33results about How to "Non-toxic material" patented technology

The invention discloses a near-infrared reflective transparent conductive film which is a multi-layer film consisting of a metal Cu layer and an AZO layer alternatively deposited on an underlay, and prepared by DC magnetron sputtering. The method is simple and easy to be operated, and is beneficial to industrialization. The prepared near-infrared reflective transparent conductive film has the characteristics of high conductance visible light and highly transparent infrared high reflection. Moreover, the concentration of electron carriers is above 6.0 x 10<21>cm<-3>; and the average transmittance of a visible light area is more than 70 percent and the average near-infrared reflective rate is more than 60 percent, which reaches the technical requirements of the near-infrared reflective films. The resistivity of the films is not higher than 3x10<-4> Omega.cm. The near-infrared reflective transparent conductive film has broad application prospect in shading type reflective structures and photoelectric devices.

Disclosed is a water treatment apparatus including a pipe. Elements disposed in the pipe are respectively made of lead-free brass and nontoxic ultra high molecular weight polyethylene instead of brass and plastic polyethylene that are conventionally used materials. Therefore, when the elements come into contact with water, neither heavy metals, such as lead (Pb), nor organic and inorganic substances harmful to the human body are produced.

The present invention describes a sheet 1 intended for retaining a granular material inserted or implanted in a human or animal body, said sheet 1: being made of a plastic deformable and non-toxic material chosen from the group consisting of a metal, metal alloy, a polymeric material or a non-woven fabric;comprising a matrix 2 and several holes 3, each hole 3 having a smallest dimension from one side of the hole 3 to another side of the hole 3, through a geometrical centre of the hole 3, of at least 50 μm and of maximum 2 mm;being stretchable in both a longitudinal 4 and transversal 5 direction of the sheet 1; andbeing 3D ductile.

A power supply includes a power converter configured to convert an input voltage to a target output DC voltage in response to a feedback signal, the feedback signal having a value. The power supply also includes a regulator coupled to the power converter and configured to generate an output power status signal, which maybe in one of two states depending whether an output current from the regulator is above or below a target current over a preset time duration. Further, a control circuit is coupled to the power converter and to the regulator and configured to increment or decrement the value of the feedback signal depending on the state of the power status signal.

The invention provides an overturn prevention bowl mat for infants. The overturn prevention bowl mat comprises a concave overturn prevention slope groove, an overturn prevention mat piece and a special bowl, wherein the overturn prevention mat piece is made of rubber capable of being sucked to a table top and can be designed to be rectangular, round and the like so as to be in contact with the table top to the utmost extent; the concave overturn prevention slope groove which is provided with a large upper opening and a small base is designed in the middle of the overturn prevention mat piece; the special bowl is in the same size as the groove; anti-slip textures are designed on the bottom surface of the overturn prevention bowl mat; and the concave overturn prevention slope groove and the overturn prevention mat piece adopt an integral design. The overturn prevention bowl mat for the infants has the advantages that when having a meal, a naturally active baby cannot overturn the bowl, so that the security of the baby is guaranteed; and the overturn prevention bowl mat is simple in process, non-toxic and safe in material, safe for use, easy to popularize, and therefore, relatively good in market prospect.

The invention relates to bedding, in particular to the improvement of a spring mattress. A venting type non-formaldehyde and mite-prevention spring mattress provided by the invention comprises spring cores, decoration sleeves wrapping the spring cores and a cotton-cocoon-shaped polyester fibre cushion laid between the spring cores and the decoration sleeves, wherein the cotton-cocoon-shaped polyester fibre cushion is provided with a plurality of venting holes, and the cross section area of each venting hole is about 3-260 square millimeters. The venting type non-formaldehyde and mite-prevention spring mattress disclosed by the invention has the characteristics of no formaldehyde, good air permeability, mite and bacterial prevention property, and difficulty in deformation and cracking, two faces of the spring mattress are different in softness, and the spring mattress is particularly suitable for being used by consumers with different ages and constitutions in different seasons.

The invention relates to a production method of triethylamine method cold core box resin suitable for high humidity environment, and specially relates to a production method of triethylamine method cold core box resin for casting; the method is as follows: first, synthesizing separately a component I and a component II, and then mixing the components I and the component II; the components I comprises the following raw materials by weight: 42%-65% of benzylic ether phenolic resin, 16.2%-25% of an aromatic solvent, 6%-12% of a citrate plasticizer, 12%-24% of a fatty acid dibasic acid ester plasticizer and 0.4%-0.8% of a silane coupling agent; the components II comprises the following raw materials by weight: 72.5% of polyaryl polymethylene isocyanate (PAPI), 27% of synthetic plant ester and 0.5% of a phosphate ester inhibitor. The method is unique, good in moisture resistant performance and high in environmental protection performance, can improve casting production conditions, achieves ''green casting'', and improves the surface quality and dimension accuracy of castings.

The invention discloses a gum-protecting device which is an integrated shell structure. The inner surface of the shell is matched with the half of the longitudinal section of a tooth drill body. The shell of the gum-protecting device is devised into a machine needle base connector, a body connector, a gum-protecting part and a positioning part. The gum-protecting part of the gum-protecting deviceis matched with the machine needle on the tooth drill; the inner diameter of the gum-protecting part is larger than the diameter of the machine needle; and a gap is remained at the fixed socket part of the machine needle of the tooth drill. The front end of the gum-protecting part is provided with a positioning part which is extruded out of the length of the front end of the machine needle; the machine needle base connector of the um-protecting device is covered at the external surface of the machine needle base of the tooth drill; the body connector of the um-protecting device is covered at the external surface of a handle of the tooth drill; the machine needle base connector and the body connector are tightly matched with the tooth drill body, so that the gum-protecting device can be stably fixed at the external surface of the tooth drill. The gum-protecting device has the positioning function in the process of polishing tooth shoulder, and effectively separates the machine needle from the gum to protect the gum.

The invention discloses a material for producing handicrafts. The material comprises the following components by weight parts: 10-15 parts of paraffin, 20-35 parts of calcium carbonate, 20-50 parts of polyethylene, 0-15 parts of pigment powder, and 0-2 parts of rosin, wherein the polyethylene is high-density polyethylene, low-density polyethylene or linear low-density polyethylene. A preparation method of the material for producing the handicrafts comprises heating 10-15 parts of the paraffin to 50-65 DEG C for dissolving, adding 20-50 parts of the polyethylene to mix, heating to 110-220 DEG C for dissolving, adding 20-35 parts of the calcium carbonate to mix, adding 0-15 parts of the pigment powder and 0-2 parts of the rosin under a temperature of 200-220 DEG C, dissolving and uniformly stirring to obtain the finish product. The method uses the paraffin, the calcium carbonate and the polyethylene as main raw materials; and the finish product has advantages of high hardness, good toughness, high resistance intensity, light weight and low cost, and the preparation technology is simple and low in thermoplastic temperature.

An alarm cable with rat resistance and moisture resistance functions comprises copper conductors (1), crosslinked polyethylene jackets (2), an aluminum-plastic composite strip (3), a fire strip (4), an earth wire (5) and a halogen-free jacket (6), wherein each copper conductor (1) is covered with one crosslinked polyethylene jacket (2) to form an insulated cable core, the cable is covered with the aluminum-plastic composite strip (3) after the insulated cable cores form the cable, and the fire strip (4) is additionally arranged on an outer circle of the aluminum-plastic composite strip (3) and is covered with the halogen-free jacket (6). The alarm cable is characterized in that the earth wire (5) is further arranged between the fire strip (4) and the halogen-free jacket (6). The alarm cable has the functions of termite and rat resistance, non-toxic property, environmental protection, moisture resistance, oil resistance and corrosion resistance, spontaneous combustion of the cable or continued combustion when the cable meets open fire can be effectively prevented, and few hazardous substances and little toxic gas are generated.

The invention discloses a breathable, comfortable and cool-feeling mask and a preparation method thereof. The mask is divided into three-layer structures, namely, an outer layer of PE / PP skin-core structure bicomponent spunbond nonwoven fabric, and a middle layer of polypropylene melt-blown nonwoven fabric. The inner layer is a cool-feeling PE / PP skin-core structure bi-component spunbond non-woven fabric, by adding cool-feeling functional materials during the processing of the inner layer PE / PP skin-core structure bi-component spunbond non-woven fabric, It makes the mask feel comfortable and cool when it is in contact with the skin, and the use of PP and PE in the three-layer structure of the mask gives the mask a very high infrared transmittance, which can make the thermal radiation of the human face radiate in time. The mask of the invention has the characteristics of breathability, comfort, cool feeling and the like, and the preparation method is simple in process, has good cooling effect, is convenient for promotion and use, and improves the uncomfortable experience of wearing the mask in summer, such as stuffy heat and sweating.

The invention discloses a built-in breather valve and an air filtering mask of a fan. The built-in breather valve and the air filtering mask of the fan are characterized in that a built-in filter screen is made of high-class static fiber filter material matched with activated carbon and effectively prevents dust, various gases and oily particles from being involved therein, especially the air inlet volume of the built-in fan is increased, the problem of wind resistance of a filtering device is effectively solved, the air flowing speed in the mask is improved, and breathing pressure of a human body is reduced. An inspiration one-way valve piece can prevent powerful wind from being straightly blown towards the face of the human body and enables inflowing wind to be soft. The inspiration one-way valve piece can exhaust waste gas, and outside pollutants is prevented from entering the valve while stuffiness feeling in the mask is relieved.

The invention provides a device and a method for controlling follicle development of equine animals and preventing and treating reproductive tract inflammation. The device is composed of a nylon bracket and a slow-release device. The slow-release device is fixedly installed on the nylon bracket. The nylon bracket includes: a connecting part and two long arms, and the two long arms are connected to the connecting part respectively, and the two long arms are connected to the connecting part respectively. A certain angle is formed between two long arms, and the long arm is composed of a cylinder and a top sphere, the top of the cylinder is provided with a top sphere, and the bottom of the cylinder is connected with the connecting part, and the slow release device includes two circles Each cylinder is provided with a number of small holes and disc structures arranged in an orderly manner. The small holes are set between the two disc structures. The top of the cylinder is a hollow round cap. The cylinder is covered with a long On the arm, the hollow round cap matches the top sphere, so that the cylinder is fixed on the long arm, and the disc structure is perpendicular to the extension direction of the long arm.

A controller for controlling a plurality of serially-connected LED strings includes a reference voltage generator configured to generate a plurality of reference voltages. The reference voltage generator is further configured to vary the plurality of reference voltages based on a sampled voltage signal. The sampled voltage signal can include one or both of a peak voltage of the rectified input AC voltage and a peak voltage of an LED diode forward voltage Vf. The controller further includes a plurality of linear regulators, each linear regulator coupled between a cathode of a corresponding LED string and a common current sense node, and each linear regulator is configured to regulate a current through a corresponding LED string according to a corresponding reference voltage.

The invention relates to the technical field of waterproof coatings, and concretely relates to a special waterproof coating for roads and bridges, and a preparation method thereof. The special waterproof coating for roads and bridges is least prepared from 20-30 wt% of neoprene latex, 10-20 wt% of styrene-butadiene latex, 40-60 wt% of asphalt, 0-10 wt% of water and 0.5-5 wt% of auxiliary agents. The waterproof coating has wide temperature adaptability and strong construction operability, i.e., the waterproof coating does not flow at a high temperature of 140-180 DEG C and does not crack underthe action of a dynamic load at a low temperature of -20 to -30 DEG C. The waterproof coating has the advantages of high curing and film-forming speed, good film-forming toughness, high binding power,high shearing strength, high mechanization and automation degree, nontoxic materials and no environmental pollution.

The invention discloses a manufacturing method of a frieze combined needle-punched formable carpet. The method includes the following steps: A, opening, mixing, carding and lapping fibrous materials according to a preset proportion to form a uniform fiber web, forming carpet surface layer grey cloth by bonding via a pre-needling process, and then performing needled friezing on one side of the carpet surface layer grey cloth via a main needling process by taking a used support mesh plate as a brush which is made of a plurality of bristles with the diameter of 0.20-0.30mm and with the pore diameter of gaps formed between the bristles of 0.10-0.15mm; B, opening, mixing, carding and lapping fibrous materials according to a preset proportion to form a uniform fiber web, forming a carpet bottom layer by bonding via the pre-needling process, and combining the carpet surface layer in the step A and the carpet bottom layer in the step B to obtain the combined needle-punched carpet; D, rolling up, stentering and baking the combined needle-punched carpet in the step C to obtain the frieze combined needle-punched formable carpet.

The invention discloses an azo dye adsorbent and application thereof. The azo dye adsorbent is a novel nanoscale coordination polymer material which is synthesized by FeCl3 and 1, 3, 5-trimesic acid using a solvothermal method. The novel nanoscale coordination polymer material is used for treatment of azo dye waste water. The azo dye adsorbent has the beneficial effect of adopting a simple preparation method, being high in material purity, rapid and fast in adsorption, wide in application scope, free from residue and toxic and side effects, and is expected to be widely used in the field of environment engineering.

The invention relates to the field of electrochemical electrode preparation, and in particular to a preparation method and application of a PDMS-based (polydimethylsiloxane-based) flexible Ag / AgCl microelectrode capable of being repetitively used. The invention adopts flexible PDMS as an electrode substrate material, the electrode substrate material undergoes surface hydrophilic modification, a silver nanowire is then evenly applied, and the electrode substrate material is then immersed in an NaClO solution and oxidized, so that the Ag / AgCl microelectrode is prepared. When adopted as a reference electrode, the Ag / AgCl microelectrode disclosed by the invention shows good working stability and sensitivity, moreover, the working potential is lower than working potentials of conventional electrodes, and the Ag / AgCl microelectrode can continuously work for one hour or longer. The electrode disclosed by the invention can be repetitively used, the material is poison-less and high in biocompatibility, and can be widely applied in microchannel systems, and the electrode can be developed into a biosensor.