31results about How to "Strong launch" patented technology

The invention relates to a two-component diatom mud water-based coating with zero VOC emission, which is characterized in that, in parts by weight, it consists of two components, A and B, and component A is 0.5-1 part of potassium persulfate, 30-40 parts of diatom mud powder, 10-15 parts of rutile titanium dioxide, 6-12 parts of far-infrared ceramic powder, 45-75 parts of water, 1-2 parts of leveling agent, 0.3-0.6 parts of defoamer; B The components are 6-12 parts of crosslinkable monomer, 2-4 parts of antibacterial monomer, 0.1-0.3 part of catalyst, 3-5 parts of aqueous stearate, and 15-25 parts of water. The invention has good antibacterial and air purification effects, and has wide application prospects.

The invention provides vacuum ultraviolet induced high colour purity red phosphor. The concrete chemical formula of phosphor is as follows: M (1plus x) M' (1 minus 2x) BP208: Eux, wherein x is more than 0 and less than or equal to 0.3, M is one or several of Li, Na and K, and the M' is one or several of Ba, Sr and Ca. The invention also provides a method for preparing the red phosphor, comprising the following steps: firstly, weighing corresponding raw materials according to the weight ratio expressed in the chemical formula; secondly, carrying out high-temperature roasting on the raw materials and rinsing coasted materials; and thirdly, carrying out separation, filtration, size grading and drying on the rinsed materials to obtain the vacuum ultraviolet induced high colour purity red phosphor having good colour purity and stable chemical property.

The invention discloses a silicate-based red fluorescent powder for LEDs and a preparation method thereof, which uses silicate Ba with a new type of apatite structure 2 Y 4 La 4 (SiO 4 ) 6 o 2 As an initial matrix, by adding luminescent ions Eu 3+ ions, and adjust La 3+ ion and Y 3+ The ratio of ions to get the red phosphor Ba 2 (Y x La y Eu 1‑x‑y ) 8 (SiO 4 ) 6 o 2 , where x+y<1; the phosphor is characterized by adjusting Y 3+ Ions and La 3+ The relative content of ions regulates the Eu 3+ The coordination environment of ions can obtain better luminescence performance. The red fluorescent powder provided by the present invention can emit bright red light in the range of 617-619 nm under near-ultraviolet excitation. The fluorescent powder has high luminous efficiency, good thermal stability, short afterglow time, stable physical and chemical properties, and cheap and easy preparation raw materials. The method is simple and easy to repeat, which is beneficial to industrial production and has broad application prospects.

The invention provides a fluophosphate-based light-emitting material and a preparation method thereof. The light-emitting material has a chemical formula of MyRe1-xLnxPO4Fy, wherein M is an alkali metal element, Re is a rare earth element, Ln is Dy or u, x is 0.05-0.5 and y is 1 or 2. The preparation method comprises the following steps of: selecting source compounds of corresponding ions according to the mol ratios of corresponding elements in the formula and allowing the source compounds in phosphate radical ions to be exceeded by 5-30 percent according to the mol ratio; mixing the source compounds; carrying out pre-sintering treatment on the mixture and cooling; and taking out a sintered substance, grinding and calcining to obtain the light-emitting material. In the light-emitting material, the fluophosphate matrix is utilized to strongly absorb a vacuum ultraviolet waveband so as to increase the light-emitting efficiency; meanwhile, the fluophosphate matrix has stable physicochemical characteristics. The material has the advantages of low preparation temperature, energy saving, cost reduction and broad production and application prospects.

The invention relates to the field of luminescent materials, and discloses a broadband ultraviolet excited green luminescent material and a preparation method thereof. The composition of this broadband ultraviolet excited green luminescent material is: ZnO:xS:yM, wherein M is a halogen element, 10-3≤x≤10-2, 10-3≤y≤10-2. The preparation method is as follows: fully grind and mix the zinc-containing matrix raw material and the halogen salt to obtain a precursor, sinter the precursor at 700-800°C for 1-2 hours and then grind; In terms of group elements, the molar ratio of zinc element to halogen group element is 1:0.01-1:0.2. The green luminescent material excited by broadband ultraviolet of the present invention has strong absorption in the long-wave ultraviolet region of 300-430nm and strong emission in 450-600nm. The preparation method has the advantages of simple operation, low raw material price and little pollution, and is suitable for industrialized production.