JPH03229732A - Production of styrenic resin foam - Google Patents
Production of styrenic resin foamInfo
- Publication number
- JPH03229732A JPH03229732A JP2222490A JP2222490A JPH03229732A JP H03229732 A JPH03229732 A JP H03229732A JP 2222490 A JP2222490 A JP 2222490A JP 2222490 A JP2222490 A JP 2222490A JP H03229732 A JPH03229732 A JP H03229732A
- Authority
- JP
- Japan
- Prior art keywords
- blowing agent
- styrenic resin
- resin foam
- foam
- producing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000006260 foam Substances 0.000 title claims abstract description 19
- 229920001890 Novodur Polymers 0.000 title claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 239000004604 Blowing Agent Substances 0.000 claims abstract description 17
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 10
- 150000002430 hydrocarbons Chemical class 0.000 claims abstract description 10
- ZQBFAOFFOQMSGJ-UHFFFAOYSA-N hexafluorobenzene Chemical compound FC1=C(F)C(F)=C(F)C(F)=C1F ZQBFAOFFOQMSGJ-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000004215 Carbon black (E152) Substances 0.000 claims abstract description 7
- -1 perfluoroalkyl hydride Chemical class 0.000 claims abstract description 5
- WACNXHCZHTVBJM-UHFFFAOYSA-N 1,2,3,4,5-pentafluorobenzene Chemical compound FC1=CC(F)=C(F)C(F)=C1F WACNXHCZHTVBJM-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims abstract description 4
- 229960004692 perflenapent Drugs 0.000 claims abstract description 4
- 229960004624 perflexane Drugs 0.000 claims abstract description 4
- ZJIJAJXFLBMLCK-UHFFFAOYSA-N perfluorohexane Chemical compound FC(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F ZJIJAJXFLBMLCK-UHFFFAOYSA-N 0.000 claims abstract description 4
- NJCBUSHGCBERSK-UHFFFAOYSA-N perfluoropentane Chemical compound FC(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F NJCBUSHGCBERSK-UHFFFAOYSA-N 0.000 claims abstract description 4
- 125000001153 fluoro group Chemical group F* 0.000 claims abstract description 3
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims abstract 2
- 125000001183 hydrocarbyl group Chemical group 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 7
- PXBRQCKWGAHEHS-UHFFFAOYSA-N dichlorodifluoromethane Chemical compound FC(F)(Cl)Cl PXBRQCKWGAHEHS-UHFFFAOYSA-N 0.000 description 6
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 4
- 239000000178 monomer Substances 0.000 description 4
- 239000004338 Dichlorodifluoromethane Substances 0.000 description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- 235000019404 dichlorodifluoromethane Nutrition 0.000 description 3
- AFABGHUZZDYHJO-UHFFFAOYSA-N dimethyl butane Natural products CCCC(C)C AFABGHUZZDYHJO-UHFFFAOYSA-N 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- MYRTYDVEIRVNKP-UHFFFAOYSA-N 1,2-Divinylbenzene Chemical compound C=CC1=CC=CC=C1C=C MYRTYDVEIRVNKP-UHFFFAOYSA-N 0.000 description 2
- HNRMPXKDFBEGFZ-UHFFFAOYSA-N 2,2-dimethylbutane Chemical compound CCC(C)(C)C HNRMPXKDFBEGFZ-UHFFFAOYSA-N 0.000 description 2
- ZFFMLCVRJBZUDZ-UHFFFAOYSA-N 2,3-dimethylbutane Chemical compound CC(C)C(C)C ZFFMLCVRJBZUDZ-UHFFFAOYSA-N 0.000 description 2
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 2
- 235000013539 calcium stearate Nutrition 0.000 description 2
- 239000008116 calcium stearate Substances 0.000 description 2
- NEHMKBQYUWJMIP-UHFFFAOYSA-N chloromethane Chemical compound ClC NEHMKBQYUWJMIP-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 2
- 239000004088 foaming agent Substances 0.000 description 2
- QWTDNUCVQCZILF-UHFFFAOYSA-N isopentane Chemical compound CCC(C)C QWTDNUCVQCZILF-UHFFFAOYSA-N 0.000 description 2
- 239000000454 talc Substances 0.000 description 2
- 229910052623 talc Inorganic materials 0.000 description 2
- VOOXKKSIKFHMTJ-UHFFFAOYSA-N 1,1-dichloro-1,2,2-trifluoropropane Chemical compound CC(F)(F)C(F)(Cl)Cl VOOXKKSIKFHMTJ-UHFFFAOYSA-N 0.000 description 1
- FRCHKSNAZZFGCA-UHFFFAOYSA-N 1,1-dichloro-1-fluoroethane Chemical compound CC(F)(Cl)Cl FRCHKSNAZZFGCA-UHFFFAOYSA-N 0.000 description 1
- DDMOUSALMHHKOS-UHFFFAOYSA-N 1,2-dichloro-1,1,2,2-tetrafluoroethane Chemical compound FC(F)(Cl)C(F)(F)Cl DDMOUSALMHHKOS-UHFFFAOYSA-N 0.000 description 1
- RFCAUADVODFSLZ-UHFFFAOYSA-N 1-Chloro-1,1,2,2,2-pentafluoroethane Chemical compound FC(F)(F)C(F)(F)Cl RFCAUADVODFSLZ-UHFFFAOYSA-N 0.000 description 1
- FXSNEEBOGAOVIM-UHFFFAOYSA-N 1-chloro-1,2,2,3,3-pentafluoropropane Chemical compound FC(F)C(F)(F)C(F)Cl FXSNEEBOGAOVIM-UHFFFAOYSA-N 0.000 description 1
- NRAYRSGXIOSRHV-UHFFFAOYSA-N 1-chloro-1,2,2,3-tetrafluoropropane Chemical compound FCC(F)(F)C(F)Cl NRAYRSGXIOSRHV-UHFFFAOYSA-N 0.000 description 1
- SBYMUDUGTIKLCR-UHFFFAOYSA-N 2-chloroethenylbenzene Chemical compound ClC=CC1=CC=CC=C1 SBYMUDUGTIKLCR-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- ZAFNJMIOTHYJRJ-UHFFFAOYSA-N Diisopropyl ether Chemical compound CC(C)OC(C)C ZAFNJMIOTHYJRJ-UHFFFAOYSA-N 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- XYLMUPLGERFSHI-UHFFFAOYSA-N alpha-Methylstyrene Chemical compound CC(=C)C1=CC=CC=C1 XYLMUPLGERFSHI-UHFFFAOYSA-N 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 235000019406 chloropentafluoroethane Nutrition 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- VHPYNVZYZFYVII-UHFFFAOYSA-N fluoroethane Chemical compound [CH2]CF VHPYNVZYZFYVII-UHFFFAOYSA-N 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 150000008282 halocarbons Chemical class 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920005990 polystyrene resin Polymers 0.000 description 1
- HJWLCRVIBGQPNF-UHFFFAOYSA-N prop-2-enylbenzene Chemical compound C=CCC1=CC=CC=C1 HJWLCRVIBGQPNF-UHFFFAOYSA-N 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000005437 stratosphere Substances 0.000 description 1
- 125000003011 styrenyl group Chemical group [H]\C(*)=C(/[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 1
- CYRMSUTZVYGINF-UHFFFAOYSA-N trichlorofluoromethane Chemical compound FC(Cl)(Cl)Cl CYRMSUTZVYGINF-UHFFFAOYSA-N 0.000 description 1
- 229940029284 trichlorofluoromethane Drugs 0.000 description 1
- 239000005436 troposphere Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 239000010456 wollastonite Substances 0.000 description 1
- 229910052882 wollastonite Inorganic materials 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野］
本発明は、スチレン系樹脂発泡体の製造方法に関するも
のであり、更に詳しくは新規な発泡剤を用いたスチレン
系樹脂発泡体の製造方法に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for producing a styrenic resin foam, and more particularly to a method for producing a styrenic resin foam using a novel blowing agent. It is something.
［従来の技術］
スチレン系樹脂の発泡には、毒性が少なく、不燃性で、
化学的に安定なジクロロジフルオロメタン（Ｒ１２１等
のフッ素化炭化水素系化合物（以下単にフロンという）
が用いられてきた。[Prior art] Styrenic resin foaming has low toxicity, nonflammability,
Fluorinated hydrocarbon compounds such as chemically stable dichlorodifluoromethane (R121 (hereinafter simply referred to as fluorocarbons)
has been used.
［発明が解決しようとする課題］
化学的に特に安定なＲ１２は対流圏内での寿命が長（、
拡散して成層圏に達し、ここで太陽光線により分解して
発生する塩素ラジカルがオゾンと連鎖反応を起こし、オ
ゾン層を破壊するとのことから、これら従来のフロンの
使用規制が実施されることとなった。このため、これら
の従来のフロンに変わり、オゾン層を破壊しにくい代替
フロンの探索が活発に行なわれている。[Problem to be solved by the invention] R12, which is particularly chemically stable, has a long life in the troposphere (
These conventional regulations on the use of fluorocarbons have been implemented because they diffuse and reach the stratosphere, where they are decomposed by sunlight and generated chlorine radicals that cause a chain reaction with ozone and destroy the ozone layer. Ta. For this reason, there is active search for alternative fluorocarbons that are less likely to deplete the ozone layer in place of these conventional fluorocarbons.
本発明は、従来のフロンが有しているｆ！れた特性を満
足しながら代替フロンとして使用できるオゾン層を破壊
しにくい新規なフロンを必須成分として含む発泡剤を用
いたスチレン系樹脂発泡体の製造方法を提供することを
目的とするものである。The present invention provides f! The purpose of this invention is to provide a method for producing styrenic resin foam using a foaming agent containing as an essential component a new fluorocarbon that does not easily destroy the ozone layer and can be used as a fluorocarbon substitute while satisfying the desired characteristics. .
［課題を解決するための手段］
本発明は、スチレン系樹脂と発泡剤を高温高圧下で混合
し、低圧帯域に押し出し、スチレン系樹脂発泡体を製造
する方法において、発泡剤として、水素原子の一部また
は全部をフッ素原子で置き換えたフッ素化炭化水素を必
須成分として用いることを特徴とするスチレン系樹脂弁
〆包体の製造方法を新規に提供するものである。[Means for Solving the Problems] The present invention provides a method for producing a styrenic resin foam by mixing a styrenic resin and a blowing agent under high temperature and high pressure and extruding the mixture into a low pressure zone. The present invention provides a novel method for producing a styrene-based resin valve envelope, which is characterized in that a fluorinated hydrocarbon in which part or all of fluorine atoms are replaced is used as an essential component.
この発泡剤としては一般式
％式％
］
２に＋２、ｍ、４２≧１．に；二重結合の数］で表わさ
れる弗素化炭化水素から選ばれる少な（とも一種が好ま
しい。具体的には、パーフルオロペンタン、パーフルオ
ロヘキサン、パーフルオロベンゼン、ペンタフルオロベ
ンゼン、ＣｓＦ＋１Ｈ，Ｃ４ＦＪ等のパーフルオロアル
キルハイドライド、Ｈ（ＣＦ、）４Ｈ等のジヒドロパー
フルオロアルカンから選ばれる少なくとも一種の弗素化
炭化水素を挙げることができる。This foaming agent has the general formula %] 2 +2, m, 42≧1. ; number of double bonds] selected from fluorinated hydrocarbons (both are preferably one type. Specifically, perfluoropentane, perfluorohexane, perfluorobenzene, pentafluorobenzene, CsF+1H, C4FJ, etc. Examples include at least one fluorinated hydrocarbon selected from perfluoroalkyl hydrides, dihydroperfluoroalkanes such as H(CF, )4H, and the like.
本発明のスチレン系樹脂発泡体の製造方法において用い
る発泡剤は、従来のＲ１２等のフロンと同等の特性を有
し、同じ使い方ができ、従来技術の大幅な変更を要しな
いこと等の利点がある。The blowing agent used in the method for producing styrenic resin foam of the present invention has the same characteristics as conventional fluorocarbons such as R12, can be used in the same way, and has the advantages of not requiring major changes to conventional technology. be.
本発明における発泡剤の量は、特に限定されることはな
いが、スチレン系樹脂１００重量部に対して０．１重量
部乃至５０重量部使用することが好ましい。The amount of the blowing agent in the present invention is not particularly limited, but it is preferably used in an amount of 0.1 parts by weight to 50 parts by weight per 100 parts by weight of the styrene resin.
本発明の発泡剤には、必要に応じてその他の成分を更に
添加混合することができる。例えば、プロパン、ブタン
、ペンタン、イソペンタン、ヘキサン、イソヘキサン、
ネオヘキサン、ヘプタン、イソへブタン、２，３−ジメ
チルブタン、シクロペンクン等の炭化水素類、クロロメ
タン、ジクロロメタン等のハロゲン化炭化水素類、イソ
プロピルエーテル等のエーテル類、そのイ也、トリクロ
ロフルオロメタン（Ｒｌｌｌ 、ジクロロジフルオロメ
タン（Ｒ１２１、１，１，２−トリクロロ−１，２，２
−１−リフルオロエタン（Ｒ１１３）、１．２−ジクロ
ロ−１，１，２，２−テトラフルオロエタン（Ｒ１１４
）、モノクロロペンタフルオロエタン（Ｒ１１５）、２
．２ジクロロ−１，１，１−１−リフルオロエタン（Ｒ
１２３）、１．２−ジクロロ−１，１，２−トー１／フ
ルオロエタン（Ｒ１２３ａｌ 、 １．１−ジクロロ−
１−フルオロエタン（Ｒ１４１ｂ）、 ３．３−ジクロ
ロ−１，１，１，２，２−ペンタフルオロプロパン（Ｒ
２２５ｃａｌ、１．３−ジクロロ−１，ｌ、 ２゜２．
３−ペンタフルオロプロパン（Ｒ２２５ｃｂ）、３−ク
ロロ−１，Ｉ、 ２．２−テトラフルオロプロパン（Ｒ
２４４ｃａ）、１−クロロ−１，２，２，３−テトラフ
ルオロプロパン（Ｒ２４４ｃｂｌ、 ３−クロロ−１，
１，２，２，３−ペンタフルオロプロパン（Ｒ２３５ｃ
ａ）、１．１−ジクロロ−１，２，２−トリフルオロプ
ロパン（Ｒ２４３ｃｃ）等の塩素化フッ素化炭化水素類
等を１種以上適宜添加することができる。Other components may be further added to the blowing agent of the present invention as needed. For example, propane, butane, pentane, isopentane, hexane, isohexane,
Hydrocarbons such as neohexane, heptane, isohbutane, 2,3-dimethylbutane, and cyclopenkune; halogenated hydrocarbons such as chloromethane and dichloromethane; ethers such as isopropyl ether; trichlorofluoromethane ( Rllll, dichlorodifluoromethane (R121, 1,1,2-trichloro-1,2,2
-1-lifluoroethane (R113), 1,2-dichloro-1,1,2,2-tetrafluoroethane (R114
), monochloropentafluoroethane (R115), 2
．． 2dichloro-1,1,1-1-lifluoroethane (R
123), 1,2-dichloro-1,1,2-to-1/fluoroethane (R123al, 1,1-dichloro-
1-fluoroethane (R141b), 3.3-dichloro-1,1,1,2,2-pentafluoropropane (R
225 cal, 1,3-dichloro-1,1, 2゜2.
3-pentafluoropropane (R225cb), 3-chloro-1,I, 2,2-tetrafluoropropane (R
244ca), 1-chloro-1,2,2,3-tetrafluoropropane (R244cbl, 3-chloro-1,
1,2,2,3-pentafluoropropane (R235c
a), one or more chlorinated fluorinated hydrocarbons such as 1,1-dichloro-1,2,2-trifluoropropane (R243cc) can be added as appropriate.
本発明におけるスチレン系樹脂とは、スチレン系単量体
の重合体又は共重合体、スチレン系単量体と他の単量体
との共重合体である。ここで、スチレン系単量体とは、
スチレン、α−メチルスチレン、ビニルトルエン、クロ
ルスチレン等であり、他の単量体としては、ジビニルベ
ンゼン、アクリロニトリル、メチルメタクリレート等の
ビニル系単量体等である。The styrenic resin in the present invention is a polymer or copolymer of a styrene monomer, or a copolymer of a styrene monomer and another monomer. Here, the styrenic monomer is
Styrene, α-methylstyrene, vinyltoluene, chlorostyrene, etc., and other monomers include vinyl monomers such as divinylbenzene, acrylonitrile, methyl methacrylate, etc.
さらに、本発明においては、シリカ、タルク、珪酸カル
シウム、ワラストナイト、カオリン、マイカ、ステアリ
ン酸カルシウム等の各種添加剤を用いることもできる。Furthermore, various additives such as silica, talc, calcium silicate, wollastonite, kaolin, mica, and calcium stearate can also be used in the present invention.
［実施例Ｊ 以下に本発明の実施例及び比較例を示す。[Example J Examples and comparative examples of the present invention are shown below.
実施例１〜１４及び比較例１〜２は、３０ｍｍ直径を有
する単軸スクリュー型押出接を用いて発泡体をつくった
。Examples 1-14 and Comparative Examples 1-2 produced foams using a single screw type extrusion welding having a diameter of 30 mm.
この押出機のスクリューは、フィード領域、圧縮・溶融
領域、計量領域及び混合領域から成っている。計量領域
と混合領域の間の押出機バーレルには液体発泡剤用の注
入口が備えられている。この注入口には、発泡剤を注入
するために、高圧定容量ポンプが接続されている。押出
機の放出端は、口径５ｍｍの丸い孔を有する口金を備え
ている。ポリスチレン樹脂（三菱モンサンド製 ダイヤ
レックスＨＨ１０２） １００重量部に対し、添加剤と
してステアリン酸カルシュウム０．１重量部及びタルク
０．５重量部を、■ミキサーにて混合し、上記押出機の
ホッパーより供給した。一方、各種発泡剤を上記高圧定
容量ポンプを用いて、押出機バーレルの注入口より一定
量注入し、押出機内の高圧・高温下において、樹脂と発
泡剤を混合し、口金より押出発泡した。The extruder screw consists of a feed zone, a compression/melting zone, a metering zone, and a mixing zone. The extruder barrel between the metering area and the mixing area is equipped with an inlet for liquid blowing agent. A high pressure constant volume pump is connected to this inlet for injecting the blowing agent. The discharge end of the extruder is equipped with a mouthpiece having a round hole with a diameter of 5 mm. 0.1 part by weight of calcium stearate and 0.5 part by weight of talc as additives are mixed with 100 parts by weight of polystyrene resin (Dialex HH102 manufactured by Mitsubishi Monsando) in a mixer and supplied from the hopper of the extruder. did. On the other hand, a fixed amount of various blowing agents was injected from the injection port of the extruder barrel using the above-mentioned high-pressure constant volume pump, and under high pressure and high temperature inside the extruder, the resin and blowing agent were mixed and extruded and foamed from the nozzle.
表１において発泡剤には、パーフルオロペンタン、パー
フルオロヘキサン、パーフルオロベンゼン、ペンタフル
オロベンゼン、ＣｓＦ＋＋Ｈ−Ｃ，Ｆ、Ｈ％Ｈ（ＣＦ２
）、Ｈｌ及びジクロロジフルオロメタン（Ｒ１２）を用
いた。In Table 1, blowing agents include perfluoropentane, perfluorohexane, perfluorobenzene, pentafluorobenzene, CsF++H-C,F, H%H (CF2
), Hl and dichlorodifluoromethane (R12) were used.
発泡性を評価するため従来のフロンを用いて発泡体を製
造し、これとの比較を行なった。表１における発泡体表
面とは、発泡体の表面シワ、凹凸等を比較し、従来品と
遜色ないものを○印とした。発泡体形状とは、発泡体断
面を拡大鏡により肉眼で観察し、気泡の独立性、気泡の
大きさの均−性等が、従来品と遜色ないものを○印とし
た。In order to evaluate the foamability, a foam was manufactured using conventional fluorocarbons and compared with this. Regarding the foam surface in Table 1, the surface wrinkles, unevenness, etc. of the foam were compared, and those comparable to conventional products were marked with a circle. The shape of the foam was determined by observing the cross section of the foam with the naked eye using a magnifying glass, and the foam was marked with a circle if the independence of the bubbles, the uniformity of the bubble size, etc. were comparable to conventional products.
表
［発明の効果］
本発明のスチレン系樹脂発泡体の製造方法において用い
る発泡剤は、従来のフロン類が有している優れた特性を
満足し、従来のフロンと同じ使い方でき、従来技術の大
幅な変更を要しない等の利点がある。Table [Effects of the Invention] The blowing agent used in the method for producing styrenic resin foam of the present invention satisfies the excellent properties of conventional fluorocarbons, can be used in the same way as conventional fluorocarbons, and is superior to conventional fluorocarbons. It has the advantage of not requiring major changes.
Claims (1)
圧帯域に押し出し、スチレン系樹脂発泡体を製造する方
法において、発泡剤として、水素原子の一部または全部
をフッ素原子で置き換えたフッ素化炭化水素を使用する
ことを特徴とするスチレン系樹脂発泡体の製造方法。 ２、フッ素化炭化水素がパーフルオロペンタン、パーフ
ルオロヘキサン、パーフルオロベンゼン、ペンタフルオ
ロベンゼン、パーフルオロアルキルハイドライド、ジヒ
ドロパーフルオロアルカンから選ばれる少なくとも一種
のフッ素化炭化水素である請求項１に記載の製造方法。[Claims] 1. A method for producing a styrenic resin foam by mixing a styrenic resin and a blowing agent under high temperature and high pressure and extruding the mixture into a low pressure zone, in which some or all of the hydrogen atoms are used as the blowing agent. A method for producing a styrenic resin foam, characterized by using a fluorinated hydrocarbon substituted with fluorine atoms. 2. The fluorinated hydrocarbon according to claim 1, wherein the fluorinated hydrocarbon is at least one fluorinated hydrocarbon selected from perfluoropentane, perfluorohexane, perfluorobenzene, pentafluorobenzene, perfluoroalkyl hydride, and dihydroperfluoroalkane. Production method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2222490A JPH03229732A (en) | 1990-02-02 | 1990-02-02 | Production of styrenic resin foam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2222490A JPH03229732A (en) | 1990-02-02 | 1990-02-02 | Production of styrenic resin foam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03229732A true JPH03229732A (en) | 1991-10-11 |
Family
ID=12076832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2222490A Pending JPH03229732A (en) | 1990-02-02 | 1990-02-02 | Production of styrenic resin foam |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03229732A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993010203A1 (en) * | 1991-11-19 | 1993-05-27 | Daikin Industries, Ltd. | Refrigerant comprising octafluorobutane |
| WO1995018176A1 (en) * | 1993-12-29 | 1995-07-06 | Minnesota Mining And Manufacturing Company | Foamable composition containing unsaturated perfluorinated blowing agent |
| US5632928A (en) * | 1995-05-31 | 1997-05-27 | E. I. Du Pont De Nemours And Company | Azeotrope (like) compositions with octafluorobutane, optionally chlorinated, and either perfluorodimethylcyclobutane or perfluorohexane |
-
1990
- 1990-02-02 JP JP2222490A patent/JPH03229732A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993010203A1 (en) * | 1991-11-19 | 1993-05-27 | Daikin Industries, Ltd. | Refrigerant comprising octafluorobutane |
| WO1995018176A1 (en) * | 1993-12-29 | 1995-07-06 | Minnesota Mining And Manufacturing Company | Foamable composition containing unsaturated perfluorinated blowing agent |
| US5631306A (en) * | 1993-12-29 | 1997-05-20 | Minnesota Mining And Manufacturing Company | Foamable composition containing unsaturated perfluorochemical blowing agent |
| US5632928A (en) * | 1995-05-31 | 1997-05-27 | E. I. Du Pont De Nemours And Company | Azeotrope (like) compositions with octafluorobutane, optionally chlorinated, and either perfluorodimethylcyclobutane or perfluorohexane |
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