179results about How to "Improve bonding ability" patented technology

The invention provides a preparation method of a hydrophilic and antistatic polyester fiber. The preparation method comprises the steps that a carbonic acid solution is adopted as a solvent of chitosan gel, and chitosan is applied to the surface of a polyester fiber; a stable graphene oxide-chitosan coating is formed on the surface of the polyester fiber through interaction between graphene oxide and the chitosan; after washing and drying are conducted, the hydrophilic and antistatic polyester fiber is obtained. According to the preparation method, carbonic acid is adopted as the solvent of the chitosan, a chitosan film can be directly formed to be deposited on the surface of the polyester fiber through heating, and a solvent removing step is not needed; the polyester fiber with the chitosan film and the graphene oxide have a high bonding effect; the prepared chitosan-graphene oxide-polyester fiber has the very good hydrophily and antistatic property. The green chemical preparation method is simple in preparation process, environmentally friendly and low in equipment requirement and has a wide application prospect.

The invention relates to elastic material for preparing elastic and flexible toys, and particularly relates to elastic flexible glue. The elastic flexible glue comprises the following components by weight percentage: simethicone, super fine calcium carbonate, boric acid, TPR (thermal plastic rubber), zinc stearate, silicon resin, bentonite, barium carbonate, linseed oil and erucyl amide. The elastic flexible glue provided by the invention has good elasticity and proper bulking intensity; the surface of the elastic flexible glue is smooth, good in hand feel, adhesive, and tough, and has good aging resistance, high stability and long service life that is from 13 to 15 months; and the elastic and flexible toys made of the elastic flexible glue have high quality, and are playable and durable.

The invention relates to the field of waterproof engineering construction methods, in particular to a non-cured rubber asphalt paint and self-adhesion coiled material composite construction method. The non-cured rubber asphalt paint and self-adhesion coiled material composite construction method comprises the following steps of S1, waterproof paint treatment; S2, base layer treatment; S3, joint reinforcing treatment; S4, self-adhesion coiled material pre-trial paving; S5, first bonding layer construction; S6, self-adhesion coiled material paving and lap joint; and S7, close-up seal. The methodhas the beneficial effects that a composite waterproof layer made through the construction method has the good anti-aging property, and even if the composite waterproof layer is used for a long time,the composite waterproof layer can still keep good structural strength and bonding property.

The invention discloses a nuclear-grade ion-exchange resin-based composite material and a preparation method thereof. The composite material is prepared by the steps: firstly reducing a platinum precursor into polymer-packaged nano platinum particles by using a reducing agent in existence of a polymer packaging agent; adding a silicon source and an aluminum source and then carrying out hydrothermal reaction employing a polymer as a structure-directing agent to obtain a platinum-silicon aluminum molecular sieve core-shell structure compound, wherein the inner core is nano platinum particles and the shell layer is a silicon-aluminum molecular sieve; and finally assembling the platinum-silicon aluminum molecular sieve core-shell structure compound to nuclear-grade ion-exchange resin to obtain the nuclear-grade ion-exchange resin-based composite material. The composite material has relatively high ion exchange property, relatively high catalytic removal efficiency, relatively high environment durability and extremely high recycling property, and has a good application prospect in the field of nuclear industry circulating water treatment.

The invention belongs to the field of resin preparation technologies, and particularly relates to a preparation method for resin with the free-spraying special texture effect. According to the preparation method, an ATRP initiator is bonded on the surface of a metal pigment, monomers are precisely polymerized on the surface of the pigment one by one through controllable polymerization to form a uniform macromolecular coating, and therefore the problem that multiple flaky particles of a special-effect pigment are bonded in a crosslinking mode through traditional free radical polymerization and disorder polymerization is fundamentally solved. In addition, due to the fact that in the ATRP controllable polymerization process, the initiator is always located at the front end of a macromolecular chain and the activity of the initiator is continuously kept, the macromolecular coating can be regulated through design and selection of the monomers to enable the macromolecular coating to have the good compatibility with a resin substrate, and the dispersibility of the special-effect pigment in the resin substrate is effectively improved. The special-effect pigment coated in this way can be matched with multiple kinds of engineering plastic resin such as ABS, PC, PBT, PMMA and nylon to prepare the corresponding high-quality resin with the free-spraying special texture effect.

The invention discloses a novel metal diffusion bonding technology. Main steps comprises steps that: two parts on which a bonding metal layer is deposited are packaged in a vacuum sealing soft bag, the vacuum sealing soft bag is then put in a container filled with liquid, the container is connected with a pressure device, pressure generated by the pressure device is exerted on a part needing bonding through the liquid in the container and the vacuum sealing soft bag, temperature rising is further realized simultaneously, so metal diffusion bonding is realized under effects of the temperature and the pressure. The novel metal diffusion bonding technology can guarantee uniform bonding pressure in each direction and does not easily cause rupture damage to a crimping material even under high pressure intensity, so a bonding effect is improved. The exerted pressure is great, so reliable bonding can further be realized even under lower temperature, lowest work temperature can be 80 DEG C, moreover, the novel metal diffusion bonding technology can reduce requirements for technology clamps and physical dimensions of bonding materials.

The invention discloses a moisturizing and repairing composition for stimulating cellular water channel protein production. The active ingredients of the moisturizing and repairing composition are composed of hydrolyzed viola tricolor extract, sodium hyaluronate, bio-saccharide gum-1, ceramide 3 and tripeptide-1 copper. The invention further provides application of the moisturizing and repairing composition in preparation of cosmetics with moisturizing and repairing effects and cosmetics comprising the moisturizing and repairing composition. According to synergistic effects of the various active ingredients, the moisturizing and repairing composition effectively stimulates cellular water channel protein production and achieves excellent effects of moisturizing and repairing skin barrier.

The invention discloses a fluoroalkyl modified acrylate-containing low-surface energy, drag reduction and fouling prevention coating. The coating comprises a component A and a component B, wherein the component A comprises, by mass, 20-50% of fluoroalkyl modified acrylic resin, 2-15% of rosin, 15-25% of a composite antifouling agent, 5-15% of a pigment and filler, 1-5% of an assistant and 10-20% of an organic solvent; the component B is an N75 curing agent produced in the Bayer Company in Germany, and a mass ratio of the component A to the component B is 5:1-10:1; the structural formula of the fluoroalkyl modified acrylic resin is shown in the description; and in the structural formula, R1 is H or CH3, R2 represents a C1-4 alkyl group, and x, m, n and p are integers in a range of 1-9 respectively. The invention also discloses a preparation method of the coating. A film formed by using the coating has good bonding ability with a substrate, keeps lasting brightness, and also has the characteristics of excellent static/dynamic fouling prevention, low surface energy and drag reduction.

The invention belongs to the technical field of anticorrosive coatings, and discloses a permeation consolidation type solvent-free epoxy anticorrosive coating, and a preparation method and an application thereof. The anticorrosive coating consists of a component A and a component B. The component A consists of the following components in parts by weight: 18-89 parts of epoxy resin, 5-50 parts of enhanced type reactive solvents, 5-60 parts of permeation type reactive solvents, 0-5 parts of interfacial modifiers and 0-3 parts of permeation enhancers. The component B consists of the following components in parts by weight: 5-95 parts of functional curing agents, 0-30 parts of curing regulators, 0-50 parts of double-function regulators, 0-40 parts of curing accelerators and 0-5 parts of condensation catalysts. The coating is low in viscosity and excellent in permeability, and has an excellent mechanical property after being cured. In addition, the permeation consolidation type solvent-free epoxy anticorrosive coating disclosed by the present invention has good wettability and viscocity with concrete, and strength of the concrete can be improved, water on the surface of the concrete can be removed, and surface corrosion factors of the concrete are reduced.

The invention relates to the technical field of solar back plates, and in particular relates to a coating liquid for a fluorocarbon coating layer and a solar back plate using the coating layer. In order to improve encapsulation strength of a fluorocarbon coating layer of a current solar back plate, the invention provides the coating liquid for the fluorocarbon coating layer and the solar back plate using the coating layer. The coating liquid for the fluorocarbon coating layer comprises the following components, in percentages by weight: 40%-70% of fluorocarbon resin, 20%-40% of titanium dioxide, 1%-5% of extinction powder, 0.2%-0.8% of polyacrylate, 1%-5% of adhesion promoting resin, and 3%-10% of isocyanate, wherein the solid content is controlled at 40%-60%. The coating liquid provided by the invention forms the highly-dense fluorocarbon coating layer on the surface of a PET substrate, and the fluorocarbon coating layer can exhibit excellent encapsulation strength during lamination with EVA and remains to keep the high encapsulation strength after undergoing a damp heat aging test.

The invention discloses a self-repairing polymer. The self-repairing polymer is characterized by comprising a polymerizable resin carrier and a capsule containing a vinyl monomer, wherein the polymerizable resin carrier is prepared from a monomer, an initiator and a catalyst; the weight percents of the monomer, the initiator, the catalyst and the capsule containing the vinyl monomer are respectively 79-90%, 0.9-1.2%, 3-7% and 5-20%. The self-repairing polymer has the positive effects that the self-repairing polymer has high repairing efficiency; chemical reaction happens between the carrier and repairing agents of a repairing system disclosed by the invention, thus improving the bonding capacity of a modified material; the self-repairing polymer completes self-repairing at room temperature; heating is not needed in the self-repairing process, and crack repairing is carried out at room temperature; the self-repairing polymer is environment-friendly and is low in cost; the repairing agents are distributed uniformly.

The invention discloses a preparation method and application of red fluorescent copper nano-clusters. The preparation method comprises the following steps: preparing a red fluorescent copper nano-cluster aqueous solution by taking 2-mercapto-5-benzimidazole sulfonic acid dihydrate sodium salt as a protective agent and a reducing agent and taking a copper nitrate solution as a substrate through anultrasonic method; in the synthesis process, the addition of common reducing agents such as hydrazine hydrate and ascorbic acid is avoided, the operation is simplified, and the method is green and environment-friendly. The fluorescence quantum yield of the prepared red fluorescence copper nano-clusters is 0.31%, and the red fluorescent copper nano-clusters have the advantages of large Stocks displacement, good water solubility, strong photobleaching resistance and the like, has high-sensitivity and high-selectivity response to glutathione, and can be applied to detection of fluorescence enhanced glutathione.

The invention discloses a transfer method based on a wafer level GaN device original substrate, and belongs to the technical field of semiconductor technology. The surface of an original film is covered with a removable thicker protection supporting layer, and after the original substrate is removed, two wafers are bonded directly. The method comprises the following steps: (1) enabling the surfaceof a wafer level GaN device after front face technology to be covered with the protection supporting layer; (2) removing the original substrate; (3) cleaning the back face of a wafer and the surfaceof an Si substrate to be transferred; (4) carrying out N2 gas plasma processing on the back face of the wafer; (5) carrying out O2 gas plasma processing on the surface of the Si wafer; (6) putting thetwo parts into an ammonia water solution for prebonding; (7) applying external force to a laminated sample in an N2 environment for bonding; (8) carrying out low temperature annealing processing on the bonded wafer; (9) exposing the annealed wafer, and then putting the exposed wafer into a developing solution to resolve and remove a surface protective layer. According to the method, the substratetransfer of the GaN device can be realized.

The invention discloses a synthesis process of viscosified phenyl silicone oil for high-power light-emitting diode (LED) packaging. The synthesis process comprises the following steps of: synthesizing an epoxy end-capping reagent; dehydrating a methyl cyclosiloxane monomer, a methyl vinyl cyclosiloxane monomer and methyl phenyl cyclosiloxane monomer; adding the epoxy end-capping reagent and a catalyst and performing polymerization reaction; and after the reaction, removing the catalyst and performing vacuum devolatilization; and cooling and discharging. Compared with the traditional silicone oil for LED packaging, the viscosified phenyl silicone oil for high-power LED packaging synthesized by the synthesis process has high refractive index and light transmittance, excellent viscosity and excellent room temperature curing property, and can effectively improve the light output and the high temperature resistance of silica gel for LED packaging.

The invention provides a wafer cutting method. The method comprises the following steps of: firstly, downwards grooving along the surface of a device wafer by adopting a first laser cutting process to form a first groove with larger transverse width, then etching the surface of the device wafer, removing particulate matters which are generated and attached to the surface of the device wafer when the first groove is formed, then flattening the surface of the device wafer, ensuring the cleanliness and flatness of the surface of the device wafer, then adopting a second laser cutting process for grooving downwards along the bottom face of the first groove, and forming a second groove which is communicated with the first groove and is small in transverse width, wherein at the moment, the particles generated by the second laser cutting process are only accumulated in the first groove and the second groove, the cleanliness and flatness of the surface of the device wafer are not affected, the cleanliness and flatness of the surface of a single chip generated after cutting are guaranteed, and the bonding effect of a hybrid bonding process can be improved.

The invention provides a preparation method and application of a magnetic nanometer catalyst loading nanogold. The preparation method comprises the steps of firstly fully dispersing magnetic nanometerparticles into ethyl alcohol, adding ammonium hydroxide and tetraethyl orthosilicate, stirring, and separating to obtain silicon-coated magnetic nanoparticles; then fully dispersing the silicon-coated magnetic nanoparticles into ethyl alcohol, adding a silane coupling agent with sulfydryl, stirring at room temperature, and separating to obtain sulfhydrylated magnetic nanoparticles; finally fullydispersing the sulfhydrylated magnetic nanoparticles into deionized water, adding a nanogold solution, stirring at the room temperature, and separating to obtain the magnetic nanometer catalyst loading the nanogold. During the preparation process, no complex organic reaction is involved, and the cheap silane coupling agent easy to get is used as a loading medium, so that the preparation method issimple and low-cost; the prepared magnetic nanometer catalyst has higher catalytic activity in p-nitrophenol reduction reaction, and can be recycled for multiple times.

The invention provides a preparation method of a super-molecular nano fiber for magnetic resonance imaging radiography. A construction unit takes diPMCD as a main body; manganese porphyrin is taken as a secondary body; and a super-molecular assembly body is constructed by mutual inclusion and complexation effects of the main body and the secondary body. The preparation method comprises the following steps of: dissolving 6-isothiocyano-6-deoxy-fully methylated beta-cyclodextrin and ethanediamine into acetonitrile under the protection of argon; agitating at a room temperature for one night; carrying out spinning evaporation to remove a solvent; purifying a residual solid by using column chromatography to obtain a white diPMCD solid; dissolving the diPMCD and the manganese porphyrin into water and mixing uniformly; and adding sodium ascorbate to obtain a target object. The preparation method has the advantage of being is simple and the components have relatively strong bonding capability; the super-molecular nano fiber can be effectively imaged in a body of a mouse and has a wide application prospect in the field of a magnetic resonance imaging contrast agent; and the invention provides a novel method for preparing the contrast agent.