JPH01172445A - Acrylate elastomer composition - Google Patents
Acrylate elastomer compositionInfo
- Publication number
- JPH01172445A JPH01172445A JP33015787A JP33015787A JPH01172445A JP H01172445 A JPH01172445 A JP H01172445A JP 33015787 A JP33015787 A JP 33015787A JP 33015787 A JP33015787 A JP 33015787A JP H01172445 A JPH01172445 A JP H01172445A
- Authority
- JP
- Japan
- Prior art keywords
- acrylate
- elastomer
- acrylic elastomer
- elastomer composition
- composition
- 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
- 239000000203 mixture Substances 0.000 title claims abstract description 16
- 229920001971 elastomer Polymers 0.000 title abstract description 10
- 239000000806 elastomer Substances 0.000 title abstract description 9
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 title abstract 5
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 9
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 9
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 9
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims abstract description 8
- 150000001451 organic peroxides Chemical class 0.000 claims abstract description 7
- 229920000800 acrylic rubber Polymers 0.000 claims description 26
- 229920000058 polyacrylate Polymers 0.000 claims description 26
- 239000002184 metal Substances 0.000 abstract description 14
- 229910052751 metal Inorganic materials 0.000 abstract description 14
- -1 alkoxyalkyl acrylate Chemical compound 0.000 abstract description 11
- 238000005260 corrosion Methods 0.000 abstract description 10
- 230000007797 corrosion Effects 0.000 abstract description 10
- 238000002156 mixing Methods 0.000 abstract description 7
- 239000000178 monomer Substances 0.000 abstract description 7
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 abstract description 4
- 238000004073 vulcanization Methods 0.000 abstract description 4
- 125000005250 alkyl acrylate group Chemical group 0.000 abstract description 3
- 150000001993 dienes Chemical class 0.000 abstract description 3
- 239000004342 Benzoyl peroxide Substances 0.000 abstract description 2
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 abstract description 2
- 235000019400 benzoyl peroxide Nutrition 0.000 abstract description 2
- 235000011116 calcium hydroxide Nutrition 0.000 abstract 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 abstract 1
- 239000005977 Ethylene Substances 0.000 abstract 1
- 230000005764 inhibitory process Effects 0.000 abstract 1
- 125000002348 vinylic group Chemical group 0.000 abstract 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 150000002739 metals Chemical class 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- ZSWFCLXCOIISFI-UHFFFAOYSA-N cyclopentadiene Chemical compound C1C=CC=C1 ZSWFCLXCOIISFI-UHFFFAOYSA-N 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 229910000975 Carbon steel Inorganic materials 0.000 description 3
- 239000010962 carbon steel Substances 0.000 description 3
- 238000004132 cross linking Methods 0.000 description 3
- 239000003431 cross linking reagent Substances 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 238000007789 sealing Methods 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
- UZKWTJUDCOPSNM-UHFFFAOYSA-N 1-ethenoxybutane Chemical compound CCCCOC=C UZKWTJUDCOPSNM-UHFFFAOYSA-N 0.000 description 2
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 2
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- 239000006057 Non-nutritive feed additive Substances 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 125000004183 alkoxy alkyl group Chemical group 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000002845 discoloration Methods 0.000 description 2
- 125000003700 epoxy group Chemical group 0.000 description 2
- FJKIXWOMBXYWOQ-UHFFFAOYSA-N ethenoxyethane Chemical compound CCOC=C FJKIXWOMBXYWOQ-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000012778 molding material Substances 0.000 description 2
- 239000004014 plasticizer Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- WRXCBRHBHGNNQA-UHFFFAOYSA-N (2,4-dichlorobenzoyl) 2,4-dichlorobenzenecarboperoxoate Chemical compound ClC1=CC(Cl)=CC=C1C(=O)OOC(=O)C1=CC=C(Cl)C=C1Cl WRXCBRHBHGNNQA-UHFFFAOYSA-N 0.000 description 1
- OJOWICOBYCXEKR-KRXBUXKQSA-N (5e)-5-ethylidenebicyclo[2.2.1]hept-2-ene Chemical compound C1C2C(=C/C)/CC1C=C2 OJOWICOBYCXEKR-KRXBUXKQSA-N 0.000 description 1
- PMJHHCWVYXUKFD-SNAWJCMRSA-N (E)-1,3-pentadiene Chemical compound C\C=C\C=C PMJHHCWVYXUKFD-SNAWJCMRSA-N 0.000 description 1
- NALFRYPTRXKZPN-UHFFFAOYSA-N 1,1-bis(tert-butylperoxy)-3,3,5-trimethylcyclohexane Chemical compound CC1CC(C)(C)CC(OOC(C)(C)C)(OOC(C)(C)C)C1 NALFRYPTRXKZPN-UHFFFAOYSA-N 0.000 description 1
- PGRNEGLBSNLPNP-UHFFFAOYSA-N 1,6-dichloro-3-methylhex-1-ene Chemical compound ClC=CC(C)CCCCl PGRNEGLBSNLPNP-UHFFFAOYSA-N 0.000 description 1
- SDRZFSPCVYEJTP-UHFFFAOYSA-N 1-ethenylcyclohexene Chemical compound C=CC1=CCCCC1 SDRZFSPCVYEJTP-UHFFFAOYSA-N 0.000 description 1
- PPWUTZVGSFPZOC-UHFFFAOYSA-N 1-methyl-2,3,3a,4-tetrahydro-1h-indene Chemical compound C1C=CC=C2C(C)CCC21 PPWUTZVGSFPZOC-UHFFFAOYSA-N 0.000 description 1
- ODBCKCWTWALFKM-UHFFFAOYSA-N 2,5-bis(tert-butylperoxy)-2,5-dimethylhex-3-yne Chemical compound CC(C)(C)OOC(C)(C)C#CC(C)(C)OOC(C)(C)C ODBCKCWTWALFKM-UHFFFAOYSA-N 0.000 description 1
- DMWVYCCGCQPJEA-UHFFFAOYSA-N 2,5-bis(tert-butylperoxy)-2,5-dimethylhexane Chemical compound CC(C)(C)OOC(C)(C)CCC(C)(C)OOC(C)(C)C DMWVYCCGCQPJEA-UHFFFAOYSA-N 0.000 description 1
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 description 1
- KWIPUXXIFQQMKN-UHFFFAOYSA-N 2-azaniumyl-3-(4-cyanophenyl)propanoate Chemical compound OC(=O)C(N)CC1=CC=C(C#N)C=C1 KWIPUXXIFQQMKN-UHFFFAOYSA-N 0.000 description 1
- 125000001731 2-cyanoethyl group Chemical group [H]C([H])(*)C([H])([H])C#N 0.000 description 1
- FWWXYLGCHHIKNY-UHFFFAOYSA-N 2-ethoxyethyl prop-2-enoate Chemical compound CCOCCOC(=O)C=C FWWXYLGCHHIKNY-UHFFFAOYSA-N 0.000 description 1
- 125000004200 2-methoxyethyl group Chemical group [H]C([H])([H])OC([H])([H])C([H])([H])* 0.000 description 1
- CJSBUWDGPXGFGA-UHFFFAOYSA-N 4-methylpenta-1,3-diene Chemical compound CC(C)=CC=C CJSBUWDGPXGFGA-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 241000156978 Erebia Species 0.000 description 1
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 description 1
- 241001311547 Patina Species 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 229940090948 ammonium benzoate Drugs 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- BXIQXYOPGBXIEM-UHFFFAOYSA-N butyl 4,4-bis(tert-butylperoxy)pentanoate Chemical compound CCCCOC(=O)CCC(C)(OOC(C)(C)C)OOC(C)(C)C BXIQXYOPGBXIEM-UHFFFAOYSA-N 0.000 description 1
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- YACLQRRMGMJLJV-UHFFFAOYSA-N chloroprene Chemical compound ClC(=C)C=C YACLQRRMGMJLJV-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000005745 ethoxymethyl group Chemical group [H]C([H])([H])C([H])([H])OC([H])([H])* 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- AHAREKHAZNPPMI-UHFFFAOYSA-N hexa-1,3-diene Chemical compound CCC=CC=C AHAREKHAZNPPMI-UHFFFAOYSA-N 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 125000004184 methoxymethyl group Chemical group [H]C([H])([H])OC([H])([H])* 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- PMJHHCWVYXUKFD-UHFFFAOYSA-N penta-1,3-diene Chemical compound CC=CC=C PMJHHCWVYXUKFD-UHFFFAOYSA-N 0.000 description 1
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- RYYKJJJTJZKILX-UHFFFAOYSA-M sodium octadecanoate Chemical compound [Na+].CCCCCCCCCCCCCCCCCC([O-])=O RYYKJJJTJZKILX-UHFFFAOYSA-M 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 150000003464 sulfur compounds Chemical class 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 229920002554 vinyl polymer Polymers 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、アクリルエラストマー組成物に関する。更に
詳しくは、金属腐食性を改善せしめたアクリルエラスト
マー組成物に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to acrylic elastomer compositions. More specifically, the present invention relates to an acrylic elastomer composition with improved metal corrosion resistance.
アクリルエラストマーの架橋成形品は、オイルシール、
０リング、パツキンなどのシール製品として広く使用さ
れているが、これらのシール製品は接触する相手金属を
腐食させ、その腐食によって生じた穴からシール対象液
が漏洩するなどのトラブルをひき起すことがある。Cross-linked molded products of acrylic elastomer are used for oil seals,
They are widely used as sealing products such as O-rings and packings, but these sealing products corrode the other metals they come in contact with, and can cause problems such as leakage of the sealing liquid from holes created by the corrosion. be.
そのような金属に対する腐食性は、アクリルエラストマ
ーの架橋に関与する架橋性基の種類によっても異なって
いる。例えば、架橋性基がハロゲンの場合には、その架
橋成形品は銅系統の金属（銅。Corrosivity to such metals also differs depending on the type of crosslinking group involved in crosslinking the acrylic elastomer. For example, if the crosslinkable group is halogen, the crosslinked molded product will contain copper-based metals (copper).
黄銅など）に関しては茶〜黒色または緑色の変色を与え
、また炭素鋼（ＪＩＳ ２０Ｃ）においては腐食穴を形
成させる。一方、架橋性基としてエポキシ基を有するア
クリルエラストマーの架橋成形品は、金属腐食性は強く
ないものの、それを改善するためにアンモニウムベンゾ
エートなどのアンモニウム塩を架橋剤として用いており
、そのため架橋成形中に有毒なアンモニアガスを発生さ
せるので、安全面から量産に適したものとはいえず、更
にシール製品として特に要求される圧縮永久歪も良くな
いという問題がある。It imparts brown to black or green discoloration to brass (such as brass), and forms corrosion holes in carbon steel (JIS 20C). On the other hand, cross-linked molded products made of acrylic elastomers that have epoxy groups as cross-linkable groups do not have strong metal corrosion resistance, but ammonium salts such as ammonium benzoate are used as cross-linking agents to improve this, and therefore during cross-link molding Since it generates toxic ammonia gas, it is not suitable for mass production from a safety standpoint, and it also has the problem of not having good compression set, which is particularly required for seal products.
そこで１本発明者は、アクリルエラストマーの架橋成形
品がシール製品として用いられたとき、相手金属を腐食
させないようなアクリルエラストマー組成物を求めて種
々検討の結果、過酸化物架橋性基としてビニル基を有す
るアクリルエラストマーを用い、そこに水酸化カルシウ
ムを配合して用いることにより、かかる課題が効果的に
解決されることを見出した。Therefore, as a result of various studies in search of an acrylic elastomer composition that would not corrode the mating metal when a crosslinked acrylic elastomer molded product is used as a seal product, the present inventor discovered that vinyl bases as peroxide crosslinkable groups. It has been found that this problem can be effectively solved by using an acrylic elastomer having the following properties and adding calcium hydroxide to the acrylic elastomer.
従って１本発明は金属腐食性を改善せしめたアクリルエ
ラストマー組成物に係り、このアクリルエラストマー組
成物は、架橋性基としてビニル基を有するアクリルエラ
ストマー、水酸化カルシウムおよび有機過酸化物を含有
してなる。Therefore, the present invention relates to an acrylic elastomer composition with improved metal corrosion resistance, and the acrylic elastomer composition contains an acrylic elastomer having a vinyl group as a crosslinkable group, calcium hydroxide, and an organic peroxide. .
ビニル基を有するアクリルエラストマーは、（ａ）炭素
数１〜８のアルキル基を有するアルキルアクリレートお
よび（ｂ）炭素数２〜８のアルコキシアルキル基を有す
るアルコキシアルキルアクリレートよりなる群から選ば
れた少くとも一種のアクリレート約５０〜９９．５重量
２、（ｃ）ジエン系単量体約０．５〜２０重量メおよび
（ｄ）これらの重合性単量体と共重合し得る少くとも一
種の単量体約４０〜０重量％の共重合体よりなる。The acrylic elastomer having a vinyl group is at least selected from the group consisting of (a) an alkyl acrylate having an alkyl group having 1 to 8 carbon atoms, and (b) an alkoxyalkyl acrylate having an alkoxyalkyl group having 2 to 8 carbon atoms. (c) about 0.5 to 20 weight units of a diene monomer; and (d) at least one monomer copolymerizable with these polymerizable monomers. It consists of about 40-0% by weight of copolymer.
（ａ）成分アルキルアクリレートのアルキル基としては
、例えばメチル、エチル、ｎ−プロピル、イソプロピル
、ｎ−ブチル、イソブチル、ｎ−アミル、ｎ、−ヘキシ
ル、２−エチルヘキシル、ｎ−オクチル、２−シアノエ
チル基などが挙げられ、好ましくはエチルアクリレート
、ｎ−ブチルアクリレートが用いられる。Examples of the alkyl group in component (a) alkyl acrylate include methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, n-amyl, n,-hexyl, 2-ethylhexyl, n-octyl, and 2-cyanoethyl groups. Ethyl acrylate and n-butyl acrylate are preferably used.
（ｂ）成分のアルコキシアルキルアクリレートのアルコ
キシアルキル基としては、例えばメトキシメチル、エト
キシメチル、２−メトキシエチル、２−エトキシエチル
、２−ブトキシエチル基などが挙げられ、好ましくは２
−メトキシエチルアクリレート、２−エトキシエチルア
クリレートが用いられる。Examples of the alkoxyalkyl group in the alkoxyalkyl acrylate component (b) include methoxymethyl, ethoxymethyl, 2-methoxyethyl, 2-ethoxyethyl, and 2-butoxyethyl groups, and preferably 2-butoxyethyl groups.
-Methoxyethyl acrylate and 2-ethoxyethyl acrylate are used.
（Ｃ）成分のジエン系単量体としては、例えばジビニル
ベンゼン、イソプレン、ペンタジェン、ビニルシクロヘ
キセン、クロロプレン、ブタジェン、メチルブタジェン
、シクロペンタジェン、メチルペンタジェン、ヘキサジ
エン、エチリデンノルボルネン、メチルテトラヒドロイ
ンデン、ジシクロペンタジェンなどが用いられる。Examples of the diene monomer of component (C) include divinylbenzene, isoprene, pentadiene, vinylcyclohexene, chloroprene, butadiene, methylbutadiene, cyclopentadiene, methylpentadiene, hexadiene, ethylidenenorbornene, methyltetrahydroindene, Cyclopentadiene and the like are used.
また、（ｄ）成分の重合性単量体としては１例えばエチ
レン、プロピレン、塩化ビニル、塩化ビニリデン、アク
リロニトリル、スチレン、酢酸ビニル、エチルビニルエ
ーテル、ブチルビニルエーテル、アルキルメタクリレー
ト、アルコキシアルキルメタクリレートなどが挙げられ
る。Examples of the polymerizable monomer as component (d) include ethylene, propylene, vinyl chloride, vinylidene chloride, acrylonitrile, styrene, vinyl acetate, ethyl vinyl ether, butyl vinyl ether, alkyl methacrylate, and alkoxyalkyl methacrylate.
これらのビニル基含有アクリルエラストマーには、水酸
化カルシウムが添加されるが、それは次のような理由に
基いている。即ち、アクリルエラストマーの一般配合で
は、有機酸などの加工助剤。Calcium hydroxide is added to these vinyl group-containing acrylic elastomers for the following reasons. That is, in the general formulation of acrylic elastomers, processing aids such as organic acids are used.
アミン誘導体などの酸化防止剤が使用され、それらはそ
れぞれ銅や銅合金に対して緑青の発生や茶〜黒色の変色
をもたらし、またシール製品用途には不可欠の成分であ
る可塑剤や補強剤からも、それらに微量台まれる酸化物
やイオウ化合物による金属腐食がみられるが、これらの
各配合成分はゴムの加工性や物性を向上させるために不
可欠の成分であり、それらを除外することはできない、
しかるに、そこに水酸化カルシウムを配合することによ
り、また金属腐食性の強さに応じてその配合量を多くす
ることにより、金属腐食性が改善される。その配合量は
、一般にエラストマー１００重量部当り約１〜２０重量
部であり、これ以下の配合割合ではその改善目的が達成
されず、一方これより多く用いると成形材料の引張強さ
、伸びなどの加硫物性を低下させるようになる。Antioxidants such as amine derivatives are used, which cause patina and brown to black discoloration on copper and copper alloys, respectively, and plasticizers and reinforcing agents, which are essential components in seal product applications. However, metal corrosion is observed due to trace amounts of oxides and sulfur compounds contained in these compounds, but each of these compounding components is essential for improving the processability and physical properties of rubber, so excluding them is not an option. Can not,
However, by blending calcium hydroxide therein, or by increasing the blending amount depending on the strength of metal corrosivity, the metal corrosivity can be improved. The blending amount is generally about 1 to 20 parts by weight per 100 parts by weight of the elastomer, and if the blending ratio is less than this, the improvement objective will not be achieved, whereas if it is used in a larger amount, the tensile strength, elongation, etc. of the molding material will be affected. Vulcanized physical properties are reduced.
アクリルエラストマー組成物は、上記の各成分に加えて
、架橋剤としての有機過酸化物を含有している。有機過
酸化物としては、例えばベンゾイルパーオキシド、２，
４−ジクロロベンゾイルパーオキシド、１．１−ジ（第
３ブチルパーオキシ）−３，３，５−トリメチルシクロ
ヘキサン、ｎ−ブチル−４，４−ビス（第３ブチルパー
オキシ）バレレート、ジクミルパーオキシド、ジ第３ブ
チルパーオキシジイソプロビルベンゼン、２，５−ジメ
チル−２，５−ジ（第３ブチルパーオキシ）ヘキサン、
２，５−ジメチル−２，５−ジ（第３ブチルパーオキシ
）ヘキシン−３などが、エラストマー１００重量部当り
約０．１〜ＩＯ重量部、好ましくは約０．５〜５重量部
の割合で用いられる。In addition to the above-mentioned components, the acrylic elastomer composition contains an organic peroxide as a crosslinking agent. Examples of organic peroxides include benzoyl peroxide, 2,
4-dichlorobenzoyl peroxide, 1,1-di(tert-butylperoxy)-3,3,5-trimethylcyclohexane, n-butyl-4,4-bis(tert-butylperoxy)valerate, dicumyl peroxide oxide, ditert-butylperoxydiisopropylbenzene, 2,5-dimethyl-2,5-di(tert-butylperoxy)hexane,
2,5-dimethyl-2,5-di(tert-butylperoxy)hexyne-3 and the like in a proportion of about 0.1 to IO parts by weight, preferably about 0.5 to 5 parts by weight per 100 parts by weight of elastomer. used in
組成物の調製は、ロール混合法、バンバリー混合法など
によって行われ、それの加硫は、一般に約１５０〜１９
０℃、約５〜２０分間のプレス加硫および約１５０〜１
８０℃、約０〜１５時間の二次加硫によって行われる。The preparation of the composition is carried out by the roll mixing method, Banbury mixing method, etc., and the vulcanization thereof is generally about 150 to 19
Press vulcanization at 0°C for about 5-20 minutes and about 150-1
Secondary vulcanization is performed at 80° C. for about 0 to 15 hours.
架橋性基としてビニル基を有するアクリルエラストマー
を用い、それに水酸化カルシウムを添加した組成物は、
それを有機過酸化物で架橋させることにより、銅系金属
、炭素鋼などの各種相手金属に対する腐食性を改善せし
めている。従って、本発明のアクリルエラストマー組成
物は、これらの金属と接触して使用されるシール製品の
成形材料などとして有効に用いることができる。A composition using an acrylic elastomer having a vinyl group as a crosslinkable group and adding calcium hydroxide to it,
By crosslinking it with an organic peroxide, the corrosion resistance against various partner metals such as copper-based metals and carbon steel is improved. Therefore, the acrylic elastomer composition of the present invention can be effectively used as a molding material for seal products used in contact with these metals.
次に、実施例について本発明の詳細な説明する。 Next, the present invention will be described in detail with reference to examples.
実施例、比較例１〜４
ビニル基含有アクリルエラストマー（日本メクトロン製
品Ｂ８６０ニアクリルエラストマーＡ）、エポキシ基含
有アクリルエラストマー（同社製品ＰＡ３１２；アクリ
ルエラストマーＢ）またはクロル基含有アクリルエラス
トマー（同社製品ＰＡ４０２；アクリルエラストマーＣ
）１００部（重量、以下同じ）、ＦＥＦカーボンブラッ
ク４０部、湿式シリカ（日本シリカ製品ニップシールＶ
Ｎ−３） ２０部、可塑剤（アデカアーガス製品Ｒ５−
７００） １０部およびステアリン酸（加工助剤）１部
に、次の他の配合剤の少くとも一種を加え、冷却下のオ
ープンロールで混合した。Examples, Comparative Examples 1 to 4 Vinyl group-containing acrylic elastomer (Nippon Mectron product B860 Niacrylic elastomer A), epoxy group-containing acrylic elastomer (Company product PA312; Acrylic elastomer B), or chloro group-containing acrylic elastomer (Company product PA402; Acrylic Elastomer C
) 100 parts (weight, same below), 40 parts of FEF carbon black, wet silica (Nippon Silica product Nip Seal V
N-3) 20 parts, plasticizer (Adeka Argus product R5-
700) At least one of the following other ingredients was added to 10 parts and 1 part of stearic acid (processing aid) and mixed on an open roll under cooling.
水酸化カルシウム
老化防止剤（ナラガタック社製量ラウガード１４４５）
架橋剤！（ジクミルパーオキシド、日本油脂製品パーク
ミルＤ）〃 ■（ステアリン酸ナトリウム／Ｓ系）ｎ
［［（入内新興化学製品ノックフェラＴＴＦＥ／ＰＺ
系）調製された組成物を１７０℃で１５分間プレス加硫
し、得られた架橋シートについて加硫物性および圧縮永
久歪（１３０℃、７０時間）を測定すると共に、次のよ
うな試験を行なった。Calcium hydroxide anti-aging agent (Laugard 1445 manufactured by Naragatak)
Crosslinking agent! (Dicumyl peroxide, NOF Percmil D) ■ (Sodium stearate/S type) n
[[(Iriuchi Shinko Chemical Products Knock Fella TTFE/PZ
System) The prepared composition was press-vulcanized at 170°C for 15 minutes, and the vulcanized physical properties and compression set (130°C, 70 hours) of the obtained crosslinked sheet were measured, and the following tests were conducted. Ta.
ＧＭ ９００３−Ｐ腐食試験：
Ｇｅｎｅｒａｌ Ｍｏｔｏｒｓ Ｅｎｇｉｎｅｅｒ
ｉｎｇ ５ｔａｎｄａｒｄＣｏｒｒｏｓｉｏｎ Ｔｅ
５ｔ ｆｏｒ ５ｅａｌ Ｃｏｍｐｏｕｎｄｓ炭素鋼に
ついて、０（良）〜５（悪）の６段階で評価銅接触試験
：
銅に架橋シートを接触させ、１３０℃の雰囲気下に１０
０時間放置後の銅接触部の表面状態をＥ察
以上の測定ならびに試験結果は、アクリルエラストマー
の種類および他の配合剤の配合量と共に、次の表に示さ
れる。GM 9003-P Corrosion Test: General Motors Engineer
ing 5 standard Corrosion Te
Copper contact test: 5t for 5eal compounds carbon steel is evaluated in 6 stages from 0 (good) to 5 (bad): A crosslinked sheet is brought into contact with copper, and 10
The results of the above measurements and tests on the surface condition of the copper contact area after being left standing for 0 hours are shown in the table below, along with the type of acrylic elastomer and the amounts of other compounding agents.
（以下余白）(Margin below)
Claims (1)
マー、水酸化カルシウムおよび有機過酸化物を含有して
なるアクリルエラストマー組成物。1. An acrylic elastomer composition containing an acrylic elastomer having a vinyl group as a crosslinkable group, calcium hydroxide, and an organic peroxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33015787A JPH01172445A (en) | 1987-12-28 | 1987-12-28 | Acrylate elastomer composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33015787A JPH01172445A (en) | 1987-12-28 | 1987-12-28 | Acrylate elastomer composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01172445A true JPH01172445A (en) | 1989-07-07 |
Family
ID=18229454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33015787A Pending JPH01172445A (en) | 1987-12-28 | 1987-12-28 | Acrylate elastomer composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01172445A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5043143A (en) * | 1973-08-22 | 1975-04-18 |
-
1987
- 1987-12-28 JP JP33015787A patent/JPH01172445A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5043143A (en) * | 1973-08-22 | 1975-04-18 |
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