搜索结果: 1-15 共查到“纺织科学技术 air”相关记录24条 . 查询时间(0.044 秒)
Effect of abrasion on the air permeability & mass loss of breathable-coated fabrics
abrasion air permeability breathable-coated fabric
2009/6/17
This paper presents a study on air permeability and relative mass loss in abraded breathable-coated fabrics. The abrasion treatment of different structured samples as well as the outer and reverse sid...
Air Drag Force on a Yarn and Use of a Coaxial Jet for Yarn Operation
Yarn operation Air drag force Coaxial circular jet Coaxial annular jet Power-saving
2009/5/5
we calculated numerically compressible airflows past a yarn in a thin pipe in order to operate yarn using both a circular jet and an annular jet. We proposed the way to arrange air drag coefficients o...
Characteristics of Compressible Air Flow in an Interlacer and Yarn Entanglement
Interlacer Numerical calculation Compressibility Limited Mach number
2009/4/29
The present study is concerned with numerical simulation of compressible air flow in a yarn duct of an interlacer and the relation between air flow and yarn entanglement. A nozzle of circular pipe of...
Characteristics of Incompressible Air Flow in an Interlacer
Interlacer Air injection calculation High Reynolds number k-ε model
2009/4/29
The present study is concerned with numerical simulation of air flow in a yarn duct of an interlacer, which is an apparatus for yarn intermingling. A nozzle of circular pipe of inner diameter d(
Numerical Study on the Principle of Yarn Formation in Murata Air-Jet Spinning
Swirling airflow Fibers Nozzle Yarn MJS
2009/4/21
A realizable k-ε turbulence model was adopted to study the airflow characteristics inside the two nozzles including the slotting-tube of Murata air-jet spinning (MJS). Actions of the two nozzles and ...
Geometry Effect of Air Suction Gun on the Yarn Suction Characteristics
Suction gun Geometry effect Yarn suction force Yarn suction efficiency
2009/4/9
We experimentally discussed the effects of airflow geometries in an air suction gun on the suction characteristics of running yarn. Geometry parameters focused on were 1) compressed-air inflow angle ...
Case Studies of Air Filtration at Microscales: Micro- and Nanofiber Media
Microscales Micro- Nanofiber Media
2009/3/9
In this work, 3-D fibrous geometries are developed to resemble the microstructure of spun-bonded and electrospun filters media and used here to simulate their filtration efficiency and pressure drop. ...
The overall goal of this project is to develop High Efficiency Particulate Air (HEPA) filter media, using conventional fiber spinning techniques, with lower pressure drop than current media through th...
Contributions of Strain Energy and PV-work on the Bending Behavior of Uncoated Plain-woven Fabric Air Beams
PV-work Uncoated Plain-woven Fabric
2009/3/4
The bending performance of fabric air beams varies significantly from conventional beams. Both are dependent upon the constitutive relations of the material, but air beams are further dependent upon t...
Modification of Air Filter Media with Nylon-6 Nanofibers
Air Filter Media Nylon-6 Nanofibers
2009/2/26
Nylon-6 fibers with average diameters below 500 nm were electrospun onto conventional air
filter media at varying weight coverage levels using a multi-nozzle bank. The initial filtration
efficiency ...
Mathematical Modeling of Pneumatic Melt Spinning of Isotactic Polypropylene. Part. I. Modeling of the Air Jet Dynamics
fiber spinning melt blowing nonwoven computational fluid dynamics turbulence
2009/2/19
In this series of publications, the process of nonwoven melt blowing of ultra-fine fibers is presented. The process starts in the dual slot die where two converging air jets draw the molten polymer st...
Analysis of Impact Air-Permeability of Fabrics
impact air-permeability impact permeability index woven fabrics air flow
2009/2/17
In this paper, the methodology of studies on the impact air-permeability of fabrics is presented.Stands for the static and dynamic investigation of textiles are described. A mathematicalmodel of the p...
Selected Aspects of Yarn Formation with a False-twist Method in the Air-jet Spinning Chamber
air-jet spinning false-twist chamber yarn formation
2009/2/16
Some selected aspects of the yarn formation in the air-jet false-twist spinning chamber operating according to the MJS (Murata Jet Spinning) principle were discussed. The chamber under investigation i...
Air Flow in the Air-jet False-twist Spinning Chamber
air-jet spinning false-twist chamber air flow
2009/2/13
We discuss the air flow in a false-twist spinning chamber operating according to the MJS (Murata Jet Spinning) principle. The chamber under investigation is characterised by a straight inlet channel a...
Effect of Air Humidity on Charge Decay and Lifetime of PP Electret Nonwovens
PP filtration fabric corona charging electret electric charge lifetime
2009/2/12
The effects of air humidity on the charge decay and lifetime of polypropylene (PP) electret nonwovens manufactured by the pneumothermic method are presented. The PP fabric samples were corona-charged ...