105 results about "(3-Aminopropyl)triethoxysilane" patented technology

The invention relates to a catalyst used for preparing 1, 3-trimethylene glycol by hydrogenation of 3-hydroxypropanoic acid methyl ester; the catalyst consists of active components as follows: 40-70% of CuO, 20-50% of additive SiO2 and 1-10% of cocatalyst MnO2 according to weight percentage; the preparation method sequentially comprises the steps as follows: a) Cu salt, Mn salt and organosilane are mixed according to the molar percentage thereof in the catalyst and dissolved by alcohol-water solution; b) the prepared mixed solution of various salts is heated and mixed so as to form sol and gel; c) the gel is dried, roasted and formed; wherein, the organosilane containing alkoxy group is chosen from one or more out of Gama-aminopropyltriethoxysilane, Gama- Aminopropylmethyldiethoxysilane, Gama-aminopropyl trimethoxysilane or N-Beta- aminoethyl-Gama-3-aminopropyl triethoxysilane. The reaction pressure of the catalyst can achieve 3-6MPa, thus reducing the investment and production cost of the production device and reducing the operation difficulty.

The invention relates to a nanoparticle composite high-temperature guar gum fracturing fluid which comprises a base liquid and a crosslinking agent, wherein the mass ratio of the base liquid to the crosslinking agent is 100:(0.3-0.6); the base liquid comprises the following components in percentage by mass: 0.3-0.6% of a thickening agent, 0.02-0.06% of water-soluble nanoparticles, 0.3-0.5% of a clay stabilizing agent, 0.3-0.5% of a surfactant, 0.1-0.3% of a temperature stabilizing agent and the balance of water; the crosslinking agent is a triethanolamine boron complex; the thickening agent isany one of hydroxypropyl guar gum and carboxymethyl hydroxypropyl guar gum; the water-soluble nanoparticles are SiO2 or ZnO granules of which the particle sizes are 1-10 nm after surface modification; a surface modification method of the water-soluble nanoparticles comprises the following steps: putting 5-15 g of 3-aminopropyl triethoxysilane into 50 ml of an ethanol solution, further adding 4-8g of SiO2 or ZnO nanoparticles, enabling the components to react for 40 minutes, adding 0.01-0.03 g of lauryl sodium sulfate and 4-7 g of an acrylic monomer, and carrying out initialization with 0.01-0.03 g of ammonium persulfate. Due to adoption of the nanoparticles, the network structure of the fracturing fluid can be improved, the temperature resistance and the shearing resistance of the fracturing fluid can be improved, and wide market application prospects can be achieved.

The invention provides an environment-friendly low-cost metal surface treatment agent. The treatment agent is composed of the following raw materials, by weight, 10-20 parts of 3-aminopropyl triethoxysilane, 10-20 parts of dispersed nano-silica, 10-40 parts of hexafluorozirconic acid, 0-25 parts of hexafluorotitanic acid, 5-10 parts of oxalic acid, 8-15 parts of hydrogen peroxide, 887-950 parts of water and 2-5 parts of ammoniacal liquor. In comparison with traditional phosphatization, the invention has advantages of environmental protection property (no toxic heavy metal ion), low energy consumption (use at normal temperature), low use-cost (handling capacity per kilogram is 5-8 times higher than common phosphatization), no slag and the like.