公开(公告)号：US08889749B2

公开(公告)日：2014-11-18

申请号：US13684282

申请日：2012-11-23

Applicant: Korea Institute of Science and Technology

Inventor： Dong Jin Suh ,  Gi Seok Yang ,  Jae Wook Choi ,  Young Hyun Yoon ,  Yun Su Lee ,  Jeong Myeong Ha

IPC: C08J9/236 ,  C07F7/18

CPC classification number: C07F7/188

Abstract: Provided is a method for preparing hydrophobic monolithic silica aerogel, comprising dipping monolithic wet silica gel obtained by using an alkoxide precursor into an alkylsilane solution as a dipping solution to perform hydrophobitization of the surface and inner part of the monolithic wet silica gel by a dipping process. The method is economical by virtue of the use of a small amount of alkylsilane compound and imparts hydrophobic property to monolithic silica aerogel simply in a cost efficient and time efficient manner. In addition, the method reduces shrinkage of hydrophobic monolithic silica aerogel, enables production of hydrophobic monolithic silica aerogel in a translucent form, and allows the hydrophobic monolithic silica aerogel to maintain low heat conductivity similar to the heat conductivity of hydrophilic silica aerogel. The hydrophobic monolithic silica aerogel may be used directly as a heat insulating panel by virtue of excellent hydrophobic property and heat insulating property.

Abstract translation: 提供一种制备疏水整体二氧化硅气凝胶的方法，其包括将通过使用醇盐前体获得的整体式湿式硅胶浸渍到作为浸渍溶液的烷基硅烷溶液中，以通过浸渍方法进行整体式湿式硅胶的表面和内部的疏水化 。 该方法由于使用少量的烷基硅烷化合物是经济的，并且以成本有效和时效的方式简单地赋予整体二氧化硅气凝胶疏水性。 此外，该方法减少了疏水性整体二氧化硅气凝胶的收缩，使得能够以半透明的形式生产疏水整体二氧化硅气凝胶，并且允许疏水整体二氧化硅气凝胶保持与亲水性二氧化硅气凝胶的热导率相似的低导热性。 疏水性整体式二氧化硅气凝胶由于优异的疏水性和隔热性，可以直接用作隔热板。

公开(公告)号：US20130296596A1

公开(公告)日：2013-11-07

申请号：US13684282

申请日：2012-11-23

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Dong Jin Suh ,  Gi Seok Yang ,  Jae Wook Choi ,  Young Hyun Yoon ,  Yun Su Lee ,  Jeong Myeong Ha

IPC: C07F7/18

CPC classification number: C07F7/188

Abstract: Provided is a method for preparing hydrophobic monolithic silica aerogel, comprising dipping monolithic wet silica gel obtained by using an alkoxide precursor into an alkylsilane solution as a dipping solution to perform hydrophobitization of the surface and inner part of the monolithic wet silica gel by a dipping process. The method is economical by virtue of the use of a small amount of alkylsilane compound and imparts hydrophobic property to monolithic silica aerogel simply in a cost efficient and time efficient manner. In addition, the method reduces shrinkage of hydrophobic monolithic silica aerogel, enables production of hydrophobic monolithic silica aerogel in a translucent form, and allows the hydrophobic monolithic silica aerogel to maintain low heat conductivity similar to the heat conductivity of hydrophilic silica aerogel. The hydrophobic monolithic silica aerogel may be used directly as a heat insulating panel by virtue of excellent hydrophobic property and heat insulating property.

Abstract translation: 提供一种制备疏水整体二氧化硅气凝胶的方法，其包括将通过使用醇盐前体获得的整体式湿式硅胶浸渍到作为浸渍溶液的烷基硅烷溶液中，以通过浸渍方法进行整体式湿式硅胶的表面和内部的疏水化 。 该方法由于使用少量的烷基硅烷化合物是经济的，并且以成本有效和时效的方式简单地赋予整体二氧化硅气凝胶疏水性。 此外，该方法减少了疏水性整体二氧化硅气凝胶的收缩，使得能够以半透明的形式生产疏水整体二氧化硅气凝胶，并且允许疏水整体二氧化硅气凝胶保持与亲水性二氧化硅气凝胶的热导率相似的低导热性。 疏水性整体式二氧化硅气凝胶由于优异的疏水性和隔热性，可以直接用作隔热板。