Abstract:
A method of making a magnetically loaded pre-impregnated tape uses a drum (1) that is heated and which is associated with a heated bath (2) containing a thermo-plastic resin solution. A fibre tape material (4) is fed onto the drum (1) and, just prior to the fibre tape material meeting the periphery of the drum, the fibre tape material (4) is impregnated with an isotropic magnetic particle material (6) to form the pre-impregnated tape (8). The pre-impregnated tape may be fed to a heating station where it is bonded with a thermoplastic resin impregnated fibre tow to produce a magnetically loaded composite tape.
Abstract:
A process for preparing benzoxazine-thiol polymer film is described comprising forming a rolling bank of a curable composition comprising a polybenzoxazine and a polythiol, wherein the rolling bank contacts first and second carrier substrates; passing the first and second substrates with the curable composition therebetween through a nip; and at least partially curing the curable composition to provide the corresponding polymeric layer. The compositions are useful in coating, sealants, adhesive and many other applications.
Abstract:
The invention relates to composite compositions having a matrix of polymer networks and dispersed phases of particulate or fibrous materials. The polymer matrix contains a polyurethane network formed by the reaction of a poly- or di-isocyanate and one or more saturated polyether or polyester polyols, and an optional polyisocyanurate network formed by the reaction of optionally added water and isocyanate. The matrix is filled with a particulate phase, which can be selected from one or more of a variety of components, such as fly ash particles, axially oriented fibers, fabrics, chopped random fibers, mineral fibers, ground waste glass, granite dust, or other solid waste materials. The addition of water can also serve to provide a blowing agent to the reaction mixture, resulting in a foamed structure, if such is desired.
Abstract:
The present invention provides various methods for producing gel sheets in a continuous fashion. The embodiments of the present invention help reduce the time of producing gel sheets that is suitable for industrial manufacturing. Such gel sheets are used in manufacturing aerogel blankets used in a variety of applications including thermal and acoustic insulation.
Abstract:
The invention relates to a device for the production of plastic molded parts, e.g. plates, profiles or the like, by means of which a continuous production process is ensured and wastes are substantially avoided. The inventive device includes two interspaced, parallel-running conveyor belts (9, 10) sealed on their edges by adjustable sealing members (16). A liquid plastic material which is evenly distributed widthwise on the conveyor belts (9, 10) is fed to the intake slot between the conveyor belts (9, 10) by means of a distributor (6) comprising at least two receptacles (2), each of which contains one monomer component. The conveyor belts are placed in a chamber (22), in which the temperature required for solidification or polymerization of the liquid plastic material is maintained by means of heating devices (25) during conveyance by said conveyor belts (9, 10). The solidified, plate-like plastic material exits from the chamber (22) via an outlet opening (24), is removed by extracting rollers (36) and subdivided by a separator (39) into pieces of a predetermined length.
Abstract:
A device for the production of slabs of wax or other thermoplastic material is provided with two endless conveyor belts (1, 2) placed opposite each other and one above the other between which the wax is fed, with side guide (17) running along with and between the parts of the conveyor belts facing each other and with cooling means (9, 10) for cooling the wax. The device contains side guide belts (17) with two flat parallel surfaces, each of which sealingly engages with the opposite surface of the corresponding conveyor belt part. The device is suitable for processing wax with a sticky character due to the horizontal position of the belts and the relatively large sealing areas between the belts and the side guides.
Abstract:
A method of forming a substrate in a thermal compression bonding process that permit substantially greater amounts of fillers than previously accomplished. The method employs a dispersion of a thermoplastic binder and a filler. The dispersion is then thermally compression bonded to form a substrate. Lightweight fillers are one example of fillers that are ideally suited for the thermal compression bonding through the use of a dispersion. Such lightweight fillers enable the formation of a substrate with a very low and desirable specific gravity.
Abstract:
A method of making products with a functional relief surface (2) with high resolution up to 10 nm, which is copied from a template (1) or carrier of the negative relief of the surface, the so-called master. The template (1) of the relief surface (2) is provided with at least one layer of geopolymer composite, applied in a precursor state (3), in form of a liquid dispersion or grout in plastic or thixotropic condition, whose thickness is the same or greater than the depth of the template relief (1), at temperatures in the interval from the temperature corresponding to properties of the precursor (3) to the temperature corresponding to thermal decomposition of the precursor (3), and after hardening of geopolymer composite the layer or layers is/are separated from the template (1).
Abstract:
Die Erfindung betrifft eine Vorrichtung zum gegebenenfalls gleichzeitigen und gegebenenfalls gleichmäßigen Auftrag aufschäumender Reaktionsgemische auf eine Substrat, ein Verfahren zur Herstellung aufschäumender Reaktionsgemische, eine Vorrichtung zur Herstellung von Sandwich- Verbundelementen sowie ein Verfahren zur Herstellung von geschäumten Sandwich-Verbundelementen.