Abstract:
A stampable sheet comprising discontinuous carbon fibers and a thermoplastic matrix resin, the stampable sheet characterized in that the viscosity &eegr; of the stampable sheet in a state in which the matrix resin in the stampable sheet is molten is in the range of &eegr;0 ≤ &eegr;
Abstract:
The invention relates to a material (I) suitable for the production of composite parts via a process in which an external thermosetting or thermoplastic matrix is diffused within said material, comprising at least one web (1) of unidirectional carbon fibres (2) that is combined, on at least one of its faces, with at least one conductive component (5) combined with or integrated into a permeable layer (3a, 3b, 10) made of a thermoplastic material or made of a mixture of thermoplastic and thermosetting materials, said permeable layer being in the form of a woven fabric, a powder, a porous film, a knit, or, preferably, a non woven fabric (3a, 3b, 10), to a process for manufacturing composite parts using such a material and to the composite parts thereof being capable of being obtained by such a process.
Abstract:
The present invention provides a method of producing reinforced composite containing fibre in a polymer matrix comprising the steps of: a. heating and drying a natural fibre-containing material in a hot blending chamber; b. sieving the dried natural fibre-containing material to produce a loose, soft and clean natural fibre free of contaminants and unwanted elements; c. shredding the fibre; d. pre-heating the shredded fibre; e. blending polymer, a nitrogen blowing agent a lubricant with the shredded fibre and optionally a coupling agent; and f. heating the blended mixture to the melting point of the polymer. Also provided is a composite produced by the method and a composite comprising a natural fibre-containing material, a polymer, a nitrogen blowing agent, a lubricant and optionally a coupling agent. Various modular constructions and a weighing assembly made from the composite are also provided.
Abstract:
Concepts and technologies are disclosed herein for compression molding of composite material quasi - isotropic flakes (400). According to some embodiments disclosed herein, a first layer (102) formed from a composite component material and a second layer (104) formed from a composite component material are consolidated together to form a quasi - isotropic panel (200). Composite material flakes (400) having quasi - isotropic properties ( "quasi - flakes " ) are obtained from the quasi - isotropic panel. A compression mold (500) is filled with the quasi -flakes (400), and heat is applied to the compression mold to form a part.
Abstract:
The present invention relates to a flame-resistant composition, a fiber-reinforced polyurethane composite comprising the flame-resistant composition and the use thereof. In particular, the invention describes a flame-resistant polyurethane- composite forming composition and a combustion-modified, fiber-reinforced polyurethane composite comprising the flame-resistant polyurethane-composite forming composition, for applications in vehicles and for building products. The invention also describes a long-fiber injection molding process for the preparation of the combustion-modified, fiber-reinforced polyurethane composite. The fiber- reinforced polyurethane composite of the invention show improved fire-reaction behaviour, measured as Limiting Oxygen Index (LOI), and a reduced smoke production.
Abstract:
The present disclosure provides a binder composition comprising a diisocyanate and a derivative of native lignin. The derivative of native lignin is treated such that it is characterized by the aliphatic hydroxy content. The binder may be used in an adhesive system comprising: a. a resin comprising at least about 30% by weight of phenol-formaldehyde resin and at least about 30% by weight of derivative of native lignin; and b. an isocyanate based binder.
Abstract:
A fiber reinforced part is formed from a compression molded thermoplastic resin reinforced with individual fibers of differing lengths randomly oriented substantially throughout the part.
Abstract:
The présent invention pertains to the use of nanotubes of at least one chemical élément chosen from éléments of groups IHa, IVa and Va of the periodic table to improve the high température mechanical properties of a polymeric matrix comprising at least one semi-crystalline thermoplastic polymer.