44results about How to "Not hydrolyzed" patented technology

The invention relates to a formula of soles of PU-simulated foaming sneakers through injection, which comprises the following raw materials in percentage by mass: 40 percent of 21 percent ethylene-vinyl acetate copolymer (EVA 7360), 16.7 percent of styrene butadiene copolymer SBBSJT-83, 12.5 percent of ethylene octylene copolymer POE8130, 8.3 percent of ethylene-propylene-diene copolymer 3745P, 65.9 percent of wear-resisting agent A-18, 8.3 percent of talcpowder, 0.25 percent of stearic acid, 0.42 percent of zinc stearate, 0.9 percent of zinc oxide, 0.08 percent of bridging auxiliary agent ET-102, 0.75 percent of bridging agent DCP, 1.7 percent of high-temperature foaming agent AC-6000H, 2.5 percent of titanium white powder R-103 and 1.7 percent of master batch. The preparation method comprises the steps of banburying, mixing, granulation, injection molding, physical property tests and the like. Thus, in the research and development and application, the PU-simulated foaming soles not only have the physical and chemical properties of no crease marks, high elasticity, low compression and wear resistance of PU soles, and but also have the advantages of low production cost, light specific gravity, good limited-slip properties, no hydrolysis and long service life.

The invention discloses a method for extracting chitin from shrimp and crab shells. The method comprises the following steps: raw material treatment, ultrasonic treatment, high-pressure treatment, acid treatment, and drying to obtain the product. Compared with the existing acid and alkali treatment, microbiological treatment and the like, the method has the advantages that the time is greatly shortened, and the obtained chitin is high in yield and high in content.

The invention relates to a high hardness and oil resistance silicon resin component with amide base and a preparation method thereof. The high hardness and oil resistance silicon resin component comprises at least one of diamide alkane double-alkoxy silicane shown as a formula I, or a hydrolyzing condensation preformed polymer of the diamide alkane double-alkoxy silicane, or a composition of the diamide alkane double-alkoxy silicane and the hydrolyzing condensation preformed polymer, and the preformed polymer is provided with the characteristics of oil resistance, medium resistance, rigidity and high hardness. After stabilization of the high hardness and medium resistance silicon resin component, a hardness of a pencil can reach 8H. The silicon resin component can be used as paint, adhesive, resin base material of thermosetting molding resin or composite materials and the like.

The invention relates to a sizing agent in the paper making field, in particular to a self-emulsifying alkenyl succinic anhydride sizing agent and a preparation method thereof; the self-emulsification alkenyl succinic anhydride sizing agent comprises nanometer titanium dioxide and alkenyl succinic anhydride. The nanometer titanium dioxide is hydrophilic, the particle diameter is smaller than 100 nm and the water content is smaller than 1%. The weight ratio of the nanometer titanium dioxide to the alkenyl succinic anhydride is 1:(20-1000). The preparation method comprises the step of adding the nanometer titanium dioxide into the alkenyl succinic anhydride under a stirring condition, wherein stirring speed preferably is 50-1000 r / m and stirring time is 1-30 min. The invention has the advantages that the preparation method is simple, fewer stabilizing agents are consumed and no any surfactants are added; and the prepared alkenyl succinic anhydride sizing agent nearly has no water, therefore no hydrolysis is generated, the transportation and storage are convenient, the onsite emulsifying and internal sizing are convenient, and the sizing efficiency is high.

The invention provides a digestion method and a detection method of iron ore. The digestion method comprises the following steps of: performing closed-vessel microwave-assisted digestion on iron ore samples mixed with hydrofluoric acid and sulfuric acid to form suspension; and heating the suspension in an opened system to perform digestion for the second time by using the residual sulfuric acid so as to obtain completely digested solution. The detection method comprises the step of detecting solution to be tested, which is prepared from the digested solution by a detection method such as inductive coupled plasma atomic emission spectroscopy so as to obtain the content of each element of the iron ore. The digestion method and the detection method have the characteristics of high efficiency, simpleness, quickness and accuracy; and particularly, the key elements, such as As, Pb, Zn, W, Sn, Ca, Mg, Cu, Co, Ni, Cr, Mo and the like, of the iron ore can be detected accurately, wherein the key elements can influence the quality of products prepared by the processes such as iron and steel smelting, vanadium extraction, titanium extraction and the like.

This invention relates to a kind of processing solution for copper black oxidation. It discloses the water-soluble reducer in the processing solution is tertiary-butyl alkyl borane, trimethyl alkyl borane, ethanol hydrazine or the combination of above compounds. This invention has many water-soluble reducer selections, can reduce the aerugo to copper effectively. The reducer is cheap and will not be hydrolysis. The reduced by-product is water-soluble, will not generate grain on the inner copper. It is good for the adherence of copper and semi-solidified piece.

The invention discloses a directional conversion system for organosilicon high-boiling mixed liquid, which comprises a directional oxidation conversion device, a high-temperature oxidation chamber, an oxygen-supplementing air heat exchanger, a high-temperature too-cotton catcher, a waste heat recovery device, and a quenching hydrochloric acid absorption tower arranged in sequence , Hydrogen chloride absorption tower first / secondary, chlorine oxidation tower, alkali washing tower, smoke exhaust fan, activated carbon filter, exhaust pipe. The invention adopts directional oxidation conversion device, high-temperature oxidation chamber, oxygen-supplementing air heat exchanger, high-temperature too-cotton trap, waste heat recovery device, quenching hydrochloric acid absorption tower, hydrogen chloride absorption tower first / secondary, chlorine oxidation tower, alkali washing tower, etc. Gradually carry out directional transformation and treatment of organosilicon high-boiling mixed liquid. The separated silica, hydrochloric acid and other products are all qualified industrial products and can be used industrially. All are advanced, reliable, economical and reasonable, can effectively reduce operating costs, and realize material recycling and energy recovery.

The invention relates to a measurement method of total saponins in health food, and particularly relates to a measurement method of total saponins in health food using propolis as a raw material. The measurement method provided by the invention comprises a standard curve making process, a sample treatment process, a test liquid column chromatography isolation process, a color developing process and a total saponins calculating process. In the standard curve making process, a standard curve is obtained by using an absorbance value and a mass of ginsenoside as curves; in the sample treatment process, liquid to be tested is obtained by taking 0.3g of the health food using the propolis as the raw material; in the test liquid column chromatography isolation process, column chromatography isolation is carried out on the liquid to be tested by using a chromatographic column, so as to obtain an evaporation pan with the liquid to be tested which is evaporated to be dry; in the color developing process, the absorbance value of the liquid to be tested is obtained; and in the total saponins calculating process, the content of the total saponins in the health food using the propolis as the raw material can be obtained. The measurement method provided by the invention has the advantages of simple extraction method, high recovery rate, good accuracy, simplicity, convenience and rapidness.

The invention provides a digestion method and a detection method for a vanadium-nitrogen-titanium-iron mixed alloy cored wire. The digestion method comprises the following steps: putting a cored wire into a container, adding a concentrated nitric acid and a concentrated hydrochloric acid to the container; carrying out first time of pre-reaction under an open state; adding a concentrated sulfuric acid and carrying out second time of pre-treatment under the open state; carrying out digestion and complexation reaction by microwave in a closed state, so as to obtain a solution. The detection method comprises the following steps: cooling the solution, diluting and fixing volume to obtain a sample solution; determining the content of elementary compositions in one or more sample solutions by using inductively coupled plasma atomic emission spectrometry, flame atomic absorption spectrometry, titration, spectrophotometry and an electrochemical process. The digestion method and the detection method have the advantages of being safe to operate, simple and rapid, efficient and complete, fewer in man-made factors, and easy to accurately control and repeatedly reappear, and technical indexes such as the accuracy, the precision and the like of an analysis result are improved.

The invention discloses a polyurethane synthetic leather resistant to hydrolysis and corrosion, which is obtained by infiltrating a modified polyurethane emulsion into a non-woven fabric through a wet manufacturing process. The hydrosilylation reaction has obtained the silanol compound of the formula A structure, followed by block copolymerization of isophorone diisocyanate, polypropylene glycol and silanol compound A to obtain the prepolymer of the formula B structure, in the chain extender DMPA Condensate C was obtained by further polymerization under the action of condensate C. The low surface energy silicone was embedded in the synthesis of polyurethane, and then the carboxylated carbon nanotubes were introduced into the carboxylated carbon nanotubes in the form of hydrogen bonds to form a superhydrophobic protective layer, which greatly improved It improves the hydrolytic corrosion resistance of polyurethane synthetic leather and has a good application prospect.