26 results about "Cellulose triacetate" patented technology

The invention relates to the technical field of batteries, in particular to a composite solid electrolyte membrane and a preparation method and application thereof. The composite solid electrolyte membrane comprises the following layers which are stacked in sequence: a first membrane layer which comprises a polymer, a solid electrolyte and a lithium salt; the second film layer comprises a polymer, a solid electrolyte and a lithium salt; the third film layer is an interface layer; wherein the solid electrolyte content and the lithium salt content of the second film layer are both higher than the solid electrolyte content and the lithium salt content of the first film layer, and the polymer is formed by polymerizing raw materials including cellulose triacetate (TCA) and polyvinylidene fluoride-hexafluoropropylene (PVDF-HFP). The composite solid electrolyte membrane has improved high temperature resistance and good ion transmission performance.

The invention discloses an anti-falling electro-atomization lens preparation method which comprises the following steps: S1, raw material preparation: raw material particles of cellulose triacetate are heated to a molten state in a vacuum environment; s2, injecting into a mold: injecting the molten liquid into the mold under high pressure; s3, curing and shaping: rapidly curing and shaping the liquid material in the mold through cooling or ultraviolet irradiation; s4, coating treatment: immersing the lens in a silicide or metal oxide solution, enabling the liquid to be uniformly attached in a centrifugal or soaking manner, and then curing through ultraviolet rays or heating, and S5, overlapping and fixing: fixing two lenses in a manner of clamping a liquid crystal diaphragm, so as to form the electro-atomization lens. According to the preparation method of the anti-falling electro-atomization lens provided by the invention, the impact resistance of the lens is improved by adopting a high-molecular polymer and corresponding process treatment, so that the lens has the characteristic of being not easy to break and is better suitable for teenagers to wear. The invention also provides a lens.

The invention relates to an ultra-thin dye polaroid, a preparation method and an ultra-thin circular polaroid, and the ultra-thin dye polaroid comprises polyethylene glycol terephthalate-1, 4-cyclohexanedimethanol and a dye dispersed in the polyethylene glycol terephthalate-1, 4-cyclohexanedimethanol in a dissolving mode. According to the invention, dye is dissolved and dispersed in polyethylene glycol terephthalate-1, 4-cyclohexanedimethanol, and the ultrathin dye polaroid is finally obtained through the steps of mixing, extrusion, coating, curtain coating, one-way calendering, stretching and drying. On one hand, a dissolving and dispersing mode is adopted, dye dispersion is more uniform, and the polarization degree and the light transmittance of all parts of the polaroid are guaranteed; on the second aspect, the polaroid does not need to be clamped and fixed by a cellulose triacetate film, so that the thickness of the polaroid can be further reduced; and thirdly, the retarder is compounded on the ultrathin dye polaroid, so that the purpose of manufacturing the ultrathin circular polaroid is achieved.

A dichloromethane-free wet spinning process for producing cellulose triacetate fiber with a silk factor greater than 8.0. A dichloromethane-free cellulose triacetate dope comprising dimethylacetamide is wet spun into a coagulation bath which is controlled to a temperature ranging from 20° C. to 40° C. and comprising dimethylacetamide and water. A jet draw stretching ratio ranging from 0.3 to 1.4 is applied to the wet spun CTA fibers which may also be subjected to one or more post jet draw stretching steps. During drying, the CTA fibers are partially or completely shrunk. This process enables CTA fiber(s) having a silk factor greater than 8.0 to be produced without using dichloromethane and without the energy costs associated with other processes that requiring lower or higher coagulation bath temperatures.

The invention relates to the technical field of fibers, and discloses a cellulose acetate composite fiber and a preparation method and application thereof in yarns, the cellulose acetate composite fiber comprises polyacrylonitrile, cellulose triacetate and cyano ester polyquaternium according to a ratio of (65-80) g: (20-35) g: (3-8) g; the compatibility between the cellulose triacetate and the polyacrylonitrile is improved by the cyano ester polyquaternium, and the breaking strength and the breaking elongation of the composite fiber are remarkably improved. The cyano ester polyquaternary ammonium salt contains a large number of antibacterial quaternary ammonium salt groups and is uniformly dispersed in matrixes of cellulose triacetate and polyacrylonitrile, so that more antibacterial sites are provided, the antibacterial property of the fiber is remarkably improved, and the antibacterial property of the fiber is remarkably improved.

The invention belongs to the technical field of water treatment membranes, and particularly relates to a spiral-wound membrane grid material as well as a preparation method and application thereof. A preparation method of a spiral-wound membrane grid material comprises the following steps: S1, dissolving cellulose triacetate in a solvent to form a cellulose triacetate solution, dissolving polyethylene glycol in deionized water to form a polyethylene glycol solution, mixing the cellulose triacetate solution and the polyethylene glycol solution, adding an emulsifier, and carrying out emulsification treatment to obtain an emulsion, performing electrostatic spinning on the emulsion to form a fiber membrane on a supporting grid, and performing vacuum drying to obtain a composite membrane; s2, washing the composite membrane with deionized water, and soaking the composite membrane in a modification liquid for post-treatment to obtain a porous composite membrane; s3, the porous composite film and the porous grid are alternately stacked and subjected to hot pressing combination, then winding forming is conducted, and a roll type film grid material is obtained; the spiral-wound membrane grid material has high porosity and good desalination rate, and can be applied to the fields of separation, filtration or catalysis and the like.

A screen protective film is described that is configured to be peelably attached to an optical coating on a glass-containing display of an electronic device. The protective film comprises: a glass-containing substrate comprising an outer major surface and an inner major surface; an anti-reflection (AR) coating on the outer major surface; and an intermediate layer on the interior major surface for peelable attachment to an optical coating on a display. The intermediate layer includes an adhesive, has a physical thickness of about 10 [mu] m to 500 [mu] m, and one or more refractive indices of about 1.2 to 1.6. In addition, the average photopic reflectance of the screen protection film may be less than 2% for all incident angles from 0 DEG to 30 DEG. The intermediate layer may include an optically clear adhesive (OCA) layer, a polymer-containing layer, and a peelable adhesive layer. A shatterproof (AS) film may be between the intermediate layer and the substrate. The intermediate layer and / or the AS film may be a cycloolefin, cellulose triacetate, or polyurethane.

The utility model relates to the field of optical lenses, in particular to a polarized glasses lens which comprises a first coating layer, a first reinforcing layer, a polarized layer, a color layer, a light conversion layer, a second hardening layer and a second coating layer which are sequentially arranged in a stacked mode in the light incidence direction. The first reinforcing layer adopts a specific film and is bonded through optical transparent ultraviolet curing, the polarization layer is a linear polarizer with a specific structure and forms a certain included angle with the light conversion layer, the color layer is a blue light, color light and other light filtering layer, and the light conversion layer adopts a cellulose triacetate film subjected to uniaxial stretching treatment. The second hardening layer is an ultraviolet curing resin layer, and the second coating layer is an anti-reflection and anti-reflection film layer so as to improve light transmittance and reduce reflection. Various technical effects of resisting reflection, enhancing the strength of the lens, realizing a polarization function, filtering blue light, converting a light polarization state, depolarizing and the like are achieved.

An environmentally friendly, low-leaching cellulose triacetate (TAC) membrane comprises a three-layer or higher laminated structure. The raw materials include cellulose, plasticizer, leaching-resistant UV absorber, leaching-prone UV absorber, and organic solvent. The preparation method is as follows: S1, preparing a steel strip layer, an intermediate layer, and an air layer for the TAC membrane, forming corresponding sizing solutions; S2, extruding the three-layer sizing solutions and evenly spreading them onto a stainless steel strip to form a liquid film, which is then formed through multi-layer casting. The liquid film is placed in a drying oven for preliminary drying, and when its moisture content reaches 25 wt%, it is peeled off from the steel strip and enters the transition and post-drying stages; S3, edge trimming, balancing, embossing, and winding yield the TAC membrane. This invention employs a multi-layered, differentiated layout of UV absorbers and precise process control, significantly reducing UV absorber leaching; it uses an environmentally friendly UV absorber system with low halogen content; the raw materials are readily available and low-cost; the process is compatible with existing production lines and is easy to mass-produce.

The present patent of invention relates to an innovative composition with excellent non-flammable and self-extinguishing properties for composite materials, from which many useful molded materials can be produced, and also to the provision of inorganic compounds coated with an inert material, defined as a material that does not exhibit reactivity with the inorganic compounds. The present invention provides organic materials and, more particularly, relates to highly polymeric materials having excellent fire-retardant properties, such as those employed in the manufacture of molding and extrusion compositions, film sheets, fibers, textiles, papers, surface or coating compositions, impregnating agents, solid forms, rubbers, and the like. The invention may also be applied especially to wet-spun and dry-spun fibers, such as acrylic fiber, polyvinyl alcohol fiber and viscose rayon, and melt-spun fibers, such as nylon, polyester fiber, and other fibers, such as di- or triacetate cellulose fibers. The invention is also applicable to plastics and films, by adding said inorganic compounds prior to molding. Another noteworthy feature of this invention is that when, for example, fibers produced by the process are ignited, no toxic gas is generated before the fire is extinguished.

A laminated pane includes first and second panes, a layer stack arranged therebetween including a first thermoplastic intermediate layer, a separating layer, a photopolymer layer with at least one holographic element, a carrier layer, and a second thermoplastic intermediate layer, wherein the photopolymer layer has a thickness of 5 μm to 50 μm, the carrier layer contains polyethylene terephthalate (PET), polyethylene (PE), polymethyl methacrylate (PMMA), polycarbonate (PC), polyamide (PA), polyvinyl chloride (PVC), and / or cellulose triacetate (TAC) and has a thickness of 20 μm to 100 μm, wherein the carrier layer is arranged directly adjacent the photopolymer layer, and the separating layer contains polyethylene (PE), polyvinyl chloride (PVC), and / or polymethyl methacrylate (PMMA) and has a thickness of 10 μm to 300 μm.

The invention provides a homogeneous preparation method of cellulose triacetate, which comprises the following steps: S1, dissolving cellulose in a eutectic solvent under the condition of supercritical carbon dioxide to obtain a homogeneous cellulose solution; s2, adding acetic anhydride and a dehydrating agent into the homogeneous cellulose solution, and carrying out esterification reaction under the condition of supercritical carbon dioxide; and S3, after the reaction is finished, precipitating the reaction liquid, and purifying and drying the obtained precipitate to obtain the cellulose triacetate. The method has the characteristics of uniform reaction, high efficiency and environmental protection.

The invention relates to an ultra-thin iodine polaroid, a preparation method and an ultra-thin circular polaroid, and the ultra-thin iodine polaroid comprises polyethylene glycol terephthalate-1, 4-cyclohexanedimethanol and iodine and / or potassium iodide dispersed in the polyethylene glycol terephthalate-1, 4-cyclohexanedimethanol in a dissolving manner. According to the invention, iodine and / or potassium iodide are / is dissolved and dispersed in polyethylene glycol terephthalate-1, 4-cyclohexanedimethanol, and the ultrathin iodine polarizer is finally obtained through the steps of material mixing, distillation, extrusion, coating, curtain coating, one-way calendering, stretching and drying. On the first aspect, iodine and / or potassium iodide are dispersed more uniformly by adopting a dissolving and dispersing mode, so that the degree of polarization and the light transmittance of each part of the polaroid are guaranteed; on the second aspect, the polaroid does not need to be clamped and fixed by a cellulose triacetate film, so that the thickness of the polaroid can be further reduced; and thirdly, a retarder is compounded on the ultra-thin iodine polaroid, so that the purpose of manufacturing the ultra-thin circular polaroid is achieved.

This invention provides an anti-fogging, antibacterial, and antistatic coating, its preparation method, and its application. The anti-fogging, antibacterial, and antistatic coating comprises a substrate layer, an antistatic primer layer, and an anti-fogging and antibacterial coating. The substrate layer is thermoplastic polyurethane, polyethylene terephthalate, or cellulose triacetate. The antistatic primer layer comprises a dual-curing prepolymer, a reactive diluent, a first photoinitiator, a thermal initiator, an antistatic agent, and a first solvent. The anti-fogging and antibacterial coating comprises an allyl alkyl imidazole bromide prepolymer, modified inorganic particles, a hydrophilic UV prepolymer, a second photoinitiator, and a second solvent. It is obtained by preparing an antistatic coating liquid, an anti-fogging and antibacterial coating liquid, an antistatic primer layer, and an anti-fogging, antibacterial, and antistatic coating. The anti-fogging, antibacterial, and antistatic coating prepared by this invention can be used in the preparation of mirror protective layers and has good anti-fogging, antibacterial, and antistatic properties.

The utility model relates to the technical field of optical devices, in particular to a polaroid, a spectacle lens and a display. The polaroid comprises a first polycarbonate layer, a polyvinyl alcohol layer and a second polycarbonate layer, and the first polycarbonate layer, the polyvinyl alcohol layer and the second polycarbonate layer are sequentially stacked to form a sandwich structure. According to the polaroid, the structure of the polaroid is creatively designed into the sandwich structure of the polycarbonate layers, the polyvinyl alcohol layers and the polycarbonate layers, the polyvinyl alcohol layers play a role in polarization, and the two polycarbonate layers serve as base materials of the polaroid, have corresponding performance such as optical transmittance and also have the functions of supporting and protecting the polyvinyl alcohol layers. Compared with the existing polycarbonate-cellulose triacetate-polyvinyl alcohol-cellulose triacetate polaroid, the polaroid disclosed by the utility model has the advantages that the production cost is greatly reduced, the polaroid is not easy to layer during cutting, no rainbow pattern exists or the rainbow pattern is slight, and the stability is higher. The lens can be used in spectacle lenses, head-up display and LCD display.

The invention provides a cellulose triacetate optical film for a polaroid and a preparation method of the cellulose triacetate optical film, and relates to the field of optical films for polaroids. The preparation method of the cellulose triacetate optical film for the polaroid comprises the following steps: grafting modification, purification treatment, preparation of a film casting solution, and film formation and curing. According to the preparation method of the cellulose triacetate optical film for the polaroid, the hardness, toughness and wear resistance of the optical film can be effectively balanced while the situation that an existing blending modification method influences the optical performance, high-temperature and high-humidity stability and overall stability of the optical film can be avoided, and the overall mechanical performance of the optical film is further optimized.

The application discloses a preparation method of a cellulose triacetate-based binder and application of the binder in a sodium ion battery, and the method comprises the following steps: firstly, cellulose triacetate is stirred and dissolved in N-methyl pyrrolidone to obtain a solution with a proper viscosity; and then, montmorillonite is added into the solution and stirred to be fully dispersed, so as to obtain the cellulose triacetate-based binder. The cellulose triacetate-based binder prepared by the method has wide sodium battery cathode protection compatibility, high ionic conductivity and excellent adhesion, and can be used for constructing a high-performance sodium ion battery.

This invention discloses a high-adhesion-strength TAC film and its preparation method, belonging to the field of polymer protective film technology. The preparation method includes the following steps: mixing cellulose triacetate, a stabilizer, a plasticizer, a UV stabilizer, and a solvent, dissolving them under heating and stirring conditions to form a homogeneous TAC solution, and obtaining a TAC base film through casting and drying; subjecting the TAC base film to low-temperature plasma treatment, and then drying it at a temperature of 80-100℃ to obtain a high-adhesion-strength TAC film; the stabilizer is phenylboronic acid-terminated cellulose acetate. This invention provides a high-adhesion-strength TAC film and its preparation method. Through the synergistic effect of low-temperature plasma surface activation and phenylboronic acid-terminated cellulose acetate stabilizer, the surface adhesion performance of the TAC film is significantly improved while effectively solving the problem of decreased mechanical properties caused by plasma treatment, achieving a balance between high adhesion strength and excellent mechanical properties.

The invention discloses a gypsum product which comprises a gypsum body. The gypsum body is formed by gypsum slurry. The gypsum slurry comprises water, gypsum powder and a reinforcing agent. The reinforcing agent comprises a polymer component and a silicon compound component. The polymer component comprises cellulose triacetate, a polyester material and iodized polyvinyl alcohol. The iodinated polyvinyl alcohol is formed by polyvinyl alcohol and an iodine source. The gypsum product prepared by using the reinforcing agent has high compressive strength.

The invention discloses an optical film composition, a polaroid and a display device.The optical film composition comprises cellulose triacetate, a solvent and a cross-linking agent.The optical film composition comprises the cellulose triacetate and the cross-linking agent, the cross-linking agent contains epoxy groups, and the solvent is a solvent; the epoxy group can be subjected to ring-opening reaction and forms a three-dimensional network structure with the cellulose triacetate, so that the optical film with high hardness and transparency is prepared, and the problem that a polaroid is scratched by a backlight film is effectively prevented.

The invention relates to the technical field of optical thin film preparation, and discloses a preparation method of a cellulose triacetate optical thin film, which comprises the following steps: S1, raw material drying, S2, solvent preparation, S3, additive mixing and S4, film forming and obtaining. Cellulose triacetate is dissolved in an organic solvent to obtain a collodion solution, an automatic film coating machine is used for preparing the cellulose acetate optical film with a certain thickness, the film has excellent water resistance, durability and dimensional stability, the cellulose triacetate is well compatible with a plasticizer, an additive and an ultraviolet absorbent, and the film has excellent water resistance, durability and dimensional stability. The product is excellent in optical performance, good in mechanical performance and simple in process, can be suitable for multiple fields with high requirements for film performance, and avoids the problems that partial hydrolyzed cellulose triacetate adopted in a traditional preparation process can remain water, the flatness of the film surface is damaged, light is scattered, the optical performance of the film is reduced, and the service life of the film is prolonged. And adverse effects on the display effect are generated.

The invention discloses a laminated film assembly for application to glass surfaces, comprising a cellulose triacetate (CTA) layer designed to polarize light, a physical adhesion layer, and an intermediate layer containing an adhesive. The physical adhesion layer, devoid of chemical adhesives, utilizes mechanical adhesion and intermolecular forces to secure the assembly to the glass. This layer ensures ease of application and removal, addressing the limitations of traditional adhesive methods. The intermediate layer serves to bond the CTA layer to the physical adhesion layer, ensuring the structural integrity and functionality of the laminated film. This invention provides a novel approach to applying polarizing films to glass surfaces, offering significant improvements in installation efficiency, reusability, and versatility of use, particularly suitable for enhancing privacy and security on large video displays.

A filter rod for flue gas filtration is disclosed, the filter rod being made of bulky yarn; the bulky yarn comprises a central, high-shrinkage core yarn and a surrounding, low-shrinkage outer yarn, the outer yarn forming multiple sequentially connected loops along the core yarn. The core yarn is made from any one or a mixture of polylactic acid, polypropylene carbonate, polylactic-co-hydroxyacetic acid copolymer, polybutylene adipate / terephthalate, polycaprolactone, poly-β-hydroxybutyrate, polyhydroxyalkanoate, and polybutylene succinate. The outer yarn is made from any one or a mixture of cellulose fiber, cellulose monoacetate fiber, cellulose diacetate fiber, cellulose triacetate fiber, alginate fiber, chitosan fiber, milk silk fiber, soybean fiber, and silk fiber. This design not only replaces diacetate fiber in the application of tobacco filter rods but also frees up production capacity.

A water-resistant lens and eyeglasses. The water-resistant lens comprises a substrate layer, an adhesive, and a polarizing lens (500). The substrate layer is made of a polycarbonate film material, the adhesive is a photocurable resin adhesive, and the adhesive is provided between the substrate layer and the polarizing lens (500), such that the substrate layer and the polarizing lens (500) are bonded. In the water-resistant lens, the polycarbonate film material is used as a substrate to replace a traditional cellulose triacetate substrate, and the photocurable resin adhesive is used to replace a traditional water-based adhesive, thereby improving the problem of poor water resistance of traditional multi-layer laminated polarizing eyeglasses.

The invention relates to the technical field of polarizers, and discloses a pretreatment method of dichroic dye, a dye-based polarizer and a preparation method of the dichroic dye, and the pretreatment method comprises the following steps: filtering the dichroic dye through a mesh screen, mixing and stirring the dichroic dye with pure water, adding a boric acid solution to adjust the pH value to weak acidity, separating out the dye and dissolving impurities in water, and drying to obtain the dichroic dye. And filtering with filter cloth, and carrying out forced air drying to obtain a purified dichroism dye finished product. The method takes water as a medium in the whole process, does not need an organic solvent and is green and environment-friendly. When the purified dichroism dye finished product is used for preparing the polaroid, swelling, dip dyeing, stretching in a boric acid solution and drying are carried out on a PVA film to prepare a polaroid, then the polaroid is compounded with an anti-ultraviolet cellulose triacetate film, and gluing is carried out, so that the prepared dye system polaroid has high degree of polarization, high transmittance and excellent weather resistance; the optical performance change rate is less than or equal to 5% after dry heat and damp heat tests, no depolarization phenomenon exists, and the strict application requirements of high-end vehicle-mounted display and the like are perfectly met.

The invention discloses a processing method of triacetate fiber ice flower velvet. The processing method comprises the following steps: step 1, processing triacetate fiber yarns; step 2, carrying out warp knitting development on the ice flower velvet; step 3, pre-shaping; step 4, fuzzing and shearing; 5, refining and dyeing; step 6, reduction cleaning; step 7, drying and shaping; and step 8, inspecting and packaging. The fabric is refined and then dyed, in the dyeing process, the fabric is irregularly extruded and rubbed through a special nozzle, and then the ice flower effect is generated; cellulose triacetate fibers are designed to be compounded and subjected to yarn twisting processing, the problems of hairiness, cross section, warp rib, scratching and scraping breakage are solved, the triacetate filaments are compounded with the polyester filament grid yarn to be processed, the twist degree is increased, the tensile strength of the yarn is improved, the hand feeling and the draping feeling of the fabric are effectively improved, and the fabric has the advantages of being simple in structure, convenient to use and high in production efficiency by adopting a short-process yarn doubling method. The damage to the triacetate fiber yarn is further reduced, and the unity of excellent skin touch feeling and bony feeling is achieved.