31results about How to "Chemically reactive" patented technology

The invention belongs to the technical field of graphene materials and in particular relates to micro-oxidized graphene and a preparation method thereof. The micro-oxidized graphene contains a small amount of active groups, is low in degree of oxidation, and has the oxygen element content of 1-10wt% and the bulk density of 0.01-0.1g/ml. The micro-oxidized graphene contains a proper amount of chemical reaction active group points, and meanwhile, a relatively complete graphene lattice structure is remained so that the micro-oxidized graphene has excellent dispersibility, special reactivity and excellent physical properties. The invention provides an industrial micro-oxidized graphene preparation route which is efficient, stable, economical, controllable and environment-friendly and the defects of uncontrollable graphene activation, great operation risks, serious environmental pollution, serious equipment corrosion, high cost investment and the like of a traditional acid oxidation method can be overcome. The micro-oxidized graphene prepared by use of the preparation method has extremely wide prospect in the fields of functional composites, coatings, ink, photoelectric materials, biological medicine and the like.

The invention discloses a PAA-TEOS-OA combined treatment-based finishing method for a polyester or polyamide hydrophobic fabric, and belongs to the technical field of functional textiles. A fabric is subjected to pretreatment by utilizing polyacrylic acid, so that the capability of the fabric in the aspect of reacting with a subsequent chemical reagent is improved, and a bridge function is achieved; tetraethyl orthosilicate is hydrolyzed and polycondensed under an acid or alkali condition, and particular matters are formed on the surface of the fabric, so that a function of roughening the fabric is achieved; long-chain alkane type octadecylamine can effectively reduce surface energy of the fabric, and meanwhile, the environment problem caused by perfluoronic compounds is avoided; in the finishing treatment, traditional soaking, rolling, baking and roasting processes are utilized, so that the homogeneity and the repeatability of products are good, and the cost is low; the polyacrylic acid, the tetraethyl orthosilicate and the octadecylamine, which are utilized in the whole finishing process, need to be utilized under weak acid and weak alkali conditions, and the baking temperature is low, so that the damage to the fabric is small; the finishing method can be applied to finishing a hydrophobic function of the polyester or polyamide fabric.

The invention discloses a hyperbranched polyether modified polysiloxane defoamer containing nanosilicon dioxide. The hyperbranched polyether modified polysiloxane defoamer is prepared from, by weight, 25-40 parts of polysiloxane, 13-23 parts of hyperbranched polyether, 16-26 parts of allyl glycidyl ether, 38-58 parts of epoxypropane, 0.3-0.5 part of double metal cyanide, 50-70 parts of isopropanol, 0.2-0.5 part of a chloroplatinic acid catalyst, 2-6 parts of ultra-fine aluminum silicate, 1-2 parts of sorbitol, 1-2 parts of tween-60, 2-4 parts of sodium carboxymethylcellulose, an appropriate amount of deionized water, 4-11 parts of nanosilicon dioxide powder and 45-60 parts of dodecyl alcohol. The hyperbranched polyether containing a large number of hydroxyls at the tail end is adopted as a raw material, end-allyl hyperbranched polyether is prepared, a modified polyether end group double-bond structure and polysiloxane are adopted for performing a hydrosilylation reaction, the hyperbranched polyether modified polysiloxane is synthesized, and the defoamer prepared through the hyperbranched polyether modified polysiloxane has the excellent anti-shearing performance.

The invention discloses preparation methods for diisocyanate-modified montmorillonite and modified asphalt by employing diisocyanate-modified montmorillonite. The modified montmorillonite is obtained by performing chemical reaction on a diisocyanate possessing isocyanate group (-NCO) and montmorillonite containing hydroxyl (-OH) for expanding the interlamellar spacing of montmorillonite and grafting montmorillonite with active -NCO. According to the preparation method for the modified asphalt material by employing the above modified montmorillonite. The modified montmorillonite is reacted with polar molecules in asphalt, the interlamellar spacing is further expanded and peeling happens, a peeled layer and asphalt form a chemical bond, and thus modified montmorillonite is stably dispersed in the asphalt system, and the modified asphalt material possesses superior high-temperature stability, heat storage stability and ageing resistance. Through the chemical reaction of modified montmorillonite and asphalt, the chemical composition of asphalt is improved, and the comprehensive performances are improved. The prepared modified asphalt material is applicable to fields such as laying of high-grade roads of bridges, highways and airports, and building surface water prevention and the like.

The invention belongs to the technical field of soil remediation, and provides a contaminated soil-based soil conditioner which comprises the following components in parts by weight: 50-100 parts of plant ash, 50-100 parts of quick lime, 30-80 parts of an organic fertilizer, 40-70 parts of a calcium magnesium phosphate fertilizer, 20-60 parts of zeolite, 5-10 parts of a compound microbial agent, 0.5-1 part of biomass charcoal and 1-2 parts of urea. The contaminated soil-based soil conditioner integrates plant ash, quick lime, organic fertilizer, calcium magnesium phosphate, zeolite fertilizer,composite microbial agent, biomass charcoal and urea, not only is simple in material obtaining and low in cost, but also is good in remediation effect on heavy metal contaminated soil and quick in effect taking, and meanwhile, the soil fertility is improved.

The invention relates to a zeolite diatom ooze coating. According to the technical scheme, the zeolite diatom ooze coating mainly comprises the following components in percentage by mass: 15-35% of zeolite powder, 10-30% of diatomite, 10-20% of sea-foam stone powder, 10-25% of titanium dioxide, 5-20% of dolomite dust, 3-10% of white carbon black, 3-10% of kaolin, 3-8% of ash calcium powder, 0.3-1% of cellulose ether, and 0-10% of dispersible latex powder. The zeolite diatom ooze coating is prepared by combining zeolite and sepiolite with diatomite and adding a plurality of auxiliaries through a scientific formula, wherein zeolite with most molecular sieve representativeness and ion exchange, adsorption and dispersion, catalysis, chemical reaction and reversible dehydration properties is used as a main raw material, sepiolite with maximum specific surface area as a non-metallic mineral, unique content porous structure and the known strongest adsorption capability is used as an auxiliary raw material, and the technical effects of greatly improving the adsorption performance and ion exchange performance, increasing the removal of harmful substances such as formaldehyde, benzene, ammonia and the like, purifying air and eliminating peculiar smell are achieved.

This is a preparation of polytert-butyl methacrylic (PBMA) macromolecule monomer through atom transfer free radical polymerization (ATRP), belonging to macromolecule monomer preparation technology field. The invention provides the PBMA macromolecule monomer, including the styrene end-sealed one and crylic acid or methacrylic acid (MAA) end-sealed one. This kind of macromolecule monomer has the physical property and chemical reactive property, so it is very suitable for the structure design of macromolecule, and is widely used in the preparation of stem grafting macromolecule, segment embedded macromolecule and nanometer macromolecule grain material system. ATRP is a kind of active/controllable free radical polymerization., which has wide suitable monomers, simple operation, mild reaction condition, and can obtain high polymers of accurate structure and equably distributed molecular weights(Mw/Mn < 1.20). Applying the ATRP method can synthesize macromolecule monomers of uniformly distributed molecular weight.

The invention discloses a Kevlar nanofiber based high-strength heat conducting film preparation method. The method is characterized by including that urea functionalized boron nitride nanosheets and functionalized Kevlar nanofibers are adopted as a film assembly, a boron nitride nanosheet/functionalized Kevlar nanofiber composite thin film is obtained through vacuum suction filtration self-assembly, and then a boron nitride nanosheet/functionalized Kevlar nanofiber composite film namely a Kevlar nanofiber based heat conducting film is obtained through glutaraldehyde crosslinking for improvement of heat conducting and mechanical performances. By adoption of the functionalized boron nitride nanosheets and the surface modified Kevlar nanofibers as the assembly, a chemical crosslinking structure of the boron nitride nanosheets and the Kevlar nanofibers is realized through glutaraldehyde crosslinking, and accordingly tensile strength of the composite film is remarkably improved while the composite film is endowed with the excellent heat conducting performance. The method is simple and effective, and the high-strength heat conducting film prepared according to the method can be hopefullyapplied to fields of energy sources, electronics and the like.

The present invention relates to colored organopolysiloxanes containing units of the general formula (I) in which R, R, R, A, a, b, c and d are each defined as specified in claim 1, to processes for their preparation and to their use.

The present disclosure relates to a catalytic conversion process capable of reducing yields of a dry gas and coke. The method comprises the following steps: performing a first catalytic reaction on aheavy hydrocarbon oil raw material in a first reactor to obtain a first coked catalyst and a first product; performing a second catalytic reaction on a light hydrocarbon in a second reactor to obtaina second coked catalyst and a second product; introducing the first coked catalyst and the second coked catalyst into strippers, performing stripping, introducing a first stripped catalyst into an oxygen-containing fluidization zone of a regenerator, and performing aerobic regeneration; and introducing a second stripped catalyst into an anaerobic fluidization zone of a regenerator, and performinganaerobic regeneration at 600-800 DEG C. Compared with the prior art, the method disclosed in the invention can prepare more low-carbon olefins in catalytic conversion of heavy hydrocarbon oil, and the yields of the dry gas and the coke are lower.

The invention provides an alkali inhibitor for inhibiting saltpetering of red mud and a preparation method thereof, and belongs to the technical field of red mud, the alkali inhibitor comprises the following raw materials by weight: 1-6 parts of a catalyst, 2-9 parts of a water reducer, 11-18 parts of sodium chloride, 7-15 parts of potassium chloride, 5-9 parts of magnesium chloride, 1-5 parts of citric acid, 15-26 parts of calcium chloride, 2-7 parts of boric acid, 1-3 parts of an antifoaming agent, and 10-19 parts of zeolite particles. The alkali inhibitor for saltpetering of red mud is mixed in red mud, and the alkali inhibitor can react with alkaline substances in red soil so that the overall alkalinity of the red soil is reduced, and the influence of too high alkalinity in the soil on later use and surrounding environment is prevented.

The invention relates to the technical field of biomedical materials, in particular to porous composite bone cement and a preparation method thereof. The porous composite bone cement is mainly composed of a powder part and a liquid part, the ratio of the powder part to the liquid part is 2: 1 g/mL. The powder part is mainly composed of the following raw materials in percentage by mass: 29.5-84% of a methacrylic acid polymer, 10-40% of a degradable biological material, 5-30% of barium sulfate and 0.01-0.5% of benzoyl peroxide; the liquid is mainly prepared from the following raw materials in percentage by mass: 93-99.45% of methyl methacrylate, 0.5-5% of N, N-dimethyl p-toluidine and 0.05-2% of hydroquinone. The problems that the interface bonding force between traditional bone cement and autologous bone is low, bone cells cannot grow into the bone cement, and the mechanical property and biocompatibility of the bone cement are affected by reactants left in a pore-foaming agent after the existing porous bone cement is cured are solved.