33results about How to "Play a coupling role" patented technology

The present invention is self-linking water thinned road mark paint and its preparation and usage. The road mark paint is storage stable and has solid content of at least 75 %, and anionic self-linking silicone propylene emulsion as main material. Specifically, it consists of anionic self-linking silicone propylene emulsion 20-50 weight portions, distilled water 1-5 weight portions, methanol 1-5 weight portions, filming assistant 1-5 weight portions, dispersant 1-3 weight portions, moistener 0.1-1 weight portions, disinfecting mildew inhibitor 0.1-0.5 weight portions, defoaming agent 0.1-0.5 weight portions, and pigment and stuffing 20-80 weight portions. It may be painted to road directly or on primer, and may be used widely for different kinds of road.

The invention provides a crosslinking modification method and a composite material of vitric acidic lava micro powder. By the method, a novel vitric acidic lava / difunctional silane coupling agent composite material can be prepared from natural rocks and can be applied to reinforcing agents and reinforcing fillers of rubber and the like. With low price, the composite material can replace reinforcing agents and reinforcing fillers of white carbon black, and other rubber and plastics; in addition, the production process of the composite material has no environment pollution.

The invention provides a double-shell self-repairing microcapsule, and a preparation method and application thereof. The double-shell microcapsule comprises a core material, a first wall material layer wrapping the core material and a second wall material layer wrapping the first wall material. The double-shell microcapsule provided by the invention is provided with two wall material layers, and thus has high mechanical strength; the double-shell microcapsule is a single-component repairing system, and after a coating is damaged, the microcapsule is broken to release isocyanate core material which reacts with moisture in air for curing so as to intelligently repair damage; and meanwhile, in a high-humidity environment, the isocyanate core material in the microcapsule can absorb moisture slowly permeating into the coating, so the waterproof performance of a coating material is enhanced.

The invention relates to a special high-conductivity material for a conductive powder coating. The special high-conductivity material is prepared from the following raw materials in parts by weight: 10-50 parts of a conductive material, 0.3-5 parts of a cosolvent, 0.5-5 parts of a coupling agent and 2-10 parts of a wetting agent. By the adoption of a constant-temperature high-speed mixing technology, a preparation material is applied to the conductive powder coating, and polar groups such as hydroxide radical and anhydride are introduced, so that the conductive material is liable to be in contact with resin to form a space conductive network, and the conductivity is improved; moreover, the high-conductivity material can be reacted with the hydroxide radical on the surface of inorganic filler, so that reactive silanol is generated, and the interface property, the compatibility, the dispersion property and the flowability of the synthesized resin and the inorganic filler are effectively improved. The phenomenon of layering of the conductive material and a resin base material in a production process is avoided; furthermore, the prepared conductive powder coating is stable in conductivity; when the coating layer achieves the same conductivity, the technology compared with a common production technology has the advantages that the use amount of the conductive material is reduced by 10-40 percent, and the cost is reduced.

The invention relates to a preparation method of a porous raw material for aluminum nitride crystal growth, and belongs to the technical field of aluminum nitride crystal raw material preparation. Inorder to solve the problems that the existing aluminum nitride raw material is relatively compact and is not beneficial to raw material volatilization and crystal growth, the invention provides a preparation method of a porous raw material for aluminum nitride crystal growth. The method comprises the following steps: adding aluminum nitride powder subjected to hydrolysis-resistant pretreatment into a sodium alginate solution, carrying out stirring and ball milling to obtain mixed slurry; and pouring the obtained mixed slurry into a mold, uniformly spraying a calcium chloride solution onto thesurface of the slurry, freeze-drying the slurry, sintering in a protective gas atmosphere, pickling, washing with water, and drying to obtain the porous aluminum nitride raw material. The method is simple to operate and low in cost, the porous raw material with the porosity of 42-50% can be prepared, volatilization of aluminum nitride is facilitated, the utilization rate of the aluminum nitride raw material is high, and the method has positive influence on growth of aluminum nitride crystals.

The invention provides a radiation cured adhesive for indium tin oxide (ITO) circuit and module protection, which comprises the following components in percentage by mass: 30 to 70 percent of polysiloxane-acrylic ester, 10 to 50 percent of polyester acrylate, 0 to 40 percent of reactive diluent, 0.2 to 8 percent of photoinitiator, 0.1 to 5 percent of coupling agent, 0 to 2 percent of antiaging agent and 0 to 2 percent of defoamer, wherein the reactive diluents is an acrylate with a single(double or multiple) functional group; the photoinitiator is a cracking initiator, a hydrogen abstracting type initiator or a combination of the two; the coupling agent is a silane coupling agent; and the antiaging agent is one or several of a phenol antioxygen, an amine antioxygen, a sulfur compound antioxygen, a phosphorus compound antioxygen and an organic metal salt antioxygen. In the curing process of the adhesive, moisture is not required to participate in reaction, the adhesive can be cured quickly in the irradiation of ultraviolet, and then package can be accomplished; and thus, the production efficiency is improved greatly, energy is saved and raw material cost is reduced.

The invention discloses a water-based first coating for tire bead steel wire plating aftertreatment. The water-based first coating is prepared from at least one of N-beta (aminoethyl)-gamma-diethylaminopropyl-methyldimethoxysilane (triethoxyl silicon propyl) tetrasulfide, bi(triethoxyl silicon propyl) disulfide and 3-sulfo-octanoic acid-1-propyl triethoxyl silane, as methanol, ethanol and water. Hydrolysis groups at one end of the molecular chain of the silane coupling agent in the water-based first coating are subjected to hydrolysis and react with a steel wire substrate so as to be combined together, and organic groups at the other end of the molecular chain can react with organic components in an aftertreatment process, so that inorganic metal and organic resin are effectively connected; when the water-based first coating is applied to tire bead steel wire plating aftertreatment, the adhesive force of a tire bead steel wire and rubber can be effectively improved, the adhesive adhesion rate of the surface of the adhered steel wire is increased, and the preservation time of the steel wire is prolonged.

The invention belongs to the technical field of polymer composite material preparation, in particular to a preparation method for polyvinyl alcohol / graphene composite thin film. A new technology method is adopted to prepare the polyvinyl alcohol / graphene composite thin film, in-situ polymerization is conducted to prepare a polyvinyl alcohol / oxidized graphene solution, then a small amount of dopamine is added and reacts with the solution at the certain temperature and under an alkaline condition, after drying, the film is formed, and the polyvinyl alcohol / graphene composite thin film is prepared. Compared with a solution blending method, the composite thin film prepared by adopting the method has excellent mechanical and heat-resisting properties.

The invention provides a transparent steaming and boiling-resistant film. The transparent steaming and boiling-resistant film comprises a first polypropylene layer, a first adhesive resin layer and a polyamide layer which connect according to a successive order, wherein, the first adhesive resin layer is composed of adhesive resin and polypropylene, the polypropylene accounts for 20% to 30% of the first adhesive resin layer. The invention also provides a method for producing the transparent steaming and boiling-resistant film. Experiments show that the tensile force of the transparent steaming and boiling-resistant film with thickness of 75mum produced by the invention can reach 48(N / 15mm) / 52(N / 15mm), the thermal sealing strength before boiling is 35 (N / 15mm), the thermal sealing strength after boiling is 28 (N / 15mm), and the stripping phenomenon of the polypropylene layer and the polyamide layer can not occur before or after boiling, the transit quantity of water vapor is not higher than 2.75, the transit quantity of oxygen is not higher than 21.48, a PA / RCPP composite film with thickness of 85 mum prepared by using a dry type composite method has comparable performance.

The invention provides a preparation method of a conductive nylon material. The method includes the following steps: (1) preparing an ionic liquid from n-butyl bromide and N-vinylimidazole; (2) calcining carbon nanotubes, and processing the calcined carbon nanotubes with a mixed acid to obtain acid processed carbon nanotubes; (3) preprocessing the acid processed carbon nanotubes with titanium chloride to obtain preprocessed carbon nanotubes; (4) carrying out a grafting reaction on the preprocessed carbon nanotubes and the ionic liquid to prepare a conductive agent; (5) weighing nylon and other raw materials according to corresponding weight parts; and (6) mixing the raw materials, and carrying out extruding granulation to obtain the conductive nylon material. The conductive nylon material prepared in the invention has good conductivity.

The invention discloses a production process of tin bronze tempered bead steel wire highly bonded to rubber, comprising the following steps: ①, selecting the steel wire; ②, tempering treatment; ③, electrolytic pickling; ④, copper-tin alloy plating ; ⑤, washing and drying; ⑥, coating water base coating solution; ⑦, coating organic coating; ⑧, take-up. The silane coupling agent in the water base coating liquid used in this process, the hydrolyzed group at one end of the molecular chain is hydrolyzed and combined with the steel wire matrix, and the organic group at the other end can react with the organic components in the post-treatment process. Effectively connect inorganic metal and organic resin, improve the adhesion between bead wire and rubber, the adhesive rate on the surface of the steel wire after bonding, and prolong the storage time of the steel wire.

The invention discloses a melting processing method for a polyvinyl alcohol composite material. The method comprises the following steps of: uniformly mixing polyvinyl alcohol at the temperature of 70-100 DEG C to obtain a mixture; uniformly mixing 100 parts by mass of the mixture, 10-30 parts by mass of a small molecular composite plasticizing agent and 0.5-5 parts by mass of an aid at the temperature of 70-120 DEG C, and cooling to the room temperature; and adding into a double screw extruder for extruding and pelletizing. By reasonably selecting a composite system of the small molecular plasticizing agent and adding an appropriate amount of aid, thermoplastic processing and molding of polyvinyl alcohol are realized successfully. According to the method, the problem of melting processing of polyvinyl alcohol is solved, and the processing property, physical property, appearance and the like of the composite material are improved.

The invention provides a crosslinking modification method and a composite material of vitric acidic lava micro powder. By the method, a novel vitric acidic lava / difunctional silane coupling agent composite material can be prepared from natural rocks and can be applied to reinforcing agents and reinforcing fillers of rubber and the like. With low price, the composite material can replace reinforcing agents and reinforcing fillers of white carbon black, and other rubber and plastics; in addition, the production process of the composite material has no environment pollution.