515results about How to "Achieve antibacterial effect" patented technology

The invention discloses an anti-ultraviolet nanofiber yarn and a preparation method thereof. The anti-ultraviolet nanofiber yarn is a nanofiber-wrapped yarn structure, including a core and a skin layer completely and uniformly covering the outer surface of the core. The core is filament yarn or short fiber yarn, the cortex is electrospun nanofiber, and ultraviolet shielding agent or ultraviolet absorber is evenly distributed inside the electrospun nanofiber. The preparation method is a one-time forming method by electrospinning. During the electrostatic spinning, a nanofiber yarn machine is used for one-time forming production process. Under the coupling action of positive and negative electric fields, the surface of the yarn is directly coated with anti-ultraviolet nanofibers. The anti-ultraviolet nanofiber yarn of the present invention can achieve the comprehensive effect of anti-ultraviolet, antibacterial and antibacterial, and hydrophilic and comfortable, has good heat resistance and strong washability, and can be formed in one time during the production process, which can effectively save cost and energy.

The invention relates to fibers, in particular to tourmaline-containing sheath-core composite fibers. The tourmaline-containing sheath-core composite fibers are prepared through the following steps: (1) tourmaline processing; (2) core layer material processing, that is, bast fibers and palm fibers after degumming processing are combed and cut into short bast fibers and short palm fibers, the short bast fibers and the short palm fibers are then soaked in a mixed manner in a lignocellulose aerogel solution for 15 to 20 minutes according to a formula, the short bast fibers and the short palm fibers after the mixed soaking are then taken out for draining, the short bast fibers and the short palm fibers after the draining are sent to an opener for opening and mixing, the short bast fibers and the short palm fibers after the opening and mixing pass through airflows and are arranged through a roller groove to form meshed semi-products with S-shaped section structures, and the meshed semi-products go through spunlace to form non-woven needled bast-palm fiber aerogel core layer materials; (3) sheath layer material processing, that is, a first pulp is prepared from processed tourmalines and ethylene glycol, phthalic acid and glycerol are used for esterification reaction, the first pulp, magnesium oxide and calcium hydroxide are added after the reaction for condensation polymerization, and polyester chip sheath layer materials are obtained through strip casting and sized dicing; (4) composite melt spinning for obtaining of the tourmaline-containing sheath-core composite fibers. The tourmaline-containing sheath-core composite fibers provided by the invention achieve the antibacterial and healthcare effects, high degree of comfort, as well as environment friendliness.

One kind of porous bacteriostatic polyelectrolyte material suitable for stopping bleeding and dressing wound is disclosed. The material features that it is prepared with chitosan solution in 1-5 wt% concentration and sodium alginate solution 1-5 wt% concentration in the weight ratio of 0.25-4 as material and through mixing and freeze drying. The chitosan solution is prepared through dissolving chitosan in water solution of acetic acid. The material includes also sulfadizine silver or PVP-iodine bacteriostatic agent in the amount of 3-10 wt% of chitosan and sodium alginate. The porous material has no toxicity, relatively great pores, high water absorption rate and short bleeding stopping period.

A multilayered mask that while securing satisfactory breathability for wearers, prevents the penetration of bacteria and viruses into the wearers' bronchi and exhibits excellent antibacterial / antiviral properties. The multilayered mask comprises a rectangular mask main body to be worn so as to cover the nose and mouth parts of a wearer, the mask main body having a thin four-layered structure consisting of a laminate of outermost layer of spun bonded nonwoven fabric capable of adsorbing atmospheric flotage, etc., first intermediate layer of electrostatically charged melt blown nonwoven fabric,second intermediate layer of melt blown nonwoven fabric containing an inorganic antibacterial agent consisting of silver ion and zeolite and innermost layer of spun bonded nonwoven fabric capable of moisture retention for prevention of drying of the nose and mouth parts.

The invention discloses a nitrite-substituted meat processing method, and belongs to the technical field of food processing. The nitrite-substituted meat processing method comprises the following steps: selecting raw materials, carrying out pickling treatment and processing a meat product, so that the final products of the meat product are prepared; and the nitrite is substituted by a nitrite substitute during the step of carrying out pickling treatment. The nitrite substitute comprises the following components in parts by weight: 4-5 parts of monascorubin, 0.7-1.3 parts of betanin, 4-6 parts of potassium sorbate, 2-3 parts of D-sodium isoascorbate, 1.5-2.5 parts of nisin, 9-11 parts of sodium lactate, 1-2 parts of natamycin, 5-6 parts of natural vitamin E, 1-2 parts of a rosemary extract, 0.5-1.5 parts of sage essential oil, 1-2 parts of tea polyphenols, 15-16 parts of L-sodium glutamate, 0.5-1.5 parts of flavoring 5'-disodium ribonucleotide, 40-43 parts of a yeast extract, 4-5 parts of sodium tripolyphosphate and 0.5-1.5 parts of ethyl maltol. The nitrite-substituted meat processing method disclosed by the invention is simple, easy to operate and free of nitrite addition; and the prepared meat products are very good in qualities, color, luster and taste.

The invention relates to an artificial trachea cannula made of nano materials in the technical field of medical appliance and a preparation method thereof; the artificial trachea cannula comprises a respirator joint, an air supply tube, an inflation tube, an inflation gasbag, a drain pipe and a lubricant coating, wherein, the inflation tube is in the air supply tube, the output end of the air supply tube is connected with the respirator joint; an inserting section of the air supply tube is cuniform; the external wall of the air supply tube is provided with inflation gasbags; the position where the inflation tube is correspondingly arranged is provided with holes; the drain pipe is embedded on the external wall of the air supply tube and is adjacent to the inflation gasbag; the side of the drain pipe close to the inflation gasbag is provided with a liquid outlet, the other side thereof is connected with an injector; the lubricant coating is arranged on the external wall of the inflation gasbag and the air supply tube, the air supply tube and the inflation gasbag are made of modified plastics. With the method of the invention adopted, damage to lumen tissue when the tube is inserted is reduced, pain is reduced, complicating disease is prevented from occurring; in addition, the preparation process is easy and controllable, the cost is low, as a result, the method is applicable to batch production.

The invention discloses antibacterial nanofibers or master batches and a preparation method thereof, including components of an antibacterial polymer resin solution and the preparation method of the antibacterial nanofibers or master batches. The antibacterial nanofibers or master batches are characterized by being formed through electrostatic spinning, melt-blowing, fibrillation and two-component compound methods on antibacterial polymer resin solution. Photosensitive molecules in the antibacterial nanofibers or the antibacterial master batches are antibacterial, do not generate a dissolution phenomenon, and are high in efficiency, wide in spectrum and antibacterial; the high temperature resistance of an organic antibacterial agent material is effectively provided; and the application range of an antibacterial agent is further expanded.

The invention discloses a preparation method of nano silver particle loaded antimicrobial titanium dioxide coating. The preparation method comprises the following steps of preparing a titanium dioxide nanotube array on the surface of pure titanium by an anodic oxidation method, and then loading even silver nano particles on the surface and pipe wall of the titanium dioxide nanotube. Through loading the silver particles with nano structure on the titanium dioxide nanotube, the particles are even in size and moderate in content and are distributed uniformly; the combination force of the nano particles and the nanotube is better, the nano particles are not likely to wash out. The process is simple, the implementation cost is low, the antimicrobial effect is significant, and the preparation is valuable for popularization and application.

The invention discloses a method for preparing a nanoparticle coating with the bone induction and antibiosis functions on the surface of a medical metal. According to the method, nanoparticles with different electric properties as used as a carrier, the nanoparticles are formed by mutual crosslinking of high-molecular polymers, and growth factors and antibiotics are respectively loaded in the process of preparing the nanoparticles with dissimilar electric properties, wherein factors and factor-friendly polyanions are sufficiently mixed to react first and are then immobilized into the nanoparticles through ionic crosslinking; and amino-containing antibiotics are grafted to a polyaldehyde anionic polymer through chemical crosslinking first and are then loaded into the nanoparticles through ionic crosslinking. The two types of nanoparticles are alternately assembled on the surface of the medical metal through electrostatic adsorption, covalent crosslinking is also formed among the particles, and the stability of the coating is enhanced. The coating prepared by using the method has the function of controlling adsorption and release of the growth factors and the antibiotics under the normal physiological environment, the activity of the growth factors are keep well and a strong bone induction function is achieved; and in addition, the antibiotics can be slowly released for a long time, and a good antibiosis effect is achieved.

The invention provides a degradable food preservation pad capable of inhibiting bacteria, preventing vibration and absorbing moisture as well as a preparation method thereof. The preparation method ofthe degradable food preservation pad capable of inhibiting bacteria, preventing vibration and absorbing moisture comprises the following steps: spraying a natural antibacterial agent onto surface ofan antibacterial polylactic acid (PLA) / starch foamed material; and then, coating the antibacterial PLA / starch foamed material with a perforated polylactic acid film, thereby obtaining the degradable food preservation pad capable of inhibiting bacteria, preventing vibration and absorbing moisture. The degradable food preservation pad capable of inhibiting bacteria, preventing vibration and absorbing moisture provided by the invention has both internal and external antibacterial effects, so that an internal antibacterial agent can be slowly released while an external antibacterial agent rapidlyfunctions by volatilization or contact with a food; and thus, the degradable food preservation pad synchronously has timely antibacterial effects and long-lasting antibacterial effects. The degradablefood preservation pad capable of inhibiting bacteria, preventing vibration and absorbing moisture has broad-spectrum antibacterial capability, and is capable of inhibiting propagation of microorganisms, reducing food spoilage and prolonging product storage lives; and moreover, the degradable food preservation pad also has water absorbing and vibration preventing effects, so that quality of the products can be ensured. In addition, the degradable food preservation pad capable of inhibiting bacteria, preventing vibration and absorbing moisture provided by the invention is an all biodegradable material which is green, safe and environment friendly; and thus, the degradable food preservation pad has very broad application prospects.

The invention discloses a static spraying composite film and a preparation method and application thereof. A PVDF nanofiber thin film is spun on a roller receiver through electrostatic spinning to serve as a supporting material, then a layer of Cur-PLA microspheres is sprayed through an electrostatic spraying method, and a double-layer film is obtained; an Enro-PLA nanofiber film is spun on the double-layer film through an electrostatic spinning method, drying is carried out, and the electrostatic spraying composite film is obtained. Medicine is carried on polylactic acid fibers and the microspheres, so that the biological activity and antibacterial property of the electrospinning film are achieved; compared with like products, a hydrophilic face formed by the PLA microspheres and the PLA fibers is not single in medicine release capacity, wider in antibacterial performance and larger in contact area with the skin surface. PVDF is adopted as an outer layer for isolating invasion of water vapor and bacteria. The preparation method is simple, the production cost is low, large-scale production can be achieved, application and popularization are convenient, and the final product can completely meet various clinical needs.

The invention relates to a fiber material, and in particular relates to a composite arenga engleri and jute mattress. The composite mattress is prepared through the following steps: preparing arenga engleri fiber: boiling and separating; before loosening, conducting primary bamboo vinegar treatment and secondary bamboo vinegar treatment to jute fiber and arenga engleri fiber; then implementing antibacterial treatment, mixing, dipping and loosening: degumming, carding and shorting, and dipping the short jute fiber and the short arenga engleri fiber which are mixed at a weight ratio of (30-40): (25-50) in lignocellulose aerogel liquid for 15-20min, taking out the mixture, draining off, and loosening and mixing in a loosening machine; carding and forming a net through an airflow: enabling loosened short jute fiber and short arenga engleri fiber drop uniformly from a roller groove through airflow, and uniformly arranging to form a net-shaped half-finished product with an S-shaped cross section; carrying out non-woven punching; roasting at high temperature, wherein the lignocellulose aerogel liquid is prepared by grinding, purifying, freezing and thawing, coagulating and regenerating. The composite arenga engleri and jute mattress disclosed by the invention is sound-insulating and heat-insulating, comfortable and environment-friendly, antibacterial and breathable, and long in service life.

The invention provides a manufacturing method of an antibacterial mask and the antibacterial mask manufactured by the method, wherein an antibacterial material is prepared by taking an inorganic nanoantibacterial material as a functional component and respectively mixing chitin or anion powder, then the antibacterial material is added into a film forming agent to prepare an antibacterial coating,the antibacterial coating is coated on non-woven fabric, and the mask is prepared from the dried antibacterial non-woven fabric with an antibacterial function, thereby realizing uniform distributionof the granular inorganic nano antibacterial material and chitin / anion powder on a base material of the mask, so that the mask has the antibacterial function. The antibacterial mask disclosed by theinvention realizes an antibacterial effect, the breathable effect of the non-woven fabric mask is not affected after the water-based film forming agent is dried, and the problem that the existing maskhas no antibacterial function is solved.

The invention relates to compound formula mouth wash of chlorine dioxide, cetylpyridinium chloride and zinc ion and a preparation method thereof. The compound formula mouth wash comprises the following main raw materials: chlorine dioxide, cetylpyridinium chloride and zinc ions, wherein a solvent is distilled water; the concentration of the chlorine dioxide is 200-500 ppm; the cetylpyridinium chloride accounts for the mass fraction of 0.05-0.2 percent relative to the compound formula mouth wash; and the zinc ions accounts for the mass fraction of 0.5-1 percent relative to the compound formula mouth wash. The preparation method of the compound formula mouth wash comprises the following steps of: dissolving the cetylpyridinium chloride and zinc acetate into the distilled water; dissolving a menthol crystal into 95 percent of ethanol; adding a menthol crystal and ethanol solution to a water solution for stirring, and simultaneously adding glycerol; additionally dissolving chlorine dioxide powder into the distilled water; adding a chlorine dioxide water solution to the water solution while stirring; uniformly stirring, and adding the distilled water to obtain the compound formula mouth wash of the chlorine dioxide, the cetylpyridinium chloride and the zinc ions. The invention can effectively inhibit bromopnea for a long time and has fewer side effects and no obvious irritation on an oral mucosa.

The invention relates to the field of sanitary articles, and provides a natural antibacterial fiber spunlaced non-woven fabric and a preparation method and application thereof. The natural antibacterial fiber spunlaced non-woven fabric comprises hemp fibers and cotton fibers. The preparation method includes the following steps that the hemp fibers and the cotton fibers are pretreated respectively;the pretreated hemp fibers and the pretreated cotton fibers are mixed; the mixed fibers are subjected to opening and picking, carding and combing in sequence to form fine silvers, the fine silvers are pull apart to form fine webs, and then hydrophilic treatment, opening, carding, lapping, drawing, spunlacing, drying and reeling are carried out to obtain the natural antibacterial fiber spunlaced non-woven fabric. According to the method, damage to the hemp fibers is small, the loss is low, and the antibacterial property of the hemp fibers is well retained; the natural antibacterial fiber spunlaced non-woven fabric is good in evenness and combines the advantages that the cotton fibers are soft and comfortable and the hemp fibers are natural antibacterial, dry and breathable; the fabric truly has the advantages of being good in evenness, soft and comfortable, natural antibacterial, dry and breathable, can be widely used in the fields of sanitary napkins, wet wipes, cotton wipes and the like, and has broad application prospects.

The invention relates to a fiber, and in particular relates to a bamboo leaf flavonoid mint core-sheath compound fiber. The bamboo leaf flavonoid mint core-sheath compound fiber is prepared by the following steps: treating tourmaline; treating a core layer material to form a non-woven needle-punched hemp palm fiber aerogel core layer material; treating a sheath layer material, namely, preparing first slurry from 0.1-0.3 part by weight of treated tourmaline, 0.6-0.8 part by weight ethylene glycol, 0.01-0.04 part by weight of bamboo leaf flavonoid and 0.02-0.05 part by weight of beta-cyclodextrin mint oil micro-powder, wherein the preparation method of the beta-cyclodextrin mint oil micro-powder comprises the step of mixing beta-cyclodextrin and mint oil according to the mass ratio of (8-15) to (40-65) at the temperature of 20-30 DEG C to form the beta-cyclodextrin mint oil micro-powder with morphology of a clathrate compound; carrying out an esterification reaction on phthalic acid and glycerol; after the reaction, feeding the first slurry, magnesium oxide and calcium hydroxide, and carrying out a polycondensation reaction; casting a belt and carrying out grain-sized dicing to obtain a polyester chip sheath layer material; carrying out composite melt spinning to prepare the bamboo leaf flavonoid mint core-sheath compound fiber. The bamboo leaf flavonoid mint core-sheath compound fiber has the functions of antibiosis and health protection, and is comfortable and environment-friendly.

The invention discloses a nano-silver anti-microbial regenerated silk fibroin material and a preparation method thereof. The method comprises the following steps: 1) dissolving degumming silk or regenerated silk fibroin in a solvent taking formic acid as a main component, thereby acquiring a fibroin formic acid solution, and then adding a silver salt, stirring and dissolving; 2) adopting different regenerating technologies for processing the fibroin formic acid solution into the regenerated silk fibroin material in different forms; and 3) performing organic solvent after-treatment on the regenerated silk fibroin material, fully washing with deionized water and drying, thereby acquiring the nano-silver anti-microbial regenerated silk fibroin material. The nanometer silver in the regenerated silk fibroin material provided by the invention has the advantages of small grain size, excellent dispersity, high stability and excellent and long-lasting anti-microbial property. The preparation method is simple, the operation is easy, the cost is low and the material can be easily industrialized.

The invention relates to preparation of an anti-microbial coating, and aims to provide a preparation method of a novel hydrophobic anti-microbial coating. The method comprises the following steps: adopting modified fluororesin to film the surface of a clean substrate to prepare a hydrophobic coating; before the hydrophobic coating surface is dried, uniformly coating hydrophobically modified silicon dioxide hollow silver-loaded microspheres on the surface, and after solidifying, obtaining the novel hydrophobic anti-microbial coating. Based on the principle of a biomimetic technology, the method is to embed the mesoporous silica hollow silver-loaded microsphere part in the fluorine-containing organic membrane, on one hand further increases the hydrophobic property of the coating through constructing the nanometer rough coating surface structure, and on the other hand serves a long-lasting antimicrobial function by virtue of the unique structure of the hollow silver-loaded microspheres to slowly release silver ions through the mesoporous channels on the silicon dioxide hollow silver-loaded microsphere surface, so as to achieve integration of the slowly-releasing antimicrobial function and the super-hydrophobic function of the coating.

The invention provides a wear-resistant antimicrobial modified ABS (acrylonitrile-butadiene-styrene) material and a preparation method thereof. The ABS material comprises nano titanium dioxide and nano silver, and a nano titanium dioxide film is formed on the surface of the shaped material. The ABS modified material provided by the invention has continuous antimicrobial effect, can prevent the crystallization and aggregation of the nano material, and effectively enhances wear resistance and other mechanical properties such as bending strength, tensile strength and shock strength.

The invention discloses a method for preparing a multielement co-doped nano titanium dioxide film comprising the following steps: 1) adding ferric nitrate nonahydrate, silver nitrate and guanidine hydrochloride solid into abatase titanium dioxide solution to prepare a mixed solution; 2) sustainably magnetically stirring the mixed solution under the water bath condition and obtaining an uniform sol; 3) storing the sol at room temperature for 10-12 days to obtain aging solution, preparing a coating glass slide by the aging solution and drying; 4) heat-treating the dried coating glass slide at 350-450 DEG C for 1 hour to obtain the multielement co-doped nano titanium dioxide film. The titanium dioxide film of the invention has functions of achievement the red shift of the ultraviolet absorbance, visible light response of the photocatalysis and no light antibacteria.

The invention provides an antibacterial polystyrene modified material and a preparation method thereof. The polystyrene material comprises polystyrene, nanometer titanium dioxide particles, nanometer silver particles, a dispersing modified agent, a styrene butyl acrylate binary grafting modified ethylene-propylene rubber, nano hydroxyapatite whisker, an antioxidant and a processing aid; and after forming, the surface of the material is provided with a nanometer titanium dioxide film formed by a plasma sputtering process. The polystyrene modified material provided by the invention has good mechanical properties and continuous antibacterial effect, and can prevent the agglomeration of the nanometer material and effectively improve the light stability.

The present invention discloses a planting method for high-yielding rice, and the planting method includes the following steps: A, planting broad beans in rice fields, harvesting the broad beans, conducting green manuring and water retting on the harvested broad beans, and applying base fertilizers to the rice fields; and conducting water control on rice seedlings with a seedling age of 15-20 days and a seedling acclimatization for 2-3 days; B, conducting rotary tillage, ridge separating and irrigation on the rice fields, and transplanting the rice seedlings; C, topdressing the rice seedlings with compound fertilizers to promote rice tillering after roots and stems of the rice seedlings are living; D, maintaining a water level of the rice fields at 3-5 cm during the rice tillering stage, topdressing the rice seedlings with urea, potassium chloride and calcium superphosphate, topdressing the rice with N-P-K compound fertilizers with an amount of 80-110 kg / mu and spraying biological pesticides when the rice is in the heading stage; topdressing the rice with the compound fertilizers mentioned in step C with an amount of 25-40 kg / mu when the rice is in the irrigation stage; and cutting off the water supply and drying the rice fields 7-10 days before rice maturity, and harvesting the mature rice. The planting method makes the rice high in yield, good in quality, and less in pesticide residues.

The invention discloses a high-strength antimicrobial nanometer composite cation double-network hydrogel and a preparation method thereof. The hydrogel comprises a first network hydrogel and a second network hydrogel. The preparation method comprises the steps of dissolving a quaternary ammonium monomer, a crosslinking agent and an initiator for the first network hydrogel in an aqueous dispersion containing nanometer montmorillonite, uniformly mixing, and curing and crosslinking under ultraviolet light to obtain the first network hydrogel; dissolving a polymerizable monomer, a crosslinking agent and an initiator in water and then adding the first network hydrogel, fully swelling and reacting to obtain the high-strength antimicrobial nanometer composite cation double-network hydrogel. The preparation method disclosed by the invention has the advantages of simple process and high reaction speed and the hydrogel has excellent mechanical properties and also has antibacterial effect; the material is expected to be widely used in fields such as chemical industry, agriculture and bio-medicines.

The invention relates to the technical field of medical appliance. Ventilator associated pneumonia results from inhalation of secretion with pathogene, wherein, bacterial pollution of gas circuit of the ventilator is a key factor which causes the ventilator associated pneumonia. The invention aims at providing an artificial trachea cannula with broad-spectrum antibacterium property and controllable slowly-releasing drugs; an air providing tube (2), an air bag (4), an air tube (3) and a liquid discharging tube (5) of the artificial trachea cannula of the invention are coated with nanometre anti-microbial coatings (6) on inner and outer surfaces; the nanometre anti-microbial coatings are mainly blended by macromolecule polymers, nanometre inorganic antimicrobial and slowly-releasing drugs. The artificial trachea cannula with nanometre anti-microbial coatings of the invention not only satisfies traditional functions of artificial trachea in providing air path and maintaining respiratory tract clear, but also has functions of excellent bacteriostasis and slowly releasing of controllable drugs, thereby providing wide application prospect to clinical application of the artificial trachea cannula.

The invention discloses a planting method for organic high-yield rice. The method comprises: planting broad beans in a rice field, after harvesting the broad beans, performing green manure dressing and retting, and applying base fertilizer; performing water-controlling harden-seedling on rice seedlings whose seedling age is 15-20 days for 2-3 days; performing rotary tillage, ridge dividing, irrigation on the rice field, and then transplanting rice seedlings; after the rice seedlings survive, dressing a compound fertilizer to promote rice seedling tiller; 13-18 days after rice transplanting, putting newly-hatched ducklings whose day-age is 12-20 in the rice field according to amount of 8-15 per mu, 25-40 days after putting the ducks in the rice field, driving the ducks out of the rice field, spraying biopesticide, performing field draining for 7-10 days, topdressing a nitrogen-phosphorus-potassium composite fertilizer according to amount of 20-50 kg per mu, and then irrigating to 8-10 cm, and driving the ducks in the rice field, 15-20 days before the rice is mature, taking back the ducks, and cutting off water and drying the field. The planting method for organic high-yield rice is high in yield, and obtained rice is good in quality, and high-quality duck meat is obtained.

The invention relates to a processing technique for mats and particularly relates to a processing technique for a China-Hemp and paper straw mixed mat. The processing technique comprises the following steps: cutting waterproof paper into sheets according to specifications of the mat, then wrapping straws with sheety waterproof paper so as to form ropy paper and then reeling to form wefts, and taking China-Hemp as warps for knitting, so as to obtain a mat main body; spraying water by using an atomizer of a pressing machine, heating, pressing polish and carrying out shrinking treatment on the mat main body, so as to obtain a semi-finished mat; soaking the semi-finished mat into a waterproof agent solution with a pH value of 4.5 to 6.5, and then placing the semi-finished mat into a drying oven for drying; arranging well cut lining cloth on peripheries of the dried semi-finished mat, wrapping the semi-finished mat by using the lining cloth, enabling the lining cloth to be symmetric on upper and lower surfaces of the mat, compacting, then carrying out edge covering treatment on the mat, and finally obtaining a finished mat. The mat prepared by using the processing technique provided by the invention are not only nice and cool, air-permeable, wear-resistant, sun-proof and has soft feel, but also has the advantages of bacteriostasis, uvio-resistance and the like, and is long in service life.

The invention belongs to the field of high polymer materials, and discloses a flame-retardant insect-proof antibacterial mat for a floor carpet.The flame-retardant insect-proof antibacterial mat is prepared from low-density polyethylene, high-density polyethylene, decabromodiphenyl ether, polyethylene resin, zinc stearate, antimonous oxide, polyethylene wax, medical stone, natamycin, beta-cyclodextrin, chitosan, silane coupling agent, traditional Chinese medicine additives, citric acid, foaming agent, monoglyceride and color master batch.The product is a green and pollution-free product and has high flame retardance and good insect-proof and antibacterial performance, can restrain breeding of viruses, insects, mites, ants and the like for a long time, can effectively protect the floor carpet, and is harmless to human bodies and free of hidden health and safety dangers in the use process.

The invention discloses a composite fiber film which can be used for a high-efficiency low-resistance smog prevention mask. The composite fiber film has a three-layer structure formed by compounding non-woven fabrics, meltblown cottons and a porous nanofiber film through ultrasonic hot pressing, wherein the outer layer is the non-woven fabrics, the middle layer is the meltblown cottons, and the inner layer is the porous nanofiber film; the porous nanofiber film is made of porous nanofibers, the nanofibers have a porous structure, the diameter of the porous nanofibers is 100-900 nm, the diameter of the nanofibers is 50-400 nm, and the humidity responsive intelligent sterilization efficiency is 98-99.9%. The composite fiber film can effectively improve the filtering efficiency of smog and reduce resistance, and has the characteristics of high-efficiency filtering and ultra-low resistance.

The invention discloses an antibacterial ABS (acrylonitrile butadiene styrene) plastic, which is prepared from the following raw materials in percentage by weight: 94.5 to 98.5 percent of ABS plastic masterbatch, 1.0 to 5.0 percent of acrylonitrile, 0.001 to 0.05 percent of nano-silver, 0.002 to 0.05 percent of dispersant, and 0.1 to 0.5 percent of antioxidant. The invention also discloses a preparation method of the antibacterial ABS plastic, which comprises the following steps of: uniformly mixing the acrylonitrile, the nano-silver and the dispersant to obtain a mixed auxiliary material; heating, stirring and mixing the mixed auxiliary material, the ABS plastic masterbatch, the antioxidant and an organic solvent in a stainless steel stirrer to obtain a mixed raw material; and extruding and granulating the mixed raw material to obtain the antibacterial ABS plastic. The preparation method has a simple process; and the prepared antibacterial plastic has strong bacteria resistance, and a lasting antibacterial effect.

The invention discloses an efficient environmentally-friendly compound feed for groupers. The compound feed comprises the following components in percentage by weight: 35-45% of white fish meal, 5-10% of squid powder, 6-14% of Antarctic krill powder, 10-20% of peeled soybean meal, 7-15% of vital wheat gluten, 6-12% of strong flour, 0.3-1% of calcium dihydrogen phosphate, 2-6% of fish oil, 1-3% of soybean oil, 1-3% of liquid phosphatide, 0.1-0.3% of bacillus, 0.2-0.5% of tributyrin, 1% of a vitamin premix, and 1% of a mineral substance premix. According to the compound feed disclosed by the invention, the health of intestinal tracts of the groupers can be improved, the damage of the intestinal tracts is avoided, the digestive absorption rate of the feed can be increased, the feed coefficient is reduced, and the discharge of nitrogen is reduced, so that the purpose that the compound feed is efficient and environmentally-friendly is achieved.