[특허]Methods for the extrusion of novel, highly plastic and moldable hydraulically settable compositions

Methods for the extrusion of novel, highly plastic and moldable hydraulically settable compositions 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B28B-001/00 B28B-021/52 B29C-047/00 B29C-065/00
출원번호	US-0255344 (1994-06-07)
발명자 / 주소	Andersen Per J. (Santa Barbara CA) Hodson Simon K. (Santa Barbara CA)
출원인 / 주소	E. Khashoggi Industries (Santa Barbara CA 02)
인용정보	피인용 횟수 : 67 인용 특허 : 0

초록 ▼

Hydraulically settable mixtures and methods for extruding such mixtures into a variety of objects which are form-stable in the green state. High green strength is achieved by increasing the yield stress of the mixture while maintaining adequate extrudability. Optimizing the particle packing density while including a deficiency of water yields a hydraulically settable mixture which will flow under pressures typically associated with the extrusion of clay or plastic. In addition, a rheology-modifying agent can be added to increase the yield stress of the mixture while not significantly increasing the viscosity. The desired strength properties and other performance criteria of the final hardened extruded product are controlled by adding aggregates, fibers, a hydraulically settable binder, water, and other admixtures.

대표청구항 ▼

A method for extruding a hydraulically settable mixture to form an article of manufacture having a hydraulically settable matrix, the method comprising the steps of: combining a hydraulically settable binder, at least one aggregate material, a rheology-modifying agent and water to form a hydraulically settable mixture, the hydraulically settable binder and at least one aggregate material each comprising a plurality of particles which form a combination of particles that are in an initial state of natural packing density, the hydraulically settable mixture having an initial net deficiency of water such that the mixture is initially granular and substantially noncohesive; extruding the hydraulically settable mixture under an extrusion pressure sufficient to increase the initial packing density of the combination of the hydraulically settable binder particles and aggregate material particles, thereby reducing the initial net deficiency of water, causing the hydraulically settable mixture to become cohesive, and causing the mixture to flow through a die to form an extruded article of manufacture of a desired shape and having a hydraulically settable matrix, the hydraulically settable matrix of the extruded article of manufacture being form-stable immediately after being extruded through the die; and allowing the hydraulically settable matrix of the extruded article of manufacture to cure.

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
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메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
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연합인증

Methods for the extrusion of novel, highly plastic and moldable hydraulically settable compositions 원문보기

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Methods for the extrusion of novel, highly plastic and moldable hydraulically settable compositions 원문보기

초록 ▼

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연구과제 타임라인

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이 특허를 인용한 특허 (67)

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