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 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 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 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 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 discloses a method for producing N,N'-dimethyl cyclohexanediamine, which comprises the following steps of: reacting cyclohexanediamine with aryl benzene sulfonyl chloride to protect the nitrogenous base; implementing a methylation by a methylating reagent; and removing aryl benzenesulfonyl by hydrolysis of sulfuric acid, to obtain the target product N,N'-dimethyl cyclohexanediamine. The method for producing N,N'-dimethyl cyclohexanediamine disclosed by the invention is simple in process, low in raw material cost, toxic-free in production process and high in product purity to be greater than 98%.

A processing method of nano-bacterial cellulose superfine fiber yarn provides a scientific basis for the in-depth study of bacterial cellulose cellulose materials; the bacterial cellulose wet film is used as the base material, and the bacteria are punctured, cut and combed at high speed The cellulose wet film is turned into bacterial cellulose fiber; the obtained bacterial cellulose fiber is formed into slivers by a carding machine, and after the sliver is formed, it is processed and spun into nano-bacterial cellulose superfine fiber yarn by spinning technology. The present invention provides feasibility for the further deep processing of bacterial cellulose cellulose materials; lays a foundation for realizing large-scale industrial production of bacterial cellulose cellulose materials; theoretical and practical guarantees. The bacterial cellulose yarn processing method provided by the invention has clean production environment, no toxicity, simple and economical production method, high production and processing efficiency, wide application fields of the produced bacterial cellulose yarn, environmental protection, low cost and high economic efficiency.

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 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 relates to an enzymatically degradable polypeptide-based polyester ammonia and its preparation method and application, comprising: (1) mixing a polypeptide, an acid anhydride, an alcohol amine small molecule protected by di-tert-butyl dicarbonate anhydride, an activator and a catalyst reaction to obtain polypeptide-based diamine; (2) p-nitrophenol, diacid chloride and catalyst mixed reaction to obtain p-dinitrobenzene active ester; (3) polypeptide-based diamine and p-dinitrobenzene active ester Solution polymerization to obtain enzymatically degradable polypeptide-based polyester ammonia, which is used in the field of wound antibacterial, bacterial biofilm inhibition or wound repair biomedicine. The production process is safe, non-toxic and low in cost.

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 fiber concrete material for 3D (three-dimensional) printing and a preparation method of the fiber concrete material. The fiber concrete material comprises, by weight, 7.8-8.4parts of cement, 4.0-6.7 parts of mineral powder, 1.3-1.7 parts of silicon ash, 4.7-7.7 parts of quartz sand, 2.3-2.9 parts of water, 0.2-0.39 part of water reducing agent, 0.0065-0.0168 part of retarders, 0-0.004 part of thixotropic agents and 0.1-0.2 part of fibers. The fiber concrete material has suitable initial setting time and final setting time, high compressive strength, bending strengthand toughness, good workability and thixotropy, layers can be effectively cohered, deformation and collapse are avoided in the stacking process, condensation and thixotropic properties of the fiber concrete material can be accurately designed according to engineering requirements, and different printing speed and structure construction requirements can be met.

A nanometer bacterial cellulose ultrafine fiber processing device comprises a pair of rollers (2) which are used for holding a bacterial cellulose wet film, wherein a licker-in roller (3) is arranged behind the rollers (2), a fiber separation device (4) is arranged on one side of the licker-in roller, and a strip circling device (5) is arranged behind the fiber separation device. By means of the processing device for physical refining of bacterial celluloses, the bacterial cellulose wet film is processed to be in an ultra thin and ultra long fiber state, and then processed through the spinning technology to manufacture nanometer bacterial cellulose ultrafine fiber yarn in a spinning mode. When the nanometer bacterial cellulose ultrafine fiber processing device is used for processing, the production process is non-toxic, the processing device is clean, simple, economical and high in efficiency, and fibers obtained through the processing device are wide in application field.