61results about How to "Improve emissivity" patented technology

Actively controlled texturing systems for and methods of selectively and reversibly forming wrinkles, or modifying the amplitude, wavelength, or pattern of existing wrinkles upon a surface using active material actuation.

A method of thermographic inspection includes absorbing, at an applique applied to a test area of an article, light from a testing light source. The method further includes emitting, by the applique, thermal radiation directed to a capture device, the thermal radiation corresponding to at least a portion of the light absorbed by the applique.

The embodiments of the invention provide a fiberizable glass composition prepared from an ingredient composition. The ingredient composition comprises, but not limited to inorganic crystalline minerals, inorganic vitreous minerals, inorganic chemicals and the like.

The invention discloses a heat-storing blackbody cement and a preparation method thereof, which are characterized in that: 75.0-85.0% Portland cement clinker, 2.4-4.0% dihydrate gypsum, 2.0-10.0% black colorant, and 5.0-15.0% cordierite powder composition and mass percentage ratio to take each raw material; adopt dry ball milling process, put the raw material into the ball mill, the rotating speed of the ball mill drum is 43-47r / min, and the residence time of the raw material in the ball mill is 29 ~31 minutes, after the raw materials are mixed by ball milling, the heat-storing black body cement can be obtained. The prepared blackbody cement has high color blackness, high blackbody radiation coefficient and large heat storage coefficient, and can be used as a material for large-scale heat storage engineering after being poured into a large-volume block solid; the blackbody cement prepared by the present invention is a kind of heat storage Cement material with good performance, heat radiation and heat diffusion.

The invention relates to a secondary-electron emission thin film containing metal and zinc oxide doped magnesium oxide, and a preparation method thereof. The secondary-electron emission thin film containing the metal and zinc oxide doped magnesium oxide comprises a substrate and a zinc oxide doped magnesium oxide film layer and a metal doped magnesium oxide film layer sequentially arranged on thesubstrate from top to bottom. In the metal doped magnesium oxide film layer, a metal material is singly doped or the metal material and zinc oxide are co-doped, the percentage content of the atomic number of the metal in the metal doped magnesium oxide film layer prepared from the singly doped metal material is 6 percent to 30 percent, the percentage content of the atomic number of the metal in the metal doped magnesium oxide film layer prepared from the co-doped metal material and zinc oxide is 5 percent to 25 percent, and the percentage content of the atomic number of zinc is not higher than5 percent; the size of an Mg-Zn-O composite grain formed in the zinc oxide doped magnesium oxide film layer is 8nm to 30nm, and the percentage content of the atomic number of the zinc is 0.2 percentto 8 percent. The secondary-electron emission thin film containing the metal and the zinc oxide doped magnesium oxide is prepared by adopting a sputtering method, the secondary-electron emission coefficient can be effectively improved, and the stability of electron emission is improved.