摘要:
A process for the preparation of fiber-reinforced moldings for motor vehicles wherein the molding comprises a) from 1 to 96.86% by weight of at least one polycondensate, b) from 1 to 12% by weight of at least one particulate graft copolymer whose soft phase has a glass transition temperature below 0° C. and whose median particle size is from 50 to 1000 nm, c) from 1 to 12% by weight of at least one copolymer made from the following monomers, c1) from 50 to 90% by weight of at least one vinylaromatic monomer, and c2) from 10 to 50% by weight of acrylonitrile and/or methacrylonitrile, based in each case on component c, d) from 0 to 20% by weight of e) from 0.01 to 15% by weight of a polycarbonate, f) from 0.01 to 2% by weight of a carbon black, g) from 0 to 12% by weight of a polymer other than component B, h) from 0 to 20% by weight of a polyester other than component A, i) from 0.1 to 10% by weight of conventional additives, such as UV stabilizers, oxidation retarders, lubricants and mold-release agents. Moldings and composites made from these molding compositions are as described as is the use of the molding compositions, the moldings and the composites.
摘要:
A thermoplastic molding composition comprises, based on the total of components A to C and, if desired, D and E, which in total give 100% by weight, a) as component A, from 10 to 98% by weight of at least one aromatic polyester, b) as component B, from 1 to 50% by weight of at least one particulate graft copolymer whose soft phase has a glass transition temperature below 0° C. and whose median particle size is from 50 to 1000 nm, c) as component C, from 1 to 50% by weight of at least one copolymer made from the following monomers c1) as component C1, from 50 to 90% by weight of at least one vinylaromatic monomer, and c2) as component C2, from 10 to 25% by weight of acrylonitrile and/or methacrylonitrile, d) as component D, from 0 to 25% by weight of other compatible polymers hormogeneously miscible with components A and/or C or dispersible in these, and e) as component E, from 0 to 10% by weight of conventional additives, such as UV stabilizers, carbon black, pigments, oxidation retarders, lubricants and mold-release agents. Moldings made from these molding compositions and used in motor vehicle interiors are also described, as is the use of the molding compositions to produce the moldings.
摘要:
An impact protection plate is provided for mounting on the structure of an aircraft. The impact protection plate includes a first layer, close to the aircraft, made of a fiber-reinforced plastic having a wave-shaped pattern of alternating elevations and depressions, the transverse tensile strength of the fiber-reinforced plastic being greater than 50 MPa. The impact protection plate includes a second layer situated on the first layer, remote from the aircraft, and is made of a fiber-reinforced plastic, the elongation at break of the reinforcement fibers being greater than 3%.
摘要:
A decoupling element for a fuel injection device provides a low-noise construction. The fuel injection device has at least one fuel injection valve and a receiving bore in a cylinder head for the fuel injection valve as well as the decoupling element between a valve housing of the fuel injection valve and a wall of the receiving bore. The spring rigidity of the decoupling element is so low and the decoupling element is placed between the valve housing of the fuel injection valve and the wall of the receiving bore in such a way that the decoupling resonance is located in the frequency range below 2.5 kHz. The fuel injection device is particularly suitable for the direct injection of fuel into a combustion chamber of a mixture-compressing spark-ignited internal combustion engine.
摘要:
A vibrating plate comprises a vibration generator device, which can be controlled in such a manner that the direction of the action of force can be set at a number of locations, particularly in more than two locations. In addition, an advance adjusting device is provided for controlling the vibration generator device whereby the direction of the action of force is set in a position in which a maximum possible advance of the vibrating plate is reached. The direction of the action of force can be changed according to a change in the surroundings of the vibrating plate, particularly to the slope and/or the hardness of a subsoil to be compacted by a soil contact plate. Alternatively, the direction of the action of force can be changed according to the wishes of the operator.
摘要:
An exhaust purification apparatus for internal combustion engine having a selective reduction catalyst that while maintaining a high NOx reduction ratio, inhibits any ammonia discharge downstream of the selective reduction catalyst. In the exhaust purification apparatus (2), a urea selective reduction catalyst (23) comprises a first selective reduction catalyst (231) and, provided downstream of the first selective reduction catalyst (231) in an exhaust passageway (11), a second selective reduction catalyst (232). Further, the exhaust purification apparatus (2) includes a urea injection unit (25) for feeding of a reducing agent upstream of the urea selective reduction catalyst (23) in the exhaust passageway (11) and an ammonia sensor (26) for detection of the ammonia concentration at a site between the first selective reduction catalyst (231) and the second selective reduction catalyst (232) in the exhaust passageway (11). The rate of urea injection, GUREA, by the urea injection unit (25) is determined so that the value of ammonia concentration, NH3CONS, detected by the ammonia sensor (26) is greater than “0.”
摘要:
A percussion tool has a cooling air channel for guiding a cooling air flow from a cooling air fan to an outside wall of a cylinder of an internal combustion engine. The cooling air channel is tapered to the extent that partial cooling air flows guided between the respective cooling fins are branched off the main cooling air flow. In such a way, the flow rate of the cooling air flow in the cooling air channel remains substantially constant, resulting in optimized engine cooling. The cooling air channel may be divided into two cooling air channels downstream of the cylinder. One of the cooling air channels guides cooling air to an exhaust gas system of the internal combustion engine, while the other cooling air channel guides cooling air to an outside wall of the guide housing of a hammer mechanism.
摘要:
A method for determining a cutting trajectory that enables a curve section of a lane to be cut by a vehicle. In the method, information about the curve section is received, and the curve section is divided into at least one curve segment having a segment length and a start curvature, the curve segment being a straight-line segment or a circular arc segment or a curve segment whose curvature is a function of an arc length of the curve segment. This is followed by determination of a cutting trajectory from the at least one curve segment, so that, at a specific point of the curve section, the cutting trajectory has a predetermined offset relative to a center of the lane.
摘要:
The invention relates to a hybrid three-dimensional sensor array, in particular for measuring biological cell assemblies. The sensor array has a plurality of microstructured sensor plates, each having one carrier section on which a plurality of sensor needles are arranged in a comb-like manner, which carry a plurality of electrode surfaces. Furthermore, a plurality of spacer elements are provided, which are fastened between the sensor plates so that both the carrier sections and the sensor needles of adjacent sensor plates are at a distance from each other. The invention further relates to a measuring assembly for measuring electrical activities of biological cell assemblies using such a sensor array.
摘要:
A folding box with a blister pack held therein is produced from a one-piece blank, having a first tab which starts integrally from a narrow side wall and in the use position inside the folding box rises obliquely inwards from this edge toward the opposite wall and is supported resiliently against the latter. A second tab is bent back from the support point of the first tab and in the use position comes to lie between the first wall and the first tab or the second wall, and in turn carries at its edge a locking tab which in the use position engages in a hinged fashion between two blister cavities or cavity rows arranged one behind the other in the insertion direction, and thereby secures the blister pack in locking fashion without the need for beads or other deformations that affect the surface on the folding box.