A multi-functional polymer concrete using polymer or cement-polymer binders modified with boron nanotubes and heavyweight aggregate particles.

A refractory, coarse ceramic product including at least one granular refractory material, has an open porosity of between 22 and 45 vol.-%, in particular of between 23 and 29 vol.-%, and a grain structure of the refractory material, wherein the medium grain size fraction with grain sizes of between 0.1 and 0.5 mm is 10 to 55 wt.-%, in particular 35 to 50 wt.-%, and wherein the remainder of the grain structure is a finest grain fraction with grain sizes of up to 0.1 mm and/or coarse-grain fraction with grain sizes of more than 0.5 mm.

A refractory, coarse ceramic product including at least one granular refractory material, has an open porosity of between 22 and 45 vol.-%, in particular of between 23 and 29 vol.-%, and a grain structure of the refractory material, wherein the medium grain size fraction with grain sizes of between 0.1 and 0.5 mm is 10 to 55 wt.-%, in particular 35 to 50 wt.-%, and wherein the remainder of the grain structure is a finest grain fraction with grain sizes of up to 0.1 mm and/or coarse-grain fraction with grain sizes of more than 0.5 mm.

[Object]

To provide the friction material for the disc brake such as an automobile, which is manufactured by forming the NAO friction material composition, enabling to restrain the brake vibration during braking in a high temperature.

[Means to Resolve]

In the friction material for the disc brake pad, which is manufactured by forming the NAO friction material composition that does not contain the copper component but contains the binder, the fiber base, the organic friction modifier, the inorganic friction modifier, and the lubricant, the friction material composition contains 1-4 weight % of the cashew dust as the organic friction modifier relative to the entire amount of the friction material composition, 7-12 weight % of the muscovite as the inorganic friction modifier relative to the entire friction material composition, and 0.5-5 weight % of the aluminum particle as the inorganic friction modifier relative to the entire amount of the friction material composition.

[Object]

To provide the friction material for the disc brake pad such as an automobile, which is manufactured by forming the NAO friction material composition, enabling to restrain the brake vibration during braking in a high temperature.

[Means to Resolve]

In the friction material, which is manufactured by forming the NAO friction material composition that does not contain the copper component but contains the binder, the fiber base, the organic friction modifier, the inorganic friction modifier, and the lubricant, the friction material composition contains 5-9 weight % of the binder relative to the entire amount of the friction material composition, 1-4 weight % of the silicone rubber modified phenol resin as a part of the binder relative to the entire amount of the friction material composition, 1-4 weight % of a cashew dust as the organic friction modifier relative to the entire amount of the friction material composition, 0.5-3 weight % of a fused silica with the average particle diameter of 15-40 μm as the inorganic friction modifier relative to the entire amount of the friction material composition, and 0.1-2 weight % of the electromelting zirconium silicate beads with the average particle diameter of 10-30 μm as the inorganic friction modifier relative to the entire amount of the friction material composition.

Provided are a binder in the producing of a casting sand mold according to an ink jet type lamination shaping method in which a binder is printed with respect to sand, a method for producing the binder, and a method for producing a casting sand mold using the binder. Specifically, provided are a binder useful for a casting sand mold of an ink jet type, containing: a resol-type phenolic resin that is obtained by reacting aldehydes (A1), phenols (P1), and a compound (N) having two or more phenolic hydroxyl groups in one molecule or by reacting the aldehydes (A1) and a novolac-type phenolic resin (N1), in the presence of an alkali catalyst, and has a dispersion degree (Mw/Mn) of 1.0 to 3.5 and a phenolic monomer residue of 5% or less, a method for producing the binder, and a method for producing a casting sand mold.

Provided are a binder in the producing of a casting sand mold according to an ink jet type lamination shaping method in which a binder is printed with respect to sand, a method for producing the binder, and a method for producing a casting sand mold using the binder. Specifically, provided are a binder useful for a casting sand mold of an ink jet type, containing: a resol-type phenolic resin that is obtained by reacting aldehydes (A1), phenols (P1), and a compound (N) having two or more phenolic hydroxyl groups in one molecule or by reacting the aldehydes (A1) and a novolac-type phenolic resin (N1), in the presence of an alkali catalyst, and has a dispersion degree (Mw/Mn) of 1.0 to 3.5 and a phenolic monomer residue of 5% or less, a method for producing the binder, and a method for producing a casting sand mold.

The present invention provides a process for producing a friction material for a construction waste filler, including steps of: (S1) sorting a building material, removing fiber impurities, calcining, removing white garbage and metal impurities, and obtaining a first intermediate product; (S2) sifting and removing dust from the first intermediate product, obtaining an intermediate filler, cooling and then soaking after performing calcination on the intermediate filler, dehydrating, drying and obtaining a material to be mixed; (S3) evenly mixing the material to be mixed, graphite, molybdenum disulfide and other media materials, performing enhancement treatment, grinding and obtaining a building filler; and (S4) mixing composite fiber, phenolic resin, the building filler, friction material, pyrite, carbon black, alumina, and brass powder, stirring in a mixer for 20-40 min till all materials are fused, taking out a fused mixture, barreling, and obtaining the friction material for the construction waste filler.

The present invention provides a process for producing a friction material for a construction waste filler, including steps of: (S1) sorting a building material, removing fiber impurities, calcining, removing white garbage and metal impurities, and obtaining a first intermediate product; (S2) sifting and removing dust from the first intermediate product, obtaining an intermediate filler, cooling and then soaking after performing calcination on the intermediate filler, dehydrating, drying and obtaining a material to be mixed; (S3) evenly mixing the material to be mixed, graphite, molybdenum disulfide and other media materials, performing enhancement treatment, grinding and obtaining a building filler; and (S4) mixing composite fiber, phenolic resin, the building filler, friction material, pyrite, carbon black, alumina, and brass powder, stirring in a mixer for 20-40 min till all materials are fused, taking out a fused mixture, barreling, and obtaining the friction material for the construction waste filler.

In an embodiment, a resin formulation is provided. The resin formulation includes a curable resin; a hardener, wherein a concentration of hardener is from 15 wt % to 80 wt % based on a total weight of the curable resin; and a surfactant, wherein a concentration of surfactant is from 0.1 wt % to 5 wt % based on the total weight of the curable resin. In another embodiment, a method of treating a wellbore is provided. The method includes adding to a subterranean wellbore a volume of a resin formulation, the resin formulation comprising a curable resin, a hardener, and a surfactant; and allowing the resin formulation to form a sealant.