摘要:
A process for producing foamed particles of a polyolefin resin which comprises dispersing polyolefin resin particles in water in a closed vessel, feeding a volatile blowing agent into the closed vessel, heating the dispersion to a temperature above the softening point of the polyolefin resin particles but below their melting point, opening a discharge port provided within the closed vessel below the water surface and releasing the aqueous dispersion containing the polyolefin resin particles impregnated with the blowing agent into an atmosphere kept at a lower pressure than the pressure within the closed vessel; wherein(i) when the last portion of the aqueous dispersion containing the polyolefin resin particles impregnated with the blowing agent is released from the closed vessel, the pressure within the closed vessel is at least 5 kg/cm.sup.2.G, and(ii) in order to maintain the pressure within the closed vessel at the time of releasing the last portion of the aqueous dispersion from the closed vessel at at least 5 kg/cm.sup.2.G, a pressurized inorganic gas is introduced into the closed vessel before the heating of the aqueous dispersion is started, provided that the inorganic gas is not freshly supplied to the closed vessel after starting the releasing of the aqueous dispersion.
摘要翻译:一种生产聚烯烃树脂的泡沫颗粒的方法,包括将密封容器中的聚烯烃树脂颗粒分散在水中,将挥发性发泡剂进料到密闭容器中,将分散体加热到高于聚烯烃树脂颗粒的软化点但低于 其熔点,在密封容器内设置在水面下方的排出口,将含有浸渍有发泡剂的聚烯烃树脂颗粒的水分散体释放到保持在比密闭容器内的压力低的气氛中; 其中(i)当含有浸渍有发泡剂的聚烯烃树脂颗粒的水性分散体的最后部分从密闭容器中释放时,密闭容器内的压力为至少5kg / cm 2 G,和(ii) 为了在密封容器中以至少5kg / cm 2释放水分散体的最后部分时将密封容器内的压力保持在至少5kg / cm 2 G,加压无机气体在加热之前被引入密闭容器中 开始水分散体,条件是开始释放水分散体后,无机气体不会新鲜地供应到密闭容器中。
摘要:
A process for producing propylene random copolymer resin foamed particles is disclosed. The process comprises dispersing propylene-ethylene random copolymer resin particles having an ethylene content of from 1 to 12% by weight in water in a closed vessel, feeding an inorganic gas into the closed vessel to raise the pressure within the closed vessel to at least 5 Kg/cm.sup.2 G, heating the dispersion to a temperature above the melting point of said copolymer resin particles but not higher than that by 25.degree. C. or more, opening a discharge port provided in the closed vessel below the water surface, and releasing the copolymer resin particles together with water as a dispersing medium into an atmosphere having a lower pressure than in the closed vessel. A foamed product produced by molding the foamed particles has firm bondage among the particles and excellent mechanical strength.
摘要翻译:公开了一种生产丙烯无规共聚物树脂发泡颗粒的方法。 该方法包括将乙烯含量为1至12重量%的丙烯 - 乙烯无规共聚物树脂颗粒分散在密封容器中的水中,将无机气体进料到密闭容器中,将密封容器内的压力升至至少5 Kg / cm2G,将分散体加热到高于所述共聚物树脂颗粒的熔点但不高于25℃或更高的温度的温度,打开设在水表面下方的封闭容器中的排出口,并释放共聚物 树脂颗粒与水一起作为分散介质进入压力低于在密闭容器中的压力的气氛中。 通过模制发泡颗粒而生产的发泡产品在颗粒之间具有牢固的粘结和优异的机械强度。
摘要:
A semiconductor device includes a GaN electron transport layer provided over a substrate; a first AlGaN electron supply layer provided over the GaN electron transport layer; an AlN electron supply layer provided over the first AlGaN electron supply layer; a second AlGaN electron supply layer provided over the AlN electron supply layer; a gate recess provided in the second AlGaN electron supply layer and the AlN electron supply layer; and a gate electrode provided over the gate recess.
摘要:
There is provided an image taking apparatus capable of preferably correcting both the camera shake and the subject shake in the still picture photography. The image taking apparatus has a system control section that determines whether a subject is a still subject or a dynamic subject. When the system control section determines that the subject is the still subject, the system control section instructs a timing generation section to cause an imaging section to generate a series of images, so that an image piling up section performs piling up of images in accordance with a computed result with a movement vector computing section. Thus, the camera shake is corrected. When the system control section determines that the subject is the dynamic subject, the system control section instructs the timing generation section to perform a single photography at a predetermined shutter time free from the subject shake.
摘要:
A semiconductor memory card which can be attached to a host apparatus and can be removed from the host apparatus includes a plurality of data transfer terminals, and an internal circuit transmitting a first signal to at least one first data transfer terminal comprising at least one of the data transfer terminals and transmitting a second signal to at least one second data transfer terminal comprising at least one of the data transfer terminals different from the first data transfer terminals. The second signal is generated by executing a logical operation on the first signal.
摘要:
An electrode module includes a working electrode, a counter electrode, a reference electrode and a well (container) for retaining an electrolytic solution and is used in electrochemical measuring instruments. This electrode module is produced by integrating the well with at least one of the working electrode, the counter electrode and the reference electrode. This integrated electrode includes a chip-like electrode having a thin membrane of an electrode material formed on the surface of a chip-like base metal. This chip-like electrode is disposed on and integrated with the bottom of the well in a detachable manner. There is provided the compact, low price electrode module of high repetition use efficiency with no need of maintenance and having easy handling.
摘要:
A heat transfer member which is capable of enhancing efficiency of heat dissipation, and a connector including the heat transfer member. On the surface of an elastic body arranged between an LED and a heat sink, a heat conduction metal thin film that transfers heat generated in the LED to the heat sink is formed. The member may also include an electrical conduction metal film, whereby the member may serve as both a heat transfer member and as an electrical connector.
摘要:
A solid-state image pickup device including a solid-state image pickup element which is curved in a light incident direction and a curvature changing portion which changes a curvature of the solid-state image pickup element, and an optical instrument including a lens unit and a solid-state image pickup element which is curved toward the lens unit and picks up taking an image focused by the lens unit wherein the curvature changing portion changes a curvature radius of the solid-state image pickup element so that the solid-state image pickup element is curved at a first curvature in a telephoto mode and the solid-state image pickup element is curved at a second curvature larger than the first curvature in a wide-angle mode.
摘要:
When a trouble is developed in an IP exchange (TM) 2 or a circuit (network) 5, a backup exchange 6 (backup TM) is switched over from a waiting system to an operating system, and all IP terminals Eqi inside lodgments A, B, . . . N also log out from the IP exchange (TM) 2, and transmit the IP addresses to the backup exchanges 6 (backup TM) inside own lodgment, respectively, and log in there with a result that the extension telephone calls inside own lodgment is made possible by a control of the backup exchange 6 (backup TM), and therefore, even when a fault occurs in the IP exchange or the circuit, the IP terminals inside the lodgment are backed up and the actuations of the IP terminals are continuously operated, and for example, the extension phone calls inside the lodgment can be realized.
摘要:
A photographing optical system includes at least one of a positive lens and diffractive optical element being provided closer to an object side of the system than an intersection P of a light axis and paraxial chief ray, and a negative lens, provided closer to an image side than the intersection. The positive lens and the negative lens are formed of materials satisfying the following conditions when the maximum height of a paraxial marginal ray, passing through a lens surface, from the light axis at a location closer to the object side than the intersection is greater than a maximum height of the paraxial marginal ray, passing through a lens surface, from the light axis at a location closer to the image than the intersection: −0.0015 ×νd +0.6425