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68results about How to "Good heat and corrosion resistance" patented technology

High-reflectance film and manufacturing method thereof

The invention discloses a high-reflectance film which comprises a base layer, a high-reflectance layer and a protection layer, wherein the base layer, the high-reflectance layer and the protection layer are sequentially arranged on a substrate. The base layer is tightly attached to the substrate. The high-reflectance layer comprises a silver-copper alloy layer. The protection layer comprises an Al2O3 layer, a SiO2 layer and a Ti3O5 layer, wherein the Al2O3 layer, the SiO2 layer and the Ti3O5 layer are arranged in sequence, and the Al2O3 layer is tightly attached to the high-reflectance layer. The high-reflectance film is high in reflectance and resistant to high temperature and corrosion. The invention further discloses a manufacturing method of the high-reflectance film. The manufacturing method comprises the steps that the substrate is placed in a vacuum chamber of a film plating machine, the substrate is plated with the base layer, the high-reflectance layer and the protection layer in sequence, and then the high-reflectance film is obtained. The manufacturing method is simple and beneficial to formation of the high-reflectance film with good adhesion and compactness, so that the high-reflectance film has excellent reflecting performance and high resistance to high temperature and corrosion.
Owner:HANGZHOU KOTI OPTICAL TECH

Rotary heat accumulating type heat exchanger

The invention discloses a rotary heat accumulating type heat exchanger, which comprises a heat accumulating body (10), a rotating shaft (4) and disk rotary valves, wherein the rotating shaft movably penetrates through the heat accumulating body, two ends of the heat accumulating body are respectively provided with a cold air box (2) and a hot air box (21), the cold air box is provided with a cold air waste chamber (17) and a combustion air chamber (18), the hot air box is provided with a hot air waste chamber (19) and a high-temperature air chamber (20), the cold air box and the hot air box are internally provided with the disk rotary valves, each disk rotary valve comprises a radial current divider (8) provided with inner current division holes (16) and outer current division holes (15) at intervals, and a circumferential current divider (13); and a valve seat is fixedly arranged on the rotating shaft between the radial current divider and the circumferential current divider. According to the invention, the heat efficiency can be improved to above 90 percent, fuel consumption can be reduced, operation cost of an industrial furnace is reduced, and the quality of combustion air is improved. The rotary heat accumulating type heat exchanger has the advantages of compact structure, stable and reliable use, convenience for installation and maintenance, and long service life.
Owner:林杰 +1

Porous rare-earth zirconate powder for plasma physical vapor deposition thermal barrier coating and preparation method thereof

ActiveCN108675824AHas high temperature phase stabilityLow thermal conductivityCeramicwareOxide ceramicGas phase
The invention discloses porous rare-earth zirconate powder for a plasma physical vapor deposition thermal barrier coating and a preparation method thereof and belongs to the technical field of preparation of oxide ceramic materials and thermal barrier coating protection. The preparation method disclosed by the invention comprises the following steps: firstly, mixing rare-earth oxide and zirconiumoxide powder according to a ratio; carrying out ball milling on a mixture and a solvent medium A, so as to obtain first suspension liquid; then drying and sintering to obtain a phase; then adding a solvent medium B and carrying out second-time ball milling to obtain second suspension liquid; then mixing the suspension liquid with a binding agent and granulating to obtain micron agglomerated spherical powder; finally, after sieving and grading, carrying out low-temperature heat treatment to obtain the porous rare-earth zirconate powder. The powder provided by the invention has high-temperaturephase stability, good thermal corrosion resisting performance, high purity, high sphericity, good flowability and low crushing strength, and high deposition efficiency; a preparation technology is convenient and equipment is simple; enlarged production is easy to realize and the cost is relatively low.
Owner:BEIHANG UNIV

Waterborne epoxy/unsaturated polyester interpenetrating network polymer alloy and preparation method thereof

The invention relates to a waterborne epoxy/unsaturated polyester interpenetrating network polymer alloy and a preparation method of the alloy; the waterborne epoxy/unsaturated polyester interpenetrating network polymer alloy is composed of a waterborne epoxy/unsaturated polyester component A, a waterborne unsaturated polyester component B and a curing agent component C; a mixing ratio measured by mass of the waterborne epoxy/unsaturated polyester component A and the waterborne unsaturated polyester component B is 2: 1-1: 2; dosage of the curing agent component C is 0.025-0.1% of total mass of the waterborne epoxy/unsaturated polyester component A and the waterborne unsaturated polyester component B; an obtained emulsion C is mixed with the obtained emulsion D, and the curing agent component C of cyclohexanone peroxide and cobalt naphthenate is added into a mixture of the obtained emulsion C and the obtained emulsion D, the mixture is poured into a mould after the mixture is stirred uniformly, is baked at 80-100 degrees centigrade, and is cured to obtain a product that is waterborne epoxy/unsaturated polyester interpenetrating network polymer alloy; the method can effectively play a modification role of epoxy resins, and uses water as disperse phase, so that the method is secure and environment friendly; impact strength and tensile strength of condensates are excellent; heat resistance and corrosion resistance are excellent.
Owner:佘植能 +1

Heat-resistant corrosion-resistant wear-resistant composite coating, preparation method and application

The invention discloses a heat-resistant corrosion-resistant wear-resistant composite coating, a preparation method and an application. The composite coating comprises a working layer and a protectionlayer, wherein the working layer is a Cr3C2-NiCr coating body, the Cr3C2-NiCr coating body comprises Cr3C2 and NiCr with the mass ratio of 3:1, the protection layer is an Al2O3-SiO2-MTMS-Ce(NO3)3 ceramic/high-molecular composite material, and the Al2O3-SiO2-MTMS-Ce(NO3)3 ceramic/high-molecular composite material comprises Al2O3-SiO2 sol, MTMS (methyltrimethoxysilane) and Ce(NO3)3 with the mass ratio of 100:50-70:0.5-2. The preparation method comprises the following steps that Cr3C2-NiCr powder is sprayed on a base material so as to prepare the working layer; the Cr3C2-NiCr working layer is ground and cleaned; the Al2O3-SiO2-MTMS-Ce(NO3)3 protection layer sol is prepared; and the protection layer sol is coated on the surface of the Cr3C2-NiCr working layer, and is put into a muffle furnaceafter aging, heat preservation is carried out for 30 minutes at the temperature of 60 DEG C, then heat preservation is carried out for 30 minutes at the temperature of 120 DEG C, and cooling is carried out to room temperature along with the furnace to obtain the composite coating. The composite coating has good bonding force between the composite coating and a base body, the coating has fewer dense pores, and is resistant to heat corrosion and good in wear resistance, and the coating is excellent in overall performance and long in service life.
Owner:ANHUI UNIVERSITY OF TECHNOLOGY +1
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