67results about How to "Eliminate white pollution" patented technology

The invention relates to a degradable liquid mulching film and a production method thereof, particularly to an environment-friendly degradable liquid mulching film with straws as a basic raw material and a production method thereof. The degradable liquid mulching film is prepared from steaming slurry of crop straws (such as wheat straws, rice straws, cotton straws, wood shavings, and the like) or straws paper-making black liquor as a main raw material by a series of reactions, such as sulfonation, crosslinking and copolymerization, of macromolecules in the slurry or the black liquor, such as lignin, cellulose and polysaccharides, under the action of a film formation additive. The macromolecules in the degradable liquid mulching film have a large amount of hydrophilic groups which can effectively catch the water molecules evaporated and diffused from soil to the air, so as to prevent water evaporation and heat loss arising therefrom, thereby increasing the temperature and preserving soil moisture. The degradable liquid mulching film is helpful for increasing crop yield and improving crop quality; and the yield is higher than that by use of a plastic mulching film, and the per mu yield is increased by more than 5%. The degradable liquid mulching film can replace the conventionally used plastic mulching film.

The invention discloses a master batch capable of fully and biologically degrading a plastic film and a preparation method thereof, and belongs to the field of high molecular films. The formula of the master batch comprises the following materials in parts by weight: 100 parts of starch, 2-9 parts of coupling agent, 8-18 parts of dispersing agent, 8-25 parts of polycyclolactone, 1-50 parts of polylactic acid, 8-15 parts of poly (hydroxybutyrate-hydroxyvalerate) (PHBV), 10-25 parts of plasticizer, 0.15-1.0 part of anti-tackiness agent, 0.15-1.2 parts of pro-oxidant and 1-15 parts of chemical precipitation promoter. The preparation method of the master batch comprises the three steps of: thinning the starch; mixing; and forming. The product provided by the invention has the advantages of high starch content, being a fast-growing and renewable resource, rich resource, low unit cost, high substitutability, obvious economic benefit and ecological benefit and capabilities of reducing the content of polycyclolactone, increasing polylactic acid and poly (hydroxybutyrate-hydroxyvalerate) (PHBV), improving product performance and meanwhile reducing cost.

The invention relates to a modified asphalt-based filling and sealing agent using waste foam and a preparation method thereof. The filling and sealing agent contains heavy traffic paving asphalt, a polystyrene resin particle, a surfactant, a plasticizer, a modifier, an antifoaming agent, a filling material and water, wherein the polystyrene resin particle is prepared from waste polystyrene foam products. The filling and sealing agent is a uniform grey black liquid, has a pH value of 9 to 10, solid content of 75 to 85%, a residue softening point of no less than 78 DEG C, residue penetration of 39 to 80 dmm, a flow value of 3 to 8 mm after surface drying, an elastic recovery rate of 46 to 66%, bonding strength of no less than 0.4 MPa and no water seepage at a pressure of 0.3 MPa; and a sample does not fracture in 3 weeks when drawn by 50% at a low temperature of -10 DEG C to -20 DEG C; cold filling and sealing or hot filling and sealing in an on-site heating manner can be adopted for the filling and sealing agent, and storage stability of the filling and sealing agent lasts for 12 months. The preparation method has the advantages of low cost, simple preparation technology and easily available raw materials.

The invention discloses a nano silver polyester biodegradable preservative film, which is prepared by steps of chain extension and modification of dihydric alcohol copolyester of diacid and fatty group by introducing aromatic group and fatty group, the nano silver polyester biodegradable preservative film has strong antibiosis, anticorrosion and fresh-keeping functions, greatly increases the storage and fresh-keeping period of the food, and has modified atmosphere function; in addition, the nano silver polyester biodegradable preservative film has the advantages of excellent performance, high molecular weight, high branching degree, high crystallization degree, less impurity, no toxicity, and biodegradable performance by burying in soil after discharging.

The invention discloses a polyester biodegradable shopping bag, which is used for supermarket shopping and is prepared by chain extension and modification of diacid and dihydric alcohol copolyester of diacid fatty group of introduced aromatic group, and the polyester biodegradable shopping bag has the advantages of excellent performance, high molecular weight, high branching degree, high crystallization degree, less and nontoxic impurity content, and biodegradable performance.

The invention relates to a formula of edible tableware. The formula includes sorghum flour, buckwheat meal, corn meal, low gluten flour, flour, rice flour and solvents. The technical problem that human injuries are caused by the conventional tableware is solved.

The invention relates to a bio-based environment-friendly degradable material, a film prepared from the bio-based environment-friendly degradable material and a preparation method of the film. The material is prepared from the following raw materials: starch, polylactic acid, glycidyl methacrylate, magnesium stearate, epoxy soybean oil, glycerol, diphenylmethane diisocyanate, 2-phenyl-2-oxazoline,sodium dodecyl benzene sulfonate, 1,3-dimethyl-6-aminouracil, N,N'-bis(2,6-diisopropylphenyl)carbodiimide, dioctadecyl pentaerythritol diphosphite, cerium stearate, phenyl bis(2,4,6-trimethylbenzoyl)phosphine oxide and potassium chloride. The material can be applied to preparation of the film. The prepared film has high mechanical properties, and can be degraded rapidly in a short time, thus eliminating the 'white pollution' truly.

The present invention relates to a flyash water-proof heat-insulating material, which characterized by that it is made up by using flyash and waste old foamed plastics as main raw material, and its composition comprises (wt%) 60%-70% of flyash, 2%-5% of foamed plastics, in which the coarse aggregate (1mm-2mm) is 65%-75% and the fine aggregate (0.5mm-1mm) is 15%-30%, AN microexpanding agent addition quantity is 0.5%-1%, water-reducing agent is 0.5-1%, water repellent is 0.5%-1% and cement addition quantity is 15-30%. Under the flyash water-proof heat-insulating material with large addition quantity of flyash are laid three-layers of high-quality ageing-resisting plastic film (ARPE) as flexible pre-water-proofing layer, so that it not only has the water-proofing function, but also can resist the irradiation of 100% UV ray.

The apparatus for converting waste plastic and rubber into combustible gas includes one gasifying furnace and one cooling liquid trap possessing both cooling and gas-liquid separating functions. The gasifying furnace is one vertical furnace with top material inlet, lower slag outlet, furnace grill over the slag outlet, one top air nozzle connected through one air regulating valve and air pipeline to one air blower, and one gas outlet pipe set in the middle part and connected to the cooling liquid trap. The apparatus can convert waste plastic and rubber into combustible gas capable of being applied as fuel and chemical material while obtaining ash capable of being used as trace element fertilizer and liquid capable of being reused. It has high conversion rate, no secondary pollution and other advantages, and makes it possible to eliminate white pollution radically.

The invention relates to a preparation method for a biomass biodegradable seedling-raising tray. The preparation method comprises the following steps: mixing biomass with urea in a mass ratio being 50:1, mixing the mixture with water in a mass ratio being 10:1, sealing for 30 days at the temperature of 25-45 DEG C after stacking; then, adding a polyvinyl alcohol aqueous solution with concentration being 0.1-5%, grinding and crushing the biomass (straws or stalks) into straw slurry with size being 50-100 meshes; preparing the slurry into a seedling-raising tray wet green body; and finally, feeding the seedling-raising tray wet green body to a drying line ( with the temperature being 80-120 DEG C) to dry, thereby obtaining the biodegradable seedling-raising tray. According to the preparation method, the needed material source is wide, obvious advantages on cost and environmental pollution are achieved, the process is simple, and the operation is convenient.

A water-proof, heat-insulating, dedusting and warming ecologic roof is made up of the plastic water boxes closely arranged on concrete roof. The plastic water box contains water and soil in which plants grow. It has the functions of water-proofing, thermal insualtion, absorbing dust, warming, oxygen generation and natural evaporation.

The invention discloses a hydraulic steam recycling device which is characterized in that the invention comprises a pressurizer (1) and the pressurizer (1) is connected with a hydraulic cylinder (3) through a heat insulated shaft joint (2). The hydraulic cylinder (3) is connected with a hydraulic station (5). The hydraulic station (5) is provided with an electrical control gear (4). The invention has the advantages of small size, beauty, simple and flexible mounting as well as stable and reliable operation. Simultaneously the invention is simple, convenient and east to control the devices. The reciprocating speed of the hydraulic cylinder can be adjusted at any time according to the size of a boiler output and the amount of the steam with water in a closed loop to lead the devices to be in a reasonable operation state at any time; thereby greatly improving the stability and reliability of the whole set of the devices.

A method of photocatalytic synthesis of a jackfruit filament polysaccharide antibacterial membrane is disclosed. The method includes S1) mixing and extracting jackfruit filament degreased powder with water for 2-4 h, then performing concentration, adding ethanol into the product of concentration, allowing the mixture to stand, and centrifuging and separating the mixture to obtain a precipitate A; S2) preparing the precipitate A into a polysaccharide solution having a concentration of 40-60%, fully mixing the polysaccharide solution with glycerin in a mass ratio of 1:0.016, and then heating the mixture with a water bath to obtain a solution B; S3) adding titanium dioxide particles into water and performing ultrasonic dissolution to obtain a solution C; and S4) adding the solution C into the solution B slowly, performing photocatalytic treatment, then evenly pouring the mixture to a culture dish and finally performing vacuum drying to obtain the antibacterial membrane. The antibacterial membrane has good mechanical performance, water vapor barrier performance and optical characteristics, and also has surface antibacterial activity, thus meeting food package strength requirements and mechanical processing requirements, overcoming the food safety problem caused by microbial breeding on surfaces during a food storage process and expanding deep development and utilization of jackfruit leftovers.

A message leaving method and device for a patient terminal, a storage medium, and a terminal are provided. The method comprises: determining message information according to a user's message leaving operation on the patient terminal; displaying the message information on the screen saver interface of the patient terminal; enabling the patient terminal to always remain in the screen saver interfacebefore all message information displayed on the screen saver interface is read and/or deleted. The method and device can avoid failure of message leaving, improve the reading success rate of the message, and improves the communication efficiency with the patients.