201results about How to "Raw materials are cheap" patented technology

The process of preparing PDT copolyester fiber includes the following steps: 1. saccharifying and catalytically hydrogenating corn starch to prepare sorbitol, catalytically hydrogenating to prepare multicomponent mixed alcohol, and fractionating in a fractionating tower at 182-212 deg.c to obtain corn-base ethylene glycol product of 89-99 % content and with ethylene glycol as main component and other diols; 2. detecting the contents of component diols in the ethylene glycol product and adding insufficient components for content fluctuation controlled within 10-30 %; and 3. adding nanometer titania in 0.05-1 wt% into the corn-base ethylene glycol product, and copolymerizing together with terephthalic acid at 280-288 deg.c for 5-7 hr to prepare PDT copolyester. The process is suitable for industrial production.

Improved glass fibers compositions, typically useful for fire resistant blankets or containers to provide high burn-through resistance at high temperatures of 2,400° F. and higher, and typically comprising silica, sodium oxide, potassium oxide, calcium oxide, magnesium oxide, ferrous+ferric oxide, and titanium oxide; the improved glass compositions may further include alumina, lithium oxide, and boron oxide.

The invention discloses medicine for preventing and treating bovine rumen flatulence. The medicine is prepared from, by mass, 170-210 parts of rheum officinale, 50-80 parts of licorice roots, 190-220 parts of pericarpium citri reticulatae, 180-215 parts of endothelium corneum gigeriae galli, 180-210 parts of perilla stems, 80-110 parts of cassia twigs, 130-165 parts of salvia chinensis, 185-215 parts of cape jasmine, 105-135 parts of asarum, 210-245 parts of fructus aurantii, 105-140 parts of gleditsia officinalis, 135-160 parts of white paeony roots and 120-150 parts of Chinese fevervine herbs. No incompatibility between the raw materials in the medicine exists, and the medicine can obviously lower the occurrence rate of bovine rumen flatulence, has an excellent prevention and treatment effect on bovine rumen flatulence and is free of toxic and side effects and harmful medicine residues and safe to use.

The invention discloses a paper starch adhesive and a preparation method thereof. The paper starch adhesive comprises the following components in part by weight: 100 parts of starch, 300 to 600 parts of water, 0.1 to 0.3 part of potassium hydrogen peroxymonosulfate, 5 to 10 parts of caustic soda, 1 to 5 parts of epoxy chloropropane, 0.5 to 1.5 parts of boric acid, 1 to 3 parts of sodium sulfite, 4 to 8 parts of light calcium carbonate and 2.5 to 5 parts of bridging agent. The preparation method comprises the following steps of: adding water into a reaction kettle, heating the water to 38 DEG C, adding the starch into the water, stirring the solution, adding potassium hydrogen peroxymonosulfate solution into the reaction kettle, and reacting the mixed solution for 20 minutes with stirring; diluting the caustic soda, then slowly adding the caustic soda into the reaction kettle twice, stirring the solution for about 20 minutes to form milk white or light yellow transparent colloid, then adding the boric acid, the bridging agent and the light calcium carbonate into the colloid, and stirring the mixture uniformly; and adding the epoxy chloropropane, sodium aliphatate and the sodium sulfite into the reaction kettle with stirring, and stirring the mixture uniformly to obtain the paper starch adhesive. The adhesive has the characteristics of stable viscosity, good adhesiveness, low comprehensive cost, good permeability and the like.

The invention relates to a method for preparing folic acid functional nanofibers for target capture of cancer cells. The method comprises the following steps: (1) preparing a PVA/PEI nanofiber membrane by electrostatic spinning, and carrying out vacuum drying; (2) after drying, using glutaraldehyde for crosslinking; (3) activating carboxyl of folic acid FA through EDC.HCl and NHS, and reacting the carboxyl-activated FA with polyethylene glycol PEG with carboxyl at one end and amidogen at the other end to obtain FA-PEG-COOH; (4) activating carboxyl of FA-PEG-COOH, adding FA-PEG-COOH into the PVA/PEI nanofiber membrane, and carrying out shaking reaction to obtain the folic acid functional nanofibers; adding triethylamine and acetic anhydride for acetylation treatment, washing and drying. The prepared nanofibers have good biocompatibility and structural stability, is short in time to capture the cancer cells and strong in specificity, and has a wide application prospect.

The present invention provides a photocatalytic concrete material sprayed with titanium dioxide/activated zeolite composite material and preparation method thereof, and the photocatalytic concrete material sprayed with titanium dioxide/activated zeolite composite material comprises following raw materials in parts by weight titanium dioxide 0.1-20 parts, activated zeolite molecular sieve 0.1-20 parts, dispersant 0.1-5 parts, emulsifier 0.05-2 parts, coupling agent 0.05-2 parts, cement 40-90 parts, fine sand 40-90 parts and water. In the present invention, the activated zeolite molecular sieve can load titanium dioxide photocatalytic material as a carrier, and can easily adsorb gaseous pollutant of automobile exhaust with huge specific surface area (280.1 m²/g), thereby increasing photocatalytic degradation efficiency and the efficiency can reach 92%, besides, the present invention has advantages of simple preparation technology, cheap raw materials and low preparation cost, so the present invention is suitable for industrial production.

One Al-Ti-C intermediate alloy preparation method, involves a kind to use in the aluminum alloy production crystal grain thin Al-Ti-C intermediate alloy production method. Its characteristic lies in with the calcium carbide does carbon source, the production craft completely dissolves after the aluminum, melts the body fever to join the electricity stone powder hydrofluotitanic acid armor the mixture, elevates temperature to 950deg.C~~1000deg.C, guarantees the wet 10~~30 minute, after melt body surface liquid state dregs casting.The invention characteristic is the raw material unites is easy, alloy production craft simple, production cost low, produces the alloy thin medicinal preparation thin crystal grain with this craft is incubation period short, specially suits outside the stove is continuously thin.

The low concentration heavy metal removal method by sodium alginate embedding heat-activated activated sludge, which pertains to heavy metal waste water disposal method, comprises the following steppes: treating the activated sludge from municipal sewage plant with scouring, centrifugal separation and drying under pressurization to deactivate it; embedding it with sodium alginate(CaCl2) to get immobilization calcium alginate ball(CA); filling fixed reactor with CA in certain density; continuously treating low concentration waste water containing mixing heavy metal such as Cd2+, Pb2+, Cu2+ and Zn2+; and selectively washing CA ball by hydrochloric acid to get mixing heavy metal adsorbed on CA ball. Heavy metal is retained while sorbent material revived to reuse. The invention has the advantages of high efficiency and economical and practical property.

The invention discloses an application of a Bronsted acid ion liquid to preparation of diphenyl oxalate. Phenol and dimethyl oxalate are subjected to transesterification under the catalytic action of the Bronsted acid ion liquid, and the transesterification is carried out under a solvent-free condition, so that a mixture with diphenyl oxalate is obtained, wherein the reaction temperature ranges from 150 DEG C to 250 DEG C, the reaction time ranges from 2h to 5h, the mole ratio of phenol to diphenyl oxalate is (2.0-10.0):1, and the mole ratio of the Bronsted acid ion liquid as a catalyst to dimethyl oxalate as a substrate is 5-20%. By using the method, diphenyl oxalate (namely the mixture with diphenyl oxalate is obtained) can be greenly and safely prepared through the transesterification between phenol and dimethyl oxalate under mild reaction conditions and at high yield and low cost.

The invention relates to an active carbon loaded Ru-Co nanocatalyst and its application in a selective hydrogenation reaction of a benzaldehyde compound. The Ru-Co nanocatalyst is characterized in that a metallic ruthenium compound and a metallic cobalt compound undergo coprecipitation on an active carbon carrier and then reduction is carried out under a hydrogen atmosphere so as to obtain the Ru-Co nanocatalyst, wherein mass ratio of ruthenium to cobalt to active carbon in the prepared active carbon loaded Ru-Co nanocatalyst is 1: (10-100): (50-500). According to the selective benzaldehyde compound hydrogenation reaction catalyzed by the Ru-Co nanocatalyst, the benzaldehyde compound is converted to obtain corresponding benzyl alcohol. A preparation method of the catalyst is simple; raw materials are cheap and easily available; and the Ru-Co nanocatalyst is suitable for industrial production. In addition, the catalyst shows good activity and selectivity for the hydrogenation reaction of the benzaldehyde compound, and the catalyst is easy to recycle and reuse.

The invention discloses a Cr-doped near-infrared long-afterglow luminescent material with a perovskite structure. A substrate material of the luminescent material is ABO3, wherein A is Ca, Sr or Ba, B is Sn or Ti, and 0.001 to 5 mol% of Cr<3+> is doped in the substrate material. The invention further discloses a preparation method for the near-infrared long-afterglow luminescent material. The method comprises the following steps: (1) separately weighing a compound containing A, a compound containing Ti and a compound containing Cr; and (2) after grinding and uniform mixing of the above compounds, presintering the obtained mixture in the air/reductive atmosphere, then grinding the mixture again and carrying out sintering in the air/reductive atmosphere for a plurality of hours. The near-infrared long-afterglow luminescent material prepared in the invention has an emission band located at 650 to 850 nm, an emission peak at 760 nm and afterglow time of as long as 100 min. The preparation method is simple, uses cheap raw materials and can easily realize large-scale technical popularization.