23 results about "Hydrophobic matrix" patented technology

The invention discloses a photovoltaics light-transfer coating liquid, which comprises diphenyl anthracene and derivatives thereof, SiO2 silica sol and a solvent, the low-temperature light conversion coating liquid is coated on the glass substrate, the hydrophobic layer is continuously coated on the glass substrate, and the hydrophobic matrix resin is utilized to prevent the component from being eroded by water when the component is used outdoors, so that on one hand, the light conversion substance can be protected from being eroded or decomposed by water, and on the other hand, the glass surface is endowed with a self-cleaning function.

A biomimetic desert beetle self-transporting bone microgrinding head and a preparation process thereof, and relates to the field of medical instruments. The microgrinding head includes a hydrophobic matrix or a matrix having a hydrophobic plating layer. The matrix has a hydrophobic surface on which several hydrophilic abrasive particles are uniformly distributed. A process for preparing the microgrinding head is: selecting diamond abrasive particles and conducting oxidization treatment of the diamond abrasive particles; forming a hydrophobic matrix by scanning a surface of the matrix with a laser; or alternatively obtaining a hydrophobic plating layer by a chemical modification method; and combining the oxidized diamond abrasive particles with the hydrophobic matrix or the hydrophobic plating layer by electroplating to obtain a microgrinding head. The microgrinding head utilizes to achieve an effect of being capable of cooling rapidly and capturing cooling medium droplets and effectively transporting the droplets to a grinding arc region.

The invention belongs to the field of intelligent degradable food packaging materials, and particularly relates to a pH response type intelligent degradable packaging film and a preparation method and application thereof. According to the invention, PBAT / PLA blended resin is used as a degradable matrix, a natural pH sensitive indicator alizarin is used as an intelligent response unit, no auxiliary component is added, and the high-performance pH response type intelligent degradable packaging film is prepared by controlling an alizarin solvent pre-dispersion-gradient mixing process and melt blending parameters. According to the invention, through collaborative proportion optimization of PBAT and PLA, the balance of flexibility and rigidity of the membrane is ensured, a uniformly dispersed microenvironment is provided for alizarin, and the core problem of agglomeration of alizarin in a hydrophobic matrix is solved. The packaging film can visually monitor the corruption degree of perishable food such as fresh chicken breast and aquatic products in real time through color change, the preparation process is simple, the cost is controllable, the safety is high, and a brand new technical path is provided for greenization and intelligentization of food packaging.

The invention discloses a preparation method and application of a hydrophilic separation medium, the hydrophilic separation medium comprises a polymer hydrophilic medium and a hydrophilic group modified on the surface of the medium, the solid medium is PS / GMA / DVB microspheres, and when in use, the hydrophobic separation medium comprises a PS / GMA / DVB solid matrix and a hydrophilic coating layer coated on the surface of the PS / GMA / DVB solid matrix. The hydrophilic coating layer is used for modifying hydrophilic groups through epoxy groups and benzene ring chemical bonds, and the hydrophilic coating layer is introduced to the surface of the PS / GMA / DVB solid substrate, so that the surface of the hydrophobic PS / GMA / DVB solid substrate is effectively coated in the coating layer, and therefore, the hydrophilic action separation medium can avoid the adverse effect of the hydrophobic substrate on separation of polysaccharide, and the separation efficiency of the PS / GMA / DVB solid substrate is improved. The PS / GMA / DVB solid matrix is a polymer microsphere prepared by taking a polystyrene-glycidyl methacrylate-divinyl benzene polymer as a matrix, and compared with a silica gel matrix, the PS / GMA / DVB solid matrix can enable the separation medium to have more excellent chemical stability and modification activity.

A miniaturized, automated method for controlled printing of large arrays of nano- to femtoliter droplets by actively transporting mother droplets over hydrophilic-in-hydrophobic (“HIH”) micropatches. The technology uses single or double-plate devices where mother droplets can be actuated and HIH micropatches on one or both plates of the device where the droplets are printed. Due to the selective wettability of the hydrophilic micropatches in a hydrophobic matrix, large nano- to femtoliter droplet arrays are created when mother droplets are transported over the arrays. The parent droplets are moved by various droplet actuation principles. Also, a method using two plates placed one top another while being separated by a spacer. One plate is dedicated to confirming and guiding parent droplets by using hydrophilic patches in a hydrophobic matrix, while the other plate contains HIH arrays for printing of the droplets. When the parent droplet guidance plate is rotated over the plate dedicated to printing of nano- to femtoliter droplets, the droplets are dispensed inside the HIH array utilizing their selective wettability. The methods allow the parent droplets to move over the HIH arrays many times, providing advantages for performing bio-assays or miniaturized materials synthesis in nano- to femtoliter sized droplets. With controlled evaporation of the dispensed droplets of solution, large arrays of printed material can be generated in seconds. The methods provide a nano- to femtoliter droplet printing technique for a wide variety of applications, e.g., protein- or cell-based bio-assays or printing of crystalline structures, suspensions of nanoparticles or microelectronic components.

The invention relates to the field of food preservation, and discloses a food-grade long-acting preservative based on a seaweed extract and a process thereof, the preservative is prepared from organic and inorganic hybrid antibacterial micro powder, epoxidized soybean oil and low-density polyethylene or polypropylene carrier resin; the micro powder is prepared by constructing a compact dual network by utilizing zinc ion coordination cross-linking and polylysine electrostatic complexing, stably embedding epigallocatechin gallate and performing spray drying. The process comprises the following steps: inducing epoxidized soybean oil to be grafted on the surface of micro powder in situ by adopting a high-speed shearing heat effect for hydrophobic modification, and then melting, extruding and granulating with resin. By means of hybrid network construction and interface grafting technologies, the problems that natural active ingredients are poor in heat resistance and uneven in dispersion in a hydrophobic matrix are effectively solved, stable and long-acting slow release of antibacterial components is achieved, and the antibacterial packaging film has the advantages of being broad in spectrum, efficient, safe, non-toxic, excellent in processing performance and the like and is suitable for fresh-keeping packaging of various foods.

The present invention relates to a unique coating comprising a hydrophobic matrix of fatty acids and a water-soluble weak organic acid. During acidic conditions (e.g., pH≤3), the weak organic acid is protonated and is almost insoluble or slowly solubilized, while at neutral to alkaline pH (e.g., pH 6 or higher) it is deprotonated and more easily solubilized, allowing for the release of the active ingredient. All of the materials in the coating are soluble in organic solvents and, preferably, alcohols. In at least one embodiment, the coating is used as an enteric coating. In at least one embodiment, the coating is evenly dispersed without the inclusion of a plasticizer, emulsifier, or emulsifying agent.

The present application relates to the technical field of coating compositions, and discloses a high-selectivity gas-sensitive coating composition for an electronic nose chip of a humanoid robot, which comprises 40-60 parts of a film-forming base selected from polyvinylidene fluoride or fluorovinyl-vinyl ether alternating copolymer; 15-25 parts of a gas-sensitive filler selected from metal organic framework ZIF-8; 2-5 parts of a conductive agent selected from unmodified multi-walled carbon nanotubes; 1-3 parts of a compatibility regulator selected from perfluorooctyl triethoxysilane; and a binary solvent system composed of a good solvent for dissolving the film-forming base and a non-solvent for dispersing the gas-sensitive filler but not dissolving the film-forming base. The present application utilizes the difference in volatilization rate of the good solvent and the non-solvent and the difference in surface energy between components to induce phase separation, so that the conductive agent is directionally distributed at the phase interface between the gas-sensitive filler and the film-forming base, a heterogeneous conductive network coated with a hydrophobic matrix is constructed, the mechanical strength of the coating is maintained, the exponential resistance response to trace gases is realized, and the interference of high-humidity environment is eliminated.

The present disclosure relates to a taste-masking microcapsule composition. The composition comprises a core portion encapsulated by a shell portion. The core portion comprises an active pharmaceutical ingredient (API) and one or more excipients. The shell portion comprises a hydrophobic matrix and a pH-responsive material. The microcapsule compositions prevent API release at the more neutral pH levels in the oral cavity, but upon exposure to pH levels of the stomach, the pH-responsive material becomes soluble thereby permitting release of the API.

The invention relates to the technical field of polymer and nano particle compounding, and discloses a nano-silica-added enhanced PVB (polyvinyl butyral) composite material which comprises polyvinyl butyral resin, a plasticizer, epoxy vegetable oil, a titanium source, alcohol amine, a boron source and hydrophilic nano-silica. According to the preparation method, active precursor slurry is prepared through liquid phase component pre-coordination, micro pre-dispersion is achieved through solid-liquid infiltration curing, and finally in-situ surface modification and forming are completed through vacuum-assisted reactive extrusion. The reaction activity of the metal organic compound is regulated and controlled through competitive coordination of alkylol amine, a titanium-boron heteronuclear double-dynamic network is constructed at an interface, and the problems that hydrophilic nanoparticles are difficult to disperse in a hydrophobic matrix and are prone to gelation in the processing process are effectively solved. The obtained composite material has excellent optical transparency, high storage modulus and impact toughness, and is suitable for high-performance safety glass intermediate films.

The invention discloses a polylactic acid antibacterial film containing bamboo fibers and a preparation method of the polylactic acid antibacterial film, and relates to the technical field of antibacterial films. The composite material is prepared from 75-88 parts of polylactic acid, 6-18 parts of a modified bamboo fiber structure and 4-8 parts of epoxy-terminated polycaprolactone, according to the modified bamboo fiber structure, nano fibrillated bamboo fiber serves as an inner core, an inner layer is an epoxy-terminated polylactic acid grafting layer covalently grafted to the surface of the nano fibrillated bamboo fiber, and an outer layer is a zinc-coordinated tannic acid nano-dot loading layer growing on the surface of the grafting layer in situ. Polylactic acid is film-forming matrix resin. The modified bamboo fiber structure is additionally arranged, and the nano fibrillated bamboo fiber is used as an inner core supporting framework, so that the problems that conventional raw bamboo fiber is poor in compatibility with a polylactic acid matrix, easy to agglomerate and uneven in dispersion are solved; an interface bonding bridge is built by virtue of the outer grafting layer, so that an interface barrier between a bamboo fiber hydrophilic group and a polylactic acid hydrophobic matrix is eliminated, stable bonding of the matrix and the fiber is realized, and the overall mechanical strength and the structural uniformity and stability of the film are improved.

The present application belongs to the technical field of hydrogel materials, and relates to a hydrophobic-hydrophilic interface time sequence reconfiguration hydrogel, a preparation method thereof and application thereof in promoting gastric mucosa wound healing. The hydrophobic-hydrophilic interface time sequence reconfiguration hydrogel is formed by a hydrophobic matrix and bioadhesive microparticles according to a specific mass ratio, and the hydrophobic matrix is composed of a hydrophobic pH-responsive drug release porous liquid and a hydrophobic hyperbranched polyethylene oily matrix according to a mass ratio of 1:5-1:20. The hydrophobic-hydrophilic interface time sequence reconfiguration hydrogel has the advantages of instant and strong tissue sealing and acid-inhibiting wound repair, and is used for promoting gastric mucosa wound healing.

The invention relates to the technical field of coating compositions, and discloses a high-selectivity gas-sensitive coating composition for an electronic nose chip of a humanoid robot, and the high-selectivity gas-sensitive coating composition comprises: 40-60 parts of a film-forming matrix selected from polyvinylidene fluoride or a vinyl fluoride-vinyl ether alternating copolymer; 15 to 25 parts of a gas sensitive filler selected from a metal organic framework ZIF-8; 2 to 5 parts of a conductive agent selected from unmodified multi-walled carbon nanotubes; 1 to 3 parts of a compatibility regulator selected from the group consisting of perfluorooctyltriethoxysilane; the two-component solvent system is composed of a good solvent for dissolving the film-forming substrate and a non-solvent for dispersing the gas-sensitive filler but not dissolving the film-forming substrate, and the two-component solvent system is composed of a good solvent for dissolving the film-forming substrate and a non-solvent for dispersing the gas-sensitive filler, so that the conductive agent is directionally distributed at the phase interface of the gas-sensitive filler and the film-forming substrate by utilizing the volatilization rate difference between the good solvent and the non-solvent and the surface energy difference between components; a heterogeneous conductive network coated with a hydrophobic matrix is constructed, so that the mechanical strength of the coating is maintained, the exponential resistance response to trace gas is realized, and the interference of a high-humidity environment is eliminated.

The invention relates to the technical field of constructional engineering material manufacturing, and discloses a processing technology of a hot-melt glue-spraying type cement-based mortar composite cement blanket, which comprises the following steps of: unwinding and aligning upper-layer geotechnical cloth and lower-layer geotechnical cloth, spreading modified cement-based mortar dry powder on the surface of the lower-layer geotechnical cloth, leveling and pre-compacting; covering upper-layer geotechnical cloth and performing composite needling to form a composite blanket; after the composite blanket is subjected to hot rolling treatment, phase separation type modified hot melt adhesive is spirally sprayed to one side of the lower-layer geotechnical cloth; then feeding into a heating channel for gradient temperature control annealing treatment, and inducing the gel layer to be separated to form a communicated pore channel; and finally, inorganic mineral powder is sprayed to the surface of the adhesive layer to carry out surface in-situ passivation treatment, and cooling, coiling and packaging are carried out. A gradient temperature control annealing process is matched with a phase separation type hot melt adhesive system, a microscopic communicated pore channel network penetrating through a hydrophobic matrix is constructed, powder leakage can be effectively blocked, and rapid hydration hardening of a core layer material is guaranteed.

This invention relates to the field of natural product extraction technology, and discloses a method for extracting pectin and protein from sunflower discs, comprising the following steps: S1, hydrophobic matrix construction: fresh sunflower discs are pulverized and dispersed in N,N-dimethylcyclohexylamine, hydrophobic Schiff base ligands and β-cyclodextrin are added, and the mixture is homogeneous at 20℃-30℃ and 0.1MPa to obtain a hydrophobic mixed slurry; S2, phase change extraction and in-situ chelation: carbon dioxide gas is introduced into the hydrophobic mixed slurry, and the system pressure is maintained at 0.3MPa to 0.6MPa; S3, microemulsion fractionation; S4, product recovery. By directly using fresh sunflower discs as raw materials and utilizing the hydrophobic properties of N,N-dimethylcyclohexylamine to exchange cell water in situ at room temperature and pressure, an anhydrous hydrophobic matrix is ​​constructed, preserving the nitrogen solubility index and bioactivity of sunflower disc proteins, while maintaining the natural molecular structure of pectin.

The present invention relates to a unique coating comprising a hydrophobic matrix of fatty acids and a water-soluble weak organic acid. During acidic conditions (e.g., pH≤3), the weak organic acid is protonated and is almost insoluble or slowly solubilized, while at neutral to alkaline pH (e.g., pH 6 or higher) it is deprotonated and more easily solubilized, allowing for the release of the active ingredient. All of the materials in the coating are soluble in organic solvents and, preferably, alcohols. In at least one embodiment, the coating is used as an enteric coating. In at least one embodiment, the coating is evenly dispersed without the inclusion of a plasticizer, emulsifier, or emulsifying agent.

The present application provides a waterproof profiled adhesive tape, which comprises a substrate layer and an adhesive layer, the edge of the substrate layer is not linear but curved, the adhesive layer comprises a continuous hydrophobic matrix phase and a hydrophilic skeleton phase, the continuous hydrophobic matrix phase is composed of a hydrophobic mixture A, forming a main continuous phase of the adhesive tape, providing adhesion and basic water resistance; the hydrophilic skeleton phase is composed of an electrospun membrane loaded with superabsorbent microparticles, which is dispersed in the hydrophobic matrix phase; wherein the hydrophilic skeleton phase has water-swelling characteristics, maintains the skeleton form in the dry state, and undergoes anisotropic or isotropic volume expansion in the water state, which produces a compression densification effect on the surrounding hydrophobic matrix phase, and at the same time, the skeleton itself swells to fill the interfacial gap, forming a water molecule diffusion blocking mechanism.

The invention discloses a damp-proof antibacterial environment-friendly cigarette packaging framework paper material and a compounding method thereof, and belongs to the technical field of cigarette packaging materials. The material comprises a paper base and a heterogeneous discrete functional island structure functional coating compounded on the surface of the paper base, core components comprise a humidity response driving unit, a porous elastic hydrophobic matrix and an interface stress transfer unit, and the material is prepared through a step-by-step asynchronous deposition process. According to the invention, the humidity response swelling characteristic of the hydrogel microspheres is reversely utilized, a humidity signal is converted into a mechanical force to regulate and control the on-off of a matrix pore channel, the self-adaptive moisture-proof function of high humidity and high barrier and low humidity and air permeability is realized, the antibacterial function can be synchronously activated in a matched manner, the core contradiction that high barrier and air permeability of a traditional static material cannot be realized at the same time is fundamentally solved, and the preparation method is simple and convenient. The material is environment-friendly and degradable, and is suitable for industrial mass production.

The invention relates to 3D-printed controlled-release solid oral pharmaceutical compositions comprising a hydrophobic matrix comprising cavities filled with air, allowing flotation in the stomach, one or more regions within the matrix comprising a pharmaceutical, one or more regions within the matrix comprising a swellable material, wherein optionally the one or more regions within the matrix comprise a swellable material and a pharmaceutical one or more fracture zones within the matrix with weaker or less dense structure, one or more hydrophilic channels within the matrix fluidly connecting the outside of the composition with a region within the matrix comprising the swellable material or the pharmaceutical.

This invention provides a superhydrophobic anti-icing coating with photoelectric thermal coupling effect and its preparation method, relating to the field of functional coating materials and surface protection technology. The method involves dissolving polydimethylsiloxane in ethanol. This superhydrophobic anti-icing coating with photoelectric thermal coupling effect and its preparation method synergistically integrate a low surface energy hydrophobic matrix formed by polydimethylsiloxane, a micro-nano multi-level rough structure constructed from micron-sized zinc oxide and nano-sized silica, and a photoelectric thermal response network formed by modified carbon fibers. Combined with a spray curing process, a composite anti-icing coating is constructed on the substrate surface, achieving a unified superhydrophobic properties, photothermal / electrothermal heating capacity, and anti-icing and de-icing functions. This results in a coating that effectively delays the icing process, reduces ice adhesion strength, and possesses rapid active de-icing capability, thus improving the overall performance of the anti-icing coating.

The invention relates to the technical field of traditional Chinese medicine pharmacy, and discloses a traditional Chinese medicine patch for treating polycystic ovarian syndrome, a medicine layer of the patch adopts a double-layer structure, and comprises a medicine substrate storage layer far away from a skin application side and an enzymolysis catalysis and sequential release layer facing the skin application side. The drug substrate storage layer comprises a hydrophobic matrix and a traditional Chinese medicine prodrug; the enzymolysis catalysis and sequential release layer comprises a hydrophilic matrix, a biological enzyme source, an osmotic pressure regulator and a pH-sensitive sequential release unit. During application, the application agent drives the prodrug to migrate by utilizing osmotic pressure, and is subjected to in-situ enzymolysis on the skin surface to form an active product which is easy for transdermal absorption; the acidic material generated by the enzymatic reaction further triggers the pH sensitive unit to release the second drug. The transdermal absorption rate of macromolecular traditional Chinese medicine ingredients is improved through in-situ conversion, programmed sequential release of the two medicines is achieved, the synergistic effect is enhanced, and meanwhile the good storage stability of the product is guaranteed through a double-layer physical isolation structure.

This invention discloses a multi-dimensional composite photothermal hydrophobic anti-icing coating and its preparation method. The coating comprises a flexible hydrophobic matrix and a photothermal material uniformly dispersed within the flexible hydrophobic matrix; the flexible hydrophobic matrix is ​​a polydimethylsiloxane (PDMS) matrix; the photothermal material is a ternary composite photothermal material comprising titanium nitride (TiN), carbon nanotubes (CNTs), and MXene, with a silanized surface; wherein the mass ratio of TiN, CNTs, and MXene is (0.5–2):(0.5–2):(0.5–1). This coating enhances photothermal performance through broad-spectrum light absorption and a highly efficient thermally conductive network. Simultaneously, based on multi-scale effects, surface roughening results in a robust hydrophobic surface, integrating efficient photothermal de-icing and passive hydrophobic anti-icing functions, and exhibiting excellent durability. The preparation method includes material modification, composite coating preparation, coating, and curing steps; the process is simple and easily scalable.

The invention belongs to the technical field of material surface treatment, and particularly relates to a baking appliance surface hydrophobic coating, a preparation method thereof and a baking appliance. The preparation method comprises the following steps: carrying out high-speed shearing emulsification on polymethylhydrosiloxane, Tween 80 and deionized water to form an oil-in-water emulsion, and then adding fumed alumina and fumed silica nanoparticles to obtain a composite emulsion; performing centrifugal treatment to obtain a paste concentrate; the concentrate and finish paint are mixed and dispersed to prepare slurry, the slurry is sprayed on the surface of a base material, and high-temperature curing forming is carried out. A wear-resistant structure with PMHS as a hydrophobic matrix and micron aluminum oxide and nano silicon dioxide as a composite reinforcement phase is successfully constructed through an oil-in-water emulsion method, the wear resistance of the coating can be improved, PMHS is used for surface modification and high-temperature curing of gas-phase aluminum oxide micron particles and gas-phase silicon dioxide nano particles to form a hydrophobic network, and the wear resistance of the coating is improved. And hydrophobization of the stainless steel surface can be achieved in a convenient, harmless and low-cost mode.