95results about How to "Environmentally safe" patented technology

The invention relates to a waterborne polyurethane coating glove and production process thereof. The production process comprises the following steps: a. preheating, i.e., putting a fabric glove core on a hand mold and preheating; b. dipping in a coagulator, wherein the coagulator is volatilizable organic acid; c. baking; d. dipping in glue liquid, wherein the ingredients of the glue liquid comprise waterborne polyurethane and water; e. drying; and f. demolding. The waterborne polyurethane coating glove is structurally made by coating the waterborne polyurethane coating on the fabric glove core. According to the invention, volatilizable organic acid is used as the coagulator instead of a calcium salt in the production process; organic acid can be volatilized and recycled during the production, so that the washing step is omitted; and a mechanical foaming waterborne polyurethane coating glove can be made. The waterborne polyurethane coating glove has the characteristics of excellent performance, soft manufactured product, wear resistance, simple production process and wide market prospect, and is environment-friendly, safe.

The invention relates to immobilized microspheres for remediation of petroleum contaminated soil, a preparation method thereof and applications thereof. The immobilized microspheres are spheroidal, have internal apertures and have diameters of from 2.5 to 3.0 millimeters. The immobilized microspheres comprise sodium alginate as an embedding material and attapulgite as an adsorbent for adsorptions of petroleum hydrocarbon degrading bacteria and nutrient elements. The preparation method of the immobilized microspheres comprises embedding petroleum hydrocarbon degrading bacteria and nutrient elements through sodium alginate as an embedding material and attapulgite as an adsorbent, and carrying out a series of preparation steps of high density bacteria liquid suspension, immobilization and balling, and enrichment culture to obtain the immobilized microspheres. The immobilized microspheres prepared through the preparation method provided by the invention have favorable aperture conditions and adsorption performances, thereby having strong load capabilities. The immobilized microspheres provide good internal survival environments for petroleum hydrocarbon degrading bacteria, thereby having strong environmental impact resistance capabilities. The immobilized microspheres have the advantages of environmental protection, safety, good biocompatibility and wide foreground of application in bioremediation for petroleum contaminated soil.

The invention relates to a conductive coating composition. The conductive coating composition comprises the components in parts by weight: 65-100 parts of high molecular resin, 0.001-5 parts of conductive nano-zinc oxide, 110-200 parts of solvent and 0-30 parts of curing agent. The electrical resistivity of a conductive coating is 10<-4> to 10<3> omega.cm, the conductive nano-zinc oxide is light-colored, and the addition amount is small, thus the obtained conductive coating is high in transparency, and the light transmittance reaches as high as 96%.

The invention relates to copolyester sheets or a copolyester fiber, which comprises terephthalic acid, m-phthalic acid, glycol and 2-methyl-1, 3-propanediol; the mol ratio of dibasic acids to diatomic alcohols is 1 to 1.7-2.4. The preparation method of the copolyester sheet or fiber comprises the following steps: (1) the terephthalic acid, the m-phthalic acid, the glycol and the 2-methyl-1,3-propanediol are mixed for esterification for 1 to 5 hours together with a catalyzer and a heat stabilizer at 220 to 275 DEG C under the pressure of zero to 0.5MPa; (2) pre-polycondensation follows; the pressure is reduced and the temperature is raised to complete polycondensation, thus getting the copolyester sheets; the copolyester sheets are dried in vacuum, thus getting dry copolyester sheets capable of spinning; and the dry copolyester sheets are spun to get the copolyester fiber. The dyeing behaviour of the copolyester fiber is improved; and the copolyester fiber has the characteristics of resisting roughing and pilling and high contractibility. The preparation method is designed rationally and can be industrialized easily, which is safe for the environment.

The invention discloses a self-lubricating treating agent composition which contains water, colloidal silicon dioxide, sodium silicate, lubricant, inorganic inhibitor, silane coupling agent and organic resin. The invention also discloses a hot aluminum / zinc-plated sheet which comprises a hot aluminum / zinc-plated sheet substrate and a coating attached to the surface of the substrate, wherein the coating is formed by the self-lubricating treating agent composition. The invention the invention also discloses a preparation method of the hot aluminum / zinc-plated sheet, which comprises the following steps: preparing the self-lubricating treating agent composition into a coating solution, coating the coating solution on the hot aluminum / zinc-plated sheet substrate, and curing. The coating formed by curing the self-lubricating treating agent composition has favorable corrosion resistance, heat resistance, water resistance and adsorptivity, and has especially excellent fingerprint resistance and self-lubricating property.

The invention discloses an anti-static, anti-corrosion, waterproof and stretching-resistant insulated cable. The anti-static, anti-corrosion, waterproof and stretching-resistant insulated cable comprises a cable body. The cable body comprises cable cores, a cable core protective layer, an insulating layer, a shielding layer and an outer jacket. The cross section of the cable core protective layer is of a circular structure, and the multiple evenly-arranged cable cores are arranged in the cable core protective layer and separated through PVC plastic connecting rods; a plurality of current guide cores are arranged outside the cable core protective layer and are tangent with the cable core protective layer; the insulating layer is arranged outside the cable core protective layer; waterproof fillers are arranged in a gap between the insulating layer and the cable core protective layer; the shielding layer is tightly extruded on the insulating layer and internally provided with the multiple evenly-arranged current guide cores; a breakdown resistant layer, a steel core protective layer and a waterproof layer are sequentially extruded on the shielding layer from inside to outside; an armor layer is extruded outside the waterproof layer, the outer jacket is arranged outside the armor layer, and a graphite layer is arranged between the armor layer and the outer jacket. The anti-static, anti-corrosion, waterproof and stretching-resistant insulated cable has the advantages of being reasonable in structural design, high in anti-static capacity, good in anti-corrosion performance and the like.

A wood-based loss circulation material is formed with a density matched to the density of the drilling fluid to which the loss circulation material will be added. The material is formed from sawdust or fiber pressed under high pressure into high-density pellets. The resulting pellets are brittle, and may be crumbled and screened into particles of an appropriate size for a particular drilling fluid application. Different particle sizes may be employed to prevent seepage or fill voids during the well drilling process. The particles do not disassociate into their constituent materials when in the drilling fluid, and thus maintain their density during use.

The invention provides a flame-retardant room-temperature vulcanized silicon rubber and a preparation method thereof. The flame-retardant room-temperature vulcanized silicon rubber is prepared from 100 parts of alpha, omega-dihydroxy polydimethyl siloxane, 3-10 parts of reinforcing filler, 0-15 parts of dimethyl silicon oil, 60-100 parts of flame retardant agent, 1-3 parts of cross-linking agent,and 0.5-3 parts of catalyst, wherein the flame retardant agent is compounded based on melamine and one or two of lipophilic magnesium hydroxide and lipophilic aluminum hydroxide. In production and solidification of the flame-retardant room-temperature vulcanized silicon rubber, toxic substances or pungent odors are not generated, so that the preparation method is environmentally friendly and safe.The flame-retardant room-temperature vulcanized silicon rubber has good flame-retardant performance, mechanical property and processing performance, in addition, the raw materials of the flame-retardant room-temperature vulcanized silicon rubber have a wide source range and are low in price. The preparation method of the flame-retardant room-temperature vulcanized silicon rubber is easy and is low-cost.

The invention relates to a method for treating and utilizing agricultural solid waste through aerobic high-temperature hydrolysis and fermentation, which comprises the following treatment steps: a, mixing shorn and crushed crop straws with livestock / poultry dung, squeezing the mixture to carry out liquid-solid separation, soaking the solid residue obtained in the first squeezing procedure, and further squeezing to carry out liquid-solid separation; b, mixing the liquids obtained in the two squeezing procedures in the step a, inoculating with active sludge, hydrolyzing and fermenting the mixed liquid in the presence of hot air for a fermentation period of 1-10 days, carrying out vacuum concentration, and cooling to obtain a compound microbial inoculum product; and c, hydrolyzing and fermenting the squeezed residue obtained in the step a in the presence of hot air, drying in the presence of hot air, cooling, and bagging to obtain the low-humification stable-state carbon source organic substance product. By fully using a large amount of agriculturally-produced crop straws and large-scale produced livestock / poultry dung, the method can be used for recycling multiple kinds of agricultural organic waste, thereby changing the waste into valuables, and reducing the possible secondary environment pollution.

The invention relates to a special type water-based epoxy floor paint as well as a preparation method and an application thereof. Specifically, the invention discloses a dual water-based epoxy floor paint product containing a first container and a second container, wherein the first container contains a component A which comprises 10-50 parts by weight of a modified water-based epoxy curing agent, 25-70 parts by weight of a pigment filler, 0.01-10 parts by weight of a dispersant, 0.01-5 parts by weight of an organic silicon type defoaming agent and 0.01-5 parts by weight of an optional wetting leveling agent; and the second container contains a component B which comprises 60-150 parts by weight modified water-based epoxy resin. The invention also discloses a preparation method and an application of the dual water-based epoxy floor paint product. The dual water-based epoxy floor paint has the characteristics of being environment-friendly and safe, and being good in storage stability, good in coating property and easy in construction, a paint film after coating is high in hardening speed, and the obtained paint film has excellent weathering resistance and chemical resistance.

An anti-fog anti-haze high-moisture-absorption mask and a production method thereof are provided. The production method comprises: 1) producing a hydrophilic resin steeping liquor; 2) producing a hydrophilic resin modified middle layer material; 3) using polyolefin fiber cloth base as a hydrophobic inner layer material, the hydrophilic resin modified middle layer material as a hydrophilic middle layer material, and small-bore melt-sprayed filter cloth as an anti-haze outer layer material, and selecting materials; 4) sewing the materials via sewing threads to obtain the anti-fog anti-haze high-moisture-absorption mask. The production method of the anti-fog anti-haze high-moisture-absorption mask has the advantages that the hydrophobic inner layer is in direct contact with the facial skin sothat the face can be kept dry and cool; the hydrophilic middle layer is positioned outside the hydrophobic inner layer and is effective in absorbing moisture in exhaled gas, thereby relieving stuffiness and wetness in mouth and nose and preventing fogging of glasses; the anti-haze outer is in contact with air, and the small-bore melt-sprayed cloth base is effective in decreasing PM2.5 particulatematters in haze air; the production method is simple, and the mask has light weight, helps breathe, and is highly functional and highly comfortable.

The invention relates to a cationic dye deep dyeing copolyester at normal pressure and a method for producing the same, and mainly relates to copolymerization of biologically prepared ethylene glycol, a monomer of dimethyl terephthalate, an alkali salt of isophthalic acid glycol ester-5-sulfonic acid and PEG1000. When the prepared copolyester is co-mixed with the common PET for spinning, the fluidity and the spinnability are both improved; and the deep dyeing of cationic dyes at normal pressure can be adopted, so that the defect that the PET can only be dyed by disperse dyes at high temperature and high pressure is overcome.

The invention discloses a waste alkali solution recovery method, which is mainly applicable to recovery of waste alkali solution generated during dipping and pressing of pulp in viscose fiber production, and is also applicable to recovery of alkali solution generated during papermaking, pulping, dying, spinning and the like in textile industries. Through procedures of two-stage coagulation, two-stage precipitation and filtration, oxidization, adsorption and the like, the waste alkali solution recovery method ensures continuity of production, reduces filtration difficulties, reduces energy consumption, and enables the production to be more stable. After the alkali solution is treated by the method, the content of impurities in the alkali solution is less, and the chromaticity of the alkali solution is low, thereby realizing the aim of recycling waste alkali. According to the method, equipment investment and energy consumption are low, and operation expense is low; and the method has the characteristics of environmental friendliness, safety and high production efficiency, has remarkable benefits, and can reduce the pollution of the waste alkali on environment.

The invention relates to a method for preparing 2-amino-4-acetaminoanisole, and the method belongs to the technical field of hydrogenation reduction reaction of 2-nitro-4-acetaminoanisole. In a reaction system with water as a solvent, under a condition of the presence of an acid binding agent and a catalyst, 2-nitro-4-acetaminoanisole is subjected to catalytic hydrogenation reduction into 2-amino-4-acetaminoanisole, solid-liquid separation is performed to recycle a catalyst, and cooling crystallization is performed to obtain 2-amino-4-acetaminoanisole; compared with a conventional method with an organic solvent as a reaction solvent, the production method is more environmentally friendly and lower in cost under conditions of maintaining the yield and the product purity.

The invention discloses an environment-friendly sound insulating high speed train floor structure, and relates to the field of railway vehicle floors. A free sticking elastic damping material is sprayed on the upper surface of a web plate of a floor aluminum profile; the inner chamber of the floor aluminum profile is filled with a polyurethane sound absorption material; the upper surface of a top plate of the aluminum profile and lower supports are bonded with the sticking elastic damping material; the upper part of the sticking elastic damping material is bonded with a restraint layer aluminium plate; the upper part of the floor aluminum profile is bonded with the lower supports; the lower supports and upper supports are connected through rubber cushions; a cold-proof material is laid between the restraint layer aluminium plate and a sound insulation cushion; the sound insulation cushion and an aluminium plate form an entirety, and then the entirety is bonded with the elastic supports; the upper part of the aluminium plate is bonded with foaming aluminium; the upper part of the foaming aluminium is bonded with the aluminium plate. According to the invention, through the improvement of the structure of the floor, the integral rigidity of the system is reduced, and the sound insulation amount is improved, through the simulation of the test result, the thickness of the plate is specified, the vibration damping noise reducing performance can be optimized, and meanwhile the development requirement of light weight of the vehicle body can be met; on the aspect of vehicle body floor material selection, the novel environment-friendly energy-saving material is preferentially selected.

The invention discloses a method for preparation of high-concentration secularly-stable graphene water dispersion by reduction of graphene oxide with gellan gum polysaccharide. The method includes the following steps: (1) dispersing gellan gum in deionized water for preparing a gellan gum solution; (2) adding the graphene oxide to the gellan gum solution of the step (1) to form a gellan gum and graphene oxide mixed solution, using an alkaline liquor to adjust the pH of the mixed solution to 10-12, then heating; (3) centrifuging, washing and drying the reaction liquid obtained in the step (2) to obtain graphene, and then dispersing the graphene in the deionized water to form the graphene water dispersion. The graphene water dispersion can keep stable in a long time. The reducing agent gellan gum used in the method is green, environmental-friendly and free of toxicity, the used method has the advantages of simple operation and realization of mass production. The method provides a new way for preparation and functional development and application of graphene nano materials.

The invention discloses an environment-friendly baking-free brick prepared from sludge and furnace slag. Raw materials include: sludge, domestic incinerator slag, cement, a curing agent and water in amass ratio of (35-40): (10-15): (40-50): (5-10). The preparation method comprises the following steps: carrying out pyrohydrolysis and thermophilic anaerobic digestion treatment on raw sludge, and dehydrating to obtain dehydrated sludge; adding a deodorant into the dehydrated sludge, naturally deodorizing and airing, then crushing, sieving with a 100-mesh sieve to obtain sludge powder, and sieving the domestic incinerator slag with a 50-mesh sieve to obtain slag particles; and mixing the sludge powder and the slag particles with Portland cement, a curing agent and water, putting the obtainedmixture into a mold, performing extrusion and compression molding, and performing maintenance in air so as to obtain the environment-friendly baking-free brick. Waste sludge and furnace slag can be used as raw materials to prepare the environment-friendly baking-free brick which is stable in property, free of pollution and capable of meeting the strength requirement.

The invention belongs to the preparation field of nano-sized iron oxide and particularly relates to an absorption agent for repairing water polluted by cadmium and a preparation method of the absorption agent.The preparation method includes the steps of firstly, preparing excoecaria cochinchinensis leaf extract; secondly, under room temperature, slowly dripping ferrous sulfate solution of 0.2mol / L into the excoecaria cochinchinensis leaf extract obtained in the first step, and well mixing to obtain mixed liquid; thirdly, feeding compressed oxygen into the mixed liquid obtained in the second step at the flow speed of 10-50ml / minute, and performing oscillatory reaction for 1 hour; fourthly, performing suction filtration on the reaction liquid in the third step after the reaction, washing with deionized water until the pH of leachate is constant, freeze drying the solid obtained by filtration for more than 8 hours, grinding, and sieving with a 200-mesh sieve to obtain the nano-sized iron oxide.The preparation method has the advantages that the method is environmental friendly in raw material, low in cost and free of environmental pollution, the synthesized nano-sized iron oxide can evidently remove the cadmium in the water polluted by the cadmium, and the removing rate reaches up to 82%.

The invention relates to high-performance water-based heavy anti-corrosion paint and a preparation method thereof, and belongs to the technical field of water-based anti-corrosion paint. The water-based heavy anti-corrosion paint comprises water-based epoxy zinc rich primer, water-based epoxy graphene-modified intermediate paint and water-based polyurethane finishing paint, wherein an intermediatecoating uses the water-based epoxy graphene-modified intermediate paint; properties, such as an extra-large specific surface area, good barrier property, high chemical stability and good electrical conductivity, of graphene are utilized, so the overall performance of the anti-corrosion compound coating is greatly improved, for example, an adhesive force of the coating to a base material is reinforced, the abrasive resistance and the anti-corrosion property of the paint are improved, and the coating has the characteristics of environmental protection and safety, and no secondary pollution andthe like. Three types of the paint are compounded for using, a thickness of a paint film can be greatly reduced under the precondition without affecting the anti-corrosion property, and the requirements of lightweight coating are satisfied. The preparation method of the water-based heavy anti-corrosion paint is simple, and suitable for industrial production, and raw materials are easily obtained.

The invention relates to a microbial nutrient for repairing chromium-contaminated soil and sediments. The microbial nutrient is prepared from soybean cake powder and molasses in a certain proportion. The microbial nutrient disclosed by the invention is added to the soil or sediments, so that large-scale growth of indigenous microorganisms in the soil or sediments is promoted; poisonous and movable Cr (VI) in the soil or sediments is reduced into low-toxicity Cr (III) which is not prone to move through the reduction effects of the microorganisms; meanwhile, the microorganisms fix trivalent chromium through processes of adsorption, precipitation and the like, so that the mobility and the bio-availability of the trivalent chromium are reduced, and the trivalent chromium is prevented from being re-oxidized into hexavalent chromium. The microbial nutrient has the advantages of being low in cost, good in effect, easily-available in material, convenient to use, environment-friendly, and the like.

An attenuated live vaccine of eel vibrio for preventing the sensitive fish from being infected by wild vibrio and its preparing process are disclosed.

The invention relates to the technical field of coating, and particularly relates to high-strength wear-resistant waterborne epoxy floor coating and a preparation method thereof. The waterborne epoxyfloor coating is prepared from a component A and a component B; the component A is prepared from the following raw materials: 30-50 parts of waterborne epoxy resin and 10-30 parts of water; the component B is prepared from the following raw materials: 20-50 parts of waterborne epoxy hardener, 10-30 parts of water, 10-60 parts of filler, 2-6 parts of wetting agent, 0.2-0.4 part of anti-foaming agent, 5-15 parts of calcium sulfate whisker, 1-5 parts of kieselguhr and 0.5-2 parts of nano cellulose. The waterborne epoxy floor coating has relatively high impact resistance and wear resistance without obviously increasing the production cost; the preparation method is simple and practical and easy to operate and has great economic and practical value.

The invention provides a water-based conductive coating composition. The water-based conductive coating composition contains conductive particles, water-soluble resin, a curing agent and a solvent, wherein the conductive particles comprise spherical conductive particles and sheet-shaped conductive particles; based on the conductive particles, the content of the spherical conductive particles is 30-70wt%, and the content of the sheet-shaped conductive particles is 70-30wt%; based on the total weight of the conductive coating composition, the content of the conductive particles is 2-26wt%, the content of the resin is 5-60wt%, the content of the curing agent is 0.1-8wt%, and the content of the water is 20-70wt%. The invention also provides a preparation method of the conductive coating composition. The conductive coating composition provided by the invention has the beneficial effects that the conductive coating composition has weak corrosivity to substrates, therefore the conductive coating composition can not cause substrate burst when being used; the water-soluble resin and the water basically do not irritate human bodies or environments, therefore the conductive coating composition provided by the invention also has the characteristic of environmental protection.

The invention discloses a living microbial immobilization microsphere and a preparation method and application thereof. The method comprises the steps of microbial immobilization of a carrier, bacterial liquid suspension colonization, microbial active particles, proliferation and reculture and the like. The microsphere is spherical, has pores in the microsphere, has the diameter of 3.0-4.0 mm andthe specific gravity of 1.10-1.20 g / cm<3>, is alkalescent, and has good sedimentation performance and mechanical strength. The microsphere not only can play the chemical adsorption effect of the carrier on cadmium, but also can improve the growth and propagation environment of active microbes, thereby improving the extracellular adsorption and intracellular accumulation effect of active bacteria on cadmium. The maximum adsorption-accumulation amount in the range below initial Cd2 + concentration 250 mg / L can reach 158.77 mg / g. The living microbial immobilization microsphere has the advantagesof adopting cheap and easily available raw materials and being strong in process operability, environmentally friendly, easy to recover remarkable in treatment effect and the like, and has wide application prospect in the biological treatment process of heavy metal polluted water bodies.

In a method for sealing an insulating material for construction applications, the insulating material is sealed with a material sheet including an ionomer so as to provide a vapor retarder for the insulating material.

The invention belongs to the field of biotechnologies of dairy cow veterinary drugs, and particularly relates to a Chinese and western medicine compound for preventing and treating recessive mastitis of dairy cows. The compound is prepared from the following Chinese and western medicinal materials by weight: 10-15g of levamisole hydrochloride, 25-30g of taurine, 55-60g of honeysuckle, 45-50g of angelica sinensis, 25-30g of orange peel, 15-20g of radix saposhnikoviae, 15-20g of radix angelicae, 20-25g of fritillaria thun-bergli, 20-25g of frankincense, 20-25g of myrrh, 25-30g of radix paeoniae rubra, 15-20g of manis pentadactyla and 10-15g of liquorice. The Chinese and western medicine compound for preventing and treating recessive mastitis of dairy cows is prepared on the basis of years of clinical experience, has the effects of clearing away heat and toxic materials, promoting blood circulation to remove blood stasis and eliminating swelling to promote lactation, and has the advantages of being residue-free, pollution-free, environment-friendly, safe, simple in production process and convenient to use.