766results about How to "Reduce hardness" patented technology

Provided are a thermoplastic resin composition which is excellent in oil resistance, heat resistance, weatherability, impact resistance, transparency, and moldability, and which can be produced economically, an elastomer composition with low hardness and high tensile strength which is excellent in oil resistance and compression set, and a molded object produced by molding the thermoplastic resin composition or elastomer composition. The composition is produced by compounding a thermoplastic resin or an elastomer with a block copolymer having at least one methacrylic ester polymer block and at least one acrylic ester polymer block. Also provided are a process for producing a methacrylic ester-acrylic ester-methacrylic ester block copolymer which requires hardly any purification, which is excellent in heat resistance and weatherability, and in which the molecular weight and the molecular-weight distribution are controlled, and a methacrylic ester-acrylic ester-methacrylic ester block copolymer produced by the process.

The present invention relates to a soft thermoplastic elastomer composition that is free of thermoplastic resin that can be utilized in manufacturing shoe sole inserts, seals, gaskets, wheels, and that can be overmolded on a hard substrate, such as a metal or a thermoplastic resin, for grips or handles on various household items. The present invention more specifically discloses a thermoplastic elastomer composition that is made by a process comprising: (1) mixing (A) a block copolymer comprising a first polymeric block that is comprised of repeat units that are derived from a vinyl aromatic monomer and a second block that is comprised of repeat units that are derived from a conjugated diolefin monomer, wherein the repeat units in the second block are hydrogenated, and wherein the repeat units in the second block are elastomeric in nature, (B) a crosslinkable elastomer, and (C) an oil, to produce an un-crosslinked three component blend; and (2) dynamically crosslinking the crosslinkable elastomer in the un-crosslinked three component blend during a thermo-mechanical mixing step; wherein the thermoplastic elastomer composition is void of thermoplastic resins.

The present invention relates to a phosphorus-free composite antiincrustation corrosion inhibitor. It includes polyaspartic acid and/or polyepoxysuccinic acid and at least one kind of scale inhibition and dispersion agent, in which the scale inbibition and dispersion agent is polymer containing carboxylic acid group, or it includes polyaspartic acid and/or polyepoxysuccinic acid, zinc salt, molybdate or tungstate and polymer containing carboxylic acid group. Said invention is applicable to treatment of circulating cooling water.

The present invention relates to a composite insulation material. The composite insulation material includes a syntactic foam component and a plurality of aerogel inserts. The present invention also relates to a method of making a composite insulation material. The present invention further relates to a method for enhancing the flexibility of a solid material.

A golf ball includes a ‘dual core’ formed from an inner core layer and an outer core layer. The inner core has an outer surface and a center and is typically formed from a substantially-homogenous rubber composition such that the center of the core has a hardness of about 72 Shore C to about 78 Shore C and a trans content of about 5% to 9%, and the outer surface of the inner core has a trans content of about 5% to 9%. The trans content of the outer surface and the center of the inner core are preferably within 2% of each other and, more preferably are substantially the same to define a zero trans gradient along a radius of the inner core.

The present invention is directed to two component coating compositions that cure under ambient conditions and more particularly to those having low VOC (volatile organic content) that are suitable for use in automotive refinish and Original Equipment Manufacturing (OEM) applications. The coating composition includes crosslinkable and crosslinking components, wherein the crosslinkable component includes a low polydispersity, low molecular weight copolymer having on an average 2 to 25 functional groups, such as hydroxyl, carboxyl, acetoacetoxy, primary and secondary amine, and epoxy. The copolymer is polymerized from a monomer mixture that includes one or more non-functional acrylate monomers and one or more functional methacrylate monomers provided with the functional groups. The crosslinking component includes polyisocyanate, polyamine, ketimine, melamine, epoxy, polyacid or a combination thereof. The invention is also directed to coating produced from the coating composition.

A heel counter is roughly a U-shaped cup. The bottom of the cup is a support part with the effect of uniformly distributing pressure on the heel. The cup rim embraces the surrounding of the heel to provide protection and stability. The cup rim has several hollow parts to reduce the overall hardness, to enhance comfort by providing suitable elasticity, and to circulate air. The bottom surface of the support part of the cup is provided with arc-shaped supporting elastic plate to alleviate pressure on the heel by absorbing shocks. A midfoot and phalanx support part is formed from the cup bottom toward the midfoot. A lateral longitudinal arc support part is formed from the outer side of the cup bottom toward the midfoot.

An objective of the present invention is to provide a golf ball striking a balance between the flight distance on the driver shots and the approach performance on the approach shots and having the excellent shot feeling and durability. The present invention provides a golf ball comprising a core consisting of a center and a surrounding layer covering the center; at least one intermediate layer covering the core; and a cover covering the intermediate layer; wherein at least one piece or one layer of the intermediate layer is formed from a highly elastic intermediate layer composition that contains (A) a highly elastic resin having a flexural modulus in a range from 700 MPa to 5,000 MPa and (B) an ionomer resin having a flexural modulus in a range from 150 MPa to 1,000 MPa in a content ratio ((A)/(B)) of (A) the highly elastic resin to (B) the ionomer resin (B) being (20 mass % to 80 mass %)/(80 mass % to 20 mass %) (the total is 100 mass %), and wherein a surface hardness (Hm) of the intermediate layer and a surface hardness (Hs) of the core satisfy the equation: Hm≧Hs, and the cover has a slab hardness (Hc) of 45 or less in Shore D hardness.

The present invention provides a preparation method for aqueous polyurethane. The method comprises the following steps: mixing aliphatic diisocyanate, an aliphatic polyol, dimethylol propionic acid and a catalyst, and carrying out a reaction to obtain a prepolymer; adding a neutralizing agent to the prepolymer, and carrying out a stirring reaction to obtain an intermediate product; adding water and a chain extender to the intermediate product, stirring and dispersing to obtain the aqueous polyurethane, wherein the chain extender is polyoxyethylene polyamine or polyoxypropylene polyamine. The invention further provides the aqueous polyurethane prepared by the method. According to the present invention, the bulk polymerization method is adopted, the use of the organic solvent is not required, and no environmental pollution is generated; the polyoxyethylene polyamine or the polyoxypropylene polyamine is adopted as the chain extender, and is used for emulsion chain extending, such that the obtained polyurethane emulsion has good film-forming flexibility, the mechanical property of the obtained polyurethane can not be reduced, the large R value is not required, and the final produced polyurethane film is soft.

A method for treating oil field produced wastewater containing high organics, silica, boron, hardness, and suspended and dissolved solids by applying three membrane types in series is provided. First, Ultrafiltration (UF) is applied to remove oil and suspended solids. Second, Nanofiltration (NF) is used to reject hardness, soluble iron and organics. Subsequently, the NF permeate is treated by a double pass Reverse Osmosis (RO) process. The first-pass is applied at a high temperature of about 180° F. and low pH to remove the majority of the salts and silica. Then the feed is chilled, stripped of carbon dioxide and finally pH adjusted to 10 to maximize boron removal.

The invention discloses a method for treating coal gasification wastewater. The method comprises steps of: (1) lime softening by first adding lime milk to the coal gasification wastewater to conduct chemical precipitation on calcium salt and magnesium salt with the lime milk, standing the precipitation and filtering an supernatant; (2) ozone oxidation by sending the wastewater filtered in the step (1) into an ozone oxidation device for treatment; (3) MBBR treatment by sending the wastewater subjected to ozone oxidation into an MBBR for treatment; (4) coarse filtration; (5) continuous membrane filtration or ultrafiltration; (6) reverse osmosis; and (7) multi-effect evaporation by conducting multi-effect evaporation on the concentrate obtained by reverse osmosis treatment, and further crystallizing the concentrate obtained by multi-effect evaporation. The method of the invention can effectively remove the main pollutants such as COD, ammonia nitrogen and chroma in coal gasification wastewater, can also greatly reduce the salt content of the wastewater, ensure the efficient and long-term running of the double membranes, and achieve zero discharge of coal gasification wastewater.

The invention discloses a processing technology for a rear axle drive bevel gear which is characterized by including steps of selecting raw materials, forging a blank, normalizing, turning, cutting a gear, chamfering, rolling a spline, carburizing and quenching, tempering, blasting shots, straightening, annealing, finely turning an outer circle, threading, milling a locking groove, cleaning a thread, finely grinding an outer circle, roughly matching, shaving the gear, finely matching and rinsing, and obtaining a finished product after rinsing the a workpiece. By the processing technology, machining precision of threads of the rear axle drive bevel gear is improved and reaches a grade of H6; quenching to harden the carbon layer is totally omitted through machining after heat treatment; hardness of a product surface and a core is reduced after annealing, internal pressure of the gear is eliminated, and a metallographic structure of the core of the gear is improved; the processing technology for the gear axle drive bevel gear is high in precision, and requirements of assembling is favorably achieved; service life of the gear axle drive bevel gear is prolonged.

The invention relates to an annealing-free medium-high carbon steel plate making technology, and belongs to the technical field of steel rolling technologies. A technical scheme adopted in the invention is characterized in that the technology comprises the operations of heating furnace heating, vertical roll rolling, roughing scale removal, roughing rolling, intermediate cooling, precision rolling scale removal, precision rolling, laminar cooling, reeler reeling and concentrated pile cooling, the intermediate cooling operation is carried out after the roughing rolling operation and before the precision rolling scale removal operation and is realized through cooling plate blanks by a cooling device, and the cooling capability of the cooling device makes the temperature of the plate blanks decrease to below 840DEG C. The technology has the following beneficial effects: the elongation rate after fracture of produced products obviously rises, the hardness of the products decreases by 7.2-21%, the proportion of ferrite in the structure of the products is above 60%, ferrite crystal grains are appropriately coarsened, the pearlite colony is small and dispersed, and the cementite sheet in pearlite is attenuated, fragmented and partially granulated. An annealing operation after rolling can be avoided because of the low hardness and high plasticity in order to reach an online softening purpose.

The invention provides a permanent deformation cold resistance nitrile-butadiene rubber composition with low hardness and low compression, which contains nitrile-butadiene rubber, peroxides and auxiliary crosslinking agents; wherein, the auxiliary crosslinking agents are selected from one or a plurality of 1, 3-(citraconic maleimide methyl) benzene, meta phenylene bis maleimide, triallyl cyanurate and triallyl isocyanurate. The nitrile-butadiene rubber which is prepared by the nitrile-butadiene rubber composition has the advantages that peroxide curing system containing the auxiliary crosslinking agents of the invention can improve the cold resistance and has small compression permanent deformation; at the same time, the tensile strength and the elongation at break are large, and the fatigability is good. The advantages are not possessed by the curing systems that singly use peroxides and the combination of the peroxide sulphur and other auxiliary crosslinking agents.

The embodiment of the invention discloses a preparation method for lithium-based glass ceramic for dental prosthesis. The preparation method comprises: filling glass powder which is prepared in advance into a die, wherein the grain size of the glass powder is less than 50 microns; and pressing and moulding the powder under 50-500 Mpa to obtain a lithium-based glass ceramic blank; putting the lithium-based glass ceramic blank into a heating device to raise the temperature to 500-600 DEG C for first-time sintering at a temperature raising rate of 1-30 DEG C/min, wherein the insulating time of the first-time sintering is 10-120 minutes; and carrying out furnace cooling to prepare the lithium-based glass ceramic. Compared with lithium disilicate glass ceramic prepared in the prior art, the lithium-based glass ceramic prepared by the technical scheme is relatively low in strength, low in hardness, better in processability, more easy to mould and suitable for a processing room and a chair-side repairing system.

The invention relates to a high-temperature halogen-free flame-retardant polypropylene/ ethylene propylene diene rubber cable material and a preparation method thereof. The cable material comprises the following components in weight portion: 10 to 25 portions of polypropylene, 25 to 40 portions of ethylene propylene diene rubber, 30 to 40 portions of ammonium polyphosphate, 1 to 3 portions of silicone, 5 to 20 portions of rubber oil, 0.3 to 1.0 portion of cross linker, 0.2 to 2.5 portions of cross linking assistant, and 0.5 to 1.5 portions of processing assistant. The cable material is obtained through dynamic vulcanization, extrusion and granulation by a double-screw extruder. The cable material can pass a hot air ageing test at a temperature of 150 DEG C, can be used for a long term at a temperature of 125 DEG C, and is flexible and environment-friendly.

A method of complete bainite hardening of steel for use in bearings and other load carrying components, wherein bainite transformation is performed at a temperature just above the martensite formation temperature, transforming 25%-99% of the austenite into bainite at said temperature, and then increasing the temperature to speed up the transformation of the remaining austenite into bainite.

An electrically conductive silicone rubber composition comprises, at least, (A) 100 parts by weight of an organopolysiloxane having at least two alkenyl groups per molecule, (B) an organopolysiloxane having at least two silicon-bonded hydrogen atoms per molecule (an amount sufficient to cure the present composition), (C) a platinum based catalyst (an amount sufficient to promote the cure of the present composition), (D) 50 parts by weight to 5,000 parts by weight of a metal based electrically conductive filler, and (E) 5 parts by weight to 500 parts by weight of spherical silicone rubber particles with a surface active agent content of not more than 0.3 wt %.

The invention discloses a method for processing a percolate membrane treatment concentrated solution of a refuse landfill. The method comprises steps of adding an alkali into the percolate membrane treatment concentrated solution of a refuse landfill, and reacting to obtain a mixed liquor containing precipitate; micro-filtering the mixed liquor to obtain a first permeating liquor and a closure liquor; press-filtering for dehydrating the closure liquor through a plate frame so as to obtain a second permeating liquor and mud cakes, returning the second permeating liquor to the alkali adding step for recycling, and solidifying the mud cakes; adding an acid into the first permeating liquor, regulating the pH to be 6-9, and then concentrating the first permeating liquor through reverse osmosis to obtain a third permeating liquor and a concentrated liquor; discharging the third permeating liquor directly, and drying and solidifying the concentrated liquor. The method is simple, can improve the recovery rate of the percolate membrane treatment concentrated solution, and reduces damage to the reverse osmosis membranes; the quality of the effluent is stable and reaches the standard.

The disclosure is directed to radiation catheter devices, methods for controlled application of irradiation to tissue at a body site, such as a cavity formed after removal of tissue, e.g. cancer, using such radiation catheter devices, solutions for forming a more lubricious luminal surface and method for lining lumens of such devices to improve the frictional characteristics thereof. The catheter device includes a flexible elongated shaft which is formed of low durometer polymeric material, which can be readily folded or coiled for securing the shaft to or under the skin of the patient and a radiation lumen lined with high durometer polymeric material to improve the frictional characteristics. The elongated shaft has at least one inner lumen for receiving a radiation source which has a layer of high durometer polymeric material that provides lower surface friction to facilitate advancement of a radiation source therein.

The invention relates to a chemical mechanical polishing solution for large-sized silicon wafers and a preparation method thereof, and the chemical mechanical polishing solution is mainly applied to the ultraprecision machining of large-sized semiconductor silicon substrate slices, and can obtain a nanometer-level ultrasmooth surface. The polishing solution consists of the following components inpercentage by weight: 5 to 50 percent of silicon dioxide abrasive, 1 to 10 percent of pH value regulator, 0.01 to 5 percent of surfactant, 0.01 to 0.05 percent of cleaning auxiliary, 0.01 to 2 percent of chelator and the balance of deionized water; and the silicon dioxide is added in the state of silicasol. Under proper polishing technological conditions, the polishing solution prepared with the components according to the contents can obtain a high-quality polished surface and meet the requirement of the semiconductor industry on the surface quality and removal rate of silicon substrate slices, and moreover, the invention has the advantages of low cost, easy cleaning, low corrosiveness and the like, and has a good application prospect.

The invention discloses a manufacture method of recombinant dried beef. The method comprises the following steps: green beef or thawed beef is selected; regarding the beef sample quantity of 0.46mg/g as a reference, bromelain is weighed (specific activity unit: 1200Mu/g ) and diluted into bromelain solution, and then is injected into different parts of the beef; after being rolled and rubbed for 10 to 20 minutes, the beef reacts at the temperature of 40 DEG C for 1.5 hours; the beef is prickled; the prickled beef is dewatered and divided into two parts; one part is steamed and boiled until maturity, and cut and blended as beef grains; the other part of the green beef is dewatered and cut and blended as beef emulsion; the boiled and cut and blended beef grains and the green beef emulsion are evenly mixed; the proportion of the beef grains and the beef emulsion is 0.5-2: 1; TG enzyme is added to the beef by 2-10mg/g; the cooked and the fresh beef are jointed and shaped under the condition that the TG enzyme and the pressure are 1.5-3 N/cm<2>; and then the beef is steamed and boiled, roasted and packaged. The dried beef has the advantages of soft mouth feel, low hardness and bright color and luster.

Disclosed is a method for heat-treating a ring-shaped member, which makes it possible to form a quench-hardened region having a uniform annular shape in the circumferential direction, while the production costs in terms of the quenching apparatus are kept down. The method includes the following steps: a step in which a coil which is disposed in such a way as to face a rolling contact surface of a ring-shaped formed body made of steel and which performs induction heating of the formed body is rotated relative to the formed body in the circumferential direction thereof, whereby an annular heating region which is heated to a temperature at or above an A₁ point is formed on the formed body; and a step in which the whole of the heating region is simultaneously cooled to a temperature at or below an M_S point.

An electroconductive rubber roller constituted of an electroconductive metal core and an electroconductive crosslinked rubber layer including an epichlorohydrin-based rubber, wherein the epichlorohydrin-based rubber is at least one copolymer selected from the group consisting of an epichlorohydrin-ethylene oxide copolymer and an epichlorohydrin-ethylene oxide-allyl glycidyl ether ternary copolymer. The ethylene oxide unit in the epichlorohydrin-based rubber is in a content of 40 to 90 mol %, and, the electroconductive crosslinked rubber layer has a heat quantity (enthalpy: ΔH) 5 mJ/mg or less as measured by a differential scanning calorimetry (DSC) and indicated by a peak appearing within a range of −20 to 150° C.

An object of the present invention is to provide a foam having reduced hardness and density, and an improved resistance to compression set, as well as a foam composition for producing such a foam. This object is achieved by a foam composition described below. The foam composition of the present invention comprises a thermoplastic elastomer which has a side chain containing imino group and/or a nitrogen-containing heterocycle, and a carbonyl-containing group; and a blowing agent.

The invention discloses an antiskid anti-abrasion EVA shoe sole material. The antiskid anti-abrasion EVA shoe sole material is mainly prepared from EVA, POE, EPDM, an anti-abrasion agent, talcum powder, propylenebutadiene rubber, an odorless cross-linking agent, stearic acid, active zinc oxide and a foaming agent in steps of mixing and foaming. The content of each component is as follows: 10 to 30 parts by weight of EVA, 6 to 15 parts by weight of POE, 10 to 20 parts by weight of EPDM, 0.6 to 1.2 parts by weight of anti-abrasion agent, 15 to 25 parts by weight of talcum powder, 3 to 8 parts by weight of propylenebutadiene rubber, 0.2 to 0.5 parts by weight of odorless cross-linking agent, 0.3 to 0.8 parts by weight of stearate acid, 0.4 to 0.8 parts by weight of active zinc oxide and 0.5 to 1 part by weight of foaming agent. The preparation method mainly comprises three steps of internal mixing, open mixing and oil pressing, and the EVA shoe sole material with hardness of 65 to 70 degrees is finally obtained by virtue of foaming and vulcanization. The prepared EVA shoe sole material is modified in a co-polymerization way by utilizing the rubber elastomer, and corresponding functional additives are added into the raw material formula, so that the antiskid anti-abrasion EVA shoe sole material has advantages of small hardness, high elasticity, good abrasion resistance, good antiskid performance, good dimensional stability, good mechanical performance, long service life and the like.

The invention relates to a CMP (Chemical-Mechanical Polishing) polishing liquid with mixed grinding materials for an alkaline sapphire substrate and a preparation method thereof. The CMP polishing liquid consists of the following components in percentage by weight: 0.5-35% of a main grinding material, 0.015-0.09% of an auxiliary grinding material, 0.005-0.05% of a chelating agent, 0.005-0.05% of a surfactant, 0.01-0.5% of a pH adjustor, and the balance of deionized water, wherein the main grinding material is a nano SiO2 sol and the auxiliary grinding material is an Al2O3 sol. The auxiliary grinding material, the chelating agent, the surfactant and the alkaline pH adjustor are sequentially added into a nanosilicon sol suspension. In the polishing liquid, as the content of the main grinding material SiO2 sol is reduced, the phenomenon that the polishing liquid residue on the surface of the substrate after CMP is relatively severe is reduced to facilitate subsequent cleaning. A less amount of the auxiliary grinding material Al2O3 is added, so that the polishing speed is remarkably increased, and the roughness of the substrate after CMP is reduced.

The invention discloses an ultra-thin telephone receiver. A driving mechanism of the ultra-thin telephone receiver comprises an armature section and a coil section, wherein the armature section is E-shaped and comprises a base portion, two wing portions and a middle portion, the base portion, the two wing portions and the middle portion are formed in an integrated mode, the middle portion comprises a root part located on the base portion, the root part extends forward to form a vibrating diaphragm part, and the coil section is arranged on the root part in a sleeved mode at intervals. A shell of the ultra-thin telephone receiver comprises an upper shell and a lower shell, wherein the upper shell is arranged at the top of the driving mechanism in a covered mode, and comprises a cover plate and cover edges which are formed by extending downward from the periphery of the cover plate, a first magnet is fixedly connected to the inner wall, covered at the top of the vibrating diaphragm part, of a section of the cover plate, the upper shell is made of magnetically soft alloy, the lower shell is arranged at the bottom of the driving mechanism in a covered mode relative to the upper shell, a second magnet is fixedly connected to the inner wall of the lower shell relative to the first magnet, the lower shell is made of magnetically soft alloy, and a sounding hole is formed in the upper shell or the lower shell. According to the ultra-thin telephone receiver, the thickness of an existing telephone receiver is reduced to the largest extent, and the ultra-thin telephone receiver is more suitable for the structure of a mobile phone with a narrow frame or a mobile phone which is nearly frameless.

The invention relates to a porous nano composite abrasive particle containing polishing active elements, a polishing solution composition and a preparation method thereof. The composite abrasive particle is: a. composite silicon oxide abrasive particle formed by silicon oxide and oxide containing polishing active elements; or b. composite aluminum oxide abrasive particle formed by aluminum oxide and oxide containing polishing active elements. The composite abrasive particle is in a nano pore structure, and can lower the abrasive hardness and reduce the excess collision of the inorganic compact abrasive particle onto the substrate, thereby reducing the polishing damage; the abrasive particle contains iron or copper, cerium, nickel, titanium, silver or any other polishing active element in the aspect of chemical composition, and can enhance the chemical action of the abrasive particle; and the porous structure of the abrasive particle can adsorb and store the polishing solution component to enhance the chemical activity of the abrasive particle. The enhancement of the chemical action can increase the polishing speed of the abrasive particle, and the abrasive particle designed in such a way can simultaneously achieve the goals of high speed and high precision in polishing. When being used for polishing an electronic device, such as a hard disk substrate, the polishing solution provided by the invention can effectively lower the surface roughness of the memory hard disk substrate, and has high polishing speed.

A recess-projection fitting structure includes projections extending in an axial direction on an outer diameter surface of a shaft section of an outer joint member or an inner diameter surface of a hole of a hub wheel, press-fitting the projections in another of the outer diameter surface and the inner diameter surface along the axial direction, and forming recesses brought into contact and fitted with the projections by press fitting in the other of the outer diameter surface and the inner diameter surface, the projections and the recesses being held in contact with each other through intermediation. An outer member is fitted in a hole of a knuckle of a vehicle. Annular grooves are formed respectively in an outer peripheral surface of the outer member and an inner peripheral surface of the hole of the knuckle, and a snap ring is engaged with both the annular grooves.