70results about How to "Good static stability" patented technology

An intake manifold 10 in the air intake tract of an internal combustion engine which has a main flow cross section 14 between an oncoming flow side 12 and an outgoing flow side 13. At least one resonator chamber 23 is arranged on the circumference of the main flow cross section 14 in communication with the main flow cross section 14. The resonator chamber 23 is surrounded by side walls 30 and closed by a cover 28, with the side walls 30 of the resonator chamber 23 and the wall 15 forming the main flow cross section 14 being manufactured together in one piece. A parting plane 31 situated between the cover 28 and the side walls 30 of the resonator chamber 23 is arranged outside of the wall 15 forming the main flow cross section 14.

A particulate filter particularly suited for analytical gravimetric weighing applications is disclosed. The particulate filter includes a polytetrafluoroethylene (PTFE) media supported by a ring and yields stable microgram and submicrogram weighing results. The support ring may be PTFE, metal foil, or another non-hygroscopic polymer such that the mass of the filter does not vary with changes in atmospheric moisture. The filter simplifies the discharge of electrostatic charge buildup such that when a conductive filter media is combined with a conductive ring device, the discharge may be accomplished by placing the filter on a grounded weighing pan or other surface. The particulate filter can simplify filter identification by including identification symbols imprinted on each side of the filter media. Due to the chemically inert qualities of its components, the particulate filter is particularly suited for extraction techniques used during the detection of polycyclic hydrocarbons as is conducted in emissions and ambient air testing.

A vehicle seat (10) comprises a base unit (12) and an upright seat back (14), the base unit (12) being moulded composite materials with optimised fibre orientations and metallic fixing points for attachment to the vehicle and at least two laterally-spaced upstanding arms (46), the seat back (14) being of a moulded composite material with optimised uni-directional fibre orientations and being attached to each upstanding arm (46) via a connection that is distributed along the vertical direction. This vertical distribution can be achieved by providing a plurality of mechanical attachments (48) between the two parts, with the attachments (48) spaced apart in the vertical direction.

The invention discloses a method for preparing a self-emulsifying carbon fiber sizing agent component, which comprises the following steps of: performing graft polymerization reaction on epoxy resin by adopting an emulsion polymerization method to prepare modified epoxy emulsion; and standing the modified epoxy emulsion at 80 DEG C for two hours, adding dropwise ammonia water into the solution after demulsification to make the solution alkaline, standing the solution at 95 DEG C in a sealing way, stirring and hydrolyzing the solution for 3 hours, taking the solution out, acidifying and neutralizing the redundant ammonia water, drying and rinsing the solution to produce modified bisphenol A epoxy resin, placing the synthesis product in the step and the bisphenol A epoxy resin into a container according to a certain weight ratio, and performing phase-inversion emulsification on the mixture at 70 DEG C to prepare a modified epoxy emulsion sizing agent component with certain solid content. The prepared carbon fiber sizing agent component has the characteristics of storage time longer than 12 months, high high-temperature stability, and high dilution stability, so that the method has huge breakthrough compared with the prior art. Carbon fibers sized by the sizing agent have high machining performance and improved inter-layer shear strength.

A mechanical rotational drive has a bar-like torsion element, whereby the torsion element is firmly clamped with a first end in a bearing device. The torsion element can be pivoted with a second free end with respect to the clamped end about the longitudinal axis, forming a rotation axis, of the torsion element between a relaxed position and a tensioned position, whereby the length of the torsion element is reduced with respect to the relaxed position when the torsion element is brought into its tensioned position. A device for transmitting a torque into the torsion element or out of the torsion element is provided in the area of the free end, and a damping device is arranged in the axial direction of the torsion element at a fixed distance from the bearing device and adjacent to the free end of the torsion element, and a damping part is provided on the torsion element in the area of the free end of the torsion element, which damping part in the relaxed position is in friction engagement with the damping device and which in the tensioned position is not engaged with the damping device.

The invention provides a collagen fiber stuffing product which comprises 50%-100% collagen fiber in the stuffing and its Process for preparing. The said stuffing is oakum stuffing mixed collagen fiber deliberating from animal hide with at least another textile fiber; or materials stuffing arise from teasing, bedding web and modeling. The stuffing product in the invention is provided with advantages of well puffy, well rebound, well warming, flameproof and sound absorbing which the current stuffing can not get because it uses collagen fiber as main stuffing. The stuffing produced in the process provided in the invention has no peculiar smell, without putrefaction, without mouldy, and can be used in practice. The product is low cost and settles the problem of leftover bits and pieces of industrial material, so it is environment friendly.

The invention discloses a carbon fiber water-soluble epoxy resin sizing agent and a preparation method thereof. The main components of the sizing agent are main size and deionized water, and the mass ratio of main size to deionized water is 50~80:20~50. The main slurry is composed of modified novolac epoxy resin and allyl polyoxyethylene ether (AEPH), and the mass ratio of the two is 60~90:10~40. To prepare the sizing agent, first react the novolac epoxy resin with diethanolamine to obtain a water-soluble novolac epoxy resin; then mix the water-soluble resin and AEPH in proportion, and dilute it to a certain concentration with deionized water to obtain the sizing agent. The sizing agent has good stability, low cost, no environmental pollution and simple preparation method. The addition of flexible molecule AEPH endows carbon fibers with good post-processing properties. Experiments show that after the carbon fiber is coated with the appropriate sizing agent, the post-processing performance is obviously improved; the performance of the carbon fiber epoxy resin composite material is improved.