119 results about "Reticular fiber" patented technology

The invention discloses a preparation method of a graphene/bacterial cellulose composite material. Bacterial cellulose and graphene are co-cultured in situ to obtain the graphene/bacterial cellulose composite material, wherein the graphene evenly grows in the bacterial cellulose reticular fiber structure. The preparation method comprises the following steps: 1) preparing a bacterial cellulose culture fluid, and sterilizing at high temperature under high pressure for 30-60 minutes; 2) inoculating the strain in the bacterial cellulose culture fluid, and rocking in a rocker for 12-48 hours; 3) carrying out ultrasonic treatment on a 0.2mg/ml graphene dispersion liquid for 1-3 hours, and adding the graphene dispersion liquid into the bacterial cellulose culture fluid with the strain, wherein the volume ratio of the graphene dispersion liquid to the bacterial cellulose culture fluid is 1:5-1:10; 4) rocking the mixed liquid in the rocker for 12-24 hours; 5) putting the liquid in a 28 DEG C thermostatic oven, and standing for 1-2 weeks to obtain the graphene/bacterial cellulose composite material; and 6) cleaning the graphene/bacterial cellulose composite material, and carrying out freeze-drying. In the composite material, the graphene is evenly distributed on the bacterial cellulose fibers, thereby effectively inhibiting the defect of high agglomeration tendency of graphene particles.

The invention discloses a composite elastic material screen cloth which comprises a warp-knitted three-dimensional fabric formed by a top layer, a bottom layer and a connecting layer for connecting the top layer with the bottom layer, wherein a cavity is surrounded by the top layer, the bottom layer and the connecting later, the cavity is internally filled with a composite material capable of being solidified, the connecting layer consists of a plurality of layers of reticular fiber fabrics which are distributed in parallel with one another along the length direction of the screen cloth, each layer of the reticular fiber fabrics is formed by a plurality of alternately woven wave-shaped fibers, each wave peak of each wave-shaped fiber is fixedly connected with a first node, the first nodes fixedly connected with the wave peaks on the wave-shaped fibers are arranged on the same straight line, and 1-5 node(s) arranged between the adjacent two wave peaks of the wave-shaped fibers is/are available. The composite elastic material screen cloth has the advantages that the composite elastic material screen cloth is convenient to use, and convenient to disassemble and transport by workers, and the special material in a reticular composite concrete layer with certain thickness and certain hardness can be formed only by irrigating liquids, such as water, when the screen cloth is used; and the screen cloth is good in comprehensive performance, flexible to use, low in cost, convenient to construct, and high in efficiency, and is environment-friendly.

The invention relates to environment protection material. Natural multi-purpose environmental protection material with functions of moisturizing, dust prevention, heat preservation and weed eradication is characterized in that the material is made from raw materials of plant material powder, filling material, reticular fiber, foaming agent, binding agent, humectant and vegetable oil, and prepared into s block shape; The occupying mass percent of the raw materials is as follows: 50-65 percent of plant material powder, 10-15 percent of reticular fiber, 5-10 percent of foaming agent, 5-10 percent of binding agent, 5-10 percent of humectant, and 0.5-1 percent of vegetable oil; the plant material powder is admixture of one or two of straw, caving, leaf, tree branch, bark, bamboo, vine, bulrush, aquatic grass, pygmy water lily, water fern, nuphar pumilum, singharanut, lotus flower, loosestrife, common snapdragon, waterweed and hydrilla verticillata which are smashed into powder, and when the plant material powder is admixture of more than any two, the compounding ratio is the non critical ratio; the filling material adopts pulverized fuel ash and clay. The invention has the advantages of low cost, moisturizing, dust prevention, and weed eradication.

The invention relates to a high-efficiency low-resistance nano anti-virus mask and a production method thereof. The nano anti-virus mask comprises a filtering material and is characterized in that the filtering material comprises a base material and a static net spraying film. The production method of the nano anti-virus mask is characterized by comprising the following steps of: dissolving a polymer, adding an inorganic salt, and stirring the mixture to form a uniform spinning solution; and carrying out static net spraying on the obtained spinning solution, depositing the static net spraying film containing two-dimensional reticular fiber and one-dimensional electrospun fiber on a receiving device with the base material attached to obtain a composite structure of the base material and the static net spraying film, and preparing the composite structure into the nano anti-virus mask. The nano anti-virus mask has high virus filtering efficiency and small respiratory resistance.

The invention relates to a method of recovering and reconstructing vegetation of mining land, which comprises the following steps: clearing float stones and flattening broken stones; laying reticular fiber ecological mats along the slope; and punching holes on the laid ecological mats, mixing and uniformly stirring grass seeds, shrub seeds and loam soil, sowing the mixture into the holes, and then covering the holes by sun-shading nets. The invention can protect water and soil, i.e. prevent soil which is artificially covered on the slope of the broken stones from losing by covering the reticular fiber ecological mats, balance temperature, improve efficiency and prevent sand and dust from blowing.

The invention discloses a low elastic modulus fiber-enhanced recycled concrete preparation method. The method is characterized in that crushed waste concrete is used as a portion of coarse aggregate of concrete; and low elastic modulus fiber is doped in the recycled concrete to improve performance of the recycled concrete. The low elastic modulus fiber-enhanced recycled concrete contains, calculated by 100 weight parts per cubic meter concrete, 32.5R ordinary portland cement 20 to 21 parts, fine aggregate 18 to 20 parts, natural coarse aggregate 34 to 36 parts, recycled coarse aggregate 14 to26 parts, polypropylene three-branch anti-aging reticular fiber 0.03 to 0.05 parts, and water 8 to 10 parts. Based on the tension resistance, the polypropylene three-branch anti-aging reticular fibercan prevent the development of an interface initial defect crack between fresh mortar and fresh coarse aggregate in the concrete, and can remarkably improve the interface crack between fresh mortar and old mortar of the recycled concrete. The preparation method is simple, and the recycled concrete has reliable mechanical property and wide commercial application prospect.

The invention discloses a grouting material for expressway bridge bearings, which comprises the following components in parts by weight: 400-500 parts of cement, 300-450 parts of quartz sand, 10-20 parts of fly ash, 2-4 parts of a water reducing agent, 1-1.5 parts of a coagulation accelerator, 1-4 parts of an expander, 1-3 parts of a retarder, 2-3 parts of a defoamer, 2-5 parts of a thickener, and1-1.5 parts of polypropylene reticular fibers. The invention further discloses a preparation method of the grouting material for expressway bridge bearings. The cement uses in the grouting material adopts sulphoaluminate cement and ordinary portland cement, which not only realizes the characteristics of early strength, but also avoids the problem of strength substantial decline caused by the useof the ordinary portland cement alone. The raw materials of the grouting material have a wide range of sources and low price. The preparation method is simple, and suitable for large-scale promotion,and the grouting material has good construction performance, can realize self-flow leveling, has long operation time, and has a smooth surface after being poured, and the shortcomings of traditional mortar such as irregularity, easy cracking, easy stripping and easy dusting can be overcome.

The invention relates to a nylon wheel and a preparation method thereof. The nylon wheel comprises a nylon fiber silk screen (1) with a reticular fiber structure and a working layer (2) poured in the nylon fiber silk screen (1), wherein the working layer (2) is a mixture prepared from a high-hardness high-quality grinding material, a binding agent and a filling agent, and the weight proportion of the nylon fiber silk screen (1) to the mixture is 1:5-7. The method for preparing the nylon wheel comprises the following steps: 1) adding the high-hardness high-quality grinding material and the filling agent into the binding agent in an agitator tank in turn according to the sequence, stirring the mixture evenly under a condition of heating; 2) pouring the liquid mixture obtained in the step 1) into the nylon fiber silk screen, and performing an extrusion process so that the material is evenly distributed in the nylon fiber silk screen; and 3) according to the diameter and the thickness of the nylon wheel to be produced, performing laminating processing on the nylon fiber silk screen, cutting off and processing the nylon fiber silk screen into required shapes after standing, and performing hot working under a condition of heating to obtain the finished product. The nylon wheel has the advantages of low cost, long service life, capability of improving the surface finish quality of a workpiece, and high polishing efficiency. The method for preparing the nylon wheel has convenient manufacture and high production efficiency.

The invention relates to an impervious freezing-and-thawing-resistant concrete mix. The concrete mix comprises, by weight, 286 to 290 parts of Portland cement, 430 to 450 parts of fine sand, 250 to 270 parts of medium coarse sand, 1070 to 1080 parts of cobblestone, 28 to 32 parts of fly ash, 58 to 62 parts of mineral powder, 130 to 135 parts of water, 7.6 to 7.9 parts of a pumping agent, 0.9 to 1.8 parts of polypropylene reticular fibers and 24 to 26 parts of an air-entraining and water-reducing agent. According to the invention, aggregate grading is optimized, a sand rate and a water-cement ratio are controlled, and the superfine polypropylene reticular fibers are added, so organic combination of the superfine polypropylene reticular fibers with the fine sand is realized, bonding between the fine sand and other ingredients is improved, the problem of reduction in strength, impermeability, durability, crack resistance and workability during preparation of concrete from ultrafine sand is effectively overcome, and cost for engineering construction is substantially reduced; meanwhile, the air-entraining and water-reducing agent is used so as to improve the anti-permeability and freezing-and-thawing resistance of concrete.

The invention relates to a crack-resistant concrete mix. The concrete mix comprises, by weight, 286 to 290 parts of Portland cement, 430 to 450 parts of fine sand, 250 to 270 parts of medium coarse sand, 1070 to 1080 parts of cobblestone, 28 to 32 parts of fly ash, 58 to 62 parts of mineral powder, 130 to 135 parts of water, 7.6 to 7.9 parts of a pumping agent, 0.9 to 1.8 parts of polypropylene reticular fibers, 24 to 26 parts of an air-entraining and water-reducing agent, and 4.5 to 5 parts of a crack-resistant agent. According to the invention, aggregate grading is optimized, a sand rate and a water-cement ratio are controlled, and the superfine polypropylene reticular fibers are added, so organic combination of the superfine polypropylene reticular fibers with the fine sand is realized, bonding between the fine sand and other ingredients is improved, the problem of reduction in strength, impermeability, durability, crack resistance and workability during preparation of concrete from ultrafine sand is effectively overcome, and cost for engineering construction is substantially reduced; meanwhile, the air-entraining and water-reducing agent and the crack-resistant agent are used so as to improve the crack resistance and freezing-and-thawing resistance of concrete.

The invention relates to the preparation field of artificial nucleus pulposus, in particular to a preparation method of artificial fullerene-carried nucleus pulposus. According to the preparation method of the artificial fullerene-carried nucleus pulposus, a semi-molding design concept is adopted, the fullerene nucleus pulposus can be implanted into an affected part with low invasiveness, and surgery risks and postoperative shifting problems are reduced; by adding fullerene into the artificial nucleus pulposus, the content of free radials in the nucleus pulposus can be reduced, and the purposeof decelerating degeneration of the intervertebral disc is achieved. By designing the artificial nucleus pulposus into a structure with an inner layer containing xerogel and an outer layer provided with an electrostatic spinning membrane, on the one hand, a three-dimensional reticular fiber membrane of the outer layer can be utilized to wrap the xerogel of the inner layer without influencing hydration and expansion of the xerogel, shifting of the xerogel is also avoided, and the overflow risk is reduced; on the other hand, the mass of the filling xerogel and the diameter of the fiber membranecan be adjusted according to actual demands to achieve a better filling effect and better recover the structure of the intervertebral disc. Moreover, the artificial nucleus pulposus is a dry solid and is easy to preserve and long in storage life.

A mesh fiber member having a plurality of biodegradable fibers, the mesh fiber member being configured to induce modulated healing of damaged biological tissue when deployed proximate thereto. The strands comprise an extracellular matrix (ECM) composition or an ECM-mimicking biomaterial composition, such as poly(glycerol sebacate) (PGS), and can include a biodegradable ECM, polymeric or ECM-mimicking biomaterial composition coating.

The invention discloses a lightweight high-strength foam concrete composite insulation board. A foam concrete slab is used as a main board, a sandwich in the middle is rigid foam polyurethane, and the foam concrete slab comprises the following components in parts by weight: 20-35 parts of ordinary Portland cement, 2-4 parts of ultrafine fly ash, 4-10 parts of ultrafine mineral powder, 40-60 parts of broken stones, 50-70 parts of medium sand, 1-2 parts of tri-isopropanolamine, 0.5-2.5 parts of calcium oxide, 1-3 parts of polypropylene reticular fiber, 0.8-1.6 parts of an organic additive, 3-5 parts of an HTQ-1 type foaming agent, 1-2 parts of an MPS foam stabilizer, 1.5-3 parts of a polycarboxylate superplasticizer, and 15-30 parts of water, wherein the organic additive is prepared by virtue of a dropwise adding reaction of an anionic polymer, a soluble metal salt, and soluble alkali metal silicate. The foam concrete composite insulation board is good in thermal insulation property, good in impact resistance, high in toughness, high in compression strength and low in preparation cost, and is energy-saving and environment-friendly.

The invention discloses a method for preparing multielement assorted-fibred reinforced recycled concrete with low elasticity modulus. Cracked waste concrete is adopted as partially recycled coarse aggregate of the concrete; nylon fiber extracted from waste tyres, modified polypropylene coarse TANK fiber and polypropylene three-branched anti-aging reticular fiber are added to improve the mechanical property of the recycled concrete; in terms of 100 parts by weight, the concrete comprises 21 parts of 32.5R common portland cement, 20 parts of fine aggregate, 25-35 parts of natural macadam, 15-25parts of recycled coarse aggregate, 0.01-0.02 part of nylon fiber, 0.01-0.02 part of modified polypropylene coarse TANK fiber, 0.01-0.02 part of polypropylene three-branched anti-aging reticular fiber and 9 parts of water per cubic meter. The method is simple in preparation, solves the environmental problems caused by construction waste and black pollution and has wide economic and promotion values and social benefit.

A mesh fiber member having a plurality of biodegradable fibers, the mesh fiber member being configured to induce modulated healing of damaged biological tissue when deployed proximate thereto. The strands comprise an extracellular matrix (ECM) composition or an ECM-mimicking biomaterial composition, such as poly(glycerol sebacate) (PGS), and can include a biodegradable ECM, polymeric or ECM-mimicking biomaterial composition coating.

The invention provides an orange essential oil dust mask and a preparation method thereof. The preparation method comprises the following steps: soaking a melt-blown fabric with a reticular fiber structure in orange essential oil for 5-10 minutes, taking out the melt-blown fabric, and drying the melt-blown fabric to obtain orange essential oil filter cloth, respectively arranging two layers of non-woven fabrics above and below the orange essential oil filter cloth, clamping an orange essential oil filtering layer between the two layers of non-woven fabrics, and pressing a mask filtering layer by using a high temperature sealing machine, wherein pure cotton cloth is used on the surface, close to human skin, of the mask, the outermost layer of the mask is made of white cotton cloth, cotton print, cartoon polyester cloth or chiffon, the filtering layer is located in the middle, and the orange essential oil dust mask is prepared by adopting a conventional mask preparation process. The dust healthcare mask provided by the invention is harmless to human bodies, simple, simple in structure, high in breathability and good in dustproof effect, and the dust healthcare mask further has the functions of dispersing aroma, preventing dizziness and vomit, effectively relaxing and relieving pressure, relieving fatigue, and the like.

The invention discloses a cushion, which comprises an inner core. The inner core comprises a palm fiber layer and an emulsion layer combined on the outer surface of the palm fiber. The emulsion layer is subjected to sulfur treatment to be combined on the outer surface of the palm fiber layer. The inherent three-dimensional reticular fiber structure of the natural wild palm fibers is sufficiently used, and the natural emulsion has high elasticity, thus, the cushion has good ventilation property, prevents insect and germs, is neither too hard nor too soft, and has comfortable feeling for the human body.

The invention discloses an automotive filter for filtering PM2.5 air particles and a preparation method. The automotive filter is mainly used for filtering PM2.5 air particles in an automobile. A filtration material of the filter includes a base layer and an adsorption layer, wherein the base layer is made of a reticular fiber layer non-woven fabric base layer material formed by using a carding machine to comb short fibers, a reticular fiber layer is provided with an irregular surface, and the adsorption layer is formed by adopting an electrostatic spraying method to spray a diatomite adsorbent on an adhesive on the irregular surface of the base layer. The automotive filter can effectively adsorb PM2.5 particles entering the automobile through an air conditioning system and can also make air resistance not increase obviously. The electrostatic spraying method is adopted to spray diatomite on the surface of the base layer material and can make diatomite distribution uniform, and the thickness is controlled to ensure adsorption capacity under the condition of minimum resistance.

The invention relates to a composite cloth of superfine denier viscose fiber and elastic mesh cloth, wherein the composite cloth is made of a reticular fiber layer and a base cloth, the mass ratio ofthe reticular fiber layer to the base cloth is 52:48, and the reticular fiber layer is formed by a superfine denier viscose fiber slurry by a wet method; and the base cloth is elastic mesh cloth. In the first step, the process step of processing the superfine viscose fiber into dry paper is changed to the wet paper-making process, the forming step is accelerated, and the formed superfine viscose fiber is uniform and flat in whole. The two main raw material parts can be fully and compositely linked by combining the hydroentangled composite process part. The composite cloth finished product prepared by the composite cloth of superfine denier viscose fiber and elastic mesh cloth and the preparation process thereof has a weight of 55-65g/m2 and a thickness of 0.32-0.34mm after being compounded, has fine and compact surface style, is soft and strong in cotton, only shows the characteristics of yarns after being soaked in water in a semitransparent state, and has the advantages of quick water absorption, good mildew-proof and moth-proof effects, excellent air permeability and hygroscopicity, good moisture persistence and has the properties of thick cotton texture and the like.

The invention discloses a method for producing a cushion, which comprises the following steps: (a) selecting and laying natural wild palm fibers and pressing the natural wild palm fibers into a palm fiber layer; (b) spraying an emulsion layer on the outer surface of the palm fiber layer; (c) putting the palm fiber layer sprayed with the emulsion layer in a sulfating tank to carry out sulfur treatment to lead the emulsion layer and the palm fiber layer closely to be combined with each other; and (d) cutting the combined palm fiber layer and emulsion layer into the cushion shape and sewing the outside layer. The method adopts the green raw materials of the natural wild palm fibers and the natural emulsion to produce the cushion by the high-temperature and high-pressure technology and sufficiently uses the inherent three-dimensional reticular fiber structure of the natural wild palm fibers, and the natural emulsion has high elasticity, thus, the cushion has good ventilation property, prevents insect and germs, is neither too hard nor too soft, and has comfortable feeling for the human body.