81results about How to "Improve bonding fastness" patented technology

The invention discloses a double-85-resistant long carbon chain nylon material as well as a preparation method and application thereof. The double-85-resistant long carbon chain nylon material is prepared from the following components in percentage by mass: 5-12% of a compatilizer, 3-10% of epoxy resin, 3-10% of a nylon hot melt adhesive, 1-3% of a coloring agent, 0.2-1% of an antioxidant, 0.2-0.7% of a lubricant, 0.2-0.5% of a heat stabilizer and the balance of polyamide resin. Through the innovative material and process design, the bonding strength of the bonding layer between the long-chain nylon and the thermoplastic elastomer (TPE) can be remarkably improved, and it is ensured that the key connecting part can still maintain the excellent bonding performance without failure even though the key connecting part is subjected to long-term high-temperature, high-humidity and other extreme environments.

The invention discloses a double-phase high-temperature damping alloy material as well as a manufacturing method and application thereof. The main components of an alloy comprise manganese, copper, nickel, iron, zinc, aluminum and chromium. The preparation method of the high-temperature manganese-based damping alloy material comprises the steps of mother alloy cast ingot preparation, alloy processing and alloy aftertreatment. According to the high-temperature manganese-based damping alloy, the mixing entropy is larger than 1.5 R, and the valence electron concentration is 5.9 < = VEClt; compared with a single-phase fcc structure in the prior art, the high-entropy manganese-based alloy has the advantages that the high-entropy manganese-based alloy is of an fcc and bcc double-phase structure, the interfacial effect caused by double phases can be brought into full play, and the damping performance of the alloy at the high temperature is effectively improved, so that the high-entropy manganese-based alloy has stable high damping performance within the high-temperature range of 400-800 DEG C; the method can be applied to vibration noise control under high-temperature and oxidation environment conditions. The damping alloy is simple in manufacturing process and low in manufacturing cost.

The invention provides an acid and alkali resistant metallic yarn preparation method, which comprises: 1, mixing polyvinylidene fluoride, polyvinylpyrrolidone and a solvent, and carrying out electrostatic spinning to form a PVDF / PVP composite fiber membrane; soaking the PVDF / PVP composite fiber membrane in an aqueous solution, taking out the PVDF / PVP composite fiber membrane after soaking, cleaning and drying to obtain a PVDF fiber membrane with a groove structure; step 2, soaking the PVDF fiber membrane with the groove structure in slurry containing flaky aluminum powder, a cross-linking agent and polyacrylate emulsion, and after soaking is completed, sequentially carrying out rolling and high-temperature drying to obtain a PVDF fiber membrane with an aluminum coating; 3, the PVDF fiber membrane with the aluminum coating is cut into filaments, then a polyester yarn coating layer and a protective coating are sequentially formed on the surface of the PVDF fiber membrane cut into the filaments, and the acid and alkali resistant metallic yarn is obtained. According to the method, the binding strength of the aluminum coating and the fiber membrane is improved, full coating of the aluminum wires is achieved, and the acid and alkali resistance of the metallic yarn fabric in the subsequent dyeing and finishing process is remarkably improved.

The invention relates to the technical field of phase-change microcapsules and functional fibers, in particular to a polyurethane-coated phase-change microcapsule, a temperature-adjusting fiber and a preparation method of the polyurethane-coated phase-change microcapsule. The polyurethane-coated phase-change microcapsule takes a phase-change material as a core material and cross-linked polyurethane as a shell material; the temperature-regulating fiber is obtained by mixing the phase-change microcapsule into a spandex stock solution or a TPU solution and spinning. The cross-linked polyurethane is used as a shell material of the phase change microcapsule, the defects that traditional linear polyurethane is poor in thermal stability and structural compactness are overcome, and the prepared phase change microcapsule has excellent mechanical performance, solvent resistance, weather resistance, biocompatibility and the like. The temperature-adjusting fiber has the advantages of excellent washing resistance and good fiber hand feeling, and the material property of the polyurethane shell material of the microcapsule has good compatibility with the fiber, so that the binding strength can be greatly improved, and the defects of poor thermal stability and poor framework compactness of the phase-change microcapsule are overcome; and the biocompatibility and the bonding strength of the phase change microcapsule and the fiber are improved.

The invention relates to a wool outdoor fabric based on a military uniform material and a preparation method of the wool outdoor fabric, and relates to the technical field of fabrics, the wool outdoor fabric is prepared by the following steps of: firstly, weaving blended yarns which are obtained by blending Coodola color master batch yarns and wool yarns and are used as warp and weft yarns to obtain base cloth; and directly adhering the bio-based TPU serving as a raw material to the surface of one side of the base cloth through electrostatic spinning in a mode of adding a functional additive, wherein the codolar color master batch yarn is obtained by carrying out melt blending, spinning and drafting on nylon 6, 6 fiber slices and color master batches. According to the fabric, the CORDURA material commonly applied to the field of military uniform manufacturing is blended with the wool yarn, the defects of natural material wool can be remarkably overcome, meanwhile, the excellent performance of the wool material is fully played, the fabric is excellent in wear resistance and air and moisture permeability, outdoor wearing comfort and experience can be improved, and the application prospect is good.

The invention belongs to the technical field of textiles, and particularly relates to lyocell fiber covering yarn lining cloth and a manufacturing method thereof. The lyocell fiber core-spun yarn lining cloth is formed by weaving lyocell short fiber yarn wrapped with low-melting-point chemical fiber filaments, the core yarn is 100% lyocell short fiber yarn with 10-80 English counts, the lyocell short fiber yarn is wrapped with 30-200 D low-melting-point chemical fiber filaments, the melting point of the low-melting-point chemical fiber filaments ranges from 110 DEG C to 180 DEG C, the types of the low-melting-point chemical fiber filaments comprise a single-component full-melting type or a double-component skin-core type, and the low-melting-point chemical fiber filaments are made of polyester fibers. The lining cloth weave is woven fabric, knitted fabric and the like. The lyocell fiber covering yarn lining cloth does not need to be coated with glue, is soft in hand feeling, does not contain formaldehyde, can be tightly attached to a garment material only through high-temperature hot pressing in the using process, can keep the lining part flat, is not prone to wrinkling and falling off, and is suitable for being used as various garment accessories.

The invention relates to the technical field of conductive heating materials, and discloses a carrier for improving the conductive heating performance of carbon nanotubes and a preparation method thereof.The carrier comprises a base material layer, a modified nanometer aluminum oxide / water-soluble polymer resin carrier layer and a carbon nanotube layer; the modified nano aluminum oxide / water-soluble polymer resin carrier layer comprises modified aluminum oxide; one or more modified groups of gamma-aminopropyltriethoxysilane, gamma-glycidyl ether oxypropyltrimethoxysilane, gamma-methacryloxypropyltrimethoxysilane, ammonium polyacrylate, sodium vinyl sulfonate, aminobenzoic acid and diallyldimethylammonium chloride are grafted on the surface of the modified aluminum oxide, and one or more modified groups of the gamma-aminopropyltriethoxysilane, the gamma-glycidyl ether oxypropyltrimethoxysilane, the gamma-methacryloxypropyltrimethoxysilane, the ammonium polyacrylate, the sodium vinyl sulfonate, the aminobenzoic acid and the diallyldimethylammonium chloride are grafted on the surface of the modified aluminum oxide. The modified nano aluminum oxide / water-soluble polymer resin carrier layer further comprises a dispersing agent; the dispersing agent is adsorbed into the modified aluminum oxide. The material obtained in the invention has good conductive heating capability.

The invention discloses a method for improving the bonding fastness of an aramid fiber rope, which comprises the following steps: S1, after secondarily twisted aramid fiber passes through a first drafting unit by a yarn storage frame, dipping the aramid fiber in a bath glue solution, and then passing through a drying oven H1 of 100-130 DEG C; s2, after coming out of the drying oven H1, sequentially passing through a second drafting unit, two-bath glue solution dipping and a drying oven H2 with the temperature of 180-200 DEG C; and S3, after being discharged from the drying oven H2, sequentially passing through a drying oven H3 at the temperature of 200-240 DEG C, a fourth drafting unit, three-bath glue dipping, a drying oven H4 at the temperature of 120-180 DEG C and a fifth drafting unit, and finally entering a winding machine. Through the multi-step and multi-factor synergistic treatment method, the bonding fastness of the aramid fiber rope and the rubber is successfully improved, and remarkable effects are achieved in the aspects of adhesive force, glue scraping and the like.

The invention provides a fireproof high-pressure hydrogen storage cylinder and a preparation method thereof, and relates to the technical field of hydrogen storage cylinders. The hydrogen storage cylinder comprises a plastic inner container, and a carbon fiber winding layer, a resin isolation layer and a fire-resistant fiber winding layer which are sequentially arranged on the outer side of the plastic inner container. According to the hydrogen storage cylinder, the carbon fiber winding layer, the resin isolation layer and the fire-resistant fiber winding layer are reasonably arranged on the outer side of the plastic inner container, the problem that an existing plastic inner container full-winding composite material gas cylinder is poor in use safety is solved, and the obtained hydrogen storage cylinder has good fire resistance and heat insulation performance and air tightness and is excellent in weather resistance and fatigue resistance.

The invention discloses high-gram-weight transfer paper, and relates to the technical field of aluminized transfer paper. The high-gram-weight transfer paper comprises a bottom paper layer, a laser transfer film and an adhesive layer bonded between the bottom paper layer and the laser transfer film, the adhesive layer adopts a double-component polyurethane adhesive, and the double-component polyurethane adhesive comprises a component A and a component B; the component A comprises the following raw material components: castor oil and a diisocyanate monomer; the component B is prepared from the following raw material components: polyether polyol, polyepichlorohydrin, a diisocyanate monomer, fumed silica, trimethylolpropane and N-(2-aminoethyl)-3-aminopropyltrimethoxysilane; the high-gram-weight transfer paper disclosed by the invention is relatively good in folding resistance and scratch resistance, and the adhesion fastness of the laser transfer film on the bottom paper layer is relatively good.

The application discloses synthetic leather composite silica gel humanoid robot simulation skin and a preparation method and application thereof, and belongs to the humanoid robot surface material application field. The skin comprises, from outside to inside, a synthetic leather layer with bionic texture, a water-based polyurethane interface layer with a thickness of 0.03-0.06 mm, and a silica gel layer. The water-based polyurethane interface layer is composed of a water-based polyurethane-silicone block copolymer with a hydroxyethyl acrylate end cap and a side chain containing a vinyl group. In the preparation, the water-based polyurethane interface layer is first formed on the back of the synthetic leather, then a platinum gold catalyst is sprayed on the interface and a mold, and finally the addition type liquid silica gel containing a silicon hydrogen bond is compounded in the mold and is cured at 24-26 DEG C and 40%-60% humidity. Peeling damage is realized to occur in the silica gel body; meanwhile, the interface layer and the synthetic leather cooperatively constitute a double barrier, so that the silicon oil exosmosis is avoided. The product has strong comprehensive advantages, and the process is environment-friendly and low in cost.

The invention discloses a continuous flexible conductive material preparation device and method.The device comprises a continuous flexible material, a guide roller and a conductive coating assembly, the assembly is sequentially provided with a tackifying unit, a powdering unit, a curing unit, a chemical plating unit and a post-processing unit in the material conveying direction, the center lines of conveying channels of all the units are collinear, and the interface gap is smaller than or equal to 2 mm. The micro-nano metal powder seed source is planted through the powdering device, rapid growth and closing of the micro-nano metal powder seed source are achieved through chemical plating after solidification, a compact conductive network is constructed, and a finished product is obtained.The short-process, rapid, efficient and environment-friendly preparation of the continuous flexible high-conductivity material can be achieved, the prepared material is low in cost, good in conductivity and high in durability, material transmission deviation is avoided, and the continuous flexible high-conductivity material can be obtained. The method improves the compactness of the coating and the consistency of products, recovers redundant adhesion liquid and catalyst particles, reduces the production cost, and is suitable for preparation of continuous flexible conductive materials such as conductive yarns, fabrics and films.

The invention discloses a water-resistant and oil-resistant paper-based coating, a preparation method and a water-resistant and oil-resistant paper product, and belongs to the technical field of paper-based packaging materials. Hydrophobic modification is achieved through the esterification reaction of stearic acid and the chemi-mechanical pulp CNF, meanwhile, high-pressure homogenization treatment is combined, it is ensured that the hydrophobic chemi-mechanical pulp CNF is evenly dispersed, and the hydrophilic problem of the CNF is fundamentally solved; meanwhile, the prepared oil-proof agent takes soy isolate protein as a substrate, sodium-based montmorillonite is matched to form a synergistic oil-proof system, and a hydrophobic chemithermomechanical pulp CNF dispersion liquid and an oil-proof agent dispersion liquid are used for constructing a coating on the surface of a paper base, so that the coating has excellent water resistance and oil resistance at the same time. The coating prepared by the invention has good compatibility with a paper-based material, and subsequent paper can be degraded along with the paper-based material after being discarded, so that the problem of white pollution caused by a polyethylene spraying film is thoroughly abandoned; the chemical-mechanical pulp CNF raw material has the green property of being degradable and renewable, so that the green, environment-friendly, safe and sustainable coating system is realized.

The invention provides a double-layer pressure-bearing pipe and a preparation method thereof, and belongs to the technical field of pipes, and the preparation method comprises the following steps: carrying out infiltration surface treatment on continuous glass fiber bundles and pretreated basalt fibers in a composite coupling agent ethanol solution, carrying out vacuum drying, uniformly mixing with molten high-density polyethylene, and pressing into a glass fiber / basalt fiber composite belt; the preparation method comprises the following steps: mixing and stirring molten-state high-density polyethylene and modified hollow glass microspheres to prepare an HGM / HDPE composite material, extruding to prepare an inner-layer pipe blank, winding a glass fiber / basalt fiber composite belt on the inner-layer pipe blank, and compounding at 380-400 DEG C to prepare a composite inner-layer pipe; preheated epoxy resin and other auxiliaries are mixed and stirred, the amination-modified SiO2 / CeO2 composite filler is added, high-speed stirring and uniform mixing are performed, the mixture is sprayed to the outer surface of the composite inner layer pipe to form an outer protection layer, high-temperature curing is performed, and the double-layer pressure-bearing pipe is prepared. The bearing strength can be improved, and meanwhile durability and corrosion resistance are achieved.

The invention discloses a papermaking dry strength agent preparation method, which comprises: S1, dissolving chitosan in an acidic aqueous solution to form a chitosan glue solution, and removing oxygen; s2, dropwise adding a high-concentration acrylamide solution, a water-phase monomer mixed solution and an initiator solution for graft copolymerization to obtain a branched prepolymer; s3, a cross-linking agent is added for a cross-linking reaction, and a micro-cross-linked structure is formed; primary amino groups on a chitosan chain are terminated, and branched amphoteric chitosan-polyacrylamide dry strength agent mother liquor is obtained; s4, carrying out composite dispersion on the composite material and a nanocellulose material, and diluting to obtain a diluent; and S5, after a paper machine slushing pump and before a pressurized screen, firstly adding an anionic garbage capturing agent for pre-flocculation, then continuously feeding the diluent, and stirring to obtain the product. According to the papermaking dry strength agent prepared by the preparation method disclosed by the invention, the interface bonding strength of the papermaking dry strength agent to fibers and the adaptability and use efficiency of the papermaking dry strength agent in a complex wet end environment are remarkably improved, and the requirements of the modern papermaking industry on high-performance and high-stability dry strength agents can be met.

The invention provides a knitted fabric treatment method, and belongs to the technical field of textile treatment. The method comprises the following steps of: soaking the knitted fabric in a pretreatment solution at the temperature of 50-60 DEG C for 30-60 minutes under the condition that the bath ratio is controlled to be 1: 20-30, placing the pretreated knitted fabric in a dyeing solution at the bath ratio of 1: 20-30, the concentration of a vegetable dye in the dyeing solution is 5-10% owf, the dyeing temperature is 50-60 DEG C and the dyeing time is 60-90 minutes, and finishing dip dyeing, wherein the concentration of a modifier in the pretreatment solution is 5-10% owf, the concentration of the vegetable dye in the dyeing solution is 5-10% owf, the dyeing temperature is 50-60 DEG C and the dyeing time is 60-90 minutes. Green dyeing with high dyeing rate and good color fastness of the knitted fabric is realized.

The application relates to the technical field of hoisting belts, and provides a flexible bearing material for a fatigue-resistant high-strength hoisting tool and a preparation method thereof. The material takes UHMWPE fibers or aramid fibers as a substrate, is activated by low-temperature oxygen plasma, is sequentially subjected to glycidyl methacrylate grafting to introduce epoxy sites, end-amino hyperbranched PAMAM chain extension to construct a multistage active interface, is subjected to a silane coupling agent containing a benzotriazole group to construct a weather-resistant layer, is then loaded with a negative nano-titanium dioxide and polyethylene imine composite system, and is finally crosslinked and solidified by ethylene glycol diglycidyl ether. The application strengthens the interface bonding force through a multistage covalent bonding surface modification structure, simultaneously improves the fatigue resistance, weather resistance and wear resistance of the material, and solves the problems of weak interface bonding of existing hoisting bearing materials, easy wear and aging in cyclic service, and short fatigue life.

The application relates to the technical field of medical textile materials, and discloses an antibacterial and breathable medical gauze sheet, which comprises a base material and an antibacterial functional layer loaded on the base material, and the functional layer is formed by chemical reaction of carboxymethyl chitosan, tannic acid, boric acid, citric acid and zinc ions. Through boric acid complexation and citric acid competitive coordination, a double interpenetrating network structure of covalent bonds and coordination bonds is formed inside and outside the gauze fibers. The structure effectively inhibits the oxidative browning of tannic acid and eliminates the difference in the skin-core distribution of the functional components. The obtained gauze sheet is not only high in whiteness and good in breathability, but also has excellent washing fastness and long-acting and broad-spectrum antibacterial performance.

The invention relates to the technical field of silica gel, in particular to velvet silk-screen silica gel as well as a preparation method and application thereof. The velvet silk-screen silica gel comprises a component A and a component B, wherein the weight ratio of the component A to the component B is 100: (2-5); each part of the component A comprises the following raw materials in parts by weight: 50-70 parts of vinyl matt finish base rubber, 10-15 parts of velvet powder and 5-10 parts of a cross-linking agent; and each part of the component B comprises the following raw materials in parts by weight: 70-80 parts of vinyl silicone oil, 10-12 parts of a platinum catalyst and 0.2-0.5 part of a silane coupling agent. The velvet silk-screen silica gel is good in velvet effect after being printed, has good washing resistance and dry and wet rubbing resistance, is not prone to the situation of velvet splashing in the silk-screen process, and facilitates reduction of dust pollution. The preparation method of the velvet silk-screen silica gel is simple in process, convenient to operate and control, high in production efficiency and beneficial to industrial production.

The present invention is a method for preparing a hierarchical polypyrrole / NiCoAl‑LDH / cotton fiber flexible electrode material, which overcomes the problem of how to give cotton fiber conductivity and capacitance properties in the prior art. The present invention comprises the following steps: first, a cobalt-based metal organic framework (ZIF‑67) is grown in situ on a biomass cotton fiber substrate, and then it is used as a self-sacrificial template, and a nickel cobalt aluminum hydroxide (NiCoAl‑LDH) nanoarray is derived by introducing nickel nitrate hexahydrate and aluminum nitrate nonahydrate; and then pyrrole is introduced as a raw material, FeCl3·6H2O is an oxidant, and chemical oxidation polymerization is performed on NiCoAl‑LDH / cotton fiber, and polypyrrole is grown on the NiCoAl‑LDH nanoarray to form a hierarchical structure, and a polypyrrole / NiCoAl‑LDH / cotton fiber electrode material is obtained. The present invention designs and synthesizes a NiCoAl‑LDH array with a rich pore structure on a cotton fiber substrate, provides a phase change space for the polypyrrole molecular chain in the electrode material, and prevents it from being dedoped during the charge and discharge process, resulting in attenuation of electrochemical performance.

The invention discloses a PVA water-soluble film with a color fixing function and a preparation method and application thereof.Firstly, a green color fixing agent P (DMDAAC-AGE) which is high in performance and wide in applicability is prepared, the problem that a traditional color fixing agent is poor in color fastness is solved, water-soluble PVA serves as a carrier, hydroxyl in a PVA molecular chain can react with the color fixing agent, and the color fastness of the color fixing agent is improved; the water-soluble film can be further combined with dye molecules, the binding strength between the dye molecules and the color fixing agent is improved under multiple reactions, meanwhile, after the water-soluble film is dissolved, the film is immediately formed on the surface of the fabric, the defect that the coating performance of the allyl quaternary ammonium salt derivative polymer color fixing agent on the dye is insufficient is overcome, colored fine fibers are inhibited from being rubbed down, and the color fixing effect is improved. And a new idea is provided for manufacturing the high-efficiency color-fixed Miao embroidery lining cloth, and the method has important theoretical significance and practical application value.

The utility model relates to the technical field of building materials, in particular to a hollow fly-ash brick which comprises a fly-ash brick body, through holes are formed in the middles of the upper wall and the lower wall in the fly-ash brick body, clamping blocks are arranged on the left side and the right side of the fly-ash brick body, and butt joint grooves are formed in the left wall and the right wall of the fly-ash brick body. A second direction adjusting groove is formed in the front wall of the fly ash brick body, a first direction adjusting inserting groove is formed in the rear wall of the fly ash brick body, the butt-joint holes are formed in the four corners of the interior of the fly ash brick body, and butt-joint limiting assemblies are arranged in the butt-joint holes. According to the utility model, the clamping blocks are fixed in the butt-joint groove, the direction adjusting slot I and the direction adjusting slot II in different positions and different connection directions, all directions can be connected and fixed, the connection stability is improved, the butt-joint limiting assemblies on the inner sides of the upper and lower adjacent units are mutually inserted and fixed in a limiting manner, and the internal barrier is matched with mortar bonding, so that the connection stability is improved. And mortar in the anti-skid grooves is stacked and connected, so that the bonding firmness is further improved.

The invention belongs to the technical field of graphene, and particularly relates to a graphene oxide and resistance wire compounded flexible heating pad. The resistance wire is used as a main heating body to provide a basic heat source, and meanwhile, an efficient three-dimensional heat conduction network is constructed through the graphene modified layer. The network not only can quickly and uniformly disperse heat generated by the resistance wire, but also can convert part of heat energy into far infrared radiation with the wavelength of 6-14 microns. By means of the composite heat transfer mode, the overall electric-heat conversion efficiency is greatly improved, reaches 95% or above and is far better than that of a traditional resistance wire heating pad (60-70%), and electric energy is effectively saved.

This invention discloses a recoatable ceramic coating, its preparation method, and its application in honeycomb non-stick cookware. The primer, calculated at 100%, contains: 20-22% silica sol, 3-4% 1% NaOH solution, 10-12% pigment, 8-10% filler, 1-1.5% dispersant, 18-20% methyltrimethoxysilane, 2-4% KH560, 8-10% PAI, 3-5% isopropanol, 3-5% acetic acid, and 1-2% leveling agent. The topcoat, calculated at 100%, contains: 30-35% silica sol, 25-30% methyltrimethoxysilane, 3-5% KH560, 8-10% PAI, 3-5% isopropanol, 3-5% acetic acid, 2-4% leveling agent, and 2-4% non-stick additive; the balance is water. This invention solves the problems of recoating the cured ceramic coating, interlayer adhesion, and adhesion strength between the coating and raised metal parts while maintaining the honeycomb non-stick cookware manufacturing process.

This invention provides an antistatic fabric based on modified acrylic fiber and its preparation process, belonging to the field of textile fabric technology. The process includes the following steps: first, preparing modified acrylic fiber and organosilicon quaternary ammonium salt modified CNW; then, mixing and stirring the modified acrylic fiber, DMF, and organosilicon quaternary ammonium salt modified CNW to obtain a spinning solution; mixing anhydrous ethanol and organosilicon quaternary ammonium salt modified CNW, and ultrasonically treating to obtain a dispersion; in a conjugate electrospinning device, feeding the spinning solution and dispersion into two sets of needles respectively, and electrospinning the spinning solution to form nanofibers under the action of a high-voltage electric field; feeding cotton yarn into the electric field region, causing the nanofibers to spirally wind around the surface of the cotton yarn and form a coating shell; and electrostatically spraying the dispersion to deposit the organosilicon quaternary ammonium salt modified CNW onto the surface of the coating shell; collecting and winding to obtain a fiber core-spun yarn, and weaving the fiber core-spun yarn to obtain the antistatic fabric. This invention can improve the antistatic performance of the fabric while also possessing certain antibacterial properties.

The application discloses an ultra-thin woven pile electronic package material fabric and a preparation method thereof. The fabric is interwoven by warp yarn, weft yarn and terry yarn through satin weave, the thickness of the fabric is 0.20-0.25 mm, the fabric surface has pile formed by the terry yarn after sanding, the height of the pile is 0.05-0.10 mm, and the pile height H and the fabric thickness T satisfy H / T<=0.5. The warp yarn and the weft yarn are high-shrinkage polyester, the terry yarn is low-shrinkage polyester, and the root of the terry yarn is clamped and fixed by the warp yarn and the weft yarn in the shrinkage state. The application realizes accurate control and firm anchoring of the pile under the thickness of 0.20-0.25 mm through the cooperation of the satin weave and the high-shrinkage warp yarn and weft yarn, so that the woven pile fabric has the performances of ultra-thin, soft, size stability and non-falling of the cut edge, and the problems of the existing ultra-thin pile fabric, i.e. the pile penetrating the fabric or easily falling off, are solved.

The invention belongs to the technical field of pet supplies, and particularly relates to a color-changeable urinal pad for pets and a preparation method thereof.The color-changeable urinal pad sequentially comprises a non-woven fabric layer, a quick-absorption layer and a leakage-proof layer from top to bottom; wherein the non-woven fabric layer contains core-shell structure microspheres, a shell layer is made of low-melting-point polyester, a core layer is made of a porous water absorption material, anthocyanin is adsorbed on the core layer, and the non-woven fabric layer and the quick absorption layer are bonded through hot pressing. Color response can be carried out on different pH values of pet urine, then the health condition of a pet is judged, meanwhile, the bonding fastness is improved through low-melting-point polyester, dissolution loss of anthocyanin can be prevented through shell layer hydrophobicity and core layer hydrophilicity structure setting, and therefore the color response stability is improved; moreover, the core-shell structure microspheres are arranged in the non-woven fabric layer, so that color change can be seen from the surface layer in time, and judgment delay caused by blocking of color change is prevented.

The invention discloses a preparation method of colored suede leather base cloth, which comprises the following steps of: blending, melting and spinning by taking PA (Polyamide) slices as island phases and PE (Polyethylene) slices as sea phases to obtain sea-island fibers, needling to form non-woven fabrics, and shaping at high temperature to obtain the base cloth; preparing colored slurry containing a bridging agent and a curing agent, performing dry coating on release paper to form a coating, then laminating the coating with the shaped base cloth, and separating the release paper after drying to obtain composite coating base cloth with a colored surface layer; carrying out wet-process impregnation on the back surface of the composite coating base cloth by adopting impregnation slurry without adding color paste to form a double-layer structure; and splitting, drying, dyeing, buffing, oiling and fixing to obtain the colored suede leather base cloth. According to the preparation method of the colored suede leather base cloth provided by the invention, a product with bright color and high color fastness is prepared by optimizing a production process.

The invention relates to the technical field of concrete, and in particular to a self-compacting concrete using waste slag as a raw material and a preparation method thereof. The self-compacting concrete comprises the following raw materials in parts by weight: 100 parts of silicate cement, 115-145 parts of modified waste slag, 65-85 parts of river sand, 230-260 parts of crushed stone, 2.6-3.7 parts of lanthanum oxide / carbon composite material, 1.2-1.5 parts of mullite fiber, 2.3-4.2 parts of EVA emulsion, 3-6 parts of silica fume, 0.3-0.6 parts of water reducer and 45-53 parts of water. The concrete prepared by the invention has high strength and high toughness, good corrosion resistance, strong construction performance and excellent comprehensive performance when a large amount of waste slag is used as a raw material.

The present application relates to a highly water-resistant single-component strong penetrating paste-like tile adhesive and a preparation process thereof. The tile adhesive comprises at least the following components by mass: 100-200 parts of adhesive emulsion; 650-850 parts of inorganic filler; 50-150 parts of water; 3-15 parts of thickener; wherein the inorganic filler comprises a coarse filler and a fine filler, the coarse filler comprises coarse inorganic particles with a particle size of 250-800 μm and a coarse regenerated cellulose layer coated on the coarse inorganic particles, the fine filler comprises fine inorganic particles with a particle size of 100-150 μm and a fine regenerated cellulose layer coated on the fine inorganic particles, and the coarse regenerated cellulose layer and the fine regenerated cellulose layer are both distributed with hygroscopic pores. The present application has the effect of achieving both good initial adhesion and good bonding performance in a hot and humid environment.