A montmorillonite slurry, containing a lithium-immobilized montmorillonite having a cation exchange capacity of 50 meq/100 g or less, ammonia, water, and an organic solvent, in which the organic solvent includes at least one kind of organic solvent selected from the group consisting of acetonitrile and methyl ethyl ketone, the proportion occupied by the organic solvent in the total amount of the water and the organic solvent in the slurry is 10% by mass or more and 90% by mass or less, and the content of ammonia in the slurry is 0.1 mmol or more per gram of the lithium-immobilized montmorillonite in the slurry; a method of producing the same; and a clay film.

Provided are a novel metahalloysite powder and a production method thereof, which are not present in the prior art. The metahalloysite powder is a powder which comprises granules of aggregated metahalloysite comprising metahalloysite nanotubes, which are tube-shaped metahalloysite. The production method comprises a step of preparing a halloysite slurry which comprises halloysite nanotubes, a step for formulating a powder from the slurry, and a step for firing the formulated powder at a firing temperature of 500° C. or above.

Provided are a novel metahalloysite powder and a production method thereof, which are not present in the prior art. The metahalloysite powder is a powder which comprises granules of aggregated metahalloysite comprising metahalloysite nanotubes, which are tube-shaped metahalloysite. The production method comprises a step of preparing a halloysite slurry which comprises halloysite nanotubes, a step for formulating a powder from the slurry, and a step for firing the formulated powder at a firing temperature of 500° C. or above.

The present invention relates to methods for producing mixtures comprising noble metal and phyllomineral, and compositions obtained from said methods.

The present invention relates to methods for producing mixtures comprising noble metal and phyllomineral, and compositions obtained from said methods.

The present invention provides a novel material using a meta-halloysite that does not exist prior art, and a production method therefor. The meta-halloysite powder of the present invention is characterized in that: the meta-halloysite is covered by elemental carbon; the meta-halloysite contains elemental carbon; the meta-halloysite powder is a powder containing granules formed by the aggregation of meta-halloysite comprising meta-halloysite nanotubes covered by elemental carbon; or the meta-halloysite powder is powder containing granules formed by the aggregation of meta-halloysite comprising meta-halloysite nanotubes, which are tubular meta-halloysite, wherein the meta-halloysite contains elemental carbon.

The present invention provides a novel material using a meta-halloysite that does not exist prior art, and a production method therefor. The meta-halloysite powder of the present invention is characterized in that: the meta-halloysite is covered by elemental carbon; the meta-halloysite contains elemental carbon; the meta-halloysite powder is a powder containing granules formed by the aggregation of meta-halloysite comprising meta-halloysite nanotubes covered by elemental carbon; or the meta-halloysite powder is powder containing granules formed by the aggregation of meta-halloysite comprising meta-halloysite nanotubes, which are tubular meta-halloysite, wherein the meta-halloysite contains elemental carbon.

A mechanical ball-milling method for preparing a polydopamine-modified montmorillonite nanomaterial is disclosed. The method includes dispersing a montmorillonite material in an aqueous solution, stirring, concentrating and collecting a concentrated montmorillonite solution for use; adding dopamine hydrochloride to a buffer solution to prepare a dopamine hydrochloride solution, with a concentration of 0.2-1 g/mL, and adjusting the pH value of the dopamine hydrochloride solution; and adding the dopamine hydrochloride solution and the concentrated montmorillonite solution simultaneously into a ball mill jar to form a mixture, and then subjecting the mixture to a ball milling for 0.3-6 hours, pouring the mixture out of the ball mill jar, and subjecting to a solid-liquid separation by a centrifugation, and then washing a solid product with deionized water for 3-6 times, and removing water from the solid product, to obtain the polydopamine-modified montmorillonite nanomaterial.

A mechanical ball-milling method for preparing a polydopamine-modified montmorillonite nanomaterial is disclosed. The method includes dispersing a montmorillonite material in an aqueous solution, stirring, concentrating and collecting a concentrated montmorillonite solution for use; adding dopamine hydrochloride to a buffer solution to prepare a dopamine hydrochloride solution, with a concentration of 0.2-1 g/mL, and adjusting the pH value of the dopamine hydrochloride solution; and adding the dopamine hydrochloride solution and the concentrated montmorillonite solution simultaneously into a ball mill jar to form a mixture, and then subjecting the mixture to a ball milling for 0.3-6 hours, pouring the mixture out of the ball mill jar, and subjecting to a solid-liquid separation by a centrifugation, and then washing a solid product with deionized water for 3-6 times, and removing water from the solid product, to obtain the polydopamine-modified montmorillonite nanomaterial.

According to the present disclosure, a method of forming an exfoliated or intercalated filler material is provided, wherein the said method comprises the steps of mixing particles of filler material such as montmorillonite (MMT), mica, layered double hydroxide (LDH), and attapulgite (AT) dispersed in an aqueous medium with cationic acrylate monomers to form modified particles comprising positively charged ions, dispersing the modified particles in organic medium to form a dispersion, contacting said dispersion with an organo-silicate such as tetraethyl orthosilicate (TEOS) and a functionalizing agent comprising an organo-silane such as aminopropyltrimethoxysilane (APTMS), in the presence of a basic catalyst to form a layer of silica on the modified particles. The present disclosure also relates to an exfoliated or intercalated filler material obtained by the said method as well as a method of forming a resin/clay nanocomposite.