EP0596060A1 - Procedes d'elaboration de materiaux composites formes par une matrice et une charge constituee de petites particules - Google Patents

Procedes d'elaboration de materiaux composites formes par une matrice et une charge constituee de petites particules

Info

Publication number
EP0596060A1
EP0596060A1 EP93909007A EP93909007A EP0596060A1 EP 0596060 A1 EP0596060 A1 EP 0596060A1 EP 93909007 A EP93909007 A EP 93909007A EP 93909007 A EP93909007 A EP 93909007A EP 0596060 A1 EP0596060 A1 EP 0596060A1
Authority
EP
European Patent Office
Prior art keywords
particles
matrix
action
small
static
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.)
Withdrawn
Application number
EP93909007A
Other languages
German (de)
English (en)
French (fr)
Inventor
Carl Andreas Paulick
Jean-Georges Gasser
François Royer
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0596060A1 publication Critical patent/EP0596060A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/06—Fibrous reinforcements only
    • B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
    • B29C70/12—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of short length, e.g. in the form of a mat
    • B29C70/14—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of short length, e.g. in the form of a mat oriented
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/12—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of short lengths, e.g. chopped filaments, staple fibres or bristles
    • B29K2105/14—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of short lengths, e.g. chopped filaments, staple fibres or bristles oriented
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/16—Fillers
    • B29K2105/18—Fillers oriented

Definitions

  • the fibers are generally aligned in the direction of traction.
  • the manufacture of the structure is however costly in time and cost price.
  • the second type of process is based on mixing fibers or platelets with a matrix of polymers. It leads to a statistical distribution of the reinforcement particles after molding and solidification. Due to this random distribution, it is difficult to obtain high quality surfaces in a cutting operation.
  • the present invention relates to devices for orienting fibers or small particles of different geometries. These various elements are impregnated in a deformable matrix, entirely or partially in the liquid state. Initially the particles are randomly distributed in the matrix. The orientation of the impregnates is effected by the combined action of a static or slightly variable magnetic induction field and a high frequency magnetic induction field.
  • the devices according to the invention allow the improvement of certain physical (electrical, thermal, optical, etc.) and mechanical properties such as mechanical rigidity, impact resistance, wear resistance, better fatigue resistance.
  • the various processes which are the subject of this patent are applied to plastics, ceramics and metallic compounds.
  • the improvements are obtained by the introduction into a matrix of fibers .or / and of plates of materials ensuring the desired reinforcement criterion.
  • the impregnates thus acquire a magnetic moment
  • a crucible [4; fig.l] which will contain the composite material [5; figl] which in its initial composition is the mixture of a hardenable epoxy matrix and carbon fibers and / or others reinforcing particles.
  • the magnetic field is applied for 5 min during the hardening phase of the matrix.
  • a protective screen formed by a 2mm thick copper sheet is provided to avoid parasitic heating which can be caused by the creepage lines of the high frequency magnetic field.
  • a superconductive magnet [l; fig.2] is installed at the outlet of an extrusion device [2; fig.2] so that the induction field created is parallel to the direction of traction.
  • An assembly with two coils [3a, 3b; fig.2] was chosen in order to be able to more easily implement the coil [4; fig.2] connected to the high-frequency generator [5: fig2].
  • the temperature of the sample is controlled by a heating system [6] in order to be able to be introduced in the liquid state into the coil.
  • the solidification of the mixture should not start until after the activation of a high frequency magnetic field. .
  • the process parameters are directly linked to the properties of the constituents of the composite material produced.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Reinforced Plastic Materials (AREA)
EP93909007A 1992-04-09 1993-04-08 Procedes d'elaboration de materiaux composites formes par une matrice et une charge constituee de petites particules Withdrawn EP0596060A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9204530 1992-04-09
FR9204530A FR2689897A1 (fr) 1992-04-09 1992-04-09 Procédé d'élaboration de matériaux composites formés par une matrice et une charge constituée de petites particules.
PCT/FR1993/000354 WO1993021004A1 (fr) 1992-04-09 1993-04-08 Procedes d'elaboration de materiaux composites formes par une matrice et une charge constituee de petites particules

Publications (1)

Publication Number Publication Date
EP0596060A1 true EP0596060A1 (fr) 1994-05-11

Family

ID=9428817

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93909007A Withdrawn EP0596060A1 (fr) 1992-04-09 1993-04-08 Procedes d'elaboration de materiaux composites formes par une matrice et une charge constituee de petites particules

Country Status (4)

Country Link
EP (1) EP0596060A1 (enrdf_load_stackoverflow)
AU (1) AU3956693A (enrdf_load_stackoverflow)
FR (1) FR2689897A1 (enrdf_load_stackoverflow)
WO (1) WO1993021004A1 (enrdf_load_stackoverflow)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3767505A (en) * 1971-02-19 1973-10-23 Monsanto Co Producing ordered composites by application of magnetic forces
JPS5029939B2 (enrdf_load_stackoverflow) * 1972-07-05 1975-09-27
FR2318733A1 (fr) * 1975-07-22 1977-02-18 Innovationsteknik Inst Ab Procede de renforcement de materiaux a l'aide de fibres
US4559188A (en) * 1983-02-14 1985-12-17 Dayco Corporation Method for making a layer of reinforced polymeric material
US4560603A (en) * 1983-10-27 1985-12-24 Ltv Aerospace And Defense Company Composite matrix with oriented whiskers
GB2190619B (en) * 1986-04-30 1989-11-29 Terence Micheal Costello Method and apparatus for forming a metallised carbon fibre wear-resistant surface

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9321004A1 *

Also Published As

Publication number Publication date
AU3956693A (en) 1993-11-18
FR2689897A1 (fr) 1993-10-15
FR2689897B1 (enrdf_load_stackoverflow) 1994-07-13
WO1993021004A1 (fr) 1993-10-28

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