JP2019502624A - 低粉塵及び高断熱のエアロゲルブランケット及びその製造方法 - Google Patents
低粉塵及び高断熱のエアロゲルブランケット及びその製造方法 Download PDFInfo
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- JP2019502624A JP2019502624A JP2018524410A JP2018524410A JP2019502624A JP 2019502624 A JP2019502624 A JP 2019502624A JP 2018524410 A JP2018524410 A JP 2018524410A JP 2018524410 A JP2018524410 A JP 2018524410A JP 2019502624 A JP2019502624 A JP 2019502624A
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- airgel
- airgel blanket
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- blanket
- additive
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Classifications
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- C01B33/1585—Dehydration into aerogels
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/18—Processes for applying liquids or other fluent materials performed by dipping
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/007—After-treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/02—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to macromolecular substances, e.g. rubber
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- C—CHEMISTRY; METALLURGY
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Abstract
【選択図】図1
Description
本出願は、2016年10月12日付韓国特許出願第10-2016-0132168号に基づいた優先権の利益を主張し、当該韓国特許出願の文献に開示されている全ての内容は本明細書の一部として含まれる。
1)シリカ前駆体、水及びアルコールを混合してシリカゾルを準備するステップと、2)前記シリカゾルに下記化学式(1)で表される添加剤を添加するステップと、3)前記添加剤が混合されたシリカゾルに塩基性触媒を混合した後、ブランケット用基材に含浸させるステップと、4)前記シリカゾルがブランケット用基材に含浸された状態でゲル化反応させるステップと、5)その後、表面改質及び乾燥させるステップとを含むエアロゲルブランケットの製造方法を提供する。
[化学式(1)]
M(OH)x・MyOz・SiO2
(前記式中、Mは、Mg、Ca、Alからなる群より選択される1種以上の金属元素であり、x、y及びzは3以下の正の整数である。)
また、本発明は、前記製造方法によって製造されるエアロゲルブランケットを提供する。
1)シリカ前駆体、水及びアルコールを混合してシリカゾルを準備するステップと、
2)前記シリカゾルに下記化学式(1)で表される添加剤を添加するステップと、
3)前記添加剤が混合されたシリカゾルに塩基性触媒を混合した後、ブランケット用基材に含浸させるステップと、
4)前記シリカゾルがブランケット用基材に含浸された状態でゲル化反応させるステップと、
5)その後、表面改質及び乾燥させるステップとを含むことを特徴とする。
[化学式(1)]
M(OH)x・MyOz・SiO2
(前記式中、Mは、Mg、Ca、Alからなる群より選択される1種以上の金属元素であり、x、y及びzは3以下の正の整数である。)
前記ステップ1)はシリカゾルを製造するためのステップであって、前記シリカゾルは、シリカ前駆体、水及びアルコールを混合して製造されてよい。
[化学式(1)]
M(OH)x・MyOz・SiO2
(前記式中、Mは、Mg、Ca、Alからなる群より選択される1種以上の金属元素であり、x、y及びzは3以下の正の整数、より具体的には、xは2または3、yは1または2、zは1または3である。)
より具体的に、前記本発明の一実施形態に係る添加剤はMg(OH)2・MgO・SiO2であってよい。
テトラエチルオルトシリケートとエタノール、水、HClを混合してSiO2の濃度が20%の前加水分解されたテトラエチルオルトシリケート(Pre-hydrolyzed TEOS)を製造した。ここに再度水とエタノールを混合してシリカの濃度が4%のアルコキシドシリカゾルを製造した。以後、前記シリカゾルにプレート型粉末のMg(OH)2・MgO・SiO2をシリカ濃度の2.5重量部となる量で添加した。製造したシリカゾルにアンモニア触媒を添加した後、ポリエステル繊維を含浸させてゲル化を行った。このとき、ゲル化の完了時まで10分程度費やされた。以後、1時間ほど熟成させた後にヘキサメチルジシラザン(HMDS)で表面改質を行った。表面改質が終わると、7.2Lの超臨界抽出器(extractor)に前記シリカゲル-繊維の複合体を入れてCO2を注入した。以後、抽出器内の温度を1時間20分に亘って50℃に昇温し、50℃、100barに到達した時に150分間0.4L/minの速度で連続してCO2を注入した。このとき、分離器の下段を介してエタノールを回収した。以後、2時間かけてCO2を排出(venting)してエアロゲルブランケットを製造した。
前記実施例1において、添加剤を5.0重量部で添加したことを除き、前記実施例1と同様の方法でエアロゲルブランケットを製造した。
前記実施例1において、添加剤を7.5重量部で添加したことを除き、前記実施例1と同様の方法でエアロゲルブランケットを製造した。
前記実施例1において、添加剤を10.0重量部で添加したことを除き、前記実施例1と同様の方法でエアロゲルブランケットを製造した。
前記実施例1において、添加剤を添加していないことを除き、前記実施例1と同様の方法でエアロゲルブランケットを製造した。
前記実施例1において、添加剤として球形のMg(OH)2を5.0重量部で添加したことを除き、前記実施例1と同様の方法でエアロゲルブランケットを製造した。
前記実施例1において、プレート型(plate type)でなく球形粉末の添加剤を添加したことを除き、前記実施例1と同様の方法でエアロゲルブランケットを製造した。
前記実施例2及び比較例1から3で製造したエアロゲルブランケットのサンプルにワイヤーを接触させた後、ワイヤーを1050℃まで加熱して煙、悪臭及びすすの発生有無を観察し、その結果を表1及び図2に示した。
前記実施例1から4及び比較例1から3によって製造されたエアロゲルブランケットを12.5 x 12.5cmとなるように切断した後、14回折り畳んでから20回払い落として重量の変化を測定し(重量減少率 =(初期エアロゲルブランケットの重量−粉塵発生実験後のエアロゲルブランケットの重量)/(初期エアロゲルブランケットの重量)x 100%)、測定した結果を下記表1に示した。
前記実施例1から4及び比較例1から3で製造したシリカエアロゲルブランケットを、NETZSCH社のGHP 456装備を利用してGHP(Guarded Hot Plate)高温熱伝導度を測定し、その結果を表1に示した。
Claims (11)
2)前記シリカゾルに下記化学式(1)で表される添加剤を添加するステップと、
3)前記添加剤が混合されたシリカゾルに塩基性触媒を混合した後、ブランケット用基材に含浸させるステップと、
4)前記シリカゾルがブランケット用基材に含浸された状態でゲル化反応させるステップと、
5)その後、表面改質及び乾燥させるステップとを含むエアロゲルブランケットの製造方法。
[化学式(1)]
M(OH)x・MyOz・SiO2
(前記式中、Mは、Mg、Ca、およびAlからなる群より選択される1つ以上の金属元素であり、x、y及びzは3以下の正の整数である。)
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US20220098046A1 (en) * | 2019-09-30 | 2022-03-31 | Lg Chem, Ltd. | Silica sol, silica aerogel blanket manufactured using same, and method for manufacturing same |
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US10384946B2 (en) | 2019-08-20 |
US20180312407A1 (en) | 2018-11-01 |
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WO2018070755A1 (ko) | 2018-04-19 |
EP3351293A1 (en) | 2018-07-25 |
EP3351293A4 (en) | 2018-10-17 |
KR20180040373A (ko) | 2018-04-20 |
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JP6611937B2 (ja) | 2019-11-27 |
KR101917002B1 (ko) | 2018-11-08 |
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