36results about How to "The production process is non-toxic" patented technology

The invention discloses polyurethane for a television background wall, as well as a preparation method of polyurethane, belonging to the field of building decoration engineering and particularly relating to a wall surface covering for surface protection. The polyurethane for the television background wall is prepared from the following components in parts by weight: 60-80 parts of polyether polyol, 40-20 parts of polymer polyol, 1.5-3.5 parts of water, 0.5-1.0 part of foam stabilizer, 0.5-3 parts of hole opening agents, 0.11-0.88 part of a catalyst, 1-2 parts of cross-linking agents and 35-40 parts of polymethylene polyphenyl polyisocyanate. The prepared polyurethane is non-toxic, healthy, environmental friendly and low in cost.

The invention relates to a halogen-free combustion-proof polypropylene high-speed abrasion-proof insulating material for auto initial line, wherein the invention is characterized in that the constituents include base resin a and b comprising ethene-propene copolymer, modified resin c including ethane-1-octene copolymer, capacity-adding resin d including the polar monomer grafts of ethane-1-octene copolymer, combustion inhibitor e, expansion combustion inhibitor, composite anti-oxidant f, metal deactivator g, outer lubricating agent h, outer lubricating agent i, lubricating agent j, brightening lubricant k. The process for preparation comprises blending and squeezing with a double screw rod extrusion machine, then squeezing and coating the obtained composition into isolated wires.

The invention belongs to the technical field of medicines, and particularly relates to a hydrogel antipyretic patch and a preparation process thereof. The hydrogel antipyretic patch provided by the invention is made by using NP-700 as a hydrophilic polymer and then being supplemented with a gel polymer, a gel rate control agent, a preservative, a moisturizer, a pH (potential of Hydrogen) control agent, a thickener and a cooling compound; the hydrogel antipyretic patch is safe in component and quick in antipyretic speed, has no pungent smell, has a light aroma, and is high in use comfort degree; nerol added into the hydrogel antipyretic patch can be closely combined with a high-molecular skeleton due to a unique molecular structure, and is used for dispersing the adsorptive power, to a water molecule, of a high molecule; at a certain temperature, the permeability of hydrogel is ameliorated; the vaporized water molecule can be quickly diffused; the effect of quickly lowering a temperature is achieved; in addition; the fresh smell of the nerol can be also used for promoting the use feeling of the antipyretic patch; the process for preparing the hydrogel antipyretic patch, which is provided by the invention, is simple; the cost is low; the making procedure is nontoxic and pollution-free.

The invention discloses a dyeing method of an environment-friendly wood veneer dyeing agent, and relates to a dyeing method of a wood veneer dyeing agent. The invention mainly solves the problems that an exiting dye is large in water solubility and high in leachability, dyed color is unstable, and an existing dyeing method is complex in process and high in equipment demand to cause environmental pollution and is not suitable for large-scale production. The dyeing method disclosed by the invention comprises the following steps of: first bleaching a veneer by means of characteristic of non-toxicity of CH3COOOH; and then, with the bleached veneer as a base material, dyeing the base material by two pigments, namely, iron oxide red and iron oxide yellow. According to the method disclosed by the invention, the dyed veneer is bright and full in color, high in water fastness of pigments, strong in hydrophobicity and extremely less in damage to wood. The dyeing method is low in equipment demand, easy to operate and strong in controllability, is suitable for large-scale industrial production, and has an extremely good actual application prospect.

The invention discloses a solvent composition and a preparation method and the application thereof. The water solvent is formed by a quaternary system containing lithium hydroxide, sodium hydroxide, thiourea and water , and has highest solvent power when the temperature is ranged from 15 DEG C below zero to 5 DEG C. The invention also discloses a method for fast dissolving cellulose by utilizing the water solvent and preparing regenerated cellulose membranes, fibers, porous materials and carbon materials with good properties. The water solvent system has the characteristics of high solvent power on the cellulose, stable obtained cellulose solution, good product property, no toxicum or pollution in the production process and low production cost, and overcomes the defect existing in the prior art, thereby having outstanding superiority.

The invention discloses a nonmetal electrode material of a vanadium redox battery and a preparation method thereof. The nonmetal electrode material comprises the following raw materials in a prescription: 10-30% of high-density polyethylene, 20-40% of low-density polyethylene, 1-3% of a mixture of calcium stearate and zinc stearate, 20-40% of electroconductive carbon black, 10-30% of graphite, 8-12% of ethylene-octylene copolymer, 2-5% of sodium alkylarysulfonate, 2-5% of polyoxyethylene fatty alcohol ether and 1-3% of stearic acid. A preparation process comprises the step of uniform mixing and milling to prepare the electrode material. The nonmetal electrode material disclosed by the invention has the advantages of compacter material structure, no falling-off, no pollution to electrolyte, good machine-shaping performance, breakdown difficulty, long service life, easily obtainable raw materials, low price, simple preparation method, no toxicity, no pollution, and suitability to mass popularization and application.

The invention relates to a halogen-free heat-resistant weather-resistant polypropylene nano composite insulating material for an automobile wire and a preparation method thereof. The composite insulating material is prepared from 50-60 parts of polypropylene nano compounds and 50-60 parts of halogen-free flame-retardant master batches. The polypropylene nano compounds are prepared from, by weight, 100 parts of polypropylene, 10-15 parts of polypropylene polar monomer grafts, 4.0-8.0 parts of nano inorganic compounds and the like. The halogen-free flame-retardant master batches are prepared from, by weight, 100 parts of organic hydroxide, 20-30 parts of carrier resin and the like. By the adoption of the binary technology, the polypropylene nano compounds and the halogen-free flame-retardant master batches high in flame-retardant agent content are prepared, the polypropylene nano compounds and the halogen-free flame-retardant master batches are mixed, extruded and granulated through a double-screw extruding machine, and the nano composite insulating material is obtained. The material is low in cost and environmentally friendly, integrates excellent physical and mechanical performance and electric performance and good extruding processability, is suitable for insulating processing of the automobile original wire, and can be used for insulating wrapping of communication cables, logging cables and oil-submerged pump cables.

The invention relates to a novel method for improving hydrophobicity of wood. The novel method comprises the following steps: 1. mixing ammonia water, ethanol and tetraethoxysilane, heating and magnetically stirring to obtain a transparent silica sol; 2. mixing triethoxyvinylsilane with the silica sol and magnetically stirring to obtain a composite wood modifier; 3. placing a wood substrate in a reaction tank, sealing and vacuumizing, and keeping negative pressure for 20min to 30min; 4. under the vacuum condition, injecting the composite wood modifier into the reaction tank, and vacuum-impregnating the wood while applying ultrasonic treatment for 2h to 2.5h; 5. releasing the vacuum degree and ultrasonic treatment, taking the wood and draining the composite wood modifier, drying in the air,and performing gradient heating and drying in an oven to obtain the novel hydrophobic wood. The wood prepared by the method of the invention achieves better hydrophobicity on the surface and inside.Meanwhile, the method provide by the invention has the advantages of low equipment requirements, simple process and strong controllability, non-toxic and environment friendly production process, and large-scale production.

The invention relates to enzymatic degradation type polypeptide-based polyester ammonia and a preparation method and application thereof. The preparation method includes: (1) subjecting polypeptides,anhydrides, di-tert-butyl dicarbonate anhydride protected alcohol amine micromolecules, an activating agent and a catalyst to mixed reaction to obtain polypeptide-based diamine; (2) subjecting p-nitrophenol, acyl chloride and a catalyst to mixed reaction to obtain paradinitrobenzene active ester; (3) subjecting polypeptide-based diamine and paradinitrobenzene active ester to solution polymerization to obtain the enzymatic degradation type polypeptide-based polyester ammonia applied to the biomedical field of wound antibacterial and bacteriostatic biofilms or wound repair. A production processis safe, nontoxic and low in cost.

The invention provides a halogen-free flame-retardant polyolefin cable material for an automobile and a preparation method thereof. The halogen-free flame-retardant polyolefin cable material for the automobile comprises the following preparation raw materials in parts by weight: 15-50 parts of an ethylene-vinyl acetate copolymer, 5-15 parts of an ethylene-octylene copolymer, 18-22 parts of a linear low density polyethylene resin, 10-15 parts of a silane grafted ethylene-octylene copolymer, 5-15 parts of a compatilizer, 60-160 parts of a halogen-free flame retardant, 1-10 parts of a flame retardant synergist, 1-3 parts of an assistant cross-linking agent, 0.5-2 parts of a composite antioxidant, 0.5-2 parts of a metal deactivator, 0.5-1 part of a stabilizer, 1-3 parts of a special filler, and 1.5-6 parts of a lubricant. The halogen-free flame-retardant polyolefin cable material for the automobile is excellent in mechanical property and electrical property, can resist high temperature of 150 DEG C, can resist thermal aging for 3000 hours, and is halogen-free, flame-retardant, green and environment-friendly.

The invention discloses a preparation method of a lithium battery diaphragm material and belongs to the field of synthesis of battery materials. The preparation method disclosed by the invention comprises the following steps: firstly mildewing on the surfaces of cotton linters by utilizing rich microorganisms in a liquid supernatant in a biogas tank to initially activate and defibrillate cotton fibers, and sterilizing and de-coloring by using hydrogen peroxide; then adding sodium dodecyl benzene sulfonate serving as a surface active agent into a sodium hydroxide solution to promote the defibrillation of the cotton linter fibers in the cooking process, removing impurities in raw materials to purify celluloses, and preliminarily hydrolyzing through the celluloses and pulping to keep close and uniform among the fibers; finally, polymerizing a layer of dopamine on the surfaces of the fibers to form a dense porous structure among the fibers and improve the mechanical strength of a diaphragm, reducing the looseness among the fibers through ultra-fine grinding and obtaining the lithium battery diaphragm material through sheet making and hot pressing. The lithium battery diaphragm material obtained by the preparation method disclosed by the invention is good in mechanical strength, a large amount of organic solvents are not needed in the preparation process, the obtained material is durable, the service life of the lithium battery diaphragm material is prolonged by 2 times or above compared with that of a conventional diaphragm, and the safety is greatly improved.

The invention discloses fruit and vegetable preservative paper containing compound enzymes and a preparation method thereof. The preparation method comprises the following preparation steps: preparing a glucose oxidase solution, a catalase solution, a glucose solution and oxidation starch adhesive liquid, and uniformly mixing and stirring the solutions under the anaerobic operating conditions at the temperature of 45-55 DEG C according to a certain mass ratio; uniformly applying the prepared mixed solution on one side of the paper, adhering one side of two pieces of paper applied with the mixed solution together, and forming the preservative paper, namely the fruit and vegetable preservative paper containing compound enzymes. The invention provides a green, safe and non-toxic preparation method, and the prepared fruit and vegetable preservative paper has antioxidant and antibacterial properties and excellent application prospects.

The invention relates to a polypeptide-based polyester ammonia nano particle and its preparation and application. It is formed by degrading and assembling enzyme-degradable polypeptide-based polyester ammonia as a raw material under the action of enzymes. The preparation method comprises: dissolving enzymatically degradable polypeptide-based polyester ammonia in an organic solvent to obtain a polyester ammonia solution with a mass fraction of 5-35%, removing the solvent to form a film, The enzyme PBS solution was degraded in a water-bath shaker to obtain nanoparticles. The production process is safe, non-toxic and low in cost. The nanoparticle has a stable shape, uniform particle size distribution, excellent biocompatibility, and can be preloaded with drugs, and is widely used in biomedical fields such as wound antibacterial, bacterial biofilm inhibition, and wound repair.

A method for physically refining nano-bacterial cellulose microfiber includes taking a wet bacterial cellulose film as a matrix material, making the wet bacterial cellulose film into bacterial cellulose fibers via high-speed puncturing, slitting and carding, and subjecting the obtained bacterial cellulose fibers to filter pressing via a filter press to prepare cellulose microfibers with certain moisture content, diameter and length. The method has the advantages that the cellulose microfibers are long, good in fineness and non-toxic, a processing method is clean, simple, economical and high in efficiency, and processed fibers are wide in application fields.

The invention discloses feed for conditioning an intestinal tract of a Boer goat and a preparation method thereof. The feed is prepared from the following raw materials in parts by weight: 500 to 600 parts of black locust leaf, 2 to 3 parts of calcium chloride, 25 to 27 parts of water bamboo shoot, 34 to 38 parts of pawpaw, 2 to 3 parts of xanthan gum powder, 5 to 7 parts of wild jujube powder, 34 to 36 parts of sorghum meal, 21 to 24 parts of secondary rice flour, 7 to 8 parts of zanthoxylum bungeanum water, 23 to 26 parts of jasmine petal powder, 45 to 47 parts of corn bran, 24 to 26 parts of cauliflower residue, 10 to 12 parts of garlic sprout, 4 to 5 parts of caviar, 54 to 57 parts of grass seed powder, 23 to 36 parts of shellfish meat powder, 0.4 to 0.6 part of active lactic acid bacteria, 32 to 35 parts of turnip peel, 13 to 15 parts of apple dietary fiber and 23 to 25 parts of expanded rice bran. The feed for conditioning the intestinal tract of the Boer goat has the effects of removing food retention, relieving stagnation, adjusting the micro-ecology of the intestinal tract, conditioning flora in the intestinal tract and reducing the generation of a disease of the intestinal tract; a toxin in the body of a sheep can be removed; the body health of the sheep is promoted; the immune competence of the sheep is enhanced.

The invention provides a device and a method for refining crude lignite wax. The device for refining the crude lignite wax comprises a refining reaction kettle, wherein one or more layers of sand coreplates are arranged in the refining reaction kettle, and a feeding port of the refining reaction kettle is formed in the bottom. The method for refining the crude lignite wax comprises the step of contacting a crude lignite wax raw material with ozone to obtain the refined lignite wax. According to the method, the production process is non-toxic, the wastewater discharge amount is greatly reduced, and the product refined wax whiteness is high.

The invention discloses a carbon nanotube / fiber concrete for 3D printing and a preparation method thereof. The carbon nanotube / fiber concrete is composed of following raw materials in parts by weight:6.8 to 8.6 parts of cement, 3.0 to 6.7 parts of mineral powder, 1.3 to 2.7 parts of silica fume, 4.7 to 13.8 parts of quartz sand, 2.0 to 4.1 parts of water, 0.2 to 0.5 part of water reducer, 0 to 0.03 part of retarder, 0 to 0.004 part of thixotropic agent, 0.05 to 0.25 part of fibers, 0.0008 to 0.008 part of carbon nanotube, and 0.003 to 0.16 part of dispersant. The provided carbon nanotube / fiber concrete has the advantages of proper initial setting time, proper final setting time, high compression strength, high bending strength, good toughness, good workability, and excellent thixotropic property; layers can be effectively bonded, during the stacking process, deformation and collapse are avoided; the setting and thixotropic properties of the concrete can be precisely designed accordingto the needs of engineering; and different needs such as printing speed, structures, and the like, can be satisfied.

The invention discloses a sensor for simultaneously measuring bending strain and pressure. The sensor comprises a first support layer, a metal thin film layer, a dielectric layer, a second support layer and an electrode layer which are sequentially arranged from bottom to top; The metal thin film layer is embedded between the first supporting layer and the dielectric layer for inducing bending strain, and the electrode layer is arranged parallel to the metal thin film layer for forming a capacitor with the metal thin film layer pressure sensor. The sensor according to the invention can simultaneously detect pressure and bending strain, and its manufacturing process is non-toxic and does not require a mask, thereby saving costs.

The invention discloses an underwater high polymer adhesive and a preparation method thereof. The adhesive is composed of a component A and a component B in a mass ratio of 3:1. The component A comprises, by weight: epoxy resin E44; polysulfide rubber JLY-121; ethanol; acetone; butyl glycidyl ether; and furfural. The component B comprises, by weight: dibutyl phthalate; 2, 4, 6, tris(dimethylaminomethyl)phenol; and modified ketimine. The underwater high polymer adhesive provided by the invention has the characteristics of no toxicity, low cost, high performance, high strength, and curing in water, etc., thus being a product in urgent need during waterproof and plugging construction of subway, tunnels and underground projects with water. The preparation method of the underwater high polymer adhesive provided by the invention is simple, and the production process is non-toxic.

The invention discloses a sensor for simultaneously measuring bending strain and pressure. The sensor comprises a first support layer, a metal film layer, a dielectric layer, a second support layer and an electrode layer, all of which are sequentially arranged from bottom to top. The metal film layer is embedded between the first supporting layer and the dielectric layer and used for sensing bending strain, and the electrode layer and the metal film layer are arranged in parallel and used for forming a capacitive pressure sensor together with the metal film layer. The sensor can detect pressure and bending strain at the same time, the manufacturing process is non-toxic, a mask is not needed, and the cost is saved.

The invention provides a device and method for refining crude montan wax. The device for refining crude montan wax provided by the present invention comprises a refining reactor, the inside of which is provided with one or more layers of sand core boards, and the feed port of the refining reactor is arranged at the bottom. The method for refining the crude montan wax of the present invention comprises contacting the raw material of the crude montan wax with ozone to obtain refined montan wax. The production process of the method is non-toxic, the discharge of waste water is greatly reduced, and the product has high whiteness of refined wax.

The invention discloses polyurethane for a television background wall, as well as a preparation method of polyurethane, belonging to the field of building decoration engineering and particularly relating to a wall surface covering for surface protection. The polyurethane for the television background wall is prepared from the following components in parts by weight: 60-80 parts of polyether polyol, 40-20 parts of polymer polyol, 1.5-3.5 parts of water, 0.5-1.0 part of foam stabilizer, 0.5-3 parts of hole opening agents, 0.11-0.88 part of a catalyst, 1-2 parts of cross-linking agents and 35-40 parts of polymethylene polyphenyl polyisocyanate. The prepared polyurethane is non-toxic, healthy, environmental friendly and low in cost.

The invention discloses a nanometer bacterial cellulose ultrafine fiber processing method. A bacterial cellulose wet film is used as a base raw material. After being subjected to high-speed puncture, separation through cutting, and carding, the bacterial cellulose wet film is changed into bacterial cellulose fibers. The obtained bacterial cellulose fibers are placed in a grinding machine for being ground to form bacterial cellulose ultrafine fibers. The bacterial cellulose ultrafine fibers are subjected to filter pressing processing in a filter press, and then the ultrafine cellulose ultrafine fibers with certain moisture content, certain diameters and certain lengths are prepared. The nanometer bacterial cellulose ultrafine fiber processing method has the advantages that the ultrafine cellulose ultrafine fibers are long, thin and non-toxic, the processing method is clean, simple, economical and high in efficiency, the fibers obtained through the processing method are wide in application field, the obtained ground solution can be used repeatedly, and the concept of recycling economy is met.

The invention discloses a flexible electrode based on polyvinyl alcohol and a preparation method of the flexible electrode. The flexible electrode is obtained by pouring and drying slurry, soaking in an acid solution for providing protons, washing with water and cutting, wherein the slurry is composed of polyvinyl alcohol, a conductive carbon material, an active substance and water. The flexible electrode disclosed by the invention is soft, curlable, foldable, elastic, capable of tolerating a certain degree of friction, has the performance of a supercapacitor, can charge and discharge charges, can increase the proportion of active substances according to needs, has large capacitance, can sense the change of the charges, and is very suitable for wearable equipment based on the flexible electrode.