Abstract:
The present invention discloses a polymer blend of sulfonated polymer such as poly(ether ether ketone) and poly(amide imide) for use as an proton-conducting membrane. The poly(amide imide) is prepared by conducing a ring-opening and condensation reactions of diisocyanate and 1,2,4-benzenetricarboxylic anhydride (TMA). The polymer blend has a reduced methanol uptake and methanol permeability while maintaining good proton conductivity, and thus is suitable for use as a proton-conducting membrane of a fuel cell. The present invention also discloses a process for preparing the poly(amide imide).
Abstract:
A ribbon roller is fixed in a ribbon cartridge via a fixing element. The fixing element includes an accommodation means and a fastening element. The accommodation means fixes a tab of the ribbon roller, and the fastening element engages the ribbon cartridge. When transporting the ribbon cartridge, the fixing element is capable of preventing the ribbon roller from rotating so as to prevent the ribbon from wrinkling and affecting printing quality.
Abstract:
A composite bipolar plate for a polymer electrolyte membrane fuel cell (PEMFC) is prepared as follows: a) compounding vinyl ester and graphite powder to form bulk molding compound (BMC) material, the graphite powder content ranging from 60 wt % to 95 wt % based on the total weight of the graphite powder and vinyl ester, wherein carbon fiber 1-20 wt %, modified organo clay or noble metal plated modified organo clay 0.5-10 wt %, and one or more conductive fillers selected form: carbon nanotube (CNT) 0.1-5 wt %, nickel plated carbon fiber 0.5-10 wt %, nickel plated graphite 2.5-40 wt %, and carbon black 2-30 wt %, based on the weight of the vinyl ester resin, are added during the compounding; b) molding the BMC material from step a) to form a bipolar plate having a desired shaped at 80-200° C. and 500-4000 psi.
Abstract:
A dual-mode position-locating device for receiving signals from a communication satellite to locate a user, includes a Global Positioning System (GPS) processor; a first data storage region for storing a control program accessible to the GPS processor to allow the GPS processor to analyze and process the received signals; a second data storage region controlled by the control program and for storing a high-sensitivity operational program that precisely locates the user; a third data storage region controlled by the control program and for storing a normal-sensitivity operational program that roughly locates the user; and an input unit electrically connected to the GPS processor and controlled by the control program, allowing the user to input a switching signal to the input unit so as to switch the GPS processor to execute either the high-sensitivity operational program or the normal-sensitivity operational program to perform operations for the received signals.
Abstract:
A display panel driving device is provided. The display panel driving device includes a host and a driving chip. The driving chip includes a store unit, a driving module and a transmitting interface unit. The host controls the transmitting interface unit to switch sources of image data received by the driving module according to content of the image data, so as to determine whether the driving module receives the image data from the store unit or not.
Abstract:
A light emitting diode device is provided. The light emitting diode device comprises a composite substrate and a light emitting diode disposed on the composite substrate. The composite substrate comprises a first carbon fiber composite layer which is able to conduct heat rapidly in the direction of carbon fiber, such that the heat generated from the light emitting diode module can be dissipated rapidly.
Abstract:
A hinge has a guiding component, a sliding component and a pivoting device. The guiding component has a base and a track. The base has a top, a free end, a pivoting end and a pivoting portion. The pivoting portion is formed on the pivoting end. The track is mounted on the top of the base near the free end and has two wings. The wings protrude out respectively and traversely from the track. The sliding component is slidably mounted around the track and has a bottom and two recesses. The recesses are formed on the bottom of the sliding component, are opposite to each other and are respectively mounted around the wings. The pivoting device is pivotally mounted to the pivoting portion of the guiding component. Therefore, the guiding component is mounted slidably on the guiding component and pivotally to the pivoting device.
Abstract:
A composite bipolar plate for a polymer electrolyte membrane fuel cell (PEMFC) is prepared as follows: a) compounding vinyl ester and graphite powder to form bulk molding compound (BMC) material, the graphite powder content ranging from 60 wt % to 95 wt % based on the total weight of the graphite powder and vinyl ester, wherein carbon nanotubes together with a polyether amine dispersant or modified carbon nanotubes 0.05-10 wt %, based on the weight of the vinyl ester resin, are added during the compounding; b) molding the BMC material from step a) to form a bipolar plates having a desired shaped at 80-200° C. and 500-4000 psi.
Abstract:
A hinge assembly has a pintle, a rotating bracket, a sliding bracket, a mounting bracket, a compression assembly and an elastic member. The rotating bracket is mounted rotatably around the shaft and has a latching portion. The sliding bracket is attached securely to the pintle and has a track. The mounting bracket and a latching arm. The latching arm selectively presses against the latching portion to hold the hinge closed. The compression assembly is mounted around and expands when the pintle is rotated to close. The elastic member is compressed by expansion of the compression assembly so automatically rotates the pintle to open. Therefore, with the hinge mounted in an electronic device, when the latching portion is slid out of the latching arm, the hinge is forced to open by the elastic member and compression assembly so a cover pops up and is opened easily.