9 results about "Vinyl phosphate" patented technology

An extreme-cold resistant low-fume halogen-free flame-retardant polyolefin sheath, a preparation method therefor, and a cable. The sheath comprises the following raw materials in parts by mass: 4-16 parts of an ethylene-vinyl acetate copolymer, 7-13 parts of a phosphate group functionalized linear low-density polyethylene, 9-15 parts of an ethylene-octene copolymer, 5-10 parts of a maleic anhydride-grafted ethylene-methyl methacrylate copolymer, 10-15 parts of magnesium hydroxide, 40-50 parts of aluminum hydroxide, etc. The preparation method for the phosphate group functionalized linear low-density polyethylene comprises: adding a catalyst to a pre-cooled ethylene monomer, adding a vinyl phosphate ester and an initiator after the reaction, and reacting for 1-2 hours at a temperature of 65-75°C and a pressure of 15-35 Mpa and then terminating the reaction, thereby obtaining the phosphate group functionalized linear low-density polyethylene. Compared with unfunctionalized polyethylene, the phosphate group functionalized polyethylene used has greatly improved low-temperature and flame-retardant performance, and can improve the overall flame-retardant and low-temperature performance of the formula.

The invention relates to the technical field of biomedical materials, in particular to multi-material 3D printing bionic gradient soft-hard integrated hydrogel as well as a preparation method and application thereof. Based on a copolymerization system of high-strength supramolecular N-acryloylglycinamide and vinyl phosphoric acid, an NAGA aqueous solution and an NAGA-VPA aqueous solution are printed into hydrogel of a gradient structure by adopting a DLP multi-material printing technology, then the hydrogel is sequentially soaked in a calcium-phosphorus mixed aqueous solution (Ca / P = 1.67), ammonia water, a calcium chloride aqueous solution and deionized water, and the hydrogel is prepared through a hydrothermal method. Therefore, in-situ gradient deposition and curing of hydroxyapatite (HAP) are realized. The multi-material 3D printing bionic gradient soft-hard integrated hydrogel prepared by the method has a continuous biochemical-mechanical gradient, a surface layer low-modulus area is matched with cartilage performance, a deep layer high-mineralization area is integrated with bone tissue, the HAP crystallinity of a transition area is in spatial dependence distribution, and the hydrogel is suitable for osteochondral defect repair and manufacturing of bionic joint prostheses.

The invention belongs to the technical field of gel electrolytes, and particularly relates to an intrinsic flame-retardant gel polymer electrolyte, a preparation method thereof and a battery. The intrinsic flame-retardant gel polymer electrolyte comprises a flame-retardant polymer and an electrolyte, and the flame-retardant polymer comprises the following raw material components: diethyl vinyl phosphate, methyl methacrylate and polyethylene glycol dimethacrylate, diethyl vinyl phosphate is chemically bonded in a polymer network formed by cross-linking polymerization of methyl methacrylate and polyethylene glycol dimethacrylate through an in-situ thermal polymerization reaction, and the volume ratio of the dosage of methyl methacrylate to the dosage of polyethylene glycol dimethacrylate to the dosage of diethyl vinyl phosphate is (1-3): 1: 1. The electrolyte can inhibit a combustion chain reaction under extreme conditions without depending on an additional flame retardant additive, and can realize collaborative optimization of intrinsic flame retardant performance and electrochemical performance on the premise of not influencing an ion transmission channel of the electrolyte.

The invention discloses a phosphate type polycarboxylate superplasticizer with a slow release function and a preparation method thereof, a concrete admixture composition and application thereof, and belongs to the technical field of phosphate type polycarboxylate superplasticizers, the phosphate type polycarboxylate superplasticizer comprises (a) carboxylic acid monomer units accounting for 70-85% of the total molar ratio; (b) a vinyl phosphoric acid monomer unit accounting for 2-8% of the total molar ratio; (c) a functionalized polyether macromonomer unit which accounts for 10-25% of the total molar ratio and has a structural general formula of CH2 = C (R)-C (= O)-O-(CH2) n-C (= O)-O-(CH2CH2O) m-CH2CH2-O-P (= O) (OH)-OH; wherein R is H or CH3, n is equal to 1-3, and m is equal to 10-40. According to the invention, slow release of the polycarboxylic acid water reducing agent is realized, and the workability maintaining capability of mud-containing concrete in high-temperature long-distance transportation is remarkably improved while the high water reducing rate is maintained.

The invention belongs to the technical field of nylon materials, and particularly discloses a high-temperature-resistant and flame-retardant nylon brush wire and a preparation method thereof, and the high-temperature-resistant and flame-retardant nylon brush wire comprises the following components by weight: 80-90 parts of PA6; 8-10 parts of modified carbon fiber; 0.3 to 0.5 part of an initiator; 6-8 parts of a toughening agent; 0.2 to 0.3 part of an antioxidant; wherein the modified carbon fiber is a vinyl phosphate-containing ionic liquid modified carbon fiber material, and the high-temperature-resistant and flame-retardant nylon brush wire provided by the invention has excellent high temperature resistance and flame retardance.

The invention relates to a divisional application of which the application number is 202411350349.8. The invention relates to a preparation method of a cytidine vinyl phosphate compound, which comprises the step of contacting a compound shown in a formula (I) with an ammonia source compound in an organic solvent under an ammonolysis reaction condition, in the compound as shown in the formula (I), R1, R2, R5, R6, R8 and R9 are respectively and independently hydrogen, methyl or ethyl; r3 and R4 are respectively and independently one of hydrogen, halogen, hydroxyl, protected hydroxyl, alkyl with 1 to 3 carbon atoms, alkoxy with 1 to 3 carbon atoms, substituted alkyl with 1 to 3 carbon atoms and substituted alkoxy with 1 to 3 carbon atoms; each R7 is independently one of a hydroxyl group, a protected hydroxyl group, a C1-C3 alkyl group, a C1-C3 alkoxy group, a substituted C1-C3 alkyl group, and a substituted C1-C3 alkoxy group; and R10 is hydrogen or methyl. The invention also relates to application of the cytidine vinyl phosphate compound prepared by the method.

The application discloses a phosphate type polycarboxylic water reducing agent with slow-release function, a preparation method thereof, a concrete admixture composition and application thereof, and belongs to the technical field of phosphate type polycarboxylic water reducing agents, and comprises (a) a carboxylic monomer unit, accounting for 70-85% of the total mole ratio; (b) a vinyl phosphate monomer unit, accounting for 2-8% of the total mole ratio; and (c) a functional polyether macromonomer unit, accounting for 10-25% of the total mole ratio, and the structural general formula is as follows: CH2=C(R)-C(=O)-O-(CH2) n -C(=O)-O-(CH2CH2O) m -CH2CH2-O-P(=O)(OH)-OH; wherein R=H or CH3, n=1-3, and m=10-40. The application realizes slow release of the polycarboxylic water reducing agent, significantly improves the workability maintenance capability of the mud-containing concrete in high-temperature long-distance transportation while keeping high water-reducing rate.

The invention relates to an anionic hyperdispersant, modified phthalocyanine blue and a preparation method and application thereof, the hyperdispersant is formed by copolymerization of styrene, a polymerizable monomer and a cross-linking agent, and the polymerizable monomer is selected from sodium vinyl phosphate, sodium acrylate, sodium vinyl benzoate or sodium p-styrenesulfonate; the cross-linking agent is selected from N, N-methylene bisacrylamide or divinyl benzene; preferably, the hyperdispersant is formed by copolymerization of styrene, sodium acrylate and N, N-methylene bisacrylamide. The modified phthalocyanine blue comprises phthalocyanine blue and an anionic hyperdispersant coating the surface of the phthalocyanine blue, the obtained hyperdispersant can improve the dispersibility of the phthalocyanine blue pigment, and the obtained modified phthalocyanine blue is high in coloring degree and high in stability in water and has higher application value.

This invention belongs to the field of oilfield development technology, specifically relating to a cationic clay stabilizer and its preparation method. The clay stabilizer comprises the following components by weight: 10-20 parts of a copolymer of 3-chloro-2-hydroxypropylmethyldiallyl ammonium chloride / dimethyldiallyl ammonium chloride, and 3-10 parts of vinyl phosphate-modified silica. The preparation method is as follows: the copolymer and modified silica are added together to a stirrer, heated to 50-60°C and stirred at 100-300 r / min, then cooled to 40-45°C and stirred again at 300-600 r / min to obtain the clay stabilizer. The clay stabilizer of this invention exhibits excellent comprehensive performance, high anti-swelling rate (greater than 92% even at 150°C, and higher than 93% after three water washes), good salt and acid / alkali resistance, and significantly improves the hydrophobicity of clay surfaces, making it suitable for complex oil reservoir conditions such as high temperature and high salinity.