JP2002212439A - Electret material - Google Patents
Electret materialInfo
- Publication number
- JP2002212439A JP2002212439A JP2001008956A JP2001008956A JP2002212439A JP 2002212439 A JP2002212439 A JP 2002212439A JP 2001008956 A JP2001008956 A JP 2001008956A JP 2001008956 A JP2001008956 A JP 2001008956A JP 2002212439 A JP2002212439 A JP 2002212439A
- Authority
- JP
- Japan
- Prior art keywords
- phenol
- hindered
- hindered phenol
- electret material
- weight
- 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.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、耐熱安定性、永久
帯電性の優れたエレクトレット材料に関するものであ
る。特に、タバコ煙の除去を目的とする機器、室内空気
清浄機のフィルター、作業用防塵マスクなどの利用に適
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electret material excellent in heat stability and permanent charging property. In particular, it is suitable for use in equipment for removing tobacco smoke, filters for indoor air purifiers, dust masks for work, and the like.
【０００２】[0002]
【従来の技術】高分子重合体に配合物を添加してエレク
トレット化効果を付与する方法として、たとえば,特開
昭６０−１９６９２２号には、絶縁高分子重合体に配合
物として脂肪酸金属塩を配合しコロナ放電処理する方法
が記載されている。また、特公平４−４２８１２号に
は、ヒンダードアミン系、含窒素ヒンダードフェノール
系、金属塩ヒンダードフェノール系あるいは、フェノー
ル系の安定剤から選ばれた少なくとも１種を配合して耐
熱性を向上させたものが記載されている。2. Description of the Related Art As a method for imparting an electret effect by adding a compound to a polymer, for example, Japanese Patent Application Laid-Open No. 60-196922 discloses a method in which a fatty acid metal salt is added as a compound to an insulating polymer. A method of blending and corona discharge treatment is described. Japanese Patent Publication No. 4-42812 discloses that heat resistance is improved by blending at least one selected from hindered amine-based, nitrogen-containing hindered phenol-based, metal salt hindered phenol-based, and phenol-based stabilizers. Is described.
【０００３】しかし,これらの配合剤では、耐熱性の向
上は見られるが、半永久的持続性はなく、必ずしも十分
満足できるものではなかった。[0003] However, these compounds have improved heat resistance, but do not have a semi-permanent durability and are not always satisfactory.
【０００４】一方、高分子重合体に本発明に用いるアル
キルホスフィン酸化合物については、たとえば特開昭６
０−１８１１４６号に記載されているように、オレフィ
ン樹脂組成物に添加して着色防止性、剛性ならびに低温
における衝撃強度の向上に寄与することが記載されてい
る。また、近年には、特開平４−３５１６６９号にオレ
フィン系の酸化防止剤効果としてフェノール系と併用す
ることが記載されている。On the other hand, alkyl phosphinic acid compounds used in the present invention for high polymers are described in, for example,
As described in Japanese Patent Application No. 0-181146, it is described that addition to an olefin resin composition contributes to improvement in anti-coloring properties, rigidity, and impact strength at low temperatures. In recent years, Japanese Patent Application Laid-Open No. 4-351669 describes that an olefin-based antioxidant is used in combination with a phenol-based antioxidant.
【０００５】しかし、これらの発明は、高分子重合体の
酸化防止および剛性特性の向上であり、脂肪酸金属塩と
の併用による帯電性、しかも半永久的特性の持続につい
ては記載されていない。[0005] However, these inventions are directed to the prevention of oxidation and the improvement of rigidity of the high molecular polymer, and do not disclose the chargeability by the combined use with the fatty acid metal salt and the continuation of the semi-permanent property.
【０００６】[0006]
【発明が解決しようとする課題】本発明は、高温サイド
において高いトラップ電荷量を有し、長時間にわたり電
荷を安定に保持する耐熱性、着色性に優れたエレクトレ
ット材料を提供するものである。SUMMARY OF THE INVENTION The present invention is to provide an electret material having a high trapped charge amount at a high temperature side and having excellent heat resistance and coloring properties for stably retaining charges for a long time.
【０００７】[0007]
【課題を解決しようとする手段】本発明は、高分子重合
体、前記高分子重合体１００重量部あたり０．０１〜１
０重量部のヒンダードアミン系、含窒素ヒンダードフェ
ノール系、金属塩ヒンダードフェノール系、フェノール
系、ヒンダードフェノール系、フェノール系硫黄系耐候
性付与剤から選ばれた少なくとも１種を含み、かつ前記
ヒンダードアミン系、含窒素ヒンダードフェノール系、
金属塩ヒンダードフェノール系、フェノール系、ヒンダ
ードフェノール系、フェノール系硫黄系耐候性付与剤１
重量部あたり０．０１〜１０重量部の下記一般式（１）
または（２）であらわされるアルキルホスフィン酸化合
物とを配合した耐熱性エレクトレット材料である。According to the present invention, there is provided a polymer, wherein the amount of the polymer is 0.01 to 1 per 100 parts by weight of the polymer.
0 parts by weight of at least one selected from hindered amine-based, nitrogen-containing hindered phenol-based, metal salt hindered phenol-based, phenol-based, hindered phenol-based, phenol-based sulfur-based weathering agents, and the hindered amine System, nitrogen-containing hindered phenol system,
Metal salt hindered phenol-based, phenol-based, hindered phenol-based, phenol-based sulfur-based weathering agent 1
The following general formula (1) of 0.01 to 10 parts by weight per part by weight
Or a heat-resistant electret material blended with the alkylphosphinic acid compound represented by (2).
【０００８】[0008]
【化３】 （式中、Ｒ1及びＲ2は有機基又はハロゲン原子を示し、
ｍ及びｎは０〜４の整数を示し、ｍまたはｎが２〜４の
整数の場合にＲ1及びＲ2はそれぞれ同一またはことなっ
てもよい。）Embedded image (Wherein R 1 and R 2 represent an organic group or a halogen atom,
m and n each represent an integer of 0 to 4, and when m or n is an integer of 2 to 4, R 1 and R 2 may be the same or different. )
【０００９】ヒンダードアミン系、含窒素ヒンダードフ
ェノール系、金属塩ヒンダードフェノール系、フェノー
ル系硫黄系耐候性付与剤、および前記ヒンダードアミン
系、含窒素ヒンダードフェノール系、金属塩ヒンダード
フェノール系、フェノール系、ヒンダードフェノール
系、フェノール系硫黄系耐候剤にアルキルホスフィン酸
化合物とを添加することにより、帯電性および耐熱性、
着色性が著しく向上するとともに長時間にわたりこれら
の効果が持続された。Hindered amines, nitrogen-containing hindered phenols, metal salt hindered phenols, phenolic sulfur-based weathering agents, and the hindered amines, nitrogen-containing hindered phenols, metal salt hindered phenols, phenols By adding an alkylphosphinic acid compound to a hindered phenol-based, phenol-based sulfur-based weathering agent, the chargeability and heat resistance,
The coloring property was remarkably improved, and these effects were maintained for a long time.
【００１０】さらに、たとえば特開平４−４２８１２で
は、種々酸化防止剤の効果が記載されているが、本発明
ではさらに、高い温度雰囲気下でも耐着色性の効果およ
びシート作成時の成形性も著しく向上した。Further, for example, Japanese Patent Application Laid-Open No. 4-42812 discloses effects of various antioxidants, but in the present invention, the effect of coloring resistance even under a high temperature atmosphere and the moldability at the time of sheet production are remarkably improved. Improved.
【００１１】[0011]
【発明の実施の形態】本発明に使用する高分子重合体
は、ポリプロピレン、ポリエチレン、ポリスチレン、ポ
リエステル、ポリカーボネート、ポリアミド、ポリフェ
ニレンサルファイト、フッ素系樹脂、塩素系樹脂、ビニ
ール樹脂および／またはブレンドされたもの等の可紡性
のある樹脂を用いる。特にエレクトケット材料として
は、ポリプロ゜レンが絶縁性の面からも好ましい。BEST MODE FOR CARRYING OUT THE INVENTION The polymer used in the present invention is polypropylene, polyethylene, polystyrene, polyester, polycarbonate, polyamide, polyphenylene sulfite, fluororesin, chlorine resin, vinyl resin and / or blended. Use a spinnable resin such as a resin. In particular, as an electket material, polypropylene is preferable in terms of insulating properties.
【００１２】上記高分子重合体の体積抵抗率は、１０12
Ωｃｍ以上以上好ましくは、１０14Ωｃｍ以上である。
これ以下であれば、帯電性の効果は小さく、逆に１０14
Ωｃｍ以上であれば、効果はほぼ一定化する。The volume resistivity of the high-molecular polymer is 10 12
Ωcm or more, preferably 10 14 Ωcm or more.
Below this, the effect of the charging property is small, and conversely, 10 14
If it is Ωcm or more, the effect is almost constant.
【００１３】本発明に使用する酸化防止剤の一例とし
て、ヒンダードアミンの場合、ポリ［｛（６−（１，
１，３，３，−テトラメチルブチル）イミノ−１，３，
５−トリアジン−２，４−ジイル）｛（２，２，６，６
−テトラメチル−４−ピペリジル）イミノ｝ヘキサメチ
レン｛（２，２，６，６−テトラメチル−４−ピペリジ
ル）イミノ｝｝（チバガイギー社商品名でキマソーブ９
４４ＬＤ）、コハク酸ジメチル−１−ヒドロキシエチ
ル］−４−ヒドロキシ−２，２，６，６−テトラメチル
ピペリジン重縮合物（チバガイギー社商品名でチヌビン
６２２ＬＤ）、２−（３，５−ジ−ｔ−ブチル−４−ヒ
ドロキシベンジル）−２−ｎ−ブチルマロン酸ビス
（１，２，２，６，６−ペンタメチル−４−ピペリジ
ル）（チバガイギー社商品名でチヌビン１４４）などが
ある。As an example of the antioxidant used in the present invention, in the case of hindered amine, poly [｛(6- (1,1)
(1,3,3-tetramethylbutyl) imino-1,3,
5-triazine-2,4-diyl) {(2,2,6,6
-Tetramethyl-4-piperidyl) imino {hexamethylene} (2,2,6,6-tetramethyl-4-piperidyl) imino} (Chimasov 9 under the trade name of Ciba-Geigy)
44LD), dimethyl-1-hydroxyethyl succinate] -4-hydroxy-2,2,6,6-tetramethylpiperidine polycondensate (Tinuvin 622LD under the trade name of Ciba Geigy), 2- (3,5-di- Bis (1,2,2,6,6-pentamethyl-4-piperidyl) (t-butyl-4-hydroxybenzyl) -2-n-butylmalonate (Tinuvin 144 under the trade name of Ciba Geigy) and the like.
【００１４】含窒素ヒンダードフェノールでは、１，
３，５−トリス（４−ｔ−ブチル−３−ヒドロキシ−
２，６−ジメチルベンジル）イソシアヌル酸（日本サイ
アナミド社商品名サイアノックス１７９０）あるいは、
１，３，５−トリス（３，５−ジ−ｔ−ブチル−４−ヒ
ドロキシベンジル）イソシアヌル酸（チバガイギー社商
品名でＩＲ３１１４）などがある。In the nitrogen-containing hindered phenol, 1,
3,5-tris (4-t-butyl-3-hydroxy-
2,6-dimethylbenzyl) isocyanuric acid (trade name Cyanox 1790, Nippon Cyanamid Co.) or
1,3,5-tris (3,5-di-t-butyl-4-hydroxybenzyl) isocyanuric acid (IR3114 under the trade name of Ciba Geigy).
【００１５】金属塩ヒンダードフェノールでは、３，５
−ジ−ｔ−ブチル−４−ヒドロキシ−ベンジツル−モノ
−エチル−ホスホネートのカルシウム（ＩＲ１４２５Ｗ
Ｌ）、３，５−ジ−ｔ−ブチル−４−ヒドロキシ−ベン
ジル−モノ−エチル−ホスホネートのニッケル（チバガ
イギー社商品名でイルガスターブ２００２）、あるい
は、同上化合物のマグネシウム塩などがある。In the metal salt hindered phenol, 3,5
Calcium di-tert-butyl-4-hydroxy-benzyl-mono-ethyl-phosphonate (IR1425W
L), nickel of 3,5-di-t-butyl-4-hydroxy-benzyl-mono-ethyl-phosphonate (Ilgastab 2002 under the trade name of Ciba-Geigy), or a magnesium salt of the above compound.
【００１６】フェノール系では、１，３，５−トリメチ
ル−２，４，６−トリス（３，５−ジ−ｔ−ブチル−４
−ヒドロキシル）ベンゼン（チバガイギー社商品名でＩ
Ｒ１３３０）、ペンタエリスリチル−テトラキス［３−
（３，５−ジ−ｔ−ブチル−４−ヒドロキシフェニル）
プロピオネート（チバガイギー社商品名でＩＲ１０１
０）などがある。In the phenol type, 1,3,5-trimethyl-2,4,6-tris (3,5-di-t-butyl-4
-Hydroxyl) benzene (Ciba-Geigy trade name I
R1330), pentaerythrityl-tetrakis [3-
(3,5-di-t-butyl-4-hydroxyphenyl)
Propionate (IR101 under the trade name of Ciba Geigy)
0).
【００１７】ヒンダードフェノール系では、２，６−ジ
−ｔ−ブチル−４−メチルフェノール（スミライザーＢ
ＨＴ）、ｎ−オクタデシル−３−（３‘，５’−ジ−ｔ
−ブチル−４‘−ヒドロキシフェニル）プロピオネー
ト、２，２’−メチレン−ビス−（４−メチル−６−ｔ
−ブチルフェノール）、２−ｔ−ブチル−６−（３‘−
ｔ−ブチル−５’−メチル−２‘−ヒドロキシベンジ
ル）−４−メチルフェニルアクリレート、１，３，５−
トリス（４−ｔ−ブチル−３−ヒドロキシ−２，６−ジ
メチルベンジル）イソシアヌレート、テトラキス−［メ
チレン−３−（３’，５‘−ジ−ｔ−ブチル−４’−ヒ
ドロキシフェニル）プロピオネート］−メタン（スミラ
イザーＢＰ−１０１）、３，９−ビス−［２−３−（３
−ｔ−ブチル−４−ヒドロキシ−５−メチルフェニル）
プロピオニルオキシ］−１，１−ジメチルエチル］−
２，４，８，１０−テトラオキサスピロ［５，５］ウン
デカンなどがある。Hindered phenols include 2,6-di-t-butyl-4-methylphenol (Sumilyzer B)
HT), n-octadecyl-3- (3 ', 5'-di-t
-Butyl-4'-hydroxyphenyl) propionate, 2,2'-methylene-bis- (4-methyl-6-t
-Butylphenol), 2-t-butyl-6- (3′-
t-butyl-5'-methyl-2'-hydroxybenzyl) -4-methylphenylacrylate, 1,3,5-
Tris (4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl) isocyanurate, tetrakis- [methylene-3- (3 ′, 5′-di-tert-butyl-4′-hydroxyphenyl) propionate] -Methane (Sumilyzer BP-101), 3,9-bis- [2-3- (3
-T-butyl-4-hydroxy-5-methylphenyl)
Propionyloxy] -1,1-dimethylethyl]-
2,4,8,10-tetraoxaspiro [5,5] undecane and the like.
【００１８】硫黄系安定剤としては、ジラウリルチオジ
プロピオネート（ＤＬＴＤＰ）、ジミリスチリルチオジ
プロピオネート、ジステアリルチオジプロピオネート
（ＤＳＴＤＰ）、ペンタエリスリトール−テトラキス−
（β−ラウリルチオプロピオネート）、２−メルカプト
ベンゾイミダゾーなどがある。Examples of the sulfur-based stabilizer include dilauryl thiodipropionate (DLTDP), dimyristyl thiodipropionate, distearyl thiodipropionate (DSTDP), and pentaerythritol-tetrakis-
(Β-laurylthiopropionate) and 2-mercaptobenzimidazo.
【００１９】本発明は、高分子重合体１００重量部に対
して、これらの耐候付与剤から選ばれた少なくとも１種
を配合し、０．０１重量部以上１０重量部以下、好まし
くは０．０１重量部以上８重量部以下配合し、さらにか
つ下記一般式（１）であらわされるアルキルホスフィン
酸化合物をこれらの耐候付与剤に対して０．０１重量部
以上１０重量部以下、好ましくは０．０１重量部以上８
重量部以下配合して耐熱性を持たせるとともに着色性に
優れかつ長期にわたり除塵効果を維持することができ
る。In the present invention, 0.01 to 10 parts by weight, preferably 0.01 to 10 parts by weight, of at least one selected from these weathering agents is blended with 100 parts by weight of the polymer. The alkylphosphinic acid compound represented by the following general formula (1) is added in an amount of 0.01 to 10 parts by weight, preferably 0.01 to 10 parts by weight, based on the weathering agent. 8 parts by weight or more
By blending not more than parts by weight, heat resistance is imparted, the colorability is excellent, and the dust removing effect can be maintained for a long time.
【００２０】[0020]
【化４】 （式２） （式中、Ｒ1及びＲ2 は有機基又はハロゲン原子を示
し、ｍ及びｎは０〜４の整数を示し、ｍ又はｎが２〜４
の整数の場合にＲ1及びＲ2 はそれぞれ同一又は異なっ
ていてもよい。また、ＡはＲ1及びＲ2 と同一又は異な
る有機基を示す。）Embedded image (Wherein, R 1 and R 2 represent an organic group or a halogen atom, m and n each represent an integer of 0 to 4, and m or n represents 2 to 4)
R 1 and R 2 may be the same or different, respectively. A represents the same or different organic group as R 1 and R 2 . )
【００２１】具体的なアルキルホスフィン酸化合物とし
ては、９，１０−ジヒドロ−９−オキサ−１０−ホスフ
ァフェナンスレン−１０−オキサイド（ＨＣＡ）、６，
８−ジクロル−９，１０−ジヒドロ−９−オキサ−１０
−ホスファフェナンスレン−１０−オキサイド、その他
下記化学式（ａ）〜（ｚ）、（α）〜（σ）などがあげ
られる。特に, ９，１０−ジヒドロ−９−オキサ−１０
−ホスファフェナンスレン−１０−オキサイドはブリー
ドアウトも少なく好ましい。添加量は、記載の範囲以下
では効果が小さく、範囲以上であれば、効果はほぼ同程
度であり、ブリードアウトの傾向となり好ましくない。Specific examples of the alkylphosphinic acid compound include 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (HCA),
8-dichloro-9,10-dihydro-9-oxa-10
-Phosphaphenanthrene-10-oxide, and other chemical formulas (a) to (z) and (α) to (σ). In particular, 9,10-dihydro-9-oxa-10
-Phosphaphenanthrene-10-oxide is preferable because it has less bleed-out. If the amount is less than the range, the effect is small. If the amount is more than the range, the effect is almost the same and bleed out tends to occur, which is not preferable.
【００２２】[0022]
【化５】 Embedded image
【００２３】[0023]
【化６】 Embedded image
【００２４】[0024]
【化７】 Embedded image
【００２５】[0025]
【化８】 Embedded image
【００２６】[0026]
【化９】 Embedded image
【００２７】[0027]
【化１０】 Embedded image
【００２８】さらにアルキルホスフィン酸化合物として
は、上記以外に〔化１１〕で示される化合物も有効であ
る。具体的には、フェニルホスフイン酸ナトリウム、フ
ェニルホスフイン酸カリウム、フェニルホスフイン酸リ
チウム、フェニルホスフイン酸カルシウム、フェニルホ
スフイン酸マグネシウム等がある。Further, as the alkylphosphinic acid compound, other than the above, the compound represented by the formula (11) is also effective. Specifically, there are sodium phenylphosphinate, potassium phenylphosphinate, lithium phenylphosphinate, calcium phenylphosphinate, magnesium phenylphosphinate and the like.
【００２９】[0029]
【化１１】 （式３） （式中、Ｒは炭素数１以上２２以下のアルキル基、フェ
ニル基、ナフチル基およびアントラセン基を示し,Ｘは
金属イオン、アンモニウムイオン、ホスホニウムイオン
を示す。）Embedded image (In the formula, R represents an alkyl group having 1 to 22 carbon atoms, a phenyl group, a naphthyl group, and an anthracene group, and X represents a metal ion, an ammonium ion, and a phosphonium ion.)
【００３０】本発明のアルキルホスフィン酸化合物を添
加することにより、高温サイドにおいて高いトラップ電
荷量を有し、長時間にわたり電荷を安定に保持する耐熱
性、着色性、剛性に優れる原因についての詳細な原因は
まだわからないが, アルキルホスフィン酸化合物と、こ
れら耐気性付与剤とが何らかの相互作用を及ぼしあうも
のと推定される。By adding the alkylphosphinic acid compound of the present invention, it is possible to obtain a high amount of trapped charge on the high temperature side and to stably hold the charge for a long time. Although the cause is not yet known, it is presumed that the alkylphosphinic acid compound interacts with these air resistance imparting agents in some way.
【００３１】上記配合剤が添加された高分子重合体のエ
レクトレット性については、熱安定性に優れ、１００℃
以上における熱刺激脱分極電流からのトラッブ電荷量が
２．０×１０-10クーロン／ｃｍ2以上を示し、過酷な条
件で長時間使用されてもトラッブ電荷量の低下はわずか
である。Regarding the electret property of the high-molecular polymer to which the above-mentioned compounding agent was added, the polymer was excellent in heat stability,
The amount of trapped charge from the heat-stimulated depolarization current is 2.0 × 10 −10 coulomb / cm 2 or more, and the amount of trapped charge is small even when used under severe conditions for a long time.
【００３２】エレクトレット材料をろ過材として使用す
る場合、熱刺激脱分極電流からのトラップ電荷量が２．
０×１０-10クーロン／ｃｍ2以上であるエレクトレット
材料が望ましく、さらに３．５×１０-10クーロン／ｃ
ｍ2以上であれば望ましい。When an electret material is used as a filter, the amount of trapped charge from the thermally stimulated depolarizing current is 2.
An electret material of 0 × 10 −10 coulomb / cm 2 or more is desirable, and more preferably 3.5 × 10 −10 coulomb / c.
m 2 or more is desirable.
【００３３】上記配合剤が添加された高分子重合体のエ
レクトレット材料の耐候性は、従来のものに比べて、著
しく改善され、紡糸時での着色もなく熱安定性に優れ,
かつ長時間使用後の着色もほとんどない。さらに上記熱
刺激脱分極電流からのトラップ電荷量が３．５×１０
-10クーロン／ｃｍ2以上も保持できる。The weather resistance of the high molecular weight electret material to which the above-mentioned compounding agent has been added is remarkably improved as compared with the conventional one, and there is no coloring during spinning and excellent heat stability.
In addition, there is almost no coloring after long use. Further, the amount of trapped charge from the thermally stimulated depolarizing current is 3.5 × 10
Can hold -10 coulomb / cm 2 or more.
【００３４】実施例により本発明のさらに詳細な説明す
るが、本発明はこれら実施例に限定されるものではな
い。The present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples.
【００３５】メルトブロー不織布は、所定の添加剤をポ
リプロピレン樹脂に溶融混合したものを、ルーダーより
溶融押し出しでメルトブロー法により、目付け３０ｇ／
ｍ2、平均繊維径が２．０μｍ、厚み０．３ｍｍになる
ようにメルトブロー紡糸して不織布を得た。The melt-blown non-woven fabric is prepared by melt-mixing a predetermined additive with a polypropylene resin and melt-extruding it from a ruder by melt-blowing to obtain a basis weight of 30 g / m 2.
m 2, average fiber diameter was obtained 2.0 .mu.m, a meltblown spinning to nonwovens such that the thickness 0.3 mm.
【００３６】上記で得られた不織布への荷電法は、該不
織布を半導体シートを敷いたアース板上に置き、アース
板の上方１ｃｍに設置した針電極（春日電機株式会社製
帯電電極）に＋２０Ｋｖの直流こう電圧を印加し、コ
ロナ正イオンを発生させ１０秒間エレクトレット化処理
した。The charging method for the non-woven fabric obtained above is as follows. The non-woven fabric is placed on an earth plate on which a semiconductor sheet is laid, and +20 Kv is applied to a needle electrode (charged electrode manufactured by Kasuga Electric Co., Ltd.) placed 1 cm above the earth plate. Was applied to generate corona positive ions, followed by electretization for 10 seconds.
【００３７】粒子捕集効率の評価は粒子径０．３μｍの
ＤＯＰ粒子を用い、図１に示し粒子捕集効率測定器によ
り行った。エレクトレット不織布３はダクト内に設置さ
れ、流量計４をフィルター通風速度が5．3cm／秒になる
ようバルブ５でコントロールし、エレクトレット不織布
の上流、下流のＤＯＰ粒子個数を粒子測定器７（株式会
社ＲＩＯＮ製 ＫＣ−１４）で測定した。捕集係数は数
１を用いて算出した。The evaluation of the particle collection efficiency was performed by using a DOP particle having a particle diameter of 0.3 μm by a particle collection efficiency measuring device shown in FIG. The electret non-woven fabric 3 is installed in a duct, and the flow meter 4 is controlled by the valve 5 so that the ventilation speed of the filter is 5.3 cm / sec, and the number of DOP particles upstream and downstream of the electret non-woven fabric is measured by a particle measuring device 7 (corp. It was measured by RION KC-14). The collection coefficient was calculated using Equation 1.
【００３８】（数１） 粒子捕集効率（％）＝（１−下流側粒子個数／上流側粒
子個数）×１００(Equation 1) Particle collection efficiency (%) = (1−number of downstream particles / number of upstream particles) × 100
【００３９】粒子捕集効率が高いほど、エレクトレット
不織布のエアフィルターとしての性能は優れている。The higher the particle collection efficiency, the better the performance of the electret nonwoven fabric as an air filter.
【００４０】表面電荷密度は、該不織布をアース板上に
置き、上方より表面電位計（川口電気株式会社製 表面
電位計Ｓ−２１１型）の検出プローブで該不織布の表面
電位を測定し、数式１で算出した。The surface charge density is obtained by placing the nonwoven fabric on an earth plate, measuring the surface potential of the nonwoven fabric from above using a detection probe of a surface potentiometer (Surface potentiometer S-211 manufactured by Kawaguchi Electric Co., Ltd.), 1 was calculated.
【００４１】 （数２） 表面電荷密度（Ｃ／ｃｍ2）＝εｓ・εｏ・Ｖ／ｔ(Equation 2) Surface charge density (C / cm 2 ) = εs · εo · V / t
【００４２】ここで、 εｓはエレクトレット不織布の
比誘電率でほぼ１であり、εｏは真空の誘電率で８．８
５×１０-14 Ｆ／ｃｍ、Ｖは表面電位（Ｖ）、ｔは該不
織布の厚み（ｃｍ）である。表面電荷密度の値はエレク
トレット不織布の帯電量を意味し、この値が高いほど帯
電量が高いことを示している。Here, εs is a relative dielectric constant of the electret nonwoven fabric of approximately 1, and εo is a vacuum dielectric constant of 8.8.
5 × 10 −14 F / cm, V is the surface potential (V), and t is the thickness (cm) of the nonwoven fabric. The value of the surface charge density means the electrification amount of the electret nonwoven fabric, and a higher value indicates a higher electrification amount.
【００４３】着色は、使用後の状態を目視判定し、変化
なしを◎、少々変化ありを○、変化ありを△、変色した
ものを×とした。As for coloring, the state after use was visually judged. No change was indicated by ◎, slight change was indicated by ○, change was indicated by △, and discolored was indicated by x.
【００４４】実施例１〜７に具体的な添加剤と配合量を
示し、またトラップ電荷量、着色、除塵効率について表
１に示した。いずれの場合も、アルキルホスフィン酸化
合物、脂肪酸金属塩を添加することにより、高温サイド
において高いトラップ電荷量を有し、長時間にわたり電
荷を安定に保持する耐熱性、着色性に優れていることが
わかる。このエレクトレット材料は製造後、６ヶ月経過
した後もほとんど性能の変化はなかった。Examples 1 to 7 show specific additives and their amounts, and Table 1 shows the amount of trapped charge, coloring and dust removal efficiency. In any case, by adding the alkyl phosphinic acid compound and the fatty acid metal salt, it has a high trapped charge amount on the high-temperature side, and has excellent heat resistance and colorability, which stably retain the charge for a long time. Understand. This electret material showed almost no change in performance even after 6 months had passed after production.
【００４５】[0045]
【表１】 [Table 1]
【００４６】[0046]
【表２】 [Table 2]
【００４７】[0047]
【表３】 [Table 3]
【００４８】[0048]
【表４】 [Table 4]
【００４９】[0049]
【表５】 [Table 5]
【００５０】[0050]
【表６】 [Table 6]
【００５１】[0051]
【表７】 [Table 7]
【００５２】[0052]
【発明の効果】アルキルホスフィン酸化合物を添加する
ことにより、高温サイドにおいて高いトラップ電荷量を
有し、長時間にわたり電荷を安定に保持する耐熱性、着
色性に優れていることがわかる。耐候性付与剤と何らか
の相互作用が働くものと考えられた。According to the present invention, the addition of the alkylphosphinic acid compound has a high trapped charge amount at the high temperature side, and is excellent in heat resistance and colorability in which the charge is stably held for a long time. It is thought that some interaction with the weathering agent works.
【図１】粒子捕集効率測定器の概略図である。FIG. 1 is a schematic diagram of a particle collection efficiency measuring device.
【図２】表面電位測定器の概略図である。FIG. 2 is a schematic diagram of a surface potential measuring device.
１ ＤＯＰ粒子発生機 ２ ダクト ３ エレクトレット不織布 ４ 流量計 ５ バルブ ６ ブロワー ７ 粒子計測器 ８ サンプリング管 ９ 表面電位計 １０ アース板 １１ 表面電位検出プローブ DESCRIPTION OF SYMBOLS 1 DOP particle generator 2 Duct 3 Electret nonwoven fabric 4 Flow meter 5 Valve 6 Blower 7 Particle measuring instrument 8 Sampling tube 9 Surface potential meter 10 Ground plate 11 Surface potential detection probe
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｂ０３Ｃ 3/28 Ｂ０３Ｃ 3/28 Ｃ０８Ｋ 5/13 Ｃ０８Ｋ 5/13 5/16 5/16 5/5313 5/5313 Ｄ０１Ｆ 1/10 Ｄ０１Ｆ 1/10 Ｆターム(参考） 4C080 AA05 BB02 CC12 HH08 JJ06 KK08 LL02 LL10 MM12 MM17 MM18 MM19 NN22 QQ11 4D019 AA01 BA13 BB03 BC01 BC12 DA02 4D054 AA13 BC16 4J002 BB031 BB121 BC031 BD021 BD121 CF001 CG011 CL001 CN011 EC036 EU076 EU186 EU196 EV096 EV296 EV346 EW176 GD02 GD05 4L035 BB31 EE01 EE12 FF01 FF05 JJ16 JJ18 JJ19 JJ22 JJ25 KK05 KK08 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) B03C 3/28 B03C 3/28 C08K 5/13 C08K 5/13 5/16 5/16 5/5313 5 / 5313 D01F 1/10 D01F 1/10 F term (reference) 4C080 AA05 BB02 CC12 HH08 JJ06 KK08 LL02 LL10 MM12 MM17 MM18 MM19 NN22 QQ11 4D019 AA01 BA13 BB03 BC01 BC12 DA02 4D054 AA13 BC1 4BC01 CN1 001 EU076 EU186 EU196 EV096 EV296 EV346 EW176 GD02 GD05 4L035 BB31 EE01 EE12 FF01 FF05 JJ16 JJ18 JJ19 JJ22 JJ25 KK05 KK08
Claims (5)
１００重量部あたり０．０１〜１０重量部のヒンダード
アミン系、含窒素ヒンダードフェノール系、金属塩ヒン
ダードフェノール系、フェノール系、ヒンダードフェノ
ール系、フェノール系硫黄系耐候性付与剤から選ばれた
少なくとも１種配合し、かつ前記ヒンダードアミン系、
含窒素ヒンダードフェノール系、金属塩ヒンダードフェ
ノール系、フェノール系、ヒンダードフェノール系、フ
ェノール系硫黄系耐候性付与剤１重量部あたり０．０１
〜１０重量部の下記一般式（１）であらわされるアルキ
ルホスフィン酸化合物とを配合してなることを特徴とす
る耐熱性エレクトレット材料。 【化１】 （式中、Ｒ1及びＲ2は有機基又はハロゲン原子を示し、
ｍ及びｎは０〜４の整数を示し、ｍまたはｎが２〜４の
整数の場合にＲ1及びＲ2はそれぞれ同一またはことなっ
てもよい。）1. A high molecular weight polymer comprising 0.01 to 10 parts by weight of a hindered amine, a nitrogen-containing hindered phenol, a metal salt hindered phenol, a phenolic, and a hindered per 100 parts by weight of the polymer. A phenol-based, phenol-based sulfur-based weathering agent, at least one compound selected from the group consisting of the hindered amines,
Nitrogen-containing hindered phenol-based, metal salt hindered phenol-based, phenol-based, hindered phenol-based, phenol-based sulfur-based weathering agent 0.01 per part by weight
A heat-resistant electret material characterized by comprising 10 to 10 parts by weight of an alkylphosphinic acid compound represented by the following general formula (1). Embedded image (Wherein R 1 and R 2 represent an organic group or a halogen atom,
m and n each represent an integer of 0 to 4, and when m or n is an integer of 2 to 4, R 1 and R 2 may be the same or different. )
らのトラップ電荷量が、２．０×１０-10クーロン／ｃ
ｍ2以上である請求項１に記載の耐熱性エレクトレット
材料。2. The amount of charge trapped from a thermally stimulated depolarizing current at 100 ° C. or more is 2.0 × 10 −10 coulomb / c.
The heat-resistant electret material according to claim 1, which has an m 2 or more.
以上からなる請求項１乃至２のいずれかに記載の耐熱性
エレクトレット材料。3. The high volume polymer has a volume resistivity of 10 12 Ωcm.
The heat-resistant electret material according to claim 1, comprising:
エレクトレット材料からなる絶縁性、帯電性に優れた除
塵フィルター。4. A dust filter comprising the heat-resistant electret material according to claim 1 and having excellent insulating properties and chargeability.
合物が、一般式（２）で表されることを特徴とする耐熱
性エレクトレット材料。 【化２】 （式中、Ｒ1及びＲ2 は有機基又はハロゲン原子を示
し、ｍ及びｎは０〜４の整数を示し、ｍ又はｎが２〜４
の整数の場合にＲ1及びＲ2 はそれぞれ同一又は異なっ
ていてもよい。また、ＡはＲ1及びＲ2 と同一又は異な
る有機基を示す。）5. A heat-resistant electret material, wherein the alkylphosphinic acid compound according to claim 1 is represented by the general formula (2). Embedded image (Wherein, R 1 and R 2 represent an organic group or a halogen atom, m and n each represent an integer of 0 to 4, and m or n represents 2 to 4)
R 1 and R 2 may be the same or different, respectively. A represents the same or different organic group as R 1 and R 2 . )
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001008956A JP3672087B2 (en) | 2001-01-17 | 2001-01-17 | Electret material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001008956A JP3672087B2 (en) | 2001-01-17 | 2001-01-17 | Electret material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002212439A true JP2002212439A (en) | 2002-07-31 |
| JP3672087B2 JP3672087B2 (en) | 2005-07-13 |
Family
ID=18876507
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001008956A Expired - Fee Related JP3672087B2 (en) | 2001-01-17 | 2001-01-17 | Electret material |
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| Country | Link |
|---|---|
| JP (1) | JP3672087B2 (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1690583A1 (en) * | 2003-11-11 | 2006-08-16 | Toyo Boseki Kabushiki Kaisha | Friction-charged filter material |
| WO2010114826A1 (en) | 2009-04-03 | 2010-10-07 | 3M Innovative Properties Company | Remote fluorination of fibrous filter webs |
| JP2011202107A (en) * | 2010-03-26 | 2011-10-13 | Nippon Steel Chem Co Ltd | Phosphorus-containing phenol resin composition, curable composition including the composition as essential component and cured product |
| US8529671B2 (en) | 2007-12-06 | 2013-09-10 | 3M Innovative Properties Comany | Electret webs with charge-enhancing additives |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1690583A1 (en) * | 2003-11-11 | 2006-08-16 | Toyo Boseki Kabushiki Kaisha | Friction-charged filter material |
| EP1690583A4 (en) * | 2003-11-11 | 2007-03-07 | Toyo Boseki | Friction-charged filter material |
| US8529671B2 (en) | 2007-12-06 | 2013-09-10 | 3M Innovative Properties Comany | Electret webs with charge-enhancing additives |
| US8613795B2 (en) | 2008-06-02 | 2013-12-24 | 3M Innovative Properties Company | Electret webs with charge-enhancing additives |
| WO2010114826A1 (en) | 2009-04-03 | 2010-10-07 | 3M Innovative Properties Company | Remote fluorination of fibrous filter webs |
| JP2011202107A (en) * | 2010-03-26 | 2011-10-13 | Nippon Steel Chem Co Ltd | Phosphorus-containing phenol resin composition, curable composition including the composition as essential component and cured product |
| US10240269B2 (en) | 2014-06-23 | 2019-03-26 | 3M Innovative Properties Company | Electret webs with charge-enhancing additives |
| US10919867B2 (en) | 2015-07-07 | 2021-02-16 | 3M Innovative Properties Company | Substituted benzotriazole phenols |
| US10669481B2 (en) | 2015-07-07 | 2020-06-02 | 3M Innovative Properties Company | Substituted benzotriazole phenolate salts and antioxidant compositions formed therefrom |
| US11053373B2 (en) | 2015-07-07 | 2021-07-06 | 3M Innovative Properties Company | Polymeric matrices with ionic additives |
| US11078419B2 (en) | 2015-07-07 | 2021-08-03 | 3M Innovative Properties Company | Substituted benzotriazole phenolate salts and antioxidant compositions formed therefrom |
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| CN114456493A (en) * | 2022-03-04 | 2022-05-10 | 山东天风新材料有限公司 | Electret master batch and preparation method and application thereof |
| CN114456493B (en) * | 2022-03-04 | 2023-08-25 | 山东天风新材料有限公司 | Electret master batch and preparation method and application thereof |
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