40results about How to "Strong liquid absorption" patented technology

The invention discloses an isolating membrane of lithium ion secondary battery, comprising a porous substrate and a polymer coating distributed only on a surface of the porous substrate which faces an anode of the lithium ion secondary battery, wherein the polymer in the polymer coating is selected from poly(methyl methacrylate-acrylonitrile), poly(methyl methacrylate-vinyl acetate), poly(methyl methacrylate-acrylonitrile-vinyl acetate), poly(n-butyl methacrylate-styrene), or blends of the polymers. The polymer unit in the polymer coating of the isolating membrane of the lithium ion secondary battery contains carbonyl, wherein very strong effect exists between the carbonyl and oxygen in carbonic acid ester type organic solvent so as to have fine solution suction ability and good interface stability of lithium electrode or anode; the membrane has strong adhesive property and film formation, and can provide fine mechanical tensile strength; and the membrane has fine cycle performance and safety performance. The invention further discloses a polymer lithium ion secondary battery using the membrane.

The invention relates to a method for preparing a medical quick liquid-absorbing foam material. The method comprises the steps of well mixing polyvinyl alcohol aqueous solution, aldehyde and a pore-forming agent, adding acid to the mixture, continuing to stir the mixture, pouring the mixed solution into a die, curing and molding the mixed solution, washing and drying the obtained product and obtaining a target object. The material has abundant mutually communicated opening structures through a method of using mechanical foaming together with the pore-forming agent. The prepared material is good in biological compatibility and excellent in hydrophilcity, has the liquid-absorbing capability much higher than common cotton yarn and paper, has the capability of quickly absorbing a large amount of distilled water, physiological saline and urine, turns into soft tenacious elastic sponge after absorbing liquid, is resistant to heat and ultraviolet radiation, and can be disinfected in a plurality of ways. The prepared material is a rigid foam material in a dry state, is a spongy material in a wet state, has the apparent density of between 0.04 and 0.09 g/cm and the liquid-absorbing ratio of between 1,800 and 2,800 percent, and can be applied to medical operations.

The present invention relates to a polymer microporous membrane for high-rate polymer lithium-ion power battery. The polymer microporous membrane is mainly used in gel polymer lithium-ion power battery. The power battery can provide powered power supply for equipment of high energy consumption and large current discharge, such as an electric vehicle, an electric motorcycle, uninterruptible power supply and so on. The microporous membrane is made of polymer material, inorganic filler, plasticizer and organic solvent. The porosity rate is between 20 percent and 70 percent. After treatment, the microporous membrane can be transformed into electrolyte membrane; the high-rate gel polymer lithium-ion power battery can be made with a square-layered battery structure. The power battery has excellent high-rate charge and discharge performances and security performances.

The utility model relates to a polymer electrolyte film for a micro cross-linking gel state lithium-ion battery and a preparation method, which is used for making the battery. The utility model discloses the poly-acrylonitrile-methyl methacrylate with the cross-linking degree of 0.1 to 0.4 % is obtained after suspension polymerization with the monomer component mass ratio of a methyl methacrylate and an acrylonitrile of 1:9 to 4:6, then the poly-acrylonitrile-methyl methacrylate is dissolved by a polar organic solvent and coated on a formed die, finally the micro cross-linking degree polymer electrolyte film is obtained when the film is removed from the formed die, the thickness of the film is 20 to 50um, the tensile strength is 7 to 22Mpa, and the average hole diameter is 0.1to 3um. The utility model has advantages of good conductivity, good absorbing capability, good heat stability, good electrochemical stability and good mechanical property under the ambient temperature, and simple manufacturing operation, high transforming rate of polymer, economy and environmental friendliness.

The invention discloses a novel sediment solidifying agent and a preparation method thereof. The preparation method comprises the following steps: by using methyl acrylate and vinyl acetate as raw materials, adding acrylic acid and an initiator, carrying out suspension polymerization, washing with water, drying and hydrolyzing to obtain the novel sediment solidifying agent. The sediment solidifying agent has the characteristics of no toxicity, environment friendliness and certain viscosity, can expand after absorbing water, can well solidify the sediment and adsorb nutritive salts released by the sediment, and has the advantages of wide raw material sources, simple preparation method and lower cost.

The invention discloses a chitosan sponge surgical dressing and a preparation method thereof. The chitosan sponge surgical dressing includes, by mass, 0.1% to 10% of water-soluble chitosan or a salt thereof, 0.001% to 5% of a foaming agent and 0.05% to 8% of a humectant. The chitosan sponge surgical dressing provided by the invention has a good foaming effect, high adsorption capacity, powerful moisture retention, softness and good plasticity and fills a gap in excellent surgical dressings.

A laminated cookie product having a pair of outer layers which are more liquid absorbent than an inner layer when dunked in a liquid. The inner layer maintains the shape and integrity of the cookie as the outer layer absorbs more of the liquid. A plurality of indicia is provided on the cookie including a plurality of spaced line which indicates the length of the cookie immersed in a liquid and/or the amount of calories contained in the cookie between a selected indicia line and the bottom of the cookie. Aligned recesses are formed in an upper end of the cookie to facilitate gripping the cookie for dunking in a liquid.

The invention relates to a konjac glucomannan fiber wet tissue and a method for preparing the konjac glucomannan fiber wet tissue. The method for preparing the konjac glucomannan fiber wet tissue comprises the preparation of konjac glucomannan acrylic ester, acrylic ester esterification modification, the preparation of konjac glucomannan spinning solution and the preparation of the konjac glucomannan fiber wet tissue. The konjac glucomannan fiber wet tissue is made of natural fibers like konjac glucomannan and corn starch and other plasticizers, wherein the natural fibers are used as main raw materials of the konjac glucomannan fiber wet tissue. The konjac glucomannan is a natural plant polysaccharide, has good water binding capacity, hydroscopicity and antibacterial property and is large in tension strength, good in toughness, and high in tensile strength and bursting strength. Compared with a traditional synthetic fiber wet tissue, the konjac glucomannan fiber wet tissue is made of 100% natural plant fibers, has the advantages of being high in tensile strength, large in liquid absorbing amount, high in liquid maintaining amount, exquisite and soft in hand feeling, sterile, sanitary, low in production cost and free of environmental pollution and doing no harm to human bodies, and accords with modern consumption concepts and market requirements.

The invention discloses a preparation method of a polyvinylidene fluoride-hexafluoropropylene diaphragm. The preparation method comprises the following steps that (S1) the following materials are weighed in proportion: polyvinylidene fluoride-hexafluoropropylene powder, solid iodine and acetone; (S2) the polyvinylidene fluoride-hexafluoropropylene powder and the acetone are added in a reaction container; and the reaction container is put in a water bath with a certain temperature for stirring until the polyvinylidene fluoride-hexafluoropropylene powder is uniformly dispersed in the acetone; (S3) the weighed solid iodine is added in the reaction container for continuous stirring in the water bath with a certain temperature until the solid iodine is dissolved in the acetone to prepare electrolyte; and (S4) two electrode chips are inserted in the electrolyte for electrolysis to obtain the polyvinylidene fluoride-hexafluoropropylene diaphragm. The polyvinylidene fluoride-hexafluoropropylene diaphragm prepared through the method is uniform in porosity distribution; and the preparation process is simple, easy to operate, short in preparation time, high in efficiency and suitable for industrial production and application.

The invention relates to the field of medical auxiliary articles, in particular to a medical dressing set with pressure. The medical dressing set with pressure comprises a medical dressing with pressure and a separately prepared Chinese medicine bag. The medical dressing mainly consists of four layers from top to bottom, wherein the first layer is an absorption pad which does not stick to a woundand is compounded of medical water-absorbable fibers and a PE dialysis membrane; the second layer is a medical gauze cotton pad consisting of medical absorbent gauze and medical absorbent cotton; thethird layer is medical silica gel, and air-permeable artificial latex silica gel is selected as the medical silica gel; the fourth layer is medical high-elasticity waterproof adhesive tape and consists of a low-sensitivity medical pressure-sensitive adhesive and a cotton back lining, and elastic yarn is embedded in the cotton back lining. The Chinese medicine bag comprises talcum powder, lotus root node powder, mussel adhesive proteins and a coating material. The provided medical dressing set with pressure can avoid and reduce the problems of inflammation, ecchymosis, leakage, subcutaneous hematoma and the like, greatly reduce the infection probability of patients, and improve the comfort level of the patients.

The invention relates to an antibacterial deodorization paper diaper. The invention discloses an odor inhibition paper diaper, which comprises a base membrane and an absorber located at the middle part of the base membrane; the absorber and the base membrane are glued by adopting structural adhesives; the absorber comprises a large cotton core, a small cotton core and non-woven fabric which are glued in sequence by using the structural adhesives; the large cotton core is made by mixing native plant fiber stuff and macromolecule water absorbent; the small cotton core is made by mixing the native plant fiber stuff and acid macromolecule water absorbent. The odor inhibition paper diaper has the characteristics of being good in odor inhibition effect, strong in absorbing quality, sanitary and environmentally friendly, and is especially suitable for incontinent patients, such as critical patients and long-term bedridden patients.

The invention discloses a lithium iron phosphate/graphene composite material as well as a preparation method and application thereof and belongs to the technical field of a positive electrode material of a lithium-ion battery. The preparation method of the lithium iron phosphate/graphene composite material comprises the following steps: (1) taking iron phosphate dihydrate, lithium carbonate, polyvinyl alcohol and graphene sulfonate as raw materials and preparing the raw materials into slurry in a reaction kettle with stirring by adopting an absolute ethyl alcohol water solution with the concentration of 5 percent to 10 percent; adding 0.3 percent to 0.6 percent of polyvinylpyrrolidone (PVP) into the slurry as a dispersant; (2) grinding the slurry added with the dispersant through a sand mill; (3) after grinding, spraying and drying to prepare a lithium iron phosphate/graphene composite material precursor; (4) sintering the precursor in a tubular furnace at 600 DEG C to 700 DEG C for 10 to 20 hours under the protection of mixed gas of nitrogen gas and hydrogen gas; after sintering, cooling a product in the tubular furnace to room temperature to obtain the lithium iron phosphate/graphene composite material.

The invention provides a drawing method of a bonding wire. The drawing method comprises the following steps: enabling a wiredrawing module to be covered with wiredrawing lubricating oil, and then drawing a metal wire to obtain the bonding wire, wherein the wiredrawing lubricating oil comprises lubricating oil and a graphene powder. Compared with the prior art, the graphene powder is added into thelubricating oil, graphene has high liquid absorption performance, when the graphene powder is uniformly dispersed into a liquid, the graphene powder is adsorbed onto the metal wire and the wiredrawing module through Van der Waals' force so as to form a protective film, a lubricating medium between the metal wire and the wiredrawing module becomes into a graphene film from the lubricating oil, thegraphene film takes effect with the lubricating oil, in one hand, the abrasion of the wiredrawing module can be reduced, namely the service life of the wiredrawing module is prolonged by increasing the lubrication degree in the pulling process, the processing precision and finished product rate are also improved simultaneously, the production cost is reduced, and in the other hand, oxidization ofthe bonding wire can also be prevented.

The invention relates to a composite hemostatic repair material and a preparation method thereof. The hemostatic repair material is characterized in that a shell and tourmaline are adopted as main raw materials, the shell and a phosphorus source can be converted into hydroxyapatite, and chitosan sponge is used as a matrix for loading. According to the preparation method, the shell and the tourmaline are used as the main raw materials, ammonium hydrogen phosphate is used as the phosphorus source for a hydrothermal reaction, a self-generating electric field on the surface of the tourmaline has an attraction effect on charged ions in a system, the hydroxyapatite obtained through hydrothermal conversion of the shell grows on the surface of the tourmaline in situ to obtain a shell/tourmaline composite material, and then the shell/tourmaline composite material is embedded into a chitosan sponge matrix through a freeze drying process to prepare the shell/tourmaline composite hemostatic repair material. The hemostasis repair material can remarkably shorten the blood coagulation time, and achieves a good hemostasis effect.