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781results about How to "Environmental protection is good" patented technology

Edible collagen food packaging film and preparation method thereof

The invention provides an edible collagen food packaging film and a preparation method thereof. The preparation method comprises the following steps: firstly, stirring a 5-30wt% collagen solution and a 0.1-3wt% modifier solution at the temperature of 30-60 DEG C to react for 30-60 minutes, thus obtaining a compound solution; then adding a plasticizer and an auxiliary additive into the compound solution, then continuing to stir for 20-40 minutes at the temperature of 30-60 DEG C so as to obtain a mixed solution; and pouring the mixed solution in a die, molding, drying for 5-15 hours at the temperature of 40-80 DEG C, so as to obtain the edible collagen food packaging film. The edible collagen food packaging film has the advantages of better mechanical property, better heat stability, better moisture barrier property, safety, effectiveness and no side effect; wastes can be degraded and do not cause environment pollution; and the edible collagen food packaging film can be widely applied to the fields of various food packaging and medicament packaging, and has a good market application prospect.
Owner:SICHUAN UNIV

Sealing joint strip and application method thereof

The invention provides a sealing joint strip which is used for heat bonding of a solar battery assembly or a flat-plate solar heat collector with a border. The sealing joint strip is characterized by comprising the following components by mass: 100 parts of thermoplastic polymer elastomer and 0.1 to 10 parts of a silane coupling agent. During utilization, the sealing joint strip can be pressed at a position where the solar battery assembly or the flat-plate solar heat collector and the border joint in the assembling process of a solar module and is then laid aside or treated at a certain temperature for a period of time so as to finish heat bonding, which allows good sealing and fixing effects of the sealing joint strip to be obtained. The application method for the sealing joint strip is characteristic of simpleness, high efficiency and environment friendliness. The sealing joint strip and the application method can also be used for the flat solar heat collector.
Owner:DSM SUNSHINE SOLAR TECH (SUZHOU) CO LTD

EPS (expandable polystyrene) fireproof thermal-insulating plate

The invention discloses an EPS (expandable polystyrene) fireproof thermal-insulating plate which is made by subjecting master batch particles of expandable polystyrene to steam prefoaming, well mixing the premade flame retardant slurry and the prefoamed polystyrene particles according to the weight ratio of 1:2-4, drying, moulding with steam, cooling and demoulding, and cutting. The EPS fireproof thermal-insulating plate reaches the fire rating level A2, the tensile strength is improved, the original advantages of low heat conductivity, fine waterproofing and the like are retained, and the overall process is pollution-free and highly environment-friendly.
Owner:CHONGQING LONGZHE HIGH TECH MATERIAL

Multiple helmholtz resonator parallel cellular sandwich wood sound absorption plate

The invention relates to a multiple helmholtz resonator parallel cellular sandwich wood sound absorption plate, belonging to the field of sound absorption technologies. The invention solves the problems of small chamber volume ratio, narrow sound absorption frequency band and poor sound absorption effect in the traditional sound absorption panels. Technical essential is characterized in that a sandwich layer is a cellular sandwich layer; the cellular sandwich layer is formed from splicing a plurality of cylinder bodies with hexagonal cross sections; an inner cavity of each hexagonal cylinder body is a cell cavity chamber; the chamber volume ratio of the sandwich layer is larger than 90%; the area of perforation shape surrounded by contour lines of each perforation is less than a half of the hexagonal area of corresponding sandwich layer; and each small through hole on a panel is communicated with the cell cavity chamber at the corresponding position of the sandwich layer. The invention has wider sound absorption frequency band and better medium high frequency sound absorption performance, and the sanding wave tube method sound absorption coefficients respectively reach 0.8, 0.9 and 0.7 at 500Hz, 1000Hz and 2000Hz. In addition, the invention also has the characteristics of light weight, high ratio of strength to weight, good decorative effect, and the like; and wood resources can be saved, preparation process is simple, and cost is low.
Owner:NORTHEAST FORESTRY UNIVERSITY

Automatic running and pulling system of oilfield workover string

The invention relates to an automatic running and pulling system of an oilfield workover string, which comprises a blowout preventer, fixing slips, an oil pipe / sucker rod guide mechanism, an oil pipe / sucker rod locating mechanism, an oil pipe / sucker rod elevator component, a mechanical arm component, hydraulic clamps, a hydraulic clamps bracket, a control system, a base component and a string bent, wherein the mechanical arm component and the hydraulic clamps bracket are installed on the base component and are connected through a linkage component to carry out linkage movement, and the string bent is arranged on the side surface of the mechanical arm component and moves in match with the mechanical arm component. With the adoption of the automatic running and pulling system of the oilfield workover string, the automation of movements of snatching up, butt joint, clamping, upper unloading, elevating, lowering, arrangement and the like can be realized, manual string running and pulling operation at a wellhead is replaced, an equipment mechanism is simplified as much as possible, and an operation program is optimized.
Owner:崔诗光

High-oxygen barrier property high-strength polyolefin heat conduction pipe and preparation method thereof

The invention provides a high-oxygen barrier property high-strength polyolefin heat conduction pipe and a preparation method thereof. The high-oxygen resistance high-strength polyolefin heat conduction pipe comprises, by weight, 100 parts of polyolefin resin, 0.1-5 parts of graphene slice layers, 0.1-15 parts of a compatilizer and 0.01-0.2 parts of an anti-oxidant. The graphene slice layers are uniformly distributed in the polyolefin resin in a ring way around a pipe central axis as a center. Through use of the graphene slice layers and a rotary core rod mouth mold, a polyolefin crystallization degree is high, a lot of oriented crystals are formed and pipe mechanical properties, heat conduction and heatproof performances are obviously improved. The graphene slice layers are uniformly distributed in the pipe in a ring way so that graphene slice layer obstruction performances are greatly improved and thus the good oxygen barrier property is kept under the condition of a very small amount of an anti-oxidant.
Owner:TIANJIN KINGFA NEW MATERIAL

Preparation process, product and application of new plastic

The invention provides a process for preparing a new plastic, which comprises the following steps: (1) preparing raw materials; (2) weighing and proportioning the raw materials; (3) mixing PVC powder, stabilizers, packing, plasticizers and other additives, then carrying out high-speed kneading on the obtained mixture, and preplasticizing the mixture so as to obtain a pre-plasticized mixture; (4) mixing the pre-plasticized mixture with TPU particles, carrying out banbury mixing on the obtained mixture under the condition of gradient temperature control so as to obtain colloidal products; (5) carrying out double-screw granulation on the obtained colloidal products; and (6) carrying out sorting, dehydration and packing on the granular products obtained in step 5 so as to obtain the new plastic. The process is simple, the conditions of the process are easy to control, and the process is suitable for large-scale production. The invention also provides a new plastic, which has the characteristics of high resistance to wear and scrape, high elasticity, easy recovery, high flame retardance, ultraviolet resistance, freezing damage (caused by low temperature in the north) resistance, environmental protection, soft handfeel and stick resistance, and the like; and the new plastic can be applicable to wire and cable compound.
Owner:GUANGDONG OMG TRANSMITTING TECH CO

Bamboo fiber composite base material and method for manufacturing automotive interior trim part

The invention relates to a composite material for manufacturing an automotive interior trim part. The bamboo fiber composite base material for manufacturing the automotive interior trim part is prepared by taking thermoplastic synthetic fibers (polypropylene PP, polyethylene PE or polyester PET and the like) as a bonding substrate and bamboo fibers as a reinforcing material through hot pressing. The bamboo fiber composite base material is characterized in that the bamboo fibers are prepared by sawing natural bamboo into pieces with length required by production, removing parenchyma from the bamboo by mechanical, physical, chemical and biological methods and directly extracting vascular bundle bamboo fibers from the bamboo, and have the length of 60 to 150mm, the diameter of 0.3 to 1.5mm, the strength of 60 to 120MPa and the water content of 10 to 12 percent. The automotive interior trim part can be subjected to press forming when the bamboo fiber composite base material covers artificial leather, leather or a knitted or non-woven fabric for surface decoration.
Owner:喻云水

Pure cotton bleached thermal smelting adhesive lining with extremely low washing shrinkage and production method thereof

The invention discloses a pure cotton bleached thermal smelting adhesive lining with extremely low washing shrinkage. The adhesive lining is characterized in that the warp-wise and zonal washing dimensional change rate is larger than or equal to minus 0.5%; the quantity of the formaldehyde released by the interlining is less than or equal to 35mg / kg; and the peeling strength is larger than or equal to 12N; the warp-wise and zonal dry heat dimensional change rate is larger than or equal to minus 0.8%. The production method of the invention comprises the following steps in sequence: overedging,singeing, bleaching, stoving, re-bleaching, liquid ammonia finishing, shrink resistant finishing, powder point coating and compressive shrinkage. The invention has the following advantages: the warp-wise and zonal washing dimensional change rate is large; the peeling strength is high; the environmental-friendly performance is good; and the production method can be easily operated.
Owner:曹平

High strong adhesive and method for preparing same

The powerful adhesive includes neoprene, grafting monomer, thickener, dispersant, adhesion promoter, catalyst, antioxidant, solvent, stuffing, etc. The present invention also discloses the preparation process of the adhesive, and the preparation includes introducing grafting monomer to neoprene molecule chain to raise the adhesion strength, selecting proper adhesion promoting resin to increase the initial adhesion force, and adopting mixed solvent to form high adhering performance. The adhesive has high solid content and excellent environment protecting performance, and has also excellent antiageing performance, high resistance to heat, oil, chemical and corrosion, high weather resistance, good mildew-proof performance, antibiotic performance, etc. and may be used for adhering timber, concrete, rubber, metal, gypsum board, brick and other building material.
Owner:GUANGZHOU GLORYSTAR CHEM

Composite flame-retardant expandable polystyrene particles and preparation technology thereof

Disclosed are composite flame-retardant expandable polystyrene particles and a preparation technology thereof. The particles are prepared from the following components of: by weight, 100 parts of styrene monomer, 100-150 parts of water, 1-10 parts of expandable graphite, 1-12 parts of a phosphorus compound, 0.1-0.5 part of white oil, 0.1-0.5 part of polyethylene wax, 0.05-0.2 part of dicumyl peroxide, 0.2-0.8 part of benzoyl peroxide, 0.1-0.4 part of polyvinyl alcohol, 1.1-2.1 parts of tricalcium phosphate and 8-12 parts of pentane. By the addition of a composite fire retardant of expandable graphite and the phosphorus compound before polymerization of styrene, adverse influence of the fire retardant on performance of the product is reduced; expandable graphite and the phosphorus compound are halogen-free fire retardants, the particles have good environmental protection performance; by the addition of white oil, the particles have plasticising and internal lubricant functions as well as good stability and low volatility, and fluidity during the forming of polystyrene particles can be greatly improved; polyvinyl alcohol and tricalcium phosphate are dispersion stabilizers and by timely adding a proper amount of the dispersion stabilizers, the product appearance can be improved, the production efficiency can be raised, and cost can be reduced; and the addition of all the components guarantees the performance of the product.
Owner:BEIJING HUACHEN DECHUANG CHEM TECH

Putty powder used for walls in house

InactiveCN101705027AExcellent scratch coating construction performanceGuaranteed crack resistanceFilling pastesCalcium hydroxideSodium Bentonite
The invention provides putty powder used for walls in a house. The putty powder comprises the following ingredients: ground calcium carbonate, sodium-base bentonite, 1788 powder of polyving akohol, hydroxypropyl methyl cellulose and talcum powder, besides, white cement or / and calcium hydroxide powder is / are added therein as a reinforcing material, and also, sodium hexametaphosphate powder and / or tourmaline powder are / is added in the product. The putty powder has excellent scraping construction performance, long-acting mould-proof performance and excellent dense degree of the putty coating as well as the function of releasing negative ions for a long time, can effectively adsorb various harmful substances in the air and purify the air, and has excellent environment-friendly performance.
Owner:毕家新

Halogen-free flame retardant plastic geotechnical grille master batch for mine

InactiveCN102372869ADelay thermo-oxidative agingExtended service lifePhosphoric Acid EstersMasterbatch
The invention discloses a halogen-free flame retardant plastic geotechnical grille master batch for a mine, which consists of polyolefine, special carbon black, composite flame retardants, compatilizer, modified nanometer reinforcing materials, processing auxiliary agents and antioxidizer according to a certain proportioning ratio, wherein the composite flame retardants are compounds of nanometer inorganic flame retardants, micro-capsulated red phosphorus and phosphoric acid ester flame retardants. When the master batch prepared by the method is added in grilles, the performance is stable, the flame retardant performance is good, and the environment protection effect is good.
Owner:TAIAN MODERN PLASTIC

Preparation method of monomethyl fumarate

The invention discloses a preparation method of monomethyl fumarate. A main material of maleic anhydride and methanol are subjected to alcoholysis reaction, thus producing monomethyl maleate, which is then isomerized to produce the monomethyl fumarate. The preparation method comprises the following steps: the main material of the maleic anhydride and the methanol are subjected to the alcoholysis reaction, thus producing the monomethyl maleate; then the monomethyl maleate solution is added with ethyl acetate and is then added with fumaryl chloride at 80-100DEG C for reacting for 60-120 minutes, then the ethyl acetate is removed by distillation, water is added, the product is heated to dissolve, and after cooling, centrifugal separation and vacuum drying, the monomethyl fumarate is obtained. The alcoholysis reaction process can be completed at room temperature, which saves energy and has short reaction time; and the isomerization reaction of the monomethyl maleate and the alcoholysis reaction of the maleic anhydride can adopt the same set of equipment, and the isomerization reaction can be carried out as soon as the alcoholysis reaction is completed, thus having no need for new devices.
Owner:HENAN UNIVERSITY

Static mixed rotational flow separation and extraction process of regenerative base oil N-methyl pyrrolidone

The invention relates to a static mixed rotational flow separation and extraction process of regenerative base oil N-methyl pyrrolidone, comprising the following steps in sequence: (a) carrying out sedimentation of used oil and removing moisture and solid impurities; (b) filtering by a filter, and removing tiny solid particles and colloids; (c) adding sodium hydroxide solution and flocculating; (d) removing floccules and residual sodium hydroxide solution; (e) carrying out reduced pressure distillation by a distiller, and collecting distillate oil; (f) mixing the distillate oil with organic solvent by a static mixer on line; (g) separating out raffinate oil and raffinate oil containing organic solvent from mixed liquor by a swirler; (h) carrying out the reduced pressure distillation on the raffinate oil by a climbing film evaporator, and removing the organic solvent in the raffinate oil; and (i) carrying out the reduced pressure distillation by a molecule (short range) distiller, removing residual organic solvent and peculiar smell gas, and obtaining the regenerative base oil. The separation and extraction process provided by the invention has the advantages of conciseness in procedure, safety in operation, less equipment investment, high product yield, energy conservation, environmental friendliness and the like.
Owner:ANHUI GUOFU LUBRICANT IND

Waterborne photochromic coating as well as nail polish and decorative material

ActiveCN107325603ASolve the problem of slow curing speed and low efficiencyFully curedCosmetic preparationsAntifouling/underwater paintsOligomerSolvent
The invention discloses a waterborne photochromic coating as well as nail polish and a decorative material. The waterborne photochromic coating is prepared from the following components in parts by weight: 30 to 90 parts of a waterborne polyurethane acrylate oligomer, 1 to 10 parts of an epoxy group-containing monomer, 0.5 to 5 parts of a reactive emulsifier, 0.5 to 10 parts of a photoinitiator, 0.2 to 30 parts of a waterborne photochromic agent, 0.5 to 5 parts of a waterborne wetting dispersant, 0.05 to 5 parts of a waterborne flatting agent and 1 to 20 parts of deionized water. The waterborne photochromic coating disclosed by the invention has the advantages that the problems of low curing speed and low efficiency of a heat curable photochromic coating, and the problem that a large amount of solvents or volatile monomers are used in a UV (ultraviolet) photochromic coating are solved; the waterborne photochromic coating is suitable for coating various plastic substrates or nail, and has relatively-high industrial production benefits and a good application prospect.
Owner:ZHANGJIAGANG KANGDE XIN OPTRONICS MATERIAL

Phosphorus-free film forming agent and preparation method thereof

The invention relates to a phosphorus-free film forming agent comprising the following components by weight percent: 0.5-4 percent of silane coupling agent, 0.5-2 percent of titanate coupling agent, 1-10 percent of fluozirconate or zircon salt, 3-5 percent of alcohol solvent, 0.5-2 percent of hydrofluoric acid or fluorid, 1-5 percent of hydrogen peroxide, 0.5-2 percent of notric acid or nitrate and the balance of deionized water or tap water. The phosphorus-free film forming agent is environment-friendly and can increase adhesive force and corrosion resistance.
Owner:CHANGZHOU JUNHE TECH

Making method of vapor barrier film for vacuum heat insulating shield

The present invention relates to a making method of a vapor barrier film for a vacuum heat insulating shield, and a choke film of the vacuum heat insulating shield special for construction. The choke film not only satisfies the high choke performance needed by the vacuum heat insulating shield, but also has the advantages of puncture resistance, weather resistance, cracking resistance, easy hot sealing and good protective effect. The making method uses the following technical scheme: upper-layer material is fed to the topside flow way, and middle-layer material, lower-layer material, binder between the middle-layer material and the upper-layer material and binder between the middle-layer material and the lower-layer material are fed to each flow way of a module in turn; the upper-layer material is selected from PDVC, PS or PET, the middle-layer material is selected from PE, PVOH, PA, EVOH, EVA, PET or PP, and the lower-layer material is PE; a film bubble pipe is extruded through the module; the film bubble pipe is cooled; a clamping plate device in a shape of a character of 'ren' is leaded in to planish the film bubble pipe; and a single-layer flat film of 50 t 200 mum is made through a winder.
Owner:ANHUI KERUIKE INSULATION MATERIAL

deicing agent

Disclosed is a snow thawing agent comprising, in addition to formate as a principal component, additives, such as silicate, sodium metalluminate, sodium carbonate and organophosphate containing phosphoryl. The snow thawing agent according to the present invention has strong thawing capability with low erosion on carbon steel metals and concrete, especially much low erosion on aluminium magnesium alloy materials used in aircrafts; the present invention is easily biodegradable at low oxygen consumption, and thus is an environmentally-friendly, efficient and fast snow thawing agent.
Owner:湖北力泰环保科技有限公司

Environment-friendly high-density solid-free weighting agent and preparation method

An environment-friendly high-density solid-free weighting agent comprises components in parts by weight as follows: 0.02-0.05 parts of a dispersant, 0.3-1 part of a tackifier, 0.5-1.2 parts of chelating agent, 0.6-2 parts of a corrosion inhibitor and the balance of soluble weighting materials, wherein the dispersant is one or two of sodium polyacrylate and copolymer of phosphono and carboxylic acid; the tackifier is one or more of chitosan, agar, polyacrylamide, xanthan gum and hydroxypropyl methyl cellulose; the chelating agent is one or two of aminophosphonic acid chelate resin and ethylenediamine tetraacetic acid disodium; the corrosion inhibitor is one or two of multiple polycarboxylate and sodium gluconate; the soluble weighting materials are one or more of potassium formate, potassium citrate, potassium acetate, potassium silicate and potassium sulfate. The process steps are as follows: the raw materials are taken in weight proportion, mixed and uniformly stirred; the raw materials are added to water and dissolved at the high temperature of 70-80 DEG C; a product is evaporated to dryness, and solid is obtained; the obtained solid is ground into powder, and the solid weighting agent is obtained.
Owner:成都西油华巍科技有限公司

Fiber reinforced thermoplasticity plastic

Disclosed fiber reinforced thermoplasticity plastic is prepared by mixing the following raw materials in parts by weight: 30-60 parts of bamboo fiber, 30-80 parts of thermoplastic plastic, 0.25-0.6 part of a coupling agent, 0.3-0.8 part of a cross-linking agent, and 0.5-1.5 parts of a lubricant. The obtained fiber reinforced thermoplasticity plastic possesses the characteristics of being high in strength, good in dispersibility, low in production cost, excellent in environment protection performance, and the like, is suitable for multiple production technologies such as injection molding, extrusion sheet material, tube material molding and the like, and is applicable to multiple fields of furniture, buildings, decoration and the like.
Owner:国家林业局竹子研究开发中心

Composite fiber felt and composite fiber board for automobile inner decoration and preparation methods of composite fiber mat and composite fiber board

The invention discloses a composite fiber felt and a composite fiber board for automobile inner decoration and preparation methods of the composite fiber felt and the composite fiber board. The composite fiber board for automobile inner decoration comprises one or more first felt layers, and each first felt layer contains the following ingredients in percent by weight: 30%-50% of polylactic acid fibers, 40%-60% of jute fibers subjected to surface treatment by isocyanate and 0%-20% of natural bamboo fibers subjected to surface modification treatment by titanate. The natural bamboo fibers and the jute fibers are natural fibers and the polylactic acid fibers are degradable fibers and the composite material prepared from the fibers are free from pollution, excellent in environment-friendly performance and easy to recycle. After surface modification treatment, the natural bamboo fibers and the jute fibers are composited with the polylactic acid fibers to prepare the composite board, so that the strength and the toughness of the composite board are improved greatly without increase of board density, and the composite board can be used as base materials of automobile inner decoration parts such as automobile roofs and inner board frameworks with high requirements on strength.
Owner:CHINESE TEXTILE ACAD

High-activity biological nutrient solution fertilizer for spraying dripping irrigation, and preparation method thereof

The invention provides highly active biological nutritional manure for drip irrigation. High-content amino acid leftover, high-protein animal dry matter, and rapeseed are crushed and mixed into 80 mesh to 350 mesh to obtain the high amino acid animal and plant powder; a certain amount of sugar, yellow humic acid, organic acid, poly peptide powder, microelement, effective adjuvant, sodium hexametaphosphate, and nitrogen, phosphor, and potassium fertilizers are added into the high amino acid animal and vegetable powder, and heated to 50 DEG C to 60 DEG C to carry out a complex reaction for 2 to 5 hours so as to prepare preparation A; urea is completely dissolved in water a temperature ranging from 35 DEG C to 40 DEG C to prepare preparation B; and then, the preparations A and B are mixed with each other and milled through a colloid mill to ensure that the floating granularity has a diameter of less than 120 microns. At last, the milled preparations are added with active microelement strain liquid, thoroughly mixed, and naturally fermented to obtain the product. The product has the advantages of high vegetable amino acid content and high biological activity, long effective period, obvious effect on growth increase, and simple technique.
Owner:师进

Polyether amine modified waterborne epoxy floor hardener and preparation method thereof

The invention relates to a polyether amine modified waterborne epoxy floor hardener and a preparation method thereof. The polyether amine modified waterborne epoxy floor hardener is prepared through modification of polyether amine, synthesis of epoxy-amine and dispersion of deionized water; the molar ration of the polyether amine, epoxy-terminated glycidyl ether and epoxy resin is 2-6:0.5-4.5:0.5-4.5; during reaction, the polyether amine is firstly added into a reactor, then the epoxy-terminated glycidyl ether is added, the epoxy resin is added in drops, and lastly, the reactants are dispersed through the deionized water to obtain the polyether amine modified waterborne epoxy floor hardener. The preparation method of the polyether amine modified waterborne epoxy floor hardener is simple in process; the reaction temperature is easy to control; waterborne epoxy floor paints produced with the polyether amine modified waterborne epoxy floor hardener are high in hardness and glossiness, reach level-1 impact resistance and obtain high acid and alkali resistance.
Owner:ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE

Water-soluble hot-melting adhesive interlining with very low shrinkage rate and production method thereof

The invention discloses a water-soluble hot-melting adhesive interlining with very low shrinkage rate and a production method thereof. Dimensional change rate in the warp and weft direction after washing is -0.6%-0.5%. After the hot-melting adhesive interlining is combined with fabric through pressing, time for separating the hot-melting adhesive interlining from the fabric in 35-DEG C water is less than 15 seconds. Free and hydrolyzing formaldehyde is equal to or less than 35 mg / kg. The production method sequentially includes seam inverting, singeing, desizing, scouring, bleaching, secondary bleaching or dyeing, post-processing, liquid ammonia finishing, shrink resistant finishing, mechanical pre-shrinking and powder dot coating. The shrinkage rate in the warp and weft direction is low, water-solubility is good, the free and hydrolyzing formaldehyde amount is the minimum, and the production method is easy to operate.
Owner:NANTONG HAIHUI SCI & TECH DEV CO LTD +1

Coupling compound moulded coal binder and preparation method thereof

The invention discloses a coupling compound moulded coal binder and a preparation method thereof. The coupling compound moulded coal binder is a mixture prepared by mixing bentonite, tackifier, sodium carbonate, kaolin and sodium humate; the mixture comprises the following components in parts by weight: 350-600 parts of the bentonite, 45-55 parts of the tackifier, 3-5 parts of the sodium carbonate, 280-320 parts of the kaolin and 100-125 parts of the sodium humate; the tackifier is prepared by smashing 10-15 parts by weight of polyacrylate, 5-10 parts by weight of acrylamide, 3-5 parts by weight of cellulose, 20-25 parts by weight of cassava stalk, 3-5 parts by weight of modified starch and 0.2-0.5 part by weight of cross-linking agent into 50-100 meshes, and mxing the smashed materials. The preparation method comprises the following steps: preparing the tackifier, stocking, pretreating parts of the components, mixing, stirring and the like. The moulded coal binder has favorable waterabsorbtion performance, the moisture of an extruded and shaped coal bar is quickly evaporated and is easy to dry, thus solving the problems of high raw coal moisture, difficult moulded coal production and low shaping rate in rainy days in the south of China.
Owner:柳州化工股份有限公司 +2

Inner plugging air bag for leakage of risk source pipeline and quick plugging method thereof

The invention discloses an inner plugging air bag for leakage of a risk source pipeline and a quick plugging method thereof. The plugging device of the risk source pipeline consists of a sealing mechanism, a flow guide mechanism, a retaining mechanism and a fixing mechanism which are connected with one another. In the method, the plugging air bag, an aeration joint external aeration pump, a flow guide pipe connecting nozzle and a flow guide ball valve are used as plugging flow guide elements; and quick plugging for pipeline leakage is realized by aerating the plugging air bag by using extensibility of the rubber air bag. The inner plugging air bag has a simple structure, light weight and a good plugging effect, can be repeatedly used, is suitable for plugging the risk source pipeline of toxic gas and liquid and the like, and can also be used for inner plugging for leakage of a heat pipeline, a water supply pipeline, a chemical industry pipeline and even a large-sized pipeline.
Owner:TAIYUAN UNIV OF TECH

Lifting repair method for ballastless track with settled curved section

The invention belongs to the technical field of repair of high-speed railway ballastless tracks and particularly relates to a lifting repair method for a ballastless track with a settled curved section. The lifting repair method for the ballastless track with the settled curved section comprises the steps that after a lifting unit and the lifting quantity of the curved section of the ballastless track are determined, a high-pressure grouting device is adopted, grouting is conducted on a lifting hole and a filling hole in sequence according to determined equipment parameters, hole positions, a grouting sequence, a grouting rhythm and construction steps with a triangle balance lifting method at a certain pressure, grouting materials are injected into the position below the ballastless track through a grouting pipe installed in the grouting hole in advance and are rapidly cured, longitudinal displacement change, transverse displacement change and vertical displacement change of the track are monitored in real time through a measuring device, and then accurate lift, balance supporting and rapid repair are conducted on a settled ballastless track structure. According to the lifting repair method for the ballastless track with the settled curved section, construction is rapid, practicability and reliability are achieved, cost is low, and the method which is rapid and convenient to implement, practical and economical is provided for solving of the problem of settlement of the ballastless track within skylight time.
Owner:RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI +2

Low-shrinkage pure-cotton oil fouling resistant hot-melting bonding lining and production method thereof

The invention discloses a low-shrinkage pure-cotton oil fouling resistant hot-melting bonding lining and a production method thereof. The low-shrinkage pure-cotton oil fouling resistant hot-melting bonding lining is characterized in that the warp-direction and weft-direction washing size change rate is not less than minus 0.6 percent, the oil resistance is not less than120 scores, the lining cloth formaldehyde release amount is not more than 40mg / kg, the peeling strength is not less than 12N and the warp-direction and weft-direction dry heat size change rate is not less than minus 0.8 percent. The production method of the invention sequentially comprises the steps of turned sewing, singeing, desizing, boiling, bleaching, re-bleaching or dyeing, aftertreatment, liquid ammonia finishing, oil fouling and shrinkage resistant finishing, post baking, powder point coating and mechanical pre-shrinkage. The invention has the advantages of large warp-direction and weft-direction washing size change rate, high oil fouling resistance, high peeling strength, high environmental-friendly performance and easy operation of the production method.
Owner:曹平

Organosilicon ingredient toughened methyl silicone resin and preparation method thereof

The invention relates to organosilicon component toughened methyl silicone resin and a preparation method thereof. The resin contains the ingredients in gram by weight: 2-30g of organosilicon component, 20-40g of deionized water or acidic silica sol, 30-80g of methyl trialkoxysilane, 0-30g of tetra-alkoxysilane, 0-15g of phenyl trialkoxysilane, 0-10g of dimethyl dialkoxysilane, 0-10g of silane coupling agent, 0-10g of acidic catalyst, 0.02-0.5g of curing agent, 0-15g of ethanol or isopropanol and 0-0.5g of leveling agent, wherein the organosilicon component is synthesized from terminal-hydrogen silicone oil and vinyl siloxane in the presence of a catalyst. The resin disclosed by the invention has the biggest advantage that a film formed material is endowed with very good flexibility, wet-heat resistance and high-temperature resistance while high hardness for the methylsilicone resin is maintained. The preparation method is simple, is good in environmental friendliness and facilitates large-scale production. The surface protection effect for hard or flexible transparent and opaque plastic parts is good.
Owner:CNOOC CHANGZHOU PAINT & COATINGS IND RES INST +2
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