254results about How to "Improve mechanical strength" patented technology

There are provided a sealing insulating film that is formed on a substrate and melted at a first heating temperature to have a flowability, and external terminals that are formed on the substrate, and connected to other electronic device at a second heating temperature higher than the first heating temperature, and surrounded by the sealing insulating film.

There is provided an antireflective laminate having a low refractive index and excellent mechanical strength, which comprises a coating layer of an ionizing radiation curing-type resin composition comprising ionizing radiation curing group-containing hollow silica fine particles. The antireflective laminate comprises a light transparent base material and at least a low refractive index layer having a refractive index of not more than 1.45 provided on the light transparent base material, wherein the low refractive index layer comprises an ionizing radiation curing-type resin composition and silica fine particles having an outer shell layer with the interior of the silica fine particles being porous or void, and, for a part or all of the silica fine particles, at least a part of the surface of the silica fine particle has been treated with an ionizing radiation curing group-containing silane coupling agent.

Magnetically and electromagnetically driven MEMS devices for reflecting light signals and for switching radio frequency (RF) signals are provided. In a preferred embodiment, a light reflecting device such as a mirror or micro-scanner comprises a plate operative to reflect light and at least two conductive flexural actuators connected to the plate and to a substrate and operative to impart a rotation or tilt motion to the plate under a force arising from the interaction of a current passing through the conductive flexural actuators and a magnetic field parallel to the substrate. An RF switch comprises a substrate and a membrane having a longitudinal dimension and a lateral dimension, the membrane positioned substantially parallel to and attached to the substrate and operative to provide at least two switching positions in response to actuation by a Lorenz force acting on it.

The invention discloses a thermoplastic light compound plate and the manufacturing method, characterized in that it comprises acupuncture fiber carpet dipped in double faced foam of thermoplastic glue liquid and thermoplastic glue liquid layer coated on the surface, the density of compound plate is 0.35-0.90g/cm3, the weight of fiber scattered in bunchiness is 15-45% of acupuncture fiber carpet. The merit of invention is very remarkable. Special super long fiber and bunchiness fiber with certain proportion are maintained in the material so that the mechanical performance of material can be improved. In addition, the material is provided with foam structure, very good effect of heat and sound insulation. The invention is also provided with environmental protection and recovery.

The carrier including a plurality of storage sections for individually accommodating electronic parts and a plurality of connecting sections for connecting the adjacent storage sections with each other. Each storage section is provided with a bottom wall and a side wall for defining a recess, and a support section for supporting the electronic part. The support section includes one rib continuously extending on the bottom wall along a generally rectangular profile, and a plurality of columnar projections projecting from the bottom wall to a height generally identical to one another and lower than a height of the rib. The bottom wall includes a first surface extending between the side wall and the rib to define a first region of the recess, and a second surface extending inside the rib to define a second region of the recess shallower than the first region. The columnar projections are arranged in a distributed manner on the second surface of the bottom wall. The bottom wall is locally thickened at portions corresponding to the rib and the columnar projections.

A process for preparing a binder which comprises a heterocondensate of silicon compounds and metal and/or boron compounds. The process comprises mixing a silicon component which comprises (A), at least one hydrolyzable silicon compound having a non-hydrolyzable polymerizable group, with water to form a hydrolysis product, and 15 s to 15 min after mixing (A) with water, the addition of (B), at least one compound of boron or a metal selected from Al, Ga, In, Tl, Ge, Ga, Sn, Pb, Ti, Zr, Hf, Sc, Y and La.

A semiconductor device includes at least three or more wiring layers stacked in an interlayer insulating film on a semiconductor substrate, a seal ring provided at the outer periphery of a chip region of the semiconductor substrate and a chip strength reinforcement provided in part of the chip region near the seal ring. The chip strength reinforcement is made of a plurality of dummy wiring structures and each of the plurality of dummy wiring structures is formed to extend across and within two or more of the wiring layers including one or none of the bottommost wiring layer and the topmost wiring layer using a via portion.

The invention discloses a graphene aerogel material and a preparation method thereof. The preparation method comprises the following steps: (1) preparing a precursor solution, namely mixing graphene oxide with a framework filler, and stirring uniformly to obtain the precursor solution; (2) preparing graphene hydrogel, namely adding a catalyst into the precursor solution, stirring uniformly, then pouring into a mold containing reinforcing fibers, sealing the mold, and heating the mold for reaction, thereby obtaining fiber reinforced graphene hydrogel; (3) preparing graphene ketone gel, namely putting the graphene hydrogel into an acetone solution to perform solvent replacement so as to obtain the graphene ketone gel; and (4) preparing graphene aerogel, namely taking out the graphene ketone gel, and drying to obtain a fiber reinforced graphene aerogel material. The invention also relates to the graphene aerogel material prepared by the method, and the graphene aerogel material is low in heat conductivity and high in strength, and can be used as a high-temperature heat insulating material.

The invention discloses radar stealth and infrared stealth integrated stealth tarpaulin and a making method thereof. The radar stealth and infrared stealth integrated stealth tarpaulin and the making method thereof are mainly used for achieving stealth of modern weapons such as vehicle-mounted guided missiles, tanks and aircrafts and improving the survival capacity, the defense penetration capacity and the deep strike capacity of the weapons. The integrated stealth tarpaulin comprises a camouflage layer, a radar and infrared integrated stealth layer and a base layer in sequence from outside to inside. The radar and infrared integrated stealth layer is formed by polymerizing silicon carbide fiber cloth and aniline in situ and has not only the wave absorption stealth performance but also antistatic property, high temperature resistance and flame retardant property. The surface of a radar absorption layer is coated with an infrared wave absorbing coating in a coating finishing mode. The tarpaulin is cut and sewn in a three-dimensional mode according to different application types. The integrated stealth tarpaulin can achieve the functions of radar stealth and infrared stealth at the same time, and has the advantages of being antistatic, flame-retardant, high in mechanical strength, flexible, wash-resistant and breathable, and convenient to produce.

The invention discloses a preparation method of telescopic MXene/graphene composite aerogel with a high electromagnetic shielding effect. According to the method, the three-dimensional netlike composite aerogel with a rich pore structure is formed through compounding MXene and reduced graphene oxide, inducing the reduced graphene oxide and the MXene by utilizing a modifying agent and performing cold and dry treatment. The preparation method disclosed by the invention has the following advantages that the telescopic MXene/graphene composite aerogel with the high electromagnetic shielding effectcan be obtained through uniformly mixing the reduced graphene oxide and MXene dispersing liquid, introducing the modifying agent and finally performing the cold and dry treatment, which reduces the stacking density of the MXene, constructs a new macroscopic appearance, has extremely excellent mechanical property and scalability and promotes the application feasibility of the MXene in aerospace field.

The invention discloses a high performance XNBR rubber containing graphene oxide and its preparation method. The preparation method comprises the following steps: adding graphite oxide into a surface modifier for ultrasonic stripping; carrying out centrifugal separation so as to obtain surface modified single-layer graphene oxide; mixing the single-layer graphene oxide with XNBR rubber latex; then successively adding an anti-aging agent and a flocculant and preparing a rubber mixture by using a co-coagulation method; and adding a vulcanizing agent for vulcanization so as to obtain graphene oxide-containing XNBR vulcanized rubber with high mechanical properties and high thermal conductivity. According to the invention, since the surface modifier is added in the process of stripping, stability and surface tension of graphene oxide suspension are changed, graphene oxide and the latex are allowed be uniformly mixed, and the degree of homodisperse of graphene oxide in a polymer is improved, and therefore, the purpose of improving mechanical strength of XNBR is achieved.

A carbon substrate for a gas diffusion layer that has a porosity gradient in a thickness direction thereof, a gas diffusion using the carbon substrate, an electrode and a membrane-electrode assembly for a fuel cell that include the gas diffusion layer, and a fuel cell including the membrane-electrode assembly having the gas diffusion layer are provided. The gas diffusion layer has improved water discharge ability and improved bending strength both in the machine direction and cross-machine direction.

The invention provides a collagen-based dura on the basis of a process-friendly type ion liquid on-site spinning technology, and a preparation method thereof. The preparation method comprises the steps of: dissolving I type collagen by a novel process-friendly solvent system-ion liquid and sodium salt composite system, fully soaking by taking decellularized pig dermis as a substrate through an electrolyte solution, carrying out electrostatic spinning by taking air as a medium, and regulating the pore structure of collagen fibers by adjusting the electrospinning conditions; removing residual ion liquid with a proper eluent, and carrying out freeze-drying, sterilization and packaging to obtain the collagen-based dura. The collagen-based dura has two or more layers of structures: the aperture of collagen fibers at one side close to brain tissue is controlled to be 3mu m and below, and the aperture of collagen fibers at one side far away from brain tissue is controlled to be 20mu m and above. Compared with the traditional solvent spinning, the preparation method is process-friendly, the toxic and side effects are reduced, and the triple-helical structure of the collagen can be furthest retained.

The invention discloses a polyimide porous membrane including benzimidazole and benzene lateral groups. The structure of the polyimide porous membrane including the benzimidazole and the benzene lateral groups is shown as the formula (I), wherein in the formula, n:m=4:6. The molecular mass of the polymer is 50 thousand to 150 thousand. A novel polyimide porous membrane material which is good in heat-resistant performance and processable performance is designed from the molecular viewpoint and can be widely applied to the fields of battery diaphragms, capacitor diaphragms, air purification, sewage processing, low-dielectric materials, ultrafiltration membranes, protection materials, catalytic carriers and the like.

The invention discloses a cleaning additive for glass bottles and a cleaning method of the glass bottles. The cleaning method and the cleaning additive are used for glass bottle cleaning by a primary alkaline bath and a secondary alkaline bath. The cleaning additive comprises a component A, a component B and a component C, wherein the component A comprises an organic phosphorus chelating agent, the component B comprises peroxide, the component C comprises a defoaming agent, the component A is added into the primary alkaline bath, the component B is selectively added into the primary alkaline bath, the component A and the component B are added into the secondary alkaline bath, and the component C is selectively added into the primary alkaline bath or the secondary alkaline bath. Based on the weight of alkaline solution in the primary alkaline bath or the secondary alkaline bath where the component is added, the adding amount of the component A is 0.05-5%, the adding amount of the component B is 0.1-0.5%, and the adding amount of the component C is 0-0.5%. The alkaline solution in the primary alkaline bath and the secondary alkaline bath is sodium hydroxide solution having a concentration of 1.5-3%. The cleaning additive and the cleaning method can achieve stable and good cleaning effects at a relatively low temperature that is usually 50-70 DEG C.

The invention provides a high-strength addition-type mould rubber composition and a preparation method thereof. The composition comprises high-concentration vinyl silicone oil which can form a local high crosslink density meshwork in the preparing process and play an anchoring role together with vinyl silicone resin and white carbon black in the composition, therefore, the mechanical strength of addition-type mould rubber is improved, the tearing strength can be more than 30 N/m, the mould turning times is significantly increased, the mould turning quality is significantly improved, and the composition can be used for high-precision model making.

Provided is a method for improving mechanical properties of hydrogel fibers by secondary crosslinking. The invention discloses the method for improving the mechanical properties of the hydrogel fibers by secondary crosslinking, and the method is characterized by comprising the steps: preparing a monomer aqueous solution, stirring evenly, then adding a UV initiator with good water solubility, stirring to dissolve completely under a room temperature light-shielding condition, and thus obtaining a spinning prepolymerization solution; extruding the spinning solution from a spray nozzle into water bath through a metering pump, arranging an ultraviolet light point source at an outlet of the spinning solution, under ultraviolet light irradiation, carrying out a free radical polymerization reaction of the dynamically extruded spinning solution monomer, to obtain a hydrogel as-formed fiber; and immersing the as-formed fiber in a water soluble thermal initiator solution prepared in advance, increasing the temperature, and decomposing a thermal initiator to trigger a double-bond containing polymer chain in the as-formed fiber to generate secondary crosslinking, so as to improve the mechanical properties of the gel fiber and expand the application field of the hydrogel.

The invention discloses an anode tab, a soft packing lithium ion battery and a method for manufacturing the anode tab. The anode tab comprises an aluminum strip and a nickel strip; the central part of the aluminum strip comprises a tab sealing area; a layer of tab glue is attached on each of the upper and lower surfaces of the sealing area of the aluminum strip glue, wherein the width of the tab glue is more than that of the tab; the upper surface on the front part of the aluminum strip is in lap joint with the lower surface on the rear part of the nickel strip; the tab glue attached on the lower surface of the aluminum strip is extended to the lower surface of the lap-jointed part of the aluminum strip and the nickel strip. The soft packing lithium ion battery comprises a soft packing shell and the anode tab, wherein an anode tab socket of the soft packing shell and the anode tab are pressed and sealed through the tab glue attached on the anode tab. According to the anode tab, the soft packing lithium ion battery and the method for manufacturing the anode tab, the outer mechanical intensity of an node tab aluminum-to-nickel joint is enhanced by extending the tab glue, the nickel strip is guaranteed not to contact with electrolyte in a battery cavity; the service life of the soft packing lithium ion battery is prolonged and the labor cost of a manufacturer is reduced.

The invention discloses a calcium phosphate-based bone repair scaffold and a preparation method thereof. Calcium phosphate bone cement is used as a raw material and is combined with a 3D printing technology to obtain a calcium phosphate bone cement scaffold with through macropores; a dopamine solution is used for modifying the surface of the scaffold; dopamine forms a polydopamine layer on the surface of the scaffold through self-oxidation under alkaline conditions; polydopamine has good viscosity and biocompatibility, can be used as an adhering coating layer of BMP-2, improves the content offixed BMP-2, and promotes cell adhesion and proliferation; the BMP-2 loaded on the scaffold can also effectively promote the proliferation and osteogenic differentiation of bone marrow mesenchymal stem cells. The prepared calcium phosphate-based bone repair scaffold has through macropores, meets the mechanical strength requirements of cancellous bones, has excellent biocompatibility, can effectively promote bone tissue regeneration, and has potential application value in the field of bone tissue repair.

The invention relates to a composite material of light-degradation antibiotic polylactic acid, which mainly comprises polylactic acid and nanometer TiO2, wherein, the content of polylactic acid is 90.0% to 99.0%, the content of nanometer TiO2 is 1.0%to 10.0%. The process for preparation comprises adding coupling agent to flow back for 2-4 hors under the temperature of 80 DEG C+-10 DEG C after dispersing nanometer TiO2 in methyl ethyl ketone, acetone or triethylamine disperser in ultrasonic, placing in a straight sealing tube with lactide after whizzing and drying, adding accelerating agent, and preparing in 150 DEG C +- 10 DEGC vacuum to polymerize for 2-4 hours. Compared with polylactic acid, the heat decomposition temperature, the glass transformation temperature and mechanical properties of the invention are all greatly improved, and the invention has the functions of antibacterial activity and ultraviolet absorption, the degradation rate is obviously accelerated under the radiation of ultraviolet light and natural conditions, and the invention has complete biodegradability. The composite material of light-degradation antibiotic polylactic acid of the invention adopts an in-situ polymerization, whose processing technology is simple, production cost is low, and application prospect is wide.

The invention relates to a preparation of MWCNTs reinforced zero-value nano iron/electrostatic spinning nano fiber felt, comprising the following steps: (1) dissolving MWCNTs into deionized water and carrying out ultrasonic dispersion; (2) dissolving polyvinyl alcohol (PVA) in deionized water, to prepare PVA solution and cooling to room temperature; (3) preparing soluble iron salt solution, NaBH4 or KBH4 solution; (4) dripping the MWCNTs solution into PAA water solution, adding PVA solution, adjusting the pH value to be 2.5 to 4.5, preparing nano fiber felt in a spinning manner, carrying out heat treatment, soaking into the iron salt solution, dripping the reducing agent, namely NaBH4 or KBH4 solution, to the brown-yellow fiber, rinsing by 2 to 5 times, drying for 24 hours to 36 hours, to provide the MWCNTs reinforced zero-value nano iron/electrostatic spinning nano fiber felt. The invention has simple method and easy operation, the used polymers are all environment-friendly high-molecular materials, thereby being applicable to industrial production; and the obtained fiber has high mechanical property and can be used for removing the pollutants in the environment.

The invention discloses a preparation method of a corn alcohol-soluble protein nanofiber membrane used for cell culture. The corn alcohol-soluble protein/polyvinyl alcohol nanofiber membrane is a cell culture carrier material, which comprises biodegradable natural polymer corn alcohol-soluble protein and polyvinyl alcohol as a biocompatible high polymer. The transverse dimension of a ribbon-like corn alcohol-soluble protein/polyvinyl alcohol nanofiber is 625 to 3,920 nanometers; and the nanofibers are stacked into the nanofiber membrane randomly. The corn alcohol-soluble protein/polyvinyl alcohol nanofiber membrane is made through electrostatic spinning process, the preparation method is simple and effective, preparation equipment is simple, the stability is high, and indexes such as the diameters of the nanofibers and the porosity of a membrane material and the like can be regulated through changes of the condition of the electrostatic spinning process. The experiment proves that compared with a common PC (polycarbonate) plate, the corn alcohol-soluble protein nanofiber membrane material contributes to proliferation of mouse embryonic stem cells, and the diameter of the stem cell clone cultured for 5 days reaches 100 micrometers. Moreover, the nanofiber membrane can be recycled after being steamed and pressed for 30 minutes at 120 DEG C.

An organic luminescence includes pixel electrodes. Banks are each generally between adjacent ones of the pixel electrodes. The banks define apertures that each correspond to one of the pixel electrodes. An organic luminescent layer is within each of the apertures, and an upper electrode is above the banks and the organic luminescent layer. At least a portion of a periphery of each of the apertures includes curved portions and cusps. The curved portions are concave, and adjacent ones of the curved portions define each of the cusps.

The invention discloses a high-damping self-compaction concrete which is composed of P.O42.5 ordinary Portland cement, composite reinforcing powder, emulsified asphalt, polycarboxylic acid high efficiency water reducing agent, mixing water, composite deformation component, II-zone grade river sand with the fineness modulus of 2.6-3.0, and limestone gravel with the particle size of 5-20mm. Every cubic meter of concrete comprises the following components in parts by mass: 16 parts of cement, 7.8 parts of composite reinforcing powder, 0.8-1.0 part of emulsified asphalt, 7.5 parts of mixing water, 0.22-0.27 part of water reducer, 1.6-1.7 parts of composite deformation component, 29-30 parts of river sand and 36-37 parts of limestone gravel. The high-damping self-compaction concrete has the advantages of excellent damping function, excellent shock resistance, higher mechanical strength, low elastic modulus and obvious technical and economical effects, and especially can effectively improve the service behavior and service life of basic structures subjected to impact, vibration and other repeated mobile load actions, such as high-speed railway track structures, bridge structures and other engineering structures.

The invention relates to a liposome calcium sulfate composite nanometer artificial boneware, as well as a preparation method and application thereof. The preparation method comprises the steps of well mixing liposome (1 to 40 percent), calcium sulfate powder (40 to 80 percent) and diluent (10 to 50 percent), curing the materials and then preparing a bone graft substitute containing nanometer liposome. The liposome can carry medicine and can modify surface, has two forms, namely solution and powder, and comprises traditional micromolecule liposome and macromolecule liposome having macromolecule characteristics. The invention can provide an artificial bone material which has nanometer reinforcing effects, function of sustaining and controlling medicine release, controllable degradation time, good biocompatibility and mechanical strength, can induce bone growth in vivo, and is beneficial to the healing of defective areas of bones.

A compressor impeller including at least one blade connected to an impeller hub via a junction of curved shape, the blade extending along a defined chord between a leading edge and a trailing edge of the blade. The junction presents the shape of an ellipse that varies along the chord.

The invention discloses a high-performance structural adhesive for a reinforcement project with water environment and a preparation method of the high-performance structural adhesive. The structural adhesive is prepared from a component A and a component B, wherein the mass ratio of the component A to the component B is (2 to 1) to (3 to 1). The component A consists of nano silica grafted modifiedepoxide resin, epoxy active diluent, an elastomeric modifier, water-absorbent resin, a defoaming agent, a dispersing agent, active silica powder, cement, calcium sulfate whisker, organic montmorillonite and a thixotropic agent; the component B consists of a compound amine curing agent, a curing accelerator, a coupling agent, the defoaming agent, the dispersing agent, the active silica powder, thecement, the calcium sulfate whisker, the organic montmorillonite, the thixotropic agent and the carbon black. The high-performance structural adhesive for reinforcement projects with the water environment, disclosed by the invention, has the advantages of high bonding strength of water interface, high mechanical strength, good toughness, excellent impact resistance and high fatigue resistance, good construction performance and the like; the bonding effect and durability of the structural adhesive in the reinforcement projects with water environment can be remarkably enhanced; in addition, thepreparation method of the high-performance structural adhesive is especially suitable for meeting glue demands of a hydraulic structure reinforcement and restoration project.