JP5138806B1 - 生体溶解性無機繊維及びその製造方法 - Google Patents
生体溶解性無機繊維及びその製造方法 Download PDFInfo
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- JP5138806B1 JP5138806B1 JP2011263414A JP2011263414A JP5138806B1 JP 5138806 B1 JP5138806 B1 JP 5138806B1 JP 2011263414 A JP2011263414 A JP 2011263414A JP 2011263414 A JP2011263414 A JP 2011263414A JP 5138806 B1 JP5138806 B1 JP 5138806B1
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Abstract
【解決手段】生体溶解性繊維に界面活性剤が付着している無機繊維。
【選択図】なし
Description
1.生体溶解性繊維に界面活性剤が付着している無機繊維。
2.前記生体溶解性繊維が以下の組成を有する1記載の無機繊維。
SiO2とAl2O3とZrO2とTiO2との合計 50〜82重量%
CaOとMgOとの合計 18〜50重量%
3.前記生体溶解性繊維が以下の組成を有する1記載の無機繊維。
SiO2 50〜82重量%
CaOとMgOとの合計 10〜43重量%
4.前記生体溶解性繊維が以下の組成1又は2を有する1記載の無機繊維。
[組成1]
SiO2 70〜82重量%
CaO 1〜9重量%
MgO 10〜29重量%
Al2O3 3重量%未満
[組成2]
SiO2 70〜82重量%
CaO 10〜29重量%
MgO 1重量%以下
Al2O3 5重量%未満
5.前記界面活性剤が、カチオン系界面活性剤である1〜4のいずれか記載の無機繊維。
6.前記界面活性剤が、アルキルアミン・酢酸塩である1〜5のいずれか記載の無機繊維。
7.前記界面活性剤の量が、前記界面活性剤が付着した無機繊維全体を100重量%としたとき、0.01〜2重量%である1〜6のいずれか記載の無機繊維。
8.生体溶解性繊維に、界面活性剤を吹き付けるまたは含浸させる1〜7のいずれかのいずれか記載の無機繊維を製造する方法。
界面活性剤が付着していると、繊維間の摩擦が抑えられ繊維が柔軟になるため、加工の際、折れ難くなる。また、他の成分と均一に混合し易くなり、安定して二次製品を製造できる。例えば、フェルトを製造するときは針で刺し、不定形品を製造するときは溶媒等と混練するが、そのような加工時において折れ難くなる。その結果、強度が高くなり得る。
例えば、目地充填材等の不定形品を製造する際は親水性が高いことが求められる。織物を製造する際は柔軟性、または疎水性が高いことが求められる。
界面活性剤の量は、通常、界面活性剤が付着している無機繊維全体を100重量%としたとき、0.01〜2重量%であり、好ましくは0.01〜1.5重量%であり、より好ましくは0.01〜1.0重量%であり、0.01重量%以上0.25重量%未満であってもよく、0.25重量%以上1.0重量%以下であってもよい。用途により、この範囲で、又はこの範囲を超えて増減できる。
尚、エチレンジアミン4酢酸(EDTA)は、塩の部分がNa+(ナトリウム塩)、NH3 +(アンモニウム塩)である。さらに、EDTAの末端基は酢酸(CH3COO−)の構造なので、塩(カウンターイオン)として酢酸塩にならない。従って、アルキルアミン・酢酸塩には、EDTAは含まれない。通常、界面活性剤はこのようなキレート剤は含まない。
生理食塩水溶解率は、例えば、次のようにして測定される。すなわち、先ず、無機繊維を200メッシュ以下に粉砕して調製された試料1g及び生理食塩水150mLを三角フラスコ(容積300mL)に入れ、40℃のインキュベーターに設置する。次に、三角フラスコに、毎分120回転の水平振動を50時間継続して加える。その後、ろ過により得られた濾液に含有されている各元素の濃度(mg/L)をICP発光分析装置により測定する。そして、測定された各元素の濃度と、溶解前の無機繊維における各元素の含有量(重量%)と、に基づいて、生理食塩水溶解率(%)を算出する。すなわち、例えば、測定元素が、ケイ素(Si)、マグネシウム(Mg)、カルシウム(Ca)及びアルミニウム(Al)である場合には、次の式により、生理食塩水溶解率C(%)を算出する;C(%)=[ろ液量(L)×(a1+a2+a3+a4)×100]/[溶解前の無機繊維の重量(mg)×(b1+b2+b3+b4)/100]。この式において、a1、a2、a3及びa4は、それぞれ測定されたケイ素、マグネシウム、カルシウム及びアルミニウムの濃度(mg/L)であり、b1、b2、b3及びb4は、それぞれ溶解前の無機繊維におけるケイ素、マグネシウム、カルシウム及びアルミニウムの含有量(重量%)である。
SiO2とAl2O3とZrO2とTiO2との合計 50〜82重量%
CaOとMgOとの合計 18〜50重量%
SiO2 50〜82重量%
CaOとMgOとの合計 10〜43重量%
SiO2 66〜82重量%
CaO 1〜9重量%
MgO 10〜30重量%
Al2O3 3重量%以下
他の酸化物 2重量%未満
SiO2 66〜82重量%(例えば、68〜80重量%、70〜80重量%、71〜80重量%又は71〜76重量%とできる)
CaO 10〜34重量%(例えば、20〜30重量%又は21〜26重量%とできる)
MgO 3重量%以下(例えば、1重量%以下とできる)
Al2O3 5重量%以下(例えば3.5重量%以下又は3重量%以下とできる。また、1重量%以上又は2重量%以上とできる)
他の酸化物 2重量%未満
界面活性剤の付着の方法については、適量を付着させられる方法であればよく、特に制限はされないが、例えば生体溶解性繊維の繊維化直後に周囲から吹き付けてもよいし、バルク、ブランケット状となった繊維の集合体等、2次加工を施す前に吹き付けてもよいし、含浸してもよい。界面活性剤は適当な溶媒で希釈して処理に用いてもよい。溶媒として水、有機溶媒で希釈をしてもよいし、酢酸、硝酸、塩酸、硫酸、アンモニア等でPH調整を行ってもよい。通常、設備や安全性等の観点から水、酢酸、アンモニア等で調整することが好ましい。特に制限されるわけではないが安全性の観点からPHは6〜8程度が望ましい。
さらに界面活性剤が完全に消失しない、またはその効果が発揮される範囲の温度で適宜加熱、乾燥処理をしてもよい。
SiO2を73質量%、CaOを24質量%、MgOを0.3質量%、Al2O3を2質量%含む原料を加熱して溶融液を製造した。次に、この溶融液を繊維化する際、アルキルアミン酢酸塩(界面活性剤)を横から吹き付けて、無機繊維を製造した。表1に示されるように繊維への界面活性剤付着量を変えた。
尚、湿潤時間は、試料をメスシリンダーに落としてから、図1に示すように試料全体が水面下になるまでの時間である。沈降時間は、試料をメスシリンダーに落としてから、図2に示すように試料がメスシリンダーの底に沈降するまでの時間である。
界面活性剤を付着させなかった他は実施例1と同様にして繊維を製造し評価した。結果を表1に示す。
実施例2の繊維は柔軟性と適当な親水性と撥水性(水に沈み難く完全に浮かない程度)があり、繊維を折らずに均一に撹拌し易く、不定形断熱材に用いるのに適している。
Claims (10)
- 生体溶解性繊維にカチオン系界面活性剤が付着している無機繊維。
- 生体溶解性繊維に界面活性剤が付着している無機繊維であって、
前記界面活性剤の量が、前記界面活性剤が付着した無機繊維全体を100重量%としたとき、0.01〜2重量%である無機繊維。 - 前記生体溶解性繊維が以下の組成を有する請求項1又は2記載の無機繊維。
SiO2とAl2O3とZrO2とTiO2との合計 50〜82重量%
CaOとMgOとの合計 18〜50重量% - 前記生体溶解性繊維が以下の組成を有する請求項1又は2記載の無機繊維。
SiO2 50〜82重量%
CaOとMgOとの合計 10〜43重量% - 前記生体溶解性繊維が以下の組成1又は2を有する請求項1又は2記載の無機繊維。
[組成1]
SiO2 70〜82重量%
CaO 1〜9重量%
MgO 10〜29重量%
Al2O3 3重量%未満
[組成2]
SiO2 70〜82重量%
CaO 10〜29重量%
MgO 1重量%以下
Al2O3 5重量%未満 - 前記生体溶解性繊維が組成2を有する請求項5記載の無機繊維。
- Al2O3が2重量%以上である請求項6記載の無機繊維。
- 前記界面活性剤が、アルキルアミン・酢酸塩である請求項1〜7のいずれか記載の無機繊維。
- 生体溶解性繊維に、界面活性剤を吹き付けるまたは含浸させる請求項1〜8のいずれか記載の無機繊維を製造する方法。
- 請求項1〜8のいずれか記載の無機繊維から得られる成形品又は不定形品。
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JP4958439B2 (ja) * | 2006-01-05 | 2012-06-20 | ニチアス株式会社 | メソポーラスシリカ前駆体溶液、その製造方法及びメソポーラスシリカ |
JP4716883B2 (ja) | 2006-01-27 | 2011-07-06 | ニチアス株式会社 | 無機繊維質成形体 |
FR2901786B1 (fr) * | 2006-06-06 | 2008-08-29 | Manfred Buchler | Procede de preparation d'un materiau composite formable par impregnation d'un renfort fibreux, materiau ainsi obtenu et les pieces preparees a partir de ce materiau |
JP4761567B2 (ja) * | 2006-12-28 | 2011-08-31 | ニチアス株式会社 | 無機繊維質成形体 |
JP5536353B2 (ja) * | 2008-07-31 | 2014-07-02 | 帝人株式会社 | 無機繊維およびその製造方法 |
JP5198389B2 (ja) * | 2009-08-20 | 2013-05-15 | 花王株式会社 | 液体柔軟剤組成物 |
JP4902797B1 (ja) * | 2011-03-30 | 2012-03-21 | ニチアス株式会社 | 湿潤ブランケット |
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2011
- 2011-12-01 JP JP2011263414A patent/JP5138806B1/ja active Active
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2012
- 2012-11-12 KR KR1020147014218A patent/KR20140099458A/ko not_active Application Discontinuation
- 2012-11-12 EP EP12853538.2A patent/EP2787106B1/en active Active
- 2012-11-12 CN CN201280059172.5A patent/CN103958753B/zh active Active
- 2012-11-12 WO PCT/JP2012/007237 patent/WO2013080458A1/ja active Application Filing
- 2012-11-12 AU AU2012345334A patent/AU2012345334A1/en not_active Abandoned
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9932264B2 (en) * | 2014-08-08 | 2018-04-03 | Nichias Corporation | Bio-soluble inorganic fiber |
Also Published As
Publication number | Publication date |
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CN103958753A (zh) | 2014-07-30 |
WO2013080458A1 (ja) | 2013-06-06 |
JP2013112602A (ja) | 2013-06-10 |
EP2787106A4 (en) | 2014-11-12 |
EP2787106A1 (en) | 2014-10-08 |
CN103958753B (zh) | 2016-11-02 |
EP2787106B1 (en) | 2016-05-11 |
KR20140099458A (ko) | 2014-08-12 |
AU2012345334A1 (en) | 2014-06-26 |
US20140356622A1 (en) | 2014-12-04 |
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