43results about How to "No dark spots" patented technology

The invention provides a polyvinylchloride (PVC) plastic wood plank and a preparation method thereof. The PVC plastic wood plank consists of the following ingredients: PVC, calcium carbonate, wood flour, azodicarbonamide (AC) foaming agents, stabilizing agents, coupling agents, acrylicester (ACR), paraffin wax, stearic acid and fire retardants. By means of the PVC plastic wood plank, appending proportion of the calcium carbonate is enhanced by reducing the amount of the wood flour, and at the same time, by adjusting the amount of the PVC, and the type and amount of other additives, not only can hardness of the plank be greatly enhanced, but also appropriate toughness can be possessed. Therefore, the plank is guaranteed to be not only possess enough hardness when used as wood floors in public places so that damage and sinking of the surface of the plank are not prone to occurring, but also meet requirements of the wood floors due to the toughness of the plank so that the plank can be ensured to be not easy to crack.

The invention relates to the technical field of honeysuckle processing, in particular to a honeysuckle vacuum freeze-drying process which comprises the steps of: pretreatment, placement of raw materials on plates, pre-freezing and vacuum drying. According to the method, an advanced quick-freezing method is utilized, so that the vacuum freeze-drying time is shortened, the energy consumption is reduced, and substances are prevented from being continuously oxidized and decomposed under the action of enzymes in the drying process. The process for processing honeysuckle by vacuum freeze drying is researched for the first time, wherein the process parameters are optimized, so that the heat of supplied materials is minimum, the sublimated water is fastest, the drying time is shortest, the energyconsumed for removing unit mass of water is minimum, and the quality of dried products is best. Components such as organic acids, flavonoids, volatile oils, saponins and the like in the honeysuckle obtained by the method are higher than those of honeysuckle obtained by other methods, the content of chlorogenic acid is 3.19%, and the vacuum freeze drying technology has obvious advantages in the aspect of protecting poor heat sensitivity and volatile components.

The invention provides an LED light focusing and flooding lamp which is suitable for the fixed or the movable illumination of the electric torch, the head lamp and the like. The LED light focusing and flooding lamp comprises a reflector (1) and an LED (2), wherein the LED (2) is arranged in the reflector (1), the front of the LED (2) is provided with a lens (3), and the lens (3) is arranged on an adjustable lens support (4) which can move along the main optical axis of the LED (2). When focusing the light, the LED light focusing and flooding lamp can ensure that the center of the light spot has high light intensity and high luminous flux utilization ratio, and when flooding the light, the LED light focusing and flooding lamp can ensure that no dark spot appears in the center of the light spot and the illumination of the light spot in the center is uniform.

The invention relates to a dry method for manufacturing a fiber board through cow dung, and belongs to the field of environmental protection materials. According to the method, the cow dung is cleaned through bamboo vinegar and then cleaned through a neutral cleaning solution; the cow dung is filtered, dried, crushed and screened to obtain fibers; NaOH solid is dissolved in distilled water to obtain a solution, and the solution and the fibers are evenly stirred at the normal temperature and then placed in a drying case to be activated; after ecological adhesives without formaldehyde is added, the solution and the fibers are placed in a high-speed mixer to be mixed, and then stirring is conducted after waterproof agents are added; drying is then carried out to enable the water content of the fibers to be 7%-12%; the fibers are evenly laid and subjected to slab pre-pressing; the obtained fibers are subjected to hot pressing; and after demolding, the fiber board is obtained after 3-5 days of room temperature cooling. The manufacturing method is simple and low in cost, continuous production can be easily achieved, and the product quality is stable; the obtained board has no black spots or cracks and is free of bubbling, pollution, corrosion and fracturing, and the static bending intensity and the internal combination strength of the board meet national standards; the raw materials are waste, so that reutilization of the waste is achieved.

The invention discloses resin material chip-free cutting equipment and a cutting method thereof, and particularly relates to the technical field of resin material cutting. The resin material chip-freecutting equipment comprises a supporting seat, wherein a cutting assembly is arranged at the top end of the supporting seat; the cutting assembly comprises a linear guide rail, the linear guide railis arranged at the top end of the supporting seat, a cutter holder is arranged at the top end of the linear guide rail, the cutter holder is arranged at the front end of the supporting seat, a motor is fixed inside the cutter holder, a crank rocker mechanism is arranged at the front end of the motor, a high-frequency induction coil is arranged at the bottom end of a linear bearing, the high-frequency induction coil is arranged at the bottom end inside the cutter holder, and a cutting needle head is fixed at the bottom end of the crank rocker mechanism. According to the equipment and method, the cutting assembly is used for melting and cutting a resin workpiece, chips are not generated in the cutting process, so that the quality of the surrounding environment is effectively ensured, the probability of suffering occupational diseases of people is effectively reduced, and the cutting efficiency and the cutting precision are effectively improved through a calibration assembly.

The invention discloses a synthesis process for a TBHQ (Tertiary Butyl Hydroquinone) crude product. The synthetic process comprises the following steps: 1) pouring 2-4 parts by weight of phosphoric acid and 0.1-0.4 parts by weight of water into a stirring cylinder, then adding 5-7 parts by weight of hydroquinone, and stirring; 2) putting the stirred mixture solution into a reaction kettle, heating to 55-65DEG C, and then feeding 7-9 parts by weight of tert-butyl alcohol into the reaction kettle; 3) after heating to 75-85DEG C, and insulating for two to three hours for reaction; 4) performing centrifugal separation, washing and dehydration on a reaction product, to obtain the TBHQ crude product. According to the preparation process for the TBHQ crude product, water instead of methylbenzene is adopted as a solvent, so that the pollution is less, the raw material utilization ratio is high, and the purity of the obtained TBHQ crude product is higher.

The invention discloses a dense black-spot-free iron-based powdery metallurgical self-lubricating CNG engine valve seat ring. The dense black-spot-free iron-based powdery metallurgical self-lubricating CNG engine valve seat ring is prepared from, by weight, 6.4-6.6 parts of chrome, 4.4-4.6 parts of cobalt, 0.7-1.2 parts of nickel, 0.3-0.5 part of neodymium, 2.3-2.6 parts of boron, 3.6-4.3 parts of polymerization iron powder, 16-18 parts of copper, 1.3-1.5 parts of nano molybdenum disulfide, 0.7-0.8 part of calcium fluoride, 1.2-1.4 parts of silicon carbide, 0.2-0.3 part of zinc chloride, 0.5-0.8 part of triethyl silane, 1-2 parts of glass fiber, 2-3 parts of high carbon ferro-chrome alloy powder and 62-65 parts of iron. The surface of the modified nano molybdenum disulfide is coated with a layer of copper film to serve as a solid lubricant which is added to a substrate material, meanwhile the silicon carbide, neodymium, boron and other ingredients are further added, metal particle phase change is changed by adopting sintering, infiltration and heat treatment processes, and the prepared product is uniform in texture, dense, stable and free of black spot and other defects.

The invention belongs to the technical field of lithium ion batteries, and particularly relates to a lithium ion battery diaphragm and a preparation method thereof. The lithium ion battery diaphragm comprises a base membrane layer and a ceramic composite layer, the ceramic composite layer is arranged on the surface of the base membrane layer, the porosity of the ceramic composite layer is 50-80%, and the pore size is 0.1-0.5 [mu]m. According to the lithium ion battery diaphragm disclosed by the invention, the base membrane layer is coated with the ceramic composite layer, and the ceramic composite layer has relatively large porosity and relatively large pore diameter, so that the overall mechanical strength of the diaphragm is improved, the liquid absorption rate is also improved, and the lithium ion transmission rate is increased therefore, the conditions of insufficient electrolyte infiltration, interface black spots, lithium precipitation and low cycle retention rate after high-power and high-rate output or multiple charge-discharge cycles are improved.

The invention discloses an organic electroluminescence device, which comprises a substrate, a display unit, a cover layer, a protection layer and an encapsulation layer in order from bottom to top, and is characterized in that the cover layer contains a refractive index ≥ 1.8 and an absolute value of LUMO. Organic material ≥2.9 eV; the protective layer comprises one or more of cesium fluoroaluminate, magnesium fluoride, aluminum fluoride, and silver fluoride. The organic electroluminescent device of the invention overcomes the problem in the industry that the organic material of the cover layer interacts with the LiF of the adjacent layer due to TFE encapsulation, thereby causing the device to appear black spots, so that the yield is greatly improved and the production cost is reduced.

The invention discloses a novel aluminum profile oxidization and coloring method. The novel aluminum profile oxidization and coloring method comprises the first step of oil removing, the second step of adopting an acid solution to remove an oxidation film on the surface of an aluminum alloy workpiece and then carrying out washing, the third step of carrying out oxidation in an oxidation processing solution, the fourth step of washing, the fifth step of electrolytic coloring and the sixth step of adopting an OY-61 aluminum chemical oxidation sealing agent to carry out sealing treatment. An inventor finds that in the oxidation and coloring stage, EDTA with a certain concentration is used, optimization of other parameters is matched, and an aluminum profile which is not prone to fading, resistant to corrosion, even in coloring, free of dark spots and high in glossiness can be accidentally produced.

The invention relates to an organic electroluminescence device with a covering layer, which comprises: a substrate layer; a first electrode on the substrate; an organic light-emitting function layer, the organic light-emitting function layer a layer on the first electrode; a second electrode on the organic light-emitting functional layer; and a cover layer on the second electrode, wherein the cover layer Including organic compounds, the organic compounds of the covering layer contain different types of heteroarylamine structures, have high glass transition temperature and molecular thermal stability; low absorption and high refractive index in the field of visible light, and are used in OLED devices After the CPL layer, the light extraction efficiency of the OLED device can be effectively improved; the present invention also relates to the use of the organic electroluminescent device containing the covering layer of the present invention for display or lighting equipment.