49results about How to "High near-infrared reflectivity" patented technology

The invention provides a gray solar reflective cooling coating and a preparation method of the gray solar reflective cooling coating. The coating adopts a water-based acrylic emulsion as film-forming base stock, so that the coating is good in ageing resistance, long in outside service life, nontoxic and environmentally-friendly, and has good stain resistance, alkali resistance and water resistance, and good adhesive force to base materials such as concrete, metal, wood and glass. The gray solar reflective cooling coating is prepared from complementary color pigment pairs with a strong near infrared reflection or transmission function, such as black and white, blue and orange, purple and yellow, red and blue and the like, and titanium dioxide as functional pigments, assisted by a plurality of body pigments and assistants; therefore, the gray solar reflective cooling coating is simple to prepare, low in cost and friendly to the environment. The gray solar reflective cooling coating has excellent near infrared reflection and heat insulation performances, has good cooling performance, and can be widely applied to decoration and energy conservation of roofs and outer walls of buildings, and the optical performance meets the latest national standard requirements.

The invention relates to a colored solar heat reflective cooling coating and a preparation method thereof. By using a waterborne acrylic emulsion as a film forming base material, the coating is good in anti-aging performance, long in outdoor service life, non-toxic and environmental friendly, has excellent resistance to stains, alkali resistance and water resistance and has a good adhesive force to base materials such as concrete, metals, woods and glass. By adding color functional auxiliaries with strong near infrared reflection or transmissivity supplemented by various extender pigments and auxiliaries, the coating is simple to prepare, low in cost and environmentally friendly. Compared with common colored coatings, the colored solar heat reflective cooling coating has better near infrared reflection or transmissivity, thereby satisfying the latest requirements on industrial standard of building industry. In winter, the coating can be used for remarkably improving the surface and inner temperatures of a coated object such as concrete, metals and woods, can be widely applied to building roofs and exterior walls and further has ideal energy-saving and cooling effects while being used for beautifying the coated building.

The invention discloses a pesticide packaging bottle and a preparation method thereof. The pesticide packaging bottle contains the following components (by weight): 40-50 parts of PE resin, 8-15 partsof LLDPE, 5.5-8.5 parts of nanometer tin antimony oxide, 0.7-1.4 parts of nano titanium dioxide, 5-10 parts of modified hollow glass beads, 1-3 parts of a cross-linking agent, 0.3-0.6 part of an antioxidant, 1-3 parts of butyl stearate, 1-3 parts of a compatilizer, 1-5 parts of a plasticizer, 1-3 parts of a reinforcing agent, and 5-10 parts of zinc borate. The preparation method comprises the following steps: S1: calcination; S2: melt blending extrusion; S3: vacuum reaction; and S4: blow molding. The pesticide packaging bottle of the invention has the advantages of good heat resistance and heat insulation, and high toughness and strength; in addition, the preparation method of the invention has the following advantages: the bottom of the prepared packaging bottle has no joint line, and the bottle body and the bottom are integrated as a whole.

The invention discloses a method for preparing fiber-loaded rutile type TiO2 composite SiO2 aerogel. The method comprises the following steps: performing hydroxylation treatment on fiber by using a piranha solution; soaking the fiber after hydroxylation treatment into a TiO2 solution, loading the surface of fiber after hydroxylation treatment with TiO2 sol by using a soaking-lifting method, and performing high-temperature so as to obtain fiber of which the surface is loaded with rutile TiO2; soaking the fiber of which the surface is loaded with rutile TiO2 into SiO2 sol so as to obtain SiO2 composite sol; performing aging, decontamination, solvent replacement, surface modification and normal-pressure drying on the SiO2 composite sol, so as to obtain the fiber-loaded rutile type TiO2 composite SiO2 aerogel. By adopting the method, not only is the problem that TiO2 is not uniformly dispersed in the SiO2 aerogel solved, but also the mechanical properties and the thermal-insulating heat-preservation properties of the SiO2 aerogel can be improved; by adopting the SiO2 aerogel composite material prepared by using the method, infrared radiation heat conduction can be effectively inhibited, and a relatively low heat conduction coefficient can be achieved.

The invention relates to a yellow near-infrared high reflective coating and a preparation method of the yellow near-infrared high reflective coating. The yellow near-infrared high reflective coating comprises the following components in percentage by weight: 20 to 50% of yellow near-infrared reflective pigments, 10 to 50% of a film-forming matter, 30 to 60% of a solvent and 4 to 30% of an additive. The film-forming matter is organic silicon resin, and the solvent is water or C1-C4 alcohol. The invention further provides the preparation method of the yellow near-infrared high reflective coating. The yellow near-infrared high reflective coating is high in reflectivity, bright in yellow chrominance and good in mechanical properties, and applied to outer surfaces of building exterior facades and top layers or oil storage tanks, vehicles and aircraft shells and ship decks to obviously lower temperature inside a coating material.

The invention provides a doped yellow near infrared reflecting pigment and a preparation method thereof, and belongs to the technical field of inorganic oxide pigments. The chemical formula of the pigment provided by the invention is Bi1-x (Na0.5La0.5) xV1-yMoyO4, wherein x equals to 0.1-0.5 and y equals to 0.1-0.5. Part of Bi3+ ions in BiVO4 are replaced by La3+ ions, and part of V5+ ions in BiVO4 are replaced by Mo6+ ions, so that the use amounts of Bi and V elements can be reduced, and the content of toxic metal elements in the pigment can be reduced; meanwhile, La and Mo are doped in BiVO4to regulate the color of the pigment, so that the colors of the pigment are rich, and the near infrared reflectivity is high. The preparation method of the doped yellow near infrared reflecting pigment is simple in reaction step and easy to operate, and the obtained pigment is complete in crystal form, low in agglomeration degree and high in coloring capacity.

The invention discloses a high transmittance and high reflection heat insulation film. The heat insulation film comprises a first high refractivity film layer, a first low refractivity film layer, a second high refractivity film layer, a second low refractivity film layer, a third high refractivity film layer, a third low refractivity film layer, a fourth high refractivity film layer, a fourth low refractivity film layer, a fifth high refractivity film layer and an antireflection film layer that are stacked in order from the bottom up. All the high refractivity film layers have a thickness of 100-150nm and a refractive index of 2.1-2.4; all the low refractivity film layers have a thickness of 180-250nm and a refractive index of 1.3-1.5nm; and the antireflection film layer has a thickness of 150-500nm. The nine film layers with different high and low refractive indexes are staggered and stacked in order to form an infrared reflective layer, the infrared reflectivity can be improved, then the antireflection layer is compounded to form a heat insulation film so as to improve the transmittance of the whole film layers. All the film layers do not use any metal plating, and the mobile phone signal shielding phenomenon is effectively solved.

The invention provides a double-doped CaAl2O4 type near-infrared reflective pigment and relates to the technical field of inorganic oxide pigments. The provided pigment is a composite metal oxide, metal elements in the composite metal oxide include Ca, Al, Ce and Fe, and Ca, Ce, Al and Fe account for 28.3%, 5.0%, 55.0-61.7% and 5.0-11.7% of the total mole number of the metal elements respectively.The provided pigment is environmentally friendly and free of toxic substances, has the characteristic of color diversity and can be displayed in the color between yellow and brown in a visible lightband along with the change of the doping number of the metal elements, and the near-infrared reflectivity is high at the same time. The invention also provides a preparation method of the pigment. Thesol-gel preparation method is adopted, the process is simple, the pigment with high purity can be prepared at the relatively low temperature, and the method has the advantages that the reaction period is short and the reaction process is easy to control.

The invention discloses a thermal insulation coating for building exterior walls. The thermal insulation coating is prepared from the following raw materials in parts by weight: 50-60 parts of a silicone acrylic emulsion, 18-22 parts of modified aerogel, 7-9 parts of floating beads, 3-4 parts of reinforcing filler, 2-3 parts of mirabilite and 0.6-1 part of auxiliaries. The invention also disclosesa preparation method of the thermal insulation coating. According to the invention, the modified aerogel is added into the coating, the silicon dioxide aerogel can be uniformly dispersed in the coating after being modified, and the aerogel can greatly improve the microporosity in the coating and prolong the heat conduction path, so that the thermal insulation performance of the coating is improved; besides, materials (rutile titanium dioxide and silicon carbide) capable of reflecting radiant heat are introduced to block a propagation path of radiant heat conduction, and a phase change energystorage material (mirabilite) is used as an efficient storage substance of heat energy, so that the coating has excellent heat preservation and heat insulation performance by starting from three paths(conduction, radiation and convection) of heat transfer.

The invention belongs to the technical field of ceramic pigment, and particularly relates to a preparing method of compound superfine yellow ceramic pigment. The preparing method specifically comprises the steps of adding a certain amount of Ni(1-x)EuxTiO3 into a mixed solution of 0.12 g of P123, 50 ml of absolute ethyl alcohol and 0.4 ml of deionized water, then adding a certain amount of tetrabutyl orthotitanate, and dropwise adding ammonium hydroxide after the mixture is uniformly stirred to adjust the pH. Stirring is conducted at a certain speed, then standing is conducted for a certain period, and the product is collected and washed by water three times and absolute ethyl alcohol three times respectively. Drying is conducted, then recalcination is conducted to remove a template, and the product is grinded to obtain the yellow ceramic pigment. The compound superfine yellow ceramic pigment prepared through the method integrates the excellent performance of NixEu(1-x)TiO3 and TiO2, and has the advantages of being fresh in color, high in near-infrared reflectivity, high in chemical stability and the like.

The invention provides reflecting waterborne heat-insulating coating and a preparation method thereof. The reflecting waterborne heat-insulating coating comprises an emulsion, a functional filler, a dispersant, a defoaming agent, a thickener, a film-forming aid, an anti-freezing agent, a pH regulator, a preservative and the balance of water. The functional filler is hollow glass microsphere/titanium dioxide film composite, having core-shell structure; titanium dioxide film is 0.3-0.7 mu m in thickness; titanium dioxide exists in anatase form, and has a coating quantity by weight of 5-25%. Thereflecting waterborne heat-insulating coating prepared herein has good uniformity, has high sunlight reflecting rate, and has small heat conductivity coefficient, good performance stability and excellent heat insulation.

The invention discloses a block lignin-silicon dioxide composite aerogel. Lignin, a cross-linking agent and a chemical cross-linking catalyst are dissolved in polyol, a lignin pre-cross-linked network is constructed through chemical cross-linking to obtain a pre-cross-linked lignin liquid, then a silicon dioxide precursor, a silane coupling agent and deionized water are added, a hydrolytic polycondensation reaction is performed to obtain a lignin/silicon dioxide co-gel network, the lignin/silicon dioxide co-gel network is in full contact with an aqueous solution, hydrophobic self-assembly of the lignin network and in-situ mineralization of silicon dioxide gel are carried out, after the reaction is sufficient, and drying and annealing are carried out to obtain the blocky lignin-silicon dioxide composite aerogel. The preparation of the uniform three-dimensional blocky lignin/silicon dioxide composite aerogel is realized for the first time, and the lignin/silicon dioxide composite aerogel is high in porosity, high in strength, hydrophobic, self-cleaning, low in heat conductivity coefficient and high in infrared reflection capability, and can be developed into a novel light heat-insulating, heat-preserving, fireproof and noise-reducing material.

The invention relates to an infrared reflective coating composition. Counted by dry weight of the composition, the composition comprises the following components in percentage by weight: 1-50 percent of inorganic hollow microspheres, 0.5-70 percent of pigment particles and 20-80 percent of at least one polymer adhesive, wherein each microsphere is provided with at least one cavity; the volume mean diameter of the cavities is 0.01-1,000 mum; and the ratio of the average diameter of the cavities to the average diameter of the microspheres is at least 0.89:1. The invention further relates to an infrared reflective multilayer coating film prepared from the coating composition.

The invention provides a metal ion doped bismuth vanadate yellow pigment as well as a preparation method and application thereof, and belongs to the technical field of inorganic pigments. The metal ion doped bismuth vanadate yellow pigment provided by the invention comprises BiVO4 and Li < + >, Gd < 3 + > and Mo < 6 + > doped in the BiVO4. Lithium ions and gadolinium ions are used for replacing part of bismuth ions in the BiVO4, molybdenum ions are used for replacing part of vanadium ions, the use amount of Bi and V can be reduced, the content of toxic metal elements in the pigment is reduced, meanwhile, the BiVO4 is doped to tune the color of the pigment, and the near-infrared reflectivity of the pigment is improved. The result of the embodiment shows that the reflectivity of the metal ion doped bismuth vanadate yellow pigment provided by the invention in the near-infrared band of 780 to 2500nm is 90% or above.

The invention relates to the technical field of pigments. The invention discloses a Bi3YO6 inorganic pigment doped with an iron/terbium element. The general formula is Bi3-xFexYO6 or Bi3Y1-xTbxO6+delta. The invention provides a series of Bi3YO6 inorganic, non-toxic and high-near-infrared reflection pigments doped with Fe2O3 or Tb4O7. The Bi3YO6 inorganic, non-toxic and high-near-infrared reflection pigments doped with Fe2O3 or Tb4O7 have the advantages that even in dark orange and dark red pigments with a low L*value, the near-infrared reflectivity of the pigment is still higher than that of acommon pigment, and practical application shows that the near-infrared reflectivity and the color forming ability of the novel pigment have a very high application prospect.

The invention belongs to the technical field of ceramic pigments and particularly relates to a spherical compound superfine red ceramic pigment and a preparation method thereof. The preparation methodspecifically comprises the following steps: adding a certain amount of LaFexEu(1-x)O3 into a mixed solution (including 0.12g of P123, 50ml of absolute ethanol and 0.4ml of deionized water), adding acertain amount of butyl titanate, uniformly stirring, and dropwise adding ammonia water so as to adjust pH value; stirring at a certain speed, standing for a period of time, collecting a product, respectively washing the product with water and absolute ethanol for three times; and drying, calcining to remove a template, and grinding the product, so as to obtain the red ceramic pigment. The compound superfine red ceramic pigment prepared by virtue of the preparation method is integrated with the excellent performance of LaFexEu(1-x)O3 and TiO2 and has the advantages of bright color, high near-infrared reflectivity and chemical durability and the like.

The invention discloses a method for improving the near-infrared reflectivity of a yellow pigment, the chemical composition of the yellow pigment is Bi < 2-x > Y < x > Ce < 2 > O < 7 >, x is equal to 0.2-1.0, the method comprises the following steps: (1) at 70-85 DEG C, dropwise adding an ammonium bicarbonate aqueous solution into a metal element-containing solution at a feeding speed of 35-65 mL/min for reaction to obtain a reaction solution, and controlling the pH value of the reaction solution to be 6.6-7.2; (2) carrying out post-treatment on the reaction liquid to obtain a precursor; and burning the precursor to obtain the yellow pigment, wherein the solution containing the metal elements is an aqueous solution containing metal ions; the metal element-containing solution is prepared from bismuth-containing inorganic salt, yttrium-containing inorganic salt and cerium-containing inorganic salt according to the molar ratio of Bi to Y to Ce in the yellow pigment. The method disclosed by the invention is beneficial to improving the near-infrared reflectivity of the yellow pigment and improving the heat-insulating property of the yellow pigment.

The invention provides a natural partition lanthanum cerium oxide reflective heat-insulation color paste and a preparation method thereof. The natural partition lanthanum cerium oxide reflective heat-insulation color paste comprises the following components by 100 parts by weight: 50-70 parts of natural partition lanthanum cerium oxide, 0.5-1.0 part of a dispersant, 0.5-2.0 parts of a defoaming agent, 0.2-1.0 part of a thickening agent, 0.1-0.3 part of a pH regulator, and 26-49 parts of deionized water. According to the color paste prepared by the invention, single natural partition lanthanum cerium oxide is used as a reflective heat-insulation material, the color paste has high near-infrared reflectivity and excellent heat-insulation performance, the surface temperature and the internal temperature of a building can be effectively reduced by adding the color paste into basic paint, and a new choice is provided for a reflective material.

The invention provides reflective heat-insulation lanthanum cerate color paste and a preparation method thereof, and the reflective heat-insulation lanthanum cerate color paste comprises the following components in 100 parts by weight: 60 to 80 parts of lanthanum cerate; 1.0 to 3.0 parts of a dispersant; 1.0 to 3.0 parts of a defoaming agent; 0.3 to 1.0 part of an anti-settling agent; 0.1 to 0.3 part of a pH regulator; and 13 to 38 parts of deionized water. The color paste provided by the invention takes single lanthanum cerate as a reflective thermal insulation material, has high near-infrared reflectivity and excellent thermal insulation performance, can effectively reduce the surface and internal temperature of a building after being added into basic paint, and provides a new choice for a reflective material.

The invention relates to a high-light-reflection phase-change heat storage coating for textiles and a preparation method of the high-light-reflection phase-change heat storage coating. The coating comprises an outer coating, an inner coating and a middle layer between the outer coating and the inner coating, wherein the outer coating is a waterborne polyurethane modified layer; the middle layer is a waterborne polyurethane coating filled with a modified light reflecting material; and the inner coating is a coating which comprises the components of water-based phase change polyurethane and modified phase change microcapsules. The coating has high near-infrared reflectivity and hemispherical emissivity, the problem that the textile is overheated in summer is greatly reduced, the phase change enthalpy value of the coating in the coating is greatly increased, the temperature of the textile can be effectively controlled, and the situation that an existing textile is cold in winter and hot in summer is greatly relieved.