34results about How to "Natural degradation" patented technology

The invention discloses a liquid plastic film, and belongs to the technical field of agriculture. The liquid plastic film consists of the following components in percentage by weight: 1%-10% of pullulan polysaccharide, 1%-10% of polyglutamic acid and the balance of water, wherein the pullulan polysaccharide is prepared by fermenting aureobasidium pullulans of which the preservation No. is CGMCC No.7055, and the polyglutamic acid is prepared by fermenting bacillus licheniformis. The invention further discloses a preparation method and a use method of the liquid plastic film. The liquid plastic film is biodegradable and does not pollute environment, and after the plastic film is sprayed onto the surface of soil, the temperature of the soil can be raised, the evaporation of water is restrained, water content of the soil is increased, the salt content of the soil is reduced, and the soil can also be improved, so that the physicochemical property of the soil is better, and the growth of plants is promoted; besides, the liquid plastic film has the advantages of simple preparation method, low cost, good convenience in use, saving of labors and material, low cost and easiness in obtaining of raw materials, simple production equipment and technology, zero pollution in a production process, and the like.

The invention relates to a nanofiber membrane carrying an anti-tumor photosensitizer and a preparation method thereof. The nanofiber membrane carrying the anti-tumor photosensitizer is characterized by comprising the anti-tumor photosensitizer and a biodegradable high polymer material. The preparation method is characterized by comprising the following specific steps of: adding the anti-tumor photosensitizer and the biodegradable high polymer material into an organic solvent to obtain spinning solution; and performing electrostatic spinning on the spinning solution to prepare the nanofiber membrane carrying the anti-tumor photosensitizer. The membrane has the advantage of anti-tumor function. The preparation method has the advantages of simple operation, low cost, excellent medicament controlled-release performance and wide application prospect.

The slow releasing soil water retaining agent consists of attapulgite clay powder, volcanic dust, high hydroscopicity resin and wood dust. It can maintain irrigated water and release water based on requirement of crop and tree, and can also absorb water from soil. The slow releasing soil water retaining agent of the present invention may be used in planting crops and greening plant in drought areas.

The invention discloses a water-based honing liquid and a honing method for using the same. The water-based honing liquid comprises the following components in parts by mass: 10-30 parts of a cooling agent, 15-25 parts of a cleaning agent, 15-25 parts of a lubricating agent, 30-50 parts of an anti-rust agent, 1-5 parts of a coupling agent and 1-5 parts of a balancing agent, wherein the cooling agent consists of the following components in percentage by mass: 20-40 percent of an ethylene glycol high polymer and 60-80 parts of absolute ethanol. The water-based honing liquid has the effects of protecting the environment, cooling, cleaning, lubricating and preventing rust. Due to the adoption of the water-based honing liquid and the honing method disclosed by the invention, the processing efficiency of flat table net grains on an engine cylinder sleeve can be increased, and the quality of the flat table net grains can be enhanced.

The invention relates to the field of agricultural liquid mulching films, and discloses a black liquid fertilizer mulching film and a method for preparing the same.The black liquid fertilizer mulching film comprises asphalt, seaweed concentrated liquid, polyvinyl alcohol, carboxymethyl celluloses, silk protein powder, oxygen producers, inorganic fertilizer particles, alkyl diamine, tween and water.The method includes heating the asphalt until the temperature of the asphalt reaches 150-190 DEG C and stirring the asphalt; adding the seaweed concentrated liquid, the polyvinyl alcohol, the carboxymethyl celluloses, the silk protein powder, the oxygen producers, the inorganic fertilizer particles, the alkyl diamine and the tween into the water, uniformly stirring the seaweed concentrated liquid, the polyvinyl alcohol, the carboxymethyl celluloses, the silk protein powder, the oxygen producers, the inorganic fertilizer particles, the alkyl diamine and the tween and heating the seaweed concentrated liquid, the polyvinyl alcohol, the carboxymethyl celluloses, the silk protein powder, the oxygen producers, the inorganic fertilizer particles, the alkyl diamine and the tween until the temperatures of the seaweed concentrated liquid, the polyvinyl alcohol, the carboxymethyl celluloses, the silk protein powder, the oxygen producers, the inorganic fertilizer particles, the alkyl diamine and the tween reach 45-65 DEG C; uniformly mixing materials prepared at the steps 1) and 2) with one another and then grinding the materials to obtain the black liquid fertilizer mulching film.The black liquid fertilizer mulching film and the method have the advantages that excellent film-forming effects can be realized by the black liquid fertilizer mulching film on earth surfaces after the black liquid fertilizer mulching film is used, soil structures can be improved, outstanding water retention, heat preservation and soil moisture preservation effects can be realized, and the black liquid fertilizer mulching film is easy to degrade and has functions of increasing fertilizers and promoting growth of root systems of crops.

The invention relates to a polymerized product preparation system based on plant fiber mould pressing. The polymerized product preparation system comprises a crushing unit, a mixing unit, a forming unit and a central control unit. According to the invention, a preset purpose matrix S0 and a preset size standard matrix group C0 are arranged in the central control unit, and the rotating speed of the blades in a crusher is adjusted according to the actual purpose of a product to be prepared so as to crush a plant fiber raw material to a specified size, so that the materials can be uniformly mixed in the subsequent preparation process; therefore, the prepared plant fiber mould pressing polymerized product can meet the corresponding standard for the field to which the specified application belongs, and the preparation efficiency of the system is effectively improved.

The invention discloses a preparation method of a casein keratinase crosslinked polymer membrane, and belongs to the technical field of leather working. The method comprises the following steps: 1) mixing a casein solution with a keratin solution, and then adjusting the pH value of the mixed solution to 6.5-7.5, stewing to obtain a protein mixed solution; 2) adding glutamine transaminase transferase to the mixed solution according to the adding amount of 10-30U of transferase in each gram of dry matter protein, carrying out crosslinking reaction after fully and evenly mixing, and then inactivating, so as to obtain a mixed hybrid polymer of casein and keratin; 3) adding a film-forming agent to the mixed hybrid polymer of casein and keratin, and then molding, so as to obtain the casein keratinase crosslinked polymer membrane. The casein and the keratin are crosslinked under the catalytic action of the glutamine transaminase transferase, so as to form a covalent crosslinked macromolecule polymer. The crosslinked macromolecule polymer is improved in mechanical property, strong in water-resisting property, and good in biocompatibility, can be completely biodegraded, and has a broad application prospect in the fields of a zoology coating and a biological membrane.

The invention discloses intelligent briefs for a woman. The intelligent briefs comprise a brief body. The brief body comprises an abdomen part and a protection part, a miniature draught fan is arranged on the front side of the abdomen part, and a control chip is arranged on the rear side of the abdomen part and is in communication with the miniature draught fan. Two air inlet channels are formed in the front side of the protection part and respectively connected with an air blowing opening of the miniature draught fan, and extend to the tail end of the protection part, and air outlets of the two air inlet channels are formed in the middle of the protection part. The technological means that the briefs are provided with the air inlet channels and the miniature draught fan is adopted in cooperation with a temperature sensor, after the woman wears the intelligent briefs, when the value of the temperature of the middle of the briefs is larger than a threshold value, the miniature draught fan begins to work, air flows through the air inlet channels to reach the middle of the protection part, excessive heat is taken away, the temperature of the crotch of the woman is reduced, the comfort of the woman is improved, and particularly, in the menstrual period of the woman, it can be guaranteed that the crotch of the woman is clean and cool.

The invention provides a filter element for filtering air, and belongs to the field of air purification. The filter element comprises a casing, wherein the casing is provided with an air inlet end and air outlet end; a primary filtration layer, a microfiltration layer and a nanofiltration layer are sequentially arranged in the casing from the air inlet end to the air outlet end; the microfiltration layer comprises at least two layers of overlapped micron fiber membranes; the nanofiltration layer comprises at least two layers of overlapped nanofiber membranes; both the micron fiber membranes and the nanofiber membranes are processed by raw materials containing chitosan through electrostatic spinning technology. The filter element adopts a multistage filter element combination, performs separation, filtration and purification on aerosol particles with different particle sizes, and is high in filtration efficiency. The filtration efficiency of the filter element on PM2.5 particles in the air is 99.9 percent or higher, and high-efficiency purification on PM2.5 is realized. Tests indicate that compared with the filter element in an air purifier, the filtration efficiency of the filter core is 100 times or higher of that of the original filter element.

The invention discloses a microbiological deodorization method, which belongs to the technical field of disinfection and deodorization, and comprises the following steps: S1, preparing a microbial preparation, S2, pre-stirring a strain combination; S3, preparing a deodorant from the prepared composite microbial preparation according to the mass; and S4, putting a prepared deodorant into an ultrasonic atomizer or a spray tower. According to the invention, the microbial preparation is creatively adopted to perform spray deodorization on the odor source, so that the deodorization efficiency is high, the effect is good, the treatment cost of the odor source and odor is effectively reduced, the overall operation difficulty is low, only the polluted area is atomized, the odor is effectively controlled before volatilization, the odor pollution spreading can be effectively controlled, and the influence on the operation environment is avoided; the microbial inoculum is non-toxic, can be naturally degraded, has no residue after deodorization, does not need additional neutralization and filtration, has higher environmental adaptability, and meets the deodorization requirements of small and medium-sized farms and small and medium-sized garbage collection stations.

The invention discloses a coffee-flavored completely biodegradable plant-based material as well as a preparation method and application thereof, and belongs to the technical field of polymer modification. The material comprises the following components in percentage by mass: 40-90% of polylactic acid; 3-30% of toughening resin; 1-50% of coffee grounds; and the balance of auxiliaries. The coffee-flavored completely biodegradable plant-based material is obtained by extrusion granulation or molding through extensional rheological plasticizing extrusion equipment. The material can be applied to food contact materials such as disposable catering materials and food packaging materials, the environmental protection pressure is reduced, and the application level of the coffee grounds is improved. The material has the advantages of simple preparation process and controllable and adjustable reaction process.

The invention discloses a plant fiber firework pipeline and firework base and a preparation method thereof. The plant fiber firework pipeline and firework base is prepared from the following raw materials in parts by weight: plant fibers, waste paper, starch, boiling water, a moisture-proof agent, and a release agent. The plant fibers, the waste paper, the starch, the moisture-proof agent and therelease agent are adopted as raw materials, the use amount of the paper can be indirectly reduced, and environmental pollution in the papermaking process is correspondingly reduced; meanwhile, a new application is provided for plant straw, pollution caused by incineration of the plant straw is avoided, and the income of farmers is increased; the prepared firework pipe can be naturally degraded, and the degraded product can also increase the soil fertility and optimize the soil; in addition, the prepared firework pipe can be recycled and reused for manufacturing a firework outer barrel or usedas fuel; the regenerated plant fibers are utilized, and the prepared firework pipe is a purely natural and environment-friendly product, can be naturally degraded, can be recycled as papermaking raw materials, can be used as fuel for secondary utilization and the like.

The invention relates to an aluminum alloy cutting fluid and a preparation method thereof. The aluminum alloy cutting fluid is characterized by being prepared from the following raw materials in percentage by weight: 15-30% of naphthenic oil, 5-8% of borate containing sulfur and nitrogen, 3-5% of potassium borate, 2-4% of triethanolamine oleate, 4-8% of a non-ionic surfactant, 2-4% of an anionic surfactant, 1-3% of a corrosion inhibitor, 1-3% of an antirust agent, 0.5-2% of a stabilizer, 0.1-1.0% of a defoaming agent, 0.1-0.5% of a composite fungicide and the balance of deionized water. The aluminum alloy cutting fluid provided by the invention has good extreme pressure antiwear property, corrosion resistance, defoaming performance and stability, does not damage a cutting tool and is friction-free and wear-free to a workpiece, separation is easy during cutting, service life is long, and no pungent smell, low toxicity, environmental friendliness and easiness in cleaning and degradation are realized; and the aluminum alloy cutting fluid also has excellent cleaning and cooling performance and can rapidly take away a tremendous amount of heat and cutting powder produced during high-speed cutting processing.

The invention discloses water-based gloss oil coated lining paper and a processing technology thereof, wherein the water-based gloss oil coated lining paper comprises a raw paper layer, a protective layer arranged on one surface of the raw paper layer and an ink layer arranged on the other surface of the raw paper layer; the ink layer is a coating layer formed by printing water-based gloss oil onone surface of the raw paper layer through a printing device and drying; and the protective layer is a coating layer formed by coating a modified acrylic resin coating on the other surface of the rawpaper layer and drying. According to the water-based gloss oil coated lining paper and the processing technology thereof, the protective layer is arranged on one surface of the raw paper layer, and the protective layer is the coating layer formed by coating the other surface of the raw paper layer with the modified acrylic resin coating and drying, so that the water-based gloss oil coated lining paper has pure, transparent and bright color, and the attractiveness of the water-based gloss oil coated lining paper is improved; and secondly, the water-based gloss oil coated lining paper has the advantages of wear resistance, scratch resistance, adhesion resistance and water resistance, has the safety of no peculiar smell, no toxicity and incombustibility, and meets the food hygiene requirements.

The invention provides a biocatalysis preparation method of high-conductivity poly(3,4-ethylenedioxythiophene)/lignosulfonic acid dispersion liquid. The biocatalysis preparation method comprises: taking peroxidase as a catalyst, taking hydrogen peroxide as an oxidizing agent, initiating a monomer 3,4-ethylenedioxythiophene to carry out a primary reaction, a secondary reaction and a tertiary reaction, and then purifying by using cation-anion resin, and adding ethanediol, dimethyl sulfate and dimethyl sulfoxide, mixing uniformly, and carrying out homogeneity treatment, cooling to the room temperature to obtain a product; lignosulfonic acid is prepared from processes of activation, grafted condensation, sulfonation, ultrafiltration purification and the like on wheat straw alkaline lignin. According to the preparation method, the wheat straw alkaline lignin is modified and prepared into the lignosulfonic acid with high molecular weight and high sulfonic group content, and high-conductivitypoly(3,4-ethylenedioxythiophene) dispersion liquid is prepared by using bio-enzyme to catalyze polymerization reaction, at the same time, the production cost is reduced, the resources are saved and the environmental pollution caused by the waste liquid of paper making is alleviated; the method has the double beneficial effect of economic and environmental protection.

The invention relates to a UV curing adhesive and a preparation method thereof. The preparation method of the UV curing adhesive comprises the following steps: adding 30-60 parts of poly(butylene succinate) modified acrylate resin, 15-50 parts of a filler, 15-40 parts of an active monomer and 1-10 parts of a photoinitiator into a stirring pot and carrying out rapid stirred for 20-50 min; and then adding 0.5-5 parts of a flatting agent, and continuing stirring for 5-20 minutes. The UV adhesive provided by the invention can be naturally degraded under certain conditions after being cured, and is green and environment-friendly.