151results about How to "No penetration" patented technology

The invention relates to a halogen-free non-cleaning soldering flux for a lead-free solder wire, and belongs to the soldering flux field. According to the weight ratio, the invention comprises the following elements that: 4 to 18 wt percent of organic acid active agent, 10 to 30 wt percent of organic solvent, 1 to 6 wt percent of pasting agent, 0.2 to 3wt percent of stabilizer, 0.5 to 5wt percent of thixotropic agent, 0.5 to 4wt percent of surface active agent, 0.5 to 5wt percent of rust inhibition, and the rest comprises colophony. The invention includes no halogen, the speculummetal has no breakthrough after being welded, the insulation resistance is high, and the soldering performance is good, the problem of the potential solder joint short circuit caused by the soldering flux of the prior welding wire that the colophony content is too high, the smoke is large and the derelict is easy to be flaked away is solved, the invention is smooth and has no absorption of moisture under normal temperature, no cleaning is required after being welded, and the welding requirement of normal product can be met.

The invention discloses a water-based paint remover applied to zipper production and a preparation method thereof, and belongs to the technical field of paint cleaning. The water-based paint remover is characterized by consisting of the following components in parts by mass: 20-30 parts of a main solvent, 25-35 parts of a cosolvent, 10-20 parts of an activating agent, 3-5 parts of an emulsifying agent, 8-10 parts of a penetrating agent, and 20-25 parts of deionized water, wherein the main solvent is one of or a combination of two or more of the solvents including N-methyl-2-pyrrolidone, butylcellosolve, propylene carbonate, dimethyl sulfoxide, benzaldehyde, and methyl methacrylate; the cosolvent is one of or a combination of two or more of the solvents including Y-butyrrolactone, benzyl alcohol, ethanol, and propanetriol; and the activating agent is one of formic acid, acetic acid, oxalic acid and salicylic acid. The water-based paint remover disclosed by the invention can remove paint on a zipper paint spraying pot and a zipper head at a normal temperature, is noncorrosive to equipment, does not pollute the environment and generate wastewater, and can be used repeatedly.

The invention discloses a casting technology of a wear-resistant and low-porosity steel casting. The casting technology takes silica sand, bentonite, an additive and water as molding materials, and comprises the steps of preparing a casting mould by mixing the molding materials; drying the prepared casting mould with hot air at the temperature of 130-140 DEG C; injecting the dissolved metallic solution into the casting mould, and pouring a semi-finished product; carrying out heat treatment on the semi-finished product, polishing and machining to obtain the finished product; checking and putting into a storage. After the casting technology is adopted, the wear resistance and the toughness of the casting are greatly improved, the pores in the casting are reduced, and the service life of the casting is prolonged; furthermore, the casting technology is simple in operation and low in cost.

The invention discloses a production method and a device for a colored filter. The production method is as follows: four heat transfer films with color layers are respectively obtained; one heat transfer film is adhered on the surface of a substrate of a colored filter, a rectangular laser beam is adopted to instantaneously irradiate the corresponding position of the heat transfer film according to the arrangement positions of picture elements, so that the color layer of the heat transfer film is transferred onto the surface of the substrate, the irradiation positions are adjusted, and the steps are repeated to realize the transfer of all the picture element units with the same color; the heat transfer film is replaced, the steps are repeated so that the four colors are transferred, thereby obtaining the needed colored filter. During the whole process of the invention, the relative position of the substrate does not change, which solves the problem that the prior method needs a high-precision contraposition, and can control the size of picture element patterns through the size of light spots of the laser; at the same time, the method is applicable to the production of flexible colored filters.

The invention provides a high-elongation-rate heat-resistant aluminum alloy suitable for gravity casting and a preparation method thereof. The alloy comprises the following elements of, by weight, 9.0-12.0% of Si, 0.05-0.4% of Cu, 0.02-0.05% of Mg, 0.05-0.1% of Sc, 0.6-0.8% of M and and the balance Al and inevitable Fe impurities, wherein the M comprises at least two elements of Ti, Zr and V. After gravity casting of the high-elongation-rate heat-resistant aluminum alloy suitable for gravity casting, room-temperature yield strength of the as-cast alloy can reach 143-152MPa, the elongation ratecan reach 8.0%-12.0%, high-temperature tensile strength at 200 DEG C can reach 158-170MPa, the high-temperature elongation rate can reach 10.0%-20.0%, the room-temperature yield strength and heat resistance are excellent, the alloy can be applied to automobile parts without solid solution heat treatment, so that the requirements of light-weight development of automobiles can be met.

The invention relates to the technical field of papermaking, in particular to a method for making a low basis weight manila board from wood fiber. The method comprises the steps of: A. dissolution, i.e. dispersing wood fiber and conducting dissolution treatment to obtain a wood fiber slurry; B. beating, i.e. conducting beating treatment on the wood fiber slurry subjected to dissolution treatment; C. coarse screening, i.e. conducting coarse screening treatment on the wood fiber slurry subjected to beating treatment; D. purification, i.e. mixing the wood fiber slurry subjected to coarse screening treatment with an MW slurry, then carrying out fine screening, slag removal, concentration and heat dispersion treatment, thus obtaining a core layer slurry for making coated white board paper; E. papermaking, i.e. processing a surface layer slurry, a lining slurry, a bottom slurry and the core layer slurry prepared by step D to obtain the low basis weight manila board. The method provided by the invention can effectively improve the bulkness of finished paper, reduces the paper basis weight exceeding problem, at the same time avoids the penetration point problem of thick and large wood fiber in finished paper, and greatly reduces the production cost.

The invention relates to a coupling agent modified silicon dioxide doped cycloaliphatic epoxy resin LED packaging adhesive. The adhesive is characterized in that: it is composed of component A and component B that are mixed in a ratio of 1: (0.9-1) for construction. Specifically, the component A consists of cycloaliphatic epoxy resin, an active diluent, a transparent blue-violet purple dye color paste, a defoaming agent and a softening agent. The component B consists of a curing agent, an accelerator, a silane coupling agent modified nano-ultraviolet absorbent, polyol and an antioxidant. The nano-silicon dioxide doped cycloaliphatic epoxy resin LED packaging adhesive provided in the invention has the advantages of good ageing resistance, strong binding power, fast curing, low viscosity and moisture absorption, so that employment of organosilicone with a high cost can be avoided. Meanwhile, the defects of high moisture absorption, poor ultraviolet resistance and low shortwave transmittance and the like of existing bisphenol A type epoxy resin can be overcome. The LED packaging adhesive provided in the invention is more suitable to be used as a high-end LED packaging adhesive, a high power LED packaging adhesive or an ultraviolet light-based white light and blue light LED packaging adhesive.

The invention discloses a roof greening method by using callisia repens, in particular to a growing method for planting callisia repens on roof. The procedures of the method are as follows: first, a water-resistant system, a drainage system and a root resistant layer are arranged on the roof and a matrix layer is paved on the roof; second, grass seeds of the callisia repens is planted on the matrix layer by using any one method of offshoots, broadcasting sowing method, cottage or greensward transplanting and paving method; third, root fixing water is watered and N fertilizer is fertilized once every fifteen days, and lawn is formed within one to two months. As an effective measure for solving the influence of urban development on the entironment and raising the urban afforestation rate, the invention uses the callisia repens on the roof greening, which has a resultful effect on the heat resistance, virescence and disaster prevention of room surface.

The invention discloses an artificial stone plate and a manufacture method of the artificial stone plate. A recipe of the artificial stone plate consists of the following ingredients in percentage by mass: 28 percent to 30 percent of unsaturated polyester resin, 40 percent to 65 percent of aluminium hydroxide, 5 to 30 percent of shells crushed into shells with the grain diameter being 1 to 5cm, 0.02 percent to 0.04 percent of cobalt naphthenate, 0.03 percent to 0.05 percent of methyl ethyl ketone peroxide and 1 percent to 2 percent of pigment paste. The artificial stone plate and the manufacture method have the advantages that 1, the shell plate has the effects that the environment is protected, and the toxicity and the radiation are avoided; 2, the artificial plate has uniform density from the inside to the outside and is solid and integral, the surface is smooth, no fine hole exists, the germ propagation is effectively avoided, and the cleaning is easy; 3, the color is gorgeous, the free matching of the color of the shell plate can be realized, and the effect is incomparable with the single performance of the natural rock; 4, the shell plate can be processed in a seamless split joint manner, and the shell plate can be easily bent to be made into various shapes; and 5, the invention also provides the manufacture method of the artificial stone, which has the advantages that the process is simple, and the manufacture is safe and convenient.

The invention relates to a modified nano zinc oxide doped cycloaliphatic epoxy resin light-emitting diode (LED) packaging adhesive. The modified nano zinc oxide doped cycloaliphatic epoxy resin LED packaging adhesive is characterized by being composed of a component A and a component B, the component A and the component B are mixed according to the ratio of 1: (0.9-1.0), and then the packaging adhesive is used for construction. The component A is composed of a cycloaliphatic epoxy resin, a reactive diluent, transparent royal purple dye color paste, an antifoaming agent and a softening agent, and the component B is composed of a curing agent, an accelerating agent, a silane coupling agent modified nano ultraviolet absorption agent, polyatomic alcohol and an antioxidant. The modified nano zinc oxide doped cycloaliphatic epoxy resin LED packaging adhesive is high in transparency, good in ultraviolet aging resistance performance, high in adhesive power, rapid in solidification and low in viscosity; and according to the packaging adhesive, high-cost organosilicone isn't used, defects that existing bisphenol A epoxy resins are high in moisture absorption, poor in ultraviolet resistance performance and low in short-wave transmissivity are overcome, and the modified nano zinc oxide doped cycloaliphatic epoxy resin LED packaging adhesive can be used as a high-end LED packaging adhesive, a high-power LED packaging adhesive or an LED packaging adhesive based on white light and blue light of ultraviolet light.

The invention discloses a medical digital ink-jet printing paper. The medical digital ink-jet printing paper comprises a printing base paper of which both surfaces are coated with sprayed films. The surfaces of the printing base paper are coated with coatings. The printing base paper comprises a raw paper as an interlayer and the polyethylene sprayed films coated on the surfaces of the raw paper. The polyethylene sprayed film comprises, by weight, polyethylene, dicumyl peroxide and TiO2. The coating comprises, by weight, nanoscale SiO2, nanoscale TiO2, nanoscale Al2O3, PVA, polyacrylate, a stabilizer and mercaptobenzimidazole. The medical digital ink-jet printing paper has the advantages that in production, environmental pollution is small; in use, ink-jet printing does not produce harmful gas such as ozone; and the medical digital ink-jet printing paper can be naturally degraded and can produce small environmental pollution.

A moisture-proof cupboard features that its main body is made of the basic plates which may be metallic plates, plastic plates, and concrete slabs, and the artificial marble plates are attached to the visual surfaces of main body for making it more beautiful.

The invention discloses printing ink with good color fixation and no penetration. The printing ink is characterized by being prepared from the following raw materials in parts by weight: 20-30 parts of edible alcohol, 1-2 parts of table salt, 0.4-0.8 part of potassium sorbate, 0.02-0.04 part of chamomile essential oil, 3-6 parts of soybean oil, 4-6 parts of castor oil, 7-9 parts of soybean residue, 2-5 parts of castor shells, 3-5 parts of chestnut shells, 1.2-2.5 parts of xanthan gum, 6-8 parts of maltose syrup, 0.03-0.06 part of capsanthin, 13-16 parts of monascus colors and 5-7 parts of additives. The printing ink prepared by adopting the soybean oil, castor oil, soybean residue, castor shells, chestnut shells, monascus colors and other pure natural substances and taking the xanthan gum as a thickening emulsifier has the advantages of good color fixation, no penetration, strong alkali resistance, water resistance, oil resistance, freezing resistance and the like. the printing ink disclosed by the invention can be directly printed on the surfaces of foods and medicines, has bright color, stable performances and good flowability, viscosity and adhesion, is easy to recycle, does not cause great harm to an environment and human bodies, and can meet the color printing needs and meet the eating requirements of a related standard designated by the state.

The invention discloses a general all-weather source-free safe caution lamp with an equipotential electric transmission and distributing line. The left side of a lamp body is connected with a left electric transmission wire hook and the right side of the lamp body is connected with a right electric transmission wire hook. The left electric transmission hook and the right electric transmission hook are respectively in a form that a forward opening is connected with the electric transmission and distribution line in a hung mode and a backward opening is connected with the electric transmission and distribution line. A locking mechanism which can be adjustable vertically and fixes each hook with the electric transmission and distributing line is arranged below each hook opening. The lamp body comprises a lamp tube. A solar panel is installed on the lamp tube and is connected with a storage battery through a circuit. The solar panel and the storage battery are connected with a light-emitting diode (LED) lamp bead through a circuit. The general all-weather source-free safe caution lamp with the equipotential electric transmission and distributing line is reasonable in structure. Under the conditions that illumination intensity is weakened at dusk and night falls, alarming flashing light can be emitted so that various travelling vehicles under the electric transmission line spanning a road are reminded or cautioned to keep off the electric transmission line. The general all-weather source-free safe caution lamp with the equipotential electric transmission and distributing line is mainly used for external force prevention of the electric transmission line of an electric system.

The invention relates to an ultraviolet-resistant nano titanium dioxide doped cycloaliphatic epoxy resin LED (light emitting diode) packaging glue which is characterized by comprising a component A and a component B, wherein the components A and B are mixed according to the proportion of 1: (0.9-1.0) and then used for construction; the component A comprises cycloaliphatic epoxy resin, a reactive diluent, a transparent bluish violet dye color paste, a defoaming agent and a flexibility agent; and the component B comprises a curing agent, an accelerating agent, a nano ultraviolet absorbing agent, polylol and an antioxidant. The ultraviolet-resistant nano titanium dioxide doped cycloaliphatic epoxy resin LED packaging glue has the characteristics of high transparency, good ultraviolet ageing resistance, strong binding power and low moisture absorption, avoids adopting organic silicon with high cost, overcomes the defects of high moisture absorption, poor ultraviolet resistance, low short wave transmissivity and the like of the traditional bisphenol A epoxy resin, and is more suitable for being used as an ultraviolet-based white light and blue light LED packaging glue. The ultraviolet-resistant nano titanium dioxide doped cycloaliphatic epoxy resin LED packaging glue has the advantages of good performance, low cost and simple process, and is suitable for industrial massive production.