摘要:
The present disclosure relates to a moulding process for moulding a component (1; 5). A plastics material (2) having electrically charged fibres (3) dispersed therein is introduced into a mould cavity (11). An electric field (F) is generated in said mould cavity (11) to apply an electrostatic force to said electrically charged fibres (3) to modify their position and/or orientation. The present disclosure also relates to a component (1; 5); and to a mould (12).
摘要:
A polymeric insert formed by extruding a material including polyamide and a plurality of long fibers to form a column structure having a first profile. A method for making such an insert comprising passing a polymeric material in a substantially flowable state through a die, and substantially simultaneously passing a fiber through the die, wherein during the passing step the polymeric material has a relative viscosity of less than about 60 according to ASTM D789.
摘要:
The invention relates to a method of joining a thermoplastic material (10) to a fibre composite material (11), the thermoplastic material (10) being welded to the fibre composite material (11), wherein the fibre composite material is a fibre-reinforced matrix material or comprises a fibre-reinforced matrix material and wherein the matrix material is a thermoset or comprises a thermoset. Preferably, the thermoplastic material (10) and the fibre composite material (11) are welded together by motion welding and/or by induction welding. In addition, it is preferred that, for the preferred induction welding, an electrically conductive material is arranged in a joint area between the thermoplastic material and the fibre composite material and induction heat is generated in the electrically conductive material which is sufficient to cause the thermoplastic material to start to melt and to heat the fibre composite material.
摘要:
A pneumatic tire, comprising a tread rubber (G) having a short fiber mixed rubber part (10) forming a ground−contact surface, wherein short fibers (f) are disposed in outer radial direction of the tire aslant toward the outside of a vehicle substantially at an angle of (&agr;) in an area (Y1) between an outer ground−contact end (E 0 ) positioned on the outside of the vehicle when the tire is installed on the vehicle and a tire equator (C), and the angle (&agr;1) of the short fibers (f) at the outer ground−contact end (E 0 ) is made larger than the angle (&agr;2) of the short fibers (f) at the tire equator (C).
摘要:
This invention relates to a process for manufacturing composites and laminates reinforced with continuous or long fibers and/or filaments, which comprises the subsequent steps of (a) forming a preform of reinforcing material by arranging a green tape, ribbon, sheet or cloth comprising a number of continuous longitudinally oriented fibers or filaments which are spaced from each other by means of uniformly distributed particles, bonded by means of a flexible binder, (b) removing or converting the major part of the binder and, if applicable, (c) filling the voids and cavities with matrix material. Further, this invention relates to a process for manufacturing composites and laminates reinforced with chopped-aligned fibers and/or filaments, which comprises chopping a green tape or ribbon as defined above, mixing the chopped tape or ribbon with a binder, lubricant and/or matrix material and forming mouldings from this mixture by any moulding method.
摘要:
A method and apparatus for uniformly and directionally aligning and stretching nanofibers inside a porous medium is described. The nanofibers may include nanotubes, nanowires, long-chain polymer molecules or likewise. Porous medium may include a porous layer, fabric, or composite prepreg or likewise. According to one embodiment, an apparatus for directional alignment of nanofiber in a porous medium includes a fluid matrix with nanofibers. A porous medium is provided as well as a device for forcing the fluid matrix radially through the porous medium.
摘要:
The present invention relates to a method of moulding a component (1) having one or more features (5). At least one fibrous substrate (7) is located in a mould (31, 33). A matrix-forming material (29) is also provided in the mould (31, 33). Heat is applied to melt the matrix-forming material (29) to form a matrix (9) and to integrally mould said one or more features (5).
摘要:
The invention relates to a method of joining a thermoplastic material (10) to a fibre composite material (11), the thermoplastic material (10) being welded to the fibre composite material (11), wherein the fibre composite material is a fibre- reinforced matrix material or comprises a fibre-reinforced matrix material and wherein the matrix material is a thermoset or comprises a thermoset. Preferably, the thermoplastic material (10) and the fibre composite material (11) are welded together by motion welding and/or by induction welding. In addition, it is preferred that, for the preferred induction welding, an electrically conductive material is arranged in a joint area between the thermoplastic material and the fibre composite material and induction heat is generated in the electrically conductive material which is sufficient to cause the thermoplastic material to start to melt and to heat the fibre composite material.