204 results about "Octamethylcyclotetrasiloxane" patented technology

The invention discloses one-step solvent-free methyl phenyl-terminated vinyl polysiloxane and silica gel, and the methyl phenyl-terminated vinyl polysiloxane is prepared by the following steps: adding octamethylcyclotetrasiloxane, octaphenylcyclotetrasiloxane and dimethyl-terminated vinyl silicone oil into a reaction container, and uniformly stirring; vacuumizing the reaction container, and introducing nitrogen to form an oxygen-free environment; heating the reaction container to 180-200 DEG C step by step, and adding a catalyst at 50-80 DEG C; the step-by-step heating comprises a first-stage pre-polymerization reaction at the temperature of 90 DEG C or below and a second-stage polymerization reaction at the temperature of 90 DEG C or above, and methyl phenyl vinyl-terminated polysiloxane is prepared. The high-temperature-resistant and high-pressure-resistant methyl phenyl silica gel is obtained by mixing methyl phenyl vinyl-terminated polysiloxane with an inhibitor, a cross-linking agent and a cross-linking catalyst, degassing, heating, cross-linking and curing, the performance requirements of high-power semiconductor devices on high-pressure resistance, high-temperature resistance and the like of packaging materials can be met, the product quality is stable, and the production efficiency is high.

The invention relates to the technical field of fabrics, and discloses a preparation method of an anti-wrinkle comfortable fabric, which comprises the following steps: by taking alkyl diamine, acrylonitrile, gamma-chloropropyl methyl dimethoxy silane and the like as raw materials, carrying out addition reaction, hydrolysis reaction and quaternization reaction to obtain polycarboxyl disilane gemini quaternary ammonium salt; octamethylcyclotetrasiloxane, polycarboxyl disilane gemini quaternary ammonium salt and the like are used as raw materials, quaternary ammonium salt modified polysiloxane is obtained through base catalysis copolymerization, then the quaternary ammonium salt modified polysiloxane is emulsified and prepared into finishing liquid, pure cotton fabric is soaked in the finishing liquid, and the anti-wrinkle comfortable fabric is obtained through two-dipping and two-rolling finishing. The crease resistance of the fabric is improved by utilizing a large number of amino groups and carboxyl groups contained in the finishing liquid, and the antibacterial property of the fabric is improved by utilizing a quaternary ammonium salt structure contained in the finishing liquid. Experiments prove that the prepared fabric has good crease-resistant comfort performance and antibacterial performance.

The invention discloses a preparation method of an antibacterial self-repairing organic silicon coating, and belongs to the technical field of organic silicon resin preparation, octamethylcyclotetrasiloxane, siloxane and / or amino silane and a catalyst are sequentially added into a four-neck flask filled with nitrogen, after stirring and heating, acid treatment is performed to obtain amino polysiloxane with a quaternary ammonium salt modified side chain, and then the amino polysiloxane with the quaternary ammonium salt modified side chain is added into the four-neck flask to obtain the antibacterial self-repairing organic silicon coating. Adding carbon tetrachloride and methyl acrylate, adding sodium hydroxide after the reaction is finished, heating and refluxing, filtering to obtain a liquid product, carrying out rotary evaporation to obtain amino acid modified polysiloxane, uniformly stirring the amino acid modified polysiloxane and a solvent to obtain a component A, uniformly stirring an antibacterial cross-linking agent and a solvent to obtain a component B, stirring the component A and the component B, coating, and drying to obtain a finished product. And curing to obtain the amino acid modified polysiloxane for self-repairing the antibacterial coating. Through synthesis of amino acid modified polysiloxane, reversible crosslinking of polysiloxane is realized through chelation of amino and carboxyl on metal ions, the reversible crosslinking can be repeated for multiple times, and the metal ions have an antibacterial effect, so that the service life of the coating is prolonged.

The invention discloses a preparation method of an organosilicon anticorrosive coating, and relates to the technical field of coatings. When the organic silicon anticorrosive coating is prepared, firstly, heptamethylcyclotetrasiloxane, N, N-dimethyl vinylamine and 4-(chloromethyl) phenylboronic acid pinacol ester are subjected to a reaction to prepare quaternized cyclotetrasiloxane, then the quaternized cyclotetrasiloxane, octamethylcyclotetrasiloxane and 1, 3-bis (3-aminopropyl) tetramethyldisiloxane are subjected to a reaction to prepare functionalized polysiloxane, and then the functionalized polysiloxane is subjected to a reaction to prepare the organic silicon anticorrosive coating. The preparation method comprises the following steps: reacting titanium dioxide nanosheets, aniline and (3-aminophenyl) phosphonic acid to prepare modified nano titanium dioxide, and finally mixing epoxy resin, functionalized polysiloxane, xylene, the modified nano titanium dioxide and a polyamide curing agent to prepare the organic silicon anticorrosive paint. The prepared organic silicon anticorrosive paint has excellent corrosion resistance, self-repairing performance, flame retardance and antibacterial performance.

The invention discloses a self-aggregation weak-consolidation multifunctional sand control agent and application thereof, and belongs to the technical field of oil gas chemistry. The sand control agent is prepared by simply mixing 0.2-0.6 part by weight of a hydrophobic modifier, 0.6-1.2 parts by weight of a chemical modifier and 2-4 parts by weight of an organic solvent. The hydrophobic modifier is selected from one or more of the following components: methacryloyloxy silane, heptadecafluorodecyl trimethoxy silane, amino alkyl polydimethylsiloxane, octamethylcyclotetrasiloxane, poly [3-((2-aminoethyl) amino) propyl] methyl (dimethyl) siloxane, gamma-propyl trimethoxy silane and the like; the chemical modifier is a compound containing alkenyl. The sand control agent can be used for coating modification of a proppant, self-aggregation and clustering in water are realized, and solidified sand is formed through polymerization of the alkenyl-containing compound on the surface, so that the sand control effect is achieved; the sand control agent can also be directly added into fracturing fluid and permeates into a stratum to form a hydrophobic consolidation layer, so that the effect of stabilizing a rock wall surface is achieved.

The invention relates to the field of transparent flame-retardant modification of polycarbonate, in particular to a sulfonated polyborosiloxane flame retardant for transparent flame-retardant polycarbonate and a preparation method of the sulfonated polyborosiloxane flame retardant. The preparation method comprises the following steps: adding octamethylcyclotetrasiloxane, tetraethyl silicate, boric acid and a sulfonate compound into an organic solvent, adjusting the pH value to 2-5, and reacting to obtain the sulfonated polyborosiloxane flame retardant. The sulfonated polyborosiloxane provided by the invention is simple in preparation process and safe in process, and does not involve the use of halogen compounds. The sulfonated polyborosiloxane prepared by the method has the characteristics of good thermal stability, high carbon residue, self-extinguishing property and the like, and has an excellent effect of expanding to form carbon.

The invention relates to the technical field of fabric waterproofing agents, in particular to a polyurethane modified organic silicon fluoride-free waterproofing agent and a preparation method thereof. The polyurethane modified organic silicon fluoride-free waterproof agent is prepared from the following raw materials in parts by mass: 5 to 15 parts of hexamethylene diisocyanate, 5 to 15 parts of butyl acrylate, 1 to 5 parts of methyl methacrylate, 40 to 60 parts of octamethylcyclotetrasiloxane, 10 to 30 parts of alpha, omega-dihydroxy polydimethylsiloxane and 5 to 10 parts of gamma-aminopropyl methyl diethoxy silane. The invention relates to a silane coupling agent, which is prepared from the following raw materials in parts by weight: 1 to 5 parts of glycidyl ether oxypropyl trimethoxy silane, 0.1 to 1 part of tetramethylammonium hydroxide, 0.1 to 1 part of triethylamine, 2 to 5 parts of tetraethoxysilane, 0.2 to 0.75 part of ammonia, 0.1 to 1 part of silane coupling agent KH-570, 0.01 to 0.1 part of dibutyltin dilaurate, 1 to 5 parts of epsilon-caprolactam, 1 to 2 parts of emulsifier and 0.1 to 1 part of initiator. The fabric treated by the method has good softness and excellent hydrophobic effect.

The invention discloses a preparation method of alkyl modified silicone oil single-phase immersed coolant and application of the alkyl modified silicone oil single-phase immersed coolant in data center cooling, and belongs to the technical field of coolants.The preparation method comprises the steps that firstly, long-chain alpha olefin is used for modifying tetramethylcyclotetrasiloxane to obtain long-chain alkyl tetramethylcyclotetrasiloxane; then, long-chain alkyl tetramethyl cyclotetrasiloxane and octamethyl cyclotetrasiloxane serve as monomers, modified double-long-chain alkyl tetramethyl disiloxane serves as an end-capping reagent, copolymerization is conducted, and the long-chain alkyl end-capped single-long-chain alkyl monomethyl siloxane / dimethyl siloxane copolymer is obtained. By adopting the method disclosed by the invention, a copolymer product with relatively low steric hindrance can be prepared, a side chain alkyl group and a polymer structure can be accurately regulated and controlled, silicon-hydrogen bonds and olefin are not remained in the obtained product, and the product can be used as a single-phase cooling liquid of an immersed liquid cooling system of a data center to be applied to immersed cooling of the data center and has a wide application prospect.

The invention belongs to the technical field of photovoltaic tempered glass, and particularly relates to photovoltaic tempered glass and a preparation method thereof.The photovoltaic tempered glass sequentially comprises tempered glass and a protective coating from bottom to top; the protective coating is prepared from the following raw materials in parts by mass: 20 to 45 parts of fluorine-containing polysiloxane, 10 to 18 parts of tetraethoxysilane, 10 to 20 parts of silicon dioxide / tetrapod-like zinc oxide whisker / alkyl phosphate, 10 to 20 parts of titanium dioxide / polymer molecular brush, 0.5 to 1 part of catalyst and 80 to 120 parts of solvent; the fluorine-containing polysiloxane is obtained by carrying out a reaction on octamethyl cyclotetrasiloxane, decamethyl cyclopentasiloxane and trifluoropropyl methyl cyclotrisiloxane. The photovoltaic tempered glass provided by the invention has super-hydrophobicity, excellent light transmittance, high-temperature and high-humidity resistance, high and low temperature impact resistance and ultraviolet resistance.

The invention relates to the technical field of coatings, and discloses a charge transport wear-resistant coating for a photosensitive drum and a preparation method thereof.The charge transport wear-resistant coating for the photosensitive drum comprises a solvent, resin, a charge transport material and carbon nanotube modified silicone oil, and the components are mixed to prepare the charge transport wear-resistant coating for the photosensitive drum. According to the present invention, the electrical property and the wear resistance of the coating material are improved by using the carbon nano-tubes and the quaternary ammonium salt structure contained in the intermediate 3, and the disiloxane structure contained in the intermediate 3 and octamethylcyclotetrasiloxane are subjected to hydrolytic condensation to form the huge cross-linked network structure so as to further improve the wear resistance of the coating material. Then the surface of the photosensitive drum is coated with the coating, the wear resistance can be improved through the coating, the problems that an existing charge transmission coating is poor in wear resistance and the requirement for high wear resistance of the photosensitive drum is difficult to meet are solved, the requirement for high wear resistance of the charge transmission coating can be met, and the service life of the photosensitive drum is prolonged.

The invention discloses a skin-friendly antibacterial foaming material and application thereof in footwear products, and relates to the technical field of high polymer materials. When the skin-friendly antibacterial foaming material is prepared, firstly, tetramethyl tetravinyl cyclotetrasiloxane and a flame retardant react to obtain flame-retardant cyclosiloxane, 1, 3-bis (aminopropyl-1, 1, 3, 3-tetramethyl disiloxane and maleic anhydride react to obtain an end-capping reagent, the flame-retardant cyclosiloxane and octamethyl cyclotetrasiloxane are subjected to ring opening polymerization, and the skin-friendly antibacterial foaming material is obtained. Carrying out end-capping by an end-capping reagent to obtain functionalized polysiloxane, loading a foaming agent on hollow silicon dioxide, and grafting chitosan quaternary ammonium salt; and finally, polymerizing polyether amine, furan-2, 5-dimethyl dicarboxylate, 3, 5-diaminobenzene sulfonic acid and dimethyl malonate to prepare modified polyamide, and blending and foaming the modified polyamide, the functionalized polysiloxane, the modified silicon dioxide and chitosan quaternary ammonium salt to prepare the skin-friendly antibacterial foaming material. The prepared skin-friendly antibacterial foaming material has excellent flame retardance, antibacterial performance and self-repairing performance.

The invention discloses an acid and alkali resistant and salt spray resistant coating and a preparation method thereof, and relates to the field of coatings. When the acid and alkali resistant and salt fog resistant coating is prepared, 4-imidazole formaldehyde reacts with 3-aminopropyldimethoxymethylsilane and 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, and then reacts with hexamethyldisiloxane, octamethylcyclotetrasiloxane and 2, 4, 6, 8-tetramethylcyclotetrasiloxane to prepare modified polysiloxane; the preparation method comprises the following steps: reacting graphene oxide with 3-aminoethyl thiophene, 3-hexylthiophene and 3-allyl thiophene to prepare modified graphene; the preparation method comprises the following steps: uniformly mixing modified graphene, 1, 3-divinyl-1, 1, 3, 3-tetramethyldisiloxane platinum, a defoaming agent and modified polysiloxane to obtain a component A, taking waterborne epoxy emulsion as a component B, and uniformly mixing the component A and the component B to obtain the acid-alkali-resistant salt-fog-resistant coating. The prepared acid-alkali-resistant salt-fog-resistant coating has good acid-alkali-resistant, salt-fog-resistant, flame-retardant and hydrophobic properties.

The invention belongs to the technical field of textile dyeing and finishing, and particularly relates to a long-acting hydrophilic, soft, fluffy and washable silicone oil composition as well as a preparation method and application thereof. The silicone oil composition is prepared from the following raw materials in parts by mass: 20 parts of modified silicone oil, 0.5 to 2.5 parts of anionic surfactant, 0.5 to 2 parts of nonionic surfactant, 0.1 to 1 part of polyhexamethylene biguanide hydrochloride, 0.2 to 0.5 part of glacial acetic acid and 76 to 79 parts of water, the modified silicone oil is prepared from the following raw materials: octamethylcyclotetrasiloxane, tetramethylethylenediamine, secondary aminated polyether amine, allyl epoxy polyether, polyether amine, allyl glycidyl ether, isopropanol, diethylene glycol butyl ether, an end-capping reagent and a catalyst. The silicone oil composition provided by the invention can endow a fabric with a long-acting hydrophilic effect, excellent hand feeling, low yellowing and washability; and the dye has excellent stability, is safe and stable to use, and does not influence the colored light of the dyed fabric.

The invention discloses an anti-ultraviolet automobile window film and a preparation method thereof, and relates to the field of high polymer materials. When the anti-ultraviolet automobile window film is prepared, methylcyclotetrasiloxane, octamethylcyclotetrasiloxane, 3-glycidyl propyl (dimethoxy) methylsilane and 1, 3-bis (3-aminopropyl)-1, 1, 3, 3-tetramethyldisiloxane are subjected to a reaction, and modified polysiloxane is prepared; the preparation method comprises the following steps: reacting benzo [1, 2-d: 5, 4-d '] bis (oxazole)-2, 6-dithiol with 4-aminobenzoyl chloride to prepare a modified ultraviolet absorbent; isophorone diisocyanate, polytetrahydrofuran ether glycol, the modified polypyrrole particles, the modified polysiloxane and the modified ultraviolet absorbent are subjected to a reaction, and the reaction product is spread in a mold. The anti-ultraviolet automobile window film prepared by the invention has good anti-ultraviolet, heat-insulating, flame-retardant and anti-aging properties and good mechanical properties.

The invention relates to the field of coatings, and discloses a self-cleaning nano-coating glass plate and a preparation method and application thereof.The nano-coating is prepared from organic silicon resin, epoxy resin, modified nano titanium dioxide, long-chain alkyl methyl silicone oil, a curing agent and a diluent; the modified nano titanium dioxide is prepared by grafting a modified silane coupling agent and nano titanium dioxide, wherein the modified silane coupling agent is prepared by reacting a modified phosphorus-containing antibacterial monomer with vinyltriethoxysilane; the modified phosphorus-containing antibacterial monomer is prepared by reacting eugenol with N-bromosuccinimide, then reacting with 2-amino-4-methylthiazole, further reacting with diphenyl phosphinyl chloride, and reacting the obtained phosphorus-containing antibacterial monomer with 1, 1, 3, 3-tetramethyldisiloxane; the long-chain alkyl methyl silicone oil is prepared by using octamethylcyclotetrasiloxane, dodecyl methyl dimethoxy silane and hexamethyldisiloxane as raw materials, and the prepared nano coating has a super-hydrophobic surface and also has excellent antibacterial activity, wear resistance and flame retardance.

The invention discloses an anti-scaling self-cleaning PVC pipe and a preparation method thereof, and belongs to the technical field of plastic pipes. The pipe is prepared from the following components in parts by weight: 100 parts of polyvinyl chloride powder, 5-20 parts of a siloxane compound additive, 3-6 parts of a heat stabilizer, 0.5-4 parts of an external lubricant, 1-10 parts of chlorinated polyethylene, 5-20 parts of an anti-scaling additive, 10-50 parts of light calcium carbonate and 1-20 parts of other processing additives, the siloxane compound additive is at least two of hydrophobic silicon dioxide, polydimethylsiloxane, octamethylcyclotetrasiloxane and a ZTZLJ-40 liquid hydrophobic agent; and the other processing aids are at least one of acrylate copolymers. The hydrophobic, anti-scaling and thermal stability performances of the pipe are effectively improved, and the service life and the maintenance period of the pipe are prolonged.

The invention relates to the field of organic silicon pressure-sensitive adhesives, in particular to a high-viscosity / high-temperature-resistant organic silicon pressure-sensitive adhesive based on a mussel viscosity effect and a preparation method. The problems of low adhesive force and poor high-temperature resistance of an organic silicon pressure-sensitive adhesive formed by a common technology are solved. Comprising octamethylcyclotetrasiloxane, aminopropyl siloxane, deionized water, polyphenol similar to mussel adhesion protein, an initiator, synthesized polyphenol modified aminopropyl silicone rubber, vinyl MQ resin and an organic solvent. According to the invention, the adhesion performance and high temperature resistance of the organic silicon pressure-sensitive adhesive are adjusted by adjusting the ratio of the aminopropyl siloxane monomer to the octamethylcyclotetrasiloxane monomer.

The invention discloses a UV photocuring adhesive, a preparation method thereof and an application of the UV photocuring adhesive in the electronic field, and relates to the field of adhesives. The preparation method comprises the following steps: when the UV photocuring adhesive is prepared, carrying out a reaction on dihydroxyl modified 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, p-phenylene diisocyanate, polyethylene glycol and 2-ethyl-4-methylimidazole, so as to obtain imidazole-terminated isocyanate, and carrying out a reaction on the imidazole-terminated isocyanate and the 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, so as to obtain the UV photocuring adhesive. The modified lignin, butanediamine and N, N '-methylene bisacrylamide are subjected to a reaction, and a double-bond reactant is prepared; the preparation method comprises the following steps: reacting epoxy-terminated siloxane with octamethylcyclotetrasiloxane, tetramethyltetravinyl cyclotetrasiloxane and tetramethylammonium hydroxide to obtain modified siloxane, and finally, uniformly mixing imidazole-terminated isocyanate, a double-bond reactant, modified polysiloxane and benzoin butyl ether to obtain the polyurethane adhesive. The UV light-cured adhesive prepared by the invention has good adhesive property, anti-aging property and flame retardant property.

The invention relates to the technical field of epoxy resin coatings, in particular to a radiation-resistant self-repairing epoxy resin coating and a preparation method thereof. The radiation-resistant self-repairing epoxy resin coating comprises the following raw materials: a component A, a component B and a component C, wherein the mass ratio of the component A to the component B to the component C is (50-70): (40-50): (10-20); the component A comprises the following raw materials in parts by mass: 50-60 parts of bisphenol F epoxy resin, 8-12 parts of calix [5] arene, 1-2 parts of zinc acetylacetonate and 15-20 parts of a solvent; the component B is prepared from the following raw materials in parts by mass: 30 to 40 parts of octamethylcyclotetrasiloxane, 5 to 10 parts of gamma-aminopropyltriethoxysilane, 1 to 3 parts of vanillin, 0.5 to 1 part of a catalyst and 0.1 to 0.3 part of p-toluenesulfonic acid; and the component C is an amine curing agent.

The invention relates to the field of high polymer materials, and discloses a high-transparency and high-tear-resistance gas-phase silicone rubber composite material which is prepared by reacting raw materials containing the following components, the base rubber is an octamethylcyclotetrasiloxane (D4) monomer with the purity of more than or equal to 99.5%, and the content of hydrogen-containing siloxane impurities is less than or equal to 50ppm after vacuum distillation treatment; the nano filler is a core-shell type TiO2 coated SiO2 filler, the particle size of inner core TiO2 is 20 nm, the thickness of an outer shell SiO2 layer is 5-8 nm, the surface of the SiO2 layer is grafted with a silane coupling agent KH-570, and the grafting rate is larger than or equal to 85%; the flexibilizer is a hyperbranched organic silicon flexibilizer with the branching degree being greater than or equal to 80%; the initiator is a peroxide initiator DCP; the block ratio of the styrene-vinyl siloxane block copolymer is 3: 1, the shore hardness of the composite material is 70 degrees, the light transmittance is larger than or equal to 92%, and the tearing strength is larger than or equal to 35 kN / m. Compared with the prior art, the high-performance gas-phase silicone rubber provided by the invention has the advantages of high light transmittance and high tear strength, and has great technical value and economic significance.

The invention discloses a waterproof high-temperature-resistant low-temperature-resistant UV (ultraviolet) photocuring adhesive and a preparation method thereof, and relates to the field of photocuring adhesives. When the waterproof, high-temperature-resistant and low-temperature-resistant UV photocuring adhesive is prepared, clay, maleic anhydride and 2, 6-diaminopyrazine are uniformly mixed to prepare modified clay; the preparation method comprises the following steps: reacting epoxy resin with phosphoric acid di (hydroxyethyl acrylate) ester to obtain modified resin; octamethylcyclotetrasiloxane, mercaptopropyl methyl dimethoxy silane, trifluoropropyl methyl dimethoxy silane and hexamethyldisiloxane are subjected to a reaction, and modified organic silicon is obtained; and uniformly mixing the modified resin, the modified clay, methylboronic acid and the modified organic silicon to obtain the waterproof high-temperature-resistant low-temperature-resistant UV photocuring adhesive. The waterproof, high-temperature-resistant and low-temperature-resistant UV photocuring adhesive prepared by the invention has excellent flame retardance, waterproofness, high-temperature resistance and low-temperature resistance.

The invention discloses a 27.5 KV positive feeder insulation coating material and a preparation method thereof, and relates to the field of coatings. The 27.5 KV positive feeder insulation coating material prepared by the invention is prepared by the following steps: reacting furan with 6-bromo-1-hexene to obtain a comonomer, and reacting the comonomer, polytetrafluoroethylene and ethylene to obtain a copolymer; the preparation method comprises the following steps: protecting maleic anhydride by furan, reacting with 3-aminopropyl methyl dimethoxy silane, performing deprotection to obtain modified silane, and reacting the modified silane with octamethylcyclotetrasiloxane to obtain polysiloxane; the copolymer, the modified polysiloxane, the antioxidant 1010 and methylbenzene react to prepare a base material, and then the base material, the coupling agent and the wear-resistant agent are evenly mixed and discharged to prepare the wear-resistant coating. The 27.5 KV positive feeder insulation coating material prepared by the invention has good tensile strength and self-repairing performance, can realize self-repairing under a heating condition, and prolongs the service cycle of the material.

The present invention relates to a bridge surface waterproofing method having excellent waterproofness and constructability. The present invention provides a bridge surface waterproofing method comprising the steps of: evenly preparing the surface of a bridge surface; forming a primer layer on the surface of the bridge surface; forming a waterproofing layer that is from 2 mm to 4 mm by applying a bridge surface waterproofing agent composition onto the primer layer so that the waterproofing layer is inclined in a specific direction of the bridge surface; and forming an asphalt layer on the waterproofing layer, wherein the bridge surface waterproofing agent composition comprises 40 to 60 wt% of asphalt, 5 to 10 wt% of styrene butadiene styrene, 5 to 10 wt% of ethylene glycol dimethacrylate, 3 to 5 wt% of octamethylcyclotetrasiloxane, 5 to 10 wt% of silica particles having an average particle diameter of 200 to 400 nm, 5 to 10 wt% of silica particles having an average particle diameter of 700 to 1000 nm, 3 to 8 wt% of methyl methacrylate, 1 to 3 wt% of 4-hydroxy-3-methoxybenzoic acid, 5 to 10 wt% of a fiber reinforcing material, 1 to 3 wt% of a dispersant, 1 to 3 wt% of a viscosity modifier, and 1 to 3 wt% of a tackifier.

The application discloses a preparation of low-yellowing polyether modified amino silicone oil and a fabric finishing agent containing the same, and relates to amino silicone oil and application thereof. The application uses octamethylcyclotetrasiloxane and 3-piperazinylpropylmethyldimethoxysilane as key raw materials, converts original primary amino groups into secondary amino groups on the basis of traditional amino silicone oil, simultaneously pays attention to control of the molecular mass of the modified amino silicone oil, significantly improves the chemical stability and oxidation resistance of the silicone oil, and secondarily modifies the silicone oil by using allyl epoxy polyether, so that the originally non-hydrophilic amino silicone oil obtains certain hydrophilicity, and the self-emulsifying ability of the silicone oil and the stability of the emulsion are significantly improved. Through the modification, the final silicone oil molecular chain segment can be repeatedly and directionally arranged on the fiber surface in the form of alternating polyether and polysiloxane structure, so that the finishing agent has good hydrophilicity, softness and washability for finishing fabrics.

The invention relates to the field of textile functional finishing agents, in particular to an organosilicon waterproof finishing agent and a preparation method thereof.The preparation method comprises the steps that octamethylcyclotetrasiloxane, hexamethyldisiloxane, tetramethylcyclotetrasiloxane and an initiator are mixed to react, and side chain hydrogen-containing silicone oil is obtained through filtering; the preparation method comprises the following steps: mixing side chain hydrogen-containing silicone oil with 4-vinyl epoxy cyclohexane and a methacrylate compound, reacting under the protection of nitrogen, and adding a catalyst to obtain modified silicone oil; mixing and reacting the modified silicone oil with a coupling agent to obtain amino modified silicone oil; the preparation method comprises the following steps: mixing side chain hydrogen-containing silicone oil with allyl polyethylene glycol for reaction to obtain a nonionic silicon-containing surfactant; and finally, mixing the amino modified silicone oil with a nonionic silicon-containing surfactant, adding an acid solution, and adding water for emulsification to obtain the organosilicon waterproof finishing agent. Through the specific modified silicone oil and the nonionic silicon-containing surfactant, a uniform and stable waterproof film is formed on the surface of the fabric, the waterproof grade is improved, and the waterproof finishing agent is suitable for waterproof finishing of various fabrics.

The invention belongs to the field of organosilicon polymer chemistry, and particularly discloses an organosilicon polymer, a self-emulsifying silicone oil emulsion and a preparation method. The organic silicon polymer is formed by polymerizing a monomer shown in a formula I and a monomer shown in a formula II; wherein the mass ratio of the monomer shown in the formula I to the monomer shown in the formula II is (1-9): 1; in the formula I, X is 25 to 450, and R is a C1-C18 alkyl group, a phenyl group, or a C1-C18 alkyl group with 1 to 2 amino substituent groups, and in the formula II, X is 25 to 450, and R is a C1-C18 alkyl group, a phenyl group, or a C1-C18 alkyl group with 1 to 2 amino substituent groups. Starting from the initial raw material octamethylcyclotetrasiloxane, the organosilicon polymer can be prepared by only three steps; the process is short and time is reduced; because hydrogen-containing silicone oil is not involved in the preparation process, byproducts are not generated, and water washing is not needed in the preparation process, so that water consumption and energy consumption are reduced.

The invention relates to glue for bonding a high-temperature electrostatic chuck as well as a preparation method and application thereof, and relates to the technical field of glue. The glue is prepared from the following components in parts by weight: 28 to 40 parts of octamethylcyclotetrasiloxane, 35 to 40 parts of aluminum oxide, 2 to 4 parts of calcium carbonate, 3 to 5 parts of silicon oxide, 2 to 4 parts of polymer filler, 2 to 5 parts of silicate, 5 to 8 parts of non-oxide filler, 3 to 6 parts of organic acid ester, 2 to 5 parts of tin catalyst and 1 to 2 parts of silane coupling agent. During preparation, aluminum oxide and octamethylcyclotetrasiloxane are firstly subjected to ball milling for 8 hours, and then other raw materials are added for ball milling for 16 hours. The glue has high thermal conductivity, excellent high temperature resistance, good mechanical strength and high bonding tensile strength, and can maintain good corrosion resistance at the working temperature of 400 DEG C or above if being applied to high-temperature bonding of the electrostatic chuck.

The invention relates to the technical field of rubber composite materials, and discloses fluorinated silicone rubber as well as a preparation method and application thereof. The method comprises the following steps: in the presence of a catalyst, carrying out first reaction on a hydrolytic polymerization product of gamma-aminopropyl methyl diethoxy silane and octamethylcyclotetrasiloxane to obtain a first reaction product; and dropwise adding 1, 3, 5-tri (3, 3, 3-trifluoropropyl)-1, 3, 5-trimethylcyclotrisiloxane into the first reaction product, and adding an end-capping reagent to carry out a second reaction after dropwise adding is completed, thereby obtaining the fluorosilicone rubber. According to the fluorosilicone rubber provided by the invention, amino is introduced into a molecular chain, and hydrogen bond interaction can be formed between fluorine and nitrogen; the fluorosilicone rubber is further compounded with assistants such as a nanofiller, the side group fluorine and the amido form a hydrogen bond with the hydroxyl group on the surface of the nanofiller, and the interaction between molecular chains is increased, so that the low-temperature damping performance of the fluorosilicone rubber composite material is improved.

The present invention relates to the technical field of defoamers, and discloses a method for preparing a polyether-modified silicone defoamer. The present invention uses the hydroxyl contained in silicon dioxide and γ-glycidyloxypropyltrimethoxysilane to obtain epoxy-modified nano-silica through hydrolysis and condensation reaction. Cardanol, ethylene oxide, epoxy-modified nano-silica, etc. are used as raw materials, and modified polyether is obtained through ring-opening polymerization. Octamethylcyclotetrasiloxane, aminopropyltriethoxysilane, etc. are used as raw materials, and modified hydrogen-containing silicone oil is obtained under the catalytic reaction of concentrated sulfuric acid. Modified hydrogen-containing silicone oil and modified polyether are used as raw materials, and chloroplatinic acid is used as a catalyst to obtain polyether-modified silicone oil. Then, it is used as the main body, and a polyether-modified silicone defoamer is prepared by adding silicone paste, a thickener, etc. Thereto. The polyether-modified silicone defoamer prepared by the present invention has excellent defoaming effect and stability.

The invention discloses a novel fluffy softening agent extremely resistant to salt, alkali and high temperature, a preparation method and application, and relates to the technical field of textile printing and dyeing auxiliaries. The fluffy softening agent is prepared from the following raw materials in parts by weight: 30 to 50 parts of octamethylcyclotetrasiloxane, 10 to 20 parts of polyether epoxy end-capping reagent, 5 to 15 parts of organic silicon derivative, 1 to 3 parts of emulsifier, 2 to 6 parts of surfactant, 0.5 to 2 parts of bacteriostatic agent, 0.05 to 0.1 part of pH regulator and 40 to 70 parts of solvent. The fluffy softener prepared by the method can endow a fabric with an excellent soft, fluffy and elegant hand feeling style, has extremely salt-alkali-resistant and high-temperature-resistant stability performance, and has no obvious influence on the whiteness, color light and fastness of the dyed fabric.