126results about How to "Solve white pollution" patented technology

The invention discloses an urban garbage and sludge resource comprehensive utilization system. Urban garbage is fed into garbage feeding/sorting equipment (1) and, after primary sorting, primary rough crushing and primary screening, is divided into two parts: oversize materials and undersize materials. The oversize materials include paper and paper plastic composite materials left after air separation and secondary sorting and plastic, wherein the paper and paper plastic composite materials are fed into paper pump recovery equipment (2) to recover high-quality paper pulp; the waste plastic is fed into waste plastic oil producing equipment (3) for recovering fuel oil by low-temperature catalytic pyrolysis, and the slag (active carbon powder) is used in waste gas purification equipment (50) directly. The undersize materials include inorganic materials and organic materials, which are separated by secondary screening by a vibrating screen, wherein the inorganic materials are fed into a baking-free brick production equipment (6), dried, crushed and added with ingredients such as coagulator to produce baking-free bricks; and the organic materials are mixed with sludge from sludge feeding equipment (4) in a ratio and then fed into organic fertilizer production equipment (5) for producing organic fertilizers by special processes such as high-temperature high-pressure degradation and microbial fermentation.

The present invention belongs to the macromolecular material technical field and concretely relates to natural fibre enhanced polylactic acid composite material and a preparation method thereof. The composite material consists of graft modified polylactic acid and the natural fibre. A concrete preparation step is that a polylactic acid matrix is processed for the graft modification, so as to improve the interface combined degree of the natural fibre and the polylactic acid matrix. Firstly, the polylactic acid is processed for the graft reaction with maleic anhydride under the action of an initiator to prepare the graft modified polylactic acid matrix; then the modified polylactic acid and the natural fibre are compounded to obtain biological full-degraded natural fibre enhanced polylactic acid composite material. Compared with pure polylactic acid, the mechanical performance and the thermal performance of the composite material are all improved, and the composite material can be used for preparing the project plastic with rigorous condition requirement. The composite material of the present invention can be degraded completely in the natural environment after being used and wasted and belongs to environmental friendly material.

The invention discloses a starch-polyvinyl alcohol dual-degradationplastic film, and relates to the technical field of film production. The starch-polyvinyl alcohol dual-degradation plastic film is made by using the following raw materials, by mass, 50-65 parts of starch, 15-30 parts of polyvinyl alcohol, 5-10 parts of Sa-son seed gum, 2-8 parts of hydroxy propyl cellulose, 5-10 parts of pulullan polysaccharide, 3-6 parts of nanometer silica, 5-10 parts of zinc stearate, 4-8 parts of oxidized polyethlene wax, 2-4 parts of ethyl silicon oil, 3-5 parts of calcium carbonate, 4-10 parts of glutaraldehyde and 3-5 parts of octodecyl alcohol. The plastic film made in the invention has biological and optical degradation effects, can effectively solve the white pollution problem caused by difficult degradation of common plastic films, and has the advantages of simple production technology, low cost and industrial production benefiting.

The invention relates to the technical field of high polymer materials, in particular to toughened polylactic acid composition and a preparation method thereof. The toughened polylactic acid composition comprises components in parts by mass as follows: 100 parts of polylactic acid, 0.5-20 parts of bio-based vulcanized lactoprene rubber particles and 0-0.6 parts of a hydrolysis-resistant agent. The biologically degradable bio-base vulcanized lactoprene rubber particles are used for toughening polylactic acid, the toughness of polylactic acid is remarkably improved, the polylactic acid can be completely biologically degraded, and the prepared toughened polylactic acid composition capable of being completely biologically degraded has higher elongation at break and notch impact strength.

The present invention discloses one kind of completely biodegradable hydrophobic material and its preparation process. The starch-base biodegradable material is prepared through reaction and extrusion in extruder of the following material: starch, PVA, lactone polymer capable of reacting with hydroxy group, biodegradable polymer, initiator and other assistant. The present invention has the advantages of low cost, high hydrophobicity of the product, simple operation, complete biodegradation of the material to eliminate 'white pollution', etc. The present invention is suitable for continuous production.

The present invention discloses one kind of composite board and its making process. The composite board is made with waste plastic, plant fiber, calcium carbonate, polyethylene wax and other material, and through plasticizing, mixing and extruding in a plastic extruding machine, and pressure forming in a large hydraulic press. It has low production cost, environment friendship, high moisture resistance and high fire-proofing performance, and may be applied in furniture, packing box, building shuttering, indoor decorating, etc.

The invention relates to a biodegradable thin-film material strengthened by plant fibers and a preparation method thereof. Raw materials and parts by weight thereof used are as follows: 20 parts to 45 parts of plant fibers, 30 parts to 50 parts of starch, 20 parts to 35 parts of vinyl monomers, 20 parts to 30 parts of biodegradable plastics, 10 parts to 15 parts of plasticizers, 3 parts to 5 parts of water and 0.5 part to 3 parts of heat stabilizers. The preparation method of the thin-film material comprises the steps: the plant fibers, starch, vinyl monomers and water of certain quantities are evenly mixed and radiated by a cobalt Gamma 60 source or an electron accelerator for 0.5kGy to 20kGy; the material after radiation is mixed with the biodegradable plastics, the plasticizers and the heat stabilizers; then a twin screw is used for preparing a thin-film special material; and finally the thin-film is formed by means of blow molding using a single screw. The completely biodegradable thin-film has good water resistance and heat combination performance and is applicable to producing farming terra films and packing films so as to solve the white pollution problem caused by the heavy use of oil-based plastic.

The invention discloses a steel fiber polystyrene particle regeneration thermal insulation concrete and a preparation method thereof, and belongs to the technical field of building materials. The steel fiber polystyrene particle regeneration thermal insulation concrete is prepared from the following raw materials in parts by weight of the total weight of raw materials: 6-8% of water, 12-14% of cement, 28.5-32% of river sand, 41-48.8% of regenerative coarse aggregate, 1.0-2.5% of resin gelatine powder, 1.5-3.5% of steel fiber, 0.1-0.2% of water reducing agent and 0.6-0.8% of polystyrene particle. The invention also discloses a preparation method for the above steel fiber polystyrene particle regeneration thermal insulation concrete. The regeneration thermal insulation concrete disclosed bythe invention has the advantages of fire resistance, low density, small thermal conduction coefficient, sound isolation, shake resistance, low price, light weight, high intensity, energy saving, wasteutilization and the like.

The invention discloses a novel environment-friendly material thermoplastic eutectic. The thermoplastic eutectic is prepared from 55%-75% of superfine microporous inorganic powder, 3%-5% of a high-carbon linker and 20%-42% of various kinds of macromolecular resin. The thermoplastic eutectic has the effects that the thermoplastic eutectic is capable of saving energy and reducing emission, environment-friendly, low in price and recyclable and can be split into fine powder under sunlight irradiation in a natural environment, and the problem of white pollution can be solved completely.

The invention belongs to the technical field of an agricultural thin film, and discloses a preparation method of a full-degradable soil moisture preservation agricultural mulching film. The agricultural mulching film is prepared from the following raw materials in parts by weight: 20 to 40 parts of poly-hydroxyalkanoate polymers, 8 to 15 parts of fatty ester condensation polymers, 20 to 30 parts of sea algae extracts, 100 to 150 parts of n-hexane, 30 to 40 parts of okra straw and leaf powder, 5 to 10 parts of corn stigma, 3 to 5 parts of modified clay powder, 10 to 15 parts of film forming agents, 5 to 12 parts of cross linking agents, 3 to 5 parts of photosensitizers and 8 to 15 parts of optional functional auxiliary agents. The mulching film provided by the invention has the advantages that the film forming effect on the ground surface is good; the speed is high; the automatic full degradable effect can be achieved; the effects of soil moisture preservation and temperature rise can be achieved; the functions of improving the soil structure and improving the soil fertility are realized.

The invention discloses a degradable aliphatic polycarbonate composite film material and a preparation method thereof. The composite film material is formed by blending and compounding poly (propylene carbonate) with polyethylene glycol, wherein the content of polyethylene glycol is 20 to 60 weight percent, and the content of the poly (propylene carbonate) is between 40 and 80 weight percent. The preparation method comprises the following steps that: the poly (propylene carbonate) and the polyethylene glycol are respectively dissolved in organic solvents and made into solutions; the two solutions are well mixed pro rata and volatilized at room temperature so as to eliminate most of the solvents, and then mixed liquid is cast in a plate glass mold; and after the mixed liquid is vacuum-dried to constant mass, a PPC-PEG composite film material can be obtained. The composite film material provided by the invention obviously improves the properties of the poly (propylene carbonate), effectively solves the increasingly serious white pollution problem, and has important significance for ecological environment protection. The preparation method is simple in process, convenient to operate, easy to realize, low in equipment dependence and little in material consumption.

The invention relates to a method for using foam polyphenylacetylene to produce polyphenylacetylene extruded plastic foam plate, which comprises: (1), classifying the foam polyphenylacetylene material via colors; (2) breaking said material, and making particle in the particle maker, while the temperature is 160-200Deg. C; (3), collecting the particles, adding agent, mixing, while the ratio between the particles and the agent is 100:0-10; (4) mixing and fusing said particles in plastic extruder, adding carbon dioxide foaming agent, to foam, while the mass ratio between the particle and the foaming agent is 100:4-15, to be extruded from mould, to obtain the foam plastic plate.

The invention discloses a method for manufacturing bamboo/wood-based lining plastic doors and windows. The method comprises a step of: filling a lining material in a cavity of a polyvinyl chloride (PVC) section; and a method for preparing the lining material comprises the following steps of: preparing materials, wherein the lining material consists of the following components in percentage by mass: 45 to 55 percent of regenerated resin, 40 to 50 percent of plant fiber powder, 1 to 5 percent of plant fiber powder surface treating agent, 1 to 5 percent of lubricant and 1 to 5 percent of flexibilizer; uniformly stirring the components, and performing extrusion molding through a mold to obtain a blank material; and finishing the surface of the blank material, so that the finished blank material is fitted with the cavity of the PVC section. The bamboo/wood-based lining plastic doors and windows manufactured by the method have the characteristics of low cost, environment friendliness, high heat preservation and the like.

The invention belongs to the technical field of film blowing resin and particularly relates to ethanolamine activated Na-montmorillonite and polymer composite biodegradable film blowing resin. The resin is prepared from, by weight, 50-80 parts of polyester polymer, 20-50 parts of plant starch, 5-8 parts of ethanolamine activated Na-montmorillonite, 0.5-1 part of a grafting auxiliary, 0.5-1 part of maltitol, 10-25 parts of a reactive assistant and 1-5 parts of a functional assistant. According to the resin, plant starch serves as a raw material and is subjected to gelatinization and starch compound plastification modification, the composite materials are mixed through ethanolamine activated Na-montmorillonite, the lamellar structure of modified montmorillonite is evenly dispersed in the mixture so that the molecular structure of the mixture can be more stable, then the grafting auxiliary is added for grafting of starch and copolymerization of starch and polymer, the molecular structure of starch and polyester in the composite materials is changed, and accordingly the aims of improving tensile strength and tear strength of the composite material, increasing the breaking elongation of the composite material, reducing cost and the like are achieved.

The invention discloses a biodegradable film modified by epoxidized lignin and a preparation method thereof. The biodegradable film comprises the following components in parts by weight: 50-95 parts of degradable plastic; 5 to 45 parts of epoxidized lignin; 0.5 to 5 parts of a plasticizer; and 0.5-3 parts of a lubricant, wherein the weight-average molecular weight of the epoxidized lignin is not less than 5000. The epoxidized lignin with a certain molecular weight is used for modifying and degrading plastic, the compatibility and dispersity of lignin in a plastic matrix are improved, meanwhile, an epoxy group of the epoxidized lignin and plastic macromolecules are subjected to a grafting chain extension reaction, and the processing performance and mechanical performance of the material areimproved.

The present invention discloses an environment-protecting type water-soluble emulsion formed from polyvinyl alcohol, water, polystyrene foam, ethyl acetate, ionic emulsifier and non-ionic emulsifier through the processees of oil phase and water phase treatment and water-oil mixing and stirring. Said emulsion contains no formaldehyde and benzene harmful materials, and is non-toxic and has a certain water-proofing property, can be directly used for bonding wood, also can be made into water paint for internal wall by adding filler and adjuvant, its adhesive strength is greater than 300 kp, and the paint prepared by using said emulsion is soaked in water for 48 hr, it has no peeling, blistering or scaling, can be washed for above 400 times.

The invention discloses a mildew-proof water-resistant seedling pulp molded product and a preparation method and application thereof. The mildew-proof water-resistant seedling pulp molded product comprises the following components in parts by mass: 2-5 parts of a mildew-proof agent, 3-5 parts of cationic starch, 1-3 parts of polyvinyl alcohol, 0.5-1.5 parts of a wet strength agent, 1-3 parts of modified polyvinyl alcohol fibers, and 100 parts of a bamboo pulp. The preparation method is as follows: (1) uniformly mixing the mildew-proof agent, the bamboo pulp and the wet strength agent, and thenperforming hot-pressing forming and edge cutting to obtain a pulp molded product dry body; and (2) uniformly coating a spraying solution on the surface of the pulp molded product dry body, and performing drying to obtain the mildew-proof water-resistant seedling pulp molded product. The preparation method of the water-resistant mildew-proof seedling pulp molded product is green and environment-friendly, the product is easy to degrade, the white pollution problem brought by plastic products is effectively solved, the pressure of the ecological environment is reduced, the mildew-proof and water-resistant effects are remarkable, and thus the product can be used for material packaging and agricultural cultivation seedling cups, and has good application prospects.

The invention provides a water-absorbing degradable plastic bag. The bottom of the plastic bag comprises a surface wrapping layer, a water-absorbing core layer and a plastic bag body from inside to outside, wherein four edges of the surface wrapping layer are bonded with the plastic bag body by means of heating. As a highly water-absorbing resin layer is added to the bottom of an existing plastic bag and fixed to the bottom of the plastic bag through the surface wrapping layer, waste water in plastic flows down along the wall of the bag under the action of gravity, and is accumulated at the bottom of the bag and absorbed by the water-absorbing core layer, so that the whole plastic bag is kept dry, and food waste contained in the plastic bag is not easy to deteriorate and stink. Besides, by the aid of the added water-absorbing core layer and the surface wrapping layer, the bottom of the plastic bag, mainly used for bearing, is firmer and not easy to be damaged. The plastic bag body made of polyethylene modified materials can be naturally degraded, so that white pollution is reduced.

The invention provides a biological liquid mulching film and a preparation method thereof. The biological nutritional liquid mulching film comprises the following components by mass: 0.5 to 1.5 parts of chitosan, 2 to 5 parts of peach gum, 1 to 2 parts of lactic acid, 0.5 to 1.5 parts of yeast extract and 100 parts of water. The preparation method comprises the following steps: mixing the lactic acid and 50 parts of water, adding the chitosan, stirring, heating, dissolving, and preserving heat to obtain a transparent solution; heating the residual 50 parts of water, dissolving the peach gum until the material is transparent and adding the yeast extract to obtain a mixed solution; and mixing the transparent solution and the mixed solution, stirring and cooling to obtain the biological nutritional liquid mulching film. The biological nutritional liquid mulching film has high biocompatibility and stress resistance to facilitate healthiness of crops, has high film-forming property to facilitate cold resistance, drought resistance and moisture preservation, is rich in various nutrients required by the crops to facilitate growth of the crops, is convenient to use, saves a large quantity of labor, can be degraded automatically and avoids white pollution.

The invention provides a low-thermal-expansion-coefficient type waste plastic composite sleeper. The low-thermal-expansion-coefficient type waste plastic composite sleeper comprises 100 parts of baseresin, 35-55 parts of a thermal expansion coefficient modifier, 5-10 parts of a compatilizer, 30-60 parts of a flame retardant, 45-70 parts of a reinforcing filler, 0-1 part of an anti-ultraviolet additive, 0-2 parts of an antioxidant, 1.0-2.5 parts of a coupling agent, 0-3 parts of a lubricant and 0-4 parts of a foaming agent. The invention provides a method for overcoming the defects that thermoplastic resin is large in molding shrinkage, large in thermal expansion coefficient and the like, and the prepared plastic sleeper is low in thermal expansion coefficient. A large amount of waste plastic is used, so that the problems of white pollution and energy are solved to a certain extent, and meanwhile, the environment is protected; the thermal expansion modifier is utilized to lower the thermal expansion coefficient of the plastic composite sleeper, improve the molding shrinkage of the plastic sleeper and widen the application range of the plastic sleeper under harsh temperature environment conditions. The method is not harsh in process conditions, simple in steps and easy to implement.

The invention discloses a bio-based degradable meal box material and a preparation method thereof. The bio-based degradable meal box material is prepared from the following raw materials: straw powder, a hydrophobic auxiliary agent, a lubricant, a reactive auxiliary agent, a biodegradable high-molecular compound, an antioxidant, a grafting treatment auxiliary agent, a toughening compatible auxiliary agent and an antibacterial agent. The bio-based degradable meal box material disclosed by the invention can be effectively biodegraded, can be degraded by 72.3% within 60 days and can be completelydegraded within 144 days, and white pollution can be effectively solved. The straw powder is subjected to gelation, plasticization, grafting, oxidation resistance, coupling and antibacterial treatment to obtain the degradable meal box material with excellent performance, the problems that an existing straw powder bio-based degradable material is large in water absorption and moisture absorption and prone to powder removal can be solved, and the comprehensive performance is improved; the material has good antibacterial performance, the antibacterial performance is improved by adding an antibacterial agent into the material, and the modified chitosan has the best antibacterial effect.