17results about How to "Good discoloration effect" patented technology

The invention relates to a hydrochromic flexible intelligent thin film and a preparation method thereof. The hydrochromic flexible intelligent thin film can be used for preparing a passive driving flexible intelligent hydrochromic thin film (such as a window thin film). The method comprises the following steps: uniformly doping mesoporous microspheres modified by nano-sized hydrophilic groups into a polymer, curing, and carrying out hydrophilic treatment by using a polyethyleneimine aqueous solution to form the polymer / nano-microsphere composite film. Under different humidity conditions, water absorption / water loss is achieved, the refractive index is changed, the light transmittance of the material is correspondingly changed, incident illumination can be effectively enhanced / weakened through the light transmittance change responded by humidity, and the purpose of photo-thermal regulation and control is achieved. The preparation method is simple, and large-area production can be realized. The polymer / nano microsphere intelligent thin film has good self-regulation optical performance, high response speed, good mechanical performance, thermal stability and corrosion resistance, and the thin film has wide application potential in the scenes of buildings, greenhouses and the like as a passive driving flexible intelligent window.

The invention relates to the technical field of polyurethane fibers, in particular to a photochromic dye modified spandex fiber, when a color-changing group spiropyrane group is illuminated, a molecular structure and an electronic configuration are isomerized and rearranged to present a new color, and the spiropyrane color-changing group is grafted to a polyurethane long chain, so that the photochromic dye modified spandex fiber is obtained. Compared with a simple dyeing or physical blending addition spinning method, the photochromic spandex fiber has the advantages that the photochromic spandex fiber is deepened in color and becomes purple from pink or light purple, the photochromic spandex fiber gradually fades into light purple or pink after light is lost, and the photochromic spandex fiber is better in stability and can be used for washing clothes repeatedly in the process of washing the clothes repeatedly. Compared with the prior art, the polyurethane has the advantages that the original color can still be kept, the phenomena of color change, color fading and the like are avoided, and spiropyrane groups belonging to hard-segment materials are grafted at two ends of the polyurethane, so that the glass-transition temperature of the polyurethane is increased, and the spandex fiber has better thermal stability.

The utility model relates to the technical field of electrochromism, in particular to a base material structure, an electrochromism device, an electrochromism device and a terminal product. The base material structure comprises a conductive layer, a confluence layer, a base material layer and a dielectric layer. The conductive layer has a bearing surface. The confluence layer is arranged on the bearing surface; the base material layer is arranged on the bearing surface and is at least located on one side of the extension direction of the confluence layer; the dielectric layer is disposed on the bearing surface, and the dielectric layer is located between the confluence layer and the base material layer. The dielectric layer is arranged between the confluence layer and the base material layer, and the dielectric layer plays a role in separating the confluence layer from the base material layer, so that the base material layer is prevented from being in direct contact with the confluence layer, the surface of the confluence layer repels the base material layer, and the base material near the surface of the bus bar is not uniform; the technical problem that in the prior art, a base material is not uniform when being close to the surface of a confluence layer, and the optical performance of a device is affected is solved.

This invention mainly provides a mechanochromic polyester polyol, its preparation method, and its uses. The mechanochromic polyester polyol is prepared by esterification and polycondensation reactions of raw materials comprising 100 moles of a diacid / anhydride, 110-400 moles of a polyol, and 5-30 moles of a trihydroxyrhodamine derivative. The polyester polyol prepared by this invention contains mechanosensitive groups, aromatic rings, and a bialicyclic structure. The resulting polyurethane material exhibits excellent mechanochromic properties and high wear resistance.

The invention discloses a production method of a variable multicolor carbon dioxide concentration indicator, and belongs to the field of carbon dioxide detection.The production method comprises the steps that carbon dioxide with the purity of 95% is introduced and stirred, the initial reaction performance of the carbon dioxide indicator is improved, and a composite indicator is added to improve the color changing interval; the added sodium chloride is beneficial to improving the color changing effect under the low-temperature condition, the added glycerol is beneficial to improving the high-temperature use performance, reducing volatilization and improving the stability, and after being packaged in a high-breathability and high-strength packaging material, an effective color changing effect can be achieved, deliquescence and influence or pollution to surrounding products are not prone to occurring, the excellent color changing effect can be achieved under the low-temperature condition, and the service life of the product is prolonged. The carbon dioxide indicator is blue under the carbon dioxide concentration of 0-10%, purple under the carbon dioxide concentration of 10%-20%, green under the carbon dioxide concentration of 20%-50%, yellow under the carbon dioxide concentration of 50%-90% and red under the carbon dioxide concentration of 90%-100%, and has more excellent utilization value and economic value.

The application discloses a kind of X-ray irradiation discoloration recovery test methods and application of feldspar crystal, it is related to radiation detection and irradiation metrology technical field.Natural colorless transparent feldspar or natural light color transparent feldspar is irradiated with different X-ray radiation dose, its color changes from colorless transparent or light color transparent to gray, and the gray scale is related to irradiation dose;After the color of the feldspar is changed, it is treated at different temperatures, or irradiated with visible light LED, to seek the best recovery parameters to restore its color to the original color.The method of the application can evaluate the discoloration performance of feldspar crystal and seek its best recovery parameters.The discoloration effect of natural colorless or light color transparent feldspar is obvious, easy to observe with naked eye, and the gray scale is related to the irradiation dose, which can also meet the needs of "transparent observation and light protection" in radiation protection scenarios.

The invention discloses a physical method for promoting liquidambar formosana hance to become red and application of the physical method in forest management. The physical method comprises any one of side branch thin filament cutting, side branch xylem girdling and trunk base xylem girdling. Lateral branch fine filament cutting is to select lateral branches of three-year-old sweetgum plants and tightly wind nylon fine filaments in the middles of the lateral branches for three circles; the step of girdling the xylem on the side branch is that the side branch of a triennial sweetgum plant is selected, girdling is carried out for one circle at the position 3 cm away from the base part of the side branch, the girdling width is 3 cm, and then the girdled wound is wrapped with a preservative film; the step of girdling the xylem at the base part of the trunk comprises the following steps: selecting a triennial sweetgum plant, girdling a circle at the position 10 cm away from the base part of the trunk, and wrapping the girdled wound with a preservative film. According to the method, a physical method is adopted, chemical promoting agents are not used, it can also be guaranteed that the whole forest stand grows continuously, the whole plant color changing effect is good, directional color changing of a single plant can be achieved, and the advanced, timed and positioned color changing effect is achieved.

The invention discloses an antibacterial discoloring finishing agent and a preparation method thereof, and belongs to the technical field of functional clothing, Ti3AlC2 powder is dispersed in a LiF solution of hydrochloric acid, continuous reaction is performed, and an Al layer is selectively dissolved to form Ti3C2Tx MXene. The preparation method comprises the following steps: purifying and stripping prepared MXene by adopting centrifugal cleaning, ultrasonic treatment and other methods to obtain an MXene micron sheet, and combining a color-changing antibacterial microcapsule which takes chitosan prepared by a cross-linking method as a shell material and takes a ternary thermochromic component as a core material onto the micron sheet to form the color-changing antibacterial functionalized MXene. The composite material is mixed with a polyvinyl alcohol (PVA) adhesive to prepare the color-changing antibacterial multifunctional finishing agent. The finishing agent is applied to the surface of the knitted garment through a dipping method, so that the sports knitted garment is endowed with excellent color-changing and antibacterial properties.

The invention discloses a photochromic solution, a photochromic cellulose acetate film and a preparation method and application of the photochromic cellulose acetate film and belongs to the technical field of photochromism, and the photochromic solution is prepared from methylene blue and triethanolamine. The obtained photochromic solution has excellent responsiveness under visible light, meanwhile, the raw material cost is low, the preparation process is simple, the color changing effect is obvious, the color fading rate is higher, obvious color changes are shown under light source irradiation, and the photochromic solution has wide application prospects and can be used in the fields of sensors, intelligent materials and the like.

The invention provides a flexible humidity photoluminescent fiber as well as a preparation method and application thereof, and relates to the technical field of photoluminescent fiber preparation, the preparation method comprises the following steps: S1, firstly, preparing a 2-aminoterephthalic acid solution by taking N, N-dimethylformamide as a solvent; then, adding a rare earth metal organic framework precursor to obtain a precursor mixed solution; s2, performing ultrasonic treatment on the precursor mixed solution; s3, putting the pretreated fiber into the precursor mixed solution subjected to ultrasonic treatment, and carrying out hydrothermal reaction; and S4, after the hydrothermal reaction is finished and the solution is cooled to room temperature, taking out the fiber, and carrying out cleaning and drying post-treatment to obtain the flexible humidity photoluminescent fiber. The obtained flexible humidity photoluminescent fiber has good flexibility, fast response time, excellent stability and luminescence brightness, and has good application prospects in the field of intelligent wearable and the field of visual intelligent fibers.

This invention discloses a photochromic material incorporating a HOF (Hormone-Organic-Flatform) framework, its preparation method, and its applications. Belonging to the field of organic solid-state photochromic materials technology, it utilizes a host-guest eutectic method to load photochromic molecules onto the HOF framework material. This invention also discloses the photochromic material prepared by the above method, and its applications in information storage encryption and anti-counterfeiting. While achieving photochromism, the host-guest eutectic method exhibits a faster photoresponse rate and better photochromic performance compared to physical adsorption methods, showing greater potential in anti-counterfeiting and excellent information storage encryption capabilities.

The invention provides a polyheptylimido photochromic film and a preparation method thereof, and relates to the technical field of intelligent materials. The invention relates to a polyheptylimide photochromic film, which comprises a film substrate, a light reducing agent and a redox dye, the light reducing agent is polyheptylimide, and the redox dye is methylene blue. The polyheptylimide can be excited by 405nm visible light to generate photo-induced electrons, methylene blue is reduced and decolored, the film is changed from blue to white, when oxygen exists in the environment, the film adsorbs oxygen, the decolored methylene blue is oxidized by the oxygen to recover the color, the film is recovered from white to blue, and naked eye detection of the oxygen is realized. The oxygen concentration change from 0% to 20% can be detected, and the sensitivity is high; the film can be completely decolorized after being excited by light for 8 seconds, the color recovery time is 12 minutes in an air environment, and the response time is short; the repetition rate reaches 20 times, and the detection stability is good.

Embodiments of the present invention relate to a curable transparent resin composition and various articles derived therefrom. The curable transparent resin composition comprises: (A) a fluororesin containing one or more carboxyl groups; and (B) an epoxy resin. This curable transparent resin composition exhibits excellent dry film properties, heat resistance, transparency, adhesion, and discoloration resistance through the combination of the two components, and thus enables the formation of a thin film having an excellent adhesion and discoloration resistance while having a light transmittance at a similar level to that of a silicone resin composition that is commonly used for display applications. Thus, the curable transparent resin composition of the present invention can be used not only as a display component requiring excellent light transmittance, but also as a variety of applications such as an LED sealing material, a glass adhesive, a dry film, or a chip bonding material, which require excellent adhesion and discoloration resistance.

The invention discloses a preparation method of a thermochromic composite insulating coating with high electric strength resistance, which is characterized by comprising the following steps: S1, preparing a thermochromic microcapsule, specifically comprising the following steps: 1) preparing an aqueous phase solution, 2) preparing an oil phase solution, and 3) preparing the thermochromic microcapsule; and S2, preparing the thermochromic composite insulating coating with high electric strength based on the thermochromic microcapsules. When the thermochromic composite insulating coating with high electric strength prepared by the invention is used for coating a cable joint, when the cable joint is overheated (higher than 65 DEG C), the color of the coating is obviously changed from blue to transparent, and live detection of local overheating of the cable joint can be realized.

The invention relates to dimming glass, a display system and a carrying tool. The dimming glass comprises a first glass layer, an ultraviolet isolation layer, a color changing layer and a second glass layer which are sequentially arranged in a stacked mode, a heating assembly is arranged between the first glass layer and the second glass layer, and the color changing layer is composed of a photochromic material and a thermochromic material. The transmittance of the excited region of the color changing layer is reduced along with the increase of the temperature in a preset temperature range. According to the dimming glass, the color changing layer composed of the photochromic material and the thermochromic material is arranged in the dimming glass, so that the transmittance of the color changing layer of the dimming glass is reduced along with the increase of the temperature within the preset temperature range, the color changing layer still keeps a good color changing effect, and the influence of the temperature on the color changing effect is reduced. Meanwhile, by arranging the ultraviolet isolation layer, ultraviolet light transmitted from the first glass layer is isolated, and the influence of external ultraviolet light on the color changing layer is reduced.

The invention relates to the technical field of electrochromic devices, in particular to an integrated electrochromic device and a preparation method thereof. The integrated electrochromic device sequentially comprises a first transparent conductive layer, a mixed electrochromic layer and a second transparent conductive layer, the mixed electrochromic layer comprises UV glue, a solvent, an electrochromic material and an ionic agent. The integrated electrochromic device can be prepared through UV curing, the requirement for the preparation technology of the solid-state electrochromic device is lowered, meanwhile, the electrochromic material and the electrolyte are mixed in the same adhesive layer, the thickness of the adhesive layer can be reduced, the solid-state electrochromic device can be prepared easily and efficiently, and the manufacturing cost of the solid-state electrochromic device is reduced. In addition, no volatile solvent exists in the preparation process, no harm is caused to people and the environment, and industrialization of solid electrochromic devices is facilitated. Test results show that the prepared integrated electrochromic device is high in response speed, excellent in color changing performance, high in transparency and friendly to human and environment.

The present application relates to the technical field of textile, and particularly refers to a multi-comb illusion jacquard fabric and a weaving method thereof. The fabric is a single-sided fabric, which is woven by a single needle bed jacquard machine and includes four layers of weaving structures. The weaving structures include, in sequence, a face yarn layer with a planar structure, a ground comb jacquard layer connected to the face yarn layer and including longitudinally convex strip parts and longitudinally concave strip parts which are spaced apart along the lateral direction of the fabric, an illusion jacquard layer connected to the ground comb jacquard layer and including a plurality of float thread structures, each of which extends along the longitudinal direction of the fabric and the plurality of float thread structures are distributed on the left side or the right side of the longitudinally convex strip parts of the ground comb jacquard layer, and a presser layer connected to the illusion jacquard layer and used for fixing the float thread structures. The present application first proposes a single-layer color-changing mesh fabric, which has excellent light and thin breathable properties and a stable fabric structure, and is a once innovation of combining warp-knitted mesh fabric with color-changing and jacquard, and the process is environmentally friendly.