656results about How to "Good high and low temperature performance" patented technology

The invention discloses polymer electrolyte for a lithium ion battery and a manufacturing method of a battery thereof. The electrolyte is formed by dissolving 0.5 to 15 percent of electrochemical inert polymer with the molecular weight of 5000 to 120000, 6 to 18 percent of lithium salt and various functional additives into a non-aqueous solvent. The additives comprise a film forming additive, an overcharging prevention additive, a flame-retardant additive, a lithium salt stabilizer and a surfactant for enhancing the soaking performance of the electrolyte. In order to solve the preparation difficulty and the performance defect of a polymer battery at present, the invention selects a polymer with proper molecular weight and other functional components of the electrolyte creatively. By the electrolyte, the battery can have the characteristics of a traditional polymer battery and a traditional liquid-state battery, the safety performance, the service life, the high / low-temperature performance and the magnification performance of the battery are comprehensively enhanced, and the preparation of the battery is simple and easy.

The invention discloses a room-temperature cured phenyl silicon resin conformal coating which comprises components A) a segmented copolymer of phenyl silicon resin and linear polyorganosiloxane or methyl phenyl silicon resin and linear polyorganosiloxane, B) alkoxy silane, C) a silane coupling agent containing amino or epoxy group, D) an organic titanium compound, E) organic phosphate flame retardant synergist, and (F) an organic hydrocarbon solvent or low molecular weight siloxane, wherein the organic hydrocarbon solvent is one or multiple of methylbenzene, dimethylbenzene, petroleum ether, cyclohexane and normal heptane; and the low molecular weight siloxane is a mixture of octamethyl-trisiloxan, octamethyl cyclotetrasiloxane or methyl cyclosiloxane. A product produced by the cured resin conformal coating of the invention has the advantages of very high transparency, good elasticity, tough and wearable surfaces as well as excellent high / low temperature performance, waterproofing, heat resistance, cold resistance, weathering resistance, ultraviolet ray resistance, medium resistance, irradiation resistance, flame retarding and the like.

The invention relates to a method for preparing modified asphalt by adopting a raw material with low asphaltene content. The method provided by the invention comprises the following steps of: carrying out thermal cracking reaction with reduced pressure residual oil, deoiled asphalt or mixture with the asphaltene content to be less than 5% at the temperature of 350-450 DEG C, then distilling and cutting to obtain tower bottom residue high-asphaltene-content component with the atmospheric boiling point of being higher than 350 DEG C; mixing the high-asphaltene-content component with a compatilizer at the temperature of 140-190 DEG C, adding a polymer modifier, shearing for 5-120 minutes at the temperature of 160-200 DEG C by adopting a high-speed shearing machine or a colloid mill, so as to disperse polymer into asphalt physically; and warming to a reaction temperature of 160-230 DEG C, adding stabilizer composition, stirring and reacting for 30-360 minutes, and carrying out chemical reaction on the polymer and the asphalt, so that the modified asphalt is obtained. The polymer modified asphalt obtained by the method provided by the invention has the advantages of high temperature storage stability, excellent high-and-low temperature performances and high ageing resistance, a technological process is simple, and production efficiency is high.

The invention relates to a high polymer chemically-modified asphalt composition and a preparation method thereof. The preparation method comprises the following steps: chemically modifying rubber, elastomer and base asphalt, and additionally matching stuffing and processing aids; premixing the materials by high polymer processing equipment to prepare the master batch of the modified asphalt; and fully dispersing the master batch into the asphalt by a high-speed shear mixer or by mechanical stirring. Or the modified asphalt material can be prepared by firstly pre-preparing a viscous liquid mixture of modified asphalt and then stirring and mixing the viscous liquid mixture of modified asphalt with the base asphalt. The modified asphalt material prepared by the invention has stable storage performance at high temperature, good performance at high temperature and low temperature, stable processing and preparation and simple and convenient method, and not only can be directly used in factory production but also can be used for road laying sites and in the construction of waterproofing materials.

A color cementing material for paving is prepared from epoxy resin, diluent, toughening agent, inorganic pigment and solidifying agent through stirring. Its advantages are ordinary-temp application, high adhesion and resistance to high temp, low temp and abrasion, and long service life.

The invention discloses lithium secondary battery overcharge protection electrolyte and a lithium secondary battery. The electrolyte contains electrolyte lithium salts, non-water organic solvents, film forming additives and overcharge protection additives, wherein the film forming additives are at least one kind of materials from TMSP (tris(trimethylsilyl) phosphate) and DTD (dioxathiolane 2,2-dioxide); the overcharge protection additives comprise oxidation and reduction shuttle type overcharge protection additives. The overcharge protection additives used in the electrolyte do not take part in any reaction process at the normal work voltage of 2.75 to 4.35V; when the battery charging voltage exceeds 4.4V, the oxidation and reduction shuttle type overcharge protection additives generate oxidation and reduction shuttle current distribution and voltage limitation on the surface of an electrode; the voltage is controlled to be within a range; the intense decomposition of the electrolyte inside the battery due to too high voltage can be avoided; further, the occurrence of safety problems of combustion, explosion and the like of the battery can be prevented.

The invention provides a pavement joint sealing material. The joint sealing material comprises the following components: 65 to 85 percent of petroleum asphalt, 9 to 18 percent of extract oil and 6 to 17 percent of styrene-butadiene-styrene segmented copolymer. The preparation method is as follows: the asphalt is heated to a temperature of between 100 and 200 DEG C; and the extract oil and the styrene-butadiene-styrene segmented copolymer are added and sheared for 35 to 95 minutes at a maintained preparation temperature of between 160 and 180 DEG C and at a shearing velocity of between 3,500 and 4,500 revolutions per minute until the mixture is uniformly mixed, and the pavement joint sealing material is obtained. The joint sealing material has the characteristics of simple components, good high temperature and low temperature resistance, and capability of being used for paving a pavement crack.

The invention provides oil-air lubricating grease which comprises the following component in percentage by weight: 80-90% of ester oil, 2-6% of inorganic thickener, 2-3% of structure improver, 1-5% of solid lubricating material, 0.2-0.5% of antioxidant, 1-5% of extreme pressure antiwear additive and 0.3-0.8% of anticorrosive agent. Since the oil-air lubricating grease is produced by using the ester oil having good biodegradability and fine high and low temperature performance as the base oil to be mixed with the environment-friendly inorganic thickener and additives, the oil-air lubricating grease has favorable biodegradability, can not cause environmental pollution, has favorable high and low temperature performance and low temperature pumpability, and has favorable extreme pressure wear resistance, thereby meeting the requirements of railway industry for the development direction of the lubricating grease and being capable of bringing more economic benefits and social benefits to railway interests. With the development of railway interests in China, the oil-air lubricating grease has fine application prospects.

The invention relates to a inflaming retarding modification pitch material that includes ground substance pitch, rubber modification agent and inflaming retarding modification agent. It adopts high speed shear mixing emulsion machine to make inflaming retarding modification pitch material that includes the following steps: dehydrating for 30min at 110 degree centigrade, heating to 175 degree centigrade, adding SBS, cutting for 10min, and adding inflaming modification agent and cutting for 5min. The invention has the advantages of high temperature stability, low temperature crack resistance, good covering ability to stone, and good anti-aging and excellent inflaming retarding ability.

The invention is applied to the field of road engineering materials, and discloses a high-permeability anti-aging modifier which is prepared from the following raw materials in parts by mass: 35-45 parts of a light component, 4-6 parts of a permeation promoting component, 20-25 parts of a plastification component, 4-5 parts of a tolerance component, 5-10 parts of an anti-aging component, 4-8 parts of water and 18-25 parts of an SBS component. The permeation effect of the high-permeability anti-aging modifier on aged asphalt is improved by virtue of polarization treatment of the light component, the regeneration effect is improved, meanwhile secondary aging of regenerated alphabet in the mixing and service process, and moreover the adhesion and toughness property of alphabet is improved. The Marshall stability of an anti-aging regenerated alphabet mixed material is up to 12KN, the flexural-tensile strain of the anti-aging regenerated alphabet mixed material is up to 2568mu epsilon, the anti-aging property of the anti-aging regenerated alphabet mixed material is remarkably improved, and application of a high-volume regenerated alphabet mixed material in a road surface layer structure is possible.

The invention discloses water-based zinc ion battery colloidal electrolyte, and a preparation method and an application thereof. The colloidal electrolyte material is formed by adding a clay materialto liquid electrolyte and uniformly mixing the same. The preparation method comprises the following steps: adding the clay material to conventional liquid electrolyte, thoroughly mixing the same understirring, and performing ageing to obtain uniform and stable colloidal electrolyte. The colloidal electrolyte prepared by the preparation method disclosed by the invention has higher ionic conductivity than liquid electrolyte, a colloidal zinc ion battery has excellent performance, good safety, stable performance and higher specific capacity, maintains excellent cycle stability and shelving performance or the like at high and low current densities, and meets the requirements of the water-based zinc ion energy storage technology with high energy density and long life, thereby having a broad application development space.