90results about How to "Inhibit heat shrinkage" patented technology

An electrochemical device includes a plurality of unit cells, each having a first separator and a cathode and an anode positioned at both sides of the first separator, and a continuous single second separator interposed between adjacent unit cells in correspondence with each other in a laminated pattern and arranged to surround each unit cell. The first separator includes a heat-resisting porous substrate having a melt point of 200° C. or above and a first porous coating layer formed on at least one surface of the heat-resisting porous substrate and made of a mixture of a plurality of inorganic particles and a binder polymer. The second separator includes a polyolefin porous substrate and a second porous coating layer formed on at least one surface of the polyolefin porous substrate and made of a mixture of a plurality of inorganic particles and a binder polymer.

A filtration filter including a cartridge, which contains a crystalline polymer microporous membrane having a plurality of pores, where the average pore diameter of a first surface of the crystalline polymer microporous membrane is larger than that of a second surface thereof, and the average pore diameter of the crystalline polymer microporous membrane continuously changes from the first surface thereof to the second surface thereof, wherein at least part of the crystalline polymer microporous membrane forming the cartridge is subjected to surface modification after the crystalline polymer microporous membrane is formed into the cartridge.

The invention provides a diaphragm of a lithium battery and a preparation method thereof. The diaphragm of the lithium battery comprises a base diaphragm, a ceramic coating and a hot melted polymer coating. The ceramic coating and the hot melted polymer coating are located on the same side of the base diaphragm, and the ceramic coating comprises a ceramic particle material and a first adhesive; the hot melted polymer coating comprises hot melted polymer material particles and a second adhesive. The problem of thermal closing and thermal contraction of the diaphragm is solved.

Disclosed is an electrode whose surface includes an organic/inorganic composite porous coating layer comprising porous inorganic particles and a binder polymer, wherein the porous inorganic particles have pores having such a size that lithium ions (Li+) solvated in an electrolyte solvent can pass therethrough. A method for manufacturing the electrode and an electrochemical device using the electrode are also disclosed. The organic/inorganic composite porous coating layer formed on the electrode according to the present invention provides an additional pathway for lithium ion conduction due to a plurality of pore structures present in the porous inorganic particles. Thus, when the organic/inorganic composite porous coating layer is used instead of a conventional polymer-based separator in a battery, the battery can provide improved quality and an increased energy density per unit weight due to a reduced weight of the organic/inorganic composite porous coating layer.

A dual-fuel burning gas turbine combustor having a diffusive combustion burner to burn a liquid fuel and a gaseous fuel placed at the axis of the gas turbine combustor and a plurality of pre-mixing combustion burners to burn a liquid fuel and a gaseous fuel placed on an outer circumferential side of the diffusive combustion burner, each pre-mixing combustion burner having a liquid fuel nozzle, a plurality of gaseous fuel spray holes, a plurality of air holes, and a pre-mixing chamber to mix gaseous fuel and air, wherein each pre-mixing combustion burner has a double pipe sleeve at a connected portion between end cover and the pre-mixing combustion burner, and the double pipe sleeve has an inner sleeve having a gaseous fuel flow path, an outer sleeve positioned on an outer circumferential side of the inner sleeve, and a circular spacing formed between the inner sleeve and the outer sleeve.

The present invention discloses a thermal-resistant and flame-retardant membrane and a preparation method thereof, and applications. According to the preparation method, the cost is controllable, theoperation of the preparation process is simple, and thus the preparation method is suitable for mass production. The prepared thermal-resistant and flame-retardant membrane has a double-layer composite structure with both thermal stability and flame retardancy, the membrane can prevent internal short circuit of a battery at a lower temperature, so that severe thermal runaway of the battery is prevented, and thus safety accidents, such as burning and explosion are prevented; the membrane can effectively prevent the battery from burning and exploding after the thermal runaway of the battery occurs under the conditions of overcharge, puncture and abuse; and the membrane has good applications in the chemical power supply system, especially in lithium ion batteries.

There is provide an addition-curable silicone composition from which a silicone cured product having excellent adhesiveness and external appearance, being able to protect metal, in particular, silver, from corrosion, and having less shrinkage and change in hardness due to heat, is obtained. The addition-curable silicone composition contains: 100 parts by mass of a polyorganosiloxane having alkenyl groups; an amount of a polyorganohydrogensiloxane such that an amount of Si—H groups is 0.9 to 3.0 mol relative to 1 mol of the alkenyl groups; a catalyst amount of a hydrosilylation reaction catalyst; 0.01 to 10 parts of an adhesiveness imparting agent; and 0.001 to 0.015 parts by mass, in terms of metal atoms of (R³COO)_kM (where M is Ce, Fe, Cr, La, Nd, Pr or Sm, k is 2, 3 or 4, and R³ represents a substituted or unsubstituted hydrocarbon group having 4 to 17 carbon atoms).

A substrate for p-Si TFT flat panel displays made of a glass having a high low-temperature-viscosity characteristic temperature and manufactured while avoiding erosion/wear of a melting tank during melting through direct electrical heating. The glass substrate comprises 52-78 mass % of SiO₂, 3-25 mass % of Al₂O₃, 3-15 mass % of B₂O₃, 3-20 mass % of RO, wherein RO is total amount of MgO, CaO, SrO, and BaO, 0.01-0.8 mass % of R₂O, wherein R₂O is total amount of Li₂O, Na₂O, and K₂O, and 0-0.3 mass % of Sb₂O₃, and substantially does not comprise As₂O₃, wherein the mass ratio CaO/RO is equal to or greater than 0.65, the mass ratio (SiO₂+Al₂O₃)/B₂O₃ is in a range of 7-30, and the mass ratio (SiO₂+Al₂O₃)/RO is equal to or greater than 5. A related method involves melting glass raw materials blended to provide the glass composition; a forming step of forming the molten glass into a flat-plate glass; and an annealing step of annealing the flat-plate glass.

Aiming at the problem that hydrophilicity and thermal stability of a polypropylene lithium-ion battery separator are poor, the invention provides a method for layer-by-layer self-assembly of polyelectrolyte on the surface of a separator so as to improve the hydrophilicity and thermal stability of the polypropylene lithium-ion battery separator. According to the technical scheme, an aqueous solution polymerization method is adopted for respectively preparing anion polyelectrolyte containing an anion structural unit and cation polyelectrolyte containing a cation structural unit, and a pretreated polypropylene separator is repeatedly and alternately soaked in two polyelectrolyte solutions, so that macromolecule polyelectrolyte is self assembled onto the surface of the polypropylene separator under the action of an electrostatic force; the polypropylene lithium-ion battery separator prepared by adopting the method provided by the invention has high hydrophilicity and thermal stability, a static water contact angle is as low as 30 degrees; after the polypropylene lithium-ion battery separator is treated for 4 hours at the temperature of 130 DEG C, thermal shrinkage of the polypropylene lithium-ion battery separator is about 15% only; the method is easy to operate and strong in practicability, the defects of chemical modification and a general coating method are overcome, and the method disclosed by the invention can be put into industrial production.

An electrically insulating non-woven fabric having a main component of poly-p-phenileneterephthalamide fibers bonded with each other by a binder of thermosetting resin and a second binder of one selected from fiber chops, fiber pulps and fibrids of thermoplastic resin having a softening point of 220° C. or higher, the poly-p-phenileneterephthalamide fibers being pulps or both of chops and pulps with a blend mass ratio of the chops to the pulps being 0/100 through 95/5 and preferably 50/50 through 90/10, a fiber length of the poly-p-phenileneterephathalamide fiber chops being preferably 3 to 6 mm, a content of the thermosetting resin binder in the non-woven fabric being 5 to 30 mass % and a content of the second binder being is 5 to 15 mass %.

A purpose of the present invention is to provide a non-woven fabric for a semipermeable membrane support, which meets wet strength required by the non-woven fabric for the semipermeable membrane support, suppresses thermal contraction during hot press processing, and has uniform thickness and permeability. The non-woven fabric for the semipermeable membrane support provided by an embodiment is a non-woven fabric with pulp fibers having cellulose component as a main body and organic synthetic fibers as the main fibers. One side surface of the non-woven fabric supports the semipermeable membrane. The content of the pulp fibers having cellulose component as the main body is 5-40% by mass of a total mass of the non-woven fabric.

An electrode assembly is provided. The electrode assembly has a plurality of electrode plates having one or both sides of each of the electrode plates that are coated with an electrode active material and are stacked with a separator interposed between the respective electrode plates. The separator includes a surplus outer periphery of a size greater than the outer periphery of an electrode plate, an electrode tab which extends from the outer periphery of the electrode plate and protrudes outwardly beyond the outer periphery of the separator is formed on each electrode plate, and at least some of the separators forming the electrode assembly have an insulation-enhancing part for suppressing heat shrinkage of a separator formed in the surplus outer peripheries thereof which are adjacent to the respective electrode tabs.

A separator includes a substrate layer made of a resin and a heat resistance layer. The heat resistance layer contains heat-resistant fine particles and a binder. An amount of the binder contained per unit volume in the heat resistance layer positioned at an end portion in a width direction perpendicular to a longitudinal direction of the separator is higher than the amount of the binder contained per unit volume in the heat resistance layer (84) positioned at a center portion which includes the center in the width direction of the separator. In the heat resistance layer at the end portion, the amount of the binder contained per unit volume in a substrate layer side region is higher than the amount of the binder contained per unit volume in a surface region which includes a surface of the heat resistance layer.

This invention provides an optical element comprising: an optical functional section on a first surface of the optical element, the optical functional section having a fine structure; and a flange section formed on a periphery of the optical functional section, wherein the flange section has a heat shrinkage-inhibiting portion, which inhibits heat shrinkage of the optical element during molding in a direction perpendicular to an optical axis of the optical element. The invention further provides a method of molding the optical element, and a mold.

The present invention relates to a composite lithium ion battery separator and a preparation method thereof. The composite lithium ion battery separator is composed of a substrate layer and an inorganic/organic composite porous film layer arranged on the surface of the substrate layer. The substrate layer is polyolefin porous film and the inorganic/organic composite porous film layer is a composite layer containing inorganic nanoparticles and waterborne binder. The preparation method of the composite lithium ion battery separator is as follows: inorganic waterborne dispersion liquid, organic waterborne dispersion liquid and surfactant are added into deionized water, stirred and mixed uniformly to prepare coating; the substrate layer is immersed into the prepared coating, subjected to dip coating, dried at a room temperature and then dried in vacuum to prepare the composite lithium ion battery separator. The invention aims at the problem that the safety performance of the separator is unstable; an organic-inorganic uniform hybrid porous film is cured and formed on the surface of the separator; and the improvement of the separator thermostability and the safety and the chemical corrosion resistance of the lithium ion battery is realized.

The invention discloses a high-transmittance high-heat insulation energy-saving explosion-proof membrane and a preparation process thereof. The membrane comprises a substrate layer, wherein a first metal indium layer is magnetron-sputtered on one surface of the substrate layer; a metal silver layer or a metal aluminum layer as a heat insulation layer is magnetron-sputtered the other surface of the first metal indium layer; a second metal indium layer is magnetron-sputtered on the other surface of the metal silver layer or the metal aluminum layer; and the preparation process comprises the following steps: preparing a plastic-based membrane; magnetron-sputtering and depositing the first metal indium layer for oxidation protection on the plastic-based membrane in the step one; magnetron-sputtering and depositing the heat insulation layer on the other surface of the first metal indium layer; and magnetron-sputtering and depositing the second metal indium layer on the other surface of the heat insulation layer in the step three. According to the invention, the high-transmittance high-heat insulation energy-saving explosion-proof membrane is beneficial to reflecting and blocking infrared rays in solar rays and significant in heat insulation effect, and can preferably protect the magnetron-sputtered metal layers, prevent the metals from oxidation, and improve and ensure the performance and service life of products, thereby being applicable to places with higher requirements; and meanwhile, the invention provides the preparation process of the above high-transmittance high-heat insulation energy-saving explosion-proof membrane.