33results about How to "High response controllability" patented technology

The invention relates to a novel grafted antibacterial polypropylene, which is mainly obtained by grafting polypropylene and maleic anhydride to obtain an intermediate, which is then prepared by nucleophilic reaction with a brominated organic antibacterial agent; wherein the organic antibacterial agent molecule contains a or multiple -N-S bonds, one or more C=C bonds, one or more ring structures. The novel grafted antibacterial polypropylene of the present invention can be used alone as an antibacterial PP material, or can be blended with polypropylene as an antibacterial additive masterbatch, or multi-layer co-extruded with PP to greatly improve the antibacterial performance of the PP surface. The new grafted antibacterial polypropylene of the present invention has good adhesion to substrate PP, good antibacterial performance durability, excellent mechanical properties, and good high temperature stability. Due to the small amount of addition, it does not affect the mechanical properties of the base material, which solves the problem of the existing production process. There are problems such as poor antibacterial performance of PP products, easy precipitation and loss of antibacterial agents, and short antibacterial cycle. Moreover, the preparation process is simple, the cost is low, and the method has huge market application prospects and market value.

The invention belongs to a production method of high-boiling silicone oil and specifically relates to a production method for preparing high-boiling silicone oil by alcoholysis of an organosilicon high-boiling component. The production method comprises the following steps of: adding dropwisely excess alcohol into an organosilicon high-boiling component at room temperature, heating to 70-80 DEG C,and carrying out an alcoholysis reaction for 2-3 hours; adding dropwisely a little water into a reaction solution for continuous reaction; placing the reaction solution into an acid distributor and standing for layering to obtain crude acidic silicone oil and an alcohol acid solution; injecting the crude acidic silicone oil into a depickling reaction vessel for depickling to obtain a refined acidic silicone oil, injecting the refined acidic silicone oil into a neutralization reaction vessel for neutralization reaction, and filtering the neutralized reactant to obtain the high-boiling siliconeoil. A hydrogen chloride gas generated during the reaction is sent through an updraft ventilator to a water spray scrubber for absorption. The alcohol obtained after rectification and purification ofthe alcohol acid solution generated during the reaction is continuously applied in the alcoholysis reaction. The production method has advantages of low production cost, less amount of the neutralizer, high oil yield, stable product performance and controllable molecular weight, and is suitable for industrial production.

The invention relates to a preparing method for a doped carbon material of a super-capacitor, which comprises the following steps: mixing polyvinylidene chloride, strong base and strong polar solvent for obtaining a mixture; then grinding the mixture; after grinding, calcining the ground mixture in an inert gas; and then performing cleaning and drying for obtaining the doped carbon material. The strong base is alkaline-earth metal hydroxide, alkaline-earth metal oxide, zinc oxide, alkaline-earth metal amide, alkaline-earth metal sulfide, alkaline-earth metal nitride or alkaline-earth metal alkoxide. The strong polar solvent is N,N-Dimethylformamide, N,N-Dimethylacetamide, dimethyl sulfoxide or N-methyl pyrrolidone. The preparing method has advantages of low price and easy availability of raw material, low cost, simple preparing process, high safety and environment-friendly performance. The prepared carbon material has excellent double-layer capacitance and important popularization value.

The invention relates to a method for accelerating the surface charge dissipation of epoxy resin materials, belonging to the technical field of electrical material insulation. The method of the present invention comprises the following steps: step 1, assembling a dielectric barrier discharge plasma processing device; step 2, cleaning and drying the epoxy resin material; step 3, placing the cleaned and dried epoxy resin material in the lower barrier medium Above: the gas is fed through the air inlet, the discharge voltage amplitude of the high-voltage power supply is between 10kV ~ 30kV, and the frequency is between 500Hz ~ 3000Hz to generate a uniform and stable discharge, and the epoxy resin material is treated with discharge plasma, The processing time is 10s~10min. The method of the invention accelerates the surface charge dissipation of the epoxy resin material, has short processing time, and the device used is simple in structure, low in cost, does not need to use chemical reagents, and has little environmental pollution.

The invention discloses a new preparation method of O-methyl isourea methyl sulfate. The method includes the following steps that a certain amount of dimethyl sulphate is added in a 500-mL three-mouthreaction bottle, quantitative urea is added in batches, after reaction liquid is clear, a thermal insulation reaction is conducted for a certain time, and the product, namely O-methyl isourea methylsulfate, is obtained. Urea and dimethyl sulphate are adopted as raw materials for the reaction under the microwave effect to prepare O-methyl isourea methyl sulfate. The method has the advantages thatthe reaction can smoothly occur at the low temperature at which a conventional method is difficult to conduct, the reaction time is largely shortened, and the reaction efficiency and the product purity are improved; the temperature is controlled to be 45-70 DEG C, reduction of the reaction temperature not only can reduce the safety risk, but also can reduce side reactions in the production process, and the product yield is thus increased to 80%.

The invention discloses a preparation method of shape memory polyurethane based on lactide and 1, 4-p-dioxanone. The preparation method comprises the following steps of: firstly carrying out vacuum melting reaction on the 1, 4-p-dioxanone, stannous octoate and small molecule diol to generate hydroxyl-terminated polybutadiene (1, 4-p-dioxanone), carrying out vacuum melting reaction on the hydroxyl-terminated polybutadiene and the lactide as well as the stannous octoate to prepare the hydroxyl-terminated polybutadiene (lactide-co-1, 4-p-dioxanone), then reacting the hydroxyl-terminated polybutadiene with diisocyanate as well as the stannous octoate in a benzene solvent to generate prepolymer, and then reacting the prepolymer with an isopropyl alcohol solution of chain extender small molecule diol or small molecule diamine to prepare shape memory polyurethane. The invention adopts a tow-step method to prepare hydroxyl-terminated polybutadiene (lactide-co-1, 4-p-dioxanone), takes the benzene solvent as a pre-polymerization reaction solvent, introduces isopropanol as a cosolvent in the chain extension reaction, and can enhance reaction controllability, reduce by-product production, enhance product yield and obtain high molecular weight chain-shaped shape memory polyurethane with excellent shape memory performance.

The invention relates to a melamine dual-mode sensor based on Au-Fe3O4 composite nanoparticles and a preparation method thereof. The invention relates to the field of nuclear magnetic resonance sensing. First, oleylamine oleic acid on the surfaces of the Au-Fe3O4 composite nanoparticles is stripped through NOBF4; and a specific receptor unit modifies the surfaces of the composite nanoparticles stripped by NOBF4 under the strong coordination effect of an Au-S bond, thus obtaining target composite nanoparticles which can be used for preparing the melamine dual-mode sensor. Compared with prior art, the dual-mode sensor provided by the invention has the advantages that in the presence of melamine, dispersed-state nanoparticles are induced to aggregate so that the transverse relaxation time of water protons around the nanoparticles and the ultraviolet absorption spectrum of the nanoparticles are changed. According to the sensor, melamine is detected with both an ultraviolet absorption spectrum method and a nuclear magnetic resonance method; therefore, the sensor has the advantages of wide application range, high selectivity and high interference resistance. A method is provided for realizing fast application under different actual situations.

The invention relates to a preparation method of a 6-substituted furanyl-4-substituted aminoquinazoline derivative and a key intermediate thereof. 2-halo-5-cyanobenzoate and 3-chloro-4-(3-fluorobenzyloxy)aniline are used as raw materials, and 6-cyano-4-[3-chloro-4-(3-fluorobenzyloxy)phenyl]aminoquinazoline is obtain through an amidation reaction, a formamidine salt substitution reaction and a condensation reaction; then 6-(furan-2-yl)-4-[3-chloro-4-(3-fluorobenzyloxy)phenyl]aminoquinazoline or 6-(5-formylfuran-2-yl)-4-[3-chloro-4-(3-fluorobenzyloxy)phenyl]aminoquinazoline are obtained througha Grignard reaction and an acidification reaction; and then lapatinib or selatinib are prepared through a Mannich reaction or imidization and a reductive amination reaction. The preparation method hasthe advantages that the raw materials are cheap and are easily available, selectivity of the reaction is high, purity of the product is high, and industrial production is facilitated.

The invention relates to a method for preparing a heteroatom-doped carbon material at a room temperature. The method comprises the following steps: mixing a halogenated macromolecule and strong base with a strong polar solvent so as to obtain a mixture, grinding the mixture at the room temperature, and directly cleaning and drying after completion of grinding, so as to obtain the heteroatom-doped carbon material, wherein the halogenated macromolecule is polyvinylidene difluoride, polyvinylidene chloride or polyvinyl chloride, the strong base is alkali (earth) metal hydroxide, alkali (earth) metal alkoxide, alkali (earth) metal sulfide, alkali (earth) metal amides or alkali (earth) metal nitride, the strong polar solvent is N,N-dimethylformamide, N,N-dimethylacetamide, dimethyl sulfoxide or nitrogen methyl pyrrolidone and the room temperature refers to 10-40 DEG C. According to the method, the raw materials are cheap and easy to obtain, the operation is simple, safety is high and the method is very suitable for industrial expanded production.

The invention provides a preparation method of a 6-nitro-4-substituted aminoquinazoline derivative. The method comprises the following steps: carrying out an amidation reaction on 2-halo-5-nitrobenzoate and 4-(thiazole-2-yl)methoxy-3-chloroaniline in the presence of a catalyst to obtain N-[4-(thiazol-2-yl)methoxy-3-chlorphenyl]-2-halo-5-nitrobenzamide, and carrying out substitution and condensation reactions on the N-[4-(thiazol-2-yl)methoxy-3-chlorphenyl]-2-halo-5-nitrobenzamide and a formamidine salt through a one-pot process in the presence of an acid-binding agent to obtain 6-nitro-4-[4-(thiazol-2-yl)methoxy-3-chlorphenyl]aminoquinazoline. The method has the advantages of cheap and easily available raw materials, good raw material stability, high reaction selectivity, easiness in operation of the reactions, and high yield and high purity of the product.

The invention relates to a preparation method of cationic water-based polyurethane, leather back cover resin and leather coating, and belongs to the field of polymer material preparation. The present invention combines the quaternization neutralization reaction with the acid neutralization reaction, and at the same time further assists the Michael addition reaction for post-chain extension to improve the reaction degree of the cationic hydrophilic chain extender in the synthesis process, and prepares a soft The cationic water-based polyurethane of the aliphatic system, the yellowing resistance grade of the cationic water-based polyurethane is ≥3, the modulus is as low as 0.5-1MPa, the breaking strength is 5-10MPa, and the elongation is 1000-1500%; the cationic water-based polyurethane Polyurethane is added with other synergists to prepare the back cover resin. The back cover resin is sprayed on the leather and then heated and dried in a gradient to endow the leather cover with better flex resistance and flexibility. Leather sealant resin used.

The invention discloses a side chain type homogeneous anion exchange membrane and a preparation method thereof, wherein the structural formula of the side chain type homogeneous anion exchange membrane is as follows: The present invention firstly utilizes a dibromoalkane compound to react with an alkaline functionalization reagent to prepare a The basic functional monomer of Bian bromine group is then reacted with amino-containing polyphenylene phosphine oxide to obtain a side chain type anion exchange membrane. The anion exchange membrane prepared by the invention has the characteristics of controllable structure, high ion exchange capacity, high electrical conductivity, good chemical stability and the like, and can meet the needs of different application fields.