7results about How to "High recyclability" patented technology

The invention relates to the field of organic pigments, and discloses a preparation method and application of nano organic pigments with different crystal forms. The preparation method comprises the following steps: 1) dissolving an organic pigment crude product in a good solvent, and adding inorganic salt for activation; 2) dropwise adding a poor solvent at a gradient rate, adding a crystal form guiding agent, and inducing formation of a crystal nucleus; wherein the alpha crystal form directing agent is magnesium stearate; the beta crystal form directing agent is dibutyl phthalate; the gamma crystal form directing agent is polyethylene glycol; the initial gradient rate is 0.5-1 mL / min, and the gradient rate is increased by 0.2-0.3 mL / min every 8-12 min; 3) ultrasonic treatment; 4) cooling, and adding a surface modifier for surface modification; according to the preparation method, the nanometer organic pigment with the target crystal form can be accurately obtained through process regulation and control, the nanometer organic pigment is uniform in particle size distribution, good in dispersity, good in heat-resistant stability and high in color and luster strength, and the nanometer organic pigment has the advantages of being good in flocculation-resistant stability and weather resistance after a coating is formed.

The present invention relates to a food packaging material, to a method for producing a food packaging material and to the use thereof. The food packaging material of the present invention comprises (i) a paper substrate having a first side and a second side, the second side being opposite the first side wherein the paper substrate is impregnated with a composition comprising a grease barrier precursor, and (ii) a barrier layer coated onto at least the first side of the impregnated paper substrate, the barrier layer comprises a polymer wherein the total amount of perfluoroalkyl species and polyfluoroalkyl species in the packaging material does not exceed 20 ppm based on the total weight of the packaging material.

The invention belongs to the technical field of optical fiber communication, and particularly discloses an annular pump cavity multiplexing module and a broadband optical fiber amplification system thereof, specifically, a pump supply unit in the annular pump cavity multiplexing module provides a plurality of wave bands of pump light required by each optical fiber amplification module; the pump light coupling unit controls the transmission direction of pump light and splits the pump light, one part of the pump light enters the pump light circulating unit, and the other part of the pump light enters the pump distribution unit; the pumping distribution unit provides pumping light for each optical fiber amplification module according to wavelength and power; the pump light circulation unit compensates the absorption and loss of the pump light; and after the signal light of each optical fiber amplification module is amplified by the gain optical fiber, the pump light recovery unit recovers the residual pump light to the pump light coupling unit so as to be reused by the system. According to the broadband optical fiber amplifier, the cyclic utilization rate of the pump light is increased, fluctuation of the power of the pump light is reduced, and high-gain and low-noise integrated flat amplification of the broadband optical fiber amplifier can be achieved.

The present application belongs to the technical field of metallurgical engineering, and mainly relates to a method for wet mercury extraction from cinnabar based on composite leaching and modified resin adsorption. The method comprises the following steps: adding cinnabar concentrate into dilute sulfuric acid, filtering the impurity-removed cinnabar after stirring and reaction; mixing the impurity-removed cinnabar with a composite leaching solution, and stirring and leaching to obtain a mercury-containing complex solution; the composite leaching solution is a mixed solution of a complexing agent and ferric sulfate; after the mercury-containing complex solution is adsorbed by a modified thiourea type chelating resin, a mercury-containing desorption solution is obtained by desorption, and the mercury-containing desorption solution is subjected to electrolytic deposition to obtain metallic mercury. The method realizes efficient extraction of cinnabar reselected and flotation concentrate, recycling of waste water and harmless utilization of solid waste, and has significant advantages in leaching efficiency, environmental protection and raw material adaptability, and has broad industrial application prospects.

This invention relates to the field of foundation pit support technology, specifically proposing a combined steel pipe inclined support structure and construction method for deep foundation pits; it includes multiple support pipes, connecting plates, plug-in shafts, drive ends, and movable ends; flanges are provided at both ends of the support pipes; multiple support pipes are connected in series via connecting plates; an internal support frame is detachably installed inside the support pipe, and the plug-in shaft is rotatably installed on the corresponding internal support frame; the drive end is detachably fixed at the flange end of the left support pipe and is sleeved with the plug-in shaft inside the left support pipe; the movable end is axially sliding and adjustablely installed at the flange end of the right support pipe; the inclined support structure for deep foundation pits provided by this invention, through its quick disassembly and assembly design and internal reinforced support design, improves construction efficiency and ensures construction safety.

The utility model belongs to the field of traffic safety sign, concretely is a kind of environmental protection energy storage self-luminous traffic safety sign, including traffic safety sign main part, the front end of traffic safety sign main part is connected with light emitting component one, the inside of traffic safety sign main part is connected with light emitting component two, the lower end of traffic safety sign main part is connected with theftproof component;By setting light emitting component one, light storage type rare earth fluorescent layer can absorb light and store energy in daytime, self-luminous at night, light storage type rare earth fluorescent layer has no radiation, and the recycling rate of frame is higher, which can achieve good environmental protection effect, by setting light emitting component two, solar panel converts light energy into electrical energy, energy storage module is built-in lithium iron phosphate battery group and super capacitor, for solar energy power storage and adapt to cloudy and rainy day power supply, photosensitive sensor+microcontroller, combined with equipped priority charge-discharge circuit, can automatically switch power supply mode according to ambient brightness.

The application discloses a method for low-temperature interface dissociation and high-value material graded recovery of decommissioned crystalline silicon photovoltaic modules, comprising the following steps: S1, pretreatment; S2, opening treatment; S3, directional activation; S4, thermal auxiliary softening; S5, flexible peeling; and S6, graded recovery. The application adopts the coupling technology of interface activation and low-temperature thermal auxiliary softening, does not depend on high-temperature complete pyrolysis, significantly reduces energy consumption and pollution release risk, carries out layered peeling first, and then carries out material graded recovery, avoids glass, silicon wafer and metal mixing caused by direct crushing, can improve glass complete recovery rate, silicon wafer recoverable rate and silver copper recovery efficiency, integrates EVA detachment, material peeling, silver copper silicon collaborative recovery and pollution control into a complete process system, the process flow can be modularly designed, is suitable for large photovoltaic base surrounding regionalization processing and mobile pretreatment unit construction, and meets the needs of large-scale, low-carbonization and resourceization processing.