5results about How to "Process environment friendly" patented technology

The invention discloses a medium-temperature ink-jet printing composite material based on a molding powder printing layer, a preparation method of the medium-temperature ink-jet printing composite material and application of the medium-temperature ink-jet printing composite material in building decoration, automotive trim, household appliance appearance or electronic device shell. The medium-temperature ink-jet printing composite material comprises a base material layer, a molding powder printing layer and an ink-jet printing layer, the molding powder printing layer is formed by electrostatically spraying a molding powder material and heating, melting and crosslinking, one surface of the molding powder printing layer is connected with the base material layer, and the other surface is connected with the ink-jet printing layer; the molding powder material comprises thermosetting resin, thermoplastic resin and a curing agent; and the ink-jet printing layer is formed by drying and curing at 150-300 DEG C after medium-temperature curing ink-jet ink is jetted. On the premise of not depending on a high-temperature firing process, stable combination of the medium-temperature ink-jet printing layer on various inert substrates is realized, and the method has the advantages of low energy consumption, wide substrate application range, high process compatibility and the like, and is suitable for industrial popularization and application.

This invention relates to the field of harmless treatment technology for oily sludge, specifically to a method for preparing carbon quantum dots from oily sludge. Conventional methods for preparing carbon quantum dots from oily sludge have limitations in yield and fluorescence intensity. To address these issues, this invention provides a method for preparing carbon quantum dots from oily sludge. Considering the complex composition of oily sludge, this invention designs a multi-stage purification process chain of "ultrasonic extraction—water washing—Soxhlet extraction—acidification treatment." Each step works synergistically, purifying the sludge step by step to ultimately obtain a high-purity refined organic carbon source. The refined organic carbon source removes impurities through gentle solvent extraction and acid washing, maximizing the preservation of the organic carbon source's chemical activity and structural integrity. In the hydrothermal reaction, it can be effectively converted into carbon quantum dots, avoiding carbon source loss or activity reduction due to over-processing, thus further improving the yield and fluorescence intensity of carbon quantum dots.

The invention provides a spectral selective super-hydrophobic photovoltaic gain coating as well as a preparation method and application thereof, and belongs to the technical field of coatings. The coating comprises 45%-65% of a water-based resin matrix, wherein the water-based resin matrix is a hybrid emulsion formed by fluorosilicone modified acrylic resin and a hydroxyl-terminated aliphatic polyurethane prepolymer; 5%-10% of an infrared reflection nanometer material; 3%-6% of hydrophobic nanoparticles; 1%-3% of a dispersant; 1%-3% of a silane coupling agent; 0.5%-2% of a stabilizer; 0.5%-1.5% of a rheological additive; 0.2%-0.5% of an organic silicon defoaming agent; and the balance of water. According to the invention, a spectral selective thermal management function and a super-hydrophobic self-cleaning function are deeply fused in a water-based coating system on a micro scale, so that the efficiency of the component is improved from two dimensions of reducing light loss and heat loss, and the durability and environmental friendliness of the coating ensure the reliability of long-term application of the coating.

The invention discloses a method for preparing cyclohexyl 1-ethyl acrylate by a one-pot method, cyclohexanone (compound III) is used as a raw material, the cyclohexyl 1-ethyl acrylate (compound I) is prepared by the one-pot method, active anhydride is generated in situ through acrylic acid and di-tert-butyl dicarbonate, then the active anhydride and an intermediate 1-ethyl cyclohexanol (compound II) are esterified, and the cyclohexyl 1-ethyl acrylate is obtained. The content of impurities generated in the reaction can be obviously reduced. The method is wide in application range and simple and efficient in process, the gas phase purity can reach 99.7%, the whole process is environmentally friendly, and the method is suitable for large-scale production and has good industrial application prospects.

The application belongs to the field of green manufacturing, and discloses a preparation method of a pyridazine compound, comprising the following steps: (1) adding an enzyme catalyst, a bio-based furan and a co-substrate into a buffer solution to react, and removing cells after the reaction; (2) adding hydrogen peroxide or an oxidase and a titanium-silicon molecular sieve to react, and removing the titanium-silicon molecular sieve after the reaction; (3) slowly adding hydrazine under stirring at 0-60 DEG C to obtain the pyridazine compound after the reaction; the enzyme catalyst is at least one of the following: an alcohol dehydrogenase / glucose dehydrogenase double enzyme system, an alcohol dehydrogenase / formate dehydrogenase double enzyme system and a recombinant bacterium co-expressing one or both of the above two double enzyme systems. The application has the advantages of high selectivity, mild reaction conditions, environmental friendliness, fast reaction speed and no need for intermediate separation and purification.