41results about How to "Meet the requirements of ecological environment protection" patented technology

The invention relates to a ground brick and a production method thereof, in particular to a ground brick produced by using oil field sludge and the production method thereof. Matrix material of the ground brick consists of raw materials by weight proportion as follows: 50-70 percent of the oil field sludge, 10-25 percent of riversand, 15-25 percent of phosphoaluminate cement and 3-5 percent of hardener; the hardener consists of the raw materials by the weight proportion as follows: 20-30 percent of magnesia, 20-30 percent of calcium chloride, 20-30 percent of gypsum and 20-30 percent of lime. The ground brick of the invention has the advantages of high strength, low water absorption, low cost and no pollution which meets the requirement of the ecological environment protection and solves the problems of pollution and discharge of the oil field sludge.

The invention relates to a burn-free brick and a production method thereof, particularly to a burn-free brick produced with the Yellow River silt and a production method thereof. The burn-free brick is produced by the extrusion of press machines after mixing the raw materials at a weight ratio as follows: 50-70% Yellow River silt; 20-30% fluoride gypsum powder; 5-10% cement; 3-5% aluminum potassium sulfate and 2-5% construction-used acrylic rubber powder. The invention makes full use of waste fluoride gypsum and a large number of Yellow River silt and is energy-saving and emission reducing and can prevent environmental pollution to meet ecological environmental protection requirements. The burn-free bricks have the advantages of low cost, high strength and good comprehensive performance and each performance are much higher than the relevant national standards of bricks for construction. The production method of has advantages of simple process and convenient production.

The invention provides a polylactic acid / polycaprolactone three-dimensional porous composite monolithic column material and a preparation method thereof. The preparation method comprises the followingsteps: dissolving a certain amount of polylactic acid and polycaprolactone into a good solvent of the polylactic acid and the polycaprolactone; adding a certain amount of a poor solvent into the polylactic acid / polycaprolactone mixed solution to a cloud point to make the system change from a steady state to a metastable state; allowing the metastable-state system to stand until the polylactic acid / polycaprolactone solution spontaneously forms a three-dimensional pass-through porous structure to obtain a wet bulk material; and performing replacement, performing vacuum low-pressure drying to make the polylactic acid / polycaprolactone solidified to form the porous composite monolithic column material. The three-dimensional porous composite monolithic column material prepared by the technicalsolution provided by the invention has the advantages of excellent rapid mass transfer performance and chemical stability, a large specific surface area, easy chemical modification, no toxicity and biodegradability, meets the requirements of ecology and environment protection, and can be widely used in the fields of oil absorption, biomedical applications, drug controlled release, catalyst carriers, tissue engineering and the like.

The invention discloses hydrophobic flame-retardant epoxy resin and a preparation method thereof, and belongs to the technical field of preparation of functional polymer materials. The preparation method comprises the following steps: carrying out chemical bonding to connect hydroxyl silicone oil, graphene and DOPO type epoxy resin by taking the hydroxyl silicone oil as a water repellent agent andtaking the graphene and 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) as a fire retardant; and then carrying out curing and preparation to obtain the final product. The obtained epoxy resin has excellent hydrophobicity, fire resistance and mechanical property, the vertical combustion grade reaches V-0 grade, a surface contact angle is increased to be 107.6-117.5 degrees, the stretching strength is 49.5-53.9 MPa, the impacting strength is 6.8-12.6 kJ / m<2>, meanwhile, the hydrophobic flame-retardant epoxy resin has the characteristics of zero poisonousness and environmental protection, can be used in an outdoor or humid severe environment, and is wide in application prospect.

The invention discloses a livestock and poultry manure deodorant and relates to the field of livestock and poultry manure disposal. The livestock and poultry manure deodorant is composed of, by weight, 5 to 90 parts of sodium hydrogen peroxymonosulfate, 1 to 80 parts of potassium ferrate and 1 to 50 parts of zeolite powder. The deodorant has low cost and convenient use, can effectively sterilize and deodorize the livestock and poultry manure, has stable drug efficacy, is safe for livestock, poultry and human bodies, and meets the requirements of ecological and environmental protection.

The invention relates to a phosphorus-containing flame-retardant epoxy resin having undergone hydrophobic modification by silane, and a preparation method thereof, belonging to the field of preparation of high-performance high polymer materials. The preparation method comprises the following steps: adding 20 to 40 g of DOPO-VTS, 100 to 150 g of DOPO type epoxy resin, 0.8 to 1.6 g of dibutyltin dilaurate (DBTL) and 0.5 to 4 g of deionized water into a 250-mL round-bottom flask equipped with a condenser tube; carrying out a reaction at 80 to 110 DEG C under stirring for 2 to 6 h; and then carrying out a vacuumized reaction for 0.5 to 2 h so as to obtain the yellow gummy phosphorus-containing flame-retardant epoxy resin (DV-m-DE) having undergone hydrophobic modification by silane. The epoxy resin prepared in the invention has excellent hydrophobicity and flame resistance; the vertical combustion grade of the epoxy resin reaches V-0 grade; the surface contact angle of the epoxy resin is increased to 92.7 to 106.3 DEG; and the epoxy resin has the characteristics of excellent compatibility, nontoxicity and environment friendliness, can be applied to outdoor or wet severe environments and has wide application prospects.

The invention provides a method for preparing an insecticidal activity substance from secondary metabolism products of long shoot trichoderma strains. The method comprises the following steps of: step 1: performing liquid fermentation on the long shoot trichoderma strains capable of producing the insecticidal activity substance so as to obtain a culture solution containing insecticidal activity metabolism products; and step 2: performing a crude extraction operation on the obtained culture solution containing the insecticidal activity metabolism products so as to obtain a crude extract of the insecticidal activity substance. The invention further provides the application of the insecticidal activity substance prepared by the preparation method in the respects of preventing and treating bemisia tabaci and strawberry red spiders. The insecticidal activity substance and the preparation method and the application thereof disclosed by the invention have the advantages that preventing and treating trialeurodes uaporariorum and the strawberry red spiders through the strains are safe and reliable, phytotoxicity is not produced, human health is not endangered, and environment is not polluted.

The present invention relates to floor tile, and is especially floor tile made of oil field sludge and curing agent and its production process. The floor tile has the main material comprising oil field sludge 30-60 wt%, river sand 15-40 wt%, cement 15-30 wt%, flyash 0-35 wt% and curing agent 1-8 wt%. The floor tile of the present invention has high strength and no pollution and reaches the requirement of protecting ecological environment. The present invention solves the problem of pollution caused by oil field sludge, and the floor tile producing process is simple.

The invention discloses a novel high-load abnormal-shaped PCCP (prestressed concrete cylinder pipe) and a manufacturing method. The improved design is performed on a geometric structure of a pipe bodyin combination with the stress condition in actual application of the pipe body. The thickness of the upper end of the cross section of the pipe body and the pipe wall of the bottom of the pipe bodyis larger than the thickness of the pipe walls of the two sides of the middle of the pipe body, a wide and flat base is disposed at the bottom of the pipe, and the ring stiffness and the top surface bearing capability of the pipe body are greatly improved. The manufacturing method includes the steps that a pipe core is made by means of a traditional PCCP production process, and after wire wrappingof the outer wall of the pipe core is finished, an outer protective layer of the pipe is formed by concrete pouring through a dedicated mold. By means of the novel high-load abnormal-shaped PCCP andthe manufacturing method, resources are saved, eco-environment protection is achieved, construction can be performed in an excavation direct-burial mode or in a non-excavation jacking, running is safeand reliable, the service life is long, especially, conveyed drinking water is not contaminated, the pressure sealing property is good, ultra-large-diameter production is allowed, and the pipe can beused for urban underground pipe galleries and sponge city construction as well as fluid conveying.

The invention relates to a multi-sound-channel plastic-plate erhu. A neck comprises a phoenix-shaped neck tip stick, a tuning peg erecting stick and a tubular stick which are sheathed together. Sound outlets which are communicated with the cavity of the tubular stick are drilled in sheathed sections of the tuning peg erecting stick and the tubular stick. A fine tuning device is installed at the sheathed sections. The lower section of the tubular stick is inserted into a sound box. A rectangular hole is arranged in the section of the tubular stick in the sound box. Air which is excited to vibrate in the sound box can enters the cavity of the tubular stick from the rectangular hole. Generated resonant sounds come out from the sound outlets in the tubular stick. The skin of the sound box is a thin plastic plate. Pairs of small holes are symmetrically arranged in the circumference of the thin plastic plate and are used as sound outlets. A spring is fixedly arranged at the central part of the internal surface of the thin plastic plate. A thin plastic disc is connected onto the moving end of the spring. By taking a vibration balance position of the thin plastic disc as a starting point, a front resonant box of the sound box is formed between the vibration balance position and the thin plastic plate, and a rear resonant box of the sound box is formed between the vibration balance position and a sound window. Compared with the prior art, the texture of the skin is even, the skin is easy to install, the probability of generating impure sounds is small, the skin is not influenced by climate and temperature, multiple sound channels can be formed and a fine-sounding effect is taken during playing.

The invention discloses epoxy silicone oil modified phosphorus-containing flame-retardant epoxy resin and a preparation method thereof, belonging to the preparation field of high-performance high-polymer materials. According to the preparation method, epoxy silicone oil is taken as a water repellent agent, KH550 is taken as a compatilizer, and the epoxy silicone oil, KH550 and DOPO-type phosphorus-containing flame-retardant epoxy resin are connected together through chemical bonding by virtue of a vacuum stirring manner and are cured so as to prepare the epoxy silicone oil modified phosphorus-containing flame-retardant epoxy resin. The obtained epoxy silicone oil modified phosphorus-containing flame-retardant epoxy resin has excellent compatibility, hydrophobicity, flame retardance and mechanical properties, the vertical burning grade reaches the V-0 level, a surface contact angle is increased to 95.1-99.3 degrees, the tensile strength is 41.5-55.5MPa, and the impact strength is 2.7-14.6kJ / m<2>; and meanwhile, the epoxy resin has the characteristics of no toxicity and environmental friendliness, can be applied to outdoor or moist severe environments, and has wide application prospects.

The invention relates to the field of textile auxiliary agent, especially relates to a method for preparing a low temperature crosslinking resin for textiles. The method is carried out according to the following steps: mixing raw materials, stirring and controlling temperature, adding a monomer mixture, adding a monomer mixture and discharging. The method has high environmental performance, and can effectively save energy and achieve energy saving and environmental protection.