478results about How to "Reduced thermal stability" patented technology

The present disclosure provides a method that includes forming first and second gate structures over first and second regions, respectively, removing a first dummy gate and first dummy dielectric from the first gate structure thereby forming a first trench and removing a second dummy gate and second dummy dielectric from the second gate structure thereby forming a second trench, forming a gate layer to partially fill the first and second trenches, forming a material layer to fill the remainder of the first and second trenches, removing a portion of the material layer such that a remaining portion of the material layer protects a first portion of the gate layer located at a bottom portion of the first and second trenches, removing a second portion of the gate layer, removing the remaining portion of the material layer from the first and second trenches.

A novel three-terminal SOT-MRAM memory cell with a unique magnetic stabilization layer or structure is proposed. A complementary magnetic footprint of the data storage layer for the memory cell is able to be created within the magnetic stabilization layer or structure by the magnetic field from the storage layer to enhance the magnetic and thermal stability of the memory cell. Several designs for both perpendicular and in-plane SOT-MRAM memory cell have been invented. With proper wire connection and sensing arrangement, the proposed memory cell is capable of forming not only the 2D array but also 3D array.

Multilayer optical films are comprised of materials with glass transition temperatures below room temperature (<30° C.). The high refractive index polymers are unique in that they exhibit mechanical properties similar to other low Tg semi-crystalline polymers, yet have significant birefringence (>0.05) when strain induced oriented. Novel combinations of comonomers for thermoplastics control the rate of crystallinity for improved processability and flexibility, giving the films crease and crumple recovery advantages.

The invention provides a type of lithium-ion battery cathode materials applicable to a high charge cut-off voltage. The cathode materials comprises two active substances of LiCoO₂ and Li (NixCoyMn1-x-y)O₂, where 0.3≦x≦0.8, 0.1≦y≦0.4, and 0.6≦x+y≦0.9. Both LiCoO2 and Li(NixCoyMn1-x-y)O2 are doped with element M and then treated by surface coating with the oxide, sulfide, fluoride of element M′ or phosphate. The element M is at least one of the Mg, Ti, Al, Zr, B, La, Ce, Y, P, S, N or F while the element M′ is at least one of the Al, Ti, Mg, Zr, B, Si, Fe, La, Ce or Y. The cathode materials provided herein, having the advantages of excellent cycling performance and low cell swelling against high temperature, can help to remarkably increase the energy density of lithium-ion batteries. The invention also discloses a lithium-ion battery containing such cathode materials.

An object of the invention is to provide a flame-retardant polycarbonate resin composition which can provide a sliding property of a molding product formed of a flame-retardant resin composition obtained by blending a polycarbonate resin and a styrene resin with a phosphate ester compound and having a good flowability without decreasing an appearance of a molding product. The invention relates to a flame-retardant polycarbonate resin composition including 100 parts by weight of a resin composed of (A) from 60 to 99% by weight of a polycarbonate resin and (B) from 40 to 1% by weight of a styrene resin, (C) from 1 to 30 parts by weight of a phosphate ester compound and (D) from 0.3 to 3 parts by weight of a silicone oil having a viscosity of from 1,000 to 20,000 cs.

This invention relates to organometallic compounds comprising at least one metal or metalloid and at least one substituted anionic 6 electron donor ligand having sufficient substitution (i) to impart decreased carbon concentration in a film or coating produced by decomposing said compound, (ii) to impart decreased resistivity in a film or coating produced by decomposing said compound, or (iii) to impart increased crystallinity in a film or coating produced by decomposing said compound. The organometallic compounds are useful in semiconductor applications as chemical vapor or atomic layer deposition precursors for film depositions.

Described is a method for the production of pure or mixed metal oxides, wherein at least one metal precursor that is a metal carboxylate with a mean carbon value per carboxylate group of at least 3, e.g. the 2-ethyl hexanoic acid salt, is formed into droplets and e.g. flame oxidized. The method is performed at viscosities prior to droplet formation of usually less than 40 mPa s, obtained by heating and/or addition of one or more low viscosity solvents with adequately high enthalpy.

An organic electroluminescent device including a substrate, an anode, a cathode, a hole transport layer, an electron transport layer and an emission layer is provided. The anode and the cathode are disposed on the substrate. The hole transport layer is disposed between the anode and the cathode. The electron transport layer is disposed between the hole transport layer and the cathode. The emission layer is disposed between the hole transport layer and the electron transport layer. The chemical structure of the dopant is represented by formula [I]: “M” represents a metal atom, m is smaller than or equal to the ligand number of “M”, n is smaller than m. “Y1” is selected from aryl or heteroaryl. “Y2” and “Y3” are respectively selected from nitro-containing heterocyclic ring. “X”, “R1”, “R2” and “R3” are respectively selected from any substituent group or hydrogen. “A” is selected from aryl, heteroaryl or nitro-containing heterocyclic group.

The invention discloses a method for preparing a high-toughness thermoplastic fluorine-containing polyurethane elastomer, which is characterized in that a bulk polymerization two-step method is adopted to synthesize the fluorine-containing polyurethane elastomer, the isocyanate index is 0.98, and the hard segment content is between 20 and 40 weight percent. The method comprises the following steps of: weighing 6 to 40 parts of non-fluorine macromolecular polylol and/or 30 to 80 parts of fluorine-containing polyether diol in a reactor, performing vacuum dehydration on the mixture for 2h at thetemperature of 120 DEG C, cooling the mixture to be between 70 and 100 DEG C, adding 16 to 33 parts of polyisocyanate into the mixture, stirring the mixture to react for 3h, heating the mixture to bebetween 120 and 140 DEG C, adding 0.1 to 15 parts of low molecular (fluorine-containing) diol chain extender into the mixture, uniformly stirring the mixture, then dumping the mixture into a preheated container, and performing vacuum baking for 20 hours at the temperature of between 120 and 140 DEG C to obtain the high-toughness thermoplastic fluorine-containing polyurethane elastomer.

A lithium secondary battery exhibiting very high safety, which is ensured by restraining both the generation of flammable gas caused by the decomposition of an electrolyte, and the emission of oxygen from a positive active material even during overcharging. The lithium secondary battery includes a positive electrode of which an active material is a lithium transition metal composite oxide, a negative electrode of which an active material is a carbon material, and a nonaqueous electrolyte containing an organic solvent in which a lithium salt is dissolved. The nonaqueous electrolyte contains at least one kind of conductive polymer-forming monomers which have an alkyl group and is electrochemically polymerizable on the positive electrode within a battery operation voltage, and at least one kind of film-forming agents which electrochemically decompose within the battery operation voltage to form films on a surface of the negative electrode.

The invented method for measuring the health of a solid rocket propellant includes embedding at least one piezoelectric capacitance sensor in the propellant, where the capacitance of the sensor is a function of a modulus of the propellant, and where the position is selected to measure manifestations of stress failure as a consequence of changes in the shear modulus. The capacitance of the sensor is measured at a predetermined frequency. The capacitance of the piezoelectric capacitance sensor is converted into a digital representation which is then converted into the digital representation of a modulus (or gradient modulus). In subsequent analysis, the modulus (or gradient of the modulus) is correlated to the health of the solid rocket propellant.

The invention discloses a biodegradable composition and a preparation method thereof, which consist of a biodegradable homopolyester (A), a biodegradable copolyester (B) and a chain extender (C), the total weight of which is 100 parts by mass Calculated, containing (A+B) is 95.0~99.9 parts and containing C is 0.1~5.0 parts, wherein the ratio of A:B is in the range of 1:9~9:1. The present invention finds that the compounding of biodegradable homopolyester with faster biodegradation rate and biodegradable copolyester with better processability in different proportions can not only endow the composition with proper biodegradation rate, but also improve the composition The physical properties and processing performance can be properly adjusted according to the requirements of different processing and application fields; we also found that by introducing a chain extender with long chain characteristics into the biodegradable resin composition, the combination after chain extension can be avoided It can prevent unnecessary gel phenomenon during processing and improve the heat resistance and stability of the material.

The invention discloses a lithium ion battery and a preparation method thereof. The lithium ion battery comprises a shell, ionic liquid electrolyte, positive plates, negative plates and diaphragms, wherein the ionic liquid electrolyte, the positive plates, the negative plates and the diaphragms are coated in the shell; the diaphragms are used for dividing the positive plates from the negative plates; each positive plate comprises a positive substrate and a positive coating which is combined on the surface of the positive substrate; the positive coating comprises a LiMPO4-graphene composite, wherein M is at least one of Fe, Co, Mn, Ni and V; each negative plate comprises a negative substrate and a negative coating which is combined on the surface of the negative substrate; and the negative coating comprises a Li4Ti5O12-graphene composite. The invention also discloses a preparation method for the Li4Ti5O12-graphene composite. The lithium ion battery has high energy density, high power density, better circulation performance and stable performance. The preparation method for the Li4Ti5O12-graphene composite is a simple in process and has high production efficiency.

A method for preparing conductive concave-clay nanomaterial includes scattering concave-clay aggregate to be concave-clay bar nanocrystal, using concave-clay bar nanocrystal as core to clad a layer of conductive compound precursor on surface of said nanocrystal by utilizing chemical coprecipitation technique and using high temperature doping to form new one-dimensional conductive concave-clay nanomaterial.

The invention discloses a halogen-free flame retardant epoxy resin composite and a flexible copper clad laminate prepared from same. The invention is characterized that hydantoin epoxy resin is added in the existing composite and the hydantoin epoxy resin has the advantage that the viscosity is low, the manufacturability is good; the thermal stability is good, the thermostability is high; the weather resistance is good, the hydantoin epoxy resin can be shined by sunlight and ultraviolet light without yellowing and chalking; the hydantoin epoxy resin can be is resistant to salt fog, the corrosion resistance is outstanding, the product has low toxicity and good flame retardant and the like. Therefore the hydantoin epoxy resin is very applicable to being used to prepare the halogen-free flame retardant epoxy resin composite. In addition, the invention also provides a polyimide copper clad laminate prepared by adopting the composite as adhesive, and the prepared copper clad laminate has the advantage of good flame retardant performance, high peel strength, good folding endurance and the like and can increase the electrical property of the copper clad laminate.

The present invention generally relates to gas generant compositions for inflators of occupant restraint systems, for example. A gas generating composition 12 formed in accordance with the present invention includes a carboxyl alkyl cellulosic binder. A vehicle occupant protection system 180, and other gas generating systems, incorporate the compositions of the present invention.

The invention relates to oil-in-water microemulsion. The oil-in-water microemulsion comprises the following components based on the total weight: A) 75 to 94 weight percent of aqueous phase, B) 0.5 to 5 weight percent of oil phase, C) 2 to 20 weight percent of oil-in-water nonionic emulsifier serving as a surfactant, and D) 0.2 to 2 weight percent of auxiliary nonionic surfactant or auxiliary zwitterionic surfactant with the hydrophile-lipophile balance (HLB) value more than or equal to 17, wherein the weight ratio of the component C to the component D is 5 to 20. The oil-in-water microemulsion of the invention has thermal stability, can maintain the transparent property of the oil-in-water microemulsion at room temperature in the condition of high temperature, and has no phenomenon of turbidity, emulsion breaking or demixing; moreover, the microemulsion has a simple formula and is easy to prepare; in addition, the microemulsion can remove cosmetics rapidly, has a cleaning effect of being washed easily, also can be used as a resident product, and provides a moisture feeling different from a common water aqua product.

The invention discloses a chopped glass fiber enhanced polyformaldehyde material. The chopped glass fiber enhanced polyformaldehyde material is prepared from the following raw materials in part by weight: 50 to 80 parts of copolyoxymethylene resin, 10 to 30 parts of chopped glass fiber, 1 to 10 parts of aldehyde absorption agent, 0.1 to 5 parts of glass fiber leakage prevention agent, 0.1 to 5 parts of coupling agent, and 0.1 to 5 parts of antioxidant. The polyformaldehyde is used as a matrix resin, and the high-strength polyformaldehyde material is prepared by enhancement of the chopped glass fiber; the tensile strength of the polyformaldehyde material can reach 125 MPa, flexural strength can reach 180 MPa, notch impact strength can reach 7.5kj/m<2>, and the polyformaldehyde material is good in comprehensive performance, and the polyformaldehyde material can meet the application requirements of the polyformaldehyde in automobile industry, electronic and electrical industry, precision machinery industry and other industry.

The invention provides a self-aligning metal oxide thin film transistor and a manufacturing method thereof. The method includes depositing a metal oxide semiconductor layer, a gate dielectric layer and a conducting thin film on a substrate and photoetching for imaging, spin-coating a dopant layer on the surface of a device, performing heat treatment to enable doping atoms in the spin-coated dopant layer to be diffused into a lower-layer material. The graphical gate electrode and the graphic gate dielectric exist, so that the doping atoms can only be diffused into metal oxide semiconductor areas on two sides of a channel area, doping of the metal oxide semiconductor on two sides of a channel is realized, resistivity of the metal oxide semiconductor is greatly lowered, and a self-aligned source-drain area is formed. The spin-coated dopant layer can also serve as a passivating layer of the device and is combined with subsequent processes like photoetching of contact holes and leading-out of electrodes and a wiring layer to manufacture a complete TFT (thin film transistor) device. The metal oxide thin film transistor prepared by the method has a self-aligning structure and is simple in process and compatible with large-area substrate process.

The invention discloses a color smoking treatment technology for a wood modification face layer. The color smoking treatment technology comprises the specific steps that firstly, to-be-treated wood is stacked and is blown through hot air; secondly, a layer of alcohol is brushed on the surface of the wood, cleaning is conducted through a sodium carbonate solution, then thorough scrubbing is conducted through water, and the wood modification face layer is obtained; thirdly, the overall wood is immersed in a phosphoric acid solution and taken out to be aired dry; fourthly, the wood is subjected to smoking, and the wood is subjected to further baking smoking through fuel materials; fifthly, the wood is placed in a heat treatment box to be tidily placed, rapid temperature rising is conducted, vacuum pumping is carried out, then slow temperature rising is conducted, and drying is conducted till absolute dry is achieved; sixthly, the surface of the wood subjected to heat treatment is wiped thoroughly through water; seventhly, the surface of the modification face layer is coated with a wood modification agent; and eighthly, the surface of the wood modification agent is coated with a layer of protective paint again. According to the color smoking treatment technology, physical treatment and oil paint treatment are combined, the permanency of the wood color is guaranteed, the wood waterproofness is guaranteed as well, and the wood is free of toxicity, environment-friendly, safe and sanitary.

The present invention relates to a process for recovering lactide from polylactide (PLA) or glycolide from polyglycolide (PGA), in which, in a first step, PLA or PGA is contacted with a hydrolysing medium and hydrolytically degraded to oligomers. In a further step, a cyclising depolymerisation of the oligomers obtained in the first step is effected to give lactide or glycolide. In addition, the present invention relates to an apparatus based on the combination of a hydrolysis apparatus with a depolymerisation reactor, with which the above-described process can be performed. The core of the process according to the invention is a partial hydrolysis of the polymeric materials originally used in combination with a cyclising depolymerisation.