489results about How to "Rigid" patented technology

The invention discloses a polymer nano-silica temperature-resistant, salt-tolerant and fluid loss reducing agent and a preparation method thereof. According to the preparation method, in the presence of nano-silica, a polymer-base nanometer composite material with amphiphilic block hydrophobic associating polymer wrapping inorganic nano-silica is successfully synthesized by virtue of a micellar emulsion polymerization method and combines the rigidity and the heat stability of the inorganic nano-silica and the characteristics of the amphiphilic block hydrophobic associating polymer together, and the temperature resistance, the salt tolerance and the thickening property of the polymer are obviously improved by virtue of the polymer-base nanometer composite material on the basis of the existing good performances of the amphiphilic block hydrophobic associating polymer. As a temperature-resistant, salt-tolerant and fluid loss reducing agent for a drilling fluid in the drilling engineering, the polymer nano-silica temperature-resistant, salt-tolerant and fluid loss reducing agent has a remarkable fluid loss reducing effect under high temperature and high salinity.

The invention belongs to the technical field of high-molecular polypropylene materials, and discloses a low-gloss low-warpage soft-touch-feeling vehicle polypropylene composition as well as a preparation method and application thereof. The composition comprises the following components in percentage by mass: 20-48 percent of polypropylene, 30-40 percent of an elastomer, 20-30 percent of filler, 1-10 percent of a compatilizer and 0.01-1 percent of a processing aid, wherein the polypropylene is copolymerized polypropylene, and the melt flow rate MFR is larger than 60g/10min; the melt flow rate MFR of the elastomer is smaller than 0.5g/10min. By limiting the melt flow rate of the raw materials such as the used polypropylene and elastomer and controlling the ratio of the used raw materials, the obtained composition product is extremely low in glossiness, flat, free of warpage, soft in hand touch feeling, balanced in toughness and capable of being widely applied to various fields, especially automotive trim products.

The invention relates to a method for producing the foam honeycomb core, mainly comprising the following steps: stretching a honeycomb core; producing foaming material according to the size of the stretched honeycomb core; overlapping the honeycomb core and the foaming material; and putting the honeycomb core and the foaming material in to a plate press. The honeycomb core is a hexagonal, polygonal, corrugated or round tube-type honeycomb core which comprises paper, metal, ceramic and polymer material. The foaming material can be phenolic aldehyde, polyphenyl, polyurethane, etc. The invention has the advantages that the foaming material such as the phenolic aldehyde, the polyphenyl, the polyurethane and the like and the prior honeycomb core are overlapped and then are putted in the plate press to be extruded and combined so that the strength of the sandwich of a foam honeycomb plate is improved and the foam honeycomb plate has the advantages of light weight, high planeness and excellent sound insulation effect, fire resistance and heat insulation properties, in addition, the cost of the material is lowered, the foam honeycomb core has the advantages of good machinability, simple structure, good decorating effect and the like, and moreover, the foam honeycomb plate can be produced with the extremely easier and feasible method.

The invention relates to a preparation method for a dry-type water colored sliver, comprising following technical steps: 1) preparation of polyurethane modification acrylic acid latex: dihydric alcohol is put into a reactor and then temperature is increased to 70 DEG C to 100 DEG C, then dihydric alcohol and organic tin dihydric alcohol is added and temperature is increased to 100 DEG C +/- 5 DEG C for 2 to 4 hour reaction, then temperature is decreased to 60 DEG C +/- 5 DEG C and methyl acrylate and dihydroxy methylpropanoic acid are added, then circumfluence temperature is controlled at 60 DEG C to 80 DEG C and reaction is carried out for 6 hours +/- 0.5 hours; when NCO value in reaction system is lower than 1, prepolymer is transferred into a dispersator and is dispersed in water dissolved in neutralizing agent of triethylamine, then water polyurethane is prepared; 50 to 100 pieces of water polyurethane are put into a reactor, temperature is increased to 70 DEG C to 90 DEG C and polyurethane modification acrylic acid co polymerization latex is obtained: step 2, the preparation of dry-type water colored sliver. The dry-type water colored sliver of the invention has the advantages of fine climate resistance performance, no conglutination on the way of transportation, fine elasticity, no discharging of organic matter with volatility and cost saving.

The invention discloses a preparation method of a phase change energy storage paraffin microcapsule with multiple layers of capsule shells. The method comprises the following steps: 1, mixing a trimesoyl chloride active monomer with phase change paraffin, heating to form an oil phase liquid, adding the oil phase liquid to an aqueous emulsifier solution having a same temperature with the oil phase liquid, and adding an aqueous solution of an m-phenylenediamine cross-linking agent while stirring to prepare an oil-in-water emulsion; 2, continuously stirring the above paraffin microcapsule emulsion in a heat insulation state, adjusting the pH value of the paraffin microcapsule emulsion to be greater than 8.0 in the stirring process, centrifuging after the stirring ends, and washing with water; and 3, adding the above paraffin microcapsule with the inner layer capsule shell of polyamide to a trihydroxymethyl aminomethane-HCl buffer solution containing 4-(2-aminoethyl)-1,2-resorcinol, dipping while continuously stirring at room temperature, separating, washing with water, and drying. The energy storage paraffin microcapsule can prevent leakage of capsule core paraffin in the phase change process, has good endophilicity with water, and is in favor of transferring heat.

The invention relates to a silicon carbide fiber lightweight high-temperature insulating material, and a preparation method thereof, and belongs to the field of inorganic material. According to the preparation method, silicon carbide fiber is taken as a main raw material of a lightweight silicon carbide ceramic material, silicon resin or polycarbosilane is taken as a binder, suction filtration moulding and high temperature ceramization are combined, and porous silicon carbide ceramic is prepared. Silicon carbide fiber is arranged along a plane direction in the porous silicon carbide ceramic, is bond together via SiOC or SiC obtained via silicon resin or polycarbosilane ceramization, and possesses excellent mechanical properties and heat insulation performance.

The invention discloses a dynamic and static pressure ceramic sliding bearing lubricated by water or water-based lubricating liquid, which comprises a bearing sleeve, wherein a flange is arranged at one end of the bearing sleeve, and external threads are arranged at the other end of the bearing sleeve; a ceramic shaft sleeve is assembled at the outer layer of the bearing sleeve; a ceramic shaft bushing which comprises a special liquid cavity and a liquid hole structure is arranged outside the ceramic shaft sleeve; a shaft bushing sleeve with the special liquid cavity and the liquid hole structure is assembled at the outer layer of the ceramic shaft bushing; and the bearing of the invention also comprises a bearing end cover, wherein a ceramic ring is assembled at the inner end of the bearing end cover, and internal threads matched with the external threads of the bearing sleeve are arranged on the inner ring of the bearing end cover. The bearing of the invention can improve the wear resistance and the corrosion resistance, can operate in the poor water condition where sandy solid particles are contained, can be lubricated by the water-based lubricating liquid formed by adding other additives into water or water-based liquid; at the same time, the bearing has larger carrying capacity and rigidity, and can ensure a safe and stable operating state, thereby greatly prolonging the operation life.

The invention discloses a cucurbit and vegetable breeding substrate. A production method of the cucurbit and vegetable breeding substrate comprises steps of (1) mixing grass carbon, fermented biogas residues, bio-organic fertilizers and the like; (2) adding ammonium sulphate, potassium sulphate, monoammonium phosphate, manganous sulfate, boric acid and the like to a sprayer containing water and stirring uniformly fully for use; and (3) sieving the bio-organic fertilizers in the step (1) and enabling the bio-organic fertilizers to sink into other materials of the step (1) except the bio-organic fertilizers, adding the mixture solution of step (2) into the mixture of the step (1), turning and mixing once, using a square-hole screen to sieve once till all mixtures pass the screen, adding proper water, continuing to turn and stir three times, using a plastic film to cover mixtures for stack and smothering for 48 hours after completion of preparation, sampling, and performing quantitative package after inspection. The substrate has good fertilizer effects, releases nutrition slowly and is disease resistant, degeneration resistant, comprehensive in nutrition and good in pertinency. The germinate rate and seedling emergence rate of seeds are improved, seedlings are strong and free from excessive growth, soaked roots, dwarf and mummification, blossom buds of seedlings are differentiated normally, and characteristics, the yield and the quality of agricultural products are guaranteed.

Bone graft compositions for repairing bone defects, which are characterized by a chemical composition of cementitious, non-cementitious, highly-resorbable and poorly-resorbable particulate substances, and further characterized by a specific particle size distribution that includes two or more different ranges of particle size, are disclosed. Further disclosed are articles of manufacturing and unit dosage forms containing the bone graft compositions, methods of repairing bone defects utilizing the bone graft compositions, and processes of preparing the same. Also provided are applicators for applying flowable mixtures formed by mixing a dry composition and a liquid carrier, which are particularly useful for preparing and applying bone graft compositions, as well as methods of using same.

The invention provides a non-pneumatic tire with a rigid and flexible structure. The non-pneumatic tire mainly comprises two parts, namely a tire tread and a casing structure, wherein the tread part is mainly made of a thermoplastic elastomer, and the casing structure always extends from an inner surface of the tread to the center of a rim along the radial direction, so that the rim and the casing are combined into a whole; and the whole part is made of tough and elastic engineering plastics, an inverted conical through hole is formed in the casing part in the axial direction, and the inverted conical through hole is structurally characterized in that: holes positioned on two sides of the tire have the maximum diameter and a hole in the middle of the tire has the minimum diameter. The non-pneumatic tire with the rigid and flexible structure has the advantages of other non-pneumatic tires and is endowed with excellent structural performance and safety performance. In addition, because the casing and the rim are made of thermoplastic polymer materials, the mass of the tire is greatly reduced, and the non-pneumatic tire has a great significance for energy conservation, emission reduction and oil consumption reduction.

The invention relates to a seating-type internal mixer which comprises a base, a mixing chamber, a transmission mechanism, rotors, a discharging mechanism, a feeding chamber, a material pressing mechanism and a feeding mechanism, wherein the mixing chamber is mounted above the base; the two rotors are mounted in the mixing chamber; the transmission mechanism is mounted on one side of the mixing chamber; the feeding chamber is mounted above the mixing chamber; the feeding chamber is communicated with the mixing chamber; a feeding door is arranged on one side of the feeding chamber; the feeding mechanism drives the feeding door to move upwards to open the hermetically sealed feeding chamber. According to the seating-type internal mixer, the structural design is reasonable and compact, the advantages of a falling type internal mixer and a turnover type internal mixer are integrated, the structural defects of the conventional internal mixer are overcome, the production speed is high, the requirement on the height of a factory space during installation is low, the space is economized, the mixing capacity is high, the mixing time is short, the production efficiency is high, the degree of automation is high, the product quality and the working environment are improved, the operation is safe and convenient, the labor intensity is reduced, and the labor cost is reduced.

The invention discloses an auxiliary injection molding system of constant pressure gas, which comprises the following parts: injection molding device (10), nitrogen generator (20), gas pressure booster (30) and gas pressure controller (40), wherein the gas pressure controller (40) connects injection molding device (10) and gas pressure booster (30); the gas pressure booster connects nitrogen generator (20).

An easily carried multifunctional ultra-miniature bicycle with special structure features structurally its scalene triangle structure, wheel radium overlapped by 45 deg, close or open type drive mechanism, use of solar or wind driven propeller, miniature speed varying gear, three-functional wheel, foldable pedals, etc.

The invention discloses a high-toughness high-rigidity modified polypropylene material and a preparation method thereof. The high-toughness high-rigidity modified polypropylene material mainly comprises the following components in percentage by weight: 47.0%-99.8% of polypropylene, 0%-20% of talcum powder, 0.2%-1% of antioxidants, 0%-30% of elastomers, 0.1%-1.5% of cross-linking agents and 0.1%-0.5% of auxiliary cross-linking agents. By being different from a general principle of toughening polypropylene by adding the elastomers, the modified polypropylene material disclosed by the invention realizes the dynamic vulcanization in the melt blending process of the elastomers and the polypropylene by using the cross-linking agents and the auxiliary cross-linking agents on the basis that the elastomers are added to a formula which takes the polypropylene as a substrate, so the high-toughness high-rigidity modified polypropylene material is different from the characteristic that TPV appears as rubber at normal temperature. The modified polypropylene material disclosed by the invention appears as the physical property of a thermoplastic plastic at normal temperature, not only has the rigidity of a thermoplastic material, but also has high toughness, so that the high-toughness high-rigidity modified polypropylene material is obtained.

The invention discloses a yarn spool which is characterized by comprising a main spool, an extension spool and a spool cap. The extension spool is connected with the main spool in a threaded manner, the spool cap is connected with the extension spool in a threaded manner, the main spool, the extension spool and the spool cap are rotators, the spool cap is convex, and a retainer plate is formed at a free end of the main spool. The yarn spool consisting of the main spool, the extension spool and the spool cap in threaded manner is simple in structure, convenient to mount, firm in connection and durable. The retainer plate and the convex spool cap formed at two ends of the yarn spool have certain blocking effect to yarns on the spool, thereby guaranteeing the yarns against falling off the yarn spool.

An epoxy silicon, which comprises at least a compound represented by the following general formula (1), and a compound represented by the following general formula (2); and which is represented by an average composition formula (3), wherein a value of [g/(a+b+c+d+e+f+g+h+i+j)] falls within a range of 0.020 or less.

The invention provides a crawler-type multi-joint snakelike robot which comprises joint modules, drive modules and connecting modules. Each joint module comprises three 'V'-shaped side plates, wherein three wheel axles are installed between every two adjacent 'V'-shaped side plates through bearings so that the three 'V'-shaped side plates can be connected to form equilateral triangle distribution; two crawler wheels are fixedly installed on each wheel axle, so that two rows of crawler wheels are formed on the three wheel axles; a crawler belt is installed on each row of crawler wheels, and a joint chain wheel is also fixedly installed on the wheel axle located on the end portion. The drive modules are installed inside the joint modules. Each connecting module is located between every two adjacent joint modules. A worm bracket of each drive module is connected with a part of a connecting plate frame of the corresponding connecting module so that the two adjacent joint modules can be connected. A drive chain wheel of each drive module and the joint chain wheel of the corresponding joint module are in chain transmission. The crawler-type multi-joint snakelike robot is good in stability, strong in ground adaptive capacity, and applicable to disaster relief, detection, firefighting, transportation, space exploration and other fields.

The invention relates to a preparation method of a composite carboxymethyl chitosan/graphene oxide/polyacrylamide hydrogel. The preparation method includes the steps of adding CMCTs (carboxymethyl chitosan) in a GO (graphene oxide) solution, stirring, adding AM (acrylamide), and stirring to obtain a CMCTs/GO/AM dispersion solution; under the conditions of stirring and ice-water bath, adding an initiator solution and an accelerating agent into the dispersion solution, and stirring to obtain a mixed solution; placing the mixed solution in a container, vacuumizing, inflating nitrogen, sealing, and reacting at a room temperature for 8-12 hours to obtain the composite carboxymethyl chitosan/graphene oxide/polyacrylamide hydrogel. The preparation method is simple in preparing process, easy to operate and beneficial to industrial production; the prepared composite carboxymethyl chitosan/graphene oxide/polyacrylamide hydrogel is high in biocompatibility, mechanical property and toughness, can be used for artificial skin, artificial ligament and the like and has a potential application value in histological engineering.

The invention discloses a low-warpage high-temperature-resistant conductive liquid crystal polyester composite material and a preparation method thereof. The composite material is prepared from a high-temperature-resistant liquid crystal polyester resin, a carbon fiber and a lamellar inorganic mineral filler, wherein the high-temperature-resistant liquid crystal polymer resin (LCP) is 50 to 60 parts by weight (percent), the carbon fiber is 15 to 28 parts by weight (percent), the lamellar inorganic mineral filler is 18 to 28 parts by weight (percent), and the total filling volume of the carbonfiber and the lamellar inorganic mineral filler is 40 to 50 parts by weight (percent). The high-temperature-resistant conductive liquid crystal polyester composite material provided by the invention has the advantages of high temperature resistance, high wear resistance, high modulus, less warpage deformation, good size stability, conductivity, high rigidity and the like.

The invention discloses a solvent-free bicomponent road marking paint, which comprises 90wt% of main paint and 10wt% of a curing agent. According to a weight ratio, the formula of the main paint involves: 30-35% of polyaspartic ester polyurea resin, 1.5-2.8% of an anti-settling agent, 0.2-0.4% of a dispersant, 0.2-0.3% of a defoaming agent, 0.1-0.2% of a wetting agent, 15-20% of a pigment, 10-15% of filler, 20-25% of 400-mesh spherical quartz sand, and 5-8% of hollow glass microsphere S38HS. The curing agent is an HDI trimer. The invention also discloses a preparation method and a construction method for the solvent-free bicomponent road marking paint. The solvent-free bicomponent road marking paint adopting the technical scheme involved in the invention is free of organic volatile solvent, and has the advantages of environmental protection, safety, high wear resistance, good reflection, strong adhesion, simple construction process, and good weatherability.

A flow polymer cement concrete road above pitch face layer and relative construction comprise a pitch face layer 3 and a plated adhesive layer 2, wherein above the adhesive layer 2, the invention uses single-stage stage or intermission-stage broke stone to form porous cement concrete, to be laid and flattened, vibrates the porous cement concrete, and sprays the polymer mixture mechanically on the face of concrete, to flow the polymer mixture into the porous cement concrete, then stuffs some holes in the concrete, to form a flow polymer cement concrete face layer 1. The inventive face layer 1 has high strength, anti-crack property, waterproof property and aging resistance or the like, while the adhesive layer 2 can integrate the face layer and the pitch face layer 3, to bear force together.

The invention discloses an enzyme-responsive insecticidal slow-release agent and a preparation method of the slow-release agent. The preparation method comprises the steps of preparing hollow nano silica A at first, preparing phenylamino modified hollow nano silica B with a phenylamino silane coupling agent, loading an insecticide with a solvent evaporation method to obtain a product C, and blocking a mesopore by alpha-cyclodextrin to obtain the enzyme-responsive insecticidal nano slow-release agent. The preparation method is low in cost, mild in reaction conditions and low in energy consumption, and has no three-waste discharge; the obtained slow-release agent is high in loading rate, good in environment compatibility and relatively long in lasting period, solves the problem of burst release of a pesticide in some carrier, and has an enzyme response characteristic; and when alpha-amylase exists, cyclodextrin is hydrolyzed and the insecticide is quickly released, so that an active ingredient of the pesticide is better prevented from being lost before reaching a target, the application times are reduced, and effects of increasing a utilization ratio of the pesticide and improving targeting release can be achieved.

The invention discloses a flax and viscose elastic fabric. The fabric is formed by blending and weaving flax and viscose blended yarn and spandex stretch yarn and then carrying out pretreatment, dyeing, soft finishing, and drying and shaping. The content of the spandex stretch yarn in the fabric ranges from 3 wt% to 10 wt%. Bio-enzymes are adopted for pretreatment for cold stacking and oxygen bleaching processes. A wet short steaming pad dyeing process of reduced dye is adopted for dyeing. Two times of softening are adopted for soft finishing. An FIR4 drying and shaping machine is adopted for drying and shaping. In addition, the flax and viscose elastic fabric has the advantages of being uniform in dyeing, high in color fastness, full in color, soft in hand feeling, compact in texture and rich in elasticity.

A tool system comprising a holder and a cutting tool having a tool cutting edge and a fixing part, wherein the tool cutting edge projects by a predeterminable projecting length beyond the holder for a machining operation, is characterized in that the holder is provided at the outer circumference with a supporting part which projects in the direction of the projecting length of the tool cutting edge and forms a supporting surface for at least partial abutment of the cutting tool.

The invention discloses a polydicyclopentadiene/high-polymer elastomer IPN (interpenetrating polymer network) high-polymer alloy material and a preparation method thereof. The high-polymer alloy material is an interpenetrating network structure formed by the polydicyclopentadiene-formed molecular chain network and the elastomer. The preparation method comprises the following steps: dissolving the elastomer in a dicyclopentadiene liquid; and adding a catalyst into the elastomer dicyclopentadiene solution, injecting the mixed solution into a mold, and curing by reaction. The high-polymer elastomer is completely dissolved to form the uniform continuous phase, and the elastomer also forms the network structure while the dicyclopentadiene molecular chain forms the network structure, thereby forming the dicyclopentadiene-elastomer-interpenetrating IPN high-polymer alloy material. The high-polymer alloy material has the rigidity of the dicyclopentadiene, and also has favorable toughness.