100results about How to "Enhanced" patented technology

The invention provides a preparation method of a graphene based reinforced and flame-retarded recycled polyester staple fiber. The method comprises the following steps: preparing graphene master batch; preparing phosphate based halogen-free flame retardant master batch; weighing the graphene master batch and the phosphate based halogen-free flame retardant master batch, mixing with a recycled polyester raw material, drying, feeding molten dried raw materials into an impurity removal stirrer under the action of a screw extruder by a melt pump for carrying out homogenization impurity-removal treatment, feeding a homogenized and impurity-removal polyester melt into a secondary filter by the melt pump, enabling a filtered melt to pass through a mixed melt on a pipeline to enter a spinning manifold, carrying out drafting processing on a spun fiber to obtain the reinforced and flame-retarded recycled polyester fiber, cutting off bundles and packaging. The reinforced and flame-retarded recycled polyester chip has the good spinning forming property, the fiber quality is high, the using amount of a fire retardant can be effectively reduced under the synergistic effect of grapheme and the phosphate based flame retardant, the cost is reduced, the reinforcement effect can be achieved and the mechanical property of the fiber is effectively improved.

The invention relates to a preparation method for a nano-sliver/cellulose nanocrystalline composite particle. The preparation method comprises the following steps of: (1) adding a cellulose raw material into an acid-mixed solution and reacting at the temperature of 50-90DEG C for 1-20 hours; after the reaction is ended, washing a reaction product with deionized water to neutral and obtaining aldehyde cellulose nanocrystalline; and (2) adding the aldehyde cellulose nanocrystalline into a silver nitrate solution; reacting at the temperature of 60-105DEG C for 10-60 minutes; and after naturally cooling, diluting a reaction product with the deionized water, centrifuging and then carrying out free drying or vacuum drying to obtain a nano-silver/CNC (Cellulose Nanocrystalline) composite material. The preparation method disclosed by the invention is simple and convenient in process, easy in operation and environment friendly and can be used for shortening the preparation period; the prepared CNC/nano-silver has the advantages of small size, easy adjustment, large specific area, firmness in combination of the CNC and the nano-silver, durable antibacterial effect, antibacterial and enhancing functions and broad application prospect.

The invention belongs to the high temperature resistant nylon composite material field, and relates to a continuous long fiber reinforced high temperature resistant nylon composite material including the following components by weight: 100 parts of high temperature resistant nylon resin, 35-155 parts of continuous reinforced fiber, 1-15 parts of bismaleimide, 5-15 parts of a compatible agent A, 1-3 parts of a compatible agent B, 11-46 parts of a composite reinforced antiwear agent, 10-40 parts of a composite lubrication antifriction agent, 1.0-5.0 parts of a processing aid and 0.1-0.5 part of a curing agent. The high wear resistant and high self-lubrication continuous long fiber reinforced high temperature resistant nylon composite material has enough wear resistance, self lubrication property, mechanical properties, high temperature resistance and dimensional stability, and can be used in the manufacture of sliding parts such as gears, turbines, cam and other transmission parts and bearings, bushings, guide rails, pistons and other wear resistant, antifriction and self self-lubrication parts and general structural parts working in the high temperature environment.

An application of graphene in polymerase chain reaction as a reinforcing agent relates to a graphene material. An improved Hummers method is utilized to synthesize graphite oxide, and hydrazine hydrate is utilized to synthesize graphene. A plasmid is used as a template to carry out polymerase chain reaction and multi-round polymerase chain reaction, the graphene can increase the specificity of the polymerase chain reaction within 14 mu gmL-1, and a target product with strong specificity can even be obtained through 8-round polymerase chain reaction. A clinical blood sample deoxyribonucleic acid (DNA) is taken as a template to carry out the polymerase chain reaction, and a polymerase chain reaction (PCR) reaction system which is added with the graphene can obtain a product with single specificity and can still obtain the target product with the strong specificity within a scope between 25 DEG C and primer annealing temperature. The amplification products which are added with the graphene do not influence the primer sequence and length through sequencing tests, and the graphene can be used as a polymerase chain reaction reinforcing agent with good performance for polymerase chain reaction.

The invention discloses a polyamide composite material. The polyamide composite material comprises the following components in percentage by weight: 30%-80% of polyamide, 10%-50% of glass fiber, 5%-30% of heat-conducting filler, 0.1%-2% of a heat stabilizer and 0.1%-0.5% of a lubricant. A special screw assembly design on a twin-screw extruder is adopted, so that the powder can be well dispersed without adding a coupling agent, and the comprehensive performances are still better. In the composite material, the nanometer heat conducting filler is added, so that the heat conducting performance of the composite material is improved under the condition that the mechanical performance is not reduced, the using temperature of the composite material is increased to 180 DEG C and the service life of the composite material is prolonged.

Embodiments of the invention relate to rubber materials, and specifically relate to a carboxyl-terminated liquid fluororubber/solid fluororubber blending elastomer material and a preparation method thereof. The material is prepared from the following raw materials: fluororubber, carboxyl-terminated liquid fluororubber and an acid absorbent. Through the utilization of the toughening effect of the carboxyl-terminated liquid fluororubber and the enhancement effect of the ionic crosslinking formed by a terminal carboxyl group in the carboxyl-terminated liquid fluororubber and the acid absorbent, the hardness of the material can be kept without significant enhancement, while the intensity and toughness can be simultaneously and obviously increased, and good comprehensive properties can be achieved; the material has good high and low temperature resistance, oil resistance and chemical medium resistance; and the preparation method is simple, and easy industrialization can be realized.

A method and a system for managing associated sessions in a network is described, wherein the network comprises a network element configured for managing associated sessions between the network and user equipment. The method comprises the steps of providing a composition session identifier for associating sessions in a network; exchanging the composition session identifier between a user equipment and the network element; and associating two or more sessions with the composition session identifier by exchanging the composition session identifier.

The invention provides a structure and a method for processing a black cotton soil embankment with impervious geotextiles. The embankment structure comprises a geogrid gravelly soil base course, impervious geotextile edging and interlayer seepage-proofing layers, a black cotton soil fill stratum and a non-expansive clay top seal layer. The method comprises the following steps: (1) clearing a foundation; (2) setting out; (3) paving three layers of geogrid gravelly soil with the total thickness being 50cm; (4) spreading the impervious geotextiles on two sides of the road foundation, lapping the impervious geotextiles with filled soil by 250cm, turning up the impervious geotextiles on the slope of the road foundation, lapping the impervious geotextiles on the two sides in the middle of an embankment by 100cm after turning up, and bonding by using emulsified asphalt, wherein the lapping width of the adjacent impervious geotextiles is100cm and the impervious geotextiles are bonded by virtue of the emulsified asphalt; (5) spreading the soil and carrying out rolling construction; and (6) filling and rolling the top seal layer. The structure and the method disclosed by the invention are conducive to the stabilization of the embankment and are capable of preventing the embankment from deformation.

The invention discloses an alcohol-base foundry coating for a green sand mold and a preparation method of the alcohol-base foundry coating. The coating comprises components in percentage by weight as follows: 44%-55% of 400-600-mesh refractory powder, 1.30%-1.45% of sodium bentonite, 0.45%-0.60% of water, 0.5%-0.7% of polyvinyl butyral, 1.4%-1.6% of thermoplastic phenolic resin and 41%-52% of ethanol. The preparation method comprises steps as follows: 1), raw materials are weighed in proportion; 2), sodium bentonite and water are ground and preprocessed to form paste; 3), the 400-600-mesh refractory powder, the thermoplastic phenolic resin and the polyvinyl butyral are mixed with the paste obtained in the step 2), the ethanol accounting for 25% of total weight of ethanol is added for mixing grinding, and a pasty coating is obtained; 4), the remained ethanol is added and stirred to obtain the coating. The alcohol-base foundry coating has high suspension rate and high permeability, the surface strength of the sand mold can be enhanced, the coating breathability is good and avoids cracking and peeling, and casting is not stuck with sand.

The invention belongs to the technical field of mine conveying pipe bodies, and discloses an anti-static flame-retardant steel skeleton fiber reinforced resin pipe and a preparation technology of the anti-static flame-retardant steel skeleton fiber reinforced resin pipe. The anti-static flame-retardant steel skeleton fiber reinforced resin pipe is technically characterized in that the anti-static flame-retardant steel skeleton fiber reinforced resin pipe comprises a pipe body which comprises a seepage-proof flame-retardant conductive inner lining layer and a pressure-bearing flame-retardant conductive structural layer from inside to outside, wherein the seepage-proof flame-retardant conductive inner lining layer comprises glass fiber solidified on an inner base body, and the pressure-bearing flame-retardant conductive structural layer comprises an outer base body which is synchronously provided with a zinc-coated steel wire and glass fiber direct roving in a winding mode, wherein epoxy resin is coated on the outer surface of the zinc-coated steel wire. According to the anti-static flame-retardant steel skeleton fiber reinforced resin pipe, matching among all layers of fiber is reasonable, mechanical property is strengthened, meanwhile, weight of the tube body is lightened, multi-wall carbon nanotubes and nanometer aluminium hydroxide are filled, fine structures of all layers are changed, meanwhile, bending resistant strength and shock resistance capability are enhanced, wear-resisting property and conductivity are largely improved, service life is prolonged, and cost is reduced.

The invention provides a culture medium for human-derived T lymphocytes. Each 1L of the culture medium comprises the following components: 80-120 mL of human AB serum, 7-15 mL of an MEM vitamin solution, 7-12 mM of N-acetyl-L-cysteine, 1.6-2.5 mM of glutamine or a derivative, 0.8-1.2 mM of sodium pyruvate, 15-25 mM of 4-hydroxyethyl piperazine sodium esilate, 4-6 mu g of IL-7, 6-9 mu g of IL-15 or heterodimer thereof, and the balance of X-VIVO basic culture medium, wherein the glutamine or the derivative thereof comprises glutamine or L-alanyl-L-glutamine. The culture medium can be used for culturing antigen specific T lymphocytes, the cell proliferation rate of the antigen specific T lymphocytes can be increased, and the tumor killing ability can be high. The invention further provides a preparation method and application of the culture medium.

The invention discloses a preparation method of a bi-color artificial quartz stone slate. The method comprises steps as follows: (1) raw materials are weighed in proportion and stored separately; (2)an antibacterial agent is added to resin and stirred and mixed in vacuum; pigments, a coupling agent, glass particles, artificial quartz particles, natural quartz sand and quartz powder are stirred and mixed in vacuum; finally, a curing agent is added and stirred and mixed in vacuum, and a mixture is obtained; (3) the mixture is uniformly spread on a template; (4) the template is sent into a vacuum vibration forming press for vibratory pressing forming; (5) primary curing and secondary curing are performed sequentially after vibratory pressing forming. The mechanical properties such as hardness, toughness and the like of the artificial quartz stone slate are effectively improved through optimization and improvement of a raw material formula, matching of different raw materials and improvement of the preparation method, the artificial quartz stone slate has high anti-bacterial ability and lasting anti-bacterial action, and the comprehensive performance of the artificial quartz stone slate is improved.

The invention provides a method for preparing single-piece talcum powder. The method for preparing the single-piece talcum powder by collaborative foaming expansion shear tensile specifically comprises the following steps: firstly, preprocessing the talcum powder by a swelling agent to increase an interval between talcum powder layers so as to enable a foaming agent to be dipped between the talcum powder layers, and enabling the talcum powder layers to relatively slide; utilizing a multistage millstone type mixing mill for shearing and peeling to enable the talcum powder layers to be peeled, and forming the talcum powder of a single-layer laminated structure. The talcum powder prepared with the method is the single-layer laminated talcum powder and has the advantages of high preparation efficiency and high additional value, and the layer structure of the talcum powder is not damaged. The talcum powder is used for composite materials, has a high enhancement function, has transparency, can be widely added into products including plastics, high-class coatings and the like, is suitable for scale production and has an obvious market application value.

The invention relates to a phosphogypsum-doped quick-setting and quick-hardening cement matrix, concrete canvas prepared from the cement matrix and a construction method of the concrete canvas. The raw materials of the cement matrix are composed of the following components in parts by weight: 700 to 800 parts of sulphoaluminate cement and 200 to 300 parts of acid-pickled phosphogypsum. A three-dimensional spacer fabric is filled with the phosphogypsum-doped quick-setting and quick-hardening cement matrix, and an adhesive sealing layer is arranged above the three-dimensional spacer fabric; thethree-dimensional spacer fabric comprises an upper woven fabric layer, a cellosilk layer and a lower woven fabric layer, and the cellosilk layer is composed of cellosilk distributed in a three-dimensional mode. The invention provides the novel cement matrix for the concrete canvas, the strength can be remarkably improved by doping phosphogypsum into the cement matrix system, so that excellent performance is obtained, and a feasible solving method can be provided for solving the current phosphogypsum problem by doping phosphogypsum.

The invention is an Enhanced Patient Mobility Apparatus for use by ambulatory or recovering patients. The Enhanced Mobility Apparatus is fabricated from sturdy tubular material and has a lower U-shaped base frame member mounted on casters with an upwardly extending mid frame member and two vertical supports attached thereto and each also attached at its lower extremity to the lower U-shaped base frame member. The U-shaped base frame member, the mid frame member and the two vertical supports define a walking space for the patient with provision for the possibility of the patient also being able to move about with oxygen tanks, a patient intravenous drip apparatus and other medical devices and apparatus which must be transported by an ambulatory patient.

The invention relates to a tile surface material composite plate and a novel construction method thereof. The construction method comprises the following steps: (1) sticking the tile surface material on a base plate to form a tile surface material spliced plate; (2) cleaning the tile surface material spliced plate; (3) forming straight-line-shaped cutting grooves on connecting seams of the tile surface material spliced plate in batches; (4) filling the cutting grooves with a crack-sealer, then curing to obtain the tile surface material composite plate and finishing the construction. The cutting grooves are formed in the modularized tile surface material composite plate in the construction method; the construction efficiency of the tile surface material composite plate can be improved, the labor intensity of the construction staff is reduced, the technological dependence of the construction staff is reduced; in addition, the butt seam precision of the tile is greatly improved, and the attractive effect of the buildings appearance is improved.

The invention provides a flame-retardant polyurethane foam plastic. The foam plastic is prepared from the following components in parts by mass: 35-50 parts of toluene diisocynate, 52-65 parts of polyether polyol, 1.5-2.5 parts of water, 0.24-0.4 part of triethanolamine, 0.4-0.45 part of dibutyltin dilaurate, 0.45-0.5 part of methylsilicone oil 201 type and 20-30 parts of flame retardant. The flame-retardant polyurethane foam plastic is prepared by adopting a one-step foaming process, is simple in process operation, excellent in controllability and low in cost, and is easy to realize industrial production.

The invention discloses a combined shrunk-enhanced plastic manhole comprising a well body and a well block. The well body comprises a shrunk well body and a cylindrical well body connected with the shrunk well body; the well body is in two-layered structure and comprises an inner well body and an outer well body; the outer well body has a round cross section; and the inner well body has a cross section in a longitudinal raised-line structure and is connected with the outer well body. The invention adopts a combined structure, has high connection strength and reliable sealing, not only saves molding materials, but also ensures the manhole strength and solves the problems of sealing, transportation, cost and strength of the manhole.

The invention discloses a method for preparing a flame-retardant anti-microbico polypropylene bulked continuous filament. The method comprises the following steps: A) evenly mixing magnesium sulfate whisker, basic magnesium chloride whisker, magnesium salt whisker and palygorskite, and then roasting the mixture in a vacuum stove, cooling down the mixture, stirring and dispersing the mixture in absolute ethyl alcohol by sodium hexametaphosphate, then carrying out plasma treatment at normal pressure, and then carrying out ultrasonic dispersion and cleaning in deionized water containing calcium stearate dispersion liquid, filtering the suspended whisker on the upper layer of the solution, taking modified whisker mixture liquid, repeating operation until depuration, and carrying out drying in a vacuum oven after depuration, thus obtaining modified whisker; B) stirring the modified whisker obtained from step A), antimonous oxide, hexabromocyclododecane aluminum, calcium stearate and a PP-g-MAH (maleic anhydride grafted polypropylene) bulking agent in a mixer, and adding isotactic polypropylene powder, so as to obtain flame-retardant anti-microbico isotactic polypropylene after mixing and stirring; and C) drying the flame-retardant anti-microbico isotactic polypropylene obtained from the step B) in a dynamic vacuum oven so that the moisture content is less than or equal to 30 ppm, carrying out direct extrusion through a co-rotating twin-screw melt mixing extruder and spinning, thus obtaining the flame retardant anti-microbico polypropylene bulk continuous filament with improved multiple functions.

The invention discloses a chitosan oligosaccharide graft modified polycarboxylic acid water reducing agent and a preparation method of the water reducing agent. The method comprises the following steps: 1) preparing a chitosan oligosaccharide amidated macro-monomer, placing chitosan oligosaccharide and maleic anhydride in a molar ratio of 1:1.02-1.1 into a polar solvent, adding a catalyst at 85-95DEG C and carrying out a reaction for 3-4 h under stirring, and performing washing and oven-drying to obtain the powdery chitosan oligosaccharide amidated macro-monomer; and 2) preparing the water reducing agent, performing free radical polymerization in an aqueous solution on methyl allyl polyoxyethylene ether and the chitosan oligosaccharide amidated macro-monomer to obtain the chitosan oligosaccharide graft modified polycarboxylic acid water reducing agent. The chitosan oligosaccharide amidated macro-monomer directly participates in polymerization through a carbon-carbon double bond, and has high polymerization activity, and chitosan oligosaccharide side chains can greatly enhance viscosity-increasing water-retention properties of the water reducing agent, and can further enhance dispersion of the water reducing agent. In addition, the chitosan oligosaccharide side chains interacts with polyether long side chains, so that a hydrated film formed on the surface of cement particles ismore stable, and slump-loss is smaller over time.

The invention discloses pervious concrete and a construction method thereof, which relate to the technical field of concrete construction. The pervious concrete is prepared from the following perviousconcrete raw materials in parts by weight: 200 to 300 parts of cement, 1250 to 1350 parts of coarse aggregate, 5 to 280 parts of mineral admixture and 60 to 90 parts of water. The pervious concrete raw material further comprises a surface reinforcing agent, and the surface reinforcing agent is prepared from the following reinforcing agent raw materials in parts by weight: 5-10 parts of polypropylene fiber and 10-15 parts of triethanolamine. The anti-pressure performance is good. The construction method of the pervious concrete comprises the following steps of reinforcing agent preparation, mixing, concrete preparation, pavement pouring and the like. The construction method of the pervious concrete has the advantage that the dispersity of the reinforcing agent is conveniently improved.