Title:
CHEMICAL REACTION ACTIVATED EXPANDING MATERIAL FOR UNDERWATER DEPLOYABLE STRUCTURES
Document Type and Number:
WIPO Patent Application WO/2020/076409
Kind Code:
A3
Abstract:
Moisture-activated expanding foams used with Underwater Deployable Structures (UDSs) are useable on site as they are designed for use in wet environments and do not deteriorate over a period of days, months or even several years. These foams begin as polyurethane-based resins of low viscosity, and react in the presence of water to become solid foam. In their final forms, the foams exist as open- or closed- cell, and vary in strength, elasticity, and rigidity. The foams may be deposited on a substrate using a 3D printer or a mixer having an outlet to dispense the expandable foam. Substrates may be part of UDSs having cavities for the foam to support or expand the UDS to a usable structure. The foams may also be use in other manners, including with a buoyancy engine that may raise or lower a UDS to a desired depth.
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Inventors:
OUYANG BING (US)
SU TSUNG-CHOW (US)
LI YANJUN (US)
BAVAR SHADI (US)
SU TSUNG-CHOW (US)
LI YANJUN (US)
BAVAR SHADI (US)
Application Number:
PCT/US2019/045905
Publication Date:
July 23, 2020
Filing Date:
August 09, 2019
Export Citation:
Assignee:
FLORIDA ATLANTIC UNIV BOARD OF TRUSTEES (US)
International Classes:
B63G8/00; G01V1/38
Foreign References:
| US20060159523A1 | 2006-07-20 | |||
| US4333898A | 1982-06-08 | |||
| US5026736A | 1991-06-25 | |||
| US3837171A | 1974-09-24 | |||
| US3803540A | 1974-04-09 | |||
| US6254445B1 | 2001-07-03 | |||
| US20150119480A1 | 2015-04-30 |
Other References:
S SAUERBRUNN, R, RIESEN: "Thermosets: How to Avoid Incomplete Curing", AMERICAN LABORATORY, 1 January 2010 (2010-01-01), pages 1 - 3, XP055727218, Retrieved from the Internet
Attorney, Agent or Firm:
CORNELISON, Michael J. (US)
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