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

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 belongs to the field of lithium ion batteries, and specifically discloses a gel polymer electrolyte membrane and a preparation method and an application thereof. The preparation method comprises the steps of: firstly, performing emulsion polymerization by a n-butyl methacrylate monomer, an acrylonitrile monomer and a styrene monomer of different proportions to obtain a copolymer; secondly, under an ultrasonic condition, dispersing a certain amount of nano particles in a solvent for a period of time, dissolving a polymer powder into the solvent to obtain a sticky gel, and then obtaining a gel polymer ceramic membrane through a phase-transfer method; and finally, soaking the membrane into electrolyte, then a gel polymer electrolyte is obtained. The gel polymer electrolyte provided by the invention is high in safety performance, strong in ability to absorb the electrolyte, and high in electrochemical stability window; after being assembled into a button cell, through a circulation of 150 weeks, 93% of an initial capacity can still be maintained. The preparation process of the invention is very simple and the raw materials are cheap and easily available; and the invention provides a gel electrolyte which can be directly used to a polymer lithium ion battery, which is convenient for industrial production.

The invention relates to an electric control marking system for an electrocorrosion marking production line. The electric control marking system comprises a marking executing mechanism and a marking head connected with the marking executing mechanism. The marking executing mechanism comprises a fixing frame and a marking driving device arranged on the fixing frame. The electric control marking system is characterized in that the fixing frame is an oblique-pulling type fixing frame, the marking driving device comprises a stepping motor, a lead screw, a sliding sleeve, a straight line bearing and a sliding track, and the marking head comprises an organic glass lining plate, a fixing frame, a graphite block, carbon felt, a conducting net, an electrode piece, a marking head locating sleeve, a lead wire connected with a pole piece with electricity, a marking liquid injection pipe, a marking liquid sucking pipe, a filter and a marking liquid storage and peristaltic pump. The electric control marking system has the advantages that stroke is accurate, pressure is constant, the structure is stable, locating is accurate, operation is convenient, model changing is convenient, speed is high, production efficiency is high, worker operation labor intensity is low, liquid providing is even, circulating using is achieved, liquid sucking force is strong, liquid flowing is avoided, energy is saved, and environment is protected.

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 amountof 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<3> and the liquid-absorbing ratio of between 1,800 and 2,800 percent, and can be applied to medical operations.