JP4792633B2 - Extruded products for window frames - Google Patents
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【０００１】
【発明の属する技術分野】
本発明は天然木に酷似する表面外観を有し、耐候性及び機械的物性に優れた窓枠を得るための窓枠用塩化ビニル系樹脂組成物及び窓枠用押出成形品に関する。
【０００２】
【従来の技術】
塩化ビニル系樹脂は、一般に、耐衝撃性、耐熱性等の物理的性質や耐候性に優れており、且つ比較的安価であることから、住宅用内外装建材、電線被覆材、自動車等車両用内外装部材、電機機器部材、家具等に広く利用されている。
また、住宅用内外装建材においては、天然木指向を受け、木目模様を付与した押出成形品を製造する様々な方法（例えば、特公昭５７−５５７３５、特公昭６３−５３２１６等）が試みられている。
更に、天然木に近い質感を得る方法として、微細に粉砕された木粉を充填剤とした熱可塑性樹脂組成物は、古くから知られており、特に塩化ビニル系樹脂組成物は着色性、成形性が優れ、かつ比較的安価であることから幅広く用いられている。木粉と塩化ビニル系樹脂組成物を混合した製品は木材と塩化ビニル系樹脂との特徴を併せ持ち、木質感に溢れた意匠性の高いものであり、巾木、廻り縁等の内装建材等に使用されている。
一方、更に、窓枠においても、内装建材の意匠性に同調させ、木質感を表出させるため、窓枠用樹脂押出成形品に木粉などの微粉末を混合して成形する樹脂製窓枠が提案されている。
【０００３】
しかしながら、製品の木質感を高めるためには、従来の知見によれば、例えば樹脂１００重量部に対して１０〜５０重量部程度の多量の木粉を混合する必要があり、そのことは、塩化ビニル系樹脂組成物の耐候性および耐衝撃性等の機械的性質を著しく低下させる問題を有していた。耐衝撃性改良の試みが様々行われているが、木粉の添加されていない窓枠用押出成形品に比べるとそれは極端に低い。
また、耐候性のレベルは未だに低く、特に窓枠という、複雑な形状を持った比較的薄肉の成形品であって、外気と内気の温度差や、季節の温度変化に対抗しうる耐衝撃性や耐候性を必要とする窓枠用押出成形品として使用するには問題点があった。
【０００４】
【発明が解決しようとする課題】
本発明等は、木質感に溢れ、耐候性及び機械的物性に優れた窓枠用樹脂組成物及び成形品を提供することにある。特に好ましくは、木粉などの植物性粉末を全く含まないか、又は樹脂１００重量部に対し５重量部以下の極微量の植物性粉末を含む樹脂組成物であっても、木質粉に溢れ、かつ耐候性及び寒暖の差によらず、機械的物性に優れた窓枠用樹脂組成物及び成形品を提供することにある。
なお、本発明でいう窓枠とは、窓框も含めて呼称する開閉可能なもの以外にはめ殺しも含むものであり、図−１の１ａ，１ｂに示される、アルミ・樹脂複合窓枠の室内側構造部又は／及び図−２の１ｃ，１ｄに示される、樹脂製窓枠の主要構造部及び図−２の５，６部に示されるような意匠材や押縁材を指す。
【０００５】
【課題を解決するための手段】
本発明の要旨とするところは、熱可塑性樹脂からなる基材に、テトラヒドロフランに不溶の架橋ゲル分３〜５０重量％を含む塩化ビニル系樹脂を主成分とする塩化ビニル系樹脂組成物が積層被覆されてなる窓枠用押出成形品、又は熱可塑性樹脂からなる基材に、テトラヒドロフランに不溶の架橋ゲル分３〜５０重量％を含む塩化ビニル系樹脂１００重量部、植物性粉末０．５〜５重量部を有してなる塩化ビニル系樹脂組成物が積層被覆されてなる窓枠用押出成形品にある。
【０００６】
【発明の実施の形態】
本発明を詳細に説明するに、本発明の窓枠用塩化ビニル系樹脂組成物の主成分である塩化ビニル系樹脂は、テトラヒドロフラン（以下ＴＨＦ）に不溶のゲル分を３〜５０重量％含有し、残部がＴＨＦ可溶分からなる塩化ビニル系樹脂であることが必須である。
架橋ゲル分を含んだ塩化ビニル系樹脂は、塩化ビニルとこれに共重合可能な多官能性単量体との混合物を、又は、必要に応じ塩化ビニルと共重合可能な他の単量体とともに、懸濁重合法、塊状重合法、微細懸濁重合法又は、乳化重合法等通常の方法によって製造されたもの全てが用いられる。
【０００７】
塩化ビニル系樹脂中の架橋ゲル分の含有量は、塩化ビニルに多官能性単量体の添加量、反応温度等を調整して、架橋ゲル分が３〜５０重量％の範囲になるように重合する方法によって、所望含有量に調整する。架橋ゲル分を３〜５０重量％になるように調整することにより、成形した窓枠の耐候性及び機械的物性を低下させることなく、成形品表面が適度に荒れた木質感溢れる、意匠性の優れた窓枠となる。架橋ゲル分が３重量％未満では、表面性への効果が少なく、５０重量％を越えると塩化ビニル系樹脂組成物混練時にまとまりが悪く加工性が劣る傾向にあり、また、成形品の機械的物性も劣るようになる。
又、架橋ゲル分が３〜５０重量％の範囲になるように調整する際、架橋ゲル分が５０重量％を越える塩化ビニル系樹脂、更に好ましくは８０重量％を越える塩化ビニル系樹脂を製造し、これを架橋ゲル分を含まない又は、架橋ゲル分の少ない塩化ビニル系樹脂と混合し、架橋ゲル分を３〜５０重量％になるように調整した塩化ビニル系樹脂を用いることによって、成形品表面の木質感は更に向上し、意匠性優れた窓枠となる。
【０００８】
塩化ビニルと共重合する前記多官能性基単量体としては、例えば、ジアリルフタレート、ジアリルイソフタレート、ジアリルテレフタレート等のフタル酸ジアリルエステル類、ジアリルマレート、ジアリルフマレート等のエチレン性不飽和二塩基酸のジアリルエステル類、ジアリルアジペート等の飽和二塩基酸のジアリルエステル類、エチレングリコールジビニルエーテル、ｎ−ブタンジオールジビニルエーテル、デカンジオールジビニルエーテル等のジビニルエーテル類、エチレングリコールジメタクリレート、ジエチレングリコールジメタクリレート等の多価アルコールのジメタクリルエステル、トリメチロールエタン、トリメタクリレート等の多価アルコールのトリメタクリルエステル又は、トリアクリルエステル類。ジアリルエーテル、トリシアヌレート、トリアリルイソシアヌレート、トリアリルトリメリテート等が挙げられる。
【０００９】
また、必要に応じて混合できる他の単量体としては、例えば、酢酸ビニル、プロピオン酸ビニル、ラウリン酸ビニル等のビニルエステル類、メチルアクリレート、エチルアクリレート、ブチルアクリレート等のアクリル酸エステル類、メチルメタクリレート、エチルメタクリレート等のメタクリル酸エステル類、ジブチルマレート、ジエチルマレエート等のマレイン酸エステル類、ジブチルフマレート、ジエチルフマレート等のフマール酸エステル類、ビニルメチルエーテル、ビニルブチルエーテル、ビニルオクチルエーテル等のビニルエーテル類、アクリロニトリル、メタクリロニトリル等のシアン化ビニル類、エチレン、プロピレン、スチレン等のα−オレフィン類、塩化ビニリデン、臭化ビニル等の塩化ビニル以外のハロゲン化ビニリデン又はハロゲン化ビニル類、ジアリルフタレート、エチレングリコールジメタクリレート等が挙げられ、勿論、コモノマーは、上述のものに限定されるものではない。コモノマーは、塩化ビニル系樹脂の構成成分中３０重量％以下、好ましくは２０重量％以下の範囲である。
【００１０】
塩化ビニル系樹脂のＴＨＦ可溶部分の平均重合度は、特に限定するものではないが、加工性、成形性の点からＪＩＳ Ｋ６７２１に基づいた平均重合度が５００〜３５００の範囲、好ましくは７００〜２５００の範囲にあるのが望ましい。
また、ＴＨＦ不溶の架橋ゲル分とは２３℃において塩化ビニル系樹脂１ｇをＴＨＦ２０ｍｌ中で２４時間攪拌後、遠心分離機により分離された残査重量から算出した。
【００１１】
本発明の窓枠用塩化ビニル系樹脂組成物には、必要に応じて、テトラヒドロフランに不溶の架橋ゲル分３〜５０重量％を含む塩化ビニル系樹脂１００重量部に対し、植物性粉末０．５〜５重量部を添加することが木質感を更に高めるために有効である。
配合される植物性粉末は、天然木材、籾殻、パルプ等を微粉砕したものが用いられる。天然木材としては、その原木の種類に特に限定されることなく、針葉樹、広葉樹、ラワン材等いかなるものでも使用できる。また、植物性粉末の粒径は細かいほど望ましく、平均粒径１００μｍ以下が好ましい。添加量は、多いほど木質感に優れるが耐候性及び耐衝撃性等の機械的物性が劣る傾向にあり、塩化ビニル系樹脂１００重量部に対して、０．５〜５重量部が好ましい。
また、必要に応じて、通常良く知られている熱安定剤、滑剤、加工助剤、充填剤、衝撃強度改質剤、紫外線吸収剤、着色剤はもとより、可塑剤、耐熱向上剤、酸化防止剤、帯電防止剤、防かび剤、抗菌剤等周知の各種添加剤を配合してもよい。その配合割合は、前記塩化ビニル系樹脂１００重量部に対して、０．０１〜９０重量部、好ましくは０．０１〜５０重量部である。
【００１２】
本発明の窓枠用塩化ビニル系樹脂組成物は、テトラヒドロフランに不溶の架橋ゲル分３〜５０重量％を含む塩化ビニル系樹脂並びに必要に応じて、上述の各種添加剤を均一に混合することによって調整される。組成物は、粉末状であっても、更に混練機によって混練した後、ペレット状にしてもよい。ペレット状にした場合には、異なった着色剤を含有した窓枠用塩化ビニル系樹脂組成物のペレット２種類以上を混合、成形することによって、より美麗な木目模様を容易に出現させることもできる。
【００１３】
上述の配合成分を混合するのに用いる装置は、実質的に均一に混合できるなら如何なる装置でもよく、例えば、ヘンシェルミキサー、リボンブレンダー、プラネタリーミキサー、万能混合機等の混合機等が挙げられ、また、混合物を混練するには、例えば、単軸押出機、二軸押出機、オープンロール、バンバリーミキサー、ニーダー、加圧ニーダー、インテンシブミキサー等の加熱しながら剪断力下、混練出来る装置が使用される。
【００１４】
本発明の樹脂組成物を用いて、窓枠用成形品を製造するには、特にその製造方法に限定されるものではないが、押出成形が最も容易である。
【００１５】
本発明の窓枠用押出成形品としては、図３の（ｂ）に示すように、上記塩化ビニル系樹脂組成物をそのまま押出成形して得られる単層の成形品と、図３の（ａ）に示すように、熱可塑性樹脂からなる基材（１）の上に上記塩化ビニル系樹脂組成物からなる表皮層（２）が積層被覆されるように押出成形してなる複層成形品が挙げられるが、後者の方が、衝撃強度が高い成形品となるので、より好ましい。
複層押出成形品の基材を構成する熱可塑性樹脂としては、塩化ビニル系樹脂、塩素化ポリエリレン、ポリスチレン、ポリプロピレン、ＡＢＳ、ＡＥＳ、等が挙げられ、上記の表皮材との親和性の高い塩化ビニル系樹脂が特に好ましい。 尚、これら本願発明の特定の塩化ビニル系樹脂組成物によって得られた窓枠用押出成形品の表面は、中心線平均粗さＲａが０．５μｍ以上となり、天然木に酷似した木質感が得られる点で好ましい。
【００１６】
【実施例】
次に本発明の窓枠用塩化ビニル系樹脂組成物及び窓枠用押出成形品を実施例にて、詳述するが、本発明は、その要旨を逸脱しない限り、以下の実施例に限定されるものではない。
【００１７】
実施例１
塩化ビニル樹脂（ＴＨＦ不溶ゲル分０重量％、重合度１０３０）１００重量部、三塩基性硫酸鉛３重量部、二塩基性ステアリン酸鉛１重量部、ステアリン酸鉛１．５重量部、滑剤（三井石油化学工業社製ハイワックス２２０ＭＰ）０．５重量部、アクリル系加工助剤（三菱レイヨン社製メタブレンＰ５５１Ａ）１重量部、炭酸カルシウム（丸尾カルシウム社製ＭＳＫ−Ｐ）５重量部、ＭＢＳ系衝撃強度改質剤（三菱レイヨン社製メタブレンＣ３２３Ａ）５重量部、及び着色剤をヘンシェルミキサーで均一に混合した後、２軸押出機で混練、ペレット化し、ＪＩＳ Ｚ８７２１に準拠したマンセル値１０ＹＲ５／６近似色の塩化ビニル樹脂組成物Ａを調整した。
【００１８】
塩化ビニル系樹脂（ＴＨＦ不溶ゲル分２１重量％、ＴＨＦ可溶分平均重合度１０３０）１００重量部、ステアリン酸カルシウム１．５重量部、ステアリン酸亜鉛０．６重量部、合成ハイドロタルサイト（協和化学社製アルカマイザー１）０．７重量部、ステアロイルベンゾイルメタン０．１５重量部、２，６−ジ−ｔ−ブチル−４−クレゾール０．１５重量部、滑剤（２２０ＭＰ）０．５重量部、アクリル系加工助剤（Ｐ５５１Ａ）１重量部、炭酸カルシウム（ＭＳＫ−Ｐ）５重量部、ＭＢＳ系衝撃強度改質剤（Elf Atochem社製DURASTRENGTH(R)200）１０重量部、紫外線吸収剤（チバガイギー社製チヌビンＰ）０．２重量部、及び着色剤をヘンシェルミキサーで均一に混合した後、２軸押出機で混練、ペレット化し、ＪＩＳ Ｚ８７２１に準拠したマンセル値１０ＹＲ６／６近似色の塩化ビニル系樹脂組成物Ｂ及びマンセル値１０ＹＲ３／４を近似色の塩化ビニル系樹脂組成物Ｃ調整した。
【００１９】
次に、上記塩化ビニル樹脂組成物Ａを６５φ単軸押出機に、上記塩化ビニル系樹脂組成物Ｂ９０重量％，塩化ビニル系樹脂組成物Ｃ１０重量％の混合物を４０φ単軸押出機のそれぞれ投入し、共押出成形により、図−３（ａ）に示される塩化ビニル樹脂組成物Ａを基材とし、塩化ビニル系樹脂組成物Ｂ９０重量％，塩化ビニル系樹脂組成物Ｃ１０重量％の混合物が積層した木目模様の窓枠用複層成形品を製造した。
【００２０】
実施例２
実施例１の塩化ビニル系樹脂組成物Ｂ及びＣに用いた塩化ビニル系樹脂（ＴＨＦ不溶ゲル分２１重量％、ＴＨＦ可溶分平均重合度１０３０）１００重量部が塩化ビニル系樹脂（ＴＨＦ不溶ゲル分８９重量％、ＴＨＦ可溶分平均重合度１０３０）２３重量％と塩化ビニル樹脂（ＴＨＦ不溶ゲル分０重量％、平均重合度１０３０）７７重量％の混合物１００重量部であること以外は実施例１と同一の塩化ビニル系樹脂組成物（Ｂ１、Ｃ１）を用いて、実施例１と同様に窓枠用複層成形品を製造した。
【００２１】
実施例３
実施例２の塩化ビニル系樹脂組成物Ｂ１、Ｃ１に３重量部の木粉を添加した以外は実施例２と同一の塩化ビニル系樹脂組成物（Ｂ２、Ｃ２）を用いて、実施例１と同様に窓枠用複層成形品を製造した。
【００２２】
実施例４
実施例３で用いたＢ２ ９０％とＣ２ １０％の混合物を６５φ単軸押出機に投入し、図−３（ｂ）に示される形状である木目模様の窓枠用単層成形品を製造した。
【００２３】
比較例１
塩化ビニル系樹脂組成物Ｂ及びＣに用いた塩化ビニル系樹脂（ＴＨＦ不溶ゲル分２１重量％、ＴＨＦ可溶分平均重合度１０３０）１００重量部が塩化ビニル樹脂（ＴＨＦ不溶ゲル分０％、平均重合度１０３０）１００重量部であること以外は実施例１と同一の塩化ビニル系樹脂組成物（Ｂ３、Ｃ３）を用いて、実施例１と同様に窓枠用複層成形品を製造した。
【００２４】
比較例２
比較例１の塩化ビニル系樹脂組成物Ｂ３及びＣ３に木粉３０重量部を添加した以外は比較例１と同一の塩化ビニル系樹脂組成物（Ｂ４、Ｃ４）を用いて、実施例１と同様に窓枠用複層成形品を製造した。
【００２５】
比較例３
比較例２で用いたＢ４ ９０％とＣ４ １０％の混合物を用いて、実施例４と同様に、窓枠用単層成形品を製造した。
【００２６】
比較例４
比較例２で用いたＢ４及びとＣ４に用いた木粉３０重量部が３重量部であること以外は比較例２と同一の塩化ビニル系樹脂組成物を用いて、実施例１と同様に窓枠用複層成形品を製造した。
このように得られた成形品を品質評価し、表−１（複層成形品）と表−２（単層成形品）に記した。
【００２７】
評価方法；
（１）シャルピー衝撃値
ＪＩＳ Ｋー７１１１に基づき、２３℃及び−１０℃の雰囲気下で、シャルピー衝撃試験を行った。単位；ｋＪ／ｍ2
（２）表面粗さ
木質感の指針として、ＪＩＳ Ｂ−０６０１に基づき、中心線表面平均粗さＲａを測定した。単位；μｍ
（３）質感
目視により、木質感を判定した。×；木質感なし。△；木質感あり。○；非常に木質感あり。
（４）耐候性
サンシャインウエザーメーター（型式ＷＥＬ−ＳＵＮ−ＨＣＨ、スガ試験機社製）を用い、ブラックパネル温度６３℃、噴霧サイクル１８分／１２０分の条件で、所定時間後、目視及び３箇所の平均色差（△Ｅ）をクラボウ社製、型式ＡＵＣＯＬＯＲ ＶＰ−１で測定した。
○：５００時間後、目視で変化が見られず、△Ｅ＝５未満
×：５００時間後、目視で変退色があり、△Ｅ＝５以上
【００２８】
【表１】
【表２】
【発明の効果】
本発明の窓枠用塩化ビニル系樹脂組成物は、耐候性及び機械的物性に優れた木質感に溢れ、天然木に酷似した窓枠製品が製造できる。
【図面の簡単な説明】
【図１】アルミ・樹脂複合窓枠の一例を示す断面図
【図２】樹脂製窓枠の一例を示す断面図
【図３】本願実施例成形品の形状断面図
【符号の説明】
１ａ，１ｂ，１ｃ，１ｄ：樹脂製窓枠材、２ａ，２ｂ：アルミ性窓枠材、
３：グレージングチャンネル、 ４：複層ガラス、
５：樹脂製意匠材、 ６：樹脂製押縁材、
７：塩化ビニル系樹脂組成物Ａ、
８：塩化ビニル系樹脂組成物Ｂ＋Ｃ[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vinyl chloride resin composition for window frames and an extruded product for window frames to obtain a window frame having a surface appearance very similar to that of natural wood and having excellent weather resistance and mechanical properties.
[0002]
[Prior art]
Vinyl chloride resin is generally excellent in physical properties such as impact resistance and heat resistance and weather resistance, and is relatively inexpensive, so it can be used for interior / exterior building materials for housing, wire coating materials, vehicles such as automobiles, etc. Widely used in interior and exterior members, electrical equipment members, furniture, and the like.
Also, in interior / exterior building materials for homes, various methods (for example, JP-B-57-55735, JP-B-63-53216, etc.) have been tried to produce extruded products that are oriented to natural wood and have a grain pattern. Yes.
Furthermore, as a method for obtaining a texture close to that of natural wood, thermoplastic resin compositions using finely pulverized wood powder as a filler have been known for a long time, and in particular, vinyl chloride resin compositions are colored and molded. It is widely used because of its excellent properties and relatively low cost. A product that mixes wood flour and vinyl chloride resin composition has the characteristics of wood and vinyl chloride resin, and has a high design that overflows the wood texture. It is suitable for interior construction materials such as baseboards and surrounding edges. in use.
On the other hand, in the window frame as well, a resin window frame that is molded by mixing fine powders such as wood powder with a resin extrusion molded product for window frames in order to synchronize with the design of the interior building materials and expose the wood texture. Has been proposed.
[0003]
However, in order to enhance the wood texture of the product, according to the conventional knowledge, for example, it is necessary to mix a large amount of wood flour of about 10 to 50 parts by weight with respect to 100 parts by weight of the resin. There has been a problem that the mechanical properties such as weather resistance and impact resistance of the vinyl resin composition are remarkably lowered. Various attempts to improve impact resistance have been made, but it is extremely low compared to extruded products for window frames to which no wood flour is added.
In addition, the level of weather resistance is still low, and it is a relatively thin molded product with a complex shape, especially a window frame, and it can withstand the temperature difference between the outside air and the inside air, and the seasonal temperature change. In addition, there is a problem in using it as an extruded product for window frames that requires weather resistance.
[0004]
[Problems to be solved by the invention]
An object of the present invention is to provide a resin composition for a window frame and a molded article that are full of wood texture and excellent in weather resistance and mechanical properties. Particularly preferably, even if it is a resin composition containing no plant powder such as wood powder or containing a trace amount of plant powder of 5 parts by weight or less with respect to 100 parts by weight of the resin, it overflows the woody powder, Another object of the present invention is to provide a resin composition for a window frame and a molded product excellent in mechanical properties regardless of the difference in weather resistance and temperature.
In addition, the window frame as used in the present invention includes not only the window that can be opened and closed, but also those that can be opened and closed, and also includes the slaughter and the aluminum / resin composite window frame shown in 1a and 1b of FIG. The interior structure part or / and the design material and edge material as shown in the main structure part of the resin window frame shown in 1c and 1d in FIG. 2 and in parts 5 and 6 in FIG.
[0005]
[Means for Solving the Problems]
It is an aspect of the present invention, the base material made of a thermoplastic resin, vinyl chloride-based resin composition shall be the main component vinyl chloride resin containing a gel fraction 3-50 wt% crosslinking insoluble in tetrahydrofuran 100 parts by weight of a vinyl chloride resin containing 3 to 50% by weight of a cross-linked gel insoluble in tetrahydrofuran on a substrate made of laminated coating or a thermoplastic resin , and a vegetable powder 0.5 vinyl chloride-based resin composition ing a 5 weight parts is in the extrusion window frame formed by laminating coating.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
To describe the present invention in detail, the vinyl chloride resin, which is the main component of the vinyl chloride resin composition for window frames of the present invention, contains 3 to 50% by weight of a gel component insoluble in tetrahydrofuran (hereinafter referred to as THF). In addition, it is essential that the balance is a vinyl chloride resin composed of a THF-soluble component.
A vinyl chloride resin containing a cross-linked gel is prepared by mixing a mixture of vinyl chloride and a polyfunctional monomer copolymerizable therewith, or optionally other monomers copolymerizable with vinyl chloride. Any of those produced by usual methods such as suspension polymerization, bulk polymerization, fine suspension polymerization, or emulsion polymerization can be used.
[0007]
The content of the crosslinked gel in the vinyl chloride resin is adjusted such that the amount of the crosslinked gel is in the range of 3 to 50% by weight by adjusting the addition amount of polyfunctional monomer, reaction temperature, etc. to vinyl chloride. The desired content is adjusted by the polymerization method. By adjusting the cross-linked gel content to be 3 to 50% by weight, the surface of the molded product overflows with a moderately rough wooden texture without reducing the weather resistance and mechanical properties of the molded window frame. An excellent window frame. If the cross-linked gel content is less than 3% by weight, the effect on the surface property is small, and if it exceeds 50% by weight, the unit tends to be poorly organized when the vinyl chloride resin composition is kneaded, and the mechanical properties of the molded product are poor. The physical properties are also inferior.
Further, when adjusting the cross-linked gel content to be in the range of 3 to 50% by weight, a vinyl chloride resin having a cross-linked gel content exceeding 50% by weight, more preferably a vinyl chloride resin exceeding 80% by weight is produced. By using a vinyl chloride resin in which the cross-linked gel content is adjusted to 3 to 50% by weight by mixing it with a vinyl chloride-based resin that does not contain a cross-linked gel content or a low cross-linked gel content, The wood texture of the surface is further improved, and the window frame is excellent in design.
[0008]
Examples of the polyfunctional group monomer copolymerized with vinyl chloride include ethylenically unsaturated dimers such as diallyl phthalates such as diallyl phthalate, diallyl isophthalate, and diallyl terephthalate, and diallyl malate, diallyl fumarate. Diallyl esters of basic acids, diallyl esters of saturated dibasic acids such as diallyl adipate, divinyl ethers such as ethylene glycol divinyl ether, n-butanediol divinyl ether, decanediol divinyl ether, ethylene glycol dimethacrylate, diethylene glycol dimethacrylate A trimethacrylic ester of a polyhydric alcohol such as dimethacrylic ester of a polyhydric alcohol such as trimethylolethane or trimethacrylate, or a triacrylic ester. Examples include diallyl ether, tricyanurate, triallyl isocyanurate, triallyl trimellitate and the like.
[0009]
Examples of other monomers that can be mixed as necessary include vinyl esters such as vinyl acetate, vinyl propionate, and vinyl laurate, acrylic esters such as methyl acrylate, ethyl acrylate, and butyl acrylate, and methyl. Methacrylic acid esters such as methacrylate and ethyl methacrylate, maleic acid esters such as dibutyl maleate and diethyl maleate, fumaric acid esters such as dibutyl fumarate and diethyl fumarate, vinyl methyl ether, vinyl butyl ether, vinyl octyl ether, etc. Vinyl ethers, vinyl cyanides such as acrylonitrile and methacrylonitrile, α-olefins such as ethylene, propylene and styrene, vinylidene halides other than vinyl chloride such as vinylidene chloride and vinyl bromide Emissions or vinyl halides, diallyl phthalate, ethylene glycol dimethacrylate and the like, of course, the comonomer is not limited to those described above. A comonomer is 30 weight% or less in the structural component of a vinyl chloride resin, Preferably it is the range of 20 weight% or less.
[0010]
The average degree of polymerization of the THF soluble portion of the vinyl chloride resin is not particularly limited, but the average degree of polymerization based on JIS K6721 is in the range of 500 to 3500, preferably 700 to 500, from the viewpoint of processability and moldability. It is desirable to be in the range of 2500.
The THF-insoluble crosslinked gel content was calculated from the residual weight separated by a centrifuge after stirring 1 g of vinyl chloride resin at 20 ° C. in 20 ml of THF for 24 hours.
[0011]
In the vinyl chloride resin composition for window frames of the present invention, the vegetable powder 0.5% is added to 100 parts by weight of the vinyl chloride resin containing 3 to 50% by weight of the crosslinked gel insoluble in tetrahydrofuran, if necessary. Addition of ˜5 parts by weight is effective for further enhancing the wood texture.
As the blended vegetable powder, finely pulverized natural wood, rice husk, pulp or the like is used. The natural wood is not particularly limited to the type of the raw wood, and any material such as conifers, hardwoods, lauan woods can be used. Further, the finer the particle size of the vegetable powder is, the more preferable, and the average particle size is preferably 100 μm or less. The larger the amount added, the better the wood texture, but the mechanical properties such as weather resistance and impact resistance tend to be inferior, and 0.5 to 5 parts by weight is preferable with respect to 100 parts by weight of the vinyl chloride resin.
In addition to the well-known heat stabilizers, lubricants, processing aids, fillers, impact strength modifiers, UV absorbers, colorants, plasticizers, heat improvers, antioxidants as needed Various known additives such as agents, antistatic agents, fungicides, and antibacterial agents may be blended. The blending ratio is 0.01 to 90 parts by weight, preferably 0.01 to 50 parts by weight with respect to 100 parts by weight of the vinyl chloride resin.
[0012]
The vinyl chloride resin composition for window frames of the present invention is obtained by uniformly mixing a vinyl chloride resin containing 3 to 50% by weight of a crosslinked gel insoluble in tetrahydrofuran and, if necessary, the above-mentioned various additives. Adjusted. The composition may be in the form of powder or may be further pelletized after being kneaded by a kneader. In the case of pellets, a more beautiful wood grain pattern can easily appear by mixing and molding two or more kinds of vinyl chloride resin compositions for window frames containing different colorants. .
[0013]
The apparatus used for mixing the above-described blending components may be any apparatus as long as it can be mixed substantially uniformly, such as a Henschel mixer, a ribbon blender, a planetary mixer, a universal mixer, etc. In order to knead the mixture, for example, a single-screw extruder, a twin-screw extruder, an open roll, a Banbury mixer, a kneader, a pressure kneader, an intensive mixer, or the like that can be kneaded under shearing force while heating is used. The
[0014]
Although it does not specifically limit to the manufacturing method in order to manufacture the molded article for window frames using the resin composition of this invention, extrusion molding is the easiest.
[0015]
As shown in FIG. 3 (b), the window frame extrusion-molded product of the present invention includes a single-layer molded product obtained by extruding the vinyl chloride resin composition as it is, and FIG. ), A multilayer molded product obtained by extrusion molding so that the skin layer (2) made of the vinyl chloride resin composition is laminated and coated on the base material (1) made of a thermoplastic resin. Although the latter is mentioned, since the latter becomes a molded article with high impact strength, it is more preferable.
Examples of the thermoplastic resin constituting the base material of the multilayer extrusion molded product include vinyl chloride resin, chlorinated polyerylene, polystyrene, polypropylene, ABS, AES, and the like, and chloride having high affinity with the above skin material. A vinyl resin is particularly preferable. In addition, the surface of the extruded product for window frames obtained by the specific vinyl chloride resin composition of the present invention has a center line average roughness Ra of 0.5 μm or more, and a wood texture very similar to natural wood is obtained. This is preferable.
[0016]
【Example】
Next, the vinyl chloride resin composition for window frames and the extrusion-molded product for window frames of the present invention will be described in detail in Examples, but the present invention is limited to the following examples unless departing from the gist thereof. It is not something.
[0017]
Example 1
100 parts by weight of vinyl chloride resin (THF insoluble gel content 0% by weight, polymerization degree 1030), 3 parts by weight of tribasic lead sulfate, 1 part by weight of dibasic lead stearate, 1.5 parts by weight of lead stearate, lubricant ( 0.5 parts by weight of Mitsui Petrochemical Co., Ltd. High Wax 220MP), 1 part by weight of acrylic processing aid (Metbrene P551A manufactured by Mitsubishi Rayon Co., Ltd.), 5 parts by weight of calcium carbonate (MSK-P manufactured by Maruo Calcium Co., Ltd.), MBS An impact strength modifier (Metbrene C323A manufactured by Mitsubishi Rayon Co., Ltd.) 5 parts by weight and a colorant are uniformly mixed with a Henschel mixer, then kneaded and pelletized with a twin screw extruder, and a Munsell value of 10YR5 / 6 according to JIS Z8721. An approximate color vinyl chloride resin composition A was prepared.
[0018]
100 parts by weight of vinyl chloride resin (THF insoluble gel content 21 wt%, THF soluble content average polymerization degree 1030), calcium stearate 1.5 parts by weight, zinc stearate 0.6 parts by weight, synthetic hydrotalcite (Kyowa Chemical) Alkamizer 1) 0.7 parts by weight, 0.15 parts by weight of stearoylbenzoylmethane, 0.15 parts by weight of 2,6-di-t-butyl-4-cresol, 0.5 parts by weight of lubricant (220MP), 1 part by weight of acrylic processing aid (P551A), 5 parts by weight of calcium carbonate (MSK-P), 10 parts by weight of MBS impact strength modifier (DURASTRENGTH (R) 200 manufactured by Elf Atochem), UV absorber (Ciba Geigy) Tinuvin P) 0.2 parts by weight and colorant were uniformly mixed with a Henschel mixer, then kneaded and pelletized with a twin-screw extruder, and MAN in accordance with JIS Z8721 Le value 10YR6 / 6 approximate color approximate colors of vinyl chloride resin composition of vinyl chloride resin composition B and Munsell value 10YR3 / 4 of the C adjusted.
[0019]
Next, the vinyl chloride resin composition A was put into a 65φ single screw extruder, and a mixture of the vinyl chloride resin composition B 90% by weight and the vinyl chloride resin composition C 10% by weight was put into a 40φ single screw extruder. The mixture of 90% by weight of vinyl chloride resin composition B and 10% by weight of vinyl chloride resin composition C was laminated by coextrusion molding based on the vinyl chloride resin composition A shown in FIG. 3 (a). A multilayer molded product for a window frame with a wood grain pattern was manufactured.
[0020]
Example 2
100 parts by weight of the vinyl chloride resin used in the vinyl chloride resin compositions B and C of Example 1 (THF insoluble gel content 21% by weight, THF soluble content average polymerization degree 1030) was vinyl chloride resin (THF insoluble gel). Example, except that it is 100 parts by weight of a mixture of 89% by weight, 23% by weight of THF soluble average polymerization degree 1030) and 77% by weight of vinyl chloride resin (THF insoluble gel content 0% by weight, average polymerization degree 1030) 77% by weight. A window frame multilayer molded article was produced in the same manner as in Example 1 using the same vinyl chloride resin composition (B1, C1) as in Example 1.
[0021]
Example 3
Using the same vinyl chloride resin composition (B2, C2) as in Example 2 except that 3 parts by weight of wood flour was added to the vinyl chloride resin composition B1, C1 of Example 2, Example 1 and Similarly, a multi-layer molded product for window frames was produced.
[0022]
Example 4
A mixture of 90% B2 and 10% C2 used in Example 3 was put into a 65φ single-screw extruder to produce a single-layer molded product for a wood grain window frame having the shape shown in Fig. 3 (b). .
[0023]
Comparative Example 1
100 parts by weight of the vinyl chloride resin (THF insoluble gel content 21% by weight, THF soluble content average polymerization degree 1030) used in the vinyl chloride resin compositions B and C is vinyl chloride resin (THF insoluble gel content 0%, average) Using the same vinyl chloride resin composition (B3, C3) as in Example 1 except that the polymerization degree was 1030) 100 parts by weight, a multi-layer molded article for window frames was produced in the same manner as in Example 1.
[0024]
Comparative Example 2
Similar to Example 1 except that 30 parts by weight of wood flour was added to the vinyl chloride resin compositions B3 and C3 of Comparative Example 1, using the same vinyl chloride resin composition (B4, C4) as Comparative Example 1. A multi-layer molded product for window frames was manufactured.
[0025]
Comparative Example 3
Using a mixture of 90% B4 and 10% C4 used in Comparative Example 2, a single-layer molded product for window frames was produced in the same manner as in Example 4.
[0026]
Comparative Example 4
Using the same vinyl chloride resin composition as in Comparative Example 2 except that 30 parts by weight of the wood flour used in B4 and C4 used in Comparative Example 2 was 3 parts by weight, the window was the same as in Example 1. A multilayer molded product for a frame was produced.
The molded products thus obtained were evaluated for quality and listed in Table-1 (multi-layer molded products) and Table-2 (single-layer molded products).
[0027]
Evaluation methods;
(1) Charpy impact value Based on JIS K-7111, a Charpy impact test was performed in an atmosphere of 23 ° C and -10 ° C. Unit: kJ / m 2
(2) Surface roughness Centerline surface average roughness Ra was measured based on JIS B-0601 as a guideline for wood texture. Unit: μm
(3) The wood texture was determined by visual observation. ×: No wood texture. Δ: Wood texture. ○: Very woody.
(4) Using a weather-resistant sunshine weather meter (model WEL-SUN-HCH, manufactured by Suga Test Instruments Co., Ltd.), with a black panel temperature of 63 ° C. and a spray cycle of 18 minutes / 120 minutes, after a predetermined time, visually and three locations The average color difference (ΔE) was measured with a model AUCOLOR VP-1 manufactured by Kurabo Industries.
○: After 500 hours, no change is visually observed, ΔE = less than 5 ×: After 500 hours, there is a visual discoloration, ΔE = 5 or more
[Table 1]
[Table 2]
【The invention's effect】
The vinyl chloride resin composition for window frames of the present invention overflows with a wood texture excellent in weather resistance and mechanical properties, and can produce a window frame product very similar to natural wood.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing an example of an aluminum / resin composite window frame. FIG. 2 is a cross-sectional view showing an example of a resin window frame.
1a, 1b, 1c, 1d: resin window frame material, 2a, 2b: aluminum window frame material,
3: Glazing channel, 4: Multi-layer glass,
5: Resin design material, 6: Resin edge material,
7: Vinyl chloride resin composition A,
8: Vinyl chloride resin composition B + C
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000394676A JP4792633B2 (en) | 2000-12-26 | 2000-12-26 | Extruded products for window frames |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000394676A JP4792633B2 (en) | 2000-12-26 | 2000-12-26 | Extruded products for window frames |
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| JP2002194160A JP2002194160A (en) | 2002-07-10 |
| JP4792633B2 true JP4792633B2 (en) | 2011-10-12 |
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| JP2000394676A Expired - Lifetime JP4792633B2 (en) | 2000-12-26 | 2000-12-26 | Extruded products for window frames |
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| FR2976515B1 (en) * | 2011-06-16 | 2015-01-09 | Transformation Des Plastiques Sotrap Soc D | PROCESS FOR PRODUCING AN EXTENDED VINYL POLYCHLORIDE (PVC) MEMBER, IN PARTICULAR FOR A WINDOW FRAME FOR A BUILDING FACADE |
| JP2018193474A (en) * | 2017-05-17 | 2018-12-06 | 株式会社Ｌｉｘｉｌ | Resin composition and article |
| KR102024651B1 (en) * | 2018-10-24 | 2019-09-24 | 주식회사 현대엘앤씨 | Method for manufacturing profile for polyvinyl chloride window with real wood texture |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4964671A (en) * | 1972-10-25 | 1974-06-22 | ||
| JPS575739A (en) * | 1980-06-12 | 1982-01-12 | Sumitomo Chem Co Ltd | Vinyl chloride plastisol composition |
| JP3534132B2 (en) * | 1995-03-17 | 2004-06-07 | 日本ゼオン株式会社 | Plastisol composition |
| JPH10219072A (en) * | 1997-02-12 | 1998-08-18 | Mitsui Chem Inc | Vinyl chloride resin composition for giving wood-like grain pattern and molded product using the same |
| JPH10245461A (en) * | 1997-03-04 | 1998-09-14 | Mitsui Chem Inc | Inner window frame of vinyl chloride-based resin |
| JPH11107627A (en) * | 1997-09-30 | 1999-04-20 | Tokyo Gas Co Ltd | Front wall part window frame for kitchen |
| JP3719319B2 (en) * | 1997-11-05 | 2005-11-24 | 三菱化学エムケーブイ株式会社 | Vinyl chloride resin composition |
| JPH11189691A (en) * | 1997-12-26 | 1999-07-13 | Mitsui Chem Inc | Vinyl chloride resin composition and molded article prepared therefrom |
| JPH11189694A (en) * | 1997-12-26 | 1999-07-13 | Nippon Zeon Co Ltd | Vinyl chloride resin composition |
| JP3992851B2 (en) * | 1998-09-17 | 2007-10-17 | 株式会社トクヤマ | Synthetic resin window frame, method of manufacturing frame material used therefor, and window for building opening |
| JP2000219790A (en) * | 1999-02-02 | 2000-08-08 | Taiyo Enbi Kk | Vinyl chloride polymer composition |
| JP3420527B2 (en) * | 1999-04-21 | 2003-06-23 | 株式会社トクヤマ | Synthetic resin window material |
| JP2002003675A (en) * | 2000-06-20 | 2002-01-09 | Riken Technos Corp | Resin composition with woody touch |
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