65 results about "Ethylene" patented technology

The invention discloses a phase change energy storage thermoplastic composite material, which comprises the following components in percentage by weight: 5 to 30 percent of polypropylene, 10 to 40 percent of ethylene-propylene-diene monomer (EPDM), 20 to 75 percent of paraffin, 0.5 to 10 percent of cross-linking agent, 0.01 to 2 percent of antioxidant, 0.01 to 10 percent of processing aid and 0 to 10 percent of crosslinking aid. The components are subjected to dynamic vulcanization in one step in melting mixing equipment to obtain the phase change energy storage thermoplastic composite material. The phase change energy storage thermoplastic composite material has the processing characteristics of thermoplastic plastics, and has high breaking elongation, moderate hardness and flexibility; and the paraffin is coated in the crosslinked EPDM to form microcapsules, and the phase change energy storage thermoplastic composite material is excellent in shape retaining performance and low in percolation ratio and has the better application prospects in fields of construction, chemical engineering, energy and the like.

The invention discloses a method for separating low-carbon olefin gas. The method is used for overcoming the disadvantages in existing low-carbon olefin separation methods that cryogenic separation is complicated in process flow, large in investment and the like. The method comprises the following steps: the low-carbon olefin gas enters a deethanization tower after the low-carbon olefin gas is compressed and dried, a tower bottom material flow of the deethanization tower is conveyed to a depropanization and propylene distillation system so as to separate polymer-grade propylene products, and a tower top material flow of the deethanization tower enters a demethanization tower; and a tower bottom material flow of the demethanization tower is conveyed to an acetylene converter and an ethylene distillation tower, a tower top material flow of the demethanization tower is conveyed to an absorption tower and is in contact with an absorbent, a tower top gaseous-phase material flow of the absorption tower is output or enters a fuel gas system, and a tower bottom material flow of the absorption tower is conveyed to the deethanization tower. The method disclosed by the invention has the advantage that the cryogenic separation is simple in process flow and small in investment and can be used for producing target products, such as polymer-grade ethylene, polymer-grade propylene and the like.

Herein is disclosed a modified ethylene vinyl alcohol polymer (EVOH) comprising an oxygen scavenging functional group. Preferably, the modified EVOH comprises structures IV, V, and VI:

wherein x is an integer greater than or equal to 1, y is an integer greater than or equal to 1, z is an integer greater than or equal to 1, and R comprises a cycloalkenyl group.

The modified EVOH is useful in oxygen barrier applications, such as a forming an oxygen barrier layer of a packaging article.

Also disclosed are methods of modifying ethylene vinyl alcohol polymers, and using the modified EVOH to make packaging articles with a superior barrier to entry by atmospheric oxygen.

The process of preparing high water solubility polyvinyl alcohol features that vinyl acetate monomer in 50-80 weight portions, methanol in 16-49 weight portions, vinyl monomer containing carboxyl group or amido group in 1-4 and initiator in 0.04-0.08 weight portion are reacted in a reactor equipped with thermometer, stirrer, reflux condensator and water bath at 60-65 deg.c for 3-6 hr; and the resultant is compounded with methanol into 30 % concentration solution and alcoholyzed with sodium hydroxide or potassium hydroxide to obtain high water solubility polyvinyl alcohol.

The invention discloses an aluminum plastic plate flame-retardant core layer and an aluminum-plastic plate, and belongs to the technical field of building fireproof materials, wherein the aluminum plastic plate flame-retardant core layer comprises, by weight, 30-50 parts of a matrix resin, 30-40 parts of a flame retardant agent, 0.5-1.5 parts of a flame retardant synergist, 1-2 parts of an anionicsurfactant, 2-4 parts of a compatibilizer, 1-2 parts of an antioxidant, and 0.5-1.5 parts of an antibacterial agent, wherein the matrix resin comprises low density polyethylene, polypropylene, an ethylene-octene copolymer and ethylene-ethyl acrylate according to a weight ratio of 6:2:1:1, and the flame retardant agent comprises magnesium hydroxide and expandable graphite according to a weight ratio of 6:1. According to the present invention, the prepared core layer has good mechanical property, can meet the requirements of the flame retardant B1 grade, and further has antibacterial property;and the aluminum plastic plate prepared from the flame retardant core layer has the good performances of the core layer, and further has the peel strength meeting the standard value.

The invention provides a ceramic floor tile with diatom mud and a method for manufacturing the ceramic floor tile. The ceramic floor tile comprises a base layer, a surface layer and an adhesion layer. The adhesion layer is arranged between the base layer and the surface layer, and the base layer is made of the diatom mud, feldspar, kaolin, quartz, clay, porcelain clay, moire stone, marble, broken iron, polystyrene and polyacrylate; the surface layer is made of the diatom mud, Kunshan stone, carborundum disc stone, colorants, pebble, glass cloth, plastic particles, polyurethane, ethylene-ethylic acid ethylene copolymers, silicon dioxide and aluminum oxide. The ceramic floor tile and the method have the advantages that the ceramic floor tile is made of nontoxic and pollution-free raw materials, and the diatom mud which is a main material is easy to obtain, is natural and pollution-free and has diversified sterilization, disinfection and waterproof merits; the ceramic floor tile is made of the easily available materials, processing and manufacturing processes are simple, and the ceramic floor tile manufactured by the aid of the method is high in smoothness and quality.

The present invention relates to polypropylene impact copolymer compositions which exhibit improved stiffness without degrading the impact resistance performance. The polypropylene impact copolymer comprises a matrix and a dispersed phase. The matrix comprises a polypropylene homopolymer or a propylene/alpha-olefin random copolymer which comprises more than 50 wt. % of units derived from propylene monomer. The matrix should have a relatively high crystallinity, preferably 50% or greater. The polypropylene homopolymer or a propylene/alpha-olefin random copolymer preferably has a MWD between 4 and 8, such as typically obtained using Ziegler-Natta catalysts. The dispersed phase in the impact copolymer comprises an ethylene-propylene copolymer which comprises from 45 to 70 wt. % of units derived from an ethylene monomer. Preferably the dispersed phase comprises from 20 to 50 percent by weight of the polypropylene impact copolymer.

The invention discloses a semiconductor photoelectric catalyzed compound electrode which can degrade ethene and sterilize synchronously and comprises a nanometer TiO2-Ag/ACF system and a nanometer TiO2/ACF system. Two systems are respectively provided with cathodes and anodes. The cathodes and the anodes of two systems are correspondingly connected with each other in parallel for forming a cathode port and an anode port of the compound electrode. The invention also discloses the preparation method of the semiconductor photoelectric catalyzed compound electrode. The semiconductor photoelectric catalyzed compound electrode of the invention has the advantages that the preparation technology is simple, the environment of materials adapted is friendly and innocuous, the structure of a reaction system is simple, the reaction speed is fast and the energy consumption is low; the semiconductor photoelectric catalyzed compound electrode of the invention can effectively solve the technical problems that the compounding probability of the semiconductor catalyzed material electron and hole pair is comparatively large, and nanometer TiO2 powder is difficult for fixing; the semiconductor photoelectric catalyzed compound electrode of the invention can degrade fresh environment ethene and can realize the effect of sterilizing at the same time.

The invention discloses a dual-pulse solid rocket engine soft interlayer ablation test device comprising an end combustion powder charging cavity, a test piece ablation cavity, a spray pipe cavity anda center cube connector (5). The end combustion powder charging cavity and the test piece ablation cavity are symmetrically installed at the two ends of a through hole of the center cube connector (5). The spray pipe cavity is connected with the third hole of the center cube connector (5). An end combustion powder charging cavity blocking cap (1), an end combustion powder charging cavity shell (2), the center cube connector (5), a spray pipe cavity shell (6), a spray pipe cavity rear section (9), a test piece ablation cavity shell (11) and a test piece ablation cavity blocking cap (14) of thetest device are all made of high-strength 45 steel material. An end combustion powder charging cavity liner (3), a spray pipe cavity liner (7), a spray pipe cavity rear section liner (10) and a testpiece ablation cavity liner (12) are all made of ethylene propylene terpolymer material. A spray pipe cavity throat liner (8) is made of graphite. Through the dual-pulse solid rocket engine soft interlayer ablation test device, the problems that the work process of a dual-pulse engine ii pulse soft interlayer is difficult to simulate and observe are solved.

The invention discloses a room-temperature preparation method of a metal-organic framework material preferentially adsorbing ethane. The preparation method comprises the following steps: dispersing zinc oxide and copper tetrafluoroborate hexahydrate in water and ethanol; dispersing quinoline-5-carboxylic acid in N,N-dimethylformamide; mixing the former solutions, and stirring an obtained mixed solution at room temperature; filtering the stirred solution to obtain a solid product, purifying, drying and performing vacuum activation to obtain the metal-organic framework material preferentially adsorbing the ethane. By the room-temperature preparation method, the metal-organic framework material with good alkane selectivity is prepared at room temperature, the synthesizing energy consumption of the material is reduced, and the prepared material has good adsorptive separation performance for ethylene-ethane gas at normal temperature and pressure. The material can preferentially adsorb the ethane from the ethylene-ethane mixed gas; in addition, the material has good water vapor stability, and still has a good crystal structure after 40-day direct exposure to air.

The invention discloses a surface treatment process for a lithium metal anode. The treatment process is characterized in comprising the following steps of preparing a protective layer liquid cement under dry room conditions, taking 50 to 90 parts by mass of polycarbonate, adding 5 to 10 parts by mass of polyethylene oxide to mechanically stir evenly, then adding 5 to 30 parts by mass of lithium salt to stir evenly, adding 5 to 40 parts by mass of fast ion conductor to stir evenly, adding 0.2 to 1 part by mass of vinylene carbonate to mechanically stir evenly, and then adding 0.2 to 1 part by mass of lithium oxalate borate. After the liquid cement is mechanically stirred evenly, the well-cut lithium piece is immersed in the liquid cement for 3 to 10 seconds, and pulled out to stand for 5 to10 seconds, and then flatted, and the lithium metal anode having a surface-coated protective layer is obtained.

The present invention provides a multilayer material which has a layer (A) that contains a silane coupling agent and an ethylene type zinc ionomer, and a layer (B) that contains at least one of an ethylene type magnesium ionomer or an ethylene type sodium ionomer. The multilayer material is suitable for use as an encapsulant for a solar cell or an interlayer for safety (laminated) glass. It is preferable that the multilayer material contains at least two of the layer (A) and at least one of the layer (B) and has a multilayered structure in which the layer (B) is interposed between the two of the layer (A).

The invention discloses a novel powder metallurgical gear. The novel powder metallurgical gear is prepared from iron powder, copper powder, molybdenum powder, vanadium powder, nickel powder, yttrium powder, aluminum powder, magnesium powder, cobalt powder, lead powder, steel slag powder, cupola slag powder, ferroalloy slag powder, modified tree ash powder, graphite powder, epoxidized butyl stearate, silicone oil, methylcellulose, aluminum stearate, polyethylene glycol, ethylene bisstearamide, stearic acid, carbon fibers, glass fibers, boron nitride, epoxy propoxy propyl trimethoxysilane, silica, manganese sulfide, acrylate, an inhibitor, a binder, an enhancer, a cutting agent, a lubricant, a coupling agent and a dispersion agent. According to the novel powder metallurgical gear, through the specific composition proportion, the novel powder metallurgical gear is even in overall density, high in density, high in ductility and area percentage reduction, good in wear resistance, strength and hardness, high in material utilization rate and suitable for quickly producing high-performance gears on a large scale.

The invention provides a laminated glass intermediate film with shielding capacity and high transparency as well as a preparation method thereof. The laminated glass intermediate film with shielding capacity and high transparency comprises raw materials in percentage by weight as follows: 93.2%-94.7% of EVA (ethylvinylacetate), 0.5%-2% of an inorganic additive, 2%-3% of an organic additive, 0.8%-1.6% of a peroxide crosslinking agent, 0.2%-0.5% of an assistant crosslinker, 0.2%-0.6% of a phosphite antioxidant, 0.2%-0.5% of an HALS (hindered amine light stabilizer) and 0.2%-0.6% of a coupling agent, wherein the content of vinyl acetate in EVA is 28%-33%. The laminated glass intermediate film has excellent shielding effect, has higher glass bonding strength and has good environmental aging resistance.

The invention discloses a high-temperature-resistant insulation material applied to power equipment. The high-temperature-resistant insulation material is prepared from the following components in parts by weight: 10-30 parts of polyethylene, 2-10 parts of polyperfluorinated ethylene propylene, 7-10 parts of mica powder, 3-6 parts of butyl rubber, 3-5 parts of inorganic glass fiber, 7-8 parts of ethylene-propylene-diene-terpolymer rubber, 3-10 parts of polytetrafluoroethylene powder, 3-10 parts of alkali-free glass fiber cloth, 3-10 parts of ultraviolet light absorbents, 3-10 parts of epoxy resin, 1.5-3.5 parts of antioxidants and 0.5-5.5 parts of plasticizers. The invention provides a high-temperature-resistant insulation material applied to power equipment and a preparation method thereof. The prepared insulation material has excellent mechanical property, insulation property and high-temperature-resistant property, also has water resistance, weathering ageing resistance and high abrasion resistance, and can meet the requirements of the power equipment on high-temperature resistance and excellent mechanical property.