JP7453375B2 - エアフィルタ用濾材及びその製造方法 - Google Patents
エアフィルタ用濾材及びその製造方法 Download PDFInfo
- Publication number
- JP7453375B2 JP7453375B2 JP2022533005A JP2022533005A JP7453375B2 JP 7453375 B2 JP7453375 B2 JP 7453375B2 JP 2022533005 A JP2022533005 A JP 2022533005A JP 2022533005 A JP2022533005 A JP 2022533005A JP 7453375 B2 JP7453375 B2 JP 7453375B2
- Authority
- JP
- Japan
- Prior art keywords
- filter medium
- cationic
- fibers
- fluororesin
- surfactant
- 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.)
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- 229920005989 resin Polymers 0.000 claims description 57
- 125000002091 cationic group Chemical group 0.000 claims description 48
- 239000003365 glass fiber Substances 0.000 claims description 45
- 239000007787 solid Substances 0.000 claims description 33
- 239000004094 surface-active agent Substances 0.000 claims description 29
- 239000003093 cationic surfactant Substances 0.000 claims description 27
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- 229910052731 fluorine Inorganic materials 0.000 description 2
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- 125000001153 fluoro group Chemical group F* 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 125000005010 perfluoroalkyl group Chemical group 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
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- 238000011144 upstream manufacturing Methods 0.000 description 2
- 229940126062 Compound A Drugs 0.000 description 1
- NLDMNSXOCDLTTB-UHFFFAOYSA-N Heterophylliin A Natural products O1C2COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC2C(OC(=O)C=2C=C(O)C(O)=C(O)C=2)C(O)C1OC(=O)C1=CC(O)=C(O)C(O)=C1 NLDMNSXOCDLTTB-UHFFFAOYSA-N 0.000 description 1
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- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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- D10B2505/04—Filters
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Description
平均繊維径0.65μmのガラスウール(B-06-F、Unifrax Co.製)を60部、平均繊維径2.44μmのガラスウール(B-26-R、Unifrax Co.製)を30部、平均繊維径6μm、カット長6mmのチョップドガラス繊維(EC-6-6-SP、Unifrax Co.製)10部をテーブル離解機にてpH3.0の酸性水を用いて離解し、原料スラリーを得た。次に、カチオン性バインダー樹脂(ボンコートSFC-54、DIC(株)製)100部、カチオン性フッ素樹脂(アサヒガードAG-E060、AGC(株)製)1.5部、カチオン性界面活性剤(カチオーゲンTMP、第一工業製薬(株)製)3.5部及び水を混合して固形分濃度1.8%に調製した含浸液を湿紙に含浸付与させ、130℃のロータリードライヤーを用いて乾燥させ、坪量70g/m2のエアフィルタ用濾材を得た。尚、濾材中の含浸成分の含有率は5.2%であった。
カチオン性バインダー樹脂(ボンコートSFC-54、DIC(株)製)100部、カチオン性フッ素樹脂(アサヒガードAG-E060、AGC(株)製)2部、カチオン性界面活性剤(カチオーゲンTMP、第一工業製薬(株)製)3部及び水を混合して固形分濃度1.8%に調製した含浸液を用いた以外は、実施例1と同様にして、坪量70g/m2のエアフィルタ用濾材を得た。尚、濾材中の含浸成分の含有率は5.2%であった。
カチオン性バインダー樹脂(ボンコートSFC-54、DIC(株)製)100部、カチオン性フッ素樹脂(アサヒガードAG-E060、AGC(株)製)3部、カチオン性界面活性剤(カチオーゲンTMP、第一工業製薬(株)製)2部及び水を混合して固形分濃度1.5%に調製した含浸液を用いた以外は、実施例1と同様にして、坪量70g/m2のエアフィルタ用濾材を得た。尚、濾材中の含浸成分の含有率は5.2%であった。
カチオン性バインダー樹脂(ボンコートSFC-54、DIC(株)製)100部、カチオン性フッ素樹脂(アサヒガードAG-E060、AGC(株)製)4部、カチオン性界面活性剤(カチオーゲンTMP、第一工業製薬(株)製)1部及び水を混合して固形分濃度1.2%に調製した含浸液を用いた以外は、実施例1と同様にして、坪量70g/m2のエアフィルタ用濾材を得た。尚、濾材中の含浸成分の含有率は5.2%であった。
カチオン性バインダー樹脂(ボンコートSFC-54、DIC(株)製)100部、ノニオン性フッ素樹脂(アサヒガードAG-E550D、AGC(株)製)2部、カチオン性界面活性剤(カチオーゲンTMP、第一工業製薬(株)製)3部及び水を混合して固形分濃度1.8%に調製した含浸液を用いた以外は、実施例1と同様にして、坪量70g/m2のエアフィルタ用濾材を得た。尚、濾材中の含浸成分の含有率は4.0%であった。
平均繊維径0.65μmのガラスウール(B-06-F、Unifrax Co.製)を60部、平均繊維径2.44μmのガラスウール(B-26-R、Unifrax Co.製)を12部、平均繊維径6μm、カット長6mmのチョップドガラス繊維(EC-6-6-SP、Unifrax Co.製)10部、カット長5mmの芯/鞘がポリエステル/ポリエステルである芯鞘バインダー繊維(メルティ4080、ユニチカ(株)製)18部をテーブル離解機にてpH3.0の酸性水を用いて離解した以外は、実施例1と同様にして、坪量70g/m2のエアフィルタ用濾材を得た。尚、濾材中の含浸成分の含有率は5.1%であった。
カチオン性バインダー樹脂(ボンコートSFC-54、DIC(株)製)100部、カチオン性フッ素樹脂(アサヒガードAG-E060、AGC(株)製)2部、カチオン性界面活性剤(カチオーゲンTMP、第一工業製薬(株)製)3部及び水を混合して固形分濃度4.8%に調製した含浸液を用いた以外は、実施例1と同様にして、坪量70g/m2のエアフィルタ用濾材を得た。尚、濾材中の含浸成分の含有率は11.8%であった。
カチオン性バインダー樹脂(ボンコートSFC-54、DIC(株)製)及び水を混合して固形分濃度0.40%に調製した含浸液を用いた以外は、実施例1と同様にして、坪量70g/m2のエアフィルタ用濾材を得た。尚、濾材中の含浸成分の含有率は5.5%であった。
カチオン性バインダー樹脂(ボンコートSFC-54、DIC(株)製)100部、カチオン性界面活性剤(カチオーゲンTMP、第一工業製薬(株)製)5部及び水を混合して固形分濃度2.0%に調製した含浸液を用いた以外は、実施例1と同様にして、坪量70g/m2のエアフィルタ用濾材を得た。尚、濾材中の含浸成分の含有率は5.2%であった。
カチオン性バインダー樹脂(ボンコートSFC-54、DIC(株)製)100部、カチオン性フッ素樹脂(アサヒガードAG-E060、AGC(株)製)1部、カチオン性界面活性剤(カチオーゲンTMP、第一工業製薬(株)製)4部及び水を混合して固形分濃度2.0%に調製した含浸液を用いた以外は、実施例1と同様にして、坪量70g/m2のエアフィルタ用濾材を得た。尚、濾材中の含浸成分の含有率は5.2%であった。
カチオン性バインダー樹脂(ボンコートSFC-54、DIC(株)製)100部、カチオン性フッ素樹脂(アサヒガードAG-E060、AGC(株)製)4.5部、カチオン性界面活性剤(カチオーゲンTMP、第一工業製薬(株)製)0.5部及び水を混合して固形分濃度1.1%に調製した含浸液を用いた以外は、実施例1と同様にして、坪量70g/m2のエアフィルタ用濾材を得た。尚、濾材中の含浸成分の含有率は5.2%であった。
カチオン性バインダー樹脂(ボンコートSFC-54、DIC(株)製)100部、カチオン性フッ素樹脂(アサヒガードAG-E060、AGC(株)製)5部及び水を混合して固形分濃度1.1%に調製した含浸液を用いた以外は、実施例1と同様にして、坪量70g/m2のエアフィルタ用濾材を得た。尚、濾材中の含浸成分の含有率は5.5%であった。
カチオン性フッ素樹脂(アサヒガードAG-E060、AGC(株)製)60部、カチオン性界面活性剤(カチオーゲンTMP、第一工業製薬(株)製)40部及び水を混合して固形分濃度0.10%に調製した含浸液を用いた以外は、実施例1と同様にして、坪量70g/m2のエアフィルタ用濾材を得た。尚、濾材中の含浸成分の含有率は0.23%であった。
含浸の工程を除いた以外は、実施例1と同様にして、坪量70g/m2のエアフィルタ用濾材を得た。
カチオン性バインダー樹脂(ボンコートSFC-54、DIC(株)製)100部、カチオン性フッ素樹脂(アサヒガードAG-E060、AGC(株)製)3部、アニオン性界面活性剤(ハイテノール330T、第一工業製薬(株)製)2部及び水を固形分濃度1.5%となるように混合したところ凝集物を発生した。そのため、この含浸液を用いたエアフィルタ用濾材は作製しなかった。
アニオン性バインダー樹脂(ボンコートAN-1190S、DIC(株)製)100部、カチオン性フッ素樹脂(アサヒガードAG-E060、AGC(株)製)3部、カチオン性界面活性剤(カチオーゲンTMP、第一工業製薬(株)製)2部及び水を固形分濃度1.5%となるように混合したところ凝集物を発生した。そのため、この含浸液を用いたエアフィルタ用濾材は作製しなかった。
圧力損失は、有効面積100cm2のエアフィルタ用濾材に面風速5.3cm/秒で通風した際の差圧として、マノメーター(マノスターゲージWO81、(株)山本電機製作所製)を使用して測定した。
透過率は、ラスキンノズルで発生させた多分散ポリアルファオレフィン(PAO)粒子を含む空気が有効面積100cm2のエアフィルタ用濾材に面風速5.3cm/秒で通風した際の上流及び下流のPAO粒子の個数をレーザーパーティクルカウンター(KC-18、リオン(株)製)を用いて測定し、上流と下流の粒子数の比から求めた。対象粒子径は0.10~0.15μmとした。
PF値は、圧力損失及び粒子透過率の値から、数1に示す式を用いて計算した。対象粒子径は0.10~0.15μmとした。
ガーレー剛度は、ガーレーステフネステスター(熊谷理機工業(株)製)を用いて、試験幅1inch、試験長2inchの条件で測定した。
引張強度は、オートグラフAGX-S((株)島津製作所製)を用いて試験幅1inch、試験長100mm、引張速度15mm/minの条件で測定を行った。
撥水性は、MIL-STD-282に準拠して測定を行った。
Claims (5)
- ガラス繊維を含む湿式不織布からなるエアフィルタ用濾材において、
該濾材は、カチオン性のバインダー樹脂、ノニオン性又はカチオン性のフッ素樹脂及びカチオン性の界面活性剤を含み、かつ、アニオン性の界面活性剤を含まず、
前記フッ素樹脂と前記界面活性剤との固形分質量比率が30/70~80/20の範囲にあることを特徴とするエアフィルタ用濾材。 - 前記濾材に含まれる前記バインダー樹脂、前記フッ素樹脂及び前記界面活性剤を合計した固形分質量含有率は、濾材全体に対して2~12%であることを特徴とする請求項1に記載のエアフィルタ用濾材。
- 前記湿式不織布は、前記ガラス繊維として、繊維径が1~10μmのガラスウール繊維、繊維径が1μm未満のガラスウール繊維及び繊維径が4~30μmのチョップドガラス繊維を含むことを特徴とする請求項1又は2に記載のエアフィルタ用濾材。
- 前記濾材がバインダー繊維を更に含み、前記濾材に含まれる前記バインダー繊維の配合率は、濾材中の繊維の全繊維質量に対して、30質量%以下であることを特徴とする請求項1~3のいずれか一つに記載のエアフィルタ用濾材。
- ガラス繊維を含むスラリーを湿式抄紙法によりシート化して、湿潤状態のシートを形成する工程と、
前記湿潤状態のシートを、カチオン性のバインダー樹脂、ノニオン性又はカチオン性のフッ素樹脂及びカチオン性の界面活性剤を含み、かつ、アニオン性の界面活性剤を含まず、前記フッ素樹脂と前記界面活性剤との固形分質量比率が30/70~80/20の範囲にある水性分散液に含浸する工程と、
前記水性分散液に含浸した湿潤状態のシートを乾燥して、乾燥シートを得る工程と、を有することを特徴とするエアフィルタ用濾材の製造方法。
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JP2014221456A (ja) | 2013-05-13 | 2014-11-27 | 北越紀州製紙株式会社 | エアフィルタ用濾材及びその製造方法 |
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JP2010094580A (ja) | 2008-10-14 | 2010-04-30 | Hokuetsu Kishu Paper Co Ltd | エアフィルタ用濾材及びその製造方法 |
JP2013139661A (ja) | 2011-12-05 | 2013-07-18 | Nippon Valqua Ind Ltd | フッ素樹脂繊維の製造方法、エアフィルター用ろ材およびその製造方法 |
WO2014171165A1 (ja) | 2013-04-15 | 2014-10-23 | 北越紀州製紙株式会社 | エアフィルタ用濾材、その製造方法及びそれを備えるエアフィルタ |
JP2017013068A (ja) | 2013-04-15 | 2017-01-19 | 北越紀州製紙株式会社 | エアフィルタ用濾材及びそれを備えるエアフィルタ |
JP2014221456A (ja) | 2013-05-13 | 2014-11-27 | 北越紀州製紙株式会社 | エアフィルタ用濾材及びその製造方法 |
JP2016097336A (ja) | 2014-11-19 | 2016-05-30 | 日揮ユニバーサル株式会社 | エアフィルタ用濾材及びその製造方法 |
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