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11009 results about "Moisture absorption" patented technology

Water absorbent resin composition and production method thereof

The water absorbent resin composition and the production method thereof according to the present invention are characterized by including: water absorbent resin particles having an internal cross-linked structure obtained by polymerizing a water-soluble unsaturated monomer; a nitrogenous ketone compound (A) (containing no carboxyl group) having a structure represented by formula (1); and a bivalent and/or trivalent and/or tetravalent water-soluble metal salt, wherein a total amount of the nitrogenous ketone compound (A) and the bivalent and/or trivalent and/or tetravalent water-soluble metal salt ranges from 0.01 to 100 parts by mass with respect to 100 parts by mass of the water absorbent resin particles, thereby providing a water absorbent resin composition, having an excellent absorption capacity represented by a centrifuge retention capacity (CRC), an absorbency against pressure of 4.83 kPa (AAP) etc., having excellent liquid permeability and liquid diffusion properties, having excellent fluidity at the time of moisture absorption, having an excellent damage resistance property, effectively suppressing occurrence of dusts, hardly bringing about permeation of added metal compounds into water absorbent resin particles, hardly bringing about segregation of added metal compounds.
Owner:NIPPON SHOKUBAI CO LTD

Graphene blend regenerated cellulose fiber and preparation method thereof

The invention relates to a graphene blend regenerated cellulose fiber. The graphene blend regenerated cellulose fiber is prepared by mixing an oxidized graphene solution and a regenerated cellulose solution, molding a mixture through a viscose wet spinning process and reducing the mixture; the dry breaking strength of the graphene blend regenerated cellulose fiber is not less than 1.8 cN/dtex, the wet breaking strength of the graphene blend regenerated cellulose fiber is not less than 0.9 cN/dtex, the dry breaking elongation of the graphene blend regenerated cellulose fiber is not less than 16%, the mass specific resistance of the fiber is 1-9X106 omega.g/cm2, and the thermal decomposition temperature of the fiber is not lower than 400 DEG C; and with the regenerated cellulose fiber as a matrix, the prepared graphene blend regenerated cellulose fiber has the advantages of good moisture absorption, good air permeability, soft handle and good dyeing performance and has the characteristics of ultrahigh strength, thermal conductivity, electric conductivity, antibacterial property and the like of the graphene; the conductive and thermal properties of the fiber are both improved by being compared with those of the traditional regenerated cellulose fiber; the antibacterial property of the fiber is additionally provided; and the graphene blend regenerated cellulose fiber provided by the invention has the advantages of simple production process, easiness in operation, and higher yield. People estimate that the developed graphene blend regenerated cellulose fiber can be widely applied to the field of costumes, industrial textiles and the like.
Owner:JINAN SHENGQUAN GROUP SHARE HLDG +1

Novel inorganic decoration base material plate and preparation method thereof

InactiveCN105130350AImprove water and moisture resistanceAdjust clotting timeSucroseMoisture absorption
The present invention discloses a novel inorganic decoration base material plate and a preparation method thereof. The novel inorganic decoration base material plate is prepared from the following raw materials by weight: 45-50% of magnesium oxide, 15-20% of magnesium sulfate, 1-1.5% of a modifier, 5-10% of a filler, 1-5% of a reinforcing material, and the balance of water. According to the present invention, the magnesium sulfate is used to replace the magnesium chloride as the gelling material, such that the prepared base material plate almost does not contain chlorine ions; the mixture of citric acid, sodium citrate and sucrose is adopted as the modifier so as to adjust the condensation time and significantly increase the water resistance and the dampness resistance of the base material plate; and the prepared base material plate has characteristics of good waterproof performance, no moisture absorption efflorescence, high strength, cracking deformation resistance, good flexibility, good durability, significantly improved fireproof performance, no formaldehyde release during production and use processes, safety and environmental protection, and can be widely used as the base plates of fireproof plates, suspended ceiling plates, decorative plates, partition boards and other plates.
Owner:惠州美森板业有限公司

Composite polystyrene heat insulation material and preparation method of heat insulation board

The invention discloses a fireproof and flame-retardant composite polystyrene heat insulation material and a method for preparing a heat insulation board by using the material, which belongs to the technical field of the heat insulation boards. The composite heat insulation board combining an inorganic heat insulation material and an organic heat insulation material has the characteristics of fireproof property, heat insulation, flame-retardant property and low heat conductivity of the organic material, so the fireproof and flame-retardant performance of the composite heat insulation material can be improved based on unchanging the heat conductivity of the polystyrene. The method for preparing the composite heat insulation board is simple and easy to operate; each polystyrene granule is covered with a layer of a fireproof and flame-retardant material on the surface, so that each granule forms an integrated and independent unit, thereby effectively interrupting the conduction of the heat and the spread of the flame to achieve a non-combustion effect. The prepared composite polystyrene heat insulation board has the advantages of light weight, low heat conductivity, good heat insulation effect, high tensile strength, good toughness, high size stability, low moisture absorption and good flame resistance, and the combustion performance can be A2 grade (GB8624-2006).
Owner:河南铝城聚能实业有限公司

Carbon fiber prepreg, and a production process thereof

PCT No. PCT/JP97/04642 Sec. 371 Date Aug. 11, 1998 Sec. 102(e) Date Aug. 11, 1998 PCT Filed Dec. 16, 1997 PCT Pub. No. WO98/26912 PCT Pub. Date Jun. 25, 1998The present invention relates to a carbon fiber prepreg. The carbon fiber prepreg of the present invention is characterized in that a carbon fiber bundle comprising a plurality of continuous carbon filaments and having a hook drop value of 10 cm or more as the degree of fiber entanglement is impregnated with a base resin mainly composed of a thermosetting resin, and that particles of 150 mu m or less in particle size made of a thermoplastic resin account for 20 wt % or less based on the weight of the entire prepreg and distributed at a higher concentration in the surface zone than in the inside. The carbon fiber prepreg of the present invention is good in tackiness and less changing in tackiness with the lapse of time, and can form a composite with an excellent compression interlaminar shear strength (CILS) at high temperature after moisture absorption while maintaining good impact resistance. It also allows the production of a composite very higher than the conventional composite in the compressive strength (LCS) of a cross laminated panel. The carbon fiber prepreg of the present invention can be preferably used as a structural member in such areas as aerospace area, sporting area and civil engineering and architecture area.
Owner:TORAY IND INC

Bamboo shoot clothing packaging box and production process thereof

The invention relates to a packaging box, in particular to a bamboo shoot clothing packaging box which is formed by adopting bamboo shoot clothing (commonly called bamboo shoot shells, bamboo shells and indocalamus shells) made of moso bamboos (phyllostachys pubescens), phyllostachys parvifolia, dendrocalamus latiflorus, phyllostachys praecox, fargesia utilis, overlord bamboos and the like as raw materials (give priority to the moso bamboos) and processing through the processes of raw material purchasing and storage, rinsing, harmless treatment (insect control, mildew prevention, fiber softening, color development and mercerization), washing, drying, flattening, cutting, gluing (glue spraying or blanching and gluing), collage (blanching and collage), polishing, laser printing, inspecting, warehousing and the like. The bamboo shoot clothing packaging box has the main characteristics of moisture absorption and mildew prevention, insect control and corrosion resistance, stain repellence and scale prevention, is an ideal preferred package of tea leaves, tobaccos, food, instruments, jewelry and other products and has very extensive purpose; meanwhile, the bamboo shoot clothing packaging box is fashionable and attractive in appearance, realizes low carbon and environmental protection, is durable and fully embodies the change of wastes into valuables; moreover, a new high-quality laying and decoration material and a processing technology can be provided for the packaging industry in China.
Owner:CHIBI JIAXIANG BAMBOO SHOOT DEV

One-way moisture-conducting cashmere and cashmere blended woven fabric or knitted product and processing method thereof

InactiveCN101649558ASolve moisture absorptionSolve the contradiction of dehumidificationVegetal fibresAnimal fibresEngineeringMoisture absorption
The invention relates to a one-way moisture-conducting cashmere and cashmere blended woven fabric or knitted product and a processing method thereof. A double-lateral surface structure with differenthydrophilic and hydrophobic properties is constructed at the front and reverse sides of the woven fabric product in a single-face liquid feeding way, wherein the front sides of the products are all hydrophilic sides with favorable hygroscopic property, hydrophobic areas with a hydrophobic structure are discontinuously distributed at the reverse side of the product, and the hydrophobic area occupies 20-80 percent of the total area of the lateral side. The processing method comprises the steps of preprocessing fabric, mixing printing paste and finishing agent, printing or feeding liquid at single side, drying, washing and shrinking, processing flexibly, drying again and finally ironing. The invention has the advantages of reasonably solving the contradiction between moisture absorption and moisture discharge as well as the contradiction between hydrophilic and hydrophobic of the fabric, ensuring favorable one-way moisture-conducting effect, achieving the aim of conducting sweat from oneside clinging to the skin to outside and maintaining relatively dry and comfortable efficiency at one side of the skin.
Owner:INNER MONGOLIA ERDUOSI CASHMERE PRODS

Moisture absorption perspiration-discharging dressing agent and its manufacturing technique and application

The invention discloses the formula, the production process and the application of moisture absorbent and sweat conductive comfortable finishing agent which is used for modifying the polyester fiber to enable the polyester fiber to have moisture absorbent and sweat conductive capabilities. The formula of the moisture absorbent and sweat conductive comfortable finishing agent contains: polyethylene glycol, ethylene glycol, polyether and dimethyl terephthalate. The two-step continuous production process is adopted: in the first step of esterifying, polyethylene glycol, ethylene glycol, polyether and dimethyl terephthalate are put into a reaction vessel for esterification under the action of catalysts; and in the second step that the material produced after the esterification is transported to a polymerization kettle for polymerization under the actions of high temperature, vacuum, and catalysts, in order to generate polyester-polyether copolymer with high molecular weight to be 30000-50000, namely, the moisture absorbent and sweat conductive comfortable finishing agent. The moisture absorbent and sweat conductive comfortable finishing agent can be directly used or be used after being mixed with substances such as amino silicone oil and so on, and carry out chemical modification on the polyester fiber.
Owner:DUPLUS CHEM OF ZHANGJIAGANG CITY

Porous complex gel-nanofiber oxygen permeation dressing and preparation method thereof

The invention discloses a porous complex gel-nanofiber oxygen permeation dressing and a preparation method thereof. The method comprises the following steps: obtaining a collagen nanofiber membrane by adopting a collagen solution by virtue of an electrostatic spinning method; performing chemical crosslinking on two natural and non-toxic macromolecule polysaccharides such as chitosan and alginic acid, and preparing complex gel; and preparing the porous sponge-nanofiber double-layer composite material in a freeze-drying mode, wherein the upper gel layer of the dressing is in a sponge state during drying and is in a gel state after moisture absorption. The biological wound dressing is prepared under the condition that any toxic chemical crosslinking agent is not added, the process is simple, and the safety is high. The prepared biological wound dressing disclosed by the invention has the characteristics of excellent oxygen permeation performance, water-absorbing quality, water permeability, moisture penetrability and high biocompatibility, a physiological wet environment of the wound surface can be maintained, wound healing and effective haemostasis are promoted, wound infection can be avoided, the recovery is accelerated, the wound surface can be effectively recovered, and the dressing is applied to multiple wound surfaces such as trauma, burns and ulceration.
Owner:FOURTH MILITARY MEDICAL UNIVERSITY

Glass-magnesium plate

ActiveCN101871246AAvoid moisture absorption and return to halogenImprove performanceConstruction materialCovering/liningsFiberglass meshGlass fiber
The invention relates to architectural and decorative materials, in particular to a glass-magnesium plate comprising a forming agent, a reinforcement material, a light filler, a modifier and water, wherein the forming agent is magnesia, magnesium sulfate and magnesium chloride, the reinforcement material is a glass fibre grid fabric or other reinforcement materials, and the modifier comprises a whitening agent, a stabilizing agent and a toner. Compared with the prior art, the invention achieves the aims of stabilizing chlorine ions and preventing the moisture absorption and the halogen return of the glass-magnesium plate by lowering the content of the magnesium chloride and combining the stabilizing agent, also enhances the comprehensive performance of the glass-magnesium plate greatly under the combined action of the forming agent, the reinforcement material, the light filler, the whitening agent, the stabilizing agent and the toner and enables the glass-magnesium plate to reach or exceed the national or industrial standard requirement simultaneously in the aspects of folding strength, impact strength, drying shrinkage, bulking factor, screw holding capability, incombustibility and the like, so that the invention enhances the application range of the glass-magnesium plate greatly and can be widely used for the basal plate of plate materials, such as a grouting plate, a fire-proof plate, a ceiling plate, a decorative plate, a sound-absorbing plate, a partition plate and the like.
Owner:秦皇岛万建隆科技有限公司
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