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1. WO2022008855 - METHOD FOR ANALYSING SEMI-FINISHED PRODUCTS COMPRISING A THERMOPLASTIC RESIN

Publication Number WO/2022/008855
Publication Date 13.01.2022
International Application No. PCT/FR2021/051283
International Filing Date 09.07.2021
IPC
B29C 70/54 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
70Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
04comprising reinforcements only, e.g. self-reinforcing plastics
28Shaping operations therefor
54Component parts, details or accessories; Auxiliary operations
B29C 70/46 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
70Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
04comprising reinforcements only, e.g. self-reinforcing plastics
28Shaping operations therefor
40Shaping or impregnating by compression
42for producing articles of definite length, i.e. discrete articles
46using matched moulds, e.g. for deforming sheet moulding compounds or prepregs
G01N 11/00 2006.1
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
11Investigating flow properties of materials, e.g. viscosity or plasticity; Analysing materials by determining flow properties
B29C 70/20 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
70Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
04comprising reinforcements only, e.g. self-reinforcing plastics
06Fibrous reinforcements only
10characterised by the structure of fibrous reinforcements
16using fibres of substantial or continuous length
20oriented in a single direction, e.g. roving or other parallel fibres
B29C 70/44 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
70Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
04comprising reinforcements only, e.g. self-reinforcing plastics
28Shaping operations therefor
40Shaping or impregnating by compression
42for producing articles of definite length, i.e. discrete articles
44using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding
G01N 3/08 2006.1
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
3Investigating strength properties of solid materials by application of mechanical stress
08by applying steady tensile or compressive forces
Applicants
  • ARKEMA FRANCE [FR]/[FR]
Inventors
  • CAYZAC, Henri-Alexandre
  • PASCAL, Jérôme
  • CIPRIANI, Régis
Agents
  • KLING, Simone
Priority Data
FR200731510.07.2020FR
Publication Language French (fr)
Filing Language French (FR)
Designated States
Title
(EN) METHOD FOR ANALYSING SEMI-FINISHED PRODUCTS COMPRISING A THERMOPLASTIC RESIN
(FR) PROCÉDÉ D'ANALYSE DE SEMI-PRODUITS COMPRENANT UNE RÉSINE THERMOPLASTIQUE
Abstract
(EN) Disclosed is a method for analysing semi-finished product comprising reinforcing fibres having an substantially unidirectional orientation and a thermoplastic resin, the method comprising a first and a second test enabling the thickness of a stack of semi-finished products to be measured over time during its compression and determination of the equivalent homogeneous viscosity of the stack; the method further comprising determining the reduction in total thickness of the stack during the first test; determining the ratio of the equivalent homogeneous viscosity of the stack from the second test over the equivalent homogeneous viscosity of the stack from the first test; and determining the ratio of the thickness of the stack from the first test at a reference duration after the time of the start of melting of the stack of semi-finished products, over the thickness of the stack from the first test at the time of the start of melting of the stack of semi-finished products.
(FR) Un procédé d'analyse de semi-produit comprenant des fibres de renfort ayant une orientation essentiellement unidirectionnelle et une résine thermoplastique, le procédé comprenant un premier et un deuxième test permettant de mesurer l'épaisseur d'un empilement de semi-produits au cours du temps lors de sa compression et de déterminer la viscosité homogène équivalente de l'empilement; le procédé comprenant en outre la détermination de la réduction d'épaisseur totale de l'empilement au cours du premier test; la détermination du rapport de la viscosité homogène équivalente de l'empilement du deuxième test sur la viscosité homogène équivalente de l'empilement du premier test; et la détermination du rapport de l'épaisseur de l'empilement du premier test au bout d'une durée de référence à partir de l'instant, du début de fusion de l'empilement des semi-produits, sur l'épaisseur de l'empilement du premier test à l'instant, du début de fusion de l'empilement des semi-produits.
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