JP6273150B2 - 防カビエアフィルター濾材及び防カビエアフィルター - Google Patents
防カビエアフィルター濾材及び防カビエアフィルター Download PDFInfo
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- JP6273150B2 JP6273150B2 JP2013558686A JP2013558686A JP6273150B2 JP 6273150 B2 JP6273150 B2 JP 6273150B2 JP 2013558686 A JP2013558686 A JP 2013558686A JP 2013558686 A JP2013558686 A JP 2013558686A JP 6273150 B2 JP6273150 B2 JP 6273150B2
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- air filter
- mold
- filter medium
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- antifungal
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Classifications
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- B01D46/521—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
- D06M13/35—Heterocyclic compounds
- D06M13/352—Heterocyclic compounds having five-membered heterocyclic rings
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
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Description
(2)保水性高分子重合体、防カビ剤及びバインダー樹脂が添着された補強用不織布と、フィルター材とを貼り合わせてなる、上記(1)に記載の防カビエアフィルター濾材。
(3)保水性高分子重合体と防カビ剤の比率が、固形分重量比で、1:10〜500である、上記(1)又は(2)に記載の防カビエアフィルター濾材。
(4)防カビ剤とバインダー樹脂の比率が、固形分重量比で、1:0.5〜10である、上記(1)〜(3)のいずれかに記載の防カビエアフィルター濾材。
(5)トリアルキルアミノ塩基を有する親水性単量体が、2−ヒドロキシ−3−(メタ)アクリロイルオキシプロピルトリメチルアンモニウムクロライドである、上記(1)〜(4)のいずれかに記載の防カビエアフィルター濾材。
(6)バインダー樹脂が、アクリル樹脂である、上記(1)〜(5)のいずれかに記載の防カビエアフィルター濾材。
(7)上記(1)〜(6)のいずれかに記載の防カビエアフィルター濾材をプリーツ状に加工したプリーツ状濾材と、該プリーツ状濾材が収納される枠体とを備えた防カビエアフィルター。
また、バインダー樹脂を添着させているため、補強用不織布(裏打ち材)を構成する繊維の種類や形状などの影響を受けることなく、バインダー樹脂の作用で、防カビ剤をより強固に添着させることができる。空調設備を稼動して空気の流れが生じても、添着した防カビ剤の脱落を防ぐことができるため、長期間に亘って防カビ効果を発揮する。
なお、本発明において「防カビ」とは、カビの発生・育成・増殖を抑制することをいい、特に製品表面のカビの増殖を抑制することをいう。また、「抗菌」とは、微生物の発生・生育・増殖を抑制することをいい、特に製品表面の細菌の増殖を抑制することをいう。
以上の「防カビ」及び「抗菌」の定義については、文献「抗菌・防カビ技術」(株式会社東レリサーチセンター調査研究部門、2004年、p22)を参考とした。
この中でも、2−(メタ)アクリロイルオキシエチル−2'−(トリメチルアンモニオ)エチルホスフェートが好ましく、さらに2−(メタクリロイルオキシ)エチル−2'−(トリメチルアンモニオ)エチルホスフェート(略称:MPC)が入手性等の点で好ましい。
図2は、防カビ処理した補強用不織布(裏打ち材)2とフィルター材3を貼り合せた防カビエアフィルター濾材1をプリーツ状に折り込み、それを糸またはリボンセパレーター4で縛り、枠体(フレーム)5に固定した防カビエアフィルターの構成例である。6はガスケットを示す。
防カビエアフィルター濾材1を枠体5に固定する際、補強用不織布(裏打ち材)2を、濾過する風の流れに対し上流、下流のどちら側に配置しても構わないが、補強用不織布2がごみを捕捉することで、防カビエアフィルター濾材1の寿命を延ばすことができる点より、濾過する風の流れに対して上流側に配置することが好ましい。
また、補強用不織布(裏打ち材)とフィルター濾材との接着は、エチレンビニルアルコールのような粉末樹脂を補強用不織布(裏打ち材)とフィルター濾材との間に振りかけ、熱により融着する方法や一液硬化型ポリウレタンを接着剤として貼り合せる方法により行うことができる。
リン酸バッファー(pH7.4、20mM)を溶離液としたゲルパーミエーションクロマトグラフィー(GPC)により、UV(210nm)及び屈折率にて検出し、ポリエチレングリコールを標準として、重量平均分子量を求めた。
2−(メタクリロイルオキシ)エチル−2'−(トリメチルアンモニオ)エチルホスフェート(MPC);9.9g、2−ヒドロキシ−3−(メタクリロイルオキシ)プロピルトリメチルアンモニウムクロライド(QMA);19.6gをエタノール;180gに溶解し4つ口フラスコに入れ、30分間窒素を吹き込んだ後、50℃でアゾビスイソブチロニトリル;0.85gを加えて8時間重合反応させた。重合液を3リットルのジエチルエーテル中にかきまぜながら滴下し、析出した沈殿を濾過し、48時間室温で真空乾燥を行って、粉末を得た。GPCにより求めた重量平均分子量は、900,000であった。これをMPC1とする。
MPC;15.2g、QMA;12.9gとした以外は合成例1と同様の方法で重合反応させて粉末を得た。GPCにより求めた重量平均分子量は、820,000であった。これをMPC2とする。
MPC;19.3g、QMA;7.1gとした以外は合成例1と同様の方法で重合反応させて粉末を得た。GPCにより求めた重量平均分子量は、750,000であった。これをMPC3とする。
MPC;25.1g、QMA;2.4gとした以外は合成例1と同様の方法で重合反応させて粉末を得た。GPCにより求めた重量平均分子量は、650,000であった。これをMPC4とする。
MPC;26.5g、QMA;1.2gとした以外は合成例1と同様の方法で重合反応させて粉末を得た。GPCにより求めた重量平均分子量は、620,000であった。これをMPC5とする。
表1に示す保水性高分子重合体;0.5〜1.0重量部、3種類の防カビ剤(イミダゾール系防カビ剤13重量部、ピリジン系防カビ剤26重量部、イソチアゾリン系防カビ剤10.5重量部)、浸透剤;1重量部、アクリル樹脂(東洋インキ製);50重量部を、水に分散させ、防カビ組成物溶液(固形分濃度:5重量%)を調製した。
ポリエステル繊維15% ポリビニルアルコール繊維35% アクリルバインダー50%で構成した不織布(目付:60g/m2)を、上記防カビ組成物溶液に2秒間浸漬した後、150℃で70秒乾燥して、約4g/m2の防カビ組成物を添着させた補強用不織布(裏打ち材)を作製した。
エレクトレットポリプロピレンメルトブローン不織布(目付:20g/m2)をEVA(エチレン酢ビコポリマー)粉末を10g/m2 振りかけた上記補強用不織布(裏打ち材)に重ね、約130℃で加熱圧着して、防カビエアフィルター濾材を作製した。
防カビ組成物に保水性高分子重合体を配合しない以外は、実施例1と同様にして防カビエアフィルター濾材を作製した。
防カビ組成物に防カビ剤を配合しない以外は、実施例1と同様にして防カビエアフィルター濾材を作製した。
保水性高分子重合体及び防カビ剤を配合しない以外は、実施例1と同様にして防カビエアフィルター濾材を作製した。
実施例及び比較例で作製した防カビエアフィルター濾材を、オレフィン系ホットメルトシール剤でアルミフレーム(610×610×65mm)に固定してフィルターユニットを作製した。
作製したフィルターユニットを、製パン工場の外気導入フィルターとして設置し、90日間稼動後、菌の検出試験を実施した。フィルターの菌の検出は、裏打ち材を剥がしてフィルター材の表面に付着した埃を滅菌綿棒でふき取り採取し、埃の重量及び埃の中の菌数を測定した。(測定環境の平均温度:27℃、平均湿度:68%)
図3はフィールド試験の説明図であり、図3において、10はフィルター、11は埃を示す。
Aspergillus sp.(アスペルギルス属)、Cladosporium sp.(クラドスポリウム属)、Penicillium sp.(ペニシリウム属)、Alternaria sp.(アルタナリア属)を滅菌精製水で105cfu/mlに調整し、4種を混ぜて菌液にした。PDA培地に菌液を塗抹し、中心にフィルター試験片を添付し、25℃で2週間培養を行った。培養後、フィルター試験片の周囲のカビの発育阻止帯の大きさを測定した。
図4はPDA培地の説明図であり、図4において、20はフィルター試験片、21は試験片から溶出した防カビ剤等により菌の発育が阻止されたゾーン=発育阻止帯、22は培地の栄養分により菌が増殖する部分を示す。
2 補強用不織布
3 フィルター材
4 糸またはリボンセパレーター
5 フレーム(枠体)
6 ガスケット
Claims (7)
- 保水性高分子重合体、防カビ剤及びバインダー樹脂が添着されている防カビエアフィルター濾材であって、前記保水性高分子重合体が、下記式(1)で表されるホスホリルコリン類似基含有単量体とトリアルキルアミノ塩基を有する親水性単量体との単量体組成物の共重合体であることを特徴とする防カビエアフィルター濾材。
- 保水性高分子重合体、防カビ剤及びバインダー樹脂が添着された補強用不織布と、フィルター材とを貼り合わせてなる、請求項1に記載の防カビエアフィルター濾材。
- 保水性高分子重合体と防カビ剤の比率が、固形分重量比で、1:10〜500である、請求項1又は2に記載の防カビエアフィルター濾材。
- 防カビ剤とバインダー樹脂の比率が、固形分重量比で、1:0.5〜10である、請求項1〜3のいずれかに記載の防カビエアフィルター濾材。
- トリアルキルアミノ塩基を有する親水性単量体が、2−ヒドロキシ−3−(メタ)アクリロイルオキシプロピルトリメチルアンモニウムクロライドである、請求項1〜4のいずれかに記載の防カビエアフィルター濾材。
- バインダー樹脂が、アクリル樹脂である、請求項1〜5のいずれかに記載の防カビエアフィルター濾材。
- 請求項1〜6のいずれかに記載の防カビエアフィルター濾材をプリーツ状に加工したプリーツ状濾材と、該プリーツ状濾材が収納される枠体とを備えた防カビエアフィルター。
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JP2010055021A (ja) * | 2008-08-29 | 2010-03-11 | Fujifilm Corp | 平版印刷版の作製方法 |
JP2011196638A (ja) * | 2010-03-23 | 2011-10-06 | Mitsubishi Paper Mills Ltd | 気化フィルター |
US9428714B2 (en) * | 2011-11-11 | 2016-08-30 | The Dial Corporation | Method of increasing the performance of cationic fabric softeners |
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US20150107203A1 (en) | 2015-04-23 |
CN104203366B (zh) | 2016-08-24 |
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US10173159B2 (en) | 2019-01-08 |
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