公开(公告)号：US07125912B2

公开(公告)日：2006-10-24

申请号：US10215353

申请日：2002-08-07

Applicant: Shiho Wang ,  Yasar Halefoglu ,  Chih-hsing Cheng ,  Dengfeng Xu ,  David Kwong Nung Chan ,  Meng-ying Chen ,  Chinh Do

Inventor： Shiho Wang ,  Yasar Halefoglu ,  Chih-hsing Cheng ,  Dengfeng Xu ,  David Kwong Nung Chan ,  Meng-ying Chen ,  Chinh Do

IPC: C01B33/158 ,  C03C3/00

CPC classification number: C03B19/12 ,  C03C3/06 ,  C04B35/624 ,  C04B35/62655 ,  C04B2235/3418 ,  Y10T428/249969

Abstract: A method of preparing a solution for forming a doped gel monolith includes providing a first substance including a metal alkoxide. The method further includes providing a second substance including a catalyst. The method further includes providing a chemical including a dopant. The method further includes forming a solution including the dopant, said forming including mixing the first substance and the second substance together. The method further includes cooling the solution to a mixture temperature which is at or below zero degrees Celsius, wherein the solution has a significantly longer gelation time at the mixture temperature than at room temperature.

公开(公告)号：US06928220B2

公开(公告)日：2005-08-09

申请号：US10062748

申请日：2002-02-01

Applicant: Shiho Wang ,  Yasar Halefoglu ,  Chih-hsing Cheng

Inventor： Shiho Wang ,  Yasar Halefoglu ,  Chih-hsing Cheng

IPC: C03B19/12 ,  C03B37/012 ,  C03B37/016 ,  G02B6/16

CPC classification number: C03B37/0124 ,  C03B19/12 ,  C03B37/01211 ,  C03B37/016 ,  C03B2201/10 ,  C03B2201/12 ,  C03B2201/28 ,  C03B2201/31 ,  C03B2201/32 ,  C03B2201/34

Abstract: A method forms an optical fiber preform. The method includes forming a sol-gel-derived rod having a first diameter. Forming the sol-gel-derived rod includes preparing a sol-gel solution including at least 3 mole % of a catalyst. The sol-gel solution is allowed to undergo gelation to form a wet gel monolith. The wet gel monolith is dried and shrunk by exposing the wet gel monolith to a temporal temperature profile, thereby forming a xerogel monolith. The xerogel monolith is consolidated, thereby forming the sol-gel-derived rod. The method further includes drawing the sol-gel-derived rod to substantially reduce its diameter, thereby forming a drawn rod having a second diameter less than the first diameter.

Abstract translation: 一种方法形成光纤预制件。 该方法包括形成具有第一直径的溶胶 - 凝胶衍生的棒。 形成溶胶 - 凝胶衍生的棒包括制备包含至少3摩尔％的催化剂的溶胶 - 凝胶溶液。 使溶胶 - 凝胶溶液进行凝胶化以形成湿凝胶整料。 通过将湿凝胶整料暴露于时间温度曲线，将湿凝胶整料干燥并收缩，从而形成干凝胶整料。 将干凝胶整料固结，从而形成溶胶 - 凝胶衍生的棒。 该方法还包括拉伸溶胶 - 凝胶衍生的棒以大大减小其直径，从而形成具有小于第一直径的第二直径的拉伸棒。

公开(公告)号：US06884822B2

公开(公告)日：2005-04-26

申请号：US10117921

申请日：2002-04-05

Applicant: Shiho Wang ,  Yasar Halefoglu ,  Chih-hsing Cheng ,  Dengfeng Xu ,  David Kwong Nung Chan ,  Meng-ying Chen ,  Chinh Do

Inventor： Shiho Wang ,  Yasar Halefoglu ,  Chih-hsing Cheng ,  Dengfeng Xu ,  David Kwong Nung Chan ,  Meng-ying Chen ,  Chinh Do

IPC: C03B19/12 ,  C04B35/624 ,  C01B33/158 ,  C03C3/00

CPC classification number: C04B35/62655 ,  C03B19/12 ,  C03C3/06 ,  C04B35/624 ,  C04B2235/3418 ,  Y10T428/249969

Abstract: A method of manufacturing a xerogel monolith having a pore diameter distribution includes preparing a first solution comprising metal alkoxide and preparing a second solution comprising a catalyst. A third solution is prepared by mixing the first solution and the second solution together. At least one of the first, second, and third solutions is cooled to achieve a mixture temperature for the third solution which is substantially below room temperature, wherein the third solution has a significantly longer gelation time at the mixture temperature as compared to a room temperature gelation time for the third solution. The method further includes allowing the third solution to gel, thereby forming a wet gel monolith. The method further includes forming the xerogel monolith by drying the wet gel monolith.

Abstract translation: 制造具有孔径分布的干凝胶整料的方法包括制备包含金属醇盐的第一溶液并制备包含催化剂的第二溶液。 通过将第一溶液和第二溶液混合在一起来制备第三溶液。 将第一溶液，第二溶液和第三溶液中的至少一种冷却以达到基本上低于室温的第三溶液的混合物温度，其中第三溶液在混合物温度下与室温相比具有显着更长的凝胶化时间 第三种溶液的凝胶化时间。 该方法还包括使第三溶液凝胶化，从而形成湿凝胶整料。 该方法还包括通过干燥湿凝胶整料来形成干凝胶整料。

公开(公告)号：US07000885B2

公开(公告)日：2006-02-21

申请号：US10062746

申请日：2002-02-01

Applicant: Shiho Wang ,  Yasar Halefoglu ,  Chih-hsing Cheng ,  Dengfeng Xu

Inventor： Shiho Wang ,  Yasar Halefoglu ,  Chih-hsing Cheng ,  Dengfeng Xu

IPC: B27N1/08

CPC classification number: C03C1/006 ,  C03B19/12 ,  C03B37/016 ,  Y10T428/139

Abstract: A mold is configured to form a gel monolith including a first gel portion and a second gel portion. The mold includes a base including a first hydrophobic surface. The mold further includes a tubular outer wall including a second hydrophobic surface, and the outer wall is coupled to the base. The mold further includes a removable tubular insert including an inner surface and an outer hydrophobic surface. The insert is removably coupled to the base.

公开(公告)号：US06620368B1

公开(公告)日：2003-09-16

申请号：US09615628

申请日：2000-07-13

Applicant: Shi-Ho Wang ,  Chih-Hsing Cheng ,  Sharon Doh

Inventor： Shi-Ho Wang ,  Chih-Hsing Cheng ,  Sharon Doh

IPC: C04B35624

CPC classification number: C04B35/6264 ,  C03C1/006 ,  C04B35/624 ,  C04B35/62655 ,  C04B2235/3418 ,  C04B2235/441

Abstract: A process which uses sol-gel to process oxide-based monoliths which are virtually free of cracks, without nullifying the desired attributes of the oxide-based monoliths. The method comprises substantially drying a wet porous gel monolith by removing a portion of the liquid from the pores of the gel monolith while the gel monolith remains wet, shrinking in size, and becoming correspondingly more dense, then removing the remaining portion of the liquid from the pores of the gel monolith such that the outer region of the gel monolith is not dried before the inner region of the gel monolith is dried. The gel monolith is substantially dried under conditions in which the liquid evaporation rate is no greater than the pore liquid diffusion rate.

Abstract translation: 使用溶胶 - 凝胶来处理实际上没有裂纹的氧化物基整料，而不使基于氧化物的整料的期望属性无效的方法。 该方法包括通过从凝胶整体的孔中除去一部分液体基本上干燥湿多孔凝胶整料，同时凝胶整体保持湿润，尺寸缩小并变得相应更致密，然后将剩余部分的液体从 凝胶整料的孔隙使​​得在凝胶整料的内部区域被干燥之前，凝胶整料的外部区域不被干燥。 在液体蒸发速率不大于孔隙液体扩散速率的条件下，将凝胶整料基本干燥。

公开(公告)号：US20060083914A1

公开(公告)日：2006-04-20

申请号：US11115071

申请日：2005-04-26

Applicant: Shiho Wang ,  Yasar Halefoglu ,  Chih-hsing Cheng ,  Dengfeng Xu ,  David Chan ,  Meng-ying Chen ,  Chinh Do

Inventor： Shiho Wang ,  Yasar Halefoglu ,  Chih-hsing Cheng ,  Dengfeng Xu ,  David Chan ,  Meng-ying Chen ,  Chinh Do

IPC: B32B3/26 ,  C08G77/06 ,  C08L83/00

CPC classification number: C04B35/62655 ,  C03B19/12 ,  C03C3/06 ,  C04B35/624 ,  C04B2235/3418 ,  Y10T428/249969

Abstract: A method of manufacturing a xerogel monolith having a pore diameter distribution includes preparing a first solution comprising metal alkoxide and preparing a second solution comprising a catalyst. A third solution is prepared by mixing the first solution and the second solution together. At least one of the first, second, and third solutions is cooled to achieve a mixture temperature for the third solution which is substantially below room temperature, wherein the third solution has a significantly longer gelation time at the mixture temperature as compared to a room temperature gelation time for the third solution. The method further includes allowing the third solution to gel, thereby forming a wet gel monolith. The method further includes forming the xerogel monolith by drying the wet gel monolith.

公开(公告)号：US07026362B2

公开(公告)日：2006-04-11

申请号：US09974725

申请日：2001-10-09

Applicant: Shiho Wang ,  Yasar Halefoglu ,  Chih-hsing Cheng ,  Dengfeng Xu ,  David Kwong Nung Chan ,  Meng-ying Chen ,  Chinh Do

Inventor： Shiho Wang ,  Yasar Halefoglu ,  Chih-hsing Cheng ,  Dengfeng Xu ,  David Kwong Nung Chan ,  Meng-ying Chen ,  Chinh Do

IPC: C01B33/152 ,  C03C3/00

CPC classification number: C04B35/62655 ,  C03B19/12 ,  C03C3/06 ,  C04B35/624 ,  C04B2235/3418 ,  Y10T428/249969

Abstract: A method of forming a gel monolith includes preparing a first solution comprising metal alkoxide and preparing a second solution comprising a catalyst. A third solution is prepared by mixing the first solution and the second solution together. At least one of the first, second, and third solutions is cooled to achieve a mixture temperature for the third solution which is substantially below room temperature, wherein the third solution has a significantly longer gelation time at the mixture temperature as compared to a room temperature gelation time for the third solution. The method further includes allowing the third solution to gel, thereby forming the gel monolith.