120results about How to "Creep resistant" patented technology

The invention relates to a polyether-ether-ketone composite material which consists of polyether-ether-ketone, nanoparticles, filling materials and addition agent materials. The composite material comprises 75 to 95 portions of polyether-ether-ketone powders, 5 to 10 portions of the nanoparticles, 10 to 20 portions of the filling materials and 2 to 5 portions of the additive agents by weight. The filling materials are glass fiber, carbon fiber, quartz powder and MoS2 or toner. A method of compression moulding forming adopted is that: materials is prepared according to the formula; materials are mixed: the materials prepared according to designed requirements poured into an automatic material mixing machine for evenly mixing, the mixing time is between 0.5 minute and 3 minutes, then compressing process is carried out, and the blended mixture is sent to a mould cavity for moulding. The material can be used for sealing materials products. Various valve sealing elements produced by the invention has properties of creep resisting, corrosion resistance, heat resistance and pressurization, etc.; the ability of pressurization and wear resistance of the material are improved, and at the same time the cost is lowered by 10 to 20 percent or even higher, thus being beneficial to using and promotion of the materials.

The invention relates to an electromagnetic flexible composite deposition direct preparation forming method of a multifunctional gradient component, and the method is characterized in that high-energy beams or electric arc with high efficiency and low cost are used as a basic heat source, a static magnetic field or an alternating magnetic field is introduced or the static magnetic field and the alternating magnetic field are simultaneously introduced in the electric arc three-dimensional deposition process, under the support of computer-aided design (CAD)/computer-aided manufacturing (CAM) software, a computer controls a deposition fun or a workpiece to move according to a set space orbit, an electromagnetic composite energy field acting on a molten pool and a nearby micro area is used for heating and melting a material with ideal gradient ratio, the free and flexible adjustment and control of a deposition shape and a component tissue space distribution of the multifunctional gradient component can be realized, and the multifunctional gradient component is used for the development and production of the high-performance component with multiple functions such as oxidation resistance, creep resistance, fatigue resistance in fields such as aerospace, ships, automobile engine or energy.

The invention relates to an ultrahigh molecular weight polyethylene/polyvinyl chloride composite pipe and a manufacture method thereof. The ultrahigh molecular weight polyethylene/polyvinyl chloride composite pipe is manufactured by compounding an ultrahigh molecular weight polyethylene inner pipe and a polyvinyl chloride outer wall, wherein the ultrahigh molecular weight polyethylene inner pipe comprises the following raw material components in parts by weight: (1) 100 parts of the ultrahigh molecular weight polyethylene with viscosity-average molecular weight larger than or equal to 1.5 million, 2.1-10 parts of polyvinyl chloride with the molecular weight of 2,000-10,000; and the polyvinyl chloride outer wall comprises 100 parts of polyvinyl chloride resin (PVC), 5-15 parts of impact modifiers, 0.5-8 parts of heat stabilizers, 0.07-1 part of lubricants and the balance of dyestuff. The invention provides an ideal ultrahigh molecular weight polyethylene/polyvinyl chloride composite pipe with friction resistance, corrosion resistance, high strength, creep resistance and firm fastening of the inner pipe and the outer wall and the manufacture method thereof with firm compound and low production cost. The invention is suitable for transporting corrosive, adhesive, high abrasive materials.

The invention provides a slide layer for longitudinal isolation devices on bridge tracks. The slide layer is arranged below a longitudinal partition wall between a track and a bridge; the slide layer is positioned in the direction of the bridge length; both ends of the slide layer can be expanded to limit table across an abutment; the width of the slide layer is bigger than that of the track; the slide layer comprises an top-arranged film layer, an intermediate sliding film and a bottom-arranged film layer; the top face of the top-arranged film layer of the slide layer is adhered to the bottom face of the longitudinal partition wall; the bottom face of the bottom-arranged film layer is stuck to the top face of the bridge beam body. The invention has advantages of anti-friction, tensile resistance, anti-freezing, creep-resisting, anti-corrosion and having weather ability performances; meanwhile, the invention can meet the requirements for lower friction factor and low friction loss. Besides, the invention also has advantages of perfect processing performance, being economic and practical and low price. Therefore, the invention meet requirements of bridge track longitudinal isolation devices for slide layers.

The present invention relates to one kind of sulfonated fluorene-containing polyaryl ether (ketone) and its application in preparing proton exchanging film. The sulfonated fluorine-containing polyaryl ether (ketone) may be prepared through polymerization of 9, 9-(4, 4-dihydroxyphenyl) fluorene and chloric or fluorous arone (arene) to form polyaryl ether (ketone); and the subsequent sulfonation with chlorosulfonic acid in the controlled consumption for controlled product sulfonation degree. The sulfonated fluorine-containing polyaryl ether (ketone) may be dissolved in different polar solvents before being cast to form single-component film, or be mixed with other polymer material for preparing composite film, or be mixed with heteropoly acid and other inorganic matter for preparing hetero film; and all these kinds of film have the advantages of low cost, high stability, high water absorption, small equivalent molecular weight, etc. and are expected to find use in fuel cell.

The invention discloses a flexible composite high-pressure delivery pipe. The flexible composite high-pressure delivery pipe comprises a media transmission layer, at least one enhanced layer and a protective layer which are integrally formed by means of heating and pressurization, the enhanced layers are arranged between the media transmission layer and the protective layer and are arranged as fiber enhanced layers, metal enhanced layers or a combination of the fiber enhanced layers and the metal enhanced layers, the fiber enhanced layers and the metal enhanced layers are of banded structures formed by gel mould coated with hot melt glue, an angle of 50-60 degrees is formed between each of the fiber enhanced layers and the metal enhanced layers and a central axis of the pipe, and the enhanced layers are of a bidirectional fiber band and metal band intersection winding structure comprising a left spiral winding layer and a right spiral winding layer. The flexible composite high-pressure delivery pipe has the advantages of reasonable structural design, high pressure bearing capacity, high resistance to low-temperature impact, small friction coefficient, good flexibility, environmental protection and long service life.

The invention discloses a long glass fiber enhanced polypropylene composite material water meter casing and a manufacture method of the long glass fiber enhanced polypropylene composite material water meter casing. A thermal plastic composite material water meter casing comprises the following ingredients: blending alloy, auxiliary agents, color powder, antioxidants and ultraviolet absorbers, wherein the blending alloy consists of glass fiber, polypropylene and/or polypropylene modified materials. The thermal plastic composite material water meter casing made by adopting an injection molding forming process has the characteristics of high-temperature resistance, low-temperature resistance, impact resistance, creep deformation resistance, water pressure resistance, hydrolysis resistance, no heavy metal, long service life, low cost, environmental-friendly effect and the like, is easy to process and conforms to the industrial standard of the national plastic water meter casing material, so the thermal plastic composite material water meter casing is particularly suitable for large-scale industrial production and wide popularization and application.

The invention discloses a high-elasticity durable automobile rubber shock absorbing material. The high-elasticity durable automobile rubber shock absorbing material comprises a shock absorbing material body and a wear-resistant coating which coats the outer side of the shock absorbing material body; the shock absorbing material body is prepared from the following raw materials in parts by weight:20 to 30 parts of EPDM, 20 to 25 parts of butyl rubber, 10 to 15 parts of butadiene rubber, 4 to 7 parts of talcum powder, 2 to 5 parts of a toughening agent, 2 to 4 parts of an antioxidant, 1 to 4 parts of an anti-aging agent, 1 to 3 parts of a coupling agent, 3 to 9 parts of epoxidized soybean oil, 3 to 6 parts of a maleic anhydride compatilizer, 3 to 7 parts of paraffin, 5 to 8 parts of nano-barium sulphate, 2 to 5 parts of modified nano silicon nitride, 1 to 3 parts of potassium stearate, 2 to 5 parts of an accelerant, 2 to 4 parts of a coupling agent, 1 to 2 parts of zinc borate and 3 to7 parts of sulphur. According to the high-elasticity durable automobile rubber shock absorbing material, the wear resistance and the durability of a shock absorbing piece are greatly improved by the wear-resistant coating on the outer side of the shock absorbing material body.

The invention discloses a preparation method of a calcium-based adsorbent. According to the preparation method, natural quartz stone powder (including a main component SiO2) and active carbon powder are taken as raw materials for preparing silicon oxynitride by adopting a carbon thermal reduction method; and silicon oxynitride is used as an inert supporting material and is treated by a process of immersing, drying and calcining to load CaO so as to prepare the calcium-based adsorbent. By controlling the CaO precursor and calcining conditions, relatively good circulating stability is obtained. The raw material has a wide source, the preparation method is simple and convenient and the operability is strong; and the problem that the adsorption capacity of the high-temperature CO2 calcium-based adsorbent is reduced after a plurality of times of CO2 adsorption/desorption cycles is improved very well.

The invention provides equipment and a process for weaving a composite materials; the equipment comprises a knitting machine and a mechanical arm, the knitting machine comprises a large circle, yarn spindles, two circular rings and a core mould; the yarn spindles are arranged on the inner side wall of the large circle, and are uniformly arranged along the circumferential direction of the inner side wall of the large circle; the two circular rings are arranged side by side, the two circular rings coincide with the central axis of the large circle, and a preset distance is reserved between the two circular rings, so that woven yarns can pass through the preset distance; the core mould is arranged in the circular rings in a penetrating mode, one end of the core mould is connected with the mechanical arm, and the mechanical arm is used for driving the core mould to do reciprocating motion along the central axis direction of the large circle; the type of the yarn spindles is at least two, the yarn spindles of all types rotate synchronously with the large circle, and the large circle revolves according to a preset trajectory. An insulation operating rod produced by the weaving process and the equipment is higher in fiber density compared with other insulating rod formed by other processes, internal air bubbles are fewer, the insulation operating rod has the advantages of being lighter in weight, better in mechanical and insulating performance and capable of being applied to overhauling work of extra-high voltage electric power engineering.

The invention discloses an ultra high molecular weight polyethylene and polyvinyl chloride composite pipe embedded with reinforced steel filaments and a manufacturing method thereof. The ultra high molecular weight polyethylene and polyvinyl chloride composite pipe is characterized in that: an inner layer is an ultra high molecular weight polyethylene pipe; an outer layer is a polyvinyl chloride pipe; the steel filaments are arranged between the inner layer and the outer layer; more than one fifth of the diameter of the steel filaments is embedded into the outer wall of the inner layer ultra high molecular weight polyethylene pipe, wherein the polyvinyl chloride outer wall is added with an impact modifier, a heat stabilizer, a lubricant and other PVC processing aids. The invention provides the ultra high molecular weight polyethylene and polyvinyl chloride composite pipe, which not only has the characteristics of wear resistance, corrosion resistance and difficult adhesion of the ultra high molecular weight polyethylene pipe, but also has the good performance of high strength and creep resistance of the reinforced polyvinyl chloride material; the inner and outer wall of the pipe are corrosion resistant; and the pipe is compounded by hot melting the ultra high molecular weight polyethylene inner pipe, the polyvinyl chloride outer wall and the embedded steel filaments, the combined strength of the three materials is greatly improved, and the problem of combination of different materials is radically solved when the three materials are firmly combined.

The invention relates to a carbon fiber-reinforced halogen-free flame-retardant PA66 composite and a preparation method thereof. The composite comprises, by weight, 52.1 to 68.1% of PA66, 15 to 20% of a halogen-free fire retardant, 10 to 30% of carbon fibers, 2 to 4% of a grafting type toughening modifier, 0.4% of an anti-oxidant and 0.5% of a lubrication dispersing agent. The invention also relates to a preparation method for the carbon fiber-reinforced halogen-free flame-retardant PA66 composite. The PA66 composite provided by the invention is developed to meet special requirements of electric appliance products on antistatic performance and flame resistance of electromagnetic-shielding materials. Compared with the prior art, the PA66 composite provided by the invention has the advantages of high mechanical strength, surface resistance of 10<-2> to 10<6> omega, electromagnetic shielding performance, no halogen, environmental protection, flame-retardation performance reaching the level UL-94V0, good appearance and excellent comprehensive properties, and is especially applicable to thin-wall products with high requirements on precision.

The invention relates to a medium-strength fiber and a processing method thereof, and belongs to the fiber manufacture technical field; the method uses slices or melt as primary material, and the fiber is formed by the following steps: spinning, cooling, oiling, and multistage stretching heat setting; the multistage stretching heat setting is completed in four pairs of rollers; the first pair of rollers are cold rollers; the second, third, and fourth pairs of rollers are hot rollers. The method is applied to medium-strength fiber processing, stable in spinning condition, low in waste fiber rate, and high viscosity slices are employed in the medium-strength fiber processing, thus obtaining the medium-strength fiber with high breaking tenacity, good dimension stability, and stable mechanical property.

A sulfonated polyarylether containing conjugated structure and its intermediate are disclosed. Its preparing process includes such steps as mixing diphenol monomer, difluoro monomer and anhydrous potassium carbonate in non-protonic polar solvent, reaction to obtain its intermediate, dissolving it in polar solvent, dripping the solution of chlorosulfonic acid, and reaction. Its advantages are high resistance to high temp and creep, strength, toughness, stability, hydroscopicity and proton exchange capacity.

The invention relates to patterned ceramic, in particular to a method of using ceramic precursors to prepare patterned ceramic. The method includes: mixing polydimethylsiloxane with crosslinking agent, adding the mixture into a metal box, heating, placing in a master pattern, heating until PDMS (polydimethylsiloxane) is solidified, adding liquid PDMS, placing in a drying oven for solidification, and taking out the master pattern to obtain a PDMS mould with a mould cavity identical to the master pattern in shape; mixing the ceramic precursors with initiator, injecting the mixture into the mould cavity of the PDMS mould, and stripping the PDMS mould after the ceramic precursors in the mould cavity are solidified to obtain solidified patterned ceramic precursors; heating the solidified patterned ceramic precursors, and taking out the solidified patterned ceramic precursors after cooling to obtain patterned ceramic. The method is simple, feasible, safe, efficient and applicable to various ceramic precursors, can be used for preparing crack-free and high-precision three-dimensional ceramic with various fine patterns, and can be widely applied to the fields of high-temperature MEMS (micro electromechanical system) devices, engine parts, micro engine combustors, chemical reactors and the like.

The invention discloses a wear-resistant and anti-ageing automotive rubber damping piece material. The wear-resistant and anti-ageing automotive rubber damping piece material comprises the following raw materials in parts by weight: 20-30 parts of natural rubber, 20-25 parts of butyl rubber, 10-15 parts of butadiene rubber, 20-25 parts of wear-resistant polyvinyl chloride masterbatches, 4-7 partsof talcum powder, 2-5 parts of a toughener, 2-4 parts of an antioxidant, 1-4 parts of an anti-ageing agent, 1-3 parts of a coupling agent, 3-9 parts of mineral oil, 3-6 parts of a maleic anhydride compatilizer, 3-7 parts of paraffin, 5-8 parts of nano barium sulfate, 2-5 parts of modified nano silicon nitride, 1-3 parts of potassium stearate, 2-5 parts of a promotor, 2-4 parts of a crosslinking agent, 1-2 parts of zinc borate and 3-7 parts of sulphur. The wear-resistant and anti-ageing automotive rubber damping piece material is reasonable in formula, the compatibility of various components isgood, and the prepared damping material has the advantages of high damping coefficient, high resilience force, damping ability, high temperature resistance, ageing resistance, creep resistance, wearresistance, good flame retardant and the like, and is suitable for automotive damping products.

The invention relates to a preparation method of a high-temperature corundum mullite crucible, and belongs to the field of silicate crucible preparation. The crucible comprises, by mass, 10-50% of calcined alumina powder, 5-20% of kyanite powder, 20-40% of kaolin powder and 5-30% of white corundum particles. The preparation method having five steps has the advantages of scientificity, reasonability, simplicity and easiness in operation, and convenience in industrial production; the prepared crucible has the advantages of long service life, high temperature resistance, high creep resistance andthe like.

Provided are carbon fiber reinforcing tyre casting gypsum powder and a preparation method thereof. The gypsum powder is prepared by the following raw materials by weight: 10-15 parts of alpha gypsum, 15-25 parts of beta gypsum, 17-23 parts of coal ash powder, 10-20 parts of carbon fiber, 0.001-0.002 part of retarder, 0.01-0.05 part of ammonium chloride and 0.2-0.5 part of antifoaming agents. The preparation method of carbon fiber reinforcing tyre casting gypsum powder is further provided. Products manufactured by the carbon fiber reinforcing tyre casting gypsum powder are high in product strength, good in heat-conducting performance, and good in physical performance and chemical performance. The preparation method is simple, easy to operate, low in production cost and beneficial to industrialized production.

The invention provides a plastic alloy for a washing machine cover plate and a preparation method of the plastic alloy. The following raw materials are adopted: polyformaldehyde, polyether sulfone, polysulfone, TPU, glass fiber, PBT, a KH550 type silane coupling agent, modified SEBS, silica, an ethylene-vinyl acetate copolymer, wollastonite and an anti-ageing agent. The TPU has extremely high adhesion so that the oil resistance and solvent resistance of the whole elastomer are obviously improved, and a molecular chain contains polarity and active carbamate, carbimide and various radicals, and can be interspersed into the SEBS; the polyether sulfone has the comprehensive properties of being good in size stability, resistant to corrosion, resistant to creep and the like, and the heat resistance of the polyformaldehyde system is improved; the polysulfone improves the hardness and strength of the polyformaldehyde system; and the modified SEBS is easy to form a network structure, so that the whole system has excellent processing fluidity. The experiment result shows that the plastic alloy for the washing machine cover plate, prepared by the preparation method, has good processing fluidity and mechanical properties.