摘要:
The present invention relates to a prepreg which is free from the phenomenon that air is trapped between layers to generate voids, has good handling characteristics and can produce molded articles having any complicated shape and also relates to a method of producing the prepreg. A reinforced-fiber sheet is impregnated with a matrix resin so as to form a continuous resin layer at least in the inside thereof, and then, a protective film having an irregular surface is applied to at least one surface of the reinforced-fiber sheet impregnated with the matrix resin such that the irregular surface faces the reinforced-fiber sheet. In this state, the prepreg is allowed to leave at 30 to 60° C. under the atmosphere for 12 hours or more. The resulting prepreg (1) is provided with a continuous resin layer (3a) which exists therein, wherein at least one surface of one side of the prepreg is constituted of a resin-impregnated part (3b) where the impregnated resin substantially exists and a fiber part (2a) where no resin substantially exists.
摘要:
An actuator includes: a coil for excitation; a stator excited with different magnetic poles by energization of the coil; a rotor magnetized with different magnetic poles in a circumferential direction, and rotated by magnetic force generating between the rotor and the stator; and an outputting member rotated in conjunction with the rotor and outputting rotational movement of the rotor to a member. The outputting member fits onto the rotor, and the rotor has at least one of a recess portion and a projection portion at a fitting surface of the rotor. The outputting member is jointed with the rotor so as to have a shape corresponding to the at least one of the recess portion and the projection portion by welding.
摘要:
An epoxy resin composition suitably used for a prepreg which can complete curing in a short time even at a low temperature and secure a sufficient usable period under preservation at room temperature, in comparison with conventional epoxy resin compositions. An epoxy resin composition comprising at least one of an epoxy resin, an amine compound having at least one sulfur atom in the molecule thereof, and a reaction product of an epoxy resin and an amine compound having at least one sulfur atom in the molecule thereof, and an amine compound having at least one sulfur atom in the molecule thereof, and a urea compound and a dicyandiamide, wherein each of the contents of the sulfur atom and the urea compound in the epoxy resin composition is respectively 0.2 to 7% by mass and 1 to 15% by mass.
摘要:
An epoxy resin composition suitably used for a prepreg which can complete curing in a short time even at a low temperature and secure a sufficient usable period under preservation at room temperature, in comparison with conventional epoxy resin compositions. An epoxy resin composition comprising at least one of an epoxy resin, an amine compound having at least one sulfur atom in the molecule thereof, and a reaction product of an epoxy resin and an amine compound having at least one sulfur atom in the molecule thereof, and an amine compound having at least one sulfur atom in the molecule thereof, and a urea compound and a dicyandiamide, wherein each of the contents of the sulfur atom and the urea compound in the epoxy resin composition is respectively 0.2 to 7% by mass and 1 to 15% by mass.
摘要:
The rotational torque of an electromagnetic actuator having a stator and rotor, such as a stepping motor, is increased.The electromagnetic actuator includes a rotor (30) having multiple magnetic poles (Nr1, Nr2, Nr3, Nr4, Nr5, Sr1, Sr2, Sr3, Sr4, Sr5) on a circumferential surface (31) and a plurality of stators (10, 20) in an electromagnet form. The stator (10, 20) has a pair of magnetic poles (13, 14, 23, 24) facing the circumferential surface (31) of the rotor (30), and an auxiliary yoke (40, 50) made of a soft magnetic material member extending in a circumferential direction (A) over an angular range (γ1, γ2) larger than a spread angle (α) of the magnetic poles (Nr, Sr) of the rotor (30) in the circumferential direction (A) is provided between the pair of magnetic poles (13, 14, 23, 24).
摘要:
A printing apparatus comprising a keyboard which inputs characters, symbols, etc., to the apparatus and a display which displays the input characters, symbols, etc. A CPU supplies to a printing head dot pattern information in accordance with the information on the input character, symbols, etc., stored in a main memory. It also inverts the dot pattern information upside down, as needed. The printing head may print onto a lettering tape.
摘要:
This invention provides a chemical supply system for supplying chemical solution from a chemical tank. The chemical supply system includes a chemical supply pump, a pressure adjuster configured to suction the chemical solution into the pump chamber by setting the pressure of working gas to a suction pressure, a switching controller configured to switch the suction-side opening-closing valve to the open state for starting to fill the pump chamber with the chemical solution, a pressure detector configured to detect at least one of a gas pressure in a space connected to the working chamber and a gas pressure in the working chamber when the suction-side opening-closing valve is switched to the open state and starts an inflow of the chemical solution to the pump chamber, and a suction controller configured to control the suction pressure applied to the working chamber by the pressure adjuster, based on a detection result of the pressure detector.
摘要:
Disclosed is a feature that collects dust particles that arise from a processing operation of an impact tool. The dust collection device collects dust that arises from of a processing operation and is attached to the impact tool that performs a pre-determined processing operation on a processed member by way of a tool bit mounted to the tip region of the tool body being linearly operated at least in the lengthwise direction. The dust collection device has a dust collection unit of which the tip opens as a dust intake port and the contour shape is formed unevenly around the long axis of the tool bit. The position of the dust collection unit is freely selected around the long axis of the tool bit, and it is possible to cause the position to change around the long axis of the bit.
摘要:
An epoxy resin composition suitably used for a prepreg which can complete curing in a short time even at a low temperature and secure a sufficient usable period under preservation at room temperature, in comparison with conventional epoxy resin compositions. An epoxy resin composition comprising at least one of an epoxy resin, an amine compound having at least one sulfur atom in the molecule thereof, and a reaction product of an epoxy resin and an amine compound having at least one sulfur atom in the molecule thereof, and an amine compound having at least one sulfur atom in the molecule thereof, and a urea compound and a dicyandiamide, wherein each of the contents of the sulfur atom and the urea compound in the epoxy resin composition is respectively 0.2 to 7% by mass and 1 to 15% by mass.
摘要:
A feature that contributes to an improvement in the attachment to an impact tool of a dust collection device that is attached to the impact tool and that collects dust particles that said impact tool generates. The dust collection device collects dust that the impact tool generates and is attached to said impact tool that, in the lengthwise direction, linearly operates a tool bit that is mounted to the tip region of a tool body. The dust collection device has: a dust collection unit that has a dust intake port at the tip; and a dust transfer unit that is connected with the dust collection unit in order to transfer dust sucked in from the dust intake port towards the downstream side. The dust collection unit is held by the shaft section of the tool bit, and the dust transfer unit is held by the tool body.