68results about How to "Good interface wettability" patented technology

The invention discloses a plating assistant agent additive for preventing plating leakage of steel wire hot galvanizing which comprises the following components in percentage by weight: 20-25% of fatty alcohol-polyoxyethylene ether, 20-26% of dodecyl phenyl polyoxyethyleneether, 8-14% of polyoxyethylene octylphenol ether, 3-6% of triethanolamine, 0.8-1.5% of carbamide and 30-36% of methyl alcohol. The method comprises the following steps: weighing the raw materials according to the proportioning of the additive, mixing and stirring the raw materials evenly to form the additive of the invention, adding the stock solution of the plating assistant agent additive of the invention into a slot according to a proportion that the amount of the added stock solution of the plating assistant agent additive accounts for 0.1-0.2% of the plating assistant agent bath solution, stirring evenly, and being able to use at the temperature of 70-75 DEG C. By adding the additive of the invention into the plating assistant agent, the wettability and the infiltrative of the plating assistant agent can be effectively enhanced, the plating effect on the surface of the steel wire is improved, and the plating leakage of the steel wire zinc plating is avoided.

A polyurethane elastic fiber with thermal insulation performance and a preparation method thereof. A ceramic powder of nanometer level as an insulation additive is mixed with polyurethane fiber, wherein the dosage of ceramic powder is 0.1-10% of the weight of polyurethane fiber. The barrier and reflection effects of ceramic powder on heat radiation are utilized to reduce heat loss; a low temperature plasma irradiation technology is used for modification treatment on the powder surface, so that the ceramic powder shows good dispersion effect and interface combination effect in polyurethane. The polyurethane prepared by the method has excellent thermal insulation performance, is especially suitable for weaving fabrics for winter underwear, and elastic fabrics such as knee pads, wrister and waistband, etc.

The preparation method of the carbon nanotube-alumina hybrid reinforced magnesium-aluminum alloy composite material of the present invention relates to the manufacture of an alloy containing non-metallic fibers or whiskers by impregnating molten metal with fibers or whiskers and particles, and is a method of producing alloys containing non-metallic fibers or whiskers by floating catalysis In-situ growth of carbon nanotubes on spherical nano-alumina and aluminum particles to prepare in-situ composite carbon nanotube-alumina and in-situ composite carbon nanotube-aluminum hybrid reinforcement phase, and carbon nanotube-oxidation was prepared by pressure infiltration process The method of aluminum hybrid reinforced magnesium-aluminum alloy composite material overcomes the poor synthesis effect of carbon nanotubes in the prior art, poor dispersion effect in the magnesium matrix, prone to structural damage, poor wettability of the reinforcing phase-matrix interface, and easy formation of a weak interface The scale or structure of the combination and composite reinforcement phase makes it unsuitable as a reinforcement phase of magnesium-based composites, resulting in the failure of the excellent reinforcement effect of carbon nanotubes to be fully utilized, and the defects of low comprehensive mechanical properties of magnesium-based composites.

The invention belongs to the technical field of particle-reinforced aluminum-based in-situ composite materials and discloses an aluminum-based in-situ composite material formed based on laser 3D printing and a preparation method of the aluminum-based in-situ composite material. The preparation method includes the steps that a mixture of Al-Si-Mg alloy powder and Al2O3 powder is prepared; the mixture is ball-milled through an intermittent ball-milling process; a three-dimensional CAD model established through a workpiece is subjected to layered slicing treatment; laser beams are adopted for scanning the laid powder line by line to form a two-dimensional section of the workpiece; and the steps are repeated till the workpiece is machined, and the aluminum-based in-situ composite material with an Al2Si4O10 reinforced element scattered on an Al matrix is formed. The operation method is easy and convenient to carry out, Al-Si-Mg alloy and Al2O3 generate the Al2Si4O10 reinforced phase in situ under the effect of high-energy lasers in the laser forming process, the interface wettability is improved, and then the interface strength of the composite material is enhanced.

The invention discloses a method for manufacturing a high-performance in-situ TiC reinforced titanium-based composite workpiece on the basis of CNTs and a laser additive manufacturing and processing technology. The method includes the following steps that (1) the carbon nano tubes are subjected to preliminary ultrasonic dispersion treatment; (2) pure titanium powder with the average particle size of 45-75 microns is mixed with the carbon nano tubes to obtain a mixture, and CNTs / Ti mixed powder is obtained by ball-milling the mixture through a ball mill under the protection of argon; and (3) the ball-milled CNTs / Ti mixed powder is shaped through a laser additive manufacturing and processing method so as to obtain a high-performance in-situ TiC reinforced titanium-based composite body. The method has the advantages that in-situ TiC reinforcement phases are formed on the basis of a CNTs in-situ reaction and evenly distributed in a titanium substrate, and the interface bonding strength is high; grains of a composite are refined remarkably; net forming or near-net forming of a test piece can be achieved; any complex heterogeneous part can be formed.