Abstract: An ablator is provided to improve a fuselage protection performance while having flexibility. The ablator includes a base material formed from fiber, granular resin, and binder resin impregnated in the fiber to couple the granular resin and the base material.

Abstract: A cast mold fabricating device supplies thickener-coated sand and steam into a mold forming die at an optimum timing to shorten a mold fabrication time. The device includes the die 2 with an injection inlet 1, a sand supply head 4 for supplying and filling the thickener-coated sand 3 into the die, a steam supply head 5 for supplying steam into the die 2 to solidify and/or cure a thickener of the sand by application of heat of the steam. The device further includes a vertical drive 6 for lowering the sand supply head 4 to a position where the injection inlet 1 is connected to a sand nozzle 8 of the sand supply head 4, and a horizontal drive 7 for advancing the steam supply head 5 to a position where the injection port 1 is connected to a steam nozzle 9 of the steam supply head 5.

Abstract: The binder coated refractories comprises the refractory aggregates and the solid-form coating layer which comprises the sugar group as the binder and which is provided to the surface of the refractory aggregates. According to this, the sugar group is used as the binder for bonding the refractory aggregates. Further, even if the sugar group is thermally decomposed, the sugar group emits the carbon dioxide and the water. Therefore, there is little likelihood of emitting the harmful gas. Therefore, it is possible to reduce the environmental pollution. Further, the sugar group is thermally decomposed easily. Therefore, it is possible to manufacture the casting mold having the good breaking property.

Abstract: A composition for a heat insulator, a heat insulator, and a spacecraft equipped with the heat insulator are provided which are able to satisfy a desired level of heat insulation performance while suppressing recession. The composition for a heat insulator comprises a fibrous substance, inorganic foam particles, a thermosetting resin and a foaming agent, wherein the fibrous substance includes at least a first fibrous substance, and a second fibrous substance composed of a material different from the first fibrous substance, the melting point of the first fibrous substance is higher than the melting point of the second fibrous substance, and the thermal conductivity of the second fibrous substance is lower than the thermal conductivity of the first fibrous substance.

Abstract: Provided is a composition for a lightweight heat-insulating material having high heat-insulating properties. The composition for a heat-insulating material contains a fibrous material, inorganic foamed particles, a thermosetting resin, and a foaming agent. Since the composition for a heat-insulating material contains the inorganic foamed particles and the foaming agent in addition to the fibrous material and the thermosetting resin, the weight can be reduced and the thermal conductivity can be lowered due to the inorganic foamed particles having low specific gravity. Further, the thermosetting resin is caused to foam by the foaming agent, and the weight can be reduced and the thermal conductivity can be lowered. A lightweight heat-insulating material having high-insulating properties can be obtained.

Abstract: To provide a casting mold manufacturing apparatus using steam heating. The apparatus includes a forming die having a cavity, a resin-coated sand supply section for supplying a resin-coated sand into the cavity, a steam supply section for supplying steam into the cavity, and a steam discharge section for discharging the steam from the cavity. At least a portion of the forming die is composed of a porous material having pores with an average diameter smaller than an average particle diameter of the resin-coated sand. At least a portion of the steam is supplied into the cavity through the porous material. Since it is possible to uniformly supply the steam into the cavity, a homogeneous casting mold can be manufactured.

Abstract: An apparatus and a method for producing a casting mold are provided, according to which the casting mold having a complex shape can be obtained with stable quality. The apparatus comprises a mold having a cavity therein, a steam supply unit, a steam supply passage connected to the cavity, steam discharge passages, flow regulators disposed in the steam discharge passages to regulate an amount of the steam discharged from the cavity, and a control unit for controlling the flow regulators. After a resin-coated sand prepared by coating a refractory aggregate with a binder resin is injected into the cavity of the heated mold, superheated steam is supplied into the cavity. At this time, the control unit controls the flow regulators such that the cavity is uniformly filled with the superheated steam.

Abstract: To provide a casting mold manufacturing apparatus using steam heating. The apparatus includes a forming die having a cavity, a resin-coated sand supply section for supplying a resin-coated sand into the cavity, a steam supply section for supplying steam into the cavity, and a steam discharge section for discharging the steam from the cavity. At least a portion of the forming die is composed of a porous material having pores with an average diameter smaller than an average particle diameter of the resin-coated sand. At least a portion of the steam is supplied into the cavity through the porous material. Since it is possible to uniformly supply the steam into the cavity, a homogeneous casting mold can be manufactured.

Abstract: A carbon-phenol resin molding compound is provided, which is preferably used to obtain molded articles having high electrical and thermal conductivities as well as good mechanical strength. The resin molding compound is prepared by reacting a phenol with an aldehyde in the presence of a catalyst, while mixing them with a carbon powder such that a content of the carbon powder in the molding compound is 75 wt % or more. The catalyst is at least one selected from tertiary amines, carbonates, hydroxides and oxides of alkali metals or alkali earth metals.

Abstract: The first group of the present invention is a wood reinforcing carbon fiber prepreg, which is produced through impregnation with a mixture resin at a viscosity of 3 to 150 poises at 20° C., wherein the mixture resin contains one or more resins selected from resorcinol based resins and resol type phenol based resins, formaldehydes as curing agents and inorganic acids or organic acids as curing catalysts. The first group of the present invention is a wood reinforcing carbon fiber prepreg having a longer usable time and being capable of imparting the rigidity and elastic modulus of carbon a fiber to the wood to be reinforced at a high ratio. The second group of the present invention is a wood reinforcing carbon fiber prepreg attached wood based sheet, wherein a wood based sheet of a thickness of 0.01 mm to 0.06 mm is arranged on at least one face of a carbon fiber prepreg sheet produced through impregnation with a mixture resin containing a thermosetting resin and a curing agent or a curing catalyst.

Abstract: A process of fabricating a porous silicone product utilizing a silicone emulsion capable of forming an elastomer by removal of water therefrom. The silicone emulsion comprises a water emulsion of an organopolysiloxane, a cross-linking agent, and a curing catalyst. The process comprises the steps of freezing the silicone emulsion, and drying the frozen silicone emulsion, whereby water is sublimed therefrom and the porous silicone product is obtained. The resulting porous silicone product is best utilized as a selective permeable membrane for separation of a liquid component from a liquid solution containing two or more liquid components.

Abstract: An electromagnetic wave shielding material comprises a composite carbon-resin compound obtained by reacting to proceed polymerization of a resin forming material with carbon powder intermixed therewith. The resulting compound has carbon powder substantially uniformly dispersed in the resin and exhibit superior electromagnetic wave shielding effect, in addition to good fire resistance. The resin may be phenol, melamine, furan or the like, and the carbon powder is preferred to be incorporated at a content of not less than 40% of the total weight.

Abstract: An improved method for separating a particular liquid component from a solution containing two or more liquid components. The method employs a vessel divided into a solution chamber and a vacuum chamber by a permeable membrane which is a porous membrane exhibiting a superior affinity to the particular component intended to be separated than to the other components. The solution is placed in the solution chamber out of direct contact with the permeable membrane at which condition a vacuum is applied to the vacuum chamber to evaporate the solution in the chamber and draw the resulting vapors through the permeable membrane into the vacuum chamber, thereby collecting the particular component from the solution in a vapor-to-vapor permeation through the permeable membrane.

Abstract: A novel selective permeable membrane is made by cross-linking of chitosan by aldehyde, preferably by dialdehyde. The dialdehyde cross-linked membrane has a remarkably high separation efficiency for water-alcohol solution due to hydrophilic property of chitosan and its very dense structure obtained by the cross-linking of chitosan with dialdehyde.

Abstract: A novel method of separating a particular component from its liquid solution by the use of a vessel divided into a solution chamber receiving the liquid solution and a vacuum chamber by a permeable membrane having selective permeability. The method is characterized to evacuate the vacuum chamber while keeping the liquid solution out of direct contact with the permeable membrane such that the permeation of the particular component through the permeable membrane can be effected in vapor-to-vapor phase environment, which is found to give a superior separation result for the liquid solution.