448 results about "Hydraclear" patented technology

The invention discloses an OCA optical adhesive and a preparation method thereof, and relates to the technical field of adhesives, and the OCA optical adhesive is prepared from the following raw materials in parts by weight: 35-45 parts of acrylate-terminated hyperbranched organosilicon modified polyurethane, 2-4 parts of allyl succinimido carbonate, 1-3 parts of hexafluorobisphenol A diacrylate, 1-3 parts of 1, 2, 4-trimethyl-1, 3-pentanediol monoisobutyrate, 1-3 parts of 1, 3-pentanediol monoisobutyrate, 1-3 parts of 1, 3-pentanediol monoisobutyrate, 1-3 parts of 1, 3-pentanediol The invention relates to a photocurable adhesive, which is prepared from the following components in parts by weight: 20 to 30 parts of a diluent, 0.6 to 1.2 parts of a photoinitiator, 0.5 to 1 part of an antioxidant and 0.5 to 1 part of a de-foaming agent. The photocurable adhesive is prepared from the following components in parts by weight: 1 to 5 parts of 1, 3-bis (oxiranyl methyl)-5-(2-propenyl)-1, 3, 5-triazine-2, 4, 6 (1H, 3H, 5H)-triketone, 3 to 5 parts of 2, 2 '-bis (trifluoromethyl) diaminodiphenyl, 6 to 8 parts of other polymerizable monomers, 20 to 30 parts of the diluent, 0.6 to 1.2 parts of the photoinitiator, 0.5 to 1 part of the antioxidant and 0.5 to 1 part of the de-foaming agent. The OCA optical adhesive is good in bonding performance, sufficient in weather resistance and environmental protection performance and good in oil resistance.

The invention discloses an ultrathin hydrophilic / hydrophobic ZnO-CuS-CC photo-thermal material as well as a preparation method and application thereof, and belongs to the technical field of photo-thermal evaporators. The ultrathin hydrophilic / hydrophobic ZnO-CuS (at) CC photo-thermal material comprises a hydrophobic substrate, an ultrathin ZnO-CuS hydrophilic layer grows on the upper surface of the hydrophobic substrate, the ultrathin ZnO-CuS hydrophilic layer comprises CuS nanosheets and ZnO nanoparticles attached to the CuS nanosheets, a large number of micro-pores and cavities are formed in the surface of the ultrathin ZnO-CuS hydrophilic layer, light traps are constructed by the micro-pores and the cavities, and the micro-pores and the cavities are formed in the surface of the ultrathin ZnO-CuS hydrophilic layer. The ZnO nanoparticles reduce light reflection and improve the light absorptivity. The photo-thermal evaporator prepared from the material can solve the technical problems of how to prevent salt deposition, effectively treat organic pollutants and realize efficient evaporation in the prior art.

The invention belongs to the technical field of contact lenses, and provides a moisturizing contact lens containing a hyaluronic acid coating and a preparation method of the moisturizing contact lens. The preparation method comprises the following steps: carrying out ultrasonic mixing on a hydrophilic monomer, a siloxane monomer, a cross-linking agent and an initiator, injecting the mixed solution into a contact lens mold, and carrying out polymerization reaction to obtain a contact lens material; mixing the chitosan solution, the shellac acid solution, the hyaluronic acid solution and the vitamin E succinate solution to obtain a hyaluronic acid mixed solution; and soaking the contact lens material in the hyaluronic acid mixed solution, adding a cross-linking agent, curing, and drying to obtain the moisturizing contact lens containing the hyaluronic acid coating. The contact lens disclosed by the invention has excellent moisture retention, good light transmission performance, swelling performance and excellent mechanical property, the wearing comfort is remarkably improved, and the contact lens is suitable for being worn for a long time; the preparation method disclosed by the invention is environment-friendly and easy to industrialize.

The invention provides a silicone hydrogel contact lens and a preparation method thereof, and relates to the technical field of silicone-containing gel materials. The preparation method comprises the following steps: mixing hyaluronic acid and 2, 3-epoxypropyltrimethylammonium chloride for preliminary modification, and then adding glycidyl methacrylate for modification to obtain modified hyaluronic acid; mixing a siloxane monomer, 2-hydroxyethyl methacrylate, 1-vinyl-2-pyrrolidone, an acrylamide compound, the modified hyaluronic acid, a cross-linking agent, an initiator and a solvent, and polymerizing to obtain a prepolymer; injecting the prepolymer subjected to defoaming treatment into a mold, and curing to obtain a lens; and sequentially soaking the lens with an alkali solution and water to obtain the silicone hydrogel contact lens. The silicone hydrogel contact lens has relatively good hydrophilic and water-retaining performance and relatively low protein adsorption performance, the wearing comfort and the durability of the lens are improved, and the service life of the silicone hydrogel contact lens is prolonged.

The invention belongs to the technical field of hydrogel materials, and discloses a carboxylated chitosan modified silicone hydrogel contact lens material and a preparation method thereof. The preparation method comprises the following steps: mixing a siloxane monomer, a zwitterionic monomer, a first cross-linking agent, an initiator and a first organic solvent, and carrying out polymerization reaction to obtain silicone hydrogel; and mixing the silicone hydrogel, carboxylated chitosan, a second cross-linking agent and a second organic solvent, and carrying out a cross-linking reaction to obtain the carboxylated chitosan modified silicone hydrogel contact lens material. The zwitterionic monomer is introduced into the siloxane monomer polymerization process, and the carboxylated chitosan is adopted to modify the silicone hydrogel, so that the protein adsorption resistance and antibacterial property of the contact lens material are effectively improved. Meanwhile, the raw materials are wide in source, the preparation method is simple and easy to operate, and large-scale industrial production can be achieved easily.

The invention relates to the technical field of medicine quality detection, in particular to a capsule medicine multi-mode defect detection system and a multi-dimensional detection method, and the detection system comprises a detection container filled with an intelligent response type medicinal silicone oil composition, a transmission system, a detection mechanism, a control system and a rejection mechanism. Through density adjustment, temperature-sensitive-fluorescence response and multi-mode detection technologies, accurate detection of defects such as capsule liquid leakage, cracks and poor sealing can be realized. The detection method adjusts the silicone oil density according to the capsule type, and collects, fuses and analyzes buoyancy signals and optical image data to judge defects. According to the invention, the detection precision is high, and 0.02 [mu] L-level leakage and 0.1 mm-level cracks can be detected; the compatibility is strong, and the method is suitable for 95% of commercially available capsules; the cost is low, the equipment and maintenance cost is greatly reduced, and silicone oil can be recycled; the medicine production specifications are met.

The invention belongs to the technical field of contact lenses, and provides a high-oxygen-permeability silica hydrogel and a silica hydrogel contact lens. The product is prepared from the following raw materials in parts by mass: 20 to 90 parts of organic silicon monomer, 20 to 80 parts of hydrophilic monomer, 0.1 to 5 parts of cross-linking agent, 0.2 to 7 parts of initiator and 20 to 50 parts of solvent. Symmetrical monomethacryloyloxy propyl modified polydimethylsiloxane, methyl-di (trimethylsiloxy)-silyl propyl glyceryl methacrylate and 2-(trimethylsiloxy) ethyl methacrylate are selected as organic silicon monomers together, and the three organic silicon monomers cooperate with one another, so that the viscosity of the organic silicon resin is improved; the oxygen permeability of the lens is improved; and the three organic silicon monomers and the hydrophilic monomer have good solubility. In addition, the sample is soaked in an isopropanol solution, so that the transparency of the lens is improved, and meanwhile, a channel on the lens is opened, so that the oxygen permeation coefficient of the lens is improved.

The invention relates to the technical field of cosmetics, in particular to a concealer composition and application thereof. The concealer composition comprises the following components: titanium dioxide, silica hyaluronate and a hyaluronic acid elastomer, and the weight ratio of the titanium dioxide to the silica hyaluronate to the hyaluronic acid elastomer in the concealer composition is (0.11-2): (0.11-0.8): (0.01-0.1). The light-sensitive concealing composition has an excellent concealing effect, visually conceals flaws and restrains powder to prevent migration by regulating and controlling optical means and increasing diffuse reflection and red light signals, and meanwhile, gives clear makeup feeling.

The present invention relates to a weather-resistant and scratch-resistant super-hydrophobic organosilicon waterproofing agent and a preparation method thereof, and belongs to the technical field of organosilicon waterproofing materials. The organosilicon waterproofing agent comprises the following components by weight: 1 to 10 parts of hydroxy silicone oil, 1 to 10 parts of vinyl silicone oil, 1 to 5 parts of amino silicone oil, 1 to 3 parts of a first silane coupling agent, 1 to 5 parts of a second silane coupling agent, 1 to 3 parts of nano-silica, 80 to 100 parts of a solvent, and 0.001 to 1 part of a catalyst. The organosilicon waterproofing agent of the present invention can be widely used on the surfaces of various building materials and can quickly make the surface of the substrate achieve a super-hydrophobic effect. It can also achieve a long-term weather-resistant effect and possess excellent weather-resistant and scratch-resistant properties. In addition, the preparation process of the waterproofing agent of the present invention uses simple and inexpensive industrial raw materials, the production process is economical and efficient, the production process is simple to operate, the production energy consumption is low, and it is easy to scale industrial production.

The invention relates to the technical field of hydrogel materials, and discloses an oxygen-permeable silicon hydrogel material for contact lenses and a preparation method thereof.The preparation method comprises the steps that ethylene glycol diglycidyl ether and bis (2-chloroethyl) amine hydrochloride are subjected to a ring-opening reaction, and an intermediate product 1, 2-propylene glycol is obtained; carrying out substitution and hydrolysis reaction on the polyalkenyl quaternary ammonium salt and diethyl iminodiacetate to obtain an intermediate product 2, and carrying out quaternization reaction on the intermediate product 2 and chloropropene by utilizing a tertiary amine structure contained in the intermediate product 2 to obtain the polyalkenyl quaternary ammonium salt. And finally, carrying out polymerization reaction on the silicon hydrogel, hydroxyethyl methylacrylate, gamma-(methacryloyloxy) propyltrimethoxysilane and vinyl-terminated dimethyl polysiloxane, putting the obtained product into a contact lens half mold for reaction, and demolding to obtain the oxygen-permeable silicon hydrogel material. The hydrogel material prepared in the invention has good hydrophilic effect and oxygen permeation effect, and can be widely applied to contact lenses.

The invention relates to the technical field of organic silicon elastomers, and discloses a preparation method and equipment of high-brightness organic silicon elastomer gel, and the high-brightness organic silicon elastomer gel comprises the following components in parts by mass: 124 parts of hydrogen-containing silicone oil and 13 parts of vinyl MQ resin. According to the invention, polydimethylsiloxane and isoalkane in a certain mass ratio are used as carrier fluids, and the polydimethylsiloxane and the isoalkane act together, so that the obtained product has more excellent silky feeling, matte feeling, smearing spreadability and skin feeling durability, can provide lasting velvet-like smooth feeling for the product, can bring matte and soft-focus effects for the product, and can be used for preparing a soft-focus soft-focus product. According to the present invention, the product viscosity can be reduced, the refreshing non-greasy skin feeling can be provided for the product, the product can be used as the high transparent system, the good smearing spreading degree and the good water resistance can be provided, the thickening effect can be provided in the anhydrous formula and the water-in-oil formula, and the product stability can be improved.

The invention discloses a hydrogel-based low-temperature high-steam self-heating eyeshade and a preparation method thereof, and belongs to the technical field of personal care supplies, and the self-heating eyeshade sequentially comprises a breathable outer layer, a self-heating body and a composite dressing from outside to inside. The composite dressing is formed by tightly attaching a hydrogel functional layer and a supporting layer. According to the self-heating eyeshade, through the collaborative design of all the functional layers, the composite dressing is arranged between the self-heating body and the skin, so that heat preferentially drives hydrogel moisture to evaporate; meanwhile, the hydrogel three-dimensional network structure provides a huge specific surface area, the low-temperature evaporation efficiency is effectively improved, and steam explosion is avoided and stable and continuous output is achieved by regulating release kinetics through bound moisture. The working temperature of the self-heating eyeshade is stably maintained within the range of 37-45 DEG C, the steam quantity can be 2-2.4 times that of a traditional product under the low-temperature condition, and the self-heating eyeshade has remarkable advantages in key performance such as safety, comfort, steam durability and steam quantity.

The invention discloses a test device and method for in-situ monitoring of hydrates by using thermal-electric coupling, and belongs to the technical field of experiments for simulating generation and decomposition of hydrates in laboratories. The device comprises a hydrate synthesis and decomposition system, a temperature control system, a pressure control system, a thermal-electric parameter measurement system, a gas collection system and a data acquisition and user monitoring system, wherein a multi-point temperature sensor, a resistivity measurement probe and a heat conductivity coefficient measurement probe are arranged in a reaction kettle cavity; in-situ and real-time monitoring of multiple physical property parameters such as temperature distribution, resistivity change and heat conductivity coefficient in the whole process of generation and decomposition of the hydrate sample can be realized. According to the invention, thermal-electric coupling monitoring can be realized under high-pressure and low-temperature conditions, and a high-precision means is provided for hydrate formation mechanism research and exploitation processes.

The invention discloses a photocuring hydrogel anticoagulant coating and a preparation method thereof, and belongs to the technical field of biomedicine. The preparation method comprises the following steps: firstly, preparing methacrylated polyvinyl alcohol, methacrylated heparin, a photoinitiator and water into a uniform coating dipping solution, dipping a substrate with a clean surface into the coating dipping solution for 5-100 minutes, taking out the substrate, airing, repeatedly dipping for 2-10 times, and curing the obtained substrate under ultraviolet excitation light to obtain the coating. The preparation process of the photocuring hydrogel anticoagulant coating is simple and easy to operate, the reaction condition is mild, and the prepared photocuring hydrogel anticoagulant coating has very good biocompatibility, can be firmly combined with a substrate material, has very excellent anticoagulant performance and has very good application prospects.

The invention relates to the technical field of petroleum drilling engineering, and particularly discloses a drilling plugging agent as well as a preparation method and application thereof. According to the plugging agent, nano silicon dioxide and graphene oxide serve as a composite matrix, and the well drilling plugging agent with excellent dispersion stability, compact plugging performance, temperature resistance, salt resistance and reservoir friendliness is obtained through silane coupling agent graft modification and polymer copolymerization composite modification. The technical defects that an existing nano plugging agent is prone to agglomeration, poor in compatibility with drilling fluid, insufficient in extreme working condition resistance and the like are overcome, the preparation process is simple and controllable, the cost is relatively low, the plugging agent can be added into water-based or oil-based drilling fluid according to the mass ratio of 0.5-5%, the plugging agent is suitable for shale, deep high-temperature high-pressure high-salt complex stratums and the like, a compact plugging layer can be formed, and the plugging effect is good. Shale micro-cracks and deep stratum large cracks are effectively blocked, and the problems that a traditional blocking agent is prone to agglomeration, poor in extreme working condition resistance and the like are solved.

The invention belongs to the technical field of contact lens care, and provides temperature-sensitive contact lens eye-moistening gel and a preparation method thereof. The temperature-sensitive contact lens eye-moistening gel is prepared from the following raw materials in parts by mass: a gel matrix, a surfactant, an osmotic pressure regulator, an active component, a chelating agent, a buffering agent and the balance of injection water, the composition of the gel matrix is defined. Chitosan, sodium hyaluronate and polyvinyl alcohol are compounded to serve as a gel matrix, a polyelectrolyte compound is formed, gelation time is shortened, gel strength and swelling resistance are improved, biocompatibility is improved, and drug-loaded delivery of active ingredients is achieved; the gel matrix and the surfactant are reasonably selected, the viscosity of the solution is increased, the gelation time is shortened, the excellent effect of relieving eye fatigue and dryness is achieved, the wearing comfort of the contact lens is remarkably improved, and the oxygen permeation effect of the contact lens is not obviously reduced after gel forming.

The utility model relates to the technical field of beauty face masks, in particular to a waterproof beauty face mask sealed by liquid silica gel, which comprises a base material, a circuit element is arranged on the surface of the base material, the circuit element is covered by a coating layer, and wearing parts are arranged on two sides of the base material and used for limiting the beauty face mask on the face of a user in an anti-dropping mode. The waterproof beauty mask sealed by the liquid silica gel has the advantages that the liquid silica gel is melted through high temperature and then fused among the LED flexible circuit board, the power line and the solid silica gel, so that the waterproof beauty mask meets the high-performance waterproof requirement.

The invention belongs to the technical field of dental dressings, and particularly relates to a bacteriostatic repair-promoting hydrogel dressing and a preparation method thereof. It is found for the first time that the compound A has remarkable antibacterial activity on common bacteria in the oral cavity, and after the compound A is prepared into the temperature-sensitive hydrogel dressing, the compound A still has antibacterial activity. When the implant is injected into the periphery of the implant, the alveolar bone can be prevented from being reduced, vertical bone regeneration at the periphery of the implant is stimulated, the bone mass is increased so as to improve the stability of the implant, finally, the fusion of a wound between the alveolar bone and the implant is promoted, and the service life of the implant is prolonged.

The invention belongs to the technical field of contact lenses, and provides a contact lens ink and a preparation method thereof, the product comprises the following preparation raw materials by mass: 30-40 parts of a hydrophilic monomer, 10-20 parts of an organosilicon monomer, 10-15 parts of a functional monomer, 5-15 parts of a solvent, 1-5 parts of an auxiliary agent, 1-2 parts of a chain transfer agent, 0.5-1 part of a cross-linking agent, 0.5-0.8 part of an initiator, 1-5 parts of a pigment, and 1-1.5 parts of triethylene diamine. The organic silicon monomer enables the contact lens to have a double-channel structure of a silicon channel and a water channel, and oxygen in the air can penetrate through the lens to be in contact with the cornea, so that the oxygen deficit condition of eyes wearing the contact lens is improved. Meanwhile, the added auxiliaries are meglumine and allyloxy hydroxypropyl sodium sulfonate, and hydroxyl and sulfonic acid groups have hydrophilicity, so that the stability of the ink is improved, the contact angle of the surface of a lens can be obviously reduced, the surface wetting degree is increased, and the problem of difficult wetting is solved.

The invention relates to the technical field of contact lens automatic production, in particular to a contact lens filling and mold closing method and device, and the method comprises the following steps: S10, carrying a jig assembly to a station; s20, a lower die is fixed through a lower die positioning mechanism; s30, an upper mold positioning mechanism fixes the upper mold, a mold opening mechanism opens the upper mold, and the upper mold positioning mechanism moves the upper mold away from the lower mold; s40, the liquid injection unit is filled with injection liquid; s50, an upper die positioning mechanism is used for positioning an upper die and a lower die; S60, the upper die positioning mechanism is used for pressing the upper die and the lower die; s70, the lower die positioning mechanism stops positioning, and the turnover unit drives the jig assembly to leave the station; the whole structure is compact, the function integration degree is high, and redundant turnover and complex actions are not needed; rapid mold splitting and cover opening can be achieved, and the liquid injection filling action integrating pumping and injection is completed through the liquid injection valve set; the liquid injection needle group is prevented from performing redundant actions, the multi-hole liquid injection filling efficiency is improved, the risk of manual operation is reduced, and the overall production and processing quality of contact lenses is improved.

The utility model discloses silica gel sealing gasket dispensing and hot-pressing equipment which comprises a working table, a hot-pressing device is arranged on the left side of the top of the working table and used for achieving hot-pressing operation on a silica gel sealing gasket, and a dispensing device is arranged on the right side of the top of the working table and used for achieving dispensing operation on the silica gel sealing gasket. A rotating mechanism is arranged in the working table, the rotating mechanism comprises a rotating assembly, and the rotating assembly comprises a rotating disc rotationally arranged at the bottom of an inner cavity of the working table. According to the dispensing and hot-pressing equipment for the silica gel sealing gasket, under the driving of the driving motor, the placing plate and the mold plates rotate intermittently, the mold plates rotate by 180 degrees after glue injection is completed and then stop below the hot-pressing plate, follow-up hot-pressing operation is carried out, the positions between the two mold plates are continuously switched, and the hot-pressing efficiency of the silica gel sealing gasket is improved. And the dispensing and hot pressing operations are more convenient, so that the working efficiency is improved.

The invention relates to the technical field of cables, in particular to a strong-acid-resistant and high-temperature-resistant silicone rubber cable and a processing technology thereof.The strong-acid-resistant and high-temperature-resistant silicone rubber cable sequentially comprises a multi-core insulating wire core, a filling layer, a cabling cable core wrapping tape, a shielding layer, an optical fiber unit, a buffer layer, a fluorocarbon protective layer and a corrosion-resistant and high-temperature-resistant sheath layer from inside to outside. Through the multi-layer protection design of the conductor anticorrosion priming coat, the insulating layer fluorosilicone resin protection layer, the filling layer-wrapping tape-buffer layer ceramic silicone rubber synergistic protection, the hydrophobic anti-permeation interlayer and the sheath layer acid-resistant filler, a compact acid-resistant protection system is formed, the cable is soaked in sulfuric acid / hydrochloric acid with the concentration of 50% and the temperature of 250 DEG C for 720 h, and the cable has the good anti-corrosion performance. The sheath layer and the wrapping tape do not crack, swell or fall off, the insulation performance is not obviously reduced, the problem that an existing cable is prone to aging and damage under strong acid is solved, double corrosion prevention of the conductor is achieved, and strong acid corrosion is thoroughly avoided.

The invention relates to the technical field of surface treatment of glass, in particular to super-wear-resistant hydrophobic AG glass and a preparation method thereof.The preparation method includes the steps that a silicone-acrylic emulsion layer is prepared on a cleaned glass substrate, after drying, the silicone-acrylic emulsion layer cracks, a net-shaped silicone-acrylic cracking template is obtained, the net-shaped silicone-acrylic cracking template is plated with an Al2O3 film, an obtained sample is put into acetone to be subjected to ultrasonic cleaning, and the super-wear-resistant hydrophobic AG glass is obtained. And removing the silicone acrylic cracking template to obtain an Al2O3 grid protruding on the surface of the glass substrate, annealing the glass sample, soaking the glass sample in a hydrophobic coating, taking out the glass sample, and baking the glass sample to obtain the super wear-resistant hydrophobic AG glass. The preparation method is simple and efficient, the hydrophobic material is locked by plating the glass substrate with the Al2O3 grids, the wear resistance of the hydrophobic layer of the glass is improved, the obtained super-wear-resistant hydrophobic AG glass has the anti-glare effect and high light transmittance and has the antifouling and self-cleaning functions, and the Al2O3 grids are filled with the hydrophobic layer, so that the super-wear-resistant hydrophobic AG glass is not prone to being abraded and has the excellent wear-resistant effect.

The invention relates to the technical field of silicone rubber sealing materials, and discloses a fast-curing matte silicone sealant and a preparation method thereof.The silicone sealant is prepared from, by mass, 100 parts of alpha, omega-dihydroxy polydimethylsiloxane, 5-15 parts of a reactive plasticizer, 70-120 parts of calcium carbonate, 5-10 parts of a cross-linking agent, 1-5 parts of a coupling agent, 0.5 part of a catalyst and 0.5-1 part of a vulcanization accelerator; 0.2 to 1.5 parts of a reaction type matte agent solution; the reaction type matte agent solution is a mixture of hydroxylated eleostearic acid triglyceride and a cross-linking agent. The silicone sealant prepared by the invention has the advantages of smooth surface, excellent matte effect, weather aging resistance, thixotropy, rapid curing and the like, can be used as a sealing material for high-end buildings, and has a wide application prospect.

The invention relates to the technical field of material testing, and discloses an air permeability detection device for a silica gel protective film, the air permeability detection device comprises a supporting table, the exterior of the upper side of the supporting table is fixedly connected with a control center, the interior of the supporting table is fixedly connected with an air pump, and the output end of the air pump is connected with a connecting pipe; an electric push rod is fixedly connected to the inner top wall of the supporting table, a first connecting block is connected to the output end of the electric push rod, a second connecting block is fixedly connected to the bottom end of the first connecting block, an extrusion head is fixedly connected to the bottom end of the second connecting block, and a supporting frame is fixedly connected to the inner bottom wall of the supporting table. A clamping assembly is slidably connected to the interior of the supporting frame. The device can adapt to silica gel protective films with different thicknesses through the fixing assembly, stable fixing pressure can be provided for samples with or without frames through the fixing assembly, the problem that fixing is not firm due to the thickness difference of traditional equipment is solved, and the detection accuracy is remarkably improved.

The invention relates to the technical field of gluing pumps, and discloses a liquid silica gel injection machine and a using method, the injection machine comprises a base, a lifting rod, a hydraulic rod, a pressure plate, a connecting pipe, a three-way valve, a stirring part, a cleaning and scraping part and a squeezing and spraying part. A stirring part downwards pushes a trigger switch through a T-shaped ring, an electric rod is automatically started to push a motor and a glue stirring piece to extend into a glue barrel, a stirring plate and a glue disc rotate to stir liquid silica gel, and layering and local curing are prevented; the cleaning and scraping part is quickly inserted into a supporting rod through an inserting rod, a T-shaped ring is rotated to drive a rotating sleeve to rotate with a flange as the circle center, and a cotton brush and a scraping plate rotationally clean a pressing disc and the flange; and the extrusion spraying part extrudes the corrugated bag to enable the sol agent to be sprayed to a cleaning surface through the guide channel and the liquid channel, and cooperates with mechanical scraping for cooperative cleaning. The cleaning efficiency is improved, the residual silica gel rate is reduced, the equipment maintenance time is shortened, and the injection quality and the production efficiency are remarkably improved.

This invention arrests the hydrophilic silicone macrochains into semi-interpenetrating polymer network via in situ photo-gelation assisted 3D microextrusion printing technique. The printed hybrid hydrogel has shown microporous morphology with tunable diffusion behaviour. The flow behaviour of the hydrogel has been tested showing high elastic modulus, low tan δ, high gel strength, and delayed network rupturing behaviour. The uniaxial compression test showed the almost zero permanent set which could promote it as an elastomer mimetic soft biomaterial. Moreover, the drug loading into the hydrogel has been performed which showed hydrophilic silicone dependent non-Fickian anomalous transport. The encapsulated drug stability inside hydrogel matrices also showed no deterioration of the pristine drug molecules even after one month storage. This could be the first hydrodrophilic silicone based soft biomaterial will serve as an excellent controlled drug delivery device.

The invention belongs to the technical field of compositions, and provides a moisture-retaining and eye-moistening composition as well as a preparation method and application thereof. According to the moisturizing eye-moistening composition provided by the invention, the soybean lecithin, the retinol palmitate lipidosome, the xanthophyll, the oligomeric hyaluronic acid and the ethylenediamine tetraacetic acid in a specific ratio are combined, and all the components can play a good synergistic effect, so that the effects of relieving asthenopia symptoms, protecting eyesight and maintaining normal vision are improved; the eye drops can improve and relieve eye dryness and eye astringency symptoms caused by various reasons (such as fatigue, wearing of contact lenses, use of electronic products, excessive use of eyes and the like).

The utility model is suitable for the technical field of quick-opening cups, and provides a side-pressing expansion silica gel quick-opening cup cover which comprises a first cover body, and a second cover body is movably connected with the first cover body. The buttons are movably installed on the two sides of the first cover body and matched with the second cover body in a buckled mode, and after the buttons and the second cover body are released, the first cover body and the second cover body move relatively; when the expansion sealing assembly, the button and the second cover body are buckled, the first cover body abuts against the supporting rods, the flexible sleeve driving piece is driven to move, the flexible sleeve is forced to be compressed and expanded relative to the second cover body and abut against the cup body for sealing, when the first cover body and the second cover body move relatively, abutting against the expansion sealing assembly is relieved, and the flexible sleeve recovers deformation under the elastic force effect and does not abut against the cup body. The utility model further provides a cup. The cover opening action is smooth, the lock catch is arranged, safety and reliability are achieved, and cleaning and sanitation dead angles are eliminated.