摘要:
A PET nonwoven fabric for a separator for a secondary battery includes first fibers composed of PET having a melting temperature of 240° C. or more and second fibers composed of PET having a melting temperature of 180˜220° C., respective fibers having two types of fibers having different diameters, and has a fine pore size and uniform pore distribution and exhibits superior surface properties, low surface defects, high mechanical strength and excellent mass production. Even when the temperature of a battery is increased to 200° C. or more, the PET nonwoven fabric has heat resistance which prevents thermal runaway and does not generate melting and shrinking.
摘要:
It is provided that a nonwoven fabric for reinforcing foam molded articles which is excellent in the dimensional stability in a cutting/sewing step, in the followability to a mold in a foam molding step, and gives a foam molded article with excellent appearance and durability. A nonwoven fabric for reinforcing foam molded articles formed by interlacing at least 2 filament nonwoven fabric layers with different apparent density, wherein the nonwoven fabric has base weight of 50-110 g/m2, thickness of 0.5-1.2 mm, 23 to 50 N/5 cm stress at the time of 5% elongation in longitudinal direction, 15 N/5 cm or lower stress at the time of 5% elongation in transverse direction, and air permeability of 50 to 250 cm3/cm2·sec.
摘要翻译:本发明提供一种用于增强发泡成型体的无纺织物,其在切割/缝合步骤中的尺寸稳定性优异,在发泡成型步骤中对模具的追随性,并且提供具有优异的外观和耐久性的发泡成型制品。 一种用于增强发泡成型品的无纺布,其通过交织具有不同表观密度的至少2根长丝非织造织物层而形成,其中该无纺布的基重为50-110g / m 2,厚度为0.5-1.2mm,23至50N / 纵向伸长率为5%时的5cm应力,横向伸长率为5%时的15N / 5cm以下的应力,透气度为50〜250cm 3 / cm 2·秒。
摘要:
Non-woven fabrics are made in a spun-melt process, in which a PLA resin blend is melt-spun into filaments, which are pneumatically drawn and then deposited onto a surface to produce the fabric. The PLA resin includes 1-25% of certain aliphatic or aliphatic-aromatic polyesters that have a number average molecular weight from 4,000 to 70,000 g/mol.
摘要:
[Problem] The objective of the present invention is to provide an elastic mesh structure having exceptional cushioning and reducing noise during compression or recovery.[Solution] A mesh structure comprising a three-dimensional, random-loop, joining structure formed by winding a continuous line of thermoplastic resin to form random loops, bringing the loops into contact with one another in a molten state, and fusing the majority of the contact area, wherein (a) the apparent density of the random-loop contact structure is 0.005-0.200 g/cm3, and (b) the number of contact points per unit weight of the random-loop contact structure is 500-1200/g.
摘要翻译:发明内容本发明的目的在于提供一种弹性网状结构,其在压缩或回复期间具有特殊的缓冲和降低噪音。 [解决方案]一种网状结构,其包括通过缠绕热塑性树脂的连续线而形成的三维无规环接合结构,以形成无规循环,使得环在熔融状态下彼此接触,并将大部分 接触区域,其中(a)无规回路接触结构的表观密度为0.005-0.200g / cm 3,(b)无规回路接触结构单位重量的接触点数为500-1200 / G。
摘要:
A method for forming biodegradable fibers is provided. The method includes blending polylactic acid with a polyepoxide modifier to form a thermoplastic composition, extruding the thermoplastic composition through a die, and thereafter passing the extruded composition through a die to form a fiber. Without intending to be limited by theory, it is believed that the polyepoxide modifier reacts with the polylactic acid and results in branching of its polymer backbone, thereby improving its melt strength and stability during fiber spinning without significantly reducing glass transition temperature. The reaction-induced branching can also increase molecular weight, which may lead to improved fiber ductility and the ability to better dissipate energy when subjected to an elongation force. To minimize premature reaction, the polylactic acid and polyepoxide modifier are first blended together at a relatively low temperature(s). Nevertheless, a relatively high shear rate may be employed during blending to induce chain scission of the polylactic acid backbone, thereby making more hydroxyl and/or carboxyl groups available for subsequent reaction with the polyepoxide modifier. Once blended, the temperature(s) employed during extrusion of the blended composition can be selected to both melt the composition and initiate a reaction of the polyepoxide modifier with hydroxyl and/or carboxyl groups of the polylactic acid. Through selective control over this method, the present inventors have discovered that the resulting fibers may exhibit good mechanical properties, both during and after melt spinning.
摘要:
Disclosed are an artificial dura mater and manufacturing method thereof. The artificial dura mater includes electrospun layers prepared by electrostatic spinning, at least one of which is a hydrophobic electrospun layer. Further, above the hydrophobic electrospun layer, there can be at least one hydrophilic electrospun layer. A transition layer can be further included between the hydrophobic and the hydrophilic electrospun layers. Additionally, cytokines and/or medicines can be affixed to either or both of the hydrophobic and the hydrophilic electrospun layers, by way of bio-printing. The disclosed artificial dura mater shows good biocompatibility, enhances dural tissue regeneration, achieves excellent repairing effects, prevents adhesion, allows complete absorption, has good mechanical properties, ensures low infection rates, and can be loaded with therapeutic agents.
摘要:
A method for forming a biodegradable aliphatic-aromatic copolyester suitable for use in fibers is provided. In one embodiment, for example, an aliphatic-aromatic copolyester is melt blended with an alcohol to initiate an alcoholysis reaction that results in a copolyester having one or more hydroxyalkyl or alkyl terminal groups. By selectively controlling the alcoholysis conditions (e.g., alcohol and copolymer concentrations, catalysts, temperature, etc.), a modified aliphatic-aromatic copolyester may be achieved that has a molecular weight lower than the starting aliphatic-aromatic polymer. Such lower molecular weight polymers also have the combination of a higher melt flow index and lower apparent viscosity, which is useful in a wide variety of fiber forming applications, such as in the meltblowing of nonwoven webs.
摘要:
The present invention is a bioactive, nanofibrous material construct which is manufactured using a unique electrospinning perfusion methodology. One embodiment provides a nanofibrous biocomposite material formed as a discrete textile fabric from a prepared liquid admixture of (i) a non-biodegradable durable synthetic polymer; (ii) a biologically active agent; and (iii) a liquid organic carrier. These biologically-active agents are chemical compounds which retain their recognized biological activity both before and after becoming non-permanently bound to the formed textile material; and will become subsequently released in-situ as discrete freely mobile agents from the fabric upon uptake of water from the ambient environment.
摘要:
A marine flooring assembly having a marine vessel having a fixed surface and a floor covering assembly with an underlayment having an upper surface, an opposing lower surface, and defining a plurality of voids extending from the upper surface to the lower surface, the lower surface of the underlayment directly coupled to the fixed surface of the marine vessel, the floor covering assembly also having a working layer disposed on top of the underlayment, the working layer including a plurality of meshed flexible curled strands, each curled strand having at least one portion directly physically coupled to at least one of another curled strand and an upper surface of the underlayment, the plurality of curled strands defining a lower working surface, an upper working surface, and a plurality of openings thereat.
摘要:
This disclosure relates to polyester fiber that can be used for an airbag fabric. Particularly, the present invention relates to a polyester fiber that has elongation of 1.65% to 2.5% when tensile strength of 1.0 g/d is applied after heat treatment at 185° C. for 2 minutes, and additionally elongates in the range of elongation from 0.5% to 5% at the range of tensile strength from 8.0 g/d to the maximum strength. Also disclosed is a method for preparing the same, and fabric for an airbag prepared therefrom. The polyester fiber simultaneously has low initial Young's modulus and excellent mechanical properties, and thus, it may provide excellent packing, dimensional stability, and excellent air cut-off effect, and simultaneously, minimize impact applied to a passenger thus safely protecting a passenger.