106 results about "Chrysotile" patented technology

Chrysotile or chrysotile-containing serpentinite containing chrysotile is treated to convert the chrysotile contained therein into a non-asbestos material, so that the non-asbestos material is used as a material that can be recycled safely and is effective from the view point of environmental protection.[Means for Solving Problems] A curable composition characterized by containing at least a porous fibrous amorphous silica obtained by decomposing chrysotile or chrysotile-containing serpentinite with acid to substantially eliminate an influence of asbestos on living body, and a reinforcing fiber. The curable composition preferably contains a surfactant and a thickener and / or a filler and / or a colorant or an air-hardening material and / or water-hardening material and a thickener. The composition preferably contains 15 to 100% of the porous fibrous amorphous silica obtained by decomposing the chrysotile or the chrysotile-serpentinite with acid, 0 to 75% of a slaked line, 0 to 3% of a thickener, and 0 to 10% of a pulp.

The invention discloses an oxide / silicate mineral fiber nano composite air-sensitive film and a preparation method thereof, belonging to the technical field of functional composite material. The oxide / silicate mineral fiber nano composite air-sensitive film comprises silicate mineral fiber nano material substrate and a nano oxide powder layer coated on the surface of the silicate mineral fiber nano material substrate; wherein silicate mineral fiber nano material is any one in the minerals such as chrysotile, amphibole, meerschaum and palygorskite; and nano oxide powder is any one of nano stannic oxide, nano ferric oxide, nano zinc oxide and nano copper oxide. Compared with the prior art, the oxide / silicate mineral fiber nano composite air-sensitive film obtained by adopting the method has the tensile strength being improved from 10-50MPa to 100-3000MPa and the fracture toughness be enhanced from 3-5MPa.m1 / 2 to 100-500MPa.m1 / 2; the air-sensitive stability and the service life are improved by 80-100%.

The invention discloses an industrial sewage treatment agent, which comprises the following raw materials by weight: 20-40 parts of chrysotile, 10-30 parts of diatomite, 10-30 parts of modified activated carbon, 10-20 parts of polymeric aluminum phosphate, 5-15 parts of polymeric phosphate-ferric chloried, 1-5 parts of aluminum potassium sulfate, 5-10 parts of bentonite, 1.5-2.5 parts of polyacrylamide, 1.4-2.5 parts of sodium hexametaphosphate, 1-3 parts of modified attapulgite, 10-30 parts of isopropanol, 5-15 parts of sodium nitrite, 2-10 parts of thiourea, and 2-4 parts of acrolein. The industrial sewage treatment agent provided by the invention can be used for industrial sewage treatment, and has the advantages of fast flocculation and purification speed, thorough sewage treatment, excellent stability and high safety.

The invention discloses a method for preparing a magnetic chrysotile nanotube. The method comprises the following steps: adding amorphous silica, a magnesium compound, a bivalent iron salt and water into a reaction kettle under the protection of nitrogen, and uniformly mixing the ingredients to obtain a mixed solution, wherein the mass concentration of the amorphous silica in the mixed solution is 2-25%, the mass concentration of the magnesium compound is 1-20%, and the mass concentration of the bivalent iron salt is 0.2-15%; adding a sodium hydroxide solution into the mixed solution to regulate the pH value to 10-13.5, and then, transferring the solution into a high-pressure reaction kettle, reacting for 12-72 h at 180-240 DEG C under a sealed condition, filtering, washing and drying the product after the reaction to obtain the magnetic chrysotile nanotube. The magnetic chrysotile nanotube prepared by the method has strong magnetism, and the specific magnetism of the magnetic chrysotile nanotube is 12.78 A.M2.kg<-1>.

The invention relates to a preparation method for a porous silicon nanofiber / carbon composite material, and belongs to the technical field of lithium ion battery. The preparation method comprises the steps: firstly, carrying out acid dipping, water washing, filtration and drying on chrysotile asbestos to obtain a silica nanofiber having alkali metal oxide impurities removed; adding a reductive metal into the silica nanofiber, mixing evenly, then carrying out a reduction reaction to obtain a reduzate, carrying out pickling, water washing and drying on the reduzate to obtain a porous silicon nanofiber; and evenly mixing the obtained porous silicon nanofiber with a carbon precursor to obtain a mixed material, then dissolving the mixed material in a solvent, dispersing to obtain a mixed solution under an ultrasonic condition, and carrying out pyrolysis carbonization or hydrothermal carbonization of the dispersed mixed solution under the inert gas protection to obtain the porous silicon nanofiber / carbon composite material. The method takes natural minerals as raw materials, is low in cost and simple; and the porous silicon nanofiber / carbon composite material has the characteristics of large capacity density, high first-time Kulun efficiency, stable cyclic performance and the like.

The invention discloses a method for preparing water glass through extracting silicon oxide from chrysotile tailings by a strong-base roasting method. The method comprises the following steps: (1) carrying out processing, so as to obtain chrysotile tailing powder; (2) adding a strong base into the chrysotile tailing powder, carrying out uniform mixing, and carrying out a roasting reaction, so as to obtain a water glass containing active roasted product, wherein the strong base is sodium hydroxide or potassium hydroxide, and the chrysotile tailing powder and the strong base are weighed in a mole ratio of SiO2 to (Na / K) being (1: 0.5) to (1: 6); (3) proportioning the active roasted product and industrial water in a solid-liquid mass ration of being (1: 5) to (1: 30), and carrying out a water soaking reaction for 20 minutes to 2 hours, so as to obtain a water glass containing suspension; (4) subjecting the suspension obtained in the step (3) to filtrating and dehydrating, so as to obtain a water glass filtrate and filtrated residue; (5) subjecting the water glass filtrate to spray drying, thereby obtaining the water glass. According to the method, the strong base serves as a chemical adjuvant and reacts with silicon oxide in the chrysotile tailings, and then, leaching is carried out so as to prepare the water glass, thus, the process flow and roasting time are short, the energy consumption is low, and the method is green and environmentally friendly and is beneficial to popularization and application.

The invention discloses a scratch-resistant modified metal flashing coating for a photo frame. The scratch-resistant modified metal flashing coating is prepared from 25-35 parts by weight of amino methyl ester-modified polymethacrylate, 5-15 parts by weight of modified cellulose acetate butyrate, 2-8 parts by weight of hydroxy acrylic resin, 3-9 parts by weight of an isocyanate curing agent, 1-5 parts by weight of organosilicone resin, 3-6 parts by weight of epoxy resin E-13, 2-5 parts by weight of aluminum powder, 1-4 parts by weight of nanometer silicon dioxide, 2-8 parts by weight of nanometer titanium dioxide, 3-6 parts by weight of chrysotile, 1-8 parts by weight of ceramic powder, 1-3 parts by weight of ethylene glycol monobutyl ether, 2-6 parts by weight of hexakis(methoxymethyl)melamine, 1-4 parts by weight of dimethyl ethanolamine, 2-4 parts by weight of isopropanol, 3-5 parts by weight of sodium hexametaphosphate, 1-4 parts by weight of butyl acetate, 2-5 parts by weight of a silane coupling agent KH-560, 3-6 parts by weight of a dispersant, 2-4 parts by weight of a levelling agent BYK-331, 1-4 parts by weight of a wetting agent, 3-6 parts by weight of an antifoaming agent, 1-4 parts by weight of xylene and 12-18 parts by weight of deionized water. The scratch-resistant modified metal flashing coating has excellent scratch resistance.

A chrysotile nanofiber and resin composite transparent film, and a preparation method and application thereof. The film includes a layer of chrysotile nanofiber layer with pores; the nanofiber layer is wrapped between an upper resin layer and a lower resin layer; and the resin is infiltrated into the pores of the fiber layer. The content of chrysotile nanofiber is 20wt%-75wt%, and the thickness of the transparent composite film is 70-150 mum. The method is as below: adding chrysotile nanofiber into water, adding a polymer binder, and forming a uniform colloidal solution through mechanical stirring and ultrasonic; filtering the colloidal solution with a microfiltration membrane, and drying the obtained filter membrane to form a white chrysotile nanofiber film; and impregnating the chrysotile nanofiber film in vacuum in a UV curing resin, taking out the film, leveling and forming, curing with the UV to obtain the chrysotile nanofiber and resin composite film. The composite transparent film can be applied to substrate materials of organic electroluminescent devices.

The invention relates to sump oil filter aid composition, which is characterized by being composed of the following raw materials by weight part: 0.1 part to 10 parts of kieselguhr, 0.1 part to 10 parts of activated clay, 0.01 part to 0.05 part of graphite powder and 100 parts to 120 parts of sump oil filter aid composition filter sump oil. The sump oil filter aid composition further comprises the following raw materials by weight part: 0.1 part to 1 part of peralite, 0.1 part to 1 part of lignin fiber and 0.1 part to 1 part of chrysotile. The sump oil filter aid composition also comprises the following raw materials by weight part: 0.1 part to 1 part of magnesium oxide, 0.1 part to 3 parts of gypsum and 0.1 part to 1 part of active carbon. The sump oil filter aid composition has the advantages of being low in manufacture cost, convenient to use, quick in filter speed, clean in purification, good in quality of purified oil, convenient to deslagging and the like and has popularization value.