FR2572986B1 - Procede de fabrication de spheres de faible densite apparente, et resistantes a une pression externe elevee; spheres ainsi obtenues et materiau a faible densite apparente comportant ces spheres - Google Patents

Procede de fabrication de spheres de faible densite apparente, et resistantes a une pression externe elevee; spheres ainsi obtenues et materiau a faible densite apparente comportant ces spheres

Info

Publication number
FR2572986B1
FR2572986B1 FR8417055A FR8417055A FR2572986B1 FR 2572986 B1 FR2572986 B1 FR 2572986B1 FR 8417055 A FR8417055 A FR 8417055A FR 8417055 A FR8417055 A FR 8417055A FR 2572986 B1 FR2572986 B1 FR 2572986B1
Authority
FR
France
Prior art keywords
spheres
low
density
resistant
external pressure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
FR8417055A
Other languages
English (en)
Other versions
FR2572986A1 (fr
Inventor
Andre Ernest Athanase Lelu
Max Louis Emile Leon Lecoustre
Gilles Remi Fonblanc
Gerard Georges Simon Marino
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Societe Nationale des Poudres et Explosifs
Original Assignee
Societe Nationale des Poudres et Explosifs
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Societe Nationale des Poudres et Explosifs filed Critical Societe Nationale des Poudres et Explosifs
Priority to FR8417055A priority Critical patent/FR2572986B1/fr
Publication of FR2572986A1 publication Critical patent/FR2572986A1/fr
Application granted granted Critical
Publication of FR2572986B1 publication Critical patent/FR2572986B1/fr
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B3/00—Hulls characterised by their structure or component parts
    • B63B3/13—Hulls built to withstand hydrostatic pressure when fully submerged, e.g. submarine hulls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/006—Coating of the granules without description of the process or the device by which the granules are obtained
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/16—Auxiliary treatment of granules
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/32—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof from compositions containing microballoons, e.g. syntactic foams

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Medicinal Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Polymers & Plastics (AREA)
  • Materials Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
FR8417055A 1984-11-09 1984-11-09 Procede de fabrication de spheres de faible densite apparente, et resistantes a une pression externe elevee; spheres ainsi obtenues et materiau a faible densite apparente comportant ces spheres Expired FR2572986B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8417055A FR2572986B1 (fr) 1984-11-09 1984-11-09 Procede de fabrication de spheres de faible densite apparente, et resistantes a une pression externe elevee; spheres ainsi obtenues et materiau a faible densite apparente comportant ces spheres

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8417055A FR2572986B1 (fr) 1984-11-09 1984-11-09 Procede de fabrication de spheres de faible densite apparente, et resistantes a une pression externe elevee; spheres ainsi obtenues et materiau a faible densite apparente comportant ces spheres

Publications (2)

Publication Number Publication Date
FR2572986A1 FR2572986A1 (fr) 1986-05-16
FR2572986B1 true FR2572986B1 (fr) 1986-12-19

Family

ID=9309404

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8417055A Expired FR2572986B1 (fr) 1984-11-09 1984-11-09 Procede de fabrication de spheres de faible densite apparente, et resistantes a une pression externe elevee; spheres ainsi obtenues et materiau a faible densite apparente comportant ces spheres

Country Status (1)

Country Link
FR (1) FR2572986B1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0376884A3 (fr) * 1988-12-21 1991-06-05 Ciba-Geigy Ag Granulat coulant
FI900713L (fi) * 1990-02-14 1991-08-15 Rauma Repola Oy Trycksaeker skalkonstruktion foer undervattensteknik, i synnerhet foer djuphavsteknik.
CN101172518B (zh) * 2007-10-26 2011-05-11 哈尔滨工程大学 深水耐压浮力装置
GB2551197B (en) 2016-06-10 2019-03-13 Acergy France SAS Controlling the buoyancy of a mass of buoyant spheres
GB201704129D0 (en) 2016-05-20 2017-04-26 Acergy France SAS Subsea buoyancy systems
WO2018112504A1 (fr) * 2016-12-23 2018-06-28 Matrix Composites And Engineering Ltd Matériau composite
CN112321316A (zh) * 2020-11-27 2021-02-05 中宝(西安)科技集团有限公司 一种高纯碳纤维空心球复合材料及其制备方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2806509A (en) * 1956-06-11 1957-09-17 Goodyear Aircraft Corp Sandwich structures
US3477967A (en) * 1966-03-28 1969-11-11 Us Navy Syntactic foam
US3658030A (en) * 1968-06-21 1972-04-25 Schaper & Brummer Kg Apparatus for coating discrete articles
US3622437A (en) * 1969-05-09 1971-11-23 Gen Dynamics Corp Composite buoyancy material
US3934545A (en) * 1971-11-15 1976-01-27 Alpha Sheet Metal Works, Inc. Apparatus for enrobing discrete objects
DE2928512A1 (de) * 1979-07-14 1981-01-29 Roehm Gmbh Verfahren zur herstellung einer kratzfesten beschichtung auf einem kunststoff-formkoerper

Also Published As

Publication number Publication date
FR2572986A1 (fr) 1986-05-16

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