92 results about "Hydraclear" patented technology

The invention provide a method for making silicone hydrogel based on the Lightstream Technology from a monomer mixture with a curing time of less than about 100 seconds. The present invention is also related to silicone hydrogel contact lenses made according to methods of the invention.

The invention relates to a silicone adhesive composition. The silicone adhesive composition comprises, by mass, 100 parts of a low-viscosity silicone adhesive, 0.1 to 1 part of polydimethylsiloxane, 0.2 to 2 parts of a platinum catalyst, 0.05 to 0.5 part of polyether modified polydimethylsiloxane and 50 to 100 parts of an organic solvent. The invention also relates to an optical double-sided tape employing the silicone adhesive composition and used for a toughened glass protection film, and a preparation method thereof. Compared with the prior art, the optical double-sided tape provided by the invention can effectively overcome difficulty is bubble elimination during applying, enables an applied surface not to generate water ripple bubbles and snowflake bubbles and greatly improves the integral appearance and usage effect of the toughened glass protection film.

The invention belongs to the eyewear industry and particularly relates to a machining technology for a slender molded contact pin of a glasses leg. A system for machining the slender molded contact pin of the glasses leg is adopted to perform a series of fine machining including plane abrasion, polishing and the like on all parts of a product. The machining process and system are simple, and the machining method is feasible and can guarantee technical requirements. Not only is the problem that a domestic contact pin is difficult to guarantee the technical requirements solved, but also the machining difficulty and the production cost are reduced. More enterprises in China can produce the product that meets the technical requirements. Thus, the product is more competitive in the market.

The invention belongs to the technical field of after treatment of nuclear fuel, and discloses a determination method of hydrazinium mononitrate and hydroxylamine nitrate. The method utilizes a near infrared spectrum method to determine the hydrazinium mononitrate and the hydroxylamine nitrate. The key points of the determination method are that the wavelength range is 1532nm-1656nm, the sweep integration time is 0.5-0.6ms, the optical path length is 2-3mm, and water or air is used as reference. The determination method disclosed by the invention has the characteristics of simpleness, high efficiency and capability of simultaneously determining the contents of the hydrazinium mononitrate and the hydroxylamine nitrate.

The invention discloses a silicon hydrogel with medium water content and high oxygen permeability and a silicon hydrogel contact lens; and the silicon hydrogel is prepared by polymerization reaction of the following components, by mass: 10-60% of silicon-containing monomer, 10-60% of hydrophilic monomer, 0.1-10% of cross-linking agent, 0.1-10% of initiator and 30-60% of solvent. The silicon-containing monomer is one or a mixture of more than one of MCR-M11, TRIS, SIMAA2 and SIGMA. The hydrophilic monomer is one or a mixture of several of HEMA, NVP, methacrylic acid, methyl methacrylate and polyethylene glycol methacrylate. The preparation method comprises the following steps: uniformly mixing and stirring the components according to the formula ratio, injecting the mixture into a contact lens mold, and carrying out ultraviolet irradiation or thermal initiation polymerization to obtain the silicone hydrogel contact lens. Compared with the prior art, the silicon hydrogel provided by theinvention is medium in water content and large in oxygen permeation coefficient, and the contact lenses prepared from the silicon hydrogel are high in transparency, good in oxygen permeation and soft,meet the requirements of wearing comfort and formability of the contact lenses, and have good market prospects.

The invention is generally related to a method for producing, in a relatively efficient and consistent manner, embedded or hybrid silicone hydrogel contact lenses, and also to unprocessed embedded or hybrid silicone hydrogel contact lenses, according to conventional cast-molding technologies. A method of the invention involve use of a polymeric non-reactive diluent in preparing a polymerizable composition for forming the silicone hydrogel material of the unprocessed embedded or hybrid silicone hydrogel contact lens, which is cast-molded with a lens mold. The unprocessed cast-molded embedded or hybrid silicone hydrogel contact lens has no or a minimal water-swelling degree, so that lens distortion or delamination during the hydration of the unprocessed embedded or hybrid silicone hydrogel contact lens.

The invention discloses an adhesive composite wear-resistant super-hydrophobic coating and a preparation method thereof. The adhesive composite wear-resistant super-hydrophobic coating is obtained by coating a rigid substrate with an adhesive and then pressing in nano silicon dioxide. The rigid substrate is glass. The adhesive is one or more of silicone rubber, water-based paint, water-based adhesive sticker, 502 glue and epoxy resin AB glue. The prior art generally has the problems of environmental pollution, complex process, high cost and the like, cannot realize large-scale preparation, and is mostly limited in an ideal research environment of a laboratory. According to the invention, HMDS is used as a modifier, super-hydrophobic SiO2 particles are prepared under a fluorine-free condition, an adhesive is introduced as an auxiliary coating, the composite super-hydrophobic coating with high mechanical strength is prepared, and the adhesive, a preparation process and a wear resistance enhancement mechanism are analyzed and researched.

The invention relates to a preparation technology of an artificial compound eye, in particular to a preparation method of a PDMS (Polydimethylsiloxane) material artificial compound eye. The PDMS material artificial compound eye is prepared by adopting a PDMS-silicone oil swelling method, and the method comprises the following steps: 1) cleaning a sample; 2) through femtosecond laser modification, an ablation crater is formed on the surface of the curved glass substrate; (3) a curved surface wet etching process is carried out, and a curved glass compound eye template is formed through ultrasonic water bath chemical corrosion; 4) preparing an artificial compound eye structure of the PDMS material through a reverse mold; and 5) preparing the artificial compound eye made of the PDMS material through a PDMS-silicone oil swelling method. The problems that an artificial compound eye surface structure prepared in the prior art is poor in durability, prone to losing hydrophobic capacity and insufficient in anti-fog capacity are solved, and the artificial compound eye prepared through the method can meet the transparency requirement and has the waterproof and anti-fog capacity and good durability at the same time.

The invention discloses high-hydrophilicity organic silicon hydrogel, a corneal contact lens and a preparation method, and the high-hydrophilicity organic silicon hydrogel is prepared by polymerization reaction of the following components in parts by weight: 20-40 parts of a polysiloxane monomer, 10-60 parts of a hydrophilic monomer, 0.5-6 part of a cross-linking agent, 0.3-1.5 parts of an initiator and 20-50 parts of a solvent. According to the formula, a silicon synthetic material SIGMA and/or TRIS and/or DHS8015 is used as a silicon-containing organic matter, the problem that in the prior art, a silicon monomer and a hydrophilic monomer are insoluble is solved, the hydrophilicity of the silicon hydrogel is improved, the prepared silicon hydrogel corneal contact lens is brighter, and thesilicon hydrogel has high oxygen permeability and high water content and can be used as a corneal contact lens. Therefore, the silicone hydrogel corneal contact lens is more comfortable to wear.

The invention discloses a pair of anti-falling glasses, and relates to the technical field of glasses. The anti-falling glasses comprise a glasses frame and two glasses legs arranged on the glasses frame, wherein an auxiliary strip is connected between the two glasses legs, and the glasses frame and the two glasses legs form a ring shape for sleeving the head of a wearer. By arranging the auxiliary strip, the situation that the glasses fall off is reduced, the anti-falling effect is improved, and the glasses are more stable to wear.

The invention belongs to the technical field of coatings, and particularly relates to a composite organic silicon coating as well as a preparation method and application thereof. According to the composite organic silicon coating as well as the preparation method and application thereof in the invention, the composite organic silicon coating comprises hydroxyl silicone oil, dimethyl silicone oil, inorganic filler, flame-retardant powder, a cross-linking agent and a catalyst, wherein the hydroxyl silicone oil comprises first hydroxyl silicone oil and second hydroxyl silicone oil, the viscosity of the first hydroxyl silicone oil is 1000-1500 cps, the viscosity of the second hydroxyl silicone oil is 20000-30000 cps, and the first hydroxyl silicone oil with low viscosity can improve the compatibility of the second hydroxyl silicone oil with high viscosity and the inorganic filler, so the coating is more compact and not easy to crack. Therefore, the technical problem that the corrosion resistance of organic silicon coatings in the prior art needs to be improved is solved.

The invention relates to the technical field of ophthalmic dosage forms and medical materials, and relates to a voriconazole-coated carrageenan corneal contact lens which is prepared by the following components according to the content: sequentially adding a silver salt aqueous solution and a voriconazole solution into a carrageenan aqueous solution, wherein the mass volume ratio of the carrageenan aqueous solution to the silver salt aqueous solution to the voriconazole solution is 10 g: (5-15) microliter: (7-13) microliter, the mass percent concentration of the carrageenan aqueous solution is 0.99-10%, the voriconazole solution is a voriconazole DMSO solution with the mass concentration of 0.1-5 mg/microliter, and the silver salt aqueous solution is a silver nitrate aqueous solution with the molar concentration of 0.1 mol/liter; the added silver ions can promote gelation of carrageenan, and the silver elementary substance can kill fungi, so that the dosage of voriconazole is reduced, the drug release time can be prolonged to 24 hours, the frequency of eye administration is reduced, the local eye stimulation symptom is relieved and the treatment effect on fungal keratitis is improved.

The invention relates to a hydrazone organic matter-based mode-locked pulse light source and a preparation method thereof, and mainly relates to the technical field of lasers. A 1-(anthracene-9-methylene)-2-(pentafluorophenyl) hydrazine organic matter A is set as a saturable absorption material. The laser intensity before mode locking changes randomly, and a saturable absorber can be transmitted out when the randomly generated light intensity is large enough to oscillate in a laser cavity. The process is repeated continuously, so that the high-intensity laser is amplified, and the low-intensity light is absorbed. After multiple times of oscillation, the pulse is gradually compressed, so that the width of the output pulse is reduced, and a traditional soliton with the pulse width of only 1.13 ps is obtained. And the organic matter can exist in the air for a long time, so that the laser outputs stably, the service life of the ultrashort pulse fiber laser is prolonged, and the investmentcost is reduced.

The present invention discloses a composite hydrogel contact lens material preparation method, and relates to the technical field of glass production. The composite hydrogel contact lens material preparation method comprises four processes such as raw material mixing, heating reaction, impurity removal and drying. According to the present invention, in the process method, NVP particles having water absorbency of 7-8 are uniformly dispersed in a HEMA matrix phase having water absorbency of 1.6-1.7 by using a solution polymerization method to make the two materials form the composite structure hydrogel cornea contact lens material having the phase interface layer, and during the preparation process, the reaction temperature and the reaction time are controlled to make the two material be subjected to the complete reaction; and the lens material prepared through the preparation method has characteristics of high transparency, good mechanical property, low expansivity, high health value, and high medicinal value.

The invention discloses a sensor for hydrazine detection, a nitrogen-doped porous carbon loaded copper-cobalt nano composite material and a preparation method and application thereof, and belongs to the technical field of inorganic material synthesis. According to the nitrogen-doped porous carbon loaded copper-cobalt nano composite material, nitrogen-doped porous carbon NPC serves as a substrate material, Cu and Co nano particles are loaded on the surface of the NPC, and the NPC is of a polyhedral hollow structure; the preparation method of the composite material comprises the following steps:adding soluble copper salt, cobalt salt and an adhesive into a nitrogen-doped porous carbon material, reacting, and carrying out liquid-phase reduction on hydrazine hydrate in a hydrothermal system.The composite material can be used as a modifier to realize high-sensitivity and high-selectivity electrochemical quantitative determination of hydrazine, and has the advantages of favorable dispersity, low consumption, simple preparation method, mild reaction conditions and low energy consumption.

The invention discloses a temperature self-adaptive intelligent window and a preparation method thereof, and belongs to the technical field of functional materials. The temperature-adaptive intelligent window contains temperature-sensitive hydrogel, and the temperature-sensitive hydrogel comprises the following components in percentage by weight: 1 to 20 percent of temperature-sensitive monomer, 0.001 to 0.1 percent of emulsifier, 0.005 to 0.2 percent of cross-linking agent, 0.01 to 0.5 percent of initiator and the balance of water, wherein the total amount of the temperature-sensitive hydrogel is 100 percent; and the thickness of the temperature-sensitive hydrogel is 1 to 2 mm. The temperature self-adaptive intelligent window shows different light transmittances at different temperatures, the low critical phase transition temperature value of the temperature self-adaptive intelligent window is close to the room temperature, the temperature self-adaptive intelligent window is suitable for being used at the room temperature, and the speed of the light transmittances changing along with the temperature is high.

The invention belongs to the technical field of hydrophobic materials, and particularly relates to a hydrophobic treatment agent and a preparation method and application thereof, and wear-resistant self-cleaning glass and a preparation method thereof. The hydrophobic treatment agent provided by the invention has a perfluoropolyether compound containing a triethoxy silane group which can be bondedwith a silicon hydroxyl group, so formation of an organic-inorganic hybrid structure in the application process is facilitated, then the perfluoropolyether compound is anchored to the surface of glass, and the wear resistance of the hydrophobic surface of the glass is greatly improved; meanwhile, the glass surface is endowed with the characteristic of low surface energy, so the glass surface has the characteristics of excellent full lyophobicity and pollution resistance. Test results show that the wear-resistant self-cleaning glass obtained by coating of the hydrophobic treatment agent provided by the invention can be effectively isolated from various organic solvents; and after friction 200,000 times under a pressure of 100 kPa, a contact angle between the surface and water can still be kept at 105 degrees or above, and excellent wear resistance is achieved.

The invention discloses a silicone oil modified anti-dazzle anti-reflection coating solution, a preparation method and application, and relates to the technical field of solar glass. The silicone oil modified anti-dazzle anti-reflection coating solution provided by the invention contains modified hydroxyl silicone oil sol, a pore forming agent, a silane coupling agent and a diluent. After the surface of glass is coated to form a film through a roller coating coating process, particles in the modified hydroxyl silicone oil sol can form a micro-convex structure in a film layer, so that the glass has an anti-dazzle effect. The coating solution is prepared by adopting a chemical synthesis method, is suitable for a roll coating process with the highest film coating efficiency, is simple to process and does not need to adopt an atomization spraying mode; and multiple layers of films do not need to be additionally plated, so that the production efficiency can be improved and the production cost can be reduced.

The invention relates to the technical field of modified silicone rubber, in particular to a foamed silicone rubber core material and a foamed thermal insulation buffer composite material. Raw materials of the foamed silicone rubber core material can comprise methyl vinyl silicone rubber, white carbon black, a flame retardant, hydroxyl silicone oil, heat insulation powder, a heat stabilizer, a foaming agent and a vulcanizing agent. The foamed silicone rubber core material provided by the invention has excellent buffer performance, flame retardant performance and heat insulation performance. Due to the lamellar space structure of an outer inorganic mica layer, the outer inorganic mica layer has excellent heat insulation performance, so that the composite material also has excellent heat insulation performance.

The invention discloses a method for preparing a zinc sulfide photoelectric film from zinc chloride, and belongs to the technical field of solar cell films. The method comprises the following steps: firstly, cleaning a tin dioxide conductive glass substrate; secondly, putting C6H5Na3O7.2H2O, ZnCl2 and Na2S2O3.5H2O into distilled water, obtaining a precursor film on the conductive glass substrate with an electrodeposition method, naturally drying, putting the dried precursor film into a tubular furnace in which hydrazine hydrate is added, enabling a precursor film sample not to be in contact with hydrazine hydrate, and performing heating in the sealed tubular furnace to vulcanize the precursor film, wherein sublimed sulfur powder is added in hydrazine hydrate; and finally, taking out the sample and performing drying to obtain the zinc sulfide film. The method does not need a high-vacuum condition and is low in instrument and equipment requirement, low in production cost, high in production efficiency and easy in operation. The obtained zinc sulfide film has relatively good continuity and uniformity, a main phase is a ZnS phase, and low-cost and large-scale industrial production can be realized.

The invention belongs to the technical field of oral ulcer dressings and provides an oral ulcer hydrogel sticker film with temperature-controlled adhesion and administration functions and a preparation method of the oral ulcer hydrogel sticker film. A temperature control unit interacts with a catechol derivative adhesion unit capable of being tightly adhered in a wet environment and a biocompatible biological base material separately to form the hydrogel sticker film with a three-dimensional network structure, and a medicine unit capable of treating oral ulcer can be added. According to the hydrogel sticker film, not only can adhesion be controlled through a temperature, but also physical-embedding and controllable release of a drug can be carried out.

The invention relates to the technical field of oral medicine, and discloses a denture with strong hydrophilicity and a preparation method thereof. The denture comprises a denture body and a hydrophilic layer on the surface of the denture body; the denture body is formed by sintering zirconia ceramic powder at static pressure; the outer surface of the denture body forms a grid-shaped protrusion surface through laser etching; and the surface of the denture body is coated with the hydrophilic layer through a dip-coating method. According to the denture with the strong hydrophilicity and the preparation method thereof provided by the invention, the TiO2-SiO2 composite film hydrophilic layer is formed on the surface of the denture body by the dip-coating method, the contact angle between the hydrophilic layer and water can be reduced to 3 degrees, and shows stronger hydrophilic performance; the film prepared by the dip-coating method is uniform in texture; the thickness of a coating layer can be accurately regulated and controlled according to the dip-coating speed and the dip-coating time; and the rough surface formed by carrying out laser etching on the surface of the denture body in advance is beneficial to enhancing the binding force between the denture body and the surface coating layer, so that the hydrophilic layer is prevented from falling off, and the service life of the denture is prolonged.