IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0014072
(2001-11-13)
|
발명자
/ 주소 |
|
출원인 / 주소 |
- The United States of America as represented by the Secretary of the Navy
|
대리인 / 주소 |
Cameron, Andrew J.Dunham, Celia C.Ward, James A.
|
인용정보 |
피인용 횟수 :
19 인용 특허 :
21 |
초록
▼
A microelectromechanical gas concentrator is fabricated for extracting a gaseous component from a gas mixture. The gas concentrator consists of an adsorbent member that alternatively moves between two regions on a single substrate. When the adsorbent member is in the first region, it is allowed to a
A microelectromechanical gas concentrator is fabricated for extracting a gaseous component from a gas mixture. The gas concentrator consists of an adsorbent member that alternatively moves between two regions on a single substrate. When the adsorbent member is in the first region, it is allowed to adsorb the gaseous component. When the adsorbent member moves to the second region, it is exposed to radiant energy, causing it to desorb the gaseous component. As the adsorbent member moves alternatively between regions, the gaseous component is adsorbed by the adsorbent member in the first region and desorbed in the second region, resulting in a pumping action that concentrates the gaseous component from one region to the other.
대표청구항
▼
A microelectromechanical gas concentrator is fabricated for extracting a gaseous component from a gas mixture. The gas concentrator consists of an adsorbent member that alternatively moves between two regions on a single substrate. When the adsorbent member is in the first region, it is allowed to a
A microelectromechanical gas concentrator is fabricated for extracting a gaseous component from a gas mixture. The gas concentrator consists of an adsorbent member that alternatively moves between two regions on a single substrate. When the adsorbent member is in the first region, it is allowed to adsorb the gaseous component. When the adsorbent member moves to the second region, it is exposed to radiant energy, causing it to desorb the gaseous component. As the adsorbent member moves alternatively between regions, the gaseous component is adsorbed by the adsorbent member in the first region and desorbed in the second region, resulting in a pumping action that concentrates the gaseous component from one region to the other. -, wherein R represents an aromatic hydrocarbon. 6. The liquid crystalline polymer blended gas separation membrane of claim 5, wherein R is selected from the group consisting of: 7. The liquid crystalline polymer blended gas separation membrane of claim 6, wherein, hydrogen of R is substituted with at least one substituent selected from the group consisting of alkyl, alkoxy, halogen, phenyl, halogenated phenyl, alkoxylated phenyl and alkylated phenyl. 8. The liquid crystalline polymer blended gas separation membrane of claim 5, wherein the component b) --O--R--O--is selected from the group consisting of: 9. The liquid crystalline polymer blended gas separation membrane of claim 1, wherein the thermotropic liquid crystalline polymer is a condensation polymerization product of 2-hydroxy-6-naphthalic acid, terephthalic acid and p-aminophenol. 10. The liquid crystalline polymer blended gas separation membrane of claim 1, wherein the thermoplastic resin has a higher melt viscosity than the viscosity of the liquid crystalline polymer during the melting processing process. 11. The liquid crystalline polymer blended gas separation membrane of claim 1, wherein the thermoplastic resin is a polyetherimide resin. 12. The liquid crystalline polymer blended gas separation membrane of claim 1, wherein the compatibilizer is polyesterimide. 13. The liquid crystalline polymer blended gas separation membrane of claim 1, wherein the compatibilizer is positioned at the interface between the thermoplastic resin and the liquid crystalline polymer, to lower an interfacial tension between the liquid crystalline polymer and the thermoplastic resin, improve the dispersion and strengthen the interfacial adhesion as well as interact differently for different diffusing gas molecules, hence, change the diffusion rate of each gas. 14. A method for preparing a liquid crystalline polymer blended gas separation membrane, comprising the steps of: a) forming a melt blend by mixing 50_99 wt % of a thermoplastic resin, 1_50 wt% of a thermotropic liquid crystalline polymer and 0.1_10 wt % of a compatibilizer based on the weight of the thermotropic liquid crystalline polymer; and b) biaxially drawing the melt blend obtained from step a) using a film blowing apparatus connected to an extrusion die to fabricate a film. 15. The method of claim 14, wherein a phase of the liquid crystalline polymer has a stripe shape in the film due to the biaxial drawing, in which a drawing ratio in a flow direction of the stripe is higher than a drawing ratio in a circumferential direction. 16. The method of claim 14, wherein a dual mandrel of which the inside and outside are rotated in the opposite direction is used as the extrusion die, so that a morphologically modified liquid crystalline phase is formed in a net shape. 17. The method of claim 14, wherein a multi-layered film is fabricated by using a multiple extrusion die. 18. The method of claim 14, wherein the amount of the compatibilizer is 0.1_5 wt % based on the weight of the thermotropic liquid crystalline polymer. 19. The method of claim 14, wherein the concentration of the thermotropic liquid crystalline polymer is 5_25 wt %. 20. The method of claim 14, wherein the concentration of the thermoplastic resin is 75_95 wt %. 21. A liquid crystalline polymer blended gas separation membrane fabricated by the method of claim 14. 22. A method for separating gases comprising the step of separating one or more gases with the liquid crystalline polymer blended gas separation membrane of claim 21. 203; US-5788744, 19980800, Klobucar et al.; US-5891219, 19990400, Klobucar et al.; US-5893944, 19990400, Dong, 096/114; US-5906674, 19990500, Tan et al.; US-5912423, 19990600, Doughty et al., 055/290; US-5961694, 19991000, Monereau et al.; US-6056804, 20000500, Keefer et al., 095/113; US-6110247, 20000800, Birmingham et al., 055/442; US-6165254, 20001200, Kawakami et al., 096/125; US-6197097, 20020300, Ertl et al., 096/143
※ AI-Helper는 부적절한 답변을 할 수 있습니다.