228 results about "Moisture permeability" patented technology

The invention relates to a flash evaporation material with high transparent strength and a preparation method thereof, the flash evaporation material comprises the following raw materials: polyethylene with high transparent strength of 0.2-3 kN / m; the high-permeability strength is equal to the moisture permeability index * the longitudinal tensile strength; the test standard of the tensile strength is a constant-speed tensile method for testing the tensile strength of paper and paperboards according to GBT 12914-2018; the test standard of the moisture permeability index is GB / T 11048-2018 determination of thermal resistance and moisture resistance (evaporation hot plate method) under the physiological comfort steady state condition of the textile. The flash evaporation material disclosed by the invention has relatively good high-transmittance strength.

The invention relates to the technical field of polymer functional material processing, and particularly discloses a polyethylene waterproof breathable film using PTFE micro powder as an opening agent and a preparation method of the polyethylene waterproof breathable film. The waterproof breathable film is prepared from the following components in parts by weight: 50-70 parts of linear low-density polyethylene, 10-40 parts of PTFE (Polytetrafluoroethylene) micro powder, 3-8 parts of a modified compatilizer and an auxiliary agent. The preparation method comprises the following steps: S1, activating PTFE micro-powder by a silane coupling agent and coating the PTFE micro-powder with polyethylene wax to obtain modified micro-powder; s2, uniformly mixing all the components; s3, carrying out melt extrusion at 180-210 DEG C through a double-screw extruder, and carrying out tape casting to form a cast sheet; s4, the casting piece is heated to 90-115 DEG C for two-way stretching, and micropores are formed through interface stripping between the PTFE particles and the base body; and S5, carrying out heat setting at 120-130 DEG C, cooling, and rolling to form the film. Through the synergistic effect of the self-made compatilizer and the pretreatment process, the interface anchoring force is enhanced, the problems of powder falling and water leakage of highly-filled PTFE are solved, and meanwhile, high moisture permeability, high hydrostatic pressure resistance and high mechanical property are taken into account.

This invention relates to the field of polyurethane glove manufacturing technology, specifically an innovative manufacturing method for waterproof and breathable polyurethane gloves with significantly improved waterproof, breathable, and mechanical properties. The method includes lining finishing, impregnation with a coagulant followed by drying, impregnation with polyurethane foam slurry followed by drying, impregnation with polyurethane slurry followed by drying, and impregnation with particle slurry followed by drying. During the drying process after impregnation, the hand mold's rotation, combined with improvements to its structure, generates airflow within the mold. This airflow is guided to the mold surface, circling around the impregnated area and creating airflow. This airflow effectively removes moisture generated during the drying process, accelerating the drying process and ensuring uniform drying. This avoids the problems of reduced waterproof performance, deteriorated mechanical properties, and altered breathability that often occur after polyurethane glove molding, thus improving the waterproof and breathable properties of the polyurethane gloves.

The utility model relates to the technical field of functional fabrics and garments, and provides a novel composite fabric and a thermoregulation garment, the novel composite fabric comprises a water repellent layer, a waterproof vapor-permeable layer and a thermoregulation layer which are sequentially arranged from outside to inside, and a bonding layer with a net structure is arranged between every two layers, the waterproof and vapor-permeable layer is a TPU waterproof and breathable film, water drops are prevented from passing through the waterproof and vapor-permeable layer, and meanwhile, the waterproof and vapor-permeable layer has excellent air and moisture permeability, the temperature-regulating layer is a PCM phase-change temperature-regulating fabric, and a phase-change material in the PCM phase-change temperature-regulating fabric can regulate heat and provide a comfortable microclimate environment for a human body, so that the composite fabric has excellent properties of the three kinds of fabrics, and the composite fabric is suitable for popularization and application. And the automobile seat cushion is high in comfort and can be applied to different weather and environment temperatures at the same time. Besides, the water-repellent fabric is formed by interweaving the water-repellent polyester yarns, and the PCM phase-change temperature-adjusting fabric is formed by interweaving the temperature-adjusting fiber yarns, so that the composite fabric has better functional durability and is resistant to washing.

The application provides a microcapsule, a composite fabric, a preparation method of the composite fabric and a summer quilt. The preparation method of the composite fabric comprises the following steps: A1, treating the top surface and the bottom surface of a moisture-permeable layer by using oxygen plasma; A2, adding microcapsules and a crosslinking agent into water to obtain a sticky liquid; coating the sticky liquid on the bottom surface and the top surface of the moisture-permeable layer in a dotted form, bonding the moisture-permeable layer and a moisture-removing and air-permeable layer by taking the top surface of the moisture-permeable layer as a bonding surface, bonding the moisture-permeable layer and a skin-friendly cool layer by taking the bottom surface of the moisture-permeable layer as a bonding surface, drying and hot pressing; the microcapsule comprises a core material and a shell covering the outside of the core material, the core material comprises a glue, and the glue is selected from glue A or glue B or a combination of the two, the glue A is a solvent-free moisture curing reaction type polyurethane hot melt adhesive, and the glue B is an acrylate with an epoxy group and / or a urethane group. The application can guarantee the moisture permeability and air permeability of the composite fabric.

To reduce stickiness in water-soluble unit-dose products. [Solution] The unit dose article packaging 10 contains a water-soluble unit dose article W. The unit dose article packaging comprises a packaging material 20 and a plurality of water-soluble unit dose articles. The packaging material has a storage section 23 and a dispensing opening 11, and in a closed state with the dispensing opening closed, the moisture permeability from the outside space to the storage section is 10 g / m³. 2 • Less than 24 hours. The plurality of water-soluble unit dose articles are contained in the storage section.

The present application relates to a kind of sweat lead-out flat knitting shoe upper fabric and weaving method, fabric is woven by two different single-fiber linear density yarn A, yarn B and hot melt multifilament C, and is formed by loop, tuck and float to form shoe upper fabric, the surface of shoe upper fabric is granular microconvex structure, the front of fabric is formed by yarn A protrusion, yarn B, hot melt multifilament C forms microconcave in the front of fabric.The unidirectional sweat conducting performance of flat knitting shoe upper fabric prepared by the present application is good, can keep the dryness inside shoe cavity, improves the perspiration performance of shoe upper fabric and has moisture permeability and air permeability.

The invention discloses a preparation method and application of a super-hydrophobic antifouling coating with a self-repairing function, and belongs to the technical field of modification of self-repairing super-hydrophobic coatings of textiles. The method comprises the following steps: mixing boric acid, ethanol and n-octadecyltriethoxysilane, heating and stirring to completely dissolve the boric acid to obtain a mixed solution; and dropwise adding water into the mixed solution while heating and stirring, and then standing and reacting to form a B-O-Si covalent bond, thereby obtaining the super-hydrophobic antifouling coating material. After the fabric is subjected to immersion treatment by the super-hydrophobic antifouling coating material, a good dynamic hydrophobic effect is shown, the original air permeability and moisture permeability of the fabric are hardly influenced, and compared with the original fabric, the air permeability is reduced by 1.9-6.6%, and the moisture permeability is reduced by 3.2-4.8%; after the super-hydrophobic antifouling coating fabric is worn and damaged by washing, the super-hydrophobic performance can be recovered under the condition of standing for 180 minutes or heating at 110 DEG C for 30 minutes.

The present invention provides a building that allows for a sense of unity between the ceiling surface facing the interior space and the exterior wall surface, while suppressing the concentration of volatile organic compounds within the interior space. [Solution] The building 100 according to this disclosure is a building 100 having an interior space R1 partitioned from other spaces R2, R3, OT by partition members, wherein the partition members constituting the ceiling material CL of the interior space R1 and the outer wall WL1 of the building 100 have cavities sp1, sp3 and two partition members (first partition member wo1, c1 and second partition member wo2, c2) facing each other with the cavities sp1, sp3 in between, and the partition member (first partition member wo1, c1) on the interior space R1 side of the two partition members (first partition member wo1, c1) is capable of adsorbing or decomposing volatile organic compounds through the surface exposed into the cavities, and the moisture permeability of the interior space R1 side surface of the partition member on the interior space R1 side is 1000 [g / m³] 2 The system is characterized by the placement of finishing materials wf and cf with a shelf life of less than 24 hours.

The present application relates to a kind of antistatic humidity regulating polyester composite fabric and its preparation method.The fabric includes polyester matrix layer, humidity regulating layer, conductive mesh layer and discrete adhesive layer from inside to outside.The humidity regulating layer is polyvinyl alcohol and polyurethane interpenetrating network porous membrane, the thickness is 15-40 μm, and its calcium chloride mass fraction and pore size increase along the film thickness direction, with good humidity regulating performance;The conductive mesh layer is woven by core-sheath type conductive filament, which enhances the antistatic performance of the fabric;Discrete adhesive layer is point-like heat-light curing acrylate adhesive, which ensures stable bonding between layers and maintains good moisture permeability.The preparation method includes freeze-thaw cycle preparation of humidity regulating layer, corona treatment of conductive mesh layer and light curing process of discrete adhesive layer.The composite fabric has excellent humidity regulating effect, antistatic performance and good wearing comfort.

The application relates to a nanofiber membrane and a preparation method and application thereof, and the preparation method comprises the following steps: (1) mixing polyurethane, nano lanthanum oxide, a waterproof agent and a solvent to obtain a spinning solution; (2) preparing an electrostatic spinning membrane through electrostatic spinning of the spinning solution; (3) spraying a finishing liquid on the electrostatic spinning membrane, and then performing heating treatment to obtain the nanofiber membrane. The polyurethane is stretched into superfine fibers through the electrostatic spinning technology, and a superhigh porous membrane similar to a spider web is prepared, the porous membrane has billions of nanoholes per square centimeter of the membrane, the nanofiber membrane has high air permeability and waterproof and moisture permeability, and the fibers are bound through a fiber bonding point technology, so that the fabric has excellent washing resistance. The nano lanthanum oxide heating functional particles are added to endow the nanofiber membrane with heating and heat storage functions, and further improve the washing resistance of the fabric.

This moisture-permeable waterproof fabric comprises at least a fiber fabric and a porous film laminated on one face of the fiber fabric. The moisture-permeable waterproof fabric is characterized in that: the water pressure resistance measured pursuant to JIS L1092 B method (high water pressure method) before washing is 150 kPa or more; the water pressure resistance after washing for ten times pursuant to JIS L 1930 Appendix F C4M is 50 kPa or more; the moisture permeability measured pursuant to JIS L 1099 A-1 method (calcium chloride method) is 6,000 g / m2･24h; and no fluorine-based compound is contained.

Provided is a laminate having excellent moisture permeability and interlayer adhesion. A laminate having a base material and a moisture-permeable film in contact with at least one surface of the base material, the moisture-permeable film comprising a cured product of a moisture-curable hot-melt polyurethane resin composition, the moisture-curable polyurethane hot-melt resin composition contains a urethane prepolymer obtained by reacting a polyol (A) containing polyethylene glycol and / or a polyoxyethylidene polyoxypropylene glycol (a1) with a polyisocyanate (B), and the moisture-curable polyurethane hot-melt resin composition is characterized in that: the moisture-curable polyurethane hot-melt resin composition contains a urethane prepolymer obtained by reacting a polyol (A) containing polyethylene glycol and / or polyoxyethylidene polyoxypropylene glycol (a1) with a polyol (B);

The invention provides a protective clothing fabric for water area rescue. The protective clothing fabric is composed of a surface layer, a heat preservation and moisture absorption layer, a semi-permeable membrane layer and an inner layer which are sequentially laminated and bonded through hot melt adhesive and have sealed end edges, wherein the surface layer is a liquid water barrier formed by polyamide base cloth and a waterproof coating coated on the surface of the polyamide base cloth; the heat-preservation moisture-absorption layer is formed by weaving polyester hollow fibers and polyacrylate fibers spirally wound on the periphery of the polyester hollow fibers, and moisture-absorption particles are loaded on the outer surfaces of the fibers; the semi-permeable membrane layer adopts a microporous polytetrafluoroethylene membrane which is arranged in a gradient manner; the inner layer is formed by blending bamboo charcoal fibers and polyacrylate fibers, and the moisture absorption efficiency of the heat preservation and moisture absorption layer is higher than that of the inner layer. The fabric realizes balance of water resistance and moisture permeability and synergism of heat preservation and moisture absorption, has the advantages of light weight, movement flexibility, durability and comfort, and remarkably improves the operation efficiency of water area rescue protective clothing.

The invention relates to the field of new textile materials, and discloses a high-breathability waterproof fabric and a preparation method thereof.The fabric comprises a surface layer fabric, a functional middle layer and an inner layer fabric which are sequentially laminated and compounded; the surface layer fabric is a polyester filament yarn fabric finished by a self-crosslinking type fluoride-free water-repellent emulsion consisting of octadecyl acrylate, dodecyl methacrylate and N-hydroxymethyl acrylamide; the functional middle layer is a polytetrafluoroethylene microporous membrane coated with a moisture curing type hydrophilic polyurethane adhesive, and the raw materials of the adhesive comprise polyethylene glycol 2000, 2, 2-dimethylolpropionic acid and isophorone diisocyanate; and the inner-layer fabric is a superfine denier polyester fiber and bamboo charcoal fiber blended knitted fabric. The contradiction that the air permeability and the bonding fastness of the PTFE microporous membrane are difficult to consider at the same time is effectively solved through a gradient pressurization process, meanwhile, one-way moisture conduction is achieved through the inner-layer superfine fibers and the middle-layer hydrophilic component, and the PTFE microporous membrane has high hydrostatic pressure resistance, high moisture permeability and excellent washing fastness.

The application provides a multifunctional waterproof structure water vapor permeability comprehensive test device. It belongs to the technical field of building material water vapor permeability testing. The non-uniform water pressure simulation and application system can truly simulate the triangularly distributed hydrostatic pressure borne by the wall in underground engineering through the cooperative design of the tiltable rigid support frame and the pressurized liquid. The test piece installation and inclination adjustment system can simulate the underground continuous wall or the slope retaining wall with different inclinations by adjusting the inclination of the rigid support frame. The non-uniform water pressure simulation and application system can simulate various groundwater conditions from low water level to high water level by adjusting the set value of the fluid pressure system. It can cover various liquid water permeation scenarios, has wide test range and strong applicability. The environment simulation and moisture permeability test system can realize the integrated test and flexible switching of the liquid water barrier and the gaseous water migration performance, complete the test of the two modes on the same test piece in turn, has strong data comparability and high test efficiency.

This invention belongs to the field of biomedical materials, specifically providing a highly permeable hydrophilic polyurethane artificial membrane based on chemical grafting and its preparation method, comprising the following steps: S1 - Substrate pretreatment: Immersing a polyurethane film in an organic solvent, ultrasonically cleaning and soaking for 0.5-2 hours, then removing and drying to constant weight to obtain a pretreated substrate; S2 - Preparation of hydrophilic modified polyurethane: Completely immersing the substrate obtained in step S1 in a hydrophilic modification solution, introducing an inert gas for 10-30 minutes, heating to 35-45°C, and reacting under stirring or shaking in the dark for 6-24 hours to obtain a hydrophilic modified polyurethane membrane; S3 - Post-treatment: The hydrophilic modified polyurethane membrane from step S2 is sequentially acid-washed, water-washed, and then vacuum-dried to obtain the hydrophilic polyurethane artificial membrane. The hydrophilic polyurethane artificial membrane of this invention, prepared by chemical grafting, possesses high permeability and excellent mechanical properties.

This invention relates to a nanofiber highly breathable medical protective clothing fabric and its preparation method. The fabric comprises an outer protective fabric, a middle nanofiber membrane, and an inner fabric, which are sequentially composited. It mainly relies on nanofibers for filtration. The nanofibers have small diameters, large specific surface areas, high filtration efficiency, high porosity, and high moisture permeability, exceeding 9000 g / (m2·24h), which is far higher than the standard requirements for moisture permeability of existing disposable medical protective clothing, thus increasing the wearing comfort of medical personnel.

The invention provides a light-weight high-strength tear-resistant outdoor waterproof fabric and a preparation method thereof, and belongs to the technical field of textile fabrics. The fabric is composed of a base cloth layer, a nanofiber waterproof film layer and a hydrophobic coating. The preparation method comprises the four steps of base cloth preparation, nanofiber waterproof membrane preparation, hot-pressing compounding and hydrophobic coating coating, and firm combination of all layers of the fabric is achieved through electrostatic spinning membrane preparation and hot-pressing compounding instead of adhesive compounding in cooperation with precise technological parameter control. The gram weight of the fabric is smaller than or equal to 100g / m < 2 >, the tearing strength is larger than or equal to 900N, the hydrostatic pressure is larger than or equal to 160kPa, the fabric is light, high in strength, resistant to tearing, high in waterproof moisture permeability, high in interlayer binding force and resistant to bending, the preparation process is environmentally friendly and easy to industrialize, and the fabric is suitable for outdoor tarpaulin scenes such as storage covering, logistics transportation, camping, sojourn and the like and has good market application prospects.

A hot melt adhesive film having no urethane group [-NH-C (O)-O-] comprises a polyester base material layer having a moisture permeability of 5000 g / m < 2 > * 24 hr or less and a hot melt adhesive layer provided on the polyester base material layer. The hot melt adhesive layer comprises regenerated copolyester. The regenerated copolyester has a melting point of from 80 DEG C to 130 DEG C, a glass transition temperature of from-60 DEG C to 10 DEG C, and a heat enthalpy of from 5 J / g to 30 J / g. The regenerated copolyester is obtained by processing a polyester recovery regenerated material component, and the regenerated copolyester comprises 50 to 100 mol% of a first carboxylic ester chain segment represented by a formula (I), 0 to 35 mol% of a second carboxylic ester chain segment represented by a formula (II), and 0 to 15 mol% of a third carboxylic ester chain segment represented by a formula (III) based on the regenerated copolyester. The regenerated copolyester has more than 20 wt% of a recycled component derived from a polyester recycled material component. The invention also provides a composite laminated body without the carbamate group, which comprises the hot melt adhesive film without the carbamate group. The definitions of R11, R21, R31 and R32 refer to the description and the claims.

The raw materials for preparing this low-moisture-resistance transparent TPEE film include the following components: 85-95 parts of thermoplastic polyester elastomer, 1-10 parts of inorganic opening agent, 0.1-2 parts of organic slip agent, 0.1-2 parts of nucleating agent, and 0.1-1 parts of antioxidant. The preparation method involves first mixing the above components evenly using a mixer; then transferring the mixture into a barrel and baking the barrel with hot air at 85-125 degrees Celsius for 3-12 hours; next, feeding the baked mixture into a single-screw melt extruder of a blown film machine or casting machine using a feeder; finally, extending and shaping the molten mixture into a TPEE film using the cooling and shaping system of the blown film machine or casting machine, and then traction, stretching, and winding the TPEE film using a slitting system to obtain the low-moisture-resistance transparent TPEE film. This low-moisture-resistance transparent TPEE film exhibits excellent moisture permeability, water pressure resistance, and can be laminated with polyester fabrics, allowing for secondary recycling.

The invention relates to a protective clothing moisture permeability detection device, and relates to the technical field of material detection technology, the protective clothing moisture permeability detection device comprises a pedestal with a top opening, a steam chamber and a steam generator arranged in the pedestal, and a breathable mesh plate; the bottom of the detection box is not closed to form an air inlet, the air inlet is communicated with the steam cavity through a breathable net plate, a plurality of partition plates are arranged in the detection box in parallel and at uniform intervals, the partition plates divide the interior of the detection box into a plurality of detection areas, and a plurality of partition plates are arranged in the detection areas in parallel and at uniform intervals; the plurality of spacing plates divide the detection area into a plurality of independent detection units; an adsorption piece is arranged in the detection unit. The method has the advantage that large-area gridding multi-point synchronous moisture permeability evaluation can be carried out on the cloth.

The objective is to provide a highly practical fiber laminate structure and waterproof and breathable fabric that not only exhibits excellent moisture permeability and waterproofness, but also maintains excellent waterproofness (damp heat resistance) after prolonged use, and boasts excellent recycling efficiency. The fiber laminate structure of this invention comprises a woven knitted fabric with a non-porous resin layer on the fabric. The resin layer includes resin A and elastomer B, wherein resin A and elastomer B are any combination of polyamide and polyamide-based elastomers, or polyester and polyester-based elastomers. The phases of resin A and elastomer B are either co-continuous or island-continuous.

The invention discloses a piezoelectric film with bionic textures and a preparation method and application thereof, the piezoelectric film is formed by directionally stacking and depositing fibers with core-shell structures, the piezoelectric film has a gully-bulge alternating bionic morphology imitating human skin surface textures, and the aperture of the piezoelectric film is gradually increased from an attachment surface in the thickness direction; the fiber having the core-shell structure comprises: a core layer having a porous structure and containing modified molybdenum disulfide and polyester; the shell layer wraps the core layer, and the shell layer contains collagen; the piezoelectric film comprises a sensing unit area and a flexible connection area, the collagen crosslinking degree of the sensing unit area is larger than 75%, and the collagen crosslinking degree of the flexible connection area is 40%-55%. Under the synergistic effect of materials and structures, the piezoelectric film not only has a high piezoelectric constant, but also shows excellent mechanical properties, air permeability and moisture penetrability, and has wide application prospects in the fields of electronic skin, health monitoring and the like.

To provide a laminated optical film in which at least an iodine-based polarizer and an optical film, particularly a phase difference film, are laminated via an adhesive layer, and which can sufficiently prevent corrosion of a panel or sensor of an image display device even when used under high temperature and high humidity conditions. [Solution] A laminated optical film in which at least an iodine-based polarizer and an optical film are laminated via an adhesive layer, wherein the adhesive layer is a cured layer of an adhesive composition containing at least a (meth)acrylate compound and a photopolymerization initiator, and the cured layer has a storage modulus of 1.0 × 10⁻¹⁰ at 60°C-90% humidity. 8 Pa or higher and moisture permeability of 150 g / m² 2 • A laminated optical film with a curing time of 24 hours or less. Preferably, the cured layer has a glass transition temperature of 65°C or higher at a relative humidity of 90%.

The utility model provides a weft knitting pique mesh fabric which comprises a fabric body, the fabric body is of a pique structure formed by weft knitting of 14 paths of yarn in each cycle, the 14 paths in each cycle comprise four paths of polyester fully drawn yarn (FDY) and other paths of different yarn, and the other paths of different yarn comprise ten paths of polyester draw textured yarn (DTY) and spandex yarn. The polyester draw textured yarn DTY, the polyester fully drawn yarn FDY and the elastic spandex yarn are woven through knitting needle arrangement and triangular arrangement, the fabric is moderate in gram weight, soft in hand feeling and good in breathability, moisture absorption and breathability, and the fabric is elastic and more close-fitting but not prone to deformation in the wearing process. In addition, by controlling the yarn feeding amount, the tension of the fabric is uniform, and the fabric has good durability and dimensional stability.

The application discloses a kind of nano-silica polycarbonate film moisture permeability detection device, it is related to polycarbonate film detection technical field, including water storage tank and adjusting assembly, the top of water storage tank is connected with load disc by one-way valve, and the inside of load disc is placed with lower partition, the top of lower partition is provided with top cover, and the inside of top cover is placed with upper partition, the periphery of load disc is connected with connecting assembly.The application forms multiple independent test chambers by lower partition and upper partition, which makes it possible to place the same sample in multiple different humidity environments simultaneously and efficiently for comparison testing when detecting the moisture permeability of nano-silica polycarbonate film. The humidity environment is accurately generated by the humidifying unit and drying unit, and the mixture ratio of dry and wet gas input into each chamber is flexibly adjusted by the bus adjusting valve, thereby achieving wide-range humidity control.

The utility model relates to the technical field of moisture permeability testing instruments, and discloses a film moisture permeability testing instrument which comprises a testing instrument body, a cabinet door is hinged to the front face of the testing instrument body, a partition plate is fixedly connected to the inner wall of the testing instrument body, an adjusting assembly is installed on the top of the partition plate, and the adjusting assembly comprises a driving motor. The output end of the driving motor is fixedly connected with a rotating rod, and the surface of the rotating rod is fixedly connected with a fixed rotating disc. According to the moisture permeable cup fixing device, the adjusting assembly is arranged, the driving motor is used for driving the rotating rod to rotate, then the fixed rotating disc, the opening sleeve and the mounting table rotate synchronously, moisture permeable cups of different sizes can be stably fixed through cooperation with the synergistic effect of the threaded rod, the threaded sleeve, the limiting plate, the limiting sleeve and the arc-shaped plate, and it is ensured that the moisture permeable cups are tightly attached to the opening sleeve; therefore, the tester is suitable for testing the moisture permeation amount of moisture permeation cups of various specifications, and the universality and the application range of the tester are improved.

The invention relates to an equal-water-level moisture-permeable cup device capable of accurately quantifying moisture evaporation fraction and a measuring method thereof. The equal-water-level moisture-permeable cup device comprises a moisture evaporation system, a moisture fraction metering system and an automatic water supply system, the moisture evaporation system comprises a moisture permeable cup and a water storage bottle, and the moisture permeable cup is connected with the water storage bottle through a U-shaped pipe; the water content metering system comprises a liquid level sensor for monitoring the height of the liquid level in the water storage bottle in real time, and an acquisition card for converting the liquid level variable quantity into an electric signal; the automatic water supply system comprises a water supply tank, a guide pipe, a clamping mechanism and a relay. Weight errors caused by condensation / moisture absorption or long time intervals in a traditional weighing method are eliminated, the total water supplementing amount can be calculated in a high-precision mode by monitoring the descending volume of the liquid level in the water tank or the reduced reading weight of the electronic balance, then the evaporation amount is reversely deduced, the water vapor permeability is calculated, and the water vapor permeability is calculated. The accuracy of a water vapor permeability result is ensured, and the moisture permeability of the textile material is accurately evaluated.

The invention discloses a refractory mortar sheet-shaped prefabricated body as well as a preparation method and a construction method thereof, and belongs to the technical field of refractory mortar. The refractory mortar flaky preform is prepared from the following raw materials: 70 to 80 percent of porous bauxite clinker, 5 to 10 percent of quartz powder, 5 to 10 percent of silica powder, 0.5 to 1.0 percent of isothiazolinone derivative, 3 to 6 percent of passivated aluminum powder, 0.1 to 0.3 percent of tricalcium aluminate and 3 to 5 percent of yellow dextrin. 10-15% of a polyvinyl alcohol solution is added; the mass ratio of polyvinyl alcohol to water in the polyvinyl alcohol solution is 1: (18-20); the preparation method comprises the following steps: uniformly mixing the raw materials, pressing into slices and curing. The refractory mortar sheet-shaped prefabricated body has a rich microporous structure, has heat insulation property and moisture permeability, also has good forming strength and good plasticity and high-temperature performance after wetting, realizes a construction mode of on-site unpacking and ready-to-use, greatly improves the construction efficiency, and is suitable for high-efficiency masonry of industrial kiln masonry.