31results about How to "Scattered tightly" patented technology

The invention provides a modified ethylene-methyl acrylate copolymer and its preparation method and application. The present invention obtains an ethylene-methyl acrylate copolymer by preparing a nickel complex catalyst, and utilizing the catalyst to efficiently catalyze the copolymerization process of ethylene and methyl acrylate; and by combining the ethylene-methyl acrylate copolymer and silicon dioxide The nanoparticles were reacted with vinyltrimethoxysilane and then blended and crosslinked to prepare the modified ethylene-methyl acrylate copolymer. Through the above method, the present invention can utilize the catalyst to regulate and control the structure and performance of the ethylene-methyl acrylate copolymer, so as to promote the modification process to be carried out efficiently, so that the obtained modified ethylene-methyl acrylate copolymer has a higher Melting point, excellent mechanical properties and corrosion resistance, can be applied to reverse osmosis membrane support materials, and has high practical application value.

The invention discloses a method for inhibiting migration of a plasticizer in an esterified starch film and an esterified starch film. The method comprises the following steps: (1) adding starch milk with a certain moisture content into a high-temperature high-pressure reaction kettle, controlling the pH of the system, adding acetic anhydride or propionic anhydride, stirring and reacting for 0.5-4.0 hours at a temperature of 80-100 DEG C, then, adding water to precipitate, filtering and drying to obtain esterified starch; (3) dissolving the esterified starch in acetone to prepare a 40% solution, adding a 20-30% plasticizer, spraying on a polytetrafluoroethylene plate though a fluidized bed at a temperature of 50-55 DEG C with a spraying rate of 1.0-2.8mL / min and atomizing pressure of 0.5-1.5MPa to form a semitransparent film, thereby obtaining the esterified starch film. The method disclosed by the invention can be used for reasonably controlling an aggregation state structure inside the esterified starch film, so that the good in effect in inhibiting the migration of the plasticizer is achieved, the operability is strong and the applied range is wide.

The invention discloses a texturing additive suitable for monocrystalline silicon wafers and its application. The texturing additive is composed of the following components in mass percent: 0.01-1 wt% of a main nucleating agent, 0.001-0.1 wt% of an auxiliary nucleating agent wt%, suede modifier 0.1~2wt%, defoaming agent 0.1~3wt%, the balance is deionized water. The texturizing additive of the invention reduces the consumption of inorganic alkali, and does not need to be washed with hydrogen peroxide after texturing, greatly reduces the consumption of chemicals, simplifies the technological process, and finally reduces the production cost of solar cells.

The present invention discloses a pyraclostrobin emulsion, comprising: pyraclostrobin oil phase solution and gluten hydrolysis suspension, wherein pyraclostrobin molecules are adsorbed around the gluten oligopeptide chain , pyraclostrobin molecules and gluten oligopeptide chains are cross-linked to form a network chain structure. The invention also discloses a method for preparing the pyraclostrobin emulsion. After the gluten is hydrolyzed, amino acids and polypeptides will be produced. Due to the electrostatic adsorption between the amino groups in amino acids and polypeptides and the ring structure in pyraclostrobin, pyraclostrobin molecules will be adsorbed on gluten oligopeptides around the chain, and pyraclostrobin molecules and gluten oligopeptide chains are cross-linked to form a network chain structure, so that the drug is evenly dispersed and combined more tightly, which can prolong the duration of action and improve the effectiveness of pyraclostrobin. utilization rate.

The invention discloses a production process for preparing an organic-inorganic composite water-retaining agent. a. After mixing sodium hydroxide and deionized water, add it to acrylic acid under the condition of ice-water bath to obtain product A; b. Mix titanium dioxide dispersion liquid with deionized water to obtain product B; c. Mix product A, After mixing product B and acrylamide, pour it into a quartz tube, and irradiate it with ultraviolet light under a nitrogen atmosphere to obtain a photopolymerization product, which is product C; d. Mix N,N-methylenebisacrylamide, ammonium persulfate and Mix with deionized water to obtain product D; e, under nitrogen atmosphere, mix and heat product C and product D to obtain product e; f, soak product e with alcohol and dry to obtain the finished product. The invention solves the problems of loose organic-inorganic interface of the water-retaining agent and difficult degradation after repeated use, prevents the water-retaining agent from becoming the next "white pollution", and improves the tightness of the organic-inorganic interface of the water-retaining agent and realizes repeated use. Significant in terms of degradation.

The present invention discloses a boscalid emulsion, comprising: boscalid oil phase solution and gluten hydrolyzed suspension, wherein, boscalid molecules are adsorbed around the gluten oligopeptide chain, and boscalid Bacteramine molecules and gluten oligopeptide chains are cross-linked to form a network chain structure. The invention also discloses a method for preparing the boscalid emulsion. Wheat gluten will produce amino acids and polypeptides after hydrolysis. Due to the electrostatic adsorption between the amino groups in amino acids and polypeptides and the ring structure in boscalid, boscalid molecules will be adsorbed around the gluten oligopeptide chain , and boscalid molecules and gluten oligopeptide chains are cross-linked to form a network chain structure, which makes the drug evenly dispersed and combined more closely, which can prolong the duration of action and improve the effective utilization rate of boscalid.