9results about How to "Improve breaking strength" patented technology

The application discloses a kind of low basis weight high-density fiber material preparation methods, the fiber material includes fiber layer and hot melt powder layer;The fiber layer is filled with superfine powder;Including the following steps: (1) polyvinyl alcohol ultra-short fiber, polyester superfine ultra-short fiber, fine denier ultra-short cellulose fiber are made into mixed slurry, then wet-laid web is made;(2) the wet-laid web is consolidated into intermediate material, then the intermediate material hot water bath is made, and polyvinyl alcohol ultra-short fiber is dissolved;(3) superfine powder is made into suspension, and filled into intermediate material;(4) hot melt powder is made into suspension slurry and coated and fixed.Reduce the unit area mass of material, increase the density of material under low basis weight, utilize the thermal closing pore effect of superfine powder, ensure the safety of battery separator product.Realize the technical requirement of low basis weight, high density and high porosity, solve the problem that existing fiber material cannot meet the use requirement of battery separator.

The application relates to the technical field of grass-proof cloth processing, in particular to a degradable and long-service-life grass-proof cloth and a preparation method thereof, which is prepared from the following raw materials in percentage by weight: 50-70% of polylactic acid, 1-3% of a modifier, 0.5-1% of a plasticizer, 2-5% of a monoacylglyceride, 5-10% of starch, and the rest of porous fillers, wherein the modifier is obtained by mixing fatty acid polyoxyethylene ester, sulfonated lignin salt and hydroxyethyl methacrylate. The grass-proof cloth prepared through the above-mentioned formula has excellent degradability, strong mechanical properties and weather resistance, so that the grass-proof cloth can maintain stable performance for a long time, thereby prolonging the service life.

The application belongs to the technical field of modified functional fibers, and particularly relates to a manufacturing method of high-bulkiness special-shaped hollow fibers. The low-crystalline polyester chip is obtained by modifying the polyester, and the functional components such as graphite and tourmaline are introduced, and the high-bulkiness special-shaped hollow fibers are prepared by using a special-shaped spinneret to melt and spin, so that the hollow degree and bulkiness of the fibers are effectively improved, good breaking strength is obtained, and the oxygen index is effectively increased.

This invention belongs to the field of fabric technology, specifically relating to a high-strength abrasion-resistant composite fabric and its preparation process. The high-strength abrasion-resistant composite fabric includes a base fabric and an abrasion-resistant layer. The base fabric is made of a blend of polyester and cotton fibers in a mass ratio of 2-3:1. The abrasion-resistant layer comprises the following components by weight: 50-60 parts polyurethane resin; 8-10 parts modified nano-zirconia; 3-5 parts fluorinated silane phenol; 0.6-0.8 parts dispersant; and 40-50 parts organic solvent. The composite fabric provided by this invention includes a base fabric and an abrasion-resistant layer. This invention modifies the abrasion-resistant layer by adding modified nano-zirconia and fluorinated silane phenol, thereby improving the overall performance of the composite fabric and obtaining a high-strength composite fabric with good abrasion resistance, waterproof performance, warmth retention, and antibacterial properties. It is suitable for making functional jacquard fabrics using a jacquard process.

This invention discloses a nonwoven floor mat and its manufacturing process, belonging to the technical field of floor protection materials. The mat comprises, from top to bottom, a PE film layer, a nonwoven fabric layer, a self-adhesive layer, and a release paper layer. The PE film layer is a cast PE film, anchored to the nonwoven fabric layer by solvent-free hot pressing. The nonwoven fabric layer is a three-dimensional interconnected porous structure formed by pre-needling and reverse main needle punching of chemical fibers, with an air permeability ≥300mm / s and a saturated moisture absorption rate ≥15%. The self-adhesive layer is a grid-like water-based acrylic pressure-sensitive adhesive layer, and the width and length ratio of the PE film to the nonwoven fabric is 1:1. The manufacturing process includes four main steps: nonwoven fabric preparation, self-adhesive coating, nonwoven fabric-PE film lamination, and finished product post-processing. This invention, through synergistic optimization of structure and process, simultaneously achieves the core properties of waterproofing, anti-slip, self-adhesive, breathability, residue-free application, and moisture absorption and mildew prevention, making it widely adaptable to the surface protection needs of various scenarios such as construction, decoration, maintenance, painting, and warehousing.

This invention discloses a high-temperature resistant and acid / alkali corrosion resistant flat-plate biological filler and its preparation process, belonging to the field of flat-plate biological filler technology. It addresses the technical problem that the specific surface area, mechanical strength, high-temperature resistance, and acid / alkali corrosion resistance of existing flat-plate biological fillers need further improvement. Specifically, it includes the following steps: Modified PP fibers are uniformly laid along the X-axis, followed by uniformly laid ES fibers, and then mixed fibers are laid along the Y-axis. After hydroentangling and drying, a base membrane material is obtained. This invention effectively improves the specific surface area and mechanical strength of the flat-plate biological filler by activating and coupling the PP fibers, combining hydroentangling with in-situ construction of an organosilicon crosslinking network and heat setting treatment.

The invention relates to the technical field of new materials, in particular to biodegradable filter cloth and a preparation method thereof.The biodegradable filter cloth is prepared from, by weight, polybutylene terephthalate, modified starch, polybutylene adipate, bamboo fibers, maleic anhydride grafted polyolefin elastomer and a lubricant; through the synergistic effect of all the components and the preparation process, the performance of the filter cloth can be optimized, the component compatibility problem is solved through cooperation of the modified starch and the compatilizer, the uniformity and compactness of the material structure are guaranteed through the bamboo fiber pretreatment and gradient melting process, the pore characteristics of the filter cloth are optimized through the segmented spinning and weaving process, and the filter cloth has the advantages of being high in practicability and high in practicability. Finally, the filter cloth simultaneously has excellent mechanical properties, efficient filtering performance and good biodegradability, is suitable for industrial production, and has wide application prospects in the fields of industrial filtration, environment-friendly treatment and the like.

This invention belongs to the field of biomaterials and relates to a suture with immediate, sustained, and long-lasting analgesic function and its preparation method. The preparation method includes the following steps: using elastic fibers in a stretched state as the receiving substrate, electrospinning is performed on the fibers with an electrospinning solution containing analgesic drugs; the stretching force on the elastic fibers is then removed to obtain a yarn with a surface wrinkled topology; the yarn with the surface wrinkled topology is sequentially heat-set and cool-set to fix the surface wrinkled topology; the elastic fibers in the yarn with the surface wrinkled topology are extracted to obtain a hollow nanofiber; and the yarn is impregnated to obtain the suture with immediate, sustained, and long-lasting analgesic function. The prepared suture with immediate, sustained, and long-lasting analgesic function avoids the initial burst release of the drug, maintains the mechanical integrity of the suture, prevents knot slippage, displacement, and drug inactivation, and achieves the immediate, sustained, and long-lasting analgesic function of the suture.

The invention provides a wool acetic acid intertwined composite yarn and a preparation method and application thereof. The wool and acetic acid intertwined composite yarn comprises inner-layer fibers and outer-layer fibers, the inner-layer fibers are of a core-spun structure with polyester filaments as core yarn and wool as a wrapping layer, and the outer-layer fibers are of a wrapping structure formed by wrapping diacetic acid filaments on the surfaces of the inner-layer fibers; wherein the wrapping density of the diacetate filaments is 5-15 circles / cm, the rotation angle is 20-60 degrees, and the outer layer coverage rate is 15-95%. The polyester filament yarn is used as the core yarn of the inner-layer fiber, the polyester core yarn is wrapped by the wool, the outer-layer diacetate filament yarn wraps the inner-layer fiber according to specific parameters, and the outer-layer diacetate filament yarn and the polyester filament yarn of the inner-layer fiber form a stable reinforced network, so that in the process that the yarn is subjected to tension, friction and tearing force, the yarn is not prone to deformation. The stress can be effectively dispersed and transmitted to the polyester core yarn, so that the overall breaking strength and the fatigue resistance of the composite yarn are greatly improved.