摘要:
This impregnation device comprises at least a first dielectric insulating screen and first and second opposite-facing electrodes which are separated by a passage for the porous material to be impregnated provided with powder and are capable of producing an alternating electric field in this passage after having been connected to an alternating voltage generator. At least first electrode comprises at least two conducting strips, each of which has an internal face covered by the first dielectric screen and, overall, is turned towards the second electrode and also a longitudinal edge running along a separating slot, which strips are separated from each other by this separating slot and are electrically connected to one another.
摘要:
The present invention relates to an article comprising: at least one layer of a compound disposed on at least a portion of a glass-containing substrate, wherein the compound comprises: (a) a polyolefin having a deformation temperature of less than 110°C; and (b) a dispersion stabilizing agent; and wherein the compound imparts a modified property to the substrate; and wherein the substrate is formable.
摘要:
The invention relates to a composite reinforcement (R-2) that is self-adhesive by firing with a diene rubber matrix, which can be used as a reinforcing element for a tyre, comprising: at least one reinforcement wire (20), for example a carbon-steel cable; a first layer (21) covering said wire and made of a thermoplastic polymer having a positive glass transition temperature, for example a polyamide 6-6; and a second layer (22) covering said first layer (21) and comprising an unsaturated thermoplastic styrene elastomer having a negative glass transition temperature, for example an SBS (styrene-butadiene-styrene) copolymer. The invention also relates to a method for making such a composite reinforcement, and to an article or semi-finished product made of rubber, in particular a tyre, including such a composite reinforcement.
摘要:
A method of processing a composite material comprising heating a porous layer (3) in contact withthe composite material (1) above its melting point whereby it melts and becomes incorporated into the composite material. The material may be formed by a matrix diffusion process. In this case the porous layer acts as a distribution layer. Alternatively the material may be formed as a stack of prepregs. In this case the porous layer acts as a breather layer. The porous layer may comprise a polysulphone or polyethersulphone which increases the toughness of the material.
摘要:
The invention relates to a composite article comprising at least one metal reinforcement element embedded in a polymer material. An adhesion promoting layer is interposed between the metal reinforcement element and the polymer material. The adhesion promoting layer comprises an organofunctional silane and a hyperbranched polymer. The invention further relates to a method of manufacturing a composite article and to the use of a composite article as metal reinforced article.
摘要:
A composite material made of multiple filament bands is disclosed. The filament bands are wound to create a composite material. The filament bands may be impregnated with a solid or semi-solid resin. The filament bands are wound in multiple orientations to form a sheet of composite material. Additionally, the composite material may be made to have a varying number of layer and fiber orientations throughout the sheet of composite material. In another embodiment, a composite component requiring multiple layers and fiber orientations may be substantially manufactured during a filament winding process.
摘要:
The invention relates to an apparatus and a method of manufacturing a composite sheet, the method comprising: a. irradiating a sheet of fibres (20) and/or a matrix (11, 13) at an irradiation zone (33) with a plasma at substantially atmospheric pressure, and b. impregnating the sheet of fibres with the matrix at an adhesion zone (32); wherein processes a. and b. are performed simultaneously.
摘要:
The present invention provides a resin impregnating apparatus which enables a fiber feeding speed to the increased without increasing the size, complexity or costs of the apparatus. A resin impregnating apparatus 1 impregnating fibers F with resin includes a block member 2 including a tapered passage 21 through which the fibers F pass and which is tapered toward a direction in which the fibers F pass, and a resin supply device 3 supplying the resin to the fibers F in the vicinity of an inlet of the tapered passage 21. As the fibers F pass through the tapered passage 21 carrying the supplied resin, the resin is pressurized by a wedge effect of the tapered passage 21 so that the fibers F are impregnated with the resin ( Fig. 1 ).
摘要:
A method for producing flexible, low-bulk towpreg which involves powder coating a bundle of unspread fiber tows (35) arranged in a predetermined cross-sectional shape, and the resulting towpreg. During the powder coating process, the resin powder particles (82) do not enter into the fiber bundle, but rather only coat the surface fibers comprising the tows, resulting in dry fibers (80) in the core of the towpreg and outer fibers which are coated with a discontinuous sheath of resin on the surface of the towpreg surrounding the core of dry fibers. The resin layer on the surface of the towpreg is formed by a partial melting of the powder particles. A post treatment process can be used to convert flat ribbon towpreg produced in accordance with the present invention into flexible unidirectional tape.
摘要:
The invention relates to a novel method for electrically impregnating a fibrous, filamentous and/or porous web with a powder, particularly to give a composite material including a continuous, rigid or flexible matrix in intimate contact with said web, wherein the powder and the web are placed between a lower electrode and an upper electrode, the electrodes are mutually insulated by means of a dielectric, and the electrodes are connected to respective poles of an AC generator so that said powder and said web are simultaneously exposed to an electric field, characterised in that the upper electrode includes at least one electrode tube and the alternating electric field applied is from 0.10 to 20 kV/mm.