TW297062B - Nonwoven fabrics used as filter with polarization - Google Patents
Nonwoven fabrics used as filter with polarization Download PDFInfo
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- TW297062B TW297062B TW85101985A TW85101985A TW297062B TW 297062 B TW297062 B TW 297062B TW 85101985 A TW85101985 A TW 85101985A TW 85101985 A TW85101985 A TW 85101985A TW 297062 B TW297062 B TW 297062B
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^07062 A7 B7 五、發明説明(1 ) 〔發明背景〕 本發明係關於駐極化不織布濾器及其製造方法,尤其 是,做爲空氣濾器爲適合之駐極化禾織布濾器及其製造方 法。 〔關連技術之說明〕 習知做爲空調機器,空氣清淨機,掃除機,風扇加熱 器,0A機器,汽車廂房用空氣清淨器等機器之空氣濾器 ,爲去除環境雰圍中或導入於機器內之吸氣或排出於機器 外之排氣中之粉塵,媒煙,臭味物質,花粉等,使環境雰 圍清淨化,或爲調整機器之動作環境雰圍,可使用各種減 器。 在濾器方面,周知是使用駐極化之高分子薄膜或薄板 之各種濾器(日本專利特公昭5 9 — 2 5 6 1 2號公報, 同59 — 25613號公報,同59-25614號公報 ,同59 — 51323號公報,同60 -17235號公 報)。 經濟部中央標準局員工消費合作社印製 (請先閱讀背面之注意事項再填寫本頁) 又,將駐極化之樹脂薄膜開纖(opening )而形成 不織布狀者可照樣單獨或與其他構件複合作爲濾器利用之 技術已有揭示(日本專利特開昭5 5 — 1 3 2 6 1 5號公 報,日本專利特開昭55—134621號公報,日本專 利特公昭56 — 47299號公報)。 但是,駐極化不織布所成之濾器之一般傾向,會有初 期去除(scavenger )效率隨著時間經過而降低。更具 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) 經濟部中央標準局員工消費合作社印製 A7 B7 五、發明説明(2 ) 體而言,在駐極化不織布製造之後,測定粉塵之去除效率 時,可顯示非常高的效率,照樣暫時放置後,再次測定去 除效率時,與製造之後比較,常會見到去除效率降低之現 象。 又,習知之駐極化不織布*在做爲濾器使用時被要求 低壓力損失,而使用厚度薄或低密度者。因此,機械的強 度成爲不充分,在二次加工之際會有破裂•延伸產生之問 題。 〔發明概要〕 因此,本發明之第一目的係提供一種,做爲空氣濾材 極合適之駐極化不織布濾器,其顯示髙度去除效率,且由 於去除效率之長時間變化少,故可長期間發揮優異之去除 性能。 又,本發明之第二目的在於提供一種將前述駐極化不 織布濾材加工,以獲得機械強度優異,且具有高性能之嫌 器之方法》 爲達成前述第一目的,本發明係提供一種駐極化不織 布濾材,其爲選自(a)不飽和羧酸及其衍生物,(b) 不飽和環氧單體,及(c )具有烯烴性不飽和結合之矽院 單體所成群之至少一種變性劑予以一部份或全部變性,且 以含由該變性劑而來之構造單位0. 005〜5重量%之 無極性聚合物爲主成份之熱可塑性樹脂所組成駐極化薄膜 予以開變所得之開纖維所成之駐極化不織布濾材。 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) -----..-----^ 裝------訂------^ 妹 (請先閲讀背面之注意事項再填寫本頁) -5 - 經濟部中央標準局員工消費合作社印製 A7 ___B7 五、發明説明(3 ) 又,爲達成前述第2目的,本發明係提供一種駐極化 不織布濂材之製造方法,其爲選自(a )不飽和羧酸及其 衍生物,(b)不飽和環氧單體,及(c)具有烯烴性不 飽和結合之矽烷單體所成群之至少一種變性劑予以一部份 或全部變性,且以含由該變性劑而來之構造單位 0. 005〜5重量%之無極性聚合物爲主成份之熱可塑 性樹脂所組成之駐極化薄膜予以開纖所得之開纖維網( web )所成之駐極化不織布供給於壓花部之單位面稹爲 0. 05〜5mrrf,且壓花面積率爲2〜30%之壓花輥 輪,在不滿熱可塑性樹脂之軟化點的溫度下加熱,夾壓, 使駐極化不織布部份地熱融合而一體化之製程。 〔圖示之簡單說明〕 圓1爲在實施例及比較例中,說明去除效率測定所用 裝置之圊。 〔發明詳細說明〕 以下,詳細說明本發明駐極化不織布濾器(以下,稱 爲本發明之濾器)及其製造方法。 本發明之濾器中,駐極化不織布係將熱可塑性樹脂所 成之駐極化薄膜予以開繊所得平均繊維徑或平均繊維寬度 爲8 0 以下,較佳爲1 0〜7 0 4m之開纖維所成者 。在本發明,平均纖維徑或平均纖維寬度係採用適當量( 1 0 0根以上)之纖維,攝下3 0信之顯微鏡照片’以尺 本紙張尺度適用中國國家標準(CNS ) A4規格(2丨0〆297公釐) (請先閲讀背面之注意事項再填寫本頁) 裝· 訂 2 妁 062 A7 _B7 _ 五、發明説明(4 ) 測定該照片中每一根織維,並依下式計算: η Σ d± i = 1 平均纖維徑(寬度)=- η di :繊維徑(寬度),η:總纖維數 又,該駐極化不織布,壓紋(plating )量爲 10〜15〇g/m·,較佳爲1〇〜50g/ma時,可 發揮高度去除效率,極爲有效。 爲構成該駐極化不織布之開繅維原材料之熱可塑性樹 脂,具熱可塑性,且藉成形爲薄膜之駐極化處理而駐極化 ,若開纖維爲可行則無特別限制,可爲單獨一種或二種以 上之混合物。在本發明中,該熱可塑性樹脂以變性之無極 性聚合物爲主成份者較佳,例如可單獨爲一部份或全部被 變性之無極性聚合物,或含有極性聚合物亦可》 經濟部中央標準局員工消費合作社印製 (請先閲讀背面之注意事項再填寫本頁) 本發明所用之無極性聚合體,通常若爲不具極性之聚 合物則無特別限制,其多爲介電損耗(介電損耗角正切; tan5)爲 〇· 0005 以下(ASTM D150, 6 0 Η z ),體積固有電阻(ASTM D 2 5 7 * 2 3 °C,相對濕度50%)在101β〜1〇2〇 Qcm範圍者 。該無極性聚合體之具體例,可爲聚乙烯,聚丙烯等聚嫌 烴,聚苯乙烯,聚四氟乙烯,四氟乙烯•六氟丙烯共聚物 等。 極性聚合體通常若爲具極性之聚合物則無特別限制, 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐)_ 7 經濟部中央標準局員工消費合作社印製 A7 B7 五、發明説明(5 ) 其多爲介電損耗超過0. 0005,又體積固有電阻亦多 在1012〜10le Ocm之範圍》該極性聚合體之具體 例爲可熔融成形,且可爲含有至少一種羧酸基,酯基,酿 胺基,羥基,醚基,睛基,羰基或氯原子等極性基之熱可 塑性樹脂,尤其是聚對苯二甲酸乙二酯,聚對苯二甲酸丁 二酯等聚酯、耐綸6、耐綸66、耐綸12等之聚醯胺、 聚碳酸酯、聚甲基丙烯酸甲酯、聚丙烯酸乙酯等之丙炔 系樹脂、丙烯—苯乙烯系樹脂(AS)樹脂、丙烯一丁二 烯一苯乙烯系樹脂(ABS樹脂)、聚氯乙烯、聚偏氯乙 烯、聚三氟氯乙烯、聚縮醛、聚丙烯睛等,該等可一種單 獨或二種以上使用。 又,前述變性之無極性聚合體爲選自(a )不飽和竣 酸及其衍生物,(b)不飽和環氧單體,及(c)具有嫌 烴性不飽和結合之矽烷單體所成群之至少一種變性劑所變 心生之無極性聚合體。又,在本發明中,「變性」之意義 係使變性劑導入無極性聚合物分子內之主鏈或側鏈,例如 ,相對於構成無極性聚合物之單體,係使前述變性劑成爲 隨機共聚物或成爲嵌段共聚合,或使變性劑接枝共聚合於 無極性聚合物者。 (a )不飽和羧酸或其衍生物,有例如丙烯酸,甲基 丙烯酸’ α -乙基丙烯酸、順丁烯二酸、反式丁烯二酸、 衣康酸、檸康酸、四氫酞酸、甲基四氫酞酸、內向型順式 二環〔2. 2. 1〕庚基_5_烯—2,3 -二羧酸(奈 吉酸(nazic acid ) ®)、甲基-內向型順式二環〔2 本紙張尺度適财關家標準(CNS ) A4^fe· ( 21GX297讀)_ s _ (請先閱讀背面之注意事項再填寫本頁) 裝. 訂 線 A7 A7 (1) B7 五、發明説明(6 ) 2 . 1〕庚基一 5 —烯—2,3—二羧酸(奈吉酸甲酯 ® )等之不飽和二羧酸。該不飽和二羧酸之酸鹵化物、醢 胺、亞氨、酸酐 '酯等之不飽和二羧酸之衍生物等。不飽 和二羧酸衍生物之具體例有例如氯化馬來醯、馬來醢胺、 無水馬來酸、無水檸康酸酐、馬來酸一甲酯、馬來酸二甲 酯等。其中以不飽和二羧酸或其酸酐較佳,特別是馬來酸 、奈吉酸或該等之酸酐爲最佳。 (b)不飽和環氧單體係一分子中各有一個以上可聚 合之不飽和結合及環氧基之單體。該(b )不飽和環氧單 體有例如下述式(1 ): 〇 〇 II / \ R-C—0—CH?—CH—CH; (在此,R爲具有可聚合乙烯性不飽和結合之碳化氫基) 所示之不飽和縮水甘油酸酯類,式(2 ): 1,—^-----^裝------訂------^ (請先閱讀背面之注意事項再填寫本頁) 經濟部中央標準局員工消費合作社印製 R—X—CH〇-CH—CH; (2) (在此,R爲與式(1 )相同基,X爲一 CHj^O — 或 一所示之二價基) 所示之不飽和縮水甘油酸醚類,及一般式(3 ) 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) 經濟部中央標準局員工消費合作社印製 A7 B7 五、發明説明(7 ) R1^ 07062 A7 B7 V. Description of the invention (1) [Background of the invention] The present invention relates to an electret non-woven filter and its manufacturing method, in particular, an electret and woven filter suitable as an air filter and its manufacturing method . [Explanation of related technologies] Conventional air filters for air conditioners, air cleaners, sweepers, fan heaters, 0A machines, air cleaners for car compartments, etc. are used to remove the ambient atmosphere or introduce them into the machine. Dust, medium smoke, odorous substances, pollen, etc. that are inhaled or discharged into the exhaust outside the machine can clean the environment, or to adjust the operating environment of the machine, various reducers can be used. In terms of filters, it is known that various filters using electret polarized polymer films or thin plates (Japanese Patent Laid-Open No. 5 9-2 5 6 12 2, same as 59-25613, same as 59-25614, same 59-51323, same as 60-17-17). Printed by the Employee Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs (please read the precautions on the back before filling in this page). Also, if the electret resin film is opened to form a nonwoven fabric, it can be used alone or combined with other components The technology used as a filter has been disclosed (Japanese Patent Laid-Open No. 55-1 3 2 6 15, Japanese Patent Laid-Open No. 55-134621, Japanese Patent No. 56-47299). However, the general tendency of filters made of electret non-woven fabrics is that the initial removal efficiency (scavenger) decreases with time. In accordance with this paper standard, the Chinese National Standard (CNS) A4 specification (210X297 mm) is applied. The A7 B7 is printed by the Employee Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs. 5. Description of the invention (2) After the manufacture of the non-woven polarized fabric, When measuring the removal efficiency of dust, it can show a very high efficiency. When the removal efficiency is measured again after being temporarily placed, it is often seen that the removal efficiency decreases compared with after the manufacturing. Moreover, the conventionally-known electret non-woven fabric * is required to use a filter with a low pressure loss when used as a filter, and a thinner or lower density is used. Therefore, the mechanical strength becomes insufficient, and there is a problem of cracking and elongation during the secondary processing. [Summary of the Invention] Therefore, the first object of the present invention is to provide an electret non-woven filter which is very suitable as an air filter material, which exhibits high removal efficiency, and since the removal efficiency changes little over a long time, it can be used for a long period of time. Exert excellent removal performance. In addition, the second object of the present invention is to provide a method of processing the aforementioned electret non-woven filter material to obtain an excellent mechanical strength and a high-performance suspect. To achieve the aforementioned first object, the present invention provides an electret Nonwoven filter material, which is at least selected from the group consisting of (a) unsaturated carboxylic acid and its derivatives, (b) unsaturated epoxy monomer, and (c) silicon monomer with olefinic unsaturated bond A denaturant is partially or fully denatured, and an electret film composed of a thermoplastic resin containing a structural unit of 0.005 to 5 wt% of a non-polar polymer as a main component is opened An electret non-woven filter material made from the resulting open fibers. The size of this paper is applicable to the Chinese National Standard (CNS) A4 specification (210X297mm) -----..----- ^ Packing ------ order ------ ^ sister (please read first (Notes on the back and then fill out this page) -5-A7 ___B7 printed by the Employee Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economy V. Description of the invention (3) In addition, in order to achieve the aforementioned second object, the present invention provides an electrified non-woven fabric. The manufacturing method of the material is at least one selected from the group consisting of (a) unsaturated carboxylic acid and its derivatives, (b) unsaturated epoxy monomer, and (c) silane monomer having an olefinic unsaturated bond A denaturant is partially or fully denatured, and an electret film composed of a thermoplastic resin containing a structural unit of 0.005 to 5 wt% of a non-polar polymer as a main component is given The perforated nonwoven fabric formed by opening the fiber web (web) obtained by fiber opening is supplied to the embossing unit with a unit surface grain of 0.05 to 5 mrrf, and an embossing roller with an embossing area ratio of 2 to 30%. Heating at a temperature dissatisfied with the softening point of the thermoplastic resin and pressing, the partially polarized nonwoven fabric is thermally fused and integrated Cheng. [Brief description of the figure] Circle 1 is a graph illustrating the device used in the removal efficiency measurement in Examples and Comparative Examples. [Detailed Description of the Invention] Hereinafter, the electret non-woven fabric filter of the present invention (hereinafter, referred to as the filter of the present invention) and its manufacturing method will be described in detail. In the filter of the present invention, the electret non-woven fabric is an open fiber obtained by opening an electret film made of thermoplastic resin with an average fiber diameter or average fiber dimension of less than 80, preferably 10 to 7 0 4m open fiber The person who made it. In the present invention, the average fiber diameter or the average fiber width is an appropriate amount (100 or more) of fibers, and a photo of the 30 letter of the microscope is taken. The Chinese national standard (CNS) A4 specification is applied to the ruler paper size (2 丨0〆297mm) (Please read the precautions on the back before filling in this page) Binding · Order 2 妁 062 A7 _B7 _ V. Description of the invention (4) Determine each texture in the photo and calculate according to the following formula : Η Σ d ± i = 1 Average fiber diameter (width) =-η di: dimensional diameter (width), η: total number of fibers, the electret non-woven fabric, the amount of embossing (plating) is 10 ~ 15〇g / m ·, preferably 10 to 50 g / ma, can exhibit high removal efficiency and is extremely effective. The thermoplastic resin that constitutes the open-reel raw material of the electret non-woven fabric is thermoplastic, and is electretized by electret treatment formed into a thin film. If the open fiber is feasible, there is no particular limitation, and it can be a single type. Or a mixture of two or more. In the present invention, the thermoplastic resin is preferably a denatured non-polar polymer as the main component, for example, it may be a non-polar polymer that is partially or completely denatured, or may contain a polar polymer. Printed by the Consumer Cooperative of the Central Bureau of Standards (please read the precautions on the back before filling out this page) The non-polar polymer used in the present invention is usually not particularly limited if it is a non-polar polymer, and it is mostly dielectric loss Dielectric loss tangent; tan5) is below 0.0005 (ASTM D150, 6 0 Η z), the volume inherent resistance (ASTM D 2 5 7 * 2 3 ° C, relative humidity 50%) is 101β ~ 10〇2〇 Qcm range. Specific examples of the non-polar polymer include polyhydrocarbons such as polyethylene and polypropylene, polystyrene, polytetrafluoroethylene, tetrafluoroethylene • hexafluoropropylene copolymer, and the like. Polar polymers are generally not limited if they are polar polymers. The paper size is applicable to the Chinese National Standard (CNS) A4 (210X297 mm) _ 7 A7 B7 printed by the Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economy V. Inventions Explanation (5) Most of them are dielectric loss exceeding 0.005, and the volume inherent resistance is also in the range of 1012 ~ 10le Ocm. The specific example of the polar polymer is melt-formable, and may contain at least one carboxylic acid group , Ester groups, amino groups, hydroxyl groups, ether groups, eye groups, carbonyl groups or chlorine atoms and other polar thermoplastic resins, especially polyethylene terephthalate, polybutylene terephthalate and other polyesters , Nylon 6, Nylon 66, Nylon 12, etc. Polypropylene, polycarbonate, polymethyl methacrylate, polyethyl acrylate and other propyne-based resins, propylene-styrene-based resin (AS) resins , Propylene-butadiene-styrene resin (ABS resin), polyvinyl chloride, polyvinylidene chloride, polychlorotrifluoroethylene, polyacetal, polypropylene eye, etc., these can be used alone or in two or more . In addition, the denatured non-polar polymer is selected from (a) unsaturated acid and its derivatives, (b) unsaturated epoxy monomers, and (c) silane monomers with a combination of hydrocarbon-like unsaturated bonds A non-polar polymer transformed by groups of at least one denaturant. Furthermore, in the present invention, the meaning of "denaturation" is to introduce the denaturant into the main chain or side chain of the molecule of the non-polar polymer, for example, to make the denaturant random relative to the monomer constituting the non-polar polymer The copolymer is either a block copolymerization, or a denaturant is graft copolymerized to a non-polar polymer. (a) Unsaturated carboxylic acid or its derivatives, such as acrylic acid, methacrylic acid, α-ethyl acrylic acid, maleic acid, trans-butenedioic acid, itaconic acid, citraconic acid, tetrahydrophthalide Acid, methyltetrahydrophthalic acid, inward cis-bicyclo [2.1.1] heptyl_5_ene-2,3-dicarboxylic acid (nazic acid ®), methyl- Inward-looking cis-two-ring [2 paper standard suitable for financial security standards (CNS) A4 ^ fe · (21GX297 read) _ s _ (please read the precautions on the back before filling out this page). Binding. A7 A7 ( 1) B7 V. Description of the invention (6) 2.1) Unsaturated dicarboxylic acids such as heptyl-5-en-2,3-dicarboxylic acid (methyl nicotinate®). Unsaturated dicarboxylic acid derivatives such as acid halides, amides, imines, and anhydride esters of the unsaturated dicarboxylic acids. Specific examples of the unsaturated dicarboxylic acid derivatives include maleic chloride, maleic amine, anhydrous maleic acid, anhydrous citraconic anhydride, monomethyl maleate, and dimethyl maleate. Among them, unsaturated dicarboxylic acids or anhydrides thereof are preferred, and maleic acid, nagic acid, or anhydrides thereof are particularly preferred. (b) There is more than one polymerizable unsaturated bond and epoxy monomer in one molecule of unsaturated epoxy single system. The (b) unsaturated epoxy monomer has, for example, the following formula (1): 〇〇II / \ RC—0—CH? —CH—CH; (Here, R is a polymerizable ethylenically unsaturated bond Hydrocarbon group) Unsaturated glycidyl esters shown, formula (2): 1, — ^ ----- ^ installed ------ ordered ------ ^ (please read the back first Please fill in this page again) R—X—CH〇-CH—CH printed by the Employee Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs; (2) (Here, R is the same base as formula (1), X is a CHj ^ O — or one of the divalent groups shown) Unsaturated glycidyl ethers shown, and the general formula (3) This paper scale is applicable to China National Standard (CNS) A4 specification (210X297 mm) Central Standard of the Ministry of Economic Affairs A7 B7 printed by the Bureau ’s Consumer Cooperative V. Description of the invention (7) R1
I R~C—CH2 V ( 3 ) ......................----------…… . 所示之環氧鏈烯類等。 該(b)不飽和環氧單體之具體例有:縮水甘油丙酸 酯、縮水甘油甲酸酯、衣康酸之單及二縮水甘油酯、丁嫌 三羧酸之單、二及三縮水甘油酯、檸康酸之單及二縮水甘 油酯、內向型順式二環〔2. 2. 1〕庚基一5 —烯一2 ’ 3 -二羧酸(奈吉酸®)之單及二縮水甘油酯,內向型 順式二環〔2,2. 1〕庚基一5 —烯一2 —甲基一 2, 3 -二羧酸(甲基奈吉酸®)之單及二縮水甘油酯、烯丙 基琥珀酸之單及二縮水甘油酯、P —苯乙烯羧酸之縮水甘 油酯、烯丙基縮水甘油醚、2甲基烯丙基縮水甘油醚、苯 乙烯一 P —縮水甘油醚、3,4 —環氧基一1 一 丁烯、3 ,4 —環氧基一 3 —甲基一 1 一 丁烯、3,4 —環氧基一 1 一戊烯、3,4 一環氧基一3 —甲基一 1—戊烯、5 , 6 —環氧基一1 —己烯、乙烯環己烯單氧化物等。其中以 縮水甘油丙酸酯、搞水甘油甲酸酯最隹。 (c )具有烯烴性不飽和結合之矽烷單體,尤其是與 烯烴性不飽和結合同時具有可水解之有機基的矽烷單體較 佳,例如下述一般式(4)〜(6): R 1 R 2 S i Y 1 Y 2 (4) ---------ί 裝------訂------{線 (請先閱讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準(CNS)A4規格( 210X297公釐)_ _ A 7 B7 (5 (6 五、發明説明(8 ) R 1 X S i Y 1 Y 2 所示者。在前述式(4)〜(6)中,R1及R2可以丰f 月石或相異,具有烯烴性不飽和結合,爲碳、氫及任意泛 氧所成之一價基。X爲不具烯烴性不飽和結合之有機基, 例如爲一價碳化氫基之甲基、乙基、丙基、十四基、十/1 基、苯基、笮基、甲苯基等基團、又,該等基爲鹵素基® 代碳化氫基亦可。Y1 ' Y 2 、Y3各爲相同或相異之π 水解基,具體例爲甲氧基、乙氧基、丁氧基、甲氧乙氧Ϊ 等之烷氧基、烷氧烷氧基、甲醯氧基、乙醯氧基、丙醯摩 基等之醯氧基、肟,例如: -0N = (CCH3) 2 、 -on = chch2c2h5 及 -ο N = ( C C 6H 5 ) 2 等所表示之基,或取代胺基及芳胺基,例如: -N H C Η 3 ' —N H C 2Η 5 及 —Ν Η ( C βΗ 5 ) 所表示之基等,又,例如其他任意水解所得之有機基 本紙張尺度適用中國國家標準(CNS ) A4規格(210X 297公釐) -----'------^裝------訂------^練 (請先閲讀背面之注意事項再填寫本頁) 經濟部中央標準局員工消費合作社印製 11 - 經濟部中央標準局員工消費合作社印製 A7 B7 五、發明説明(9 ) 前述式(4)〜(6)之R1 、R2所表示基之具體 例有乙烯基、烯丙基、丁烯基、環己烯基、環戊二烯基等 ,尤其是末端烯烴性不飽和基爲佳。其他較佳例則有末端 不飽和酸之酯結合: C Η 2 = C ( C Η 2 ) COO ( C Η 2 ) 3-C Η 2 = C ( C Η a ) COO ( C H 2 ) 2-0-(c H 2) 3- C H 2 = C ( C H 2 ) C00CH2CH (OH) C H 2 0 ( C H 2) 3- 等之基。在該等基中,乙烯基爲最佳。 作爲該(c )烯烴性不飽和結合之矽烷單體,以式: R 1 S i γ 1 γ 2 γ 3 所示之化合物爲佳,尤其是Y1 ' Y 2 、Y3所示基爲相 同之有機矽化合物爲佳。在其中,乙烯參烷氧矽烷最佳, 例如乙烯三甲基矽烏、乙烯參(甲氧基乙氧基)矽烷等。 又,乙烯甲基二乙氧矽烷、乙烯苯基二甲氧矽烷等亦可同 樣使用。 在本發明中,變性之無極性聚合物,尤其是使變性劑 接枝共聚合於無極性聚合物爲佳。使變性劑接枝共聚合於 無極性聚合物,在製造接枝共聚物,亦即變性無極性窣合 本紙張尺度適用中國國家標準(CNS ) Α4規格(210X297公釐) 1〇 --------^ 裝------訂-----‘辣 (請先閲讀背面之注意事項再填寫本頁) 經濟部中央標準局員工消費合作社印製 A7 B7五、發明説明(ίο) 物之場合,可採用周之各種佑方法,並無特別限制。例如 使無極性聚合物焙融後,添加變性劑使接枝共聚合之方法 ,或使無極性聚合物溶解於溶媒,添加變性劑而接枝共聚 合之方法。在任何方法中爲有效率的接枝共聚合,則在自 由基聚合開始劑之存在下實施反應較佳。 自由基聚合開始劑有例如有機過氧化物、有機過酸酯 、偶氮化合物等。又,在反應時,以電離性放射線、紫外 線等照射亦可產生自由基。 在本發明中,變性之無極性聚合物可由前述不飽和羧 酸及其衍生物、(b)不飽和環氧單體、或(C)由具有 烯烴性不飽和結合之矽烷單體之變性劑之任一種予以變性 之無極性聚合物之單獨一種亦可、2種以上之組合亦可, 再者,在一分子內具有由(a) ,(b)或(c)之二種 以上所變性之部位亦可。 變性之無極性聚合物中,來自變性劑構造單位之含有 率爲0. 005〜10重量%,較佳爲0. 01〜5重量 此構造單位之含有率超過5重童%,使用變性之無極 性聚合物,製造駐極化薄膜及駐極化不織布濾材,使電荷 密度飽和,而可期待駐極化性能更爲增大。又,超過2 0 重量%時,薄膜之成形困難。 在本發明中,製造駐極化薄膜所用之熱可塑性樹脂中 ,一部份或全部爲變性之無極性聚合物之含量,在6 0重 量%以上,最好爲8 0重量%以上。又,該熱可塑性樹脂 (請先閱讀背面之注意事項再填寫本頁) 裝. 訂 ύ. 本紙張尺度適用中國國家標準(CNS ) Α4規格(210Χ297公釐) -13 - A7 A7 經濟部中央標準局員工消費合作社印製 B7 五、發明説明(11) 在含有極性聚合物之場合,其含量爲4 0重量%以下,較 佳爲2 0重量%以下》 再者,在本發明中,所使用之熱可塑性樹脂,除了前 述無極性聚合物,無極性聚合物及變性之無極性聚合物以 外,可因應需要,例如可添加耐熱安定劑、耐候安定劑、 增滑劑、防粘連劑、潤滑劑、無機或有機之填充劑、染料 、顔料等。 在本發明中,駐極化不織布之製造,係使前述熱可塑 性樹脂成形爲薄膜狀,進行或不進行延伸,一面加熱一面 進行荷電處理以製造駐極化薄膜。其次,使該駐極化薄膜 開變而得到開嫌維,可依照使開纖維形成不織布狀之方法 進行。使熱可塑性樹脂成形成薄膜狀之方法並無特別限制 ,通常,從此種樹脂成形薄膜之方法的任一方法都可適用 。例如吹塑薄膜成形法,使用T-膜之擠壓成形法,輥輪 軋製之方法等。又,在進行延伸時,延伸處理通常在構成 薄膜之高分子化合物之軟化點以上融點以下,例如,加熱 至110〜150組成物左右,使用輥輪,熱板,爐等, 在薄膜之縱方向進行。此時,延伸倍率爲通常之5〜1 0 倍左右,成形安定性良好,及其之開纖爲容易起見,以6 〜8倍左右較佳。 駐極化處理在薄膜成形時進行亦可,在駐極化成形後 使該不織布藉駐極化方法進行亦可。在此,在薄膜成形時 進行駐極化之場合,由於駐極化之效率佳,故去除性能與 成形後不織布駐極化之情形比較爲良好,故較佳。 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) (請先閲讀背面之注意事項再填寫本頁) 裝- 訂 經濟部中央標準局員工消費合作社印製 A7 B7五、發明説明(12) 駐極化係可在不織布或薄膜上施加直流電壓。所施加 之直流電壓值可因應使用之電極形狀,電極間距離等,或 駐極化不織布所要求之帶電電荷量、處理速度等適當選擇 。例如,電極間距離爲8mm之情形,可至少施加 —5kV,最好是_6--20kV之直流電壓於不織布 〇 直流電壓之施加可依任何方法進行,並無特別限制。 例如使不織布或薄膜通過施加有直流電壓之一對電極間之 方法;在不織布表面施加電暈放電或脈衝狀高電壓之方法 ;以其他電介質保持不織布表裏兩面,而在兩面施加直流 髙電壓之方法等任意方法均可。 壓花輥輪之加熱·夾壓處理中之溫度爲未滿熱可塑性 樹脂軟化點之溫度,較佳爲比軟化點低5〜5 0°C之溫度 ,更佳爲比較化點低2 0〜3 0°C之溫度。超過熱可塑性 樹脂軟化點之溫度下進行壓花輥輪之處理時,對駐極化不 織布機械強度之改善爲有效,但有駐極化不織布保持之電 荷流失之虞。又在比軟化點之5 0°C以上之溫度下進行壓 花輥輪之處理時,會有無法得到具有充分機械強度之駐極 化不織布之虞。例如使用聚丙烯作爲熱可塑性樹脂之駐極 化不織布,其軟化點約1 5 5°C,而壓花輥輪之加熱•夾 壓處理係在1 0 0〜1 5 0°C左右之溫度進行,最佳爲 1 1 5〜1 3 5°C左右之溫度下進行。藉由該壓花輥輪之 加熱•夾壓處理,使駐極化不織布軟化,遍及全面熱融合 ,而發現所定之機械強度。此時僅在擋接於駐極化不織布 (請先閲讀背面之注意事項再填寫本頁) -裝· 訂 線 本紙張尺度適用中國國家標準(〇阳)八4規格(2丨0/297公釐)_15_ 經濟部中央標準局員工消費合作社印製 A7 B7 五、發明説明(13 ) 的壓花輥輪之凸部而被加壓之表面(壓花表面)熔融,而 在不擋接於凸部之表面(非壓花部)及內部,電荷維持被 捕獲狀態,可得到具有優異去除性能之駐極化不織布濾器 。又,在壓花輥輪之加熱•夾壓處理時,構成熔融駐極化 不織布之開織維進入非熔融部,駐極化不織布被強固地一 體化,.對自行發塵防止爲有效。 本發明中,用於加熱•夾壓處理之壓花輥輪係壓花部 單位面積爲0. 05〜5m πί ,較佳是0. 1〜3mnf ,且壓花面積率爲2〜3 0%,較佳是3〜1 0%者。又 ,每一單位面積之壓花數爲0.1〜1. 5個/mirf左 右,再者,壓花部之形狀爲具有高度0 . 1〜1. 0mm 之台形、矩形等剖面形狀,且頂部爲具有圓形,矩形、正 方形、菱形等形狀。使用此壓花輥輪形成對應於駐極化不 織布之壓花部。濾器之壓花率即相對於濾器全表面之壓花 部之比率爲2〜3 0%,較好爲3〜1 0%。濾器之壓花 率超過3 0%時,壓力損失會增大,且由於濾器之塵埃捕 捉能力降低並不佳,一方面*未滿2%時,由於網之一體 化並不充分故亦不佳。 藉由壓花輥輪之加壓•夾壓處理使駐極化不織布一體 化而製造成片狀之本發明濾器,通常在1〜2 〇m/m η 之捲繞速度下捲繞成捲筒狀。 本發明之濂器具有高度去除效率,其去除效率之長時 間安定性優異,同時,駐極化不織布與網狀物之接觸部遍 及全面被熱熔合而具有一體化構造,機械強度優異。因此 本紙張尺度適用中國國家標準(CNS)A4規格( 210X297公釐)_ 16 _ (請先閱讀背面之注意事項再填寫本頁) 裝· 訂 A7 2W〇62 _ B7 五、發明説明(14) ’本發明之濾器在二次加工時不會產生破裂、延伸等,二 次加工時之處理性優異。 又,根據本發明駐極化不織布濾材之製造方法,並不 會使駐極化不織布所有之電荷損失,由於可製造前述構造 之濾材,故爲有效。 實施例 以下,本發明係藉實施例及比較例更具體地說明,但 本發明並不受該等實施例所限制。 又,實施例及比較例所進行之去除效率,保持率及壓 力損失之測定,可依下述方法進行。 (a )去除效率,保持率 使用圖1所示之測定裝置測定去除效率。首先霧劑產 生機(日本科學工業公司製)1供給NaCi粒子(粒徑 :0. 3#m),同時,使通過空氣濾器2之清淨空氣供 給室3。室3內之NaCj?粒子濃度成爲一定濃度(2〜 6xlOe個)後,使鼓風機4動作,室3內之氣體通過 流通通路5,以流量調整閥6 —面調整流量並吸引之。藉 流速計7所測定之通過風速成爲一定速度(1. Om/ s e c )時,配設於流通通路5,爲測定對象之駐極化不 織布濾材8之上流側及下流側中之N a C j?粒子濃度 C i η及Cou t ,藉粒子計數器(Ri on公司製, KC 一 0 1 B) 9 a及9b,而分別測定之。根據測定結 (請先閱讀背面之注意事項再填寫本頁) 裝. 訂 線_ 經濟部中央標準局員工消費合作社印製 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) ~ 17 - 經濟部中央標準局員工消費合作社印製 A7 B7 五、發明説明(15) 果,可依下式求得去除效率。 去除效率=〔l-(Cout/Cin)〕xl〇〇 (% ) 又,使此時之去除效率爲初期值Ει ,使相同之駐極 化不織布濾材,在60°C’相對濕度:80%,在48小 時加速試驗後,再度測定去除效率E2 ,依下式求得去除 效率之保持率。 保持率=(E2/E1) X100 (%) (b )壓力損失 在圚1所示之測定裝置中,利用差式壓力計1 〇在通 過風速1 · 〇m/s e c時,測定駐極化不織布濾器8之 上流側及下流側之壓力損失。 (實施例1〜3,比較例1〜2) (駐極化不織布之製造) 使表1所示之配合原料樹脂或原料樹脂混合物,使用 吹塑薄膜成形機(東芝機械(公司)製,3 0 擠 壓機,80mm</>模),成形溫度:240 °C,擠壓機螺 旋旋轉數:在5 4 r pm之成形條件下成形,將所得到彎 曲寬3 5 Omm,厚度3 0〜4 0 //m之管狀薄膜兩端連 續地切斷,以製造寬度3 0 Omm之兩張薄膜。 J n ί 裝 訂 ^練 (請先閱讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準(CNS ) Α4規格(210X29*7公釐) _ 18 _ B7 五、發明説明(16) 將所得之薄膜,在溫度:110〜120 °C下,以約 6〜8倍之延伸倍率下作輥輪延伸,成爲厚度1 1 0〜2 〇em之延伸薄膜》 在該延伸薄膜上,在下述條件下藉電晕放電進行駐極 化處理,以得到駐極化薄膜》 施加電壓:12kV(直流)IR ~ C—CH2 V (3) ......................------------....... Epoxy chain shown Olefins, etc. Specific examples of the (b) unsaturated epoxy monomers are: glycidyl propionate, glycidyl formate, itaconic acid mono- and diglycidyl esters, butane tricarboxylic acid mono-, di- and tri-glycosides Mono- and diglycidyl esters of glycerides, citraconic acid, inward-oriented cis-bicyclo [2.1.1] heptyl- 5-ene-1 2 '3 -dicarboxylic acid (NAG) ® and Diglycidyl ester, inward cis-bicyclo [2,2. 1] heptyl-5-pentene-2-methyl-2,3-dicarboxylic acid (methyl-nagiic acid®) mono- and di-shrinkage Glycerol esters, mono- and diglycidyl esters of allyl succinic acid, glycidyl esters of P-styrene carboxylic acid, allyl glycidyl ether, 2methylallyl glycidyl ether, styrene-P-glycidyl Glycerol ether, 3,4-epoxy-1-butene, 3,4-epoxy-3-methyl-1-butene, 3,4-epoxy-1-pentene, 3,4 An epoxy group 3-methyl-1-pentene, 5, 6-epoxy group 1-hexene, ethylene cyclohexene single oxide and so on. Among them, glycidyl propionate and glycidyl formate are the most popular. (c) Silane monomer having an olefinic unsaturated bond, especially a silane monomer having a hydrolyzable organic group in combination with an olefinic unsaturated bond, such as the following general formulas (4) to (6): R 1 R 2 S i Y 1 Y 2 (4) --------- ί outfit ------ order ------ {line (please read the notes on the back before filling this page ) This paper scale applies the Chinese National Standard (CNS) A4 specification (210X297mm) _ _ A 7 B7 (5 (6 V. Description of the invention (8) R 1 XS i Y 1 Y 2 as shown in the above formula ( 4) ~ (6), R1 and R2 may be rich or different, with an olefinic unsaturated bond, a monovalent group formed by carbon, hydrogen and any ubiquitous oxygen. X is a non-olefinic unsaturated bond Organic groups such as methyl, ethyl, propyl, tetradecyl, deca / 1, phenyl, sulfanyl, tolyl and other groups of monovalent hydrocarbon groups, and these groups are halogen groups ® Substituted hydrocarbon groups are also possible. Y1 'Y2, Y3 are the same or different π hydrolysate groups, specific examples are alkoxy groups such as methoxy, ethoxy, butoxy, methoxyethoxy Ϊ, etc. , Alkoxyalkoxy, Methoxy, Acetyloxy, Propyl Acyloxy groups and oximes such as molybdenum, for example: -0N = (CCH3) 2, -on = chch2c2h5 and -ο N = (CC 6H 5) 2 etc., or substituted amine groups and arylamine groups, For example: -NHC Η 3 '—NHC 2Η 5 and —Ν Η (C βΗ 5) represented by the base, etc., and other organic base paper scales obtained by any arbitrary hydrolysis apply China National Standards (CNS) A4 specifications (210X 297 Mm) -----'------ ^ installed ------ order -------- ^ practice (please read the notes on the back before filling out this page) Central Bureau of Standards, Ministry of Economic Affairs Printed by Employee Consumer Cooperative 11-Printed by the Ministry of Economic Affairs, Central Standards Bureau Employee Consumer Cooperative A7 B7 V. Description of invention (9) Specific examples of the groups represented by R1 and R2 in the aforementioned formulas (4) to (6) are vinyl and vinyl Propyl, butenyl, cyclohexenyl, cyclopentadienyl, etc., especially terminal olefinic unsaturated groups are preferred. Other preferred examples are ester bonding of terminal unsaturated acids: C Η 2 = C ( C Η 2) COO (C Η 2) 3-C Η 2 = C (C Η a) COO (CH 2) 2-0- (c H 2) 3- CH 2 = C (CH 2) C00CH2CH (OH) CH 2 0 (CH 2) 3- such bases. In these bases Vinyl is the best. As the (c) olefinic unsaturated bonded silane monomer, the compound represented by the formula: R 1 S i γ 1 γ 2 γ 3 is preferred, especially Y1 'Y 2 and Y3 It is preferable that the bases are the same organosilicon compound. Among them, ethylene ginsane alkoxysilane is the best, such as ethylene trimethylsilicon, ethylene ginseng (methoxyethoxy) silane, etc. In addition, ethylene methyl diethoxysilane, vinyl phenyl dimethoxysilane, etc. can be used in the same manner. In the present invention, the denatured non-polar polymer, in particular, the denaturant is preferably graft copolymerized with the non-polar polymer. Graft copolymerization of denaturing agent to non-polar polymer, in the manufacture of graft copolymer, that is, denatured non-polarity conforms to the paper size, the Chinese National Standard (CNS) Α4 specification (210X297 mm) 1〇 ---- ---- ^ Installed ------ ordered ----- 'spicy (please read the notes on the back before filling in this page) A7 B7 printed by the Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economy V. Description of invention ( ίο) In the case of things, various methods of Zhou Zhiyou can be used without special restrictions. For example, a method of adding a denaturing agent to graft copolymerize after baking a nonpolar polymer, or a method of dissolving a nonpolar polymer in a solvent and adding a denaturing agent to graft copolymerize. In any method for efficient graft copolymerization, it is preferable to carry out the reaction in the presence of a free radical polymerization initiator. Examples of radical polymerization initiators include organic peroxides, organic peresters, and azo compounds. In addition, during the reaction, irradiation with ionizing radiation, ultraviolet rays, etc. can also generate free radicals. In the present invention, the denatured non-polar polymer can be a denaturant of the aforementioned unsaturated carboxylic acid and its derivatives, (b) unsaturated epoxy monomer, or (C) a silane monomer having an olefinic unsaturated bond Any one of the non-polar polymers that are denatured may be a single type, or a combination of two or more types. Furthermore, one molecule may have denatured by two or more types of (a), (b), or (c). The part can also be. Denatured non-polar polymer, the content rate from the structural unit of the denaturant is 0.005 ~ 10% by weight, preferably 0.01 ~ 5% by weight. The content rate of this structural unit exceeds 5% by weight, using the denatured electrode Polymer, producing electret film and electret non-woven filter material, which saturates the charge density, and the performance of electret can be expected to increase even more. In addition, when it exceeds 20% by weight, the film formation is difficult. In the present invention, the content of a part or all of the thermoplastic resin used in the production of the electret film is denatured non-polar polymer, which is 60% by weight or more, preferably 80% by weight or more. In addition, the thermoplastic resin (please read the precautions on the back before filling out this page). Set. This paper standard is applicable to the Chinese National Standard (CNS) Α4 specification (210Χ297 mm) -13-A7 A7 Central Standard of the Ministry of Economic Affairs B7 printed by the Bureau Staff Consumer Cooperative V. Description of the invention (11) In the case of containing polar polymers, the content is 40% by weight or less, preferably 20% by weight or less. Furthermore, in the present invention, it is used Thermoplastic resins, in addition to the aforementioned non-polar polymers, non-polar polymers and denatured non-polar polymers, can be added as needed, such as heat-resistant stabilizers, weather-resistant stabilizers, slip agents, anti-blocking agents, lubricants , Inorganic or organic fillers, dyes, pigments, etc. In the present invention, the electret nonwoven fabric is manufactured by forming the thermoplastic resin into a film shape with or without stretching, and performing a charge treatment while heating to produce an electret film. Secondly, opening the electret film to obtain open dimensions can be carried out according to the method of forming open fibers into a non-woven fabric. The method of forming the thermoplastic resin into a film shape is not particularly limited, and generally, any method of forming a film from such a resin is applicable. For example, blown film forming method, extrusion forming method using T-film, roll rolling method, etc. In addition, when stretching, the stretching process is usually above the softening point or below the melting point of the polymer compound constituting the film, for example, heating to about 110 ~ 150 composition, using a roller, hot plate, furnace, etc., in the longitudinal direction of the film Direction. In this case, the drawing magnification is usually about 5 to 10 times, and the forming stability is good, and it is easy to open the fiber, preferably about 6 to 8 times. The electret treatment may be performed during film formation, and after electret formation, the nonwoven fabric may be performed by an electret method. Here, when electret polarization is performed during film formation, since the efficiency of electret polarization is good, the removal performance is better than that of non-woven electret polarization after molding, which is preferable. This paper scale is applicable to the Chinese National Standard (CNS) A4 specification (210X297mm) (please read the notes on the back before filling out this page) Binding-Order A7 B7 printed by the Staff Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 12) The electret system can apply DC voltage to the non-woven fabric or film. The value of the applied DC voltage can be appropriately selected according to the shape of the electrode used, the distance between the electrodes, etc., or the amount of charged electric charge required by the electret nonwoven fabric, the processing speed, etc. For example, when the distance between the electrodes is 8 mm, at least -5 kV, preferably _6--20 kV DC voltage can be applied to the non-woven fabric. The application of the DC voltage can be performed by any method, and there is no particular limitation. For example, a method of passing a non-woven fabric or film through a pair of electrodes to which a DC voltage is applied; a method of applying a corona discharge or a pulse-like high voltage to the surface of the non-woven fabric; a method of applying a DC high voltage on both sides of the surface of the non-woven fabric with other dielectrics. Any other method is acceptable. The temperature of the embossing roller in the heating and nip process is the temperature of the softening point of the thermoplastic resin, which is preferably 5 to 50 ° C lower than the softening point, and more preferably 2 to 0 lower than the softening point 3 Temperature of 0 ° C. When the embossing roller is processed at a temperature exceeding the softening point of the thermoplastic resin, the improvement of the mechanical strength of the electret nonwoven fabric is effective, but there is a risk of loss of charge maintained by the electret nonwoven fabric. When the embossing roller is processed at a temperature higher than 50 ° C than the softening point, there is a possibility that an electret nonwoven fabric having sufficient mechanical strength cannot be obtained. For example, using polypropylene as the electret non-woven fabric of thermoplastic resin, its softening point is about 155 ° C, and the heating and nip treatment of the embossing roller is carried out at a temperature of about 100 0 ~ 150 ° C , The best is about 1 1 5 ~ 1 3 5 ° C temperature. Through the heating and pinching treatment of the embossing roller, the electret nonwoven fabric is softened and thermal fusion is performed throughout, and the determined mechanical strength is found. At this time, it is only connected to the electrified non-woven fabric (please read the precautions on the back before filling in this page)-Binding · Thread This paper size is applicable to China National Standard (〇 阳) 84 specifications (2 丨 0/297 %) _ 15_ A7 B7 printed by the Employee Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs V. Invention Description (13) The convex portion of the embossing roller is melted by the pressurized surface (embossed surface) without blocking the convex At the surface (non-embossed part) and inside, the charge remains trapped, and an electrified non-woven filter with excellent removal performance can be obtained. In addition, when the embossing roller is heated and pinched, the open dimension of the molten electrified nonwoven fabric enters the non-melted portion, and the electret nonwoven fabric is strongly integrated, which is effective for preventing self-dusting. In the present invention, the unit area of the embossing section of the embossing roller system used for heating and nip processing is 0. 05 ~ 5m πί, preferably 0. 1 ~ 3mnf, and the embossing area ratio is 2 ~ 3 0% , Preferably 3 ~ 10%. In addition, the number of embossing per unit area is about 0.1 to 1.5 pieces / mirf. Furthermore, the shape of the embossing portion is a cross-sectional shape with a height of 0.1 to 1.0 mm platform, rectangle, etc., and the top is With round, rectangular, square, diamond and other shapes. Using this embossing roller, an embossed portion corresponding to the electret nonwoven fabric was formed. The embossing rate of the filter, that is, the ratio of the embossed portion to the entire surface of the filter is 2 to 30%, preferably 3 to 10%. When the embossing rate of the filter exceeds 30%, the pressure loss will increase, and the dust capture ability of the filter will not be reduced well. On the one hand, if it is less than 2%, the integration of the mesh is not sufficient, so it is not good . The filter of the present invention manufactured by integrating the electret nonwoven fabric into a sheet shape by the pressing and pinching treatment of the embossing roller is usually wound into a reel at a winding speed of 1 to 2 〇m / m η shape. The instrument of the present invention has a high removal efficiency, and its removal efficiency is excellent in long-term stability. At the same time, the contact portion of the electret non-woven fabric and the mesh is thermally fused throughout to have an integrated structure and excellent mechanical strength. Therefore, the size of this paper is applicable to the Chinese National Standard (CNS) A4 specification (210X297mm) _ 16 _ (please read the precautions on the back before filling in this page) Binding · Order A7 2W〇62 _ B7 5. Description of the invention (14) 'The filter of the present invention does not cause cracking, elongation, etc. during secondary processing, and is excellent in handleability during secondary processing. In addition, according to the method for manufacturing an electret nonwoven fabric filter material of the present invention, all the charge of the electret nonwoven fabric material is not lost, and the filter material of the aforementioned structure can be manufactured, which is effective. Examples Hereinafter, the present invention will be described more specifically by way of examples and comparative examples, but the present invention is not limited by these examples. In addition, the removal efficiency, retention rate and pressure loss measured in the examples and comparative examples can be measured by the following method. (a) Removal efficiency, retention rate The removal efficiency was measured using the measuring device shown in FIG. First, an aerosol generator (manufactured by Nippon Science and Industry Corporation) 1 supplies NaCi particles (particle size: 0.3 #m), and at the same time, clean air passing through the air filter 2 is supplied to the chamber 3. After the concentration of NaCj? Particles in the chamber 3 becomes a certain concentration (2 ~ 6xlOe), the blower 4 is operated, and the gas in the chamber 3 passes through the flow path 5, and the flow rate is adjusted by the flow regulating valve 6 to attract it. When the passing wind speed measured by the velocimeter 7 becomes a certain speed (1.0 Om / sec), it is arranged in the flow path 5 and is N a C j in the upstream and downstream sides of the electret non-woven filter material 8 to be measured ? Particle concentration C i η and Cou t are measured by a particle counter (manufactured by Rion, KC-01 B) 9 a and 9b, respectively. According to the measurement results (please read the precautions on the back before filling in this page). Binding. _ Printed by the Ministry of Economic Affairs Central Standards Bureau Employee Consumer Cooperative. The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) ~ 17 -A7 B7 printed by the employee consumer cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs 5. The invention description (15), the removal efficiency can be obtained according to the following formula. Removal efficiency = [l- (Cout / Cin)] xl〇〇 (%) In addition, let the removal efficiency at this time be the initial value Eι, make the same electret non-woven filter material, at 60 ° C 'relative humidity: 80% After the 48-hour accelerated test, the removal efficiency E2 was measured again, and the retention rate of the removal efficiency was determined according to the following formula. Retention rate = (E2 / E1) X100 (%) (b) Pressure loss In the measuring device shown in Fig. 1, a differential pressure gauge 1 〇 was used to measure the electrified non-woven fabric at a passing wind speed of 1 · 〇m / sec The pressure loss of the filter 8 on the upstream side and the downstream side. (Examples 1 to 3, Comparative Examples 1 to 2) (Production of electret nonwoven fabric) The raw material resin or raw resin mixture shown in Table 1 was blended using a blown film forming machine (manufactured by Toshiba Machine (Company), 3 0 Extruder, 80 mm < / > die), forming temperature: 240 ° C, extruder spiral rotation number: forming under the forming condition of 5 4 r pm, the resulting bending width is 3 5 Omm, thickness 3 0 ~ 4 0 // m of the tubular film is continuously cut at both ends to produce two films with a width of 300 mm. J n ί Binding ^ Practice (please read the precautions on the back before filling in this page) This paper size is applicable to China National Standard (CNS) Α4 specifications (210X29 * 7mm) _ 18 _ B7 V. Description of invention (16) will The resulting film is stretched by rollers at a temperature of 110 to 120 ° C at an extension ratio of about 6 to 8 times to become a stretched film with a thickness of 1 1 0 to 2 mm. On the stretched film, the following Under the conditions, electrify the polarization by corona discharge to obtain the electrification film》 Applied voltage: 12kV (DC)
電極間隔:27mm 溫度:2 0 °C 電暈放電極之滯留時間:0. 8秒 改變相對於薄膜供給速度之輥輪旋轉速度比,以針山 狀輥輪將該延伸駐極化薄膜開變成網眼狀,捲繞成轉筒狀 。其次使該開繊維切斷成纖維長度7 Omm,以開綿機開 綿後,供給於成網(web-dorming )機’成形爲駐極化 網。 II HI n n^i I (請先閲讀背面之注意事項再填寫本頁) 經濟部中央標準局員工消費合作社印製 本紙張尺度適用中國國家標準(CNS ) A4規格(210X 297公釐) A7 B7 五、發明説明(17) 表 1Electrode interval: 27mm Temperature: 2 0 ° C Residence time of corona discharge electrode: 0.8 seconds Change the ratio of the roller rotation speed relative to the film supply speed, and open the extended electret film into a mesh with a needle roller Eye-shaped, rolled into a drum shape. Next, the opening dimension is cut into a fiber length of 7 Omm, and after opening with an opener, it is supplied to a web-dorming machine 'and formed into an electret network. II HI nn ^ i I (Please read the precautions on the back before filling out this page) The paper standard printed by the Employee Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs is applicable to the Chinese National Standard (CNS) A4 (210X 297mm) A7 B7 1. Description of the invention (17) Table 1
經濟部中央標準局員工消費合作社印I 纖維 原料樹脂或 樹脂組成物 (含有比率) 平均纖維 徑(寬) 壓紋量 (ju m ) (g/πί ) 1 同元聚丙烯 68 25 2 同元PP/無水 馬來酸變性 PP/聚碳酸酯 (90/5/5) 60 25 3 同元PP/無水 馬來酸變性 PP/聚碳酸酯 (90/5/5) 102 25 4 同元PP/無水 馬來酸變性 PP (95/5) 60 25 本紙張尺度適用中國國家標準(CNS)A4規格(210X297公釐)_ go J—-----^ -裝------訂-----^ 線 (請先閱讀背面之注意事項再填寫本頁) · A7 _______B7 五、發明説明(is) 表1樹脂之說明Printed by the Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs I Fiber raw material resin or resin composition (content ratio) Average fiber diameter (width) Embossed amount (ju m) (g / πί) 1 Polypropylene 68 25 2 Polypropylene PP / Anhydrous maleic acid modified PP / polycarbonate (90/5/5) 60 25 3 homogenous PP / anhydrous maleic acid modified PP / polycarbonate (90/5/5) 102 25 4 homogenous PP / anhydrous Maleic acid modified PP (95/5) 60 25 This paper scale is applicable to China National Standard (CNS) A4 specification (210X297 mm) _ go J —----- ^ -installation ------ order-- --- ^ Line (please read the precautions on the back before filling in this page) · A7 _______B7 V. Description of invention (is) Table 1 Description of resin
同元聚丙烯:MFR:〇. 5g/分(ASTM D 1 2 3 8 ) 密度:0· 91g/cm3 無水馬來酸變性聚丙烯:在上述同元聚丙烯使無水馬 來酸接枝共聚合而變性者(接枝率:3重量%) 聚碳酸酯:通用電氣公司製、Lexan 1 0 1 樹脂組成物之調製係使用轉鼓(tumbler mixor ) 進行。 將該駐極化網供給於壓花輥輪,在表2所示條件下, 予以加熱•夾壓處理使駐極化網熱熔合而獲得駐極化不織 布濾材。 關於所得到駐極化不織布濾器,測定去除效率,壓力 損失及保持率,結果如表2所示》 I---^-----f .裝------訂-----4-k線 (請先閱讀背面之注意事項再填寫本頁) 經濟部中央標準局員工消費合作社印製 本紙張尺度適用中國國家標準(CNS ) A4規格(210x297公釐)-21Homogenous polypropylene: MFR: 0.5 g / min (ASTM D 1 2 3 8) Density: 0 · 91g / cm3 Anhydrous maleic acid-modified polypropylene: Anhydrous maleic acid is graft-copolymerized on the same homopolypropylene The denatured person (graft ratio: 3% by weight) polycarbonate: Lexan 1 0 1 resin composition manufactured by General Electric Company was prepared using a tumbler mixor. The electret web was supplied to an embossing roller, and under the conditions shown in Table 2, heat and nip treatment were performed to thermally fuse the electret web to obtain an electret nonwoven filter material. Regarding the obtained electret non-woven filter, the removal efficiency, pressure loss and retention rate were measured, and the results are shown in Table 2. "I --- ^ ----- f. Packing ------ booking ---- -4-k line (please read the precautions on the back before filling in this page) The paper standard printed by the Employee Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs is applicable to the Chinese National Standard (CNS) A4 specification (210x297mm) -21
Α7 7 B 五、發明説明(/?) 表2 融合條件 去除性能 纖維 融合法 壓花單位面積 壓花率 去除效率 壓力損失 保持率 (mm2) (¾) * (¾) (mmH2〇) ⑻ 實施例1 2 壓花 0.12 5.0 19 2.0 90 實施例2 4 壓花 0.3 9.0 23 2.5 91 實施例3 4 壓花 0.12 5.0 15 2.0 87 比較例1 1 壓花 0.12 5.0 15 2.6 60 比較例2 3 壓花 0.12 1.0 _ * 本 _本 本 _木 氺 I n !丨 ‘^衣 訂 (請先閱讀背面之注意事項再填寫本頁) . 經濟部中央標準局員工消費合作社印製 注* :通過風速1 0 0 c m/s e c條件下之測定値 ":無法製造不織布 本紙張尺度適用中國國家標準(CNS ) A4規格(210 X 297公釐)Α7 7 B V. Description of the invention (/?) Table 2 Fusion conditions removal performance Fiber fusion embossing unit area embossing rate removal efficiency pressure loss retention rate (mm2) (¾) * (¾) (mmH2〇) ⑻ Examples 1 2 Embossing 0.12 5.0 19 2.0 90 Example 2 4 Embossing 0.3 9.0 23 2.5 91 Example 3 4 Embossing 0.12 5.0 15 2.0 87 Comparative Example 1 1 Embossing 0.12 5.0 15 2.6 60 Comparative Example 2 3 Embossing 0.12 1.0 _ * 本 _ 本本 _ 木 氺 I n! 丨 '^ Clothing (please read the precautions on the back before filling out this page). Printed by the Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs *: Passing wind speed 1 0 0 cm / Measurement under sec conditions ": Unmanufacturable non-woven paper size is applicable to China National Standard (CNS) A4 specification (210 X 297 mm)
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