172 results about "Dye absorption" patented technology

An ophthalmic system is provided. The system includes an ophthalmic material doped with a dye that absorbs light in a wavelength range and a layer that corrects a color imbalance caused by absorption of light by the dye. The dye can absorb light in a harmful spectral region, such as a narrow blue region. The color balancing layer may allow a user to have a color neutral view when using the system.

The invention discloses mixed liquor for preparing an elastic hydrophobic carbon nano tube and graphene compound aerogel. The mixed liquor consists of the following components in parts by weight: 0.1to 15 parts of oxidized graphene, 0.01 to 9 parts of carboxyl carbon nano tubes, 0.0001 to 0.1 part of a cross-linking agent, 0.0005 to 0.5 part of an alkaline reducing agent and 2000 parts of deionized water. The method for preparing the carboxyl carbon nano tube and graphene compound aerogel from the components comprises the following steps: (1) preparing a homogeneous water solution of oxidizedgraphene, carboxyl carbon nano tubes, the reducing agent and polymers; (2) preparing a carbon nano tube and graphene hydrogel through one-step hydrothermal reduction; and (3) carrying out dialysis and soaking treatment, and after drying, obtaining the carbon nano tube and graphene aerogel. According to the aerogel prepared in the invention, the mechanical property of the aerogel is improved, thespecific surface area of the aerogel is increased, and the aerogel can be used in the fields of dye absorption, catalytic carriers, variable resistors and the like; the density is just 1.2 to 15.8 mg/cm<3>, the hydrophobic angle is greater than 90 degrees, and the compression rate is 10% to 80%; and due to hydrophobic property and selective adsorption of the aerogel, the aerogel can be widely applied to treatment of oily wastewater and organic matter wastewater.

Sorting dissimilar materials, such as sorting plastics from wood, foam, or rubber. These systems and methods employ either dielectric heating or fluorescent dye absorption characteristics of materials to distinguish the materials. The systems and methods may employ differential dielectric heating and thermal imaging to sort wood, rubber, and foam, from plastic, metals, and other materials that do not undergo dielectric heating. Similarly, systems and methods may employ the greater liquid absorption properties of wood, rubber, and foam as compared to plastic. The dissimilar materials are subjected to fluorescent dye and carrier liquid, that is differentially absorbed by objects. Fluorescent imaging can be used to distinguish the materials. In either case, a computer-controlled system can be used to sort material types based on an evaluation of the thermal or fluorescent image.

The present invention is technological process of dyeing silk fabric with vegetable dye and belongs to the field of fabric producing technology. The technological process includes the following steps: degumming silk fabric biologically with enzyme, flushing with cold water, and winding; dyeing the degummed silk fabric through adding acetic acid to regulate pH value, adding neutral phosphate and mordant, adding tea lutein as vegetable dye and heating; cold water washing, soaping, hot water washing, cold water washing, stoving, pre-shrinking to set breadth, and winding or packing. The dyeing process has high dyeing homogeneity, high stability and less damage to silk fabric.

A coating composition and coating for ophthalmic lenses and other polymeric substrates having a unique combination of excellent solution stability, rapid cure rate, improved mar resistance, rapid dye absorption, and improved receptivity towards antireflective coatings. The coating comprises an abrasion resistant polymer and a dye-absorption-enhancing oligomer. The coating is tinted after curing with a dye to provide light absorbency in the coating.

The present invention discloses a fabric manufacturing process, which includes the procedures as follows: preparing raw materials, warping, weaving, after treatment, etc. The cation terylene provided by the present invention has the advantages of high dye absorption, good color permeability, good dyeing color fastness, bright color, soft luster and good moisture absorption. Surface combed cation terylene is fully woven and back combed polyurethane adopts 26 ditches and one gap, thus forming the pleasant strip effect. The finished product has good air permeability; the unique polyurethane hollow weaving process forms graceful horizontal strip and ensures the fabric has the unique characteristics of dense structure, thick hand feeling, appropriate stretch and modulus, etc.; the cation terylene yarn with good dyeing performance and dyeing permeability ensures that the color penetrates the interior of fabric. When the fabric is made into the printing swimsuit, the plush and the surface area of the same color even if the fabric pills due to multiple wear and abrasion of swimming wall and beach, thus prolonging the service life of the swimsuit.

The invention discloses a preparation method of dye-absorption fibers. The preparation method of the dye-absorption fibers comprises the steps that a cationic cellulose ether aqueous solution with the concentration of 5g/L-100g/L is prepared, an alkali compound is added to the cationic cellulose ether aqueous solution to adjust the pH value to be 11-13, viscose is put into the cationic cellulose ether aqueous solution to be reacted for 15-60 minutes at the temperature of 80-100 DEG C, and poly quaternary ammonium salt viscose is obtained; the poly quaternary ammonium salt viscose is taken out and dried, and then the dye-absorption fibers are obtained. The invention further provides a preparation method of dye-absorption non-woven cloth. The preparation method of the dye-absorption non-woven cloth comprises the steps that the dye-absorption fibers are provided; lapping is carried out on the dye-absorption fibers; net fixation is carried out on the dye-absorption fibers after lapping, and the cloth is obtained. By means of the preparation method of the dye-absorption fibers and the preparation method of the dye-absorption non-woven cloth, dye-absorption non-woven cloth with high absorption force and tearing resistance can be prepared.

A flexible dye-sensitized solar cell, an electrode of a flexible dye-sensitized solar cell and a method of manufacturing the flexible dye-sensitized solar cell are disclosed. The method of manufacturing the flexible dye-sensitized solar cell in accordance with an embodiment of the present invention includes: forming a separation layer on a carrier; forming a dye-absorption layer on the separation layer; forming a carbon-nanotube layer on the dye-absorption layer; forming a cathode polymer layer on the carbon-nanotube layer, in which the cathode polymer layer is flexible; and separating the carrier by removing the separation layer. Although the high temperature annealing process associated with the dye-sensitized solar cell is required, a flexible cathode transparent electrode can be manufactured by using the carbon nanotube, because the cathode can be manufactured by using the carbon nanotube and a flexible transparent board is used.

A device and a method are disclosed, by means of which microfilament yarns made of synthetic polymers can be produced with increased uniformity of the titer, dye absorption and improved physical yarn properties at increased production speeds by means of a spinning process with spinnerets of high hole density and a central cooling unit.

The invention relates to a method for preparing a dye-sensitized solar cell compound light anode with a zinc oxide nanometer structure, which adopts a one-dimensional zinc oxide nanowire array as an electronic transport layer, and a layer of multi-dispersed system zinc oxide microspheres is coated on the electronic transport layer and is used as a dye absorption and light scattering layer. The method comprises the following steps of: firstly, depositing a zinc oxide film on a FTO glass sheet by utilizing the sol-gel technology; secondly, growing a zinc oxide nanowire array on the zinc oxide film by adopting the hydrothermal self-assembly growth technology; and finally, coating a layer of multi-dispersed system zinc oxide microspheres grown by collochemistry self-assembly on the zinc oxide nanowire array to prepare the compound light anode with the zinc oxide nanometer structure, which has the advantages of low cost, simple process requirement, good repeatability, capability of performing large-scale preparation and high specific surface and light scattering properties.

The invention relates to a method for mensurating cytotoxicity of mainstream cigarette smoke. The method is characterized in comprising the following steps: firstly, a cultured cell is directly put to the mainstream cigarette smoke diluted by clean air and is exposed; secondly, the cell is subjected to neutral red staining; according to the situation that the cell is ingested with neutral red, a spectrophotometer of a readable porous culturing plate is utilized to mensurate an absorbance value; and the cell is compared with a contrastive sample exposed in the clean air, thereby judging the toxicity of the mainstream cigarette smoke. The method is based on a testing principle that the cultured cell is directly put to the mainstream cigarette smoke and is exposed; the level for ingesting the neutral red by the cell is in positive proportion to the number of viable cells; when the toxic effect of the mainstream cigarette smoke is larger, the survival cells exposed in the mainstream cigarette smoke is fewer, correspondingly the dye absorption amount is less and the absorbance value is lower. The method can quantitatively evaluate the cytotoxicity of a tested object, has the characteristics of simple operation, high sensitivity and reliable result, and creates a new method for mensurating the cytotoxicity of the mainstream cigarette smoke.

The invention relates to a technology for producing electric energy and hydrogen energy by using solar energy to induce, treat and reuse industrial waste liquids, which is mainly characterized that a photic anode is made of a semiconductor material which is absorbed with dyeing molecules and metal nanoparticles as a catalyst; a cathode material has a catalytic hydrogen production effect on hydrogen gas, the industrial waste liquids are taken as fuels, a saline substance is used as electrolyte, and the semiconductor material has photocatalysis property; and the dyeing molecules are a material which can be matched with the energy level of the semiconductor material, absorb sunlight and exist stably in the waste liquids. The invention integrates the concepts of a dye-sensitized solar battery and a fuel battery in the same battery device, dye is used for absorbing solar energy and converting the solar energy into electric energy, and organic matters in the industrial waste liquids can be degraded simultaneously to produce the hydrogen energy. The invention has the advantages of novel design, low cost, simple process and high energy conversion efficiency, and has important significance to energy saving and emission reduction in the industrial field.

The embodiment of the invention discloses a preparation method of a light anode of a flexible dye sensitized nano crystalline organic photovoltaic cell. The method comprises the following steps: dipping or spraying a uniform nano crystalline slurry on a flexible antioxidant metal wire mesh selected as a substrate, thus forming a nano crystalline thin film on the surface of the wire mesh; carryingout high-temperature heat treatment on the substrate attached with the nano crystalline thin film, thus preparing the metal wire mesh with the porous nano crystalline thin film; and then soaking the metal wire mesh with the porous nano crystalline thin film in a dye solution, thus realizing the dye sensitive effect on the nano crystalline thin film. The invention also discloses a light anode and a photovoltaic cell which are obtained according to the preparation method. According to the scheme provided by the invention, under the condition that the electric conductivity and transmission of light of the light anode can not be lowered, the DSSC (dye sensitized solar cell) has a flexible characteristic, and the nano crystalline thin film is subjected to high-temperature sintering treatment, thus the porous nano crystalline thin film is obtained, and the capability of dye absorption is improved, so that the assembled cell has the performance of higher photoelectric conversion efficiency.

The invention relates to an ultra-multiple-pore hydrogel for microbial fermentation and a preparation method and application thereof. The preparation method includes: (1) preparing gel pre-polymerizing liquid; (2) rehydration activation of dried yeast; (3) preparation of ultra-multiple-pore gel; and (4) purification of the ultra-multiple-pore gel. The theory is that after rehydration activation of the dried yeast, fermentation reaction is conducted in the gel to generate carbon dioxide, so that the effect of the foaming agents is played to generate the ultra-multiple-pore gel. The ultra-multiple-pore hydrogel is combined with the fermentation technology of microorganisms, can achieve non-toxic and harmless production and production efficiency of the porous gel preparation process, has generality and universality and can be applied to the field of dye absorption, heavy metal ion enrichment and recovering, drug carriers and biomedicine support materials.

The invention belongs to the field of functional materials and discloses nano titanium dioxide/graphene oxide composite material and a preparation method and application thereof. The preparation method includes: allowing solid graphene oxide to react with deionized water, anhydrous ethanol and nano titanium dioxide, and performing filtration and air drying regeneration to obtain the nano titanium dioxide/graphene oxide composite material. The nano titanium dioxide/graphene oxide composite material prepared by the method has the advantages that the composite material is large in specific surface area and high in photocatalytic efficiency, the dye absorption performance of the composite material is increased greatly as compared with that of nano titanium dioxide, and the composite material is evident in absorption effect on low-concentration dye (<100mg/L) especially. The preparation method is simple in preparation process and easy to operate.

The invention provides a method for preparing porous spherical titanium dioxide and a method for preparing a dye solar cell light positive pole from porous spherical titanium dioxide prepared by the method, and a dye-sensitized solar cell prepared from the dye solar cell light positive pole. The prepared porous spherical titanium dioxide can be used as a dye absorption carrier in the electrode ofa dye-sensitized semiconductor, is large titanium dioxide particles with porous structures, and has the characteristics of P25 and submicron titanium dioxide. In the method, the porous spherical titanium dioxide is prepared by taking cetylamine as a structural guiding agent, and ammonia water as a surface aperture regulator; and the raw materials are easily obtained, the method is easy to operate, the energy consumption is low and the repeatability is high. Compared with a battery prepared from the conventional P25 titanium dioxide, the prepared porous spherical titanium dioxide has a large specific surface area and high photochemical stability, improves the dye absorption efficiency and electron transport efficiency by over 50 percent, and is suitable for the research of high-efficiency dye batteries.

The invention relates to the field of development and utilization research of new energy resources, and in particular relates to a method for preparing an efficient compound light anode of a dye sensitized solar cell. The method comprises the following steps: firstly depositing a ZnO thin film doped with In on a transparent substrate by utilizing a magnetic control sputtering technology; then growing a ZnO nanowire array on the ZnO thin film doped with In by adopting a hydrothermal chemistry reaction method; and finally coating a layer of TiO2 nano particle dispersion solution on the surface of the ZnO nanowire array through a silk screen printing technology, and heating the dispersion solution to enable an organic solvent in the dispersion solution to volatilize, thus obtaining a hole-shaped TiO2 nano crystalline porous membrane/ZnO nanowire array compound light anode structure. Each TiO2 nano particle mainly comprises small particles with the diameter about 10 nanometers, and simultaneously a small quantity of large particles with the diameter about 200 nanometers are dispersed; and the compound light anode can be used for not only improving the photosensitive dye absorption capacity and the light capture efficiency, but also improving the transport capability of photoproduction electrons, and improving the photoelectric conversion efficiency of the dye sensitized solar cell.

The invention relates to a preparation method for a high-strength dual-network hydrogel capable of rapidly responding to both a pH value and temperature. The preparation method comprises the following steps: (1) dissolving temperature-sensitive monomer, pH-sensitive monomer and inorganic cross-linking agent modified nanometer clay in water together, placing the obtained solution in a container, carrying out stirring in an ice bath with a temperature of 0 DEG for 60 min under the protection of nitrogen until the solution is uniform and transparent, then adding an aqueous solution of a silica network precursor and continuing stirring for 30 min until the obtained mixture is uniform and transparent; (2) adding an aqueous solution of a redox initiator and a catalyst, carrying out uniform mixing under stirring, introducing nitrogen for 5 min and pouring the obtained mixture in a die with a certain shape; (3) subjecting the die to a reaction at 20 DEG C for 30 min and then to a reaction at -28 DEG C for 24 h; and (4) taking the product out and carrying out repeated water changing and soaking so as to obtain the finished hydrogel. The hydrogel prepared in the invention has obvious dual response to temperature and the pH value, excellence strength and an ultra-fast response rate; moreover, raw materials used in the invention are cheap; the preparation method is simple; and the hydrogel is expected to be used in fields like drug sustained release and dye absorption.

The present invention relates to a process of a vegetable dye to dye purified cotton knitting fabric, in particular belongs to the textile technical field. The present invention is characterized in that the purified cotton knitting fabric biological enzyme scouring pre-treatment is as follows: the purified cotton knitting fabric is washed with hot water and cold water after being scoured; the subsequent mordant dyeing treatment is as follows: mordant dyeing and vegetable dyeing are performed for the purified cotton knitting fabric after being treated through the biological enzyme scouring; the purified cotton knitting fabric is batched or packed through cold water washing, hot water washing, drying, conventional pre-shrinking and constant breadth. The present invention uses the biological enzyme scouring pre-treatment purified cotton knitting fabric, thus effectively ensuring the subsequent dyeing, improving the stability of the color uniformity and the product quality of the final products, and laying a foundation for the subsequent mordant purified cotton knitting fabric; the vegetable dyeing performance and the quality of the purified cotton knitting fabric after being dyed are improved, for example, the dye absorption rate is improved, the dyeing uniformity and the dyeing stability are improved, and the damage of the purified cotton knitting fabric is reduced.

The invention discloses a heterostructure photoanode for a dye-sensitized solar cell, comprising conductive glass and a dye absorption layer coated on the conductive glass. The dye absorption layer is a TiO2-semiconductor heterostructure film, wherein a primary structure is TiO2 nano-fiber or/and TiO2 nano-tubes, and a secondary structure is at least one of semiconductor nano-particles, semiconductor nao-rods and semiconductor nano-wires constructed by semiconductor nano-fiber or/and semiconductor nano-tubes, namely that 1-D heterostructure nano-material as the dye absorption layer of the photoanode of a dye-sensitized solar cell. The combination of the structural characteristics of 1-D nano-size and the polarization property of galvanic couple formed by TiO2/semiconductor composite system interface can enhance the transmission and the separation of electric charges and improve the electronic transmission efficiency; meanwhile, a huge specific surface area can effectively improve the amount of dye absorption and the light utilization efficiency and further improve the photoelectric transformation efficiency of the dye-sensitized solar cell by 10 percent.

The invention discloses an oxidized graphene-rhamnolipid composite material which is black gray powder and is of a laminar multi-hole nano structure. The invention further discloses a preparation method of the composite material. The preparation method includes the following steps that oxidized graphene is added into a dispersing agent, and oxidized graphene mixed liquor is formed after ultrasonic dispersion; rhamnolipid, 1-ethyl-(3-dimethyl amino propyl) carbodiimide hydrochloride and 4-dimethylamino pyridine are added into the mixed liquor, then the ultrasonic reaction is performed, and a certain amount of absolute methanol is added and mixed for generating sediments; the sediments are washed and centrifuged, and finally the oxidized graphene-rhamnolipid composite material is prepared through vacuum freeze drying. The invention further relates to application, in aspect of cationic dye absorption, of the composite material prepared through the method. The prepared composite material is low in biological toxicity and not prone to agglomeration, the preparation method is simple and easy to carry out, and in the process of the cationic dye absorption, the prepared composite material has the advantages of being free of secondary pollution and enabling solids and liquids to be separated easily.

The invention discloses a rice husk adsorbent for dye absorption. The invention is characterized in that (1) 100g rise husk is prepared, the sediment impurity is removed, and the rise husk is crushed into 20mesh, (2) 25ml-45ml sulfate with concentration 4.5%-8.5%(w/v) is adopted as activator, and the rise husk is activated for 45-75min at the activation temperature of 110-150 DEG C, and (3) 20ml-50ml hydrogen peroxide with concentration 6.0%-18%(w/v) is adopted as oxidative activator, sulfate is added to adjust pH value below 6.0, and the rise husk is activated for 40-80min at the activation temperature of 170-200 DEG C. The rice husk adsorbent for dye absorption has the advantages of adopting the waste rice husk as basic material, relatively ideal absorption selectivity and quantity, good absorption performance with absorption rate above 50%, and low cost.

A multi-layer dye-scavenging article for use in hand or machine washing systems is disclosed. More specifically, a multi-layer article for the introduction of dye absorbing, dye transfer inhibiting and/or other detergent active materials into an aqueous wash system is disclosed.

The invention relates to a preparation method of a fullerene-doped titanium dioxide visible-light-driven photocatalyst. The method comprises the following steps: in the presence of nitrogen, reacting fullerene C60, p-carboxy benzaldehyde and sarcosine in an organic solvent for 8-10h at the temperature being 100-115 DEG C, and performing separation and purification to obtain carboxyl group functionalized fullerene derivatives; and dispersing the carboxyl group functionalized fullerene derivatives and titanium dioxide in absolute ethyl alcohol, performing ultrasonic dispersing, performing rotary evaporation, and performing vacuum drying to obtain the fullerene-doped titanium dioxide visible-light-driven photocatalyst. The method disclosed by the invention is simple, the prepared photocatalyst has the good dye absorption capacity and visible-light catalytic activity; under the illumination of a xenon lamp, the prepared photocatalyst can be used for highly efficiently degrading rhodamine dye and has an important application prospect in waste water decoloration treatment in printing and dyeing industry.

The invention discloses a polyester fabric production method. The method includes the following steps: (1), selecting raw materials, namely selecting 30D/36F semi-gloss polyester filaments as warp and selecting 50D/72F polyester filaments as weft; (2) inspecting the raw materials; (3), performing doubling, reeling, two-for-one twisting, natural shaping and drafting on qualified warp, and performing reeling, two-for-one twisting, shaping and rewinding on qualified weft; (4), weaving; (5), inspecting fabric; (6), bleaching and scouring; (7), dyeing; (8), rinsing and drying. The polyester fabric production method is simple; dispersible cationic dye is adopted for dyeing, so that the defect of high-temperature dyeing of common polyester fabric is overcome, and dyeing can be performed at normal temperature; dye absorption performance of fibers is greatly improved, crystallinity is lowered, dye molecules are enabled to be prone to permeation, the fibers are enabled to easy to dye, and dye absorption rate is increased.

The invention discloses a method for preparing a high-homodisperse zinc sulfide graphene composite material. The method comprises the steps that first, graphene oxide is added into dimethylsulfoxide solvent, ultrasonic dispersion is conducted, then a zinc source and an appropriate amount of surface active agent are added, stirring is conducted until the zinc source and the surface active agent are completely dissolved, the solution is transferred into a polytetrafluoroethylene lining reaction still, solvothermal reaction is conducted for 12-20 h at the proper temperature, acetone and ethyl alcohol are used for cleaning up a sample, and a final product is obtained after drying. According to the method, a simple one-step solvent thermal synthesis method is adopted, the cost is low, good repeatability is achieved, zinc sulfide nano-particles can be distributed on graphene in a highly uniform mode, and the synthetic composite material can be widely applied to the fields of photocatalysis, solar cells, dye absorption and the like.