JPH0311304B2 - - Google Patents
Info
- Publication number
- JPH0311304B2 JPH0311304B2 JP59031791A JP3179184A JPH0311304B2 JP H0311304 B2 JPH0311304 B2 JP H0311304B2 JP 59031791 A JP59031791 A JP 59031791A JP 3179184 A JP3179184 A JP 3179184A JP H0311304 B2 JPH0311304 B2 JP H0311304B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- parts
- vinyl chloride
- glass fibers
- short glass
- 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.)
- Expired - Lifetime
Links
- 239000003365 glass fiber Substances 0.000 claims description 29
- 229920005989 resin Polymers 0.000 claims description 28
- 239000011347 resin Substances 0.000 claims description 28
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 claims description 23
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 12
- 239000000395 magnesium oxide Substances 0.000 claims description 11
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 11
- 229920000578 graft copolymer Polymers 0.000 claims description 10
- 239000004709 Chlorinated polyethylene Substances 0.000 claims description 9
- 239000011256 inorganic filler Substances 0.000 claims description 7
- 229910003475 inorganic filler Inorganic materials 0.000 claims description 7
- 239000011342 resin composition Substances 0.000 claims description 5
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 4
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 description 25
- 230000000704 physical effect Effects 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 10
- 235000012245 magnesium oxide Nutrition 0.000 description 10
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 9
- 238000000465 moulding Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 229920002319 Poly(methyl acrylate) Polymers 0.000 description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 description 4
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 4
- 229920002554 vinyl polymer Polymers 0.000 description 4
- 239000004593 Epoxy Substances 0.000 description 3
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 3
- 230000002542 deteriorative effect Effects 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 238000009472 formulation Methods 0.000 description 3
- 229910000077 silane Inorganic materials 0.000 description 3
- 239000004801 Chlorinated PVC Substances 0.000 description 2
- 239000006057 Non-nutritive feed additive Substances 0.000 description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000003607 modifier Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000005909 Kieselgur Substances 0.000 description 1
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229920000457 chlorinated polyvinyl chloride Polymers 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- -1 organic acid salts Chemical class 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000005033 polyvinylidene chloride Substances 0.000 description 1
- 229940088417 precipitated calcium carbonate Drugs 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 230000002087 whitening effect Effects 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Description
（産業上の利用分野）
本発明は、線膨張率が小さく而も物性及び外観
が優れた成形品、特に雨樋、デツキ材、窓枠等の
薄肉成形品に好適な塩化ビニル系樹脂組成物に関
する。
（従来技術）
近年、塩化ビニル系樹脂製成形品、例えば、硬
質塩化ビニル製雨樋が多く用いられるようになつ
てきているが、硬質塩化ビニル製雨樋は金属製雨
樋と比べて線膨張率が大きく、使用時、気温の変
化により、長手方向の長さが変化して接続部又は
止め金具の部分で変形や破損を起こしたり、日射
を直接受けた部分が熱膨張して曲がつたり波打つ
たりしやすいという欠点があつた。
しかして、従来、特公昭53−21891号公報に記
載の如く、50〜180の粘度指数のビニル樹脂100重
量部と、個々の粒子の平均直径が0.05〜50μであ
る無機充填剤10〜60重量部と、潤滑剤1.5〜５重
量部と、長さ４〜６mmのガラス繊維５〜40重量部
とを有する押出成形組成物が提案されているが、
ガラス繊維が樹脂中に均一に分散しにくく、又混
入されたガラス繊維とビニル樹脂との接着性が悪
くて、ガラス繊維の周りに大きな空隙が発生し、
このためガラス繊維が加えられる前のビニル樹脂
に比べて、成形品の耐衝撃性等の物性が著しく低
下してしまい、又成形性が著しく悪くなり、成形
品の表面状態が滑らかとならず、外観が悪いばか
りでなく、これが起因して、屋外で使用された時
に短時間の内に白化する（チヨーキング）という
欠点があつた。
（発明の目的）
本発明者は、如上の事実に鑑がみ、鋭意検討し
た結果、ガラス短繊維の長さを極く短くし、且つ
ガラス短繊維と樹脂との間の密着性を良くする改
質剤を加え、更に成形時の練りを良くする加工助
剤を加え、成形時のプレートアウトを防止する酸
化マグネシウムを加えることにより、叙上の如き
従来の欠点を解消し得ることを見い出し本発明を
なすに至つたものであり、本発明は、線膨張率が
小さくて熱変形が起こりにくく、しかも耐衝撃性
等の物性が優れ、且つ成形性及び耐候性が優れ、
表面状態の滑らかな成形品、特に雨樋、デツキ
材、窓枠等の薄肉の成形品に好適な塩化ビニル系
樹脂組成物をを提供することを目的とするもので
ある。
（発明の要旨）
本発明の要旨は、1.塩化ビニル系樹脂80乃至
100重量部に、エチレン−酢酸ビニル−塩化ビニ
ルグラフト共重合体５乃至50重量部と、ガラス短
繊維５乃至30重量部と、塩素ポリエチレン５乃至
20重量部と、ポリメチルアクリレート１乃至５重
量部と、酸化マグネシウム0.05乃至３重量部と、
酸化マグネシウム0.05乃至３重量部とを加えてな
る塩化ビニル系樹脂組成物（以下「本発明組成物
１」という）及び２塩化ビニル系樹脂80乃至100
重量部に、エチレン−酢酸ビニル−塩化ビニルグ
ラフト共重合体５乃至50重量部と、ガラス短繊維
５乃至30重量部と、塩素化ポリエチレン５乃至20
重量部と、ポリメチルアクリレート１乃至５重量
部と、酸化マグネシウム0.05乃至３重量部と、無
機充填剤５乃至50重量部とを加えてなる塩化ビニ
ル系樹脂組成物（以下「本発明組成物２」とい
う）に存する。
（発明の構成）
本発明組成物１，２に使用される塩化ビニル系
樹脂としては、例えば、ポリ塩化ビニル
（PVC）、ポリ塩化ビニリデン及び塩素化ポリ塩
化ビニル（塩素化PVC）等が好適に使用され、
就中、ポリ塩化ビニル（PVC）が特に好適に使
用される。
本発明組成物１，２に使用されるエチレン−酢
酸ビニル−塩化ビニルグラフト共重合体として
は、例えば、酢酸ビニル含量が10乃至20重量％前
後のエチレン−酢酸ビニル共重合体５乃至60重量
部に塩化ビニル95乃至60重量部がグラフト重合さ
れたもので平均重合度700乃至1400のものが好適
に使用される。
本発明組成物１，２に使用されるガラス短繊維
としては、例えば、ストランドが長さ0.05〜３mm
（成形品中に存在時）に切断されたガラスチヨツ
プや、長さ0.05〜３mm（成形品中に存在時）に切
断されたパイル状のもの等が好適に使用され、就
中、長さ0.05〜３mm（成形品中に存在時）に切断
されたガラスチヨツプが特に好適に使用され、又
エポキシシラン等のカツプリング処理剤にて表面
処理されたものが好適に使用される。
本発明組成物１，２に使用用される塩素ポリエ
チレンは、系中に加えられることにより、ガラス
短繊維と塩化ビニル系樹脂との間の密着性を改良
し、ガラス短繊維の周りに発生する空隙を小さく
押さえ、成形品の耐衝撃強度等を向上させるもの
である。
本発明組成物１，２に使用される、酸化マグネ
シウムとしては、一般に市販のものが塩化ビニル
系樹脂に対する相容性が良く好適に使用される。
本発明組成物２に使用される無機充填剤として
は、例えば、沈降性炭酸カルシウム、軽微性炭酸
カルシユウム、極微細炭酸カルシウムの如き炭酸
カルシウム、シリカ、タルク、ケイソウ土、クレ
ー、マイカ等のケイ酸塩及びアルミナ等が好適に
使用され、就中、極微細炭酸カルシウムが特に好
適に使用され、又有機酸塩等で表面処理されたも
のが好適に使用され、又粒子径が0.1μ以下のもの
が好適に使用される。
本発明組成物１，２においては、上記のものの
他、安定剤、顔料が必要に応じて併用されてもよ
い。
本発明組成物１，２においては、他の成分と共
に、塩化ビニル系樹脂80乃至100重量部に対して、
エチレン−酢酸ビニル−塩化ビニルグラフト共重
合体５乃至50重量部加えることにより、線膨張率
を大きくさせることなく、成形品の耐衝撃性、剛
性等の物性及び耐候性を改良する。エチレン−酢
酸ビニル−塩化ビニルグラフト共重合体が全く加
えられないか、又は５重量部未満の少量加えられ
ただけでは、充分な効果が期待できず、又50重量
部を越えるような多量加えられた場合は、線膨張
率が大きくなつてしまう。
本発明組成物１，２においては、他の成分と共
に、ガラス短繊維を、塩化ビニル系樹脂80乃至
100重量部に対して、５乃至30重量部加えること
により、成形性及び耐衝撃性等を悪くさせること
なく、成形品の線膨張率を小さくし、且つ剛性を
大きくし、温度変化により熱変形しにくくする。
ガラス短繊維が全く加えられていないか又はその
添加量が５重量部未満の少量加えられただけで
は、充分な効果が期待できず、又30重量部を越え
るような多量加えられた場合は、成形性が悪くな
り、成形品の外観が滑らかとならず、又耐衝撃性
及び耐候性が悪くなつてしまう。
本発明組成物１，２においては、他の成分と共
に、前記塩素化ポリエチレンを、塩化ビニル系樹
脂80乃至100重量部に対して、５乃至20重量部加
えることにより、線膨張率を大きくさせることな
く、成形品の耐衝撃性及び剛性等の物性を改良す
る。改質剤が全く加えられないか又は５重量部未
満の少量加えられただけでは、充分な効果が期待
できず、又20重量部を越えるような多量加えられ
た場合は、線膨張率が大きくなつてしまう。
本発明組成物１，２においては、他の成分と共
に、ポリメチルメタアクリレートを、塩化ビニル
系樹脂80乃至100重量部に対して、１乃至５重量
部加えることにより、線膨張率を大きくさせるこ
となく、塩素化ポリエチレンと共に、成形品の耐
衝撃性及び剛性等の物性を一層改良する。加工助
剤が全く加えられないか又は１重量部未満の少量
加えられただけでは充分な効果が期待できず、又
５重量部を越えるような多量加えられた場合は、
成形品の線膨張率が大きくなつてしまう。
本発明組成物１，２においては、他の成分と共
に、酸化マグネシウムを塩化ビニル系樹脂80乃至
100重量部に対して、0.03乃至３重量部加えるこ
とにより、耐候性及び耐衝撃性等を悪くさせるこ
となく、成形性を改良し、又金型の金属面に付着
したプレートウトを成形中に取り除き堆積付着物
が成形品の表面に流出したり、それによる物性低
下を防止する。酸化マグネシウムが全く加えられ
ないか又は0.03重量部未満の少量しか加えられた
だけでは充分な効果を期待することができず、又
３重量部を越えるような多量加えられた場合は、
耐衝撃性及び耐衝撃性が悪くなつてしまう。
本発明組成物２においては、他の成分と共に、
無機充填剤を、塩化ビニル系樹脂80乃至100重量
部に対して、５乃至50重量部加えることにより、
耐候性及び耐衝撃性を悪くさせることなく、成形
品の、剛性を改良し、温度変化により熱変形しに
くくする。無機充填剤が全く加えられないか又は
その添加量が５重量部未満の少量加えられただけ
では、充分な効果が期待できず、又50重量部を越
えるような多量加えられた場合は、耐衝撃性及び
耐候性が悪くなつてしまう。
（発明の効果）
本発明組成物１は、塩化ビニル系樹脂80乃至
100重量部に、エチレン−酢酸ビニル−塩化ビニ
ルグラフト共重合体５乃至50重量部と、ガラス短
繊維５乃至30重量部と、塩素化ポリエチレン５乃
至20重量部と、ポリメチルアクリレート１乃至５
重量部と、酸化マグネシウム0.05乃至３重量部と
を加えたものなあるので、成形品の、線膨張率が
小さくて温度変化による熱変形が起こりにくく、
而も抗張力、耐衝撃性の物性が優れており、且つ
成形性が極めて良く、成形品の表面状態が滑らか
であり、外観がよく、又これが起因して耐候性が
著しく改良され、屋外で使用した時に短時間の内
に白化する（チヨーキング）ことがなく、又金型
面に付着したプレートアウトを成形中に取り除き
堆積物が成形品の表面に流出したりすることな
く、それによる物性低下を防止し、又成形の長期
ランニングが可能である。
本発明組成物２は、塩化ビニル系樹脂80乃至
100重量部に、エチレン−酢酸ビニル−塩化ビニ
ルグラフト共重合体５乃至50重量部と、ガラス短
繊維５乃至30重量部と、塩素化ポリエチレン５乃
至20重量部と、ポリメチルアクリレート１乃至５
重量部と、酸化マグネシウム0.05乃至３重量部
と、無機充填剤５乃至50重量部とを加えりものな
ので、成形品の、線膨張率及び熱収縮率が小さく
て温度変化による熱変形が起こりにくく、而も抗
張力、耐衝撃性の物性が優れており、且つ成形性
が極めて良く、成形品の表面状態が滑らかであ
り、外観がよく、又これが起因して耐候性が著し
く改良され、屋外で使用した時に短時間の内に白
化する（チヨーキング）ことがなく、又金型面に
付着したプレートアウトを成形中に取り除き堆積
物が成形品の表面に流出したりすることなく、そ
れによる物性低下を防止し、又成形の長期ランニ
ングが可能である。
以下本発明を実施例により説明する。
実施例 １〜４
第１表に示す配合物〔ガラス短繊維は、長さ
200μ、表面がエポキシシランで処理されたもの
使用、又エチレン−酢酸ビニル−塩化ビニルグラ
フト共重合体（以下「EVA−VC」という）は、
EVA含量８重量％のもの使用）を混合機にて120
℃で６分間加熱混合し、この混合物をロール混練
機にて160℃で５分間混練して厚さ1.2mmのシート
状物を作り、このシート状物を粉砕して３mm角の
粉砕片を作り、この粉砕片を押出機、金型にて樹
脂温度180乃至185℃で押出して、厚さ1.2mmの薄
肉異形成形品を押出成形した。
成形品より試験片を切り出して、線膨張率、抗
張率、伸び、瀬撃強度、熱収縮率、耐候性及び成
形品中のガラス短繊維の長さを測定し、又成形品
中のガラス短繊維と樹脂との間の密着性を観察し
た。その結果を実施例１〜４として第１表に示
す。
比較例 １
第１表の比較例１の配合物を混合機にて良く混
合し、この混合物を押出機、金型にて樹脂温度
180乃至185℃で押出して、厚さ1.2mmの薄肉異形
成形品を押出成形した。その成形品より試験片を
切り出して、線膨張率、抗張力、伸び、熱収縮率
及び耐候性を測定した結果を比較例１として第１
表に併せて示す。
比較例 ２
第１表の比較例２の配合物（ガラス短繊維は、
長さ４〜６mmで、表面エポキシシランで処理され
たもの使用）を比較例１と同様の成形を試みた
が、成形性が悪く成形できなかつたので、第２表
に示す配合物を混合機にて常温で混合し、この混
合物をロール混練機にて190で５分間混練して厚
さ1.2mmのシート状物を作り、このシート状物を
切り出して、ハンドプレスにて、190℃50Kg／cm2
で２分間予熱後、190℃100Kg／cm2で１分間プレス
して1.3mmのシートを作製し、このシートより試
験片を切り出して実施例と同様の測定及び観察を
行つた結果を比較例２として第１表に併せて示
す。
尚、線膨張率については、ASTM：D696にて
測定した。抗張力及び伸びについては、
JISA5706にて測定した。衝撃強度については、
JISA5400にて測定した。熱収縮率については、
成形品よりその長手方向に長さ200mmの試験片を
切り出し３箇所に100mm間隔に線を入れ、この試
験片をギアーオーブンにて100℃15分間加熱後取
り出し室温に放置した後、線間の長さを測定し
て、もとの長さに対する収縮の度合（％）を算出
した。又耐候性については、JISA1415の条件よ
りも圧力4.5〜５Kgｆ／cm2に上げた促進条件にて
測定した。又成形品中のガラス短繊維と樹脂との
間の密着性は、試験片の断面を電子顕微鏡にて見
てガラス短繊維の周りの空隙の発生状態を観察す
ることにより判断した。
第１表からも明らかな如く、実施例１，２の場
合はいずれも、線膨張率が小さく、而も耐衝撃性
等の物性がガラス短繊維が分散されていない比較
例１の値に匹敵する程向上しており、又成形性は
1.2mmの薄肉成形品の成形が可能であり、成形品
の表面状態も滑らかで均一であり極めて良好であ
つた。又ガラス短繊維の周りには部分的に僅かに
極く小さい空隙が見られる程度で、ガラス短繊維
と樹脂との間が良く密着している様子が観察され
た。又耐候性もガラス短繊維が分散されていない
比較例１の値に匹敵する程向上しており、著しく
良かつた。
実施例３，４の場合は、更に熱収縮率が著しく
小さかつた。
尚、第１表からも明らかな如く、比較例１の場
合は線膨張率が著しく大きく温度変化により変形
しやすいものである。又比較例２の場合は、成形
性が悪く、薄肉異形成形品の成形ができず、又耐
衝撃性等の物性及び耐候性がとても実用に供する
ことができない程悪かつた。又ガラス短繊維の周
りには大きい空隙が見られ、ガラス短繊維と樹脂
との間は密着していなかつた。
(Industrial Application Field) The present invention is a vinyl chloride resin composition suitable for molded products having a small coefficient of linear expansion and excellent physical properties and appearance, especially thin-walled molded products such as rain gutters, decking materials, and window frames. Regarding. (Prior art) In recent years, molded products made of vinyl chloride resin, such as rain gutters made of hard vinyl chloride, have come into widespread use. During use, the longitudinal length may change due to changes in temperature, causing deformation or damage at the connection or fasteners, or parts directly exposed to sunlight may expand and bend. The drawback was that it was prone to rippling. Conventionally, as described in Japanese Patent Publication No. 53-21891, 100 parts by weight of a vinyl resin having a viscosity index of 50 to 180 and 10 to 60 parts by weight of an inorganic filler whose individual particles have an average diameter of 0.05 to 50μ have been used. extrusion compositions have been proposed having 1.5 to 5 parts by weight of lubricant and 5 to 40 parts by weight of glass fibers having a length of 4 to 6 mm.
It is difficult for the glass fibers to be uniformly dispersed in the resin, and the adhesion between the mixed glass fibers and the vinyl resin is poor, resulting in large voids around the glass fibers.
As a result, compared to the vinyl resin before glass fibers are added, the physical properties of the molded product such as impact resistance are significantly reduced, and the moldability is also significantly deteriorated, resulting in the surface condition of the molded product not being smooth. Not only does it have a poor appearance, but this also has the disadvantage of whitening within a short period of time when used outdoors. (Purpose of the Invention) In view of the above facts and as a result of intensive study, the present inventor has made the length of the short glass fibers extremely short and improved the adhesion between the short glass fibers and the resin. It was discovered that by adding a modifier, a processing aid to improve kneading during molding, and magnesium oxide to prevent plate-out during molding, it was possible to overcome the conventional drawbacks mentioned above. The invention has been made, and the present invention has a low coefficient of linear expansion, is resistant to thermal deformation, has excellent physical properties such as impact resistance, and has excellent moldability and weather resistance.
The object of the present invention is to provide a vinyl chloride resin composition suitable for molded products with smooth surfaces, particularly thin molded products such as rain gutters, decking materials, and window frames. (Summary of the Invention) The summary of the present invention is as follows: 1. Vinyl chloride resin 80 to
100 parts by weight, 5 to 50 parts by weight of ethylene-vinyl acetate-vinyl chloride graft copolymer, 5 to 30 parts by weight of short glass fibers, and 5 to 30 parts by weight of chlorinated polyethylene.
20 parts by weight, 1 to 5 parts by weight of polymethyl acrylate, and 0.05 to 3 parts by weight of magnesium oxide,
A vinyl chloride resin composition containing 0.05 to 3 parts by weight of magnesium oxide (hereinafter referred to as "composition 1 of the present invention") and a vinyl dichloride resin 80 to 100 parts by weight.
5 to 50 parts by weight of ethylene-vinyl acetate-vinyl chloride graft copolymer, 5 to 30 parts by weight of short glass fibers, and 5 to 20 parts by weight of chlorinated polyethylene.
1 to 5 parts by weight of polymethyl acrylate, 0.05 to 3 parts by weight of magnesium oxide, and 5 to 50 parts by weight of an inorganic filler (hereinafter referred to as "composition 2 of the present invention"). ). (Structure of the Invention) As the vinyl chloride resin used in the compositions 1 and 2 of the present invention, for example, polyvinyl chloride (PVC), polyvinylidene chloride, chlorinated polyvinyl chloride (chlorinated PVC), etc. are preferably used. used,
Among these, polyvinyl chloride (PVC) is particularly preferably used. The ethylene-vinyl acetate-vinyl chloride graft copolymer used in compositions 1 and 2 of the present invention is, for example, 5 to 60 parts by weight of an ethylene-vinyl acetate copolymer having a vinyl acetate content of about 10 to 20% by weight. A material obtained by graft-polymerizing 95 to 60 parts by weight of vinyl chloride and having an average degree of polymerization of 700 to 1,400 is preferably used. The short glass fibers used in the compositions 1 and 2 of the present invention include, for example, strands with a length of 0.05 to 3 mm.
Glass chops cut into pieces (when present in the molded product), pile-shaped pieces cut into lengths of 0.05 to 3 mm (when present in the molded product), etc. are preferably used, especially those with lengths of 0.05 to 3 mm. Glass chips cut to 3 mm (when present in the molded product) are particularly preferably used, and those whose surface has been treated with a coupling agent such as epoxy silane are also preferably used. The chlorinated polyethylene used in compositions 1 and 2 of the present invention improves the adhesion between the short glass fibers and the vinyl chloride resin by being added to the system, and improves the adhesion between the short glass fibers and the vinyl chloride resin. It keeps the voids small and improves the impact strength etc. of the molded product. As the magnesium oxide used in the compositions 1 and 2 of the present invention, commercially available magnesium oxides are generally suitably used because they have good compatibility with vinyl chloride resins. Examples of the inorganic filler used in the composition 2 of the present invention include calcium carbonate such as precipitated calcium carbonate, light calcium carbonate, and ultrafine calcium carbonate, silica such as silica, talc, diatomaceous earth, clay, and mica. Salts, alumina, etc. are preferably used, and among these, ultrafine calcium carbonate is particularly preferably used, and those surface-treated with organic acid salts are preferably used, and those with a particle size of 0.1μ or less are used. is preferably used. In the compositions 1 and 2 of the present invention, in addition to the above, stabilizers and pigments may be used in combination as necessary. In compositions 1 and 2 of the present invention, along with other components, based on 80 to 100 parts by weight of vinyl chloride resin,
By adding 5 to 50 parts by weight of the ethylene-vinyl acetate-vinyl chloride graft copolymer, the physical properties such as impact resistance and rigidity and weather resistance of the molded article are improved without increasing the coefficient of linear expansion. If the ethylene-vinyl acetate-vinyl chloride graft copolymer is not added at all or if it is added in a small amount of less than 5 parts by weight, a sufficient effect cannot be expected, and if it is added in a large amount exceeding 50 parts by weight. In this case, the linear expansion coefficient becomes large. In Compositions 1 and 2 of the present invention, short glass fibers are combined with vinyl chloride resin 80 to
By adding 5 to 30 parts by weight per 100 parts by weight, the coefficient of linear expansion of the molded product can be reduced, the rigidity can be increased, and thermal deformation caused by temperature changes can be reduced without deteriorating moldability and impact resistance. Make it difficult to do.
If short glass fibers are not added at all or only a small amount of less than 5 parts by weight is added, a sufficient effect cannot be expected, and if a large amount exceeding 30 parts by weight is added, The moldability deteriorates, the appearance of the molded product is not smooth, and the impact resistance and weather resistance deteriorate. In compositions 1 and 2 of the present invention, the coefficient of linear expansion can be increased by adding 5 to 20 parts by weight of the chlorinated polyethylene to 80 to 100 parts by weight of the vinyl chloride resin together with other components. It improves physical properties such as impact resistance and rigidity of molded products. If the modifier is not added at all or if it is added in a small amount (less than 5 parts by weight), a sufficient effect cannot be expected, and if it is added in a large amount (over 20 parts by weight), the coefficient of linear expansion will be large. I get used to it. In compositions 1 and 2 of the present invention, the coefficient of linear expansion can be increased by adding 1 to 5 parts by weight of polymethyl methacrylate to 80 to 100 parts by weight of the vinyl chloride resin, along with other components. Together with chlorinated polyethylene, it further improves the physical properties of molded products, such as impact resistance and rigidity. If the processing aid is not added at all or if it is added in a small amount of less than 1 part by weight, a sufficient effect cannot be expected, and if it is added in a large amount exceeding 5 parts by weight,
The coefficient of linear expansion of the molded product becomes large. In compositions 1 and 2 of the present invention, magnesium oxide is added to vinyl chloride resin 80 to
By adding 0.03 to 3 parts by weight per 100 parts by weight, moldability is improved without deteriorating weather resistance and impact resistance, and plateout adhering to the metal surface of the mold is removed during molding. Prevents deposits from flowing onto the surface of the molded product and deterioration of physical properties due to this. If magnesium oxide is not added at all or if only a small amount of less than 0.03 parts by weight is added, a sufficient effect cannot be expected, and if it is added in a large amount exceeding 3 parts by weight,
Impact resistance and shock resistance deteriorate. In the composition 2 of the present invention, along with other components,
By adding 5 to 50 parts by weight of an inorganic filler to 80 to 100 parts by weight of vinyl chloride resin,
To improve the rigidity of molded products and make them less susceptible to thermal deformation due to temperature changes without deteriorating weather resistance and impact resistance. If an inorganic filler is not added at all or if it is added in a small amount (less than 5 parts by weight), a sufficient effect cannot be expected, and if it is added in a large amount exceeding 50 parts by weight, the Impact resistance and weather resistance deteriorate. (Effect of the invention) The composition 1 of the present invention has a vinyl chloride resin of 80 to
100 parts by weight, 5 to 50 parts by weight of ethylene-vinyl acetate-vinyl chloride graft copolymer, 5 to 30 parts by weight of short glass fibers, 5 to 20 parts by weight of chlorinated polyethylene, and 1 to 5 parts by weight of polymethyl acrylate.
parts by weight and 0.05 to 3 parts by weight of magnesium oxide, so the linear expansion coefficient of the molded product is small and thermal deformation due to temperature changes is less likely to occur.
Moreover, it has excellent physical properties such as tensile strength and impact resistance, and has extremely good moldability, and the surface condition of the molded product is smooth and has a good appearance. It does not whiten in a short period of time (cheeking) when molded, and removes plate-out adhering to the mold surface during molding, preventing deposits from flowing out onto the surface of the molded product, thereby reducing physical properties. It also prevents molding from occurring and enables long-term molding runs. Composition 2 of the present invention has a vinyl chloride resin of 80 to
100 parts by weight, 5 to 50 parts by weight of ethylene-vinyl acetate-vinyl chloride graft copolymer, 5 to 30 parts by weight of short glass fibers, 5 to 20 parts by weight of chlorinated polyethylene, and 1 to 5 parts by weight of polymethyl acrylate.
Part by weight, 0.05 to 3 parts by weight of magnesium oxide, and 5 to 50 parts by weight of an inorganic filler, so the linear expansion coefficient and thermal contraction coefficient of the molded product are small, making it difficult for thermal deformation due to temperature changes to occur. Moreover, it has excellent physical properties such as tensile strength and impact resistance, and has extremely good moldability, and the surface condition of the molded product is smooth and has a good appearance. It does not whiten (cheeking) within a short period of time when used, and the plate-out adhering to the mold surface is removed during molding, and deposits do not flow out onto the surface of the molded product, resulting in a decrease in physical properties. It also prevents molding from occurring and enables long-term molding runs. The present invention will be explained below with reference to Examples. Examples 1 to 4 The formulations shown in Table 1 [short glass fibers were
200μ, surface treated with epoxy silane, and ethylene-vinyl acetate-vinyl chloride graft copolymer (hereinafter referred to as "EVA-VC").
8% by weight of EVA) in a mixer
Heat and mix at ℃ for 6 minutes, knead this mixture for 5 minutes at 160℃ using a roll kneader to make a sheet with a thickness of 1.2 mm, and crush this sheet to make crushed pieces of 3 mm square. The pulverized pieces were extruded using an extruder and a mold at a resin temperature of 180 to 185°C to extrusion mold a thin irregular shaped product with a thickness of 1.2 mm. A test piece was cut out from the molded product, and the coefficient of linear expansion, tensile modulus, elongation, shock strength, heat shrinkage rate, weather resistance, and length of short glass fibers in the molded product were measured. The adhesion between the short fibers and the resin was observed. The results are shown in Table 1 as Examples 1 to 4. Comparative Example 1 The formulation of Comparative Example 1 in Table 1 was mixed well in a mixer, and the mixture was heated to an extruder and a mold at the resin temperature.
Extrusion was carried out at 180 to 185°C to extrude and mold a thin profiled article with a thickness of 1.2 mm. A test piece was cut out from the molded product, and the linear expansion coefficient, tensile strength, elongation, heat shrinkage rate, and weather resistance were measured.
It is also shown in the table. Comparative Example 2 The formulation of Comparative Example 2 in Table 1 (short glass fibers were
I attempted to mold the same material as in Comparative Example 1 using a material with a length of 4 to 6 mm and whose surface was treated with epoxy silane, but the moldability was poor and it could not be molded. This mixture was kneaded at 190℃ for 5 minutes using a roll kneader to make a sheet with a thickness of 1.2 mm.The sheet was cut out and mixed at 190℃ with a hand press for 50 kg/kg. cm2
After preheating for 2 minutes at 190℃ and pressing at 100Kg/cm 2 for 1 minute to produce a 1.3mm sheet, a test piece was cut from this sheet and the same measurements and observations as in Example were performed.Comparative Example 2 It is also shown in Table 1. The coefficient of linear expansion was measured using ASTM: D696. Regarding tensile strength and elongation,
Measured according to JISA5706. Regarding impact strength,
Measured using JISA5400. Regarding heat shrinkage rate,
Cut out a test piece with a length of 200 mm in the longitudinal direction from the molded product, insert lines at 100 mm intervals in three places, heat the test piece in a gear oven at 100°C for 15 minutes, take it out, leave it at room temperature, and measure the length between the lines. The length was measured and the degree of shrinkage (%) relative to the original length was calculated. Weather resistance was measured under accelerated conditions with a pressure of 4.5 to 5 Kgf/cm 2 higher than the JISA1415 conditions. The adhesion between the short glass fibers and the resin in the molded article was determined by viewing the cross section of the test piece under an electron microscope and observing the state of voids around the short glass fibers. As is clear from Table 1, in both Examples 1 and 2, the coefficient of linear expansion is small, and physical properties such as impact resistance are comparable to those of Comparative Example 1 in which short glass fibers are not dispersed. It has improved as much as possible, and the moldability has improved as well.
It was possible to mold a 1.2 mm thin-walled molded product, and the surface condition of the molded product was smooth and uniform, which was extremely good. In addition, it was observed that the short glass fibers and the resin were in close contact with each other, with only very small voids partially visible around the short glass fibers. Furthermore, the weather resistance was improved to the extent that it was comparable to that of Comparative Example 1 in which short glass fibers were not dispersed, and was extremely good. In the case of Examples 3 and 4, the heat shrinkage rate was also extremely small. As is clear from Table 1, Comparative Example 1 has a significantly large coefficient of linear expansion and is easily deformed due to temperature changes. In the case of Comparative Example 2, the moldability was poor, making it impossible to mold a thin irregular shaped article, and the physical properties such as impact resistance and weather resistance were so poor that they could not be put to practical use. Also, large voids were observed around the short glass fibers, and there was no close contact between the short glass fibers and the resin.
【表】
◎；薄肉異形成形品の形状に成形でき、又成形品の表
面状態は滑らかで均一であつた。
×；薄肉異形成形品の形状に成形できなかつた。
[Table] ◎: It was possible to mold into the shape of a thin-walled irregularly shaped article, and the surface condition of the molded article was smooth and uniform.
×: It was not possible to mold the product into the shape of a thin-walled irregularly shaped article.
Claims (1)
レン−酢酸ビニル−塩化ビニルグラフト共重合体
５乃至50重量部と、ガラス短繊維５乃至30重量部
と、塩素化ポリエチレン５乃至20重量部と、ポリ
メチルメタアクリレート１乃至５重量部と、酸化
マグネシウム0.05乃至３重量部とを加えてなる塩
化ビニル系樹脂組成物。 ２ 塩化ビニル系樹脂80乃至100重量部に、エチ
レン−酢酸ビニル−塩化ビニルグラフト共重合体
５乃至50重量部と、ガラス短繊維５乃至30重量部
と、塩素化ポリエチレン５乃至20重量部と、ポリ
メチルメタアクリレート１乃至５重量部と、酸化
マグネシウム0.05乃至３重量部と、無機充填剤５
乃至50重量部とを加えてなる塩化ビニル系樹脂組
成物。[Scope of Claims] 1. 80 to 100 parts by weight of vinyl chloride resin, 5 to 50 parts by weight of ethylene-vinyl acetate-vinyl chloride graft copolymer, 5 to 30 parts by weight of short glass fibers, and 5 to 30 parts by weight of chlorinated polyethylene. A vinyl chloride resin composition comprising 20 to 20 parts by weight of polymethyl methacrylate, 1 to 5 parts by weight of polymethyl methacrylate, and 0.05 to 3 parts by weight of magnesium oxide. 2. 80 to 100 parts by weight of vinyl chloride resin, 5 to 50 parts by weight of ethylene-vinyl acetate-vinyl chloride graft copolymer, 5 to 30 parts by weight of short glass fibers, and 5 to 20 parts by weight of chlorinated polyethylene, 1 to 5 parts by weight of polymethyl methacrylate, 0.05 to 3 parts by weight of magnesium oxide, and 5 parts by weight of inorganic filler.
50 parts by weight of a vinyl chloride resin composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3179184A JPS60177058A (en) | 1984-02-21 | 1984-02-21 | Vinyl chloride resin composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3179184A JPS60177058A (en) | 1984-02-21 | 1984-02-21 | Vinyl chloride resin composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60177058A JPS60177058A (en) | 1985-09-11 |
| JPH0311304B2 true JPH0311304B2 (en) | 1991-02-15 |
Family
ID=12340888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3179184A Granted JPS60177058A (en) | 1984-02-21 | 1984-02-21 | Vinyl chloride resin composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60177058A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108384264A (en) * | 2018-02-06 | 2018-08-10 | 芜湖海杉新材料科技有限公司 | A kind of wear-resisting applicability skirting |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5293455A (en) * | 1976-01-29 | 1977-08-05 | Ugine Kuhlmann | Extrusion molding compositions |
| JPS5780445A (en) * | 1980-11-08 | 1982-05-20 | Kanegafuchi Chem Ind Co Ltd | Thermoplastic resin composition |
| JPS58134140A (en) * | 1982-01-29 | 1983-08-10 | デイナミ−ト・ノ−ベル・アクチエンゲゼルシヤフト | Glass fiber reinforced polyvinyl chloride composition and manufacture of formed body therefrom |
-
1984
- 1984-02-21 JP JP3179184A patent/JPS60177058A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5293455A (en) * | 1976-01-29 | 1977-08-05 | Ugine Kuhlmann | Extrusion molding compositions |
| JPS5780445A (en) * | 1980-11-08 | 1982-05-20 | Kanegafuchi Chem Ind Co Ltd | Thermoplastic resin composition |
| JPS58134140A (en) * | 1982-01-29 | 1983-08-10 | デイナミ−ト・ノ−ベル・アクチエンゲゼルシヤフト | Glass fiber reinforced polyvinyl chloride composition and manufacture of formed body therefrom |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60177058A (en) | 1985-09-11 |
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