be used for improving the dispersibility of the tin-doped indium oxide fine particles. Examples of the dispersant include fatty acid metal salt compounds such as zinc stearate, phosphate ester compounds such as tricresyl phosphate, sulfonate ester compounds such as p-toluenesulfonate esters, phthalate ester compounds, polyethylene glycol or esters thereof A compound, and also a compound represented by the formula (1) can be used.
[0012]
[Chemical 1]
{(R) n COO} m X (1)
[0013]
In the formula (1), R represents a hydrocarbon group having 6 to 30 carbon atoms, n represents an integer of 1 to 3, m represents an integer of 1 to 4, X represents hydrogen, and a hydrocarbon having 1 to 30 carbon atoms. It is a C2-C30 polyhydric alcohol residue having a group or an alcoholic hydroxyl group.
[0014]
Specific examples of the compound represented by the formula (1) include carboxylic acids such as stearic acid, behenic acid and abietic acid; glycerin fatty acid esters such as glycerin monostearate and glycerin distearate; pentaerythritol monostearate; Pentaerythritol fatty acid esters such as pentaerythritol distearate and pentaerythritol tristearate; sorbitan fatty acid esters such as sorbitan monostearate, preferably stearic acid and glycerin monostearate.
What is the amount of dispersant added? Preferably, the dispersant / tin-doped indium oxide fine particles have a weight ratio of 0.25 to 100.
[0015]
As a method of melting and kneading tin-doped indium oxide fine particles in polycarbonate resin, any method in which powder can be kneaded and mixed with resin can be used, and after mixing each component with a super mixer, tumbler, etc., or tin-doped oxidation Examples thereof include a method in which indium fine particles and a dispersing agent are mixed in advance and then mixed with a polycarbonate resin and kneaded using a single screw extruder, a twin screw extruder, a roll kneader or the like. Further, the polycarbonate resin and tin-doped indium oxide fine particles can be separately added to the extruder and kneaded.
[0016]
In addition to other organic and inorganic infrared absorbers, conventional additives can be added to the polycarbonate resin composition. For example, azo dyes, cyanine dyes, quinoline dyes, perylene dyes such as azo dyes, cyanine dyes, perylene dyes, pigments, pigments, hindered phenols, phosphorus, etc. Stabilizers, mold release agents, hydroxybenzophenone-based, salicylic acid-based, HALS-based, triazole-based UV absorbers, coupling agents, antistatic agents, and the like may be incorporated in these effective expression amounts.
[0017]
The polycarbonate resin composition can be formed into various molded products by molding. There is no restriction | limiting in particular as a shaping | molding method, Extrusion molding, injection molding, blow molding, press molding, etc. are mentioned. Examples of the molded body include a plate-shaped molded body, and can also be used as a coating layer or a laminate layer by being laminated with another transparent substrate.
[0018]
As a molded object of this invention, it is a molded object which shape | molds the said polycarbonate resin composition and has a plate-shaped part whose thickness is 0.2 mm or more. If the thickness of the plate-like portion is less than 0.2 mm, the strength as a substrate is not sufficient, and it is necessary to increase the content of tin-doped indium oxide fine particles in order to provide infrared shielding ability, resulting in a decrease in mechanical strength and the like. . The thickness of the plate-like part is preferably 0.5 mm or more. The molded body having a plate-like portion is preferably a plate-shaped molded body.
[0019]
The haze in the plate-like portion of the molded body of the present invention is preferably 8% or less. When the haze exceeds 8%, the transparency is insufficient. The haze in the plate-like portion of the molded body of the present invention is more preferably 6% or less. Moreover, the light transmittance of 1500 nm in the plate-like portion of the molded article of the present invention is preferably 50% or less. If the light transmittance at 1500 nm exceeds 50%, the infrared shielding effect is insufficient. The light transmittance at 1500 nm is more preferably 40% or less.
[0020]
The light transmittance in the plate-like portion of the molded body is such that the ratio (X / Y) of the light transmittance X of 500 nm to the light transmittance Y of 1500 nm is preferably 1.4 or more. If the light transmittance ratio (X / Y) is less than 1.4, the infrared shielding effect is insufficient. The ratio (X / Y) of the light transmittance X of 500 nm and the light transmittance Y of 1500 nm is more preferably 2.0 or more.
[0021]
The molded body may be directly coated with a functional layer or coating having a hard coat, ultraviolet absorption, antifogging, antistatic, antireflection, and / or heat ray shielding function on both sides or one side of the surface. Alternatively, an untreated film or sheet may be attached to the surface of the molded body.
[0022]
The method for mounting the film or sheet on the surface of the molded body of the present invention is not particularly limited. For example, the polycarbonate resin composition of the present invention is interposed between two transparent thermoplastic resin films or sheets mounted in a mold. By melt injection filling, a plate-like molded body laminated and integrated with the film or sheet can be obtained.
[0023]
【Example】
EXAMPLES Hereinafter, although an Example demonstrates this invention still in detail, this invention is not restrict | limited to a following example, unless the summary is exceeded.
The physical properties were evaluated by the following methods.
(1) Light transmittance: Measured using a Hitachi recording spectrophotometer U-3400 manufactured by Hitachi, Ltd., using the 3 mm thick plate obtained in Examples or Comparative Examples as a sample.
[0024]
(2) Haze: Using a haze meter (Suga Test Instruments Co., Ltd., trade name HGM-2DP), measurement was performed using a 3 mm-thick plate obtained in Examples or Comparative Examples as a sample.
(3) Izod impact strength: The Izod impact strength with a notch of a 3.2 mm-thick test piece was measured according to ASTM D256.
[0025]
The raw materials used are as follows.
(4) Polycarbonate resin: Mitsubishi Engineering Plastics, trade name Iupilon S3000F, viscosity average molecular weight 21,000.
(5) Polystyrene resin: Mitsubishi Chemical Corporation, trade name Dialex HH-102.
[0026]
(6) Tin-doped indium oxide fine particles: The average primary particle size is 0.1 μm or less. (Hereinafter also referred to as “ITO”)
(7) Tin oxide: The average primary particle size is 0.1 μm or less.
(8) Dispersant-1: Stearic acid monoglyceride (SMG)
(9) Dispersant-2: Pentaerythritol monostearate (PMS)
(10) Dispersant-3: Stearic acid (SA)
[0027]
[Example 1]
Tin-doped indium oxide fine particles were blended into the polycarbonate resin in the amounts shown in Table 1, and kneaded at a barrel temperature of 280 ° C. with a single screw extruder (trade name VS-40, manufactured by Tanabe Plastics Co., Ltd.) to form a pellet. The obtained pellets were injection-molded to obtain a plate-like molded product having a thickness of 3 mm and a 3.2 mm test piece for an Izod impact test. The evaluation results are shown in Table-1.
[0028]
[Examples 2 to 4]
Tin-doped indium oxide fine particles and a dispersant are mixed in polycarbonate resin in the amounts shown in Table 1, pelletized in the same manner as in Example 1, injection molded in the same manner, a 3 mm thick plate-like molded product, and an Izod impact test. A 3.2 mm test piece was obtained. The evaluation results are shown in Table-1.
[0029]
[Table 1]
[Comparative Example 1]
Using a polycarbonate resin, injection molding was carried out in the same manner as in Example 1 to obtain a plate-like molded body having a thickness of 3 mm and a 3.2 mm test piece for an Izod impact test. The evaluation results are shown in Table-1.
[Comparative Example 2]
Except that tin oxide is used in place of tin-doped indium oxide fine particles in Example 1, pelletization is performed in the same manner as in Example 1, injection molding is performed in the same manner, and a 3 mm-thick plate-shaped body and an Izod impact test 3 are used. A 2 mm specimen was obtained. The evaluation results are shown in Table-1.
[0031]
[Comparative Example 3]
Except that tin oxide is used in place of tin-doped indium oxide fine particles in Example 2, pelletization is performed in the same manner as in Example 2, injection molding is performed in the same manner, and a 3 mm-thick plate-shaped body and an Izod impact test 3 are used. A 2 mm specimen was obtained. The evaluation results are shown in Table-1.
[0032]
[Comparative Example 4]
Using polystyrene resin, injection molding was carried out in the same manner as in Example 1 to obtain a plate-like molded body having a thickness of 3 mm and a 3.2 mm test piece for an Izod impact test. The evaluation results are shown in Table-1.
[Comparative Example 5]
The amount of tin-doped indium oxide fine particles described in Table 1 is blended with polystyrene resin, pelletized in the same manner as in Example 1, injection-molded in the same manner, a 3 mm thick plate-shaped product, and 3 for Izod impact test. A 2 mm specimen was obtained. The evaluation results are shown in Table-1.
[0033]
[Table 2]
【The invention's effect】
The polycarbonate resin composition of the present invention is transparent to visible light and has a function of selectively shielding infrared rays, has low haze, excellent transparency, and excellent impact strength. It is suitable as a material for a molded body. Further, the molded article of the present invention has little diffusion and scattering of transmitted light in the visible region, has an infrared shielding performance, and is excellent in mechanical strength, and is a heat ray shielding glazing material for general windows, automotive glass parts, etc. It is useful for many applications such as optical materials such as infrared cut filters, agricultural films.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35584698A JP3866869B2 (en) | 1998-12-15 | 1998-12-15 | Polycarbonate resin composition and molded body thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35584698A JP3866869B2 (en) | 1998-12-15 | 1998-12-15 | Polycarbonate resin composition and molded body thereof |
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| Publication Number | Publication Date |
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| JP2000178428A JP2000178428A (en) | 2000-06-27 |
| JP3866869B2 true JP3866869B2 (en) | 2007-01-10 |
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| JP4187999B2 (en) * | 2002-05-13 | 2008-11-26 | 住友金属鉱山株式会社 | Heat ray shielding resin sheet material and manufacturing method thereof |
| WO2006103906A1 (en) * | 2005-03-28 | 2006-10-05 | Mitsubishi Engineering-Plastics Corporation | Polycarbonate resin composition and hot radiation shielding molded product |
| JP5102969B2 (en) * | 2006-04-14 | 2012-12-19 | 出光興産株式会社 | Polycarbonate resin composition and molded plate thereof |
| CN103131152B (en) * | 2011-11-28 | 2015-12-09 | 比亚迪股份有限公司 | A kind of modified polycarbonate material and preparation method thereof and a kind of phone housing and preparation method thereof |
| CN107001928B (en) | 2014-11-25 | 2018-11-30 | 沙特基础工业全球技术有限公司 | From the method and product of surface emission radiation |
| KR102451711B1 (en) | 2014-11-25 | 2022-10-06 | 사빅 글로벌 테크놀러지스 비.브이. | Method and device for heating a surface |
| CN106603768B (en) * | 2016-12-23 | 2019-05-07 | 东莞市汇诚塑胶金属制品有限公司 | A kind of handset shell and its processing technology of 3D structure |
| CN112512808B (en) * | 2018-07-27 | 2023-05-23 | 株式会社可乐丽 | Infrared shielding laminate and method for producing same |
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