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300results about How to "No harm to health" patented technology

Preparing method of environment-friendly solvent-type electrostatic spinning waterproof and moisture-permeable membrane

The invention provides a preparing method of an environment-friendly solvent-type electrostatic spinning waterproof and moisture-permeable membrane. The preparing method is characterized by comprisingthe steps of 1, preparing a high-molecular polymer solution with water or environment-friendly alcohols being solvents, adding a corresponding water-soluble or alcohol-soluble water repelling agent and cross-linking agent, and preparing a hydrophobic fiber membrane through an electrostatic spinning technology; 2, conducting aftertreatment on the fiber membrane to trigger a chemical crosslinking reaction between a polymer matrix and the cross-linking agent, reinforcing the water resistance of the fiber membrane and regulating the pore structure of the fiber membrane to obtain the environment-friendly solvent-type electrostatic spinning waterproof and moisture-permeable membrane. In the production process, no waste gas, waste water and solid waste are generated, the environment cannot be damaged, the prepared waterproof and moisture-permeable membrane does not contain toxic solvents, and in the actual application, the healthy of a wearer cannot be damaged; the resistance to water pressure of the fiber-based waterproof and moisture-permeable membrane is larger than or equal to 150 kPa, the moisture permeability is larger than or equal to 15,000 g/m<2>/d, the tensile breaking strengthis larger than or equal to 30 MPa, and the environment-friendly solvent-type electrostatic spinning waterproof and moisture-permeable membrane has a large application prospect in the field of functional protective clothes.
Owner:DONGHUA UNIV

Reaction device for simulating migration and transformation of soil organic pollutant

The invention discloses a reaction device for simulating migration and transformation of a soil organic pollutant, relates to a reaction device, and solves the problem that existing leaching experiment equipment for simulating the migration and transformation of the soil organic pollutant is large in experimental error, low in equipment use ratio and poor in adaptability The reaction device comprises a first water box, a second water box, a water pump, a water inlet pipe, a steady flow pipe, a support, a supporting frame, a base, a fixed plate, a first regulating valve, a second regulating valve, multiple flowmeters, multiple sieve hole plates, multiple earth pillars and multiple fifth regulating valves, wherein the first water box, the support and the supporting frame are all arranged on the base; the fixed plate is connected with the supporting frame, and the second water box is supported through the supporting frame; the supporting frame is provided with the multiple earth pillars which are vertically arranged, each flowmeter is arranged right above each earth pillar, the multiple flowmeters are fixedly arranged on the fixed plate, and the sieve hole plates are fixedly arranged on the support. The reaction device disclosed by the invention is used for simulating the migration and transformation of the soil organic pollutant.
Owner:NORTHEAST AGRICULTURAL UNIVERSITY

Spray paint waste gas purification device and purification method therefor

The invention discloses a spray paint waste gas purification device and a purification method therefor; the spray paint waste gas purification device comprises a body, a liquid supplementing box arranged outside the body, a circulating water pump and a draught fan, wherein the body is separated into an upper layer and a lower layer by a transverse clapboard, the upper layer and the lower layer are communicated at the left side, and a demister is arranged at the communicating part; the upper layer of the body is provided with a low temperature plasma reactor unit and an activated carbon adsorption unit, and the plasma unit is connected with a high voltage pulse power supply; the upper part of the lower layer inside the body is provided with a spray pipe network and a nozzle, wherein the circulating water pump is communicated with the spray pipe network and the liquid supplementing box; the lower layer is provided with a filler filter screen and polyhedral ball filler; the bottom of the lower layer is provided with a liquid storage box which is internally provided with alkali liquor; the purification method comprises: spray paint waste gas is purified by being sprayed with the alkali liquor and passing through the filler filter screen, water mist is removed by the demister, and then the obtained spray paint waste gas is purified by the low temperature plasma reactor and is finally purified by absorption of active carbon. Therefore, the device and the method has high purification efficiency, the discharged waste gas reaching national emission standard, low energy consumption and being safe and reliable.
Owner:蔡宇峰

High heat conductivity graphene coating for heat dissipation device and preparation method and application

The invention relates to a high heat conductivity graphene coating for a heat dissipation device and a preparation method and application. The high heat conductivity graphene coating disclosed by theinvention is prepared through the following steps: preparing graphene dispersion liquid, then adding an adhesive and a thickener to the graphene dispersion liquid, dispersing to obtain a homogeneous and stable graphene mixed slurry, uniformly coating the graphene mixed slurry on the surface of a heat dissipation component of the heat dissipation device, then drying, thus being capable of obtaininga uniformly coated graphene coating. According to the invention, the high heat conductivity graphene coating is directly coated on the surface of the heat dissipation component, and high in binding force with a substrate of the heat dissipation component, so that thermal conduction properties of the heat dissipation component can be obviously improved, furthermore, the waterproof adhesive and thehydrophilic thickener are used, therefore, the wettability of the graphene coating on water can be further enhanced to prevent condensate water from directly condensing into water drops on the surface of heat dissipation component so as to increase the heat exchange area.
Owner:SU ZHOU CSTAR MATERIAL TECH CO LTD

Viscous porous granulated ammonium nitrate fuel oil explosive and preparation method thereof

The invention discloses viscous porous granulated ammonium nitrate fuel oil explosive and a preparation method thereof. The ammonium nitrate fuel oil explosive comprises the following constituents in weight percent: 83 to 85 percent of porous granulated ammonium nitrate, 4.5 to 6 percent of compound oil phase, 3.5 to 6 percent of tackifier, 0.2 to 0.5 percent of expanded perlite, 1.3 to 2 percent of powder type explosive energy accelerant, and 3 to 5 percent of thickener. The method comprises the following steps: a, adding the porous granulated ammonium nitrate into a viscous porous granulated ammonium nitrate fuel oil explosive mixer, then adding the compound oil phase, stirring for 2 to 4 minutes at normal temperature, mixing the porous granulated ammonium nitrate and the compound oil phase to be uniform, so as to form mixture A; b, adding the tackifier, the powder type explosive energy accelerant and the expanded perlite into the mixture A, stirring for 1 to 2 munities at normal temperature, mixing the mixture A, the tackifier, the powder type explosive energy accelerant and the expanded perlite to be uniform, so as to form mixture B; and c, adding the thickener into the mixture B, stirring for 1 to 2 munities at normal temperature, and mixing the mixture B and the thickener to be uniform, so as to form the viscous porous granulated ammonium nitrate fuel oil explosive, and then packaging the viscous porous granulated ammonium nitrate fuel oil explosive. The viscous porous granulated ammonium nitrate fuel oil explosive and the method have the advantages that preparation and storage processes are safe and controllable, the power capability is high, the storage period is long, and the explosive is efficient and environmentally friendly.
Owner:肖代军 +2

Green alkali-free liquid concrete setting accelerator and preparation method thereof

The invention relates to a green alkali-free liquid concrete setting accelerator and a preparation method thereof, and belongs to the technical field of concrete processing. According to the method, aluminum sulphate, calcium hydroxide, organic acid and deionized water are taken and are charged into a three-opening flask; stirring is performed under the condition of constant-temperature water bath; setting accelerator mother liquid is obtained; sodium fluoroaluminate is taken and is added into the deionized water; heating and stirring are performed; then, organic alcohol amine is added; continuous stirring is performed; then, the setting accelerator mother liquid is dripped; after the dripping is completed, ethylene diamine tetraacetic acid is added; heat insulation stirring is performed;after the materials are cooled to the room temperature, stabilizing agents are added; stirring is performed; the green alkali-free liquid concrete setting accelerator is obtained. The setting accelerator provided by the invention has the advantages of no alkali, non-toxicity, no smell and no corrosion; the environment is protected in the construction process; almost no harm is caused on the body health of construction personnel and ecological environment in the spraying process; the production process is simple; the preparation is easy; the storage is easy; the stability in the storage processis high.
Owner:常州琨瑶纺织品有限公司

Glass wool ceiling board and preparation method thereof

The invention discloses a glass wool ceiling board. The glass wool ceiling board comprises a glass wool board layer, a glass fiber felt layer and a plaster coating material layer, wherein the glass wool board layer is prepared from centrifugal glass wool fibers with an environment-friendly resin binder, and the mass ratio of the centrifugal glass wool fibers, the environment-friendly resin binder and a plaster coating material is (85-93): (7-15): (2-3). A preparation method of the glass wool ceiling board comprises the steps of uniformly spraying the environment-friendly resin binder to the surfaces of the centrifugal glass wool fibers in an atomization state, carrying out wool collection by a wool collector, compressing and conveying collected wool into a curing oven for curing so as to obtain a glass wool board, then, carrying out glass fiber felt facing on the glass wool board, and carrying out compressed plaster coating material spraying according to different decorative patterns. Compared with the prior art, the glass wool ceiling board and the preparation method thereof have the advantages that glass wool ceiling boards of rich and diverse forms can be prepared according to customer requirements, and the ceiling board has heat preservation, heat insulation, sound absorption and fire prevention effects, does not fall dust, is free from formaldehyde release, is harmless to the health of users and is light in weight, so that the requirements on the load of a building can be lowered, and transporting and mounting are more convenient.
Owner:CHENGDU HANJIANG NEW BUILDING MATERIAL

Air conditioner disinfection control method and device

The embodiment of the invention relates to the technical field of air conditioner disinfection and provides an air conditioner disinfection control method and device. The air conditioner disinfectioncontrol method comprises the steps that a disinfection request is obtained, and by responding to the disinfection request, a closed space is controlled to be formed in an air conditioner; an ozone generating device is controlled to operate for the first predetermined time period and then stopped, so that the ozone concentration value of air in the closed space is increased not to be smaller than adisinfection concentration threshold value; an ozone reducing device is controlled to operate for the second predetermined time period and then stopped, so that the ozone concentration value of the air in the closed space is decreased not to be smaller larger than a healthy concentration threshold value; and when the ozone concentration value of the air in the closed space is not larger than thehealthy concentration threshold value, the closed space is controlled to be opened. Accordingly, on the one hand, the interior of the air condition is disinfected thoroughly through high-concentrationozone, and on the other hand, it is further guaranteed that health of human bodies is not endangered in the whole disinfection and sterilization processes of the air conditioner.
Owner:FOSHAN COMWIN LIGHT & ELECTRICITY

Oxygen feeding method and system of full-automatic oxygen feeding robot

The invention discloses an oxygen feeding method and system of a full-automatic oxygen feeding robot. The method includes: a patient wears wearable monitoring equipment so as to monitor the physiological features such as heartrate and blood pressure of the patient in real time, the monitoring data is transmitted to an upper computer for real-time analysis, the upper computer preliminarily positions a human body through a WIFI network when data abnormality is found after the analysis, and a moving wheel type traveling mechanism moves a WIFI positioning point according to the preliminary positioning information; a UWB base station is used to perform UWB positioning, and then ultrasonic sensor positioning is performed to obtain the approximate position of the human face; a mechanical arm delivers a camera and an oxygen mask to a position right in front of the approximate position of the human face, and a machine vision algorithm is utilized to identify real nostril positions; the distanceand dip angle between the oxygen mask and the real nostrils are calculated, the oxygen mask is accurately attached to the face through ultrasonic ranging, and then oxygen supply is performed. The oxygen feeding method and system has the advantages that human health conditions can be monitored in real time, and automatic oxygen feeding under emergency can be achieved.
Owner:贵州中医药大学

Environment-friendly type common cotton thread detonating cord

The invention discloses an environment-friendly type common cotton thread detonating cord, relating to the technical field of detonating cords. The environment-friendly type common cotton thread detonating cord comprises a core wire 1, a Taian powder core 2, a detonating cord body 3, a polypropylene flat filament layer 4, a cotton yarn layer 5, a water-proof environment-friendly coating layer 6, an external blasting fuse paper strip layer 7, an outer cotton yarn layer 8, and an outer coating layer 9; the detonating cord adopts the water-proof environment-friendly paint instead of pitch to serve as a moisture-proof coating layer, has good moisture-proof and water-proof properties, is non-toxic and odorless, does not need to be heated, cannot pollute air and environment, and cannot harm the body health of operators; the environment-friendly type common cotton thread detonating cord is innovatively improved based on the common cotton thread detonating cord production process, the environment-friendly type common cotton thread detonating cord is good for the civil explosive industry, the energy is saved, the air is purified, the environment is purified, the body health level of the operators in the civil explosive industry is improved, and the comprehensive economic benefit is remarkable; and the environment-friendly type common cotton thread detonating cord can be widely applied to all the detonating cord production enterprises.
Owner:HUBEI SHUAILI CHEM
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