8results about How to "High Young's modulus" patented technology

This invention provides glass compositions with low linear expansion and high Young's modulus, suitable for mass production. The invention provides, expressed as a percentage by mass: i) glass compositions containing 56≤SiO2≤70, 0.1≤B2O3≤8, 15≤Al2O3≤24, 4≤MgO≤14, 0≤CaO≤4, 0≤ZnO≤10, 0≤(Li2O+Na2O+K2O)≤4, and 0.1≤ZrO2≤5, and substantially free of TiO2; ii) glass compositions containing 56≤SiO2≤70, 0.1≤B2O3≤8, 15≤Al2O3≤... 24. Glass compositions containing the following components: 4≤MgO≤14, 0≤CaO≤4, 0.1≤ZnO≤3, 0≤(Li2O+Na2O+K2O)≤4, and substantially not containing TiO2 and ZrO2; iii) Glass compositions containing the following components: 56≤SiO2≤70, 0.1≤B2O3≤8, 15≤Al2O3≤24, 4≤MgO≤14, 0≤CaO≤4, 0≤ZnO≤10, 0≤(Li2O+Na2O+K2O)≤4, 1≤ZrO2≤5.

The application provides a monomer containing a pyrrolidone ring, a degradable long-chain random copolyester and a preparation method. The copolyester has the structure shown in the following formula: wherein R1 comprises an ether bond or a thioether bond, R2 and R3 comprise a linear alkyl group containing 10-30 carbon atoms, x and y are both integers from 1 to 10, and m is an integer from 20 to 100. The degradable long-chain random copolyester provided by the application has a high molecular weight, excellent crystallinity, a high Young's modulus and water vapor gas barrier property, and good hydrolysis sensitivity, and the biodegradation rate can be controlled in a wide range, so that the copolyester can be widely applied to the preparation of agricultural mulching films, shopping bags and other products. Meanwhile, the preparation process is simple, easy to operate, the reaction conditions are mild, and the yield is high.

The application discloses a preparation process of a lead zirconate titanate (PZT) film layer, a film layer structure and application thereof, and relates to the technical field of piezoelectric material film layer preparation. The preparation process comprises the following steps: S1, forming a low tensile stress silicon nitride layer on the surface of a substrate, which is used for homogenizing the in-plane stress gradient of a wafer; and S2, forming a piezoelectric functional layer on the surface of the silicon nitride layer in a sputtering mode, wherein the piezoelectric thin film material of the piezoelectric functional layer is lead zirconate titanate (PZT). The film layer structure and the preparation process thereof adopt the silicon nitride layer to relieve the thermal mismatch stress of the piezoelectric functional layer system, can improve the piezoelectric constant e31 of the central region of the wafer, and improve the uniformity of the whole wafer.

The invention relates to the technical field of medical health care products, in particular to an anticancer composition containing phellinus igniarius extract and total ginsenoside and application of the anticancer composition. The anticancer composition comprises a phellinus igniarius extract and total saponins of ginseng. The mass ratio of the phellinus igniarius extract to the total ginsenoside is 1: (0.5-2); the phellinus igniarius extract is obtained by taking artificially cultivated phellinus igniarius as a raw material through ultrasonic-assisted extraction and reflux extraction in stages; the extraction solvent is selected from water or an ethanol water solution with the ethanol concentration not exceeding 40%. The anticancer composition provided by the invention has remarkable in-vitro anticancer activity and low toxicity to normal cells.

This application relates to glass-ceramics, glass-ceramic products, and their applications. The aforementioned glass-ceramics and glass-ceramic products, expressed as a percentage by weight, contain the following components: SiO2: 46%–60%; Al2O3: 20%–26%; MgO: 6.5%–14%; ZnO: 0.1%–8%; Li2O: greater than or equal to 0.1% but less than 5%; TiO2: greater than 0% but less than 5%; CaO: 0–4.5%, wherein the ratio of (SiO2+Al2O3) / (MgO+ZnO+CaO) is 4.0–8.0, and the ratio of Li2O / TiO2 is 0.3–2.5. Through reasonable component design, the glass-ceramics and glass-ceramic products obtained in this application possess high Young's modulus and ultraviolet light transmittance, making them suitable for fabricating large-size glass wafers and meeting the application needs of semiconductor manufacturing and other fields.

This invention discloses a modified ethylene glycol 2,5-furandicarboxylate material, its preparation method, and its applications, belonging to the field of polymer materials technology. This invention solves the problem that copolymerized FDCA polyester materials often struggle to simultaneously achieve high elongation at break and high Young's modulus. In this invention, under an inert gas atmosphere, 2,5-furandicarboxylic acid monomer, ethylene glycol monomer, and catalyst are mixed and heated to the reaction temperature for esterification to obtain an esterified product. Then, an anhydride monomer is added to the reaction system to continue the reaction, yielding a ternary esterified product. Subsequently, according to the polycondensation reaction conditions, the temperature is increased and the pressure is decreased to carry out a polycondensation reaction, obtaining the modified ethylene glycol 2,5-furandicarboxylate material. The modified ethylene glycol 2,5-furandicarboxylate material obtained by this invention exhibits high elongation at break and high Young's modulus, and can be used in packaging materials, textile materials, or engineering plastics.

The present application belongs to the technical field of synthesis of all-organic polymer dielectric film, and particularly relates to a copolymerized polyamide with dielectric function containing nylon 1 chain segment and a preparation method, the preparation method of the dielectric polyamide film containing nylon 1 chain segment comprising the following steps: synthesis of nylon 1 with different polymerization degrees, butane diacid anhydride end-capping nylon 1, and salt formation of the end-capped product (referred to as "PA1 diacid") and piperazine, copolycondensation reaction of piperazine-PA1 diacid salt and piperazine-dodecanedioic acid salt, and hot-pressing forming, etc. In the present application, the piperazine-PA1 diacid salt and the piperazine-dodecanedioic acid salt are copolycondensed through high temperature and high pressure, the high dielectric constant of the nylon 1 chain segment is combined with the unique low dielectric loss of the piperazine nylon, the nylon 1 is embedded into the piperazine nylon matrix as a dielectric function chain segment, and the dielectric polyamide film containing the nylon 1 chain segment is directly prepared through simple hot-pressing forming.

The invention discloses a Fe-Sn modified composite Li negative electrode material and a preparation method and application thereof, and belongs to the technical field of lithium metal batteries, the preparation method comprises the following steps: step A, adding triethylamine and fluoroethylene carbonate into ethylene glycol dimethyl ether, and stirring to obtain a composite solvent; b, FeF3 and SnF2 are added into the composite solvent obtained in the step A, heating and stirring are conducted, and Fe-Sn composite liquid is obtained; and step C, dropping the Fe-Sn composite liquid obtained in the step B on the surface of a lithium sheet, and standing to obtain the Fe-Sn modified composite negative electrode Li material, so as to solve the technical problems that lithium dendrites cause short-circuit potential safety hazards, the electrode structure is damaged by sudden change of lithium volume, the cycle life is shortened, lithium consumption and performance degradation are intensified by repeated damage of an unstable SEI film, and HF is generated by reaction to corrode a battery assembly.