Abstract: Disclosed herein is a method for preparing a molding material for a fuel cell separator by dissolving an epoxy resin, a hardener and other additives in acetone and mixing a planar expanded graphite powder with the solution. Further disclosed are a molding material prepared by the method and a fuel cell separator produced from the molding material. The fuel cell separator shows very low gas permeability, superior electrical conductivity, sufficient strength, and maximized uniformity throughout the overall structure of the finished product.

Abstract: A self-supporting type pneumatic run-flat tire is optimized in location and gauge of insert rubber at sidewalls, thereby enhancing run-flat and expansion capabilities. The self-supporting type pneumatic run-flat tire comprises an insert and bead rubber composition which comprises syndiotactic 1,2-polybutadiene in order to enhance run-flat capability.

Abstract: Disclosed is a rubber composition for a studless tire tread, comprising natural rubber, styrene-butadiene rubber and butadiene rubber, as raw rubber, and including 1˜10 parts by weight of co-poly-(paraphenylene/3,4-oxydiphenylene terephthalamide) fiber based on 100 parts by weight of the solid content of the raw rubber. Particularly, this invention provides a rubber composition for a studless tire tread, in which not only ice braking performance but also handling stability on dry roads and wear resistance are increased.

Abstract: A method for quantitatively analyzing steer characteristics to acquire steering stability of vehicles/tires. The method divides the steer characteristics into understeer, oversteer, and power-off reaction characteristics, separately analyzes the understeer, oversteer, and power-off reaction characteristics, analyzes the understeer characteristic using a tuning curvature and a turning velocity characteristic in association with a vehicle turning path, analyzes the oversteer characteristic using a slope of a nose angle and a nose-angle time rate in association with a vehicle attitude, analyzes the power-off reaction characteristic using a nose-angle slope, a nose-angle change rate, and a nose-angle change amount, and compares the above-mentioned characteristics with reference data obtained from a Quasi steady-state condition test during which a vehicle driving state is stable, such that it can quantitatively determine the steer characteristics upon receipt of the result of the comparison.

Abstract: A method for quantitatively analyzing steer characteristics to acquire steering stability of vehicles/tires. The method divides the steer characteristics into understeer, oversteer, and power-off reaction characteristics, separately analyzes the understeer, oversteer, and power-off reaction characteristics, analyzes the understeer characteristic using a tuning curvature and a turning velocity characteristic in association with a vehicle turning path, analyzes the oversteer characteristic using a slope of a nose angle and a nose-angle time rate in association with a vehicle attitude, analyzes the power-off reaction characteristic using a nose-angle slope, a nose-angle change rate, and a nose-angle change amount, and compares the above-mentioned characteristics with reference data obtained from a Quasi steady-state condition test during which a vehicle driving state is stable, such that it can quantitatively determine the steer characteristics upon receipt of the result of the comparison.

Abstract: A tread pattern of a tire is disclosed which has wave-shaped and straight grooves capable of maintaining desired lock rigidity and hydroplaning performance of the tire. In the tread pattern, which includes circumferential main grooves, transversal grooves formed between adjacent ones of the circumferential main grooves, and blocks formed between adjacent ones of the transversal grooves, at least one of the circumferential main grooves has a wave-shaped structure having opposite inclined side surfaces each comprising an upper surface portion having first and second curved surfaces alternately arranged along a circumferential direction of the tire while having substantially opposite curvatures, respectively, to form a continuous wave-shaped surface, and a lower surface portion having a straight side surface connected to the alternate first and second curved surfaces while extending along the circumferential direction to form a circumferential straight groove.

Abstract: Disclosed herein is a method for preparing a molding material for a fuel cell separator by dissolving an epoxy resin, a hardener and other additives in acetone and mixing a planar expanded graphite powder with the solution. Further disclosed are a molding material prepared by the method and a fuel cell separator produced from the molding material. The fuel cell separator shows very low gas permeability, superior electrical conductivity, sufficient strength, and maximized uniformity throughout the overall structure of the finished product.

Abstract: Disclosed herein is a carbon composite separator for a fuel cell. The carbon composite separator comprises a separator body, and a partition plate made of a highly conductive and gas-impermeable material and embedded in the separator body. The carbon composite separator can completely prevent an increase in gas permeability caused by improper raw materials or unsuitably selected production processes of a carbon composite material, or various defects contained within the separator body.

Abstract: Disclosed is a method for producing a carbon composite material for a fuel cell separator, comprising dry homogenizing graphite powder as a conductive filler, a solid phenolic resin as a binder, and additives for improving physical properties, pouring the homogeneous mixture into a heated mold; and subjecting the homogeneous mixture to compression thermoforming. In accordance with the present invention, it is possible to prepare a carbon composite material for a fuel cell separator in a more simplified and efficient manner while requiring no preparation of intermediate materials such as granular particles and no graphitization treatment as used in conventional methods.

Abstract: The present invention relates to an improved venting apparatus installed in a tire vulcanizing mold. In the venting apparatus, an inner diameter of a center through hole formed in the casing is gradually increased in an upper direction and is gradually decreased in a lower direction for thereby forming a tapered shape. The angles of the slant surfaces of the valve head point-contacting with an upper corner portion of the center through hole are different, so that a discharging capability of air is enhanced, and it is possible to prevent a formation of a vent rubber in a finished tire which vent rubber is formed when a rubber flows into a venting apparatus. In addition, it is possible to prevent an error operation during vulcanization and to extend a life span of a venting apparatus. The maintenance is easier.

Abstract: An automated system for storing pallets for loading green tires, taking said pallets into a warehouse and taking said pallets out of the warehouse includes a conveyor section for taking pallets on which green tires are loaded into a warehouse; a gantry robot section for transferring said pallets to be taken out of the warehouse into a conveyor for taking said pallets out of the warehouse when said pallets are taken out of the warehouse while the warehoused pallets are transferred to a location on which said pallets are stacked; and a conveyor section for taking said pallets out of the warehouse by said gantry robot, in which the above gantry robot is operated in the directions of X axis, Y axis and Z axis.

Abstract: A method for scanning a bar code printed on a tire and an equipment therefor are provided. The tire is moved in one direction, and the moving tire is sensed to stop at a predetermined position. Then, the tire stationed at the predetermined position is rotated to scan the bar code of the tire using a scanner fixed so as to scan only a part of the tire and then the tire is moved in one direction to be withdrawn from the predetermined position, thereby the bar code directly printed on the tire is accurately scanned.