316 results about "3-glycidoxypropyltrimethoxysilane" patented technology

The invention relates to organic-inorganic hybrid ultraviolet cured paint for metal surface protection. The paint comprises the following components in percentage by weight: 10 to 25 percent of epoxy modified silicon dioxide gel-resin, 15 to 30 percent of bisphenol-A epoxy acrylic ester, 5 to 15 percent of urethane acrylate, 35 to 45 percent of reactive diluent, 2 to 5 percent of toughener, 4 to 6 percent of photoinitiator, 0.5 to 0 percent of addition agent, wherein the epoxy modified silicon dioxide gel-resin is prepared by hydrolyzing a mixture of ethyl orthosilicate and gamma-glycidoxy propyl trimethoxy silane by a sol-gel method first and then adding diethylenetriamine. The paint film formed after the curing of paint has good strength, hardness, flexibility and strong acid and base resistance. The invention solves the problems that the organic-inorganic hybrid paint has high requirement on curing and common ultraviolet cured paint has poor adhesive force and flexibility when cured on metal base materials.

Disclosed is a method for preparation of molecular sieve modified by SBA- 15 surface sulfuric acid group, which contains the step: with polymer of the polyethylene glycol- polyglycerol- polyethylene glycol as the template agent, 3-mercaptopropyl-trimethoxysilane condensing ethyl orthosilicate in a acid condition, and by the oxidization of hydroperoxide, the molecular sieve modified by propanesulfonic acid being synthesized. The method for preparation is simple, the operation is easy, and the reaction condition is mild; the acid containing and the structure of the molecular can be regulated and controlled by regulating the matching of materials and processing parameter, the acid quantity being among 0.48- 1.15mmolH+/ g, specific surface being among 445- 680m2/ g, and the pore diameter being among 5.47- 7.58nm.

The invention discloses a temperature-sensitive magnetic sulfadimidine molecular imprinted adsorbent as well as a preparation method and application thereof, belonging to the technical field of preparation of environment functional materials. A gamma-Fe2O3/SiO2 magnetic composite material is prepared by using a sol-gel method and is subjected to vinyl modification by using 3-(methylacryloyloxy) trimethoxypropylsilane; with a vinyl-modified magnetic composite material (MPS (Modified Polystyrene)-gamma-Fe2O3/SiO2) as a substrate material, sulfadimidine as a template molecule, acrylamide as a functional monomer, N-isopropylacrylamide as a temperature-sensitive monomer, ethylene glycol-bis(methylacrylic acid) ester as a cross-linking agent and 2,2'-azobisisobutyronitrile as an initiator, a temperature-sensitive magnetic molecular imprinted polymer is prepared by using a free group polymerization process and is applied to selective recognition and separation of the sulfadimidine in an aqueous solution; and the obtained polymer has the advantages of remarkable heat and magnet stability, sensitive magnet and heat inducting effect, higher adsorption capacity, reversible adsorption/release function along with the temperature and remarkable recognition performance of a sulfadimidine molecule.

The invention belongs to the field of preparation of metal-skeleton organic matters and discloses a small and medium dual-hole HKUST-1 material and a preparation method and application thereof. The method comprises the following steps: respectively dissolving Cu(NO3)2.3H2O and H3BTC into a mixed solution of DMF, ethyl alcohol and water; stirring to obtain a clear solution A and a clear solution B; adding the clear solution A to the clear solution B and mixing evenly; adding 3-aminopropyltrimethoxysilane and stirring; transferring the obtained mixed solution to a stainless steel high-pressure reaction kettle, and carrying out temperature programming; cooling the reaction kettle to room temperature, filtering the product, and drying the product in vacuum; and washing the obtained product with ethyl alcohol for four times, thus obtaining the small and medium dual-hole HKUST-1 material. The product has a single mesoporous and microporous crystal structure, the mass transfer resistance is overcome in reaction, the mass transfer efficiency is improved, and particularly, the product has a relatively good application prospect in the fields of catalysis, adsorption, separation and the like involving macromolecules.

The invention discloses a droplet microfluidic technology based method for preparing chromatographic packing with the uniform and controllable grain size, and relates to preparation of the chromatographic packing. Tetramethoxysilane, 3-glycidoxypropyltrimethoxysilane and polyethylene glycol are added into an acetic acid solution and hydrolyzed into a hydrolysate under an ice-water bath, and a water-soluble basic amino acid is added and subjected to ultrasound until complete dissolution to be used as a disperse phase; an oil-soluble surfactant is dissolved into oil to be used as a continuous phase; the disperse phase is introduced into a horizontal channel of a microfluidic chip, the continuous phase is introduced into a vertical channel of the microfluidic chip, and the ratio of flow velocities of the disperse phase and the continuous phase is adjusted at the interface of the horizontal channel and the vertical channel to produce droplets with different grain sizes; the droplets have a condensation reaction at the temperature of 30-50 DEG C for 10-14 h and have an epoxide ring-opening reaction at the temperature of 60-80 DEG C for 10-14 h respectively, then isopropanol and methyl alcohol aqueous solutions are used for alternative washing respectively, and a product is obtained through vacuum drying.

The invention relates to a preparation method of carboxyl-terminated hyperbranched polyester modified organic silicon resin. The method comprises the following steps of: after heating 40 to 60 weight percent of carboxyl-terminated hyperbranched polyester, 1 to 10 weight percent of 3-glycidoxypropyltrimethoxysilane, 30 to 50 weight percent of organic silicon resin and a cross linking catalyst of which the weight percent is 1 to 10 percent of that of the carboxyl-terminated hyperbranched polyester for 1 to 3 hours at the temperature of 110 to 130 DEG C, warming to the temperature of 150 to 180 DEG C and heating for 1 to 3 hours; and finally, reducing the temperature to the room temperature and adding an organic solvent to regulate the solid content to the range of 60 to 70 percent so as to obtain the carboxyl-terminated hyperbranched polyester modified organic silicon resin. The method combines the advantages of the carboxyl-terminated hyperbranched polyester with the organic silicon resin and excellent heat resistance, excellent metal adhesion, low surface energy, excellent boiling resistance and excellent acid resistance are obtained. The resin prepared by the method disclosed by the invention can be used for preparing a coating with high temperature resistance and low surface energy.

The invention discloses a preparation method for an organic silicone thickening agent. The method comprises the following steps: (1) using dimethyl terminal hydroxy silicone oil, vinyl trimethoxy silane and 3-glycidoxypropyltrimethoxysilane as raw materials, adding barium hydroxide monohydrate, and performing a non-hydrolytic sol-gel reaction under heating and stirring conditions to prepare a crude product of the thickening agent; and (2) firstly performing reduced-pressure filtration on the crude product prepared in the step (1), and performing reduced-pressure distillation on the filtrate, so as to prepare the organic silicone thickening agent. The prepared organic silicone thickening agent provided by the invention is a colorless transparent viscous liquid, has low viscosity and is easyto use; and the preparation process has simple operation and good repeatability and controllability, does not use an organic solvent, saves energy, protects the environment, can obviously improve bonding strength between silicone rubber and a copper substrate, and has good compatibility.

The invention relates to an anticorrosive grafted graphene filler for an organic coating, consisting of the following materials by weight: 0.1-0.2 parts of triterpenoid saponin, 2-3 parts of phytic acid hexaphosphate, 0.6-1 part of anticorrosive additive, 2-4 parts of dodecafluoroheptylpropyltrimethoxysilane, 10-15 parts of precursor, 110-120 parts of graphene oxide, 1-2 parts of 3-aminopropyltriethoxysilane. The composite of the present invention exhibits better performance, can be applied to an organic coating material and has good corrosion resistance to the metal substrate. The composite material of the invention has good stability and superior comprehensive performance.

The invention relates to the field of nano functional paint and discloses hydrophilic self-cleaning paint, a composition for the same, a preparation method and application thereof. The composition comprises modified composite sol, nano titanium dioxide powder and alcohol, the modified composite sol is a compound obtained by enabling reaction of a water dispersion of the alcohol, tetraethoxysilane, modifier, deionized water and carbon nanotube in an acidic condition, wherein the modifier is one or multiple of gamma-glycidyl oxygen propyl trimethoxysilane, gamma-aminopropyl triethoxysilane and gamma-(methylacryloloxy)propyl trimethoxysilane. The hydrophilic self-cleaning material is high in environment-friendliness, high in weatherability, light transmittance and room-temperature film forming performance when being used on a photovoltaic power generation plate and can effectively reduce smirch adhesion and eliminate electrostatic influence.

The invention discloses a preparation method of a beta-cyclodextrin modified loofah sponge adsorbent. The preparation method comprises the steps that 1, a loofah sponge is organically treated; 2, the organic loofah sponge is modified through gamma-(2,3-glycidyl) propyl group trimethoxy silane; 3, by mass, 52-65% of dimethyl sulfoxide, 8-15% of beta-cyclodextrin and 8-15% of hexamethylene diisocyanate are added in a reactor, the temperature is increased to 55+/-2 DEGC and kept constant, stirring is carried out, a backflow reaction is carried out for 2-4 h, then 15-25% of the organic loofah sponge modified through the gamma-(2,3-glycidyl) propyl group trimethoxy silane is added, the sum of the percentages of all the components is 100%, the constant temperature is kept to be 65+/-2 DEG C, stirring is carried out, the backflow reaction is carried out for 6-8 h, acetone backflow washing is carried out after the reaction is finished, the mixture is taken out to be placed in a vacuum drying box to be dried, and the beta-cyclodextrin modified loofah sponge adsorbent is obtained. The beta-cyclodextrin modified loofah sponge adsorbent has the high adsorption capacity for perfluoro caprylic acid, and is low in cost and environmentally friendly.

The invention relates to a preparation method of a gel type iodine ion adsorbent, which comprises the following steps: mixing gamma-glycidyl ether oxygen propyl trimethoxy silane with organic amine and alkaline aqueous solution to form gel, wherein the volume ratio of the gamma-glycidyl ether oxygen propyl trimethoxy silane, the organic amine and the alkaline aqueous solution is 1: (0.1-5): (0.2-5); and aging, washing and drying the gel to obtain the massy gel type iodine ion adsorbent. The preparation method has the advantages of simple process and low cost. The gel type iodine ion adsorbent prepared by the preparation method has the advantages of high adsorption capacity, good selectivity, and simplicity and high efficiency in elution and regeneration. The gel type iodine ion adsorbent can be used for removing iodine ions in radioactive wastes, acetic acid and sodium chloride through an adsorption method and is free from secondary pollution. The gel type iodine ion adsorbent can also be used for extracting iodine ions in concentrated seawater, seaweed extract and brine through the adsorption method, and a system needs no oxidization and has no limit to the iodine content.

The invention provides a method for preparing BOPP (Biaxially-oriented Polypropylene). A catalytic system used comprises a solid catalyst component (A), alkyl aluminium (B) and a multivariant external electron donor (C), wherein the component (A) is a magnesium chloride-loaded Ti solid component and contains a dibutyl phthalate internal electron donor; the component (B) is a trialkylaluminium; the component (C) comprises a first class external electron donor and a second class external electron donor with a mole ratio between 0.5:99.5 and 90:10, wherein the first external electron donor selects cyclohexyl methyl dimethoxy silane, dicyclohexyl dimethoxy silane, 2-piperidine dimethoxy silane and composition thereof; and the second class external electron donor selects tetraethoxysilane, n-Propyltriethoxysilane, n-Propyltrimethoxysilane, 1,1-dimethyl amino trimethoxy silane, 1,1-dimethyl amino triethoxy silane and composition thereof. A small amount of ethylene, 1-butene or a composition thereof is added in polymerization as a comonomer.

The invention discloses an acrylic acid microgel emulsion having the automatic restoration function and a preparation method thereof, and belongs to the technical field of a modified coating. The acrylic acid microgel emulsion comprises a shell layer and a core, wherein the shell layer includes a shell solution, water, isobornyl methacrylate, butyl methacrylate, alkylphenol polyoxyethylene, sodium dodecanesulphonate and potassium persulphate, and the core includes styrene, lauryl methacrylate, acrylic acid, hydroxyethyl methylacrylate, glycidyl methacrylate, 3-glycidoxypropyltrimethoxysilane, 2,2'-azobis (2,4-dimethyl) valeronitrile and ethanol. The emulsion has the advantages of low VOC discharge capacity and high solid content. The shell layer doesn't crack and the core colloid isn't released when the emulsion is sprayed at the room temperature. When a scratch appears, hot water with the temperature of 80 DEG C is used to wash the scratch, and the shell layer is heated, softened, and collapsed to release the core colloid. The core colloid is heated and softened to gradually fill the scratch, is self-cross-linked, and is hardened, so that the scratch is lightened and disappeared.

The invention discloses a super-hydrophobic magnetic mixture which comprises a CNF (carbon nanofiber) water suspension, Fe3O4 nanoparticles and a hydrophobic modifier which are mixed mutually, whereinthe hydrophobic modifier is prepared from long-chain siloxane/fluorosilane and diethylenetriamine propyl trimethoxysilane (AS) through mixing. The super-hydrophobic magnetic mixture has the beneficial effects that a super-hydrophobic magnetic aerogel, paper and coating with good mechanical properties can be prepared, the preparation process is simple and environmental-friendly, and no organic solvent is used in the whole process.

The invention discloses an adsorbent which is a mesoporous silica particle that is crosslinked by gamma-(2, 3 epoxy propyl) gamma-chloropropyl trimethoxysilane and is modified with glutathione. The release quantity of gas phase ammonia of main stream smoke of cigarettes is reduced selectively by utilizing strong chemical effect between glutathione and ammonia, so that cigarette filter bars prepared from the adsorbent disclosed by the invention can effectively reduce the release quantity of gas phase ammonia in the main stream smoke of the cigarettes; the filter bars in which the adsorbent is added are applied to cigarettes, and the release quantity of the gas phase ammonia in the main stream smoke can be reduced by more than 30%.

Radiation curable composition for preparing a hybrid sol-gel layer on a surface of a substrate, wherein said composition comprises at least one radiation material capable of being polymerized and/or crosslinked by a cationic polymerization reaction upon exposure to a radiation; a combination of at least one organofunctional silane; and of at least one other silane selected from among the group consisting of poly(alkoxy siloxane), 3-glycidyloxypropyltrimethoxysilane (GPTMS), 2-(3,4-epoxycyclohexylethyltrimethoxysilane (TRIMO); and at least one cationic photoinitiator.

Method for preparing a hybrid sol-gel layer on a surface of a substrate using said composition and hybrid sol-gel layer so prepared.

Substrate comprising at least one surface coated with said hybrid sol-gel layer.