Disclosed is a moderator for moderating neutrons, including a substrate and a surface treatment layer or a dry inert gas layer or a vacuum layer coated on the surface of the substrate, wherein the substrate is prepared from a moderating material by a powder sintering device through a powder sintering process from powders or by compacting powders into a block, and the moderating material includes 40% to 100% by weight of aluminum fluoride; wherein the surface treatment layer is a hydrophobic material; and the surface treatment layer or the dry inert gas layer or the vacuum layer is used for isolating the substrate from the water in the environment in which the substrate is placed. The surface treated moderator can avoid the hygroscopic or deliquescence of the moderating material during use, improve the quality of the neutron source and prolong the service life.

A curable composition comprises (A) a first siloxane oligomer being free from a siloxane unit represented by the following formula (I) and containing an alkoxy-group-containing siloxane unit, (B) a second siloxane oligomer containing a siloxane unit represented by the formula (I) and an alkoxy-group-containing siloxane unit, (C) a silicone oil having a kinetic viscosity at 25 C. of not less than 100 mm.sup.2/s, (D) at least one curing catalyst selected from the group consisting of a metal alkoxide, a metal chelate compound, and a metal carboxylate, and (E) a solvent containing an organic solvent having a vapor pressure at 20 C. of not less than 1 kPa.

An exterior sheathing cementitious panel which prevents water penetration and air leakage is provided. Methods for manufacturing exterior sheathing cementitious panels with a highly efficient integrated air/water barrier membrane are provided as well.

A honeycomb body (100) having a porous ceramic honeycomb structure with a first end (105), a second end (135), and a plurality of walls (115) having wall surfaces defining a plurality of inner channels (110). A porous material is disposed on one or more of the wall surfaces of the honeycomb body (100). A method for forming a honeycomb body (100) includes depositing a porous inorganic material on a ceramic honeycomb body (100) and binding the porous inorganic material to the ceramic honeycomb body (100) to form the porous layer.

A honeycomb body (100) having a porous ceramic honeycomb structure with a first end (105), a second end (135), and a plurality of walls (115) having wall surfaces defining a plurality of inner channels (110). A porous material is disposed on one or more of the wall surfaces of the honeycomb body (100). A method for forming a honeycomb body (100) includes depositing a porous inorganic material on a ceramic honeycomb body (100) and binding the porous inorganic material to the ceramic honeycomb body (100) to form the porous layer.

Fired clay moldings are hydrophobicized by applying a long chain alkyl-substituted alkoxysilane or hydrolysate thereof having up to 5 silicon atoms, and an alkoxy-functional silicone resin. The moldings, which may be roof tiles, are hydrophobicized to a significant depth, without discoloration.

Fired clay moldings are hydrophobicized by applying a long chain alkyl-substituted alkoxysilane or hydrolysate thereof having up to 5 silicon atoms, and an alkoxy-functional silicone resin. The moldings, which may be roof tiles, are hydrophobicized to a significant depth, without discoloration.

A process for manufacturing a composite part includes introducing an adhesion promoter into the pores of a fibrous preform formed by threads covered with a coating having OH groups on its surface, the adhesion promoter including an electron-withdrawing group G1 that is reactive according to a reaction of substitution or of nucleophilic addition with the OH groups, and a reactive group G2; grafting the adhesion promoter to the surface of the coating by a reaction of substitution or nucleophilic addition of the OH groups on the group G1; introducing a ceramic precursor resin into the pores of the fibrous preform; polymerizing the resin introduced and bonding the grafted adhesion promoter to the resin by chemical reaction between these two compounds at the level of the group G2, and forming a ceramic matrix phase in the pores of the fibrous preform by pyrolysis of the polymerized resin.

A method for producing a building material includes a first step of applying a first ultraviolet-curable paint onto an inorganic material containing a woody reinforcement and incompletely curing the first ultraviolet-curable paint, a second step of applying a second ultraviolet-curable paint and completely curing the second ultraviolet-curable paint, a third step of polishing the completely cured second ultraviolet-curable paint to smoothen a surface of the completely cured second ultraviolet-curable paint, and a fourth step of applying an enamel paint and curing the enamel paint. In the second step, the second ultraviolet-curable paint is applied while the first ultraviolet-curable paint is incompletely cured.

A method for producing a building material includes a first step of applying a first ultraviolet-curable paint onto an inorganic material containing a woody reinforcement and incompletely curing the first ultraviolet-curable paint, a second step of applying a second ultraviolet-curable paint and completely curing the second ultraviolet-curable paint, a third step of polishing the completely cured second ultraviolet-curable paint to smoothen a surface of the completely cured second ultraviolet-curable paint, and a fourth step of applying an enamel paint and curing the enamel paint. In the second step, the second ultraviolet-curable paint is applied while the first ultraviolet-curable paint is incompletely cured.