163results about How to "Improve creep performance" patented technology

The present invention relates to an acrylic pressure sensitive adhesive composition comprising (meth)acrylic copolymers including alkyl(meth)acrylic acid ester monomer having 1˜12 carbon atoms of alkyl group, characterized in that the gel content is 10˜55%, the swelling ratio is 30˜110, the weight average molecular weight of sol eluted from the adhesive by ethyl acetate is at least 800,000, the molecular weight distribution is 2.0˜7.0; and a polarizer and a liquid crystal display comprising the above composition show excellent durability under a high temperature and humidity condition, and can improve the light leakage phenomenon and provide excellent operability at the time of manufacturing polarizer by effectively providing high modulus and stress release property.

Containers suitable for storing pressurized fluids at cryogenic temperatures of −62° C. (−80° F.) and colder are provided and comprise a self-supporting liner and load-bearing composite overwrap, whereby means are provided for substantially preventing failure of the container during temperature changes.

In a powertrain that includes wheels for driving a vehicle, an engine including a crankshaft, a machine driveably connected to the crankshaft and able to operate alternately as an electric motor and electric generator, a transmission including an input clutch driveably connected to the crankshaft and an output driveably connected to at least two of the wheels, and an electric storage battery having a variable state of charge and electrically connected to the machine, a method for controlling vehicle creep including adjusting a torque capacity of the input clutch to a desired magnitude of input clutch torque transmitted to the wheels, determining a desired change in torque produced by the machine such that a speed of the crankshaft is controlled to a desired idle speed, using the magnitude of input clutch torque capacity and the desired change in torque produced by the machine to determine a desired magnitude machine torque, and using the machine to produce said desired magnitude of machine torque.

The invention provides a preparing method for ultra-fine high-purity Ti2AlNb alloy powder. The preparing method comprises the following steps that 1, components of a Ti2AlNb base alloy are used as ingredients and smelted into a Ti2AlNb alloy bar; 2, finish turning is carried out on the smelted Ti2AlNb alloy bar, the diameter of a processed electrode bar ranges from 10 mm to 100 mm, and the length ranges from 100 mm to 1000 mm; 3, the electrode bar is loaded into a reaction chamber, the reaction chamber is vacuumized, and helium or argon or helium and argon mixed gas is introduced into the reaction chamber; 4, plasma gun powder of PREP powder manufacturing equipment ranges from 100 kW to 300 kW, a plasma torch comprises a tungsten cathode and a copper anode, the electrode bar is not used as an electrode, the end of the electrode bar is heated to be melted uniformly, atomized drops are tossed out from the end of the electrode bar, the drops are cooled fast in an inert gas environment to form spherical particles, and the spherical particles drop into a bottom collector of the reaction chamber; 5, prepared Ti2AlNb alloy powder is screened and packaged in the inert gas protection environment; 6, the Ti2AlNb alloy powder prepared through the method has the advantages of being ultra-fine, high in purity, high in spherical degree and low in oxygen content.

The invention provides a solid aluminum alloy conductor and a preparation method thereof. The solid aluminum alloy conductor contains by weigh 0.40-1.00% of iron, 0.05-0.20% of copper, 0.05-0.10% of silicon, 0.02-0.12% of zinc, 0.01-0.05% of magnesium, 0.02-0.12% of rare earth element and the balance of aluminum and unavoidable impurities. The method comprises steps of: completely melting an aluminum ingot; adding a magnesium ingot with a special tool; after melting, sequentially adding manganese aluminum alloy, zinc aluminum alloy, copper aluminum alloy, iron aluminum alloy, silicon aluminum alloy and rare earth aluminum alloy of different weights; fully mixing, refining and conducting ladle analysis; after qualification of all components, casting and rolling into a required aluminum alloy rod; conducting aging treatment; extruding the required solid core conductor according to the requirements; conducting special heat treatment to reach corresponding performance indicators, so as to meet the need to substitute a traditional copper core electrical wire of electrical wire materials.

Footwear with an upper and a sole construction having an outsole, in which the upper is constructed with an outer material and with a waterproof functional layer at least partially lining the outer material on the inner side of the latter and having an upper end region on the sole side with an outer-material end region and a functional-layer end region, the outsole (19) is joined to the upper end region, the functional-layer end region has an overhang projecting beyond the outer-material end region and an adhesive zone which is closed in the direction of the sole periphery and comprises a reactive hot-melt adhesive which brings about waterproofness when in the fully reacted state is applied to the overhang.

The invention relates to a reactive self-adhered ethylene-propylene-diene monomer waterproof roll which consists of a surface waterproof layer, a middle self-adhering layer and a bottom isolating layer, wherein the surface waterproof layer is formed by co-mixing ethylene-propylene-diene monomer rubber, zinc oxide, sulfur, stearic acid, highly wear-resistant carbon black, processing oil and an accelerator DM, the middle self-adhering layer is an active self-adhered sizing material which is formed by co-mixing asphalt, a softener, a tackifier, butyl rubber IIR (Isobutylene-Isoprene Rubber), butadiene styrene rubber, an activator and filler, and the bottom isolating layer is a PET (Polyethylene Terephthalate) thin film. As the middle self-adhering layer which contains asphalt and active macromolecular active components and has the active reactive self-adhered sizing material is arranged in the upper layer on the inner surface of the surface waterproof layer which takes ethylene-propylene-diene monomer as a main material, so that edges of the roll and the roll and the base layer of concrete are directly adhered by the middle self-adhering layer without any adhesives in match. The generated waterproof layer has a service life effect which is equal to that of a main body material, so that the roll is an ideal upgrading product of existing single ethylene-propylene-diene monomer waterproof roll.

The invention relates to the technical field of plastic product processing, particularly a RRP (polypropylene random) temperature-resistant water pipe. The RRP temperature-resistant water pipe is prepared from the following raw materials in parts by weight: 60-80 parts of carrier resin, 10-30 parts of LLDPE (linear low-density polyethylene), 1-6 parts of butyl rubber and 3-8 parts of special coloring master batch for RRP pipes. The temperature-resistant pipe has the advantages of high toughness, favorable weather resistance, wide application range and high safety, and can be used as both a cold-water pipe and a hot-water pipe.

The invention discloses a titanium aluminum-ceramic layered material and a preparation method thereof, which relate to a layered material and a preparation method thereof, and mainly solve the problem that aluminum fusion loss causes uncontrollable constituents when an element foil reaction annealing method is used for preparing a TiAl base plate material. The titanium aluminum-ceramic layered material is made by an in-situ synthesis technology and prepared from pure Ti foils and an Al base composite foils through alternating lamination, hot-pressing and reaction annealing. The method comprises the following steps of: firstly, preparing an Al base composite material; secondly, carrying out hot extrusion and rolling on the Al base composite material; thirdly, carrying out surface preparation on the rolled Al base composite material foils and the pure Ti foils; fourthly, carrying out alternating lamination and hot-pressing on the foils; fifthly, performing low temperature thermal treatment; sixthly, performing thermal treatment for densifying; and seventhly, performing heat preservation, thus obtaining the titanium aluminum-ceramic layered material. The preparation method provided by the invention is used for preparing the titanium aluminum-ceramic layered material.

The invention discloses a polyurethane hard-foam composition and a polyurethane hard-foam plastic prepared from the same. The polyurethane hard-foam composition comprises polyisocyanate, polyether glycol, polyester polyol I, additive flame retardant and foaming agent, wherein the polyester polyol I is flame-retardant polyester polyol. The flame-retardant polyester polyol is added in the polyurethane hard-foam composition, so that the consumption of the additive flame retardant can be reduced; and the plastification action of the additive flame retardant on the polyurethane hard-foam plastic can be reduced, the Van der Waals force among macromolecular chains of polyurethane can be increased, and the relative slippage among the macromolecular chains can be reduced, thereby reducing the sizes of foaming pores formed by the composition. Meanwhile, the Van der Waals force among the macromolecular chains is increased, so that the rigidity of the pore walls of the foaming pores in the polyurethane hard-foam plastic can be increased, thereby ensuring that the foaming pores are more regular in structure and the deformation degree of the foaming pores is weakened. The foaming pores are small in size and stable in structure, and can enhance the compression strength and creep property of the polyurethane hard-foam plastic.

The invention discloses a high-strength steel fibre castable which is prepared by the following raw materials in parts by weight: 2.5 parts of bauxite material with the granularity of 8-5mm, 2.3 parts of bauxite material of which the granularity is more than 0.075mm and is less than 5mm, 2 parts of brown aluminium oxide particle material with the granularity of 3-1mm, 0.8 part of bauxite material of which the granularity is less than or equal to 0.075 mm, 0.4 part of alumina submicron powder of which the granularity is less than or equal to 0.025 mm, 0.6 part of carborundum powder of which the granularity is less than or equal to 0.075 mm, 0.3 part of silica micropowder of which the granularity is less than 0.019 mm, 0.6 part of CA-70 cement, 0.5 part of brown aluminium oxide powder of which the granularity is less than 0.053 mm, 0.2 part of No. 446 heat-resistant steel fiber, 0.02 part of anti-explosion steel fiber, sodium tripolyphosphate accounting for 0.1% of total material weight and sodium hexametaphosphate accounting for 0.08% of total material weight. The product has high compression strength, high breaking strength, high refractoriness under load and favorable thermal shock resistance stability, has the characteristic of microdilatancy at high temperature and has the advantages of favorable wear-resisting property and the like.

The invention discloses a method for preparing a Ti5Si3/TiAl composite material, relates to a method for preparing a composite material and aims to solve the problems of poor uniformity, relatively lower compactness and high cost of a TiAl composite material prepared by using the prior art. The method comprises the following steps of: stacking pure titanium particles into a steel mold to obtain a porous titanium prefabricated body; and linearly cutting an Al-Si alloy ingot into blocks, placing the blocks on the porous titanium prefabricated body for hot pressing and sintering under a vacuum condition, cooling the porous titanium prefabricated body to room temperature and demolding the porous titanium prefabricated body to obtain the Ti5Si3/TiAl composite material. The method has the advantages of effectively improving material compactness (95 to 98 percent) and structural uniformity, improving high-temperature strength, creep property and oxidation resistance, meeting requirements on practicability, saving the process of ball milling and powder mixing in a powder metallurgical process, reducing the probability of the oxidation of Ti and Al and the blending of new impurities, and reducing the negative influence of the oxidation and the impurities on Ti Al-base alloy plates, and also has the advantages of simple process, easy operation, less equipment and low cost.

A resin composition including 30 to 90% by mass of polyamide (A), 70 to 10% by mass of glass fibers (B), a copper compound (C) and a halogenated compound (D), wherein polyamide (A) has a sum of a terminal carboxyl group concentration and a terminal amino group concentration of 100 milliequivalents/kg or more and 200 milliequivalents/kg or less, the terminal carboxyl group concentration being higher than the terminal amino group concentration; glass fibers (B) have a fiber diameter of 10 to 20 μm and a weight average fiber length of 5 to 30 mm; the content of copper based on polyamide (A) is 30 ppm or more and 200 ppm or less; and the molar ratio of halogen to copper (halogen/copper) is more than 5 and not more than 25.

The invention provides a creeping non-cured rubber asphalt waterproof roll material, aiming to solve the problems of poor water seepage resistance, poor tensile strength, poor weather resistance and poor basal plane binding capacity for cast-in-place concrete in the conventional self-adhered waterproof roll material. The creeping non-cured rubber asphalt waterproof roll material comprises a polyethylene membrane and an asphalt adhesive layer with which the polyethylene membrane is coated, wherein the asphalt adhesive layer is prepared from the following components of base asphalt, hot melt adhesive, rubber modifying agent, viscosity-enhancing rubber and modified padding; the modified padding is grafted fumed silica. Meanwhile, the invention further discloses a preparation method for the creeping non-cured rubber asphalt waterproof roll material. The creeping non-cured rubber asphalt waterproof roll material provided by the invention has high water seepage resistance, high tensile strength, high weather resistance and high basal plane binding capacity for the cast-in-place concrete.

The invention provides a degradable Zn-Ag series zinc alloy and a preparing method and application thereof. The zinc alloy is composed of Zn, Ag and a microelement. The mass percent of the Zn ranges from 89.85 to 99.4%, the mass percent of the Ag ranges from 0.01 to 10%, and microelement comprises one or multiple of Fe, Mg, Ca, Sr and Li. The mass percent of the microelement ranges from 0.01 to 0.55%. The method comprises the steps of heating metal zinc to be molten after burdening, adding metal silver, performing stirring until the metal silver is molten, adding the microelement, performing stirring, standing and pouring, and obtaining a zinc alloy cast ingot; and performing heat treatment and heat preservation on the zinc alloy cast ingot, and finally performing extrusion forming. The made zinc alloy has the higher strength and ultra-high plasticity, good anti-bacterium effect is achieved, and the alloy can serve as a degradable medical device implant to be applied into the human body to be subjected to non-toxic degradation.

The invention provides an ultralow temperature spraying non-curing rubber asphalt waterproof paint, and aims to solve the problems caused by high temperature spraying of a conventional waterproof paint. The waterproof paint comprises asphalt, hot melt adhesive, tackifying rubber, modified filler, a polyamide epoxy curing agent, phosphatized nano silicon oxide, and dodecanol ester. The waterproof paint is modified by the polyamide epoxy curing agent, phosphatized nano silicon oxide, and dodecanol ester; the viscosity is reduced, the flowing performance is improved, the spraying can be carried out at a low temperature, and the high energy consumption and severe pollution of high temperature spraying are avoided. At the same time, the invention also discloses a preparation method of the ultralow temperature spraying non-curing rubber asphalt waterproof paint and a creep type non-curing rubber asphalt waterproof coiled material, which comprises an asphalt layer composed of the ultralow temperature spraying non-curing rubber asphalt waterproof paint.

The invention provides a flux-free vacuum-cast high-purity magnesium alloy and a preparation method thereof. The method includes the following steps that (1) raw materials are preheated; (2) heating and smelting are performed as follows: after the inside of a furnace is pumped to be vacuum, the furnace is filled with inert gas to be under the pressure being 500-1,000 Pa, power-transmission heatingis started, and the three-stage type heating manner is adopted in the heating process; (3) gas introduction and refinement are performed as follows: gas introduction and refinement are performed in melt obtained in step (2), the inert gas is introduced, in the process of gas introduction and refinement, the temperature is increased to be 800-850 DEG C at the rate of 3-8 DEG C/min, then high-temperature standing is performed under the temperature condition that 800-850 DEG C is kept, and the standing time ranges from 15 min to 40 min; (4) filtering and casting are performed as follows: after high-temperature standing in step (3) ends, the temperature is reduced to be 760-820 DEG C, and casting is performed after filtering; (5) cooling is performed as follows: after casting in step (4), furnace cooling is started, or the inert gas is introduced for boosting cooling, and then a magnesium alloy cast ingot is obtained. The obtained magnesium alloy is uniform in structure, free of nonmetalslag inclusions (such as flux slag inclusions and oxidation slag inclusions), low in shrinkage porosity, few in cast ingot defect and obvious in effect on magnesium-rare earth alloys difficult in slagremoval.