308results about How to "Does not affect health" patented technology

The invention provides a flux used in aluminum and alloy melt processing, and a preparation method thereof. The flux is mainly composed of potassium chloride, magnesium chloride and fluoride salt, wherein potassium chloride accounts for 25-65%, magnesium chloride accounts for 30-70%, fluoride salt accounts for 2.5-25%, and the total amount of the components is 100%. The preparation method comprises the steps that: the components are placed in a crucible, and are molten under high temperature; the materials are uniformly mixed; the obtained mixture is poured out, cooled, and solidified; the obtained material is crushed and sieved, and is sealed by using packages. The flux is a refining agent needed in an aluminum alloy smelting process, and has a good refining effect. With the flux, impurities such as alkali metal elements of sodium, calcium, and lithium, and oxides can be effectively removed, and a good slag removing effect is provided.

The invention relates to a dust-reducing device for building construction, in particular to a fast dust-reducing device for building construction. The technical problem to be solved by the present invention is to provide a rapid dust reduction equipment for building construction that can wet the ground and further reduce dust in places with a lot of dust, without affecting the health of workers and polluting the environment. In order to solve the above technical problems, the present invention provides such a rapid dust reduction equipment for building construction, including a bottom plate, etc.; the left and right sides of the bottom of the bottom plate are connected by bolts to install wheels, the wheels are arranged symmetrically, and the left side of the bottom plate is connected by bolts. The connection method is installed with a push handle, and the push handle is inclined, and the left side of the top of the bottom plate is installed with a 7-type plate through bolt connection. The invention achieves the effects of being able to wet the ground, and further reducing dust in places with a large amount of dust, thereby not affecting the health of workers, and not polluting the environment.

The invention discloses a color glass-reinforced plastic profile material made from a novel reclaimed material. The color glass-reinforced plastic profile material is made from raw materials, such as recycled PVC (polyvinyl chloride), modified nano calcium carbonate, a calcium zinc stabilizer, stearic acid, di-n-octyl phthalate, plasticizer, chlorinated polyethylene, ABS (acrylonitrile-butadiene-styrene) high rubber powder, polyethylene wax, paraffin, acrylate impact modifier ACR, MBS (methyl methacrylate), iron oxide red, carbon black and a pigment. According to the color glass-reinforced plastic profile material, the calcium zinc stabilizer substitutes a lead salt stabilizer, so that the color glass-reinforced plastic profile material is safer and harmless and does not affect the health of human bodies. A waste glass-reinforced plastic profile material or an unqualified glass-reinforced plastic profile material is effectively utilized, so that the reutilization of the glass-reinforced plastic profile material is realized, a large number of raw materials are also saved in a production process, white pollution is reduced, our natural environment is more protected, and the policy requirements of energy conservation and environment friendliness are met. The profile material made from the recycled PVC has all the characteristics of the profile material made from the raw materials as well as the characteristics of smoother surface, better density, better toughness and the like.

The invention relates to a method for measuring voidage of an asphalt concrete pavement core. The method is characterized by comprising the following steps of: respectively measuring the bulk density of an asphalt concrete pavement core sample and the maximum theoretical density of the asphalt concrete pavement core sample, and calculating the density according to a formula. The method for measuring voidage of the asphalt concrete pavement core is easy, convenient, feasible, real and reliable in data, low in cost and pollution-free and has high innovativeness.

The invention relates to a lead-free environmentally friendly soldering flux and a preparation method thereof. The method comprises the following steps of: mixing synthetic organic acid, an activating agent and a mixed alcohol solvent at normal temperature according to a component formula; pouring an obtained mixture into a stainless steel container, and then adding modified rosin particles; stirring materials in the container until the rosins are all dissolved, and then stopping stirring; and standing still, filtering and hermetically packaging to obtain a soldering flux product. The lead-free environmentally friendly soldering flux is a no-clean soldering flux with low solid content, less rosin and no halide, has the characteristics of quick dry, bright and firm welding spot, uniform spreading, full structure, no corrosivity, excellent solderability, good soldering wetting, stable property, and the like, conforms to the property requirements of various electrical appliances and is suitable for soldering computers and peripheral equipment or high-precision multilayer board electronic assemblies. When in use, the soldering flux product has the advantages of low smoke, no pollution to working environment, no influence on the human health, no pollution to tracks and clamps of a tinning furnace, higher insulating impedance, good environment friendly performance and stronger market competitiveness.

The invention discloses a multifunctional water-based cleaning agent, which consists of the following raw materials in percentage by weight: 7 to 14 percent of propanediol methyl ether acetate, 5 to 15 percent of diethylene glycol monobutyl ether, 1.5 to 5 percent of monoethanolamine, 0.5 to 2 percent of octyl phosphate, 0.1 to 0.3 percent of defoamer, 1.5 to 5 percent of ethanol and 62.2 to 81.4percent of water. The multifunctional water-based cleaning agent is environment-friendly, high in safety, non-toxic, non-corrosive, pollution-free, low in using cost, safe and stable, has multiple cleaning functions and is used for cleaning red gum, solder paste, rosin, printed circuit board (PCB) carriers and the like.

The invention relates to the technical field of antibacterial mildew inhibitors, and provides a long-acting antibacterial mildew inhibitor, a preparation method thereof, and an application of the long-acting antibacterial mildew inhibitor in a space station environment. The long-acting antibacterial mildew inhibitor takes an organosilicon quaternary ammonium salt as a main sterilization component,can inhibit bacteria, saccharomycetes and fungi for a long time, is high in safety, and has no acute toxicity or accumulated toxicity hidden danger; the antibacterial mildew inhibitor has long-actingantibacterial and mildew-proof performance, and bacteria and mildew do not easily generate drug resistance; no color change hidden danger or toxic component exists, and long-term storage can be achieved; and furthermore, propylene glycol and the like are used as stabilizers, so the VOC release amount can be reduced, and the situation that toxic gas such as methyl alcohol volatilizes in the special environment of the space station and affects the health of astronauts is avoided. The long-acting antibacterial mildew inhibitor can meet the long-acting antibacterial and mildew-proof requirementsof aluminum alloy and textiles in a space station cabin, the VOC release amount of the product is low, and the air quality requirement of the space station is met.

The invention discloses a method and system for controlling the internal and external circulation of an automobile, which belongs to the field of automobiles and is used to automatically switch the internal and external circulation of an automobile air conditioner. The method includes: detecting gaseous pollutants in the external environment of the automobile, the gaseous pollutants include at least one of the following: carbon monoxide, nitrogen dioxide, sulfur dioxide, ammonia, hydrogen, and dust; the gaseous pollutants in the external environment of the automobile exceed a threshold , switch the car from the outer circulation state to the inner circulation state, wherein the outer circulation state is a state in which the environment inside the vehicle is connected to the environment outside the vehicle, and the inner circulation state is a state in which the environment inside the vehicle is isolated from the environment outside the vehicle. The invention is used for switching the internal and external circulation of the automobile.

The invention relates to water-soluble environmental-protection composite printing ink which comprises the following components by weight: 3-18% of acrylic resin, 20-40% of acrylic emulsion, 12-45% of deionized water, 1-12% of ethanol amine, 1-12% of ethanol, 6-38% of pigment, 0.1-1.3% of pH stabilizer, 0-1.2% of anti-settling agent and 0.5-6% of adhesion enhancer. The sum of components of the composite printing ink is 100%. The invention further discloses a preparation method of the composite printing ink. The composite printing ink does not contain organic solvents such as benzene and ketone and the like, is free of solvent residues, environment-friendly and non-toxic, completely meets environmental-protection and national food hygiene safety requirements, can be used for high-grade package printing such as food packaging, medicine packaging and packaging of articles of everyday use, and is particularly suitable to oriented polypropylene (OPP) film composition (treatment degree achieves 38 dynes or higher).

A substitute of tobacco shreds, a substitute of smoking requisite, and their smoking method are disclosed. Said substitute of tobacco shreds contains the basic tobacco substitute consisting of nicotine and tobacco oil, and can be loading in a semi-closed space of the substitute of smoking requisite directly or after it is loaded in an atomizer for sucking its gasified substance by the smoker.

The invention discloses a heat pump air-conditioning system of a fuel cell vehicle. The heat pump air-conditioning system comprises a compressor, a four-way reversing valve, a vehicle interior heat exchanger, a throttling valve, a vehicle exterior heat exchanger, a methanol water storage container, a conveying pump, a reformer, a fuel cell, a power conversion system, a vehicle motor and a residual air mixer, wherein the reformer generates high-temperature residual air and discharges the residual air to the residual air mixer or the outside; the residual air mixer is used for mixing external air with the high-temperature residual air to produce intermediate-temperature mixed air and outputting the intermediate-temperature mixed air to the outside; the fuel cell is used for generating electric energy through an electrochemical reaction between hydrogen and oxygen and outputting the electric energy; the power conversion system is used for converting the electric energy output by the fuel cell into electricity required by a load to supply power to the compressor, the conveying pump and the vehicle motor. The heat pump air-conditioning system can still efficiently and normally work under a heating working condition, when the outdoor air is lower than 5 DEG C, an evaporator cannot frost, power demands of the vehicle motor can be met, the noise and the energy consumption are low, and air and environment cannot be polluted.

The invention relates to a water treatment system, in particular to an ozone water treatment system with full automatic operation in the control and operation process. The system comprises a water pipe, a control cabinet and an ozone machine; the ozone machine is also connected with a pure oxygen machine through an air pipe; the water pipe from a water inlet to a water outlet is sequentially provided with a booster pump and a pressure meter; the water inlet and the water outlet of the water pipe are provided with a maintenance valve respectively; a water current switch and an oxidation-reduction monitoring device are arranged between the maintenance valve of the water inlet and the booster pump; a stream ejector and a mixed tank device are arranged between the pressure meter and the maintenance valve of the water outlet; after the booster pump is started up, the water current switch can emit a signal to the control cabinet; and the control cabinet starts up the ozone machine. The water treatment system has the advantages that the system can control the concentration of ozone in the water within certain range, has full automatic operation in the whole control process and reduces cost; according to a signal of an ORP probe, the system has automatic clearance operation, reduces consumption and prolongs the service life; the mixed tank device has simple design and manufacture and low cost; and the system has high safe coefficient.

The invention discloses a permeable water plugging modified phenolic resin injecting paste material for an underground coal mine and a preparation method and aims to solve the problem that a water plugging effect is not ideal by adopting a traditional material. The preparation method is characterized by comprising the following steps of preparing a component A from phenol, formaldehyde, barium hydroxide, oxalic acid and urea, preparing a component B from phenolsulfonic acid, phosphoric acid and para-toluenesulfonic acid, and then, mixing the component A and the component B in weight ratio of 1:1. The material disclosed by the invention is low in viscosity and high in liquidity and is capable of completely plugging ultra-thin cracks, is high in curing time which is adjustable on site within a range of 5-60 seconds; a polymer cannot be pulverized, is stable when meeting water and is capable of permanently plugging the cracks. The material reaches a fire-retardant level and is environmentally friendly; production raw materials are completely domesticated and are pollution-free; the construction is simple; the operation is simple and easy to implement; the environment cannot be polluted during a production process, and the health of workers is not influenced.

The invention discloses a dehumidifying colorless PET (polyethylene Terephthalate) color master batch which is prepared from the components in percentage by weight as follows: 40-60% of carrier, 1-3% of coloring agent, 1-3% of dispersant, 5-15% of dehumidifying additive and 15-25% of nucleating agent. The invention further discloses a preparation method of the dehumidifying colorless PET color master batch. According to the dehumidifying colorless PET color master batch provided by the invention compared with color master batches marketed with similar functions, the price is more economical, and the production cost of a plastic process is reduced. With the adoption of an integral production mode, the production process is reduced and the energy resources are saved. According to the invention, the structure of PET grains is further changed, so that the crystallizing efficiency is improved, the mechanical performance is increased, the forming period is shortened and the economic benefit of enterprises is improved. According to the invention, novel components are adopted, and the use level of harmful substances is reduced, so that the harmful substances are substantially not volatilized without affecting the health of a human body. The color master batch is suitable for application and use in the manufacturing industry.

The invention provides a multilayer composite film, which comprises an outer layer, an ink treatment layer, first adhesive, a middle layer, a bottom layer, second adhesive and a high-isolation treatment layer, wherein the outer layer is used as a printing base material and can be used for printing a pattern on an inner surface of the surface through ink treatment, the first adhesive bonds the inner surface of the outer layer with the middle layer, the middle layer is arranged below the inner surface of the outer layer, the bottom layer is arranged below the inner surface of the middle layer, the second adhesive bonds the inner surface of the middle layer with the bottom layer, or a second middle layer and third adhesive are arranged below the middle layer, and the high-isolation treatment layer is coated at a preset position of the internal part of the multilayer composite film to realize isolation structure treatment. Therefore, through the high-isolation treatment layer, the ink and the adhesive are isolated and prevented from being volatilized and dispersed, and the environmental-friendly, nontoxic and pollution-free multilayer composite film is obtained.

The invention discloses a method for tracking the gesture of a human body. A portable device with a three-axial accelerating sensor can be worn by a human body and used for tracking the gesture of the human body. The data can be collected from the sensor in a timely (such as 1 second) capturing manner, the gesture of an emitter device is recovered according to the collected data, and then the corresponding gesture of the human body is calculated. A receiving device displays the calculated gesture of the human body on a screen in a three-dimensional model manner, and also can judge if the data reaches the alarm range, if so, the alarm is generated by a preset method, and the corresponding data is displayed.

The invention discloses a direct-fired auto-warming biomass gasifier, which comprises a furnace body of an updraught gasifier in the prior art, an ash outlet, a discharge chimney and a fan, and is characterized in that: a cooking range is arranged on the upper part of a hearth and is integrated with the furnace body; an auto-warming pyrolysis combustion cooking range and a closed pot holder are arranged; a fuel gas releasing tube and a fuel gas releasing valve leading to the discharge chimney are arranged on one side of the top part of the hearth; one side of the upper part in the furnace body is provided with a charging hole; and a manually rotated ash dispelling, blanking and air intake device is arranged at the bottom of the hearth. The direct-fired auto-warming biomass gasifier has the advantages that: pipelines and a stove eye are not blocked caused by condensation and deposition any more; thermal efficiency is improved; pungent smell is removed; fuel does not overflow any more when a cover is uncovered to feed materials; indoor air is not polluted; the gasifier is not burnt out and fire is not cut off any more; ash is easily dispelled and the materials fall easily; and normal combustion and gas generation are guaranteed. The direct-fired auto-warming biomass gasifier is more suitable for popularization and application in energy conservation and emission reduction and construction of new rural communities.