FR2461572A1 - Porous blocks of agglomerated expanded polystyrene - suitable for sub-soil water distribution or drainage systems - Google Patents

Porous blocks of agglomerated expanded polystyrene - suitable for sub-soil water distribution or drainage systems Download PDF

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Publication number
FR2461572A1
FR2461572A1 FR7918998A FR7918998A FR2461572A1 FR 2461572 A1 FR2461572 A1 FR 2461572A1 FR 7918998 A FR7918998 A FR 7918998A FR 7918998 A FR7918998 A FR 7918998A FR 2461572 A1 FR2461572 A1 FR 2461572A1
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FR
France
Prior art keywords
expanded polystyrene
sub
water distribution
soil water
porous blocks
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.)
Granted
Application number
FR7918998A
Other languages
French (fr)
Other versions
FR2461572B1 (en
Inventor
Francois Breton
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.)
BOUCHET PLASTIQUES
Original Assignee
BOUCHET PLASTIQUES
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 BOUCHET PLASTIQUES filed Critical BOUCHET PLASTIQUES
Priority to FR7918998A priority Critical patent/FR2461572A1/en
Publication of FR2461572A1 publication Critical patent/FR2461572A1/en
Application granted granted Critical
Publication of FR2461572B1 publication Critical patent/FR2461572B1/fr
Granted legal-status Critical Current

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Classifications

    • 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
    • C08J9/24—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by surface fusion and bonding of particles to form voids, e.g. sintering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/36—Feeding the material to be shaped
    • B29C44/38—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length
    • B29C44/44—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length in solid form
    • B29C44/445—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length in solid form in the form of expandable granules, particles or beads
    • 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
    • C08J9/22—After-treatment of expandable particles; Forming foamed products
    • C08J9/228—Forming foamed products
    • C08J9/232—Forming foamed products by sintering expandable particles
    • 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
    • C08J2325/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Derivatives of such polymers
    • C08J2325/02—Homopolymers or copolymers of hydrocarbons
    • C08J2325/04—Homopolymers or copolymers of styrene
    • C08J2325/06—Polystyrene

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Road Paving Structures (AREA)

Abstract

Porous blocks are made by agglomeration of non-spherical particles or clusters of expanded polystyrene, by consolidation after superficial heating to at least 90 deg.C. Suitable for subsoil drainage or for spreading water from a point irrigation source. The rough surface of the blocks provides a good key for cement. The pieces may be obtd. by breaking up and re-using expanded polystyrene slabs or mouldings produced from spherical beads.

Description

La présente invention a pour objet la fabrication d'agglomérats de particules de base non sphériques, en polystyrène expansé, laissant entre elles un nombre important de cavités communiquantes. The present invention relates to the manufacture of agglomerates of non-spherical base particles, made of expanded polystyrene, leaving between them a large number of communicating cavities.

La forme des particules de base est telle que, entassées en vrac avant traitement, ces particules créent déjà entre elles un grand nombre de cavités et cheminements pour les liquides. The shape of the basic particles is such that, piled in bulk before treatment, these particles already create between them a large number of cavities and paths for liquids.

Suivant l'importance dimensionnelle souhaitée pour ces cavités et cheminements, on choisira la forme de particules qui conviendra plus spécialement. Depending on the dimensional importance desired for these cavities and paths, the shape of the particles will be chosen which will be more particularly suitable.

Le procédé décrit exclue les matériaux déjà connus, obtenus directement à partir de billes sphériques de polystyrène expansé. The process described excludes already known materials, obtained directly from spherical beads of expanded polystyrene.

Les particules de base utilisées sont ellesmêmes obtenues, soit par expansion à l'air libre de polymérisats particulaires non sphériques de polystyrène expansible, soit par moulage de polystyrène pré-expansé, en particules de forme con çue à cet effet, soit par découpage des dites particules dans des pièces moulées obtenues elles-même à partir de polystyrène expansé. The basic particles used are themselves obtained, either by expansion in the open air of non-spherical particulate polymers of expandable polystyrene, or by molding of pre-expanded polystyrene, into particles of form designed for this purpose, or by cutting of said particles in molded parts obtained themselves from expanded polystyrene.

Le procédé de fabrication de la présente invention consiste à pratiquer l'agglomération des particules de base définies ci-dessus, sans toutefois les déformer, afin que subsistent les cavités désirées. The manufacturing process of the present invention consists in practicing the agglomeration of the base particles defined above, without however deforming them, so that the desired cavities remain.

Ces particules sont incluses à cet effet dans un volume limité de contour approprié tel que bloc, plaques ou autres. Puis, sous l'effet d'une température adéquate mais supérieure à 900, elles se ramollissent et se soudent plus ou moins complètement, laissant toutefois subsister entre elles les passages souhaités. These particles are included for this purpose in a limited volume of suitable contour such as block, plates or others. Then, under the effect of an adequate temperature but greater than 900, they soften and more or less completely weld, however leaving the desired passages between them.

Après refroidissement, le matériau se durcit et acquiert une certaine résistance à l'écrasement, sans perdre sa porosité. After cooling, the material hardens and acquires a certain resistance to crushing, without losing its porosity.

Le matériau ainsi obtenu peut être employé comme élément de drainage, pour des travaux d'établissement de sols et de chaussées, pour l'assainissement de terrains humides, ou comme accessoire pour la fondation et la construction des immeubles.  The material thus obtained can be used as a drainage element, for soil and pavement work, for the remediation of wetlands, or as an accessory for the foundation and construction of buildings.

Il peut être également utilisé pour la répartition des liquides provenant d'une source ponctuelle, dans les terrains et ailleurs. It can also be used for the distribution of liquids from a point source, in land and elsewhere.

Enfin, l'irrégularité de la structure de la surface extérieure du matériau ainsi obtenu lui confère une capacité d'accrochage particulière pour les matériaux durs de protection couramment utilisés en construction, tels que ciment et plâtre ; ce qui, joint aux qualités de légèreté et d'isolation propres au polystyrène expansé, permet de concevoir des utilisations nouvelles de ce matériau, dans le Bâtiment.  Finally, the irregularity of the structure of the external surface of the material thus obtained gives it a particular attachment capacity for the hard protective materials commonly used in construction, such as cement and plaster; which, combined with the qualities of lightness and insulation specific to expanded polystyrene, makes it possible to imagine new uses for this material, in Building.

Claims (1)

REVENDICATIONS Procédé de fabrication d'agglomérats légers en matière plastique essentiellement perméables à partir de particules de base non sphériques réalisées elles-mêmes en polystyrène expansé, et caractérisé en ce que l'agglomération de ces particules est faite dans des volumes fermés en forme de blocs, plaques ou autres, réalisant ainsi la constitution de matériaux à la fois légers, résistants et très perméables, comportant des surfaces à structure irrégulière.  Process for the manufacture of light agglomerates of plastics material which are essentially permeable from non-spherical base particles themselves made of expanded polystyrene, and characterized in that the agglomeration of these particles is carried out in closed volumes in the form of blocks, plates or others, thus achieving the constitution of materials that are both light, resistant and very permeable, comprising surfaces of irregular structure.
FR7918998A 1979-07-24 1979-07-24 Porous blocks of agglomerated expanded polystyrene - suitable for sub-soil water distribution or drainage systems Granted FR2461572A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7918998A FR2461572A1 (en) 1979-07-24 1979-07-24 Porous blocks of agglomerated expanded polystyrene - suitable for sub-soil water distribution or drainage systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7918998A FR2461572A1 (en) 1979-07-24 1979-07-24 Porous blocks of agglomerated expanded polystyrene - suitable for sub-soil water distribution or drainage systems

Publications (2)

Publication Number Publication Date
FR2461572A1 true FR2461572A1 (en) 1981-02-06
FR2461572B1 FR2461572B1 (en) 1985-05-10

Family

ID=9228201

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7918998A Granted FR2461572A1 (en) 1979-07-24 1979-07-24 Porous blocks of agglomerated expanded polystyrene - suitable for sub-soil water distribution or drainage systems

Country Status (1)

Country Link
FR (1) FR2461572A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1297892A (en) * 1961-05-26 1962-07-06 Process for treating expanded polystyrene and new material thus obtained
FR1386720A (en) * 1963-03-04 1965-01-22 Sicedison Spa Process for preparing synthetic thermoplastic expandable substances, and for obtaining porous shaped articles from these substances
CH462699A (en) * 1966-11-03 1968-09-15 Saint Gobain Process for the manufacture of a building material and installation for its implementation

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1297892A (en) * 1961-05-26 1962-07-06 Process for treating expanded polystyrene and new material thus obtained
FR1386720A (en) * 1963-03-04 1965-01-22 Sicedison Spa Process for preparing synthetic thermoplastic expandable substances, and for obtaining porous shaped articles from these substances
CH462699A (en) * 1966-11-03 1968-09-15 Saint Gobain Process for the manufacture of a building material and installation for its implementation

Also Published As

Publication number Publication date
FR2461572B1 (en) 1985-05-10

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