Canadian Patents Database / Patent 2477564 Summary
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|(12) Patent:||(11) CA 2477564|
|(54) English Title:||PROCESS TO MANUFACTURE GREENER THERMOSETTING COMPOSITES OF PRE-SHAPED STRUCTURE|
|(54) French Title:||PROCEDE POUR FABRIQUER DES COMPOSITES THERMODURCISSABLES PLUS ECOLOGIQUES A STRUCTURE PREFORMEE|
|(51) International Patent Classification (IPC):||
|(72) Inventors (Country):||
|(73) Owners (Country):||
|(71) Applicants (Country):||
|(22) Filed Date:||2004-08-23|
|(41) Open to Public Inspection:||2006-02-23|
|(30) Availability of licence:||N/A|
|(30) Language of filing:||English|
A process to prepare structural composites for automotive, aerospace,
furniture and sports
goods applications whereby composites are manufactured by a modified resin
molding process with resins in liquid form either modified or unmodified were
under pressure into a cavity of a pre-shaped design containing fibres in
or mat form whereby fibres obtained mainly from natural origin but in few
cases they are
combined with synthetic fibres to a lesser extent are layered in the pre-
shaped mold in
single or multiple layers whereby the fibres. The molded products exhibit
mechanical strength and durability suitable for applications in automotive
interior parts, aerospace parts, furniture and sports goods applications.
Un procédé pour préparer des composites structuraux pour des applications pour les automobiles, les aéronefs, le mobilier et les articles de sport où les composites sont fabriqués par un procédé de moulage de transfert de résine modifiée où les résines sous forme liquide, modifiées ou non modifiées, ont été injectées sous pression dans une cavité d'un modèle préformé contenant des fibres sous forme non tissée, libre ou tissée, où les fibres ont été obtenues principalement d'origine naturelle, mais peuvent aussi être combinées à des fibres synthétiques dans une moindre mesure puis mises en couche dans le moule préformé en couche simple ou multiple. Les produits moulés présentent une excellente résistance mécanique et une durabilité convenant pour des applications de pièces extérieures et intérieures d'automobile, de pièces d'aéronef et d'articles de sport.
Claim 1: A
process to prepare structural composites for automotive, aerospace,
furniture and sports goods applications whereby composites are manufactured by
modified resin transfer molding process, whereby fibres of natural origin are
layers inside the cavity of the mold (30), wherein the moisture of fibres
removed (70) by applying vacuum (40) followed by impregnating resin in liquid
(10) of adequate viscosity, allowing to heat the resin impregnated fibre to
resin inside the mold to obtain product parts of required shape, size,
Claim 2. A process in claim 1, wherein the drying of fibre mats are done under
controlled vacuum conditions aided by heating of the mold with hot water above
Claim 3. A process as cited in claim 1, where in the resin system is a
material may comprise of Silane Modified Polyester resin, Epoxy vinyl ester
Silane modified epoxy ester resin, Acrylic resin, silane modified acrylic
resin, Soy resin,
silane modified soy resin and contains not less than 30 % by weight of the
Claim 4. A process as cited in claim 1, wherein the said moldable composition
cellulosic fibres selected from pulp fibres, bast fibres, leaf fibres, and
fibres such as corn, wheat and rice straw and comprises not more than 70
weight of the said composition.
Claim 5. A process as cited in any one of claims 1,3, and 4 where in wood pulp
selected from thermomechanical pulp (TMP), kraft pulp and bleached kraft pulp
from hard wood or soft wood or a combination of the same.
Claim 6. A process as cited in any one of claims 1,4 and 5, where in the bast
be selected from hemp, flax, jute and kenaf and / or a combination of the
Claim 7. A process as cited in claim 1, where in the synthetic fibres comprise
chemical artificial fibres such as polypropylene, carbon, kevlar, boron, and
Claim 8. A composite product made from the process of claim 7, wherein the
fibres can be selected from any chemical artificial fibres such as
kevlar, boron, and glass fibres.
Claim 9. A composite product made from the process of any one of claims 4 to
wherein the organic fibres are treated with an enzyme or chemicals.
Claim 10. A composite product made from the process of any one of claims 4 to
wherein the organic fibres are treated or untreated were used in loose form or
more specifically loose form were used in the core and mat form were used on
of the layered structure.
Claim 11. A composite product made from the process of any one of claims 4 to
in the chemicals used for treatment are from any of the following functional
such as silanes, imides, maleimides, alkanes, alkene dimers, rosin acid and
Claim 12. A composite product made from the process of any one of claims 4 to
in the chemicals used for treatment are Microthene Powder, Polyvinyl acetate,
Polyethyleneimine, Styrene Maleic Anhydride, Styrene Maleic Imide, Alkyl
Dimer, Rosin Acid, Trimethoxy (3,3,3-trifluoropropyl) silane, (3-Glycidyloxy
trimethoxy silane, Dimethyl (pentafluorophenyl) styryl silane, Chloro-dimethyl
Claim 13. A composite product made from the process of any one of claims 4 to
in the enzymes used are from any of the following category: such as endo-
Claim 14. A composite product made from the process of any one of claims 7-13,
in the said liquid resin material has been modified with silane chemicals to
mechanical properties of the resin in the presence of fibre.
Claim 15. A composite product made from the process of any one of claims 7-13,
in the said resin transfer molded composite materials have flexural strength
140-250% and 300- 700% greater than that of the said resin materials and have
modulus exceeding 10GPa.
Claim 16. A composite product made from the process of any one of claims 7-14,
in the said composites have impact strength improved by more than 70% by using
fibre in the layered design.
Claim 17. A composite product made from the process of any one of claims 1-16
used for structural applications in the automotive, sports goods, furniture
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|(41) Open to Public Inspection||2006-02-23|
|Correction of Dead Application||2013-02-06|
|Next Payment if small entity fee||2018-08-23||$125.00|
|Next Payment if standard fee||2018-08-23||$250.00|
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