15 results about "Surface modified" patented technology

The systems and methods described herein relate to solid-state light sources capable of generating radiation beams for, but not limited to, the treatment of surfaces, bulk materials, films, and coatings. The solid-state ultraviolet source optically combines the light output of at least two and preferably as many four independently controllable discrete solid-state light emitters to produce a light beam that has a controllable multi-wavelength spectrum over a wide range of wavelengths (i.e. deep UV to near-IR). Specific features of this light source permit changes in the spectral, spatial and temporal distribution of light for use in curing, surface modification and other applications.

The invention discloses a method of amphipathy fluorinated multipolymer modifying the surface of tetrafluoroethylene blownfilm. The fluorinated multipolymer is achieved by aggregating of fluorinated (methyl) ACR monomer A and (methyl) ACR monomer B. The preparing and modifying tetrafluoroethylene blownfilm is that: firstly, aggregate the fluorinated (methyl) ACR monomer A and (methyl) ACR monomer B to achieve amphipathy fluorinated random or amphiphilic block or triblock copolymer; then compound the copolymer with the tetrafluoroethylene blownfilm by the way of coating, to prepare hydrophile tetrafluoroethylene blownfilm which can achieve by stretching in one-way or two-way. The prepared hydrophile tetrafluoroethylene blownfilm not only has the characters of age resistant, resistant to chemical attack and wide applicable temperature, but also has good hydrophilicity, large water flux. The method can be suitable for the surface modifying of tabular, tubular and hollow fiber tetrafluoroethylene blownfilm.

The invention relates to super-hydrophobic film materials and provides a super-hydrophobic polypropylene film and a preparation method thereof. The super-hydrophobic polypropylene film is characterized in that an isotactic polypropylene-b-polyethylene glycol diblock copolymer serves as a surface modifier to construct a micronano composite structure on the surface of the polypropylene film. The preparation method includes steps: dissolving the isotactic polypropylene-b-polyethylene glycol diblock copolymer in an alkane solvent to obtain a polymer solution, coating to the surface of the polypropylene film by spin coating, putting the polypropylene film subjected to surface modification into a vacuum drying oven, and performing vacuum drying to obtain the super-hydrophobic polypropylene film. The super-hydrophobic polypropylene film and the preparation method thereof have advantages that simplicity in operation is achieved, complex chemical treatment is avoided, and expensive equipment is not needed; the preparation method is high in efficiency, feasible, environment friendly, low in cost and easy for industrialization; the prepared super-hydrophobic polypropylene film has excellent surface structural stability.

Aspects of the present disclosure include a solid phase sorbent for preparation of analytical samples. The solid phase sorbent includes particles that are surface modified with an α-cyclodextrin moiety. Also provided is a method of reducing matrix effects in an analytical sample. In some embodiments, the method includes contacting a sample comprising a matrix-interfering agent and an analyte with α-cyclodextrin modified particles to produce a contacted sample wherein the matrix-interfering agent binds to the α-cyclodextrin modified particles; separating the α-cyclodextrin modified particles from the contacted sample to produce a matrix-reduced composition; and detecting the analyte in the matrix-reduced composition. Systems for practicing the subject methods are provided that include the subject solid phase sorbent.

A surface modify ternary cathode material is prepared by coat a surface modified layer on that core of the ternary cathode material; The ternary cathode material core is Li1+kNixCoyMzO2, wherein M isone of Al, Mn, Ti and Mg, and the ternary cathode material core is Li1+kNixCoyMzO2, wherein M is one of Al, Mn, Ti and Mg. 0.1 <= k <= 0. 1, 0 < x < 1, 0 < y < 1, 0 < z < 1; The surface modification layer is formed of two surface modification substances, one is yttria stabilized zirconia, the other is oxide, selected from Al2O3, SiO2, MgO and ZrO2. The invention also provides a preparation methodof the surface-modified ternary cathode material and a battery made of the surface-modified ternary cathode material. The YSZ provided by the invention is an oxide containing oxygen vacancies, which is favorable for lithium ion migration. The surface of the high nickel ternary cathode material modified by the YSZ has a faster lithium ion migration rate, and the lithium ion diffusion problem can bewell improved by covering the surface of the high nickel ternary cathode material, and the magnification performance of the material can be improved.

Negative-working imageable elements are prepared with radiation-sensitive imageable layers that contain surface-modified silica particles such as fumed silica particles and sol-gel silica particles, that are present in an amount of from about 1 to about 40 weight %, have an average particle size of from about 1 to about 500 nm, have surface hydroxy groups, and have a carbon content of from about 0.5 to about 15 weight % that is derived from surface hydrophobic groups having 1 to 30 carbon atoms. The presence of the surface-modified silica particles provides improved abrasion resistance, reduced tackiness, and various other desired properties.

The invention discloses preparation of an aramid fiber modifying solution and relates to a surface modifying method of aramid fibers. The aramid fiber modifying solution comprises a pretreatment solution and a re-treatment solution, wherein the pretreatment solution is prepared from 180-200 parts of toluene, 16-18 parts of polymethylene polyphenyl polyisocyanate and 3-6 parts of epoxy resin; the re-treatment solution is prepared from 180-220 parts of deionized water, 8-12 parts of A-stage resorcinol-formaldehyde resin, 8-16 parts of 25%-30% ammonium hydroxide, 160-200 parts of butadiene-vinylpyridine latex, 5-10 parts of 36%-40% of a formaldehyde solution, 0-5 parts of tannic acid and 0-5 parts of tea polyphenol. By treating the aramid fibers with the solution, surface roughness of the aramid fibers can be improved effectively, quantity of active groups on the surface of the aramid fibers is increased, and adhesiveness of the aramid fibers with different kinds of rubber is improved.

The invention discloses a metal reflector which comprises a closed substrate, a mirror surface arranged on the surface of one end of the substrate, an internal interlayer lightweight structure and a back plate arranged on the surface of the other end of the base body. The mirror surface comprises a surface modification layer, a reflecting layer and a protective layer, and the protective layer is the outermost layer; the interlayer lightweight structure comprises a plurality of cavities and through holes connected through the cavities. An additive manufacturing and processing technology is adopted, so that the interlayer light-weight structure in the metal reflector is more flexible, the metal reflector not only meets the high-rigidity design of the reflector, but also is light in weight due to the interlayer light-weight structure; the integrated design is adopted; the design of the surface modification layer enables the precision to be defined as that the RMS value of the deviation value between the precision and an ideal surface is superior to 1/10 lambda, wherein lambda is equal to 632.8 nm; the design of the transition layer enhances the chemical and mechanical durability of the metal reflector, and improves the bonding strength between the metal reflector substrate and the surface modification layer.

The invention belongs to the technical field of polymer material and the field of biomedical engineering, in particular relates to a preparation method for a biodegradable radioactive particle used for curing cancer. The method comprises the following detailed steps: the basic material of the radioactive particle with the needed shape is prepared by using a macromolecular biodegradable material with excellent biocompatibility according to demands; the obtained basic material of the radioactive particle is put into a 0.1 to 0.4mol/l surface modified liquid for dipping and generating aminolysis and carrying out grafting reaction; purified water is used for washing the grafted basic material for removing dissociative functional groups; the obtained basic material is put into a coupling agent liquid to dip for 1 to 2 hours and then is coupled; the obtained basic material is put into the liquid to dip for 12 to 24 hours and then washed to remove the dissociative functional groups; a radioactive isotope is used for replacing the iodine element in the basic material obtained by step (4); and a decoration film is collocated into a liquid and is coated on the surface of the basic material, thus obtaining the needed product. The degradation product is innoxious and harmless, and can be discharged outside the body by metabolism. The preparation method is simple and low in cost.

The invention discloses a novel FeCrMnVSix high-entropy alloy coating and a preparation method thereof, and belongs to the technical field of preparation of high-entropy alloy coatings through surface modification and laser cladding. The high-entropy alloy coating with excellent quality is prepared by selecting a laser cladding technology, the phase structure of the coating is a single body-centered cubic (BCC) solid solution structure, and the high-entropy alloy coating has the characteristics of high hardness and good high-temperature oxidation resistance. The preparation process is simple, operation is easy, repeatability is high, the powder cost is low, the high-entropy alloy is easy to form, and the application direction of the high-entropy alloy coating prepared through the laser cladding technology in the field of surface modification is widened.

The present invention discloses protein fragment including a cell binding region of fibronectin and methods of using the same for cell culture. Additionally, surfaces modified with such protein fragment and compositions including the same are provided. Desirably, such surfaces allow various cells to adhere thereto yet avoid issues associated with animal-derived products.