8results about How to "Change molecular structure" patented technology

According to the technical scheme, the device and method are characterized in that the device comprises a femtosecond stimulated Raman spectrometer body, supporting frames are fixedly installed on the two sides of the femtosecond stimulated Raman spectrometer body respectively, a side plate is arranged on one side of each supporting frame, a baffle plate is arranged on one side of each side plate, and the femtosecond stimulated Raman spectrometer body is fixedly installed on the other side of each supporting frame. The femtosecond stimulated Raman spectrometer comprises a femtosecond stimulated Raman spectrometer body, a supporting frame, a side plate, a shielding plate, a transparent plate, an operation column, a temperature rising frame, a heating wire, a blocking net, a metal net, a supporting frame and a micro fan which are matched for use; the femtosecond stimulated Raman spectrometer prevents the high-humidity environment from condensing water vapor on the surface of an optical element of the femtosecond stimulated Raman spectrometer body to influence light path transmission and signal intensity, and prevents the moisture content in a sample from being increased due to the increase of humidity, so that the molecular structure and the vibration mode of the sample are changed to influence generation and transmission of Raman signals.

The invention discloses a composite deodorizing agent and a preparation method thereof, the composite deodorizing agent is composed of the following components: a plant extraction component, the plant extraction component comprises a tea extract, a ginger extract, an oak leaf extract, a lavender extract, a licorice extract, a green persimmon extract, a pine bamboo extract and a schizonepeta extract; the microbial component comprises a proteolytic enzyme, an aldehyde hunting factor and nano diatomite; the auxiliaries comprise a stabilizer, titanium dioxide with a topological structure, syringol, a fermented rice product, an odor modifier, a chelating agent, an antioxidant, a plant preservative and a solvent. The deodorization effect of plants and microorganisms can be effectively integrated, the deodorization capacity after compounding is improved, and the safe and environment-friendly deodorization process is achieved.

The invention discloses a preparation method of long-chain branched modified polypropylene, and belongs to the technical field of high polymer materials. The invention discloses a preparation method of long-chain branched modified polypropylene, which is a water phase suspension method and specifically comprises the following steps: adding polypropylene, an acrylic acid n-alkyl ester monomer, an interface agent, a co-monomer, deionized water, an antioxidant and an initiator into a reactor according to a certain weight ratio; the preparation method comprises the following steps: swelling at a certain temperature for a certain time, then carrying out a reaction at a certain temperature for a certain time, and finally washing, extracting and drying. According to the invention, the acrylic acid n-alkyl ester is used as a monomer for long-chain branching modification of polypropylene, and the problem of low melt strength of polypropylene is solved. The method has the advantages of simple process, environmental protection, low cost, good processing effect and the like.

The application discloses a kind of water-based polyurethane adhesive materials and preparation method thereof, it is related to adhesive material preparation technical field.The component used in the application takes isocyanate, polycaprolactone dihydric alcohol PCL2000 as main raw material, 2,2-bis (hydroxymethyl) propionic acid and the like as hydrophilic chain extender, 1,4-butanediol as small molecule chain extender, triethylamine is neutralizing agent, and hydrophilic polyurethane prepolymer is synthesized, and low-temperature deionized water is added under high-speed shearing to synthesize water-based polyurethane adhesive.The water-based polyurethane adhesive material prepared in the application has high solid content, low water absorption, excellent tensile strength, bonding performance and anti-sagging property.

The present invention discloses a fuel energy-saving regulating device and an intelligent control method thereof, comprising: a magnetization processing module magnetizes fuel based on magnetization technology; a detection module detects the combustion efficiency of the magnetized fuel when it is burned in a boiler; a comparison module compares the combustion efficiency with a preset combustion efficiency threshold; a generation module generates a first instruction for detecting boiler equipment when the comparison module determines that the combustion efficiency is less than the preset combustion efficiency threshold; the first instruction is executed to obtain the detection result of the boiler equipment, and when the boiler equipment is determined to be normal according to the detection result, a second instruction for adjusting the magnetization parameters of the magnetization processing module is generated. The molecular structure of the fuel gas is effectively changed, so that the fuel is fully burned and the fuel has a higher performance, thereby effectively improving the heating efficiency, reducing the heating time, and achieving the purpose of reducing the use of fuel. Based on the more complete combustion of the fuel, the exhaust gas emissions of the combustion chamber are optimized, and the atmospheric pollution to the environment is reduced.

The present invention relates to a method for evaluating the quality of fresh food during storage period based on a modified color-sensitive sensor array. First, an MSNs@dye nano color-sensitive sensor array or a sensitized color-sensitive sensor array is prepared; then fresh food samples of different types and quality grades are selected, and the color-sensitive sensor array reacts with the fresh food samples to obtain characteristic variables of the color-sensitive unit, and a reverse neural network model for evaluating the quality of fresh food is constructed. Finally, the sample to be tested reacts to obtain the characteristic variables of the sample to be tested, and substitutes them into the reverse neural network model to complete the rapid evaluation of the quality of fresh food. The method for evaluating the quality of fresh food during storage period of the present invention uses a modified color-sensitive sensor array to detect fresh food, and cooperates to establish a dedicated reverse neural network model, and realizes rapid evaluation of the quality of fresh food by obtaining information on characteristic volatile components of fresh food, thereby solving the problems of complex detection process, strong subjectivity of results, low sensitivity and poor stability in the prior art.

The invention relates to a processing method and yarn for adjusting fiber arrangement structure by twisting and shaping. The invention adopts an immersion liquid feeding method to make the outer layer of filaments passing through a liquid feeding device carry solution, and the staple fiber strands are stretched by a stretching mechanism and then enter a primary twisting mechanism for twisting and shaping. The filaments carrying the solution are combined with the staple fiber strands through the primary twisting mechanism and enter a secondary twisting mechanism for twisting and shaping. The filaments are covered by the staple fiber strands under the twisting action and are arranged in a spiral shape under the torsion coordination of the staple fiber strands. After the twisting and shaping, the yarns are cured by a heat treatment device to shape the solution between the filaments and the staple fiber yarns, so that the twisting and torsion of the fibers are twisted and shaped, and at the same time, the surface fibers of the yarns are smoothed, the stress bonding between the filaments and the staple fiber yarns is enhanced, the inner and outer layer structures of the yarns are effectively regulated, the bonding effect between the fibers is greatly enhanced, and the yarn structure and yarn strength are improved.

This utility model relates to the technical field of cosmetic lotion pumps, and discloses a magnetized small molecule lotion pump for cosmetics. It includes: a lotion pump threadedly connected to the top of a lotion bottle; the lotion pump includes a pump cap housing and a pump nozzle; the pump cap housing contains a pressing component and a magnetizing component, the pressing component and the magnetizing component are internally connected, and the pressing component changes the internal pressure by pressing, forming a negative pressure to generate adsorption force; this utility model utilizes the unique closed-loop arrangement of the first permanent magnet component (four sets of permanent magnets connected in a positive-negative-positive-negative configuration) and a spiral channel design, built into the pump cap housing, to allow the lotion to fully receive the magnetic field during flow, effectively changing the molecular structure of the active ingredients in the cosmetic and enhancing their activity. After magnetization, the lotion molecules can more easily penetrate the stratum corneum of the skin and reach deeper into the skin's basal layer, significantly improving the penetration rate of the active ingredients.