41results about How to "Reduced heat transfer capability" patented technology

The invention discloses a water-based environmentally friendly flame-retardant and heat-insulating coating and a preparation method thereof. The formula of the water-based environmentally-friendly flame-retardant and heat-insulating coating includes, in mass percentage: 20-40% of water-based acrylic emulsion, water-based epoxy resin emulsion 10-20%, water-based inorganic flame retardant dispersion slurry 20%-30%, water-based thermal insulation nano-dispersion slurry 5%-10%, water-based wetting and dispersing agent 0.1%-0.3%, water-based defoamer 0.1 %-1%, silane coupling agent 1%-3%, lead-free pigment 5%-10%, film-forming aid 0.5%-2.5% and deionized water 5%-25%. The water-based, environment-friendly, flame-retardant, heat-insulating and heat-insulating paint of the invention can form effective protection against corrosion, abrasion resistance, acid and alkali resistance, impact resistance, flame retardancy and fire prevention on the surface of the coated substrate. Under high-temperature combustion conditions, it does not produce harmful gases such as corrosive halogen gas, does not volatilize, has a long-lasting effect, is non-toxic, smoke-free, and does not drip.

The invention discloses a vanadate vanadate nanorod composite paint, belonging to technical field of functional materials. The vanadate vanadate nanorod composite paint is prepared from the following components in percentage by mass: 20-40% of zinc vanadate nanorod, 15-25% of styrene-acrylic emulsion, 30-45% of water, 5-20% of nano aluminum oxide, 0.05-0.2% of alcohol ester-12, 0.5-2% of polyurethane, 0.5-2% of 10% sodium hexametaphosphate water solution, 0.5-2% of tributyl phosphate and 0.5-2% of ethylene triol. By adopting the zinc vanadate nanorods, the invention has the characteristics of high activity, high stability, no toxicity, low cost and the like, and can implement mass preparation of the vanadate nanorod composite paint. The vanadate vanadate nanorod composite paint disclosed by the invention has stable self-cleaning and anti-fouling properties.

The invention is applicable to the technical field of concrete, and provides an active powder concrete and a preparation method thereof. The active powder concrete includes the following components: cement, fly ash, modified glass fiber, antimony tin oxide, water reducing agent, and water; The surface of the modified glass fiber is electrostatically adsorbed with nanometer inorganic materials. In the embodiments of the present invention, by adding modified glass fiber and antimony tin oxide, synergistic effects can be achieved, thereby significantly improving the strength and heat insulation performance of the active powder concrete. Among them, antimony tin oxide can reduce light transmission and heat transfer effects, and can significantly improve the thermal insulation performance of reactive powder concrete under the compounding effect of modified glass fibers. In addition, in the embodiment of the present invention, the nano-inorganic material is adsorbed on the surface of the glass fiber by electrostatic adsorption, which can improve the dispersion of the glass fiber in the concrete system, and can significantly improve the strength and other properties of the active powder concrete.

The invention discloses a pre-cooling device of a plastic tubular product manufacture line, which includes a shell with a sandwich; the inlet end of a material circulating channel in the inner cavity of the shell is communicated with the material outlet of a handpiece finish mold; the outlet end is communicated with the inlet of a sizing sleeve; the two ends of the sandwich of the shell are closed; the sandwich of the shell and the two end surfaces of the sandwich form the refrigerating channel of the pre-cooling device; a refrigerant inlet on the refrigerating channel is arranged on the refrigerating channel near the end of the handpiece finish mold; the outlet is arranged on the refrigerating channel near the end of the sizing sleeve. The pre-cooling device of the invention has the advantages that a high temperature material blank extruded from the handpiece finish mold is cooled by the pre-cooling device of the plastic tubular product manufacture line; therefore, the temperature ofthe extruded material blank is reduced and the material blank is contracted; the outer diameter of the material blank is almost consistent with the inner diameter of the sizing sleeve, thus being easier to enter the sizing sleeve, reducing the heat transferring action between the material blank and the sizing sleeve and avoiding the problems of over-heating of the sizing sleeve and blocking of the material blank from happening; thereby effectively improving the manufacture speed of the plastic tubular product manufacture line and stabilizing the manufacture.