196results about How to "Not easy to lose powder" patented technology

The invention relates to a sulfonated polymer applied to a lithium battery electrode as a binder as well as a method for preparing the lithium battery electrode. The sulfonated polymer is used as the binder in electrode slurry of the lithium battery electrode, the obtained lithium battery electrode is used for assembling a lithium battery, and the lithium battery is relatively long in charging-discharge cycle life and stable in work under a relatively high current density. The sulfonated polymer with a sulfonic acid group has excellent capacity of transferring lithium ions, so that the lithium ions can be rapidly transmitted back and forth between an electrode active material and an electrolyte, and the lithium battery which is stable to run under the rapid charging-discharging condition can be obtained. The sulfonated polymer which is used as the binder is sufficient in cohesion force and binding strength, and the electrode active material and a conductive medium are stuck onto a current collector by the sulfonated polymer and are unlikely to fracture and dust, so that the lithium battery has sufficient capacity and cycle performance as well as excellent rate capacity.

The invention discloses a portable nursing pad containing a polylactic acid fiber and a preparation method thereof. A conventional nursing pad has a relatively long processing flow, and the long production process wastes a lot of manpower, material resources and financial resources. The nursing pad is composed of an upper-layer assembly body and an impermeable bottom layer, wherein the upper-layer assembly body is composed of a surface layer composed of a polylactic acid fiber net, a flow-guiding moisture-absorption layer composed of a water-repellency bicomponent fiber and a superabsorbent fiber net, and an absorption layer composed of a hydrophilic bicomponent fiber and a superabsorbent fiber net, and the three layers are subjected to hot melt compounding to form a whole; the upper layer and the impermeable bottom layer are subjected to hot melt adhesive compounding to form a whole. The prepared nursing pad has the characteristics of short process flow, good molding, bacteriostasis, deodorness, gas permeation and dryness, does not produce lumps and allows powder not to fall off in a use process, and is an ideal material for preparing disposable medical treatment health supplies.

The invention discloses a halogen-free resin composition and a low-fluidity prepreg thereof. The halogen-free resin composition comprises, by weight, 20-80 parts of an epoxy resin composition, 10-50 parts of phenoxy resin, 10-50 parts of a flame retardant, 3-30 parts of a toughening agent, 10-80 parts of an inorganic filler, 1-10 parts of a curing agent, 0-5 parts of an accelerator and 0-80 partsof an additive. The halogen-free resin composition obtained by modifying common epoxy resin with bisphenol F phenoxy resin, liquid epoxy resin and long chain-containing aliphatic epoxy resin has low viscosity and good wettability, and the low-fluidity prepreg produced from the halogen-free resin composition has the advantages of high flexibility, high Tg and bonding strength, excellent heat resistance, greenness, environmental protection, no resin dust, and realization of long-term preservation.

The invention provides a production method of a paper pulp molded product with the smooth surface. The production method includes the following steps that 1, after paper pulp fibers, water and a polyacrylamide resin solution are mixed and stirred, pulp is obtained; 2, under the negative pressure condition, the pulp is sucked and dewatered, and a paper pulp molded wet blank with the water content being 60%-70% is obtained; 3, the paper pulp molded wet blank with the water content being 60%-70% is subjected to heat setting, and a paper pulp molded dry blank with the water content of 6%-10% is obtained. The production method has the advantages that the pulp is sucked and dewatered under the negative pressure condition, polyacrylamide reticular molecular structures in the pulp are centralized on the surface of the wet blank, a smooth film is formed on the surface of the pulp molded product after heat setting, and moisture absorption and powder falling are not likely to happen.

The invention discloses a preparation method of melamine-formaldehyde resin foam, and belongs to the technical field of microwave foaming. The method comprises the following steps: taking 120-180 parts by weight of a melamine-formaldehyde resin; adding 5-12 parts by weight of a foaming agent, 3-6 parts by weight of an emulsifier, 3-6 parts by weight of a stabilizing agent, and 2-5 parts by weight of a curing agent in sequence, performing mixing and uniform stirring, and putting the obtained product in a microwave oven for foaming; and putting the obtained foam in an oven for curing for 2 h, wherein the temperature of the oven is 180-250 DEG C, and performing cutting molding. The melamine-formaldehyde resin foam is small in brittleness, not prone to shred particles, and high in tensile and tearing strength. The problem existing in the prior art is effectively solved, and the melamine-formaldehyde resin foam in excellent in mechanical property, flame retardance and sound attenuation.

The invention discloses a high-heat-resistance lithium battery composite diaphragm and a preparation method thereof. The preparation method comprises the following steps: adding polyvinyl alcohol powder into deionized water, swelling at the room temperature for 10-12 hours, and stirring at 85-95 DEG C for 4-5 hours, so as to prepare a polyvinyl alcohol solution; mixing and stirring ethyl orthosilicate, absolute ethyl alcohol and deionized water, dropwise adding ammonia water, and stirring at 40-45 DEG C for 0.5-1 hour, so as to obtain a mixture; adding the obtained mixture and aluminum oxide powder into the obtained polyvinyl alcohol solution, and stirring at 40-45 DEG C for 10-12 hours, so as to obtain a coating sizing agent; and coating the surface of a pretreated polyolefin microporous membrane with the sizing agent by virtue of a coating method, drying at the room temperature, and carrying out vacuum drying, so as to obtain the high-heat-resistance lithium battery composite diaphragm. The preparation method is simple in process and environment-friendly, and the prepared composite diaphragm is high in heat resistance, liquid absorbing rate and liquid retention rate and excellent in electrochemical performance and has good application prospects.

The invention provides an Erdosteine composition which consists of the following components by weight portions: 130 to 170 portions of Erdosteine, 35 to 65 portions of lactose, 30 to 70 portions of microcrystalline cellulose, 20 to 40 portions of low substituted hydroxypropyl cellulose, 1 to 5 portions of acesulfame, 10 to 30 portions of sodium carboxymethyl starch and 0.1 to 0.5 portions of magnesium stearate; the invention also provides a preparation method of the Erdosteine composition, comprising the following steps of: preparing materials and pelleting; mixing the Erdosteine and the low substituted hydroxypropyl cellulose evenly, then grinding, adding the sodium carboxymethyl starch, adding absolute ethyl alcohol, wet-mixing, cutting, drying, granulation and tabletting; mixing granules and microcrystalline cellulose evenly, adding the lactose, the acesulfame and the magnesium stearate for pelleting, subpackaging and obtaining the Erdosteine composition. The Erdosteine composition has good dispersible uniformity and high drug dissolution efficiency.

The invention relates to a thermal-insulating coating containing hollow silica microspheres and application of the coating. The thermal-insulating coating is a mixture of the hollow silica microspheres, a solvent and a binder, wherein the hollow silica microspheres include hollow inner cavities, honeycomb-shaped inner shell layers and outer shell layers, the hollow inner cavities are surrounded bythe honeycomb-shaped inner shell layers which contain dense micropores, mesopores and macropores, and the outer shell layers are adjacent to the honeycomb-shaped inner shell layers, and contain onlymesopores. The invention also provides the application of the thermal-insulating coating to thermal-insulating coated fabric or glass fiber paper, and an application method comprises the steps: applying the thermal-insulating coating on the surface of base cloth of the fabric or the surface of the glass fiber paper, and then performing drying. According to the thermal-insulating coating, the hollow silica microspheres of a novel structure are added, and after the coating is applied to the surface of the base cloth of the fabric or the surface of the glass fiber paper, the thermal insulation effect of the surface of the fabric or glass fiber paper can be improved greatly, so that blanks in application of the hollow silica microspheres in the field of thermal insulation of the fabric or glass fiber paper are filled.

The invention discloses a selective absorbing dry method paper filter material for a cigarette filter tip rod and a preparation method thereof. The selective absorbing dry method paper filter material is formed by processing 80-100 parts of base material fibers, 0-20 parts of adhesive and adsorbing materials of which the weight is 0.5 percent to 10 percent of that of the base material fibers through a dry method papermaking technology. The preparation method comprises working procedures of fiber net formation, adsorbing material coating and paper making and formation, that is to say, after fiber nets are formed by fibrous raw materials containing hot melting fibers in an air-laid manner and are pre-pressed, the adsorbing materials are evenly sprayed into accumulated fiber net layers, or are sprayed and coated on the front surfaces of the fiber nets after being mixed with the adhesive, and the fiber nets are formed in a rolled manner; after the adsorbing materials are sprayed and coated on the back surfaces of the fiber nets, glue is applied to the fiber nets, the fiber nets are additionally formed in a rolled manner, and then the paper filter material is obtained. By adopting the selective absorbing dry method paper filter material, harmful ingredients such as solid particle matters, nicotine and nicotinamide in cigarette smoke can be effectively reduced, the tar content can be markedly reduced, the cigarette smoking quality can be improved and the cigarette safety can be enhanced. The preparation method of the selective absorbing dry method paper filter material has the advantages of simple and convenient technology, easiness in operation and high practicality.

The invention belongs to the technical field of functional materials and discloses a lignosulfonic acid-reinforced polypyrrole conductive paper and a preparation method thereof. The method comprises (1) separating a lignosulfonate through an ultrafiltration membrane and then purifying the lignosulfonate through a cation exchange resin to obtain lignosulfonic acid, (2) soaking a paper in the lignosulfonic acid for 10-30min, then soaking the paper in an aldehyde aqueous solution for 10-30min and heating the paper to 80-110 DEG C for a condensation reaction for 1-2h, (3) soaking the paper in a pyrrole solution for 10-30min, and (4) soaking the paper in a mixed solution of an oxidant and an inorganic acid for a reaction for 10-120min to obtain a self-assembled single-layer conductive paper andrepeating the above steps (2) to (4) to obtain a self-assembled multi-layer conductive paper. The lignosulfonic acid-reinforced polypyrrole conductive paper has high conductivity, good stability, adjustable loading capability and no dusting and can be used in the fields of surface heating materials, electromagnetic shielding materials and flexible electrode materials.

The invention discloses an active carbon air-conditioner filter core material and a preparation method thereof. The air-conditioner filter core material comprises the following raw materials, by weight part: 100-150 of sludge, 13-17 of cornstalk, 15-24 of peanut hull, 30-50 of zinc chloride, 13-16 of magnesium silicate, 6-9 of zirconia, 2-4 of cetyltrimethylammonium bromide, 2-3 of polyvinyl alcohol, 6-8 of zirconium fluoride, 8-12 of hydrotalcite, 5-6 of meerschaum powder, and a proper amount of distilled water. Zirconium fluoride, hydrotalcite, and meerschaum powder added in the air-conditioner filter core material greatly improve bactericidal activity, thermostability, and ion exchange performance of sludge active carbon, increase the adsorption capacity and adsorption range, and enlarge the application range of the adsorbent. According to the invention, the active carbon adsorbent is simple in preparation technology, wide in raw material source, low in cost, and excellent in performance, is good in use effect when taken as the air-conditioner filter core material, is less in change frequency, and has a long service life.

The invention discloses an activated carbon adsorbent for adsorbing gasoline vapor. The activated carbon adsorbent is characterized by being prepared from the following raw materials in parts by weight: 100-150 parts of sludge, 13-17 parts of maize straw, 15-24 parts of peanut shell, 10-15 parts of manganese ore flour, 30-50 parts of zinc chloride, 13-16 parts of magnesium silicate, 5-8 parts of silicon dioxide, 3-5 parts of polyvinyl alcohol, 3-5 parts of polyacrylamide, 6-8 parts of basalt fiber, 2-4 parts of polyisobutylene succinimide, 8-11 parts of magnesium oxide and proper amount of distilled water. By adding the basalt fiber, the polyisobutylene succinimide and the magnesium oxide, the strength and the adsorption capacity of the sludge activated carbon can be enhanced, and the adsorbent has good purification and cleaning effects on gasoline; and the adsorbent prepared by the invention is high in gasoline adsorption capacity, good in desorption, high in strength, capable of effectively relieving the harm to environment and human bodies and is worthy of popularizing.

The invention discloses a production process of melamine-formaldehyde resin foam sponge. The production process comprises the following steps: melamine and paraformaldehyde are taken and mixed evenly; the mixed material is conveyed into a first screw machine by a material pump, and lye is added at a feed inlet of the first screw machine; an auxiliary material solution is added to the feed end, the middle position or the tail end of the first screw machine; transparent resin extruded from an outlet of the first screw machine enters a second screw machine to be subjected to a polymerization reaction continuously in the second screw machine; the transparent resin discharged out of the tail of the second screw machine enters a third screw machine after passing through a cooling device; a foaming agent, an emulsifier, a stabilizer and a curing agent are fed from the middle of the third screw machine and mixed with the resin uniformly; the resin mixed uniformly is introduced into a microwave foaming furnace for foaming, and the melamine-formaldehyde resin foam sponge with high aperture ratio is formed. The production process of the melamine-formaldehyde resin foam sponge has high utilization rate and high yield, the melamine-formaldehyde resin foam sponge with stable production quality can be produced continuously, and the aperture ratio is high.

The invention relates to a tree trunk whitening agent.The tree trunk whitening agent is characterized by being prepared by stirring, by weight, 15-20 parts of quick lime, 6-10 parts of micropore foaming glass pumice particles, 3-5 parts of white cement, 3-5 parts of sulphur powder and 30-40 parts of water.The diameter of the micropore foaming glass pumice particles is 0.5-2 mm.The diameter of micropores of the micropore foaming glass pumice particles is 0.1-1 mm.The invention further relates to a preparation method of the tree trunk whitening agent.The tree trunk whitening agent has the advantages that tree trunk breathability can be improved, and a dried and fixed coating is not likely to fall or crack.

The invention discloses a method for manufacturing a super capacitor. The method for manufacturing the super capacitor comprises the step of electrode slurry preparation, wherein the electrode slurry preparation comprises the following steps that deionized water and polyurethane are placed into a planetary mixer to be mixed, and a binding agent blended well like water and milk is obtained; the binding agent is placed into a kneading machine, acetylene black is placed into the kneading machine, and the binding agent and the acetylene black are mixed in the kneading machine; activated carbon powder is put into the kneading machine to be stirred for 20-40 minutes to obtain paste-shaped pre-finished electrode slurry; the pre-finished electrode slurry is put into a stirring tank of the planetary mixer and deionized water is added into the stirring tank; the stirring tank is vacuumized to 300-200 pa and the mixture of all the materials is stirred in the stirring tank for 20-40 minutes to obtain electrode slurry. The super capacitor manufactured with the method is high in reliability, high in power density and high in energy density. The production efficiency is high and the energy consumption is low in a production process.