Sound-Absorbing Evaluation on Nylon 6/Low-Melting PET Nonwoven Fabric

2012 ◽  
Vol 184-185 ◽  
pp. 1207-1210 ◽  
Author(s):  
Jia Horng Lin ◽  
Ying Hsuan Hsu ◽  
Chen Hung Huang ◽  
Yu Chun Chuang ◽  
Ting Ting Li ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Noise Pollution ◽  
Nonwoven Fabric ◽  
Nylon 6 ◽  
Air Permeability ◽  
Maximum Tensile Strength ◽  
Quality Life ◽  
Pet Fibers ◽  
Punching Process ◽  
Absorbing Property

In recent years, as quality life improves, people begin to focus on quiet environment. Long-term noise pollution makes trouble of dysphoria and concentrating for people, thus noise-reduction has become an urgent project. This study uses Nylon 6 fibers, blended with different contents of low-melting PET fibers (10 wt%, 20 wt%, 30 wt%, 40 wt% and 50 wt%), to fabricate Nylon6/ LPET nonwoven fabrics after needle-punching process. Afterwards, their maximum tensile strength, air permeability, sound absorption coefficient were all evaluated. When low-melting PET fibers contain 30 wt%, the nonwoven fabric has the better sound-absorbing property. Herein, the maximum tensile strength reaches 70.79 N and 31.01 N, respectively in CD and MD; the air permeability is about 116.5 [cm3/(cm2/s)]

Effect of Fiber Fineness on Acoustic Absorption Property of Nylon 6/Low-Melting PET/Recycled PET Nonwoven

2014 ◽  
Vol 496-500 ◽  
pp. 464-467
Author(s):  
Ching Wen Lou ◽  
Ying Hsuan Hsu ◽  
Ting Ting Li ◽  
Jia Horng Lin
Keyword(s):  
Production Efficiency ◽  
Noise Pollution ◽  
High Strength ◽  
Nylon 6 ◽  
Recycled Pet ◽  
Needle Punching ◽  
Pet Fibers ◽  
High Production ◽  
Punching Process ◽  
Coefficient Property

In recent years, as global technical progress grows, many mechanized machines are developed continuously. Mechanization has substituted for manpower in many factories for promotion of production efficiency, leading to mechanical noise happening more severely. If people are subjected to noise pollution for long term, they would happen dysphoria and absent mindedness, resulting in accident occurrence. Therefore, how to effectively reduce noise pollution becomes an urgent subject. Moreover, rapid population development and fast-growth economy raise consumption in every country, driving industry into high-production and high-consumption times and meanwhile generating much of wastes. In order to achieve sustainable development, these wastes should be recycled effectively. Therefore, 20 wt% recycled PET fibers were added in this study. This paper mainly used 3D and 15D Nylon fibers (70, 60, 50, 40, 30 wt%), low-melting PET fibers (10, 20, 30, 40, 50 wt%) and 20 wt% high-strength PET fibers, to fabricate Nylon 6/Low melting PET/ Recycled high-strength PET nonwoven via needle-punching process. After that, tensile strength, air permeability and sound absorption coefficient property of resulting nonwoven were tested and then evaluated respectively.

scholarly journals A Study on the Entanglement and High-Strength Mechanism of Spunlaced Nonwoven Fabric of Hydrophilic PET Fibers

2013 ◽  
Vol 8 (4) ◽  
pp. 155892501300800 ◽  
Author(s):  
Hong Wang ◽  
Jingjing Zhu ◽  
Xiangyu Jin ◽  
Haibo Wu
Keyword(s):  
Tensile Strength ◽  
High Strength ◽  
Nonwoven Fabric ◽  
Fiber Content ◽  
Nonwoven Fabrics ◽  
Pull Out ◽  
Fundamental Research ◽  
Pet Fibers ◽  
Set Up

Spunlaced nonwoven fabrics have been widely used recently, but fundamental research on the spunlaced nonwoven process is relatively weak. It is inexplicit until now how fibers are entangled with each other during the hydroentangling process. In this paper, a pull-out experiment designed to study the entanglement properties of spunlaced nonwoven fabrics using common and hydrophilic PET fibers as objects is described. It was found that the broken fiber content can be used to represent the entanglement intensity of the spunlaced nonwoven fabrics. In addition, a formula was set up to calculate the tensile strength of the spunlaced nonwoven fabric based on its pull-out behavior.

scholarly journals Manufacturing Technique of Heat-Insulating and Flame-Retardant Three-Dimensional Composite Base Fabrics

2013 ◽  
Vol 8 (1) ◽  
pp. 155892501300800
Author(s):  
Jia-Horng Lin ◽  
Chen-Hung Huang ◽  
Ching-Wen Lin ◽  
Ching Wen Lou
Keyword(s):  
Thermal Conductivity ◽  
Tensile Strength ◽  
Melting Point ◽  
Flame Retardant ◽  
Three Dimensional ◽  
Weight Ratio ◽  
Air Permeability ◽  
Maximum Tensile Strength ◽  
Manufacturing Technique ◽  
Pu Foam

In this research, we create a PET/TPU/PU composite base fabric from a PET nonwoven base fabric, a TPU honeycomb grid, and a PU foam plank. First, the PET base fabric is made from 7D three-dimensional-hollow-crimp fiber (7D PET) and low-melting-point (low-Tm) fibers with weight ratio and number of lamination layers as the parameters. The hardness and rebound resilience rate of the PET nonwoven base fabric are 71% and 63.5%, respectively. The PET nonwoven base fabric's optimum air permeability is 240 cm3/s/cm2. The maximum tensile strength of the PET nonwoven base fabric with 9 layers of lamination is 39.8 kg/cm2, and when the weight ratio is either 4:6 or 3:7, changes to 40 kg/cm2. The PET/TPU/PU composite base fabric has a LOI of 33 when the number of lamination layers is 10, or when the low-Tm fiber content is 50%; the composite base fabric's average optimum thermal conductivity is 0.914 W/mK.

Manufacturing Technique and Property Evaluation of RFPET/TPET Hybrid Nonwoven Fabric

2013 ◽  
Vol 365-366 ◽  
pp. 1165-1168
Author(s):  
Jia Horng Lin ◽  
Ya Lan Hsing ◽  
Wen Hao Hsing ◽  
Jin Mao Chen ◽  
Ching Wen Lou
Keyword(s):  
Tensile Strength ◽  
Polyethylene Terephthalate ◽  
Three Dimensional ◽  
Far Infrared ◽  
Nonwoven Fabric ◽  
Air Permeability ◽  
Infrared Emissivity ◽  
Environment Protection ◽  
Nonwoven Fabrics ◽  
Property Evaluation

Heat energy plays a significant role in resources and industries, which makes the development of energy-saving and thermal retention materials important to environment protection. This study combines three-dimensional hollow Polyethylene Terephthalate (TPET) fibers, recycled far-infrared polyethylene terephthalate (RFPET) fibers, and low melting temperature polyethylene terephthalate (LPET) fibers at various ratios to make the RFPET/TPET hybrid nonwoven fabric. The tensile strength, tearing strength, air permeability, and far infrared emissivity of the fabrics are evaluated. With a blending ratio of 8:0:2, the hybrid nonwoven fabrics have the optimum tensile strength of 145 N, tear strength of 184 N, and air permeability of 205 cm3/cm2/s.

Evaluation of Mechanical Properties of Dimpled PET Fiber Fabricated by Electrospinning Method

2018 ◽  
Vol 940 ◽  
pp. 8-14
Author(s):  
Kazuto Tanaka ◽  
Ryota Kawasaki ◽  
Tsutao Katayama ◽  
Yusuke Morita
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Stent Graft ◽  
Porous Scaffold ◽  
Fiber Surface ◽  
Nonwoven Fabric ◽  
Nonwoven Fabrics ◽  
Electrospinning Method ◽  
Pet Fibers ◽  
High Humidity Environment

Insufficient endothelialization of stent grafts tends to cause a problem of thrombosis formation. Because the structure of nanofibers, generally defined as fibers with a diameter below 1 μm, resembles the structure of an extracellular matrix, nanofibers are applied to scaffolds for regenerative medicine. Using nanofibers as the covering material of the stent graft can be expected to solve the problem of the stent graft. Previous studies have shown that a porous scaffold offers better surfaces to anchor and culture endothelial cells than a nonporous scaffold. Therefore, fibers with nanoorder dimples are expected to promote endothelialization. As a method of forming the dimple shape on the surface of the PET fiber, there is a method utilizing a difference in the volatilization rate of the solvent in the high humidity environment in the electrospinning method. For practical application of the stent graft to artificial blood vessels, the mechanical properties of the dimpled PET fiber should be clarified. In this study, the mechanical properties of single nanofibers and nonwoven fabrics of PET fibers with dimples on their surface were evaluated by tensile test. By forming the dimple shape on the fiber surface, the tensile strength of single PET fibers with dimples was 90 % lower than that of single PET fibers with a smooth surface. In the fabrication process of nonwoven fabric, the addition of EG delayed the volatilization of the PET solution, and the fibers adhered to each other. The bonding between the fibers contributed to the tensile strength of the nonwoven fabric.

Mechanical and Physical Property Evaluations of Kevlar/Polyester Complex Nonwoven Fabrics

2013 ◽  
Vol 457-458 ◽  
pp. 61-64
Author(s):  
Ching Wen Lou ◽  
Wen Hao Hsing ◽  
Chien Teng Hsieh ◽  
Jia Horng Lin
Keyword(s):  
Water Permeability ◽  
Manufacturing Process ◽  
Physical Property ◽  
Nonwoven Fabric ◽  
Air Permeability ◽  
Tear Strength ◽  
Nonwoven Fabrics ◽  
Mechanical And Physical Properties ◽  
Pet Fibers ◽  
Different Content

Geotextiles made of nonwoven fabrics can be used in different fields, such as groynes, dams, seawalls, revetments, dunes, and hillsides, and the structures of nonwoven fabrics can be changed accordingly. This study explores the influence of different content of Kevlar fibers on the mechanical and physical properties of Kevlar/Polyester (PET) complex nonwoven fabrics. As specified in a nonwoven fabric manufacturing process Kevlar fibers and PET fibers are blended with various ratios to form Kevlar/PET complex nonwoven fabrics, which are then tested for tear strength, air permeability, and water permeability. The experiment results show that increasing Kevlar fibers reduces the tear strength, air permeability, and water permeability.

Process Evaluation of the Health-Care and Protective Composite Nonwoven

2012 ◽  
Vol 627 ◽  
pp. 57-61
Author(s):  
Ching Wen Lou ◽  
Ya Lan Hsing ◽  
Ying Huei Shih ◽  
Ting Ting Li ◽  
Wen Hao Hsing ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Far Infrared ◽  
Air Permeability ◽  
Machine Direction ◽  
Bursting Strength ◽  
Bonding Effect ◽  
Weak Property ◽  
Stab Resistance ◽  
Pet Fibers ◽  
Composite Nonwoven

This study uses Far-infrared fiber (FIR), PET fiber, and Low-Tm PET fiber to prepare FIR/PET/Low-Tm PET composite nonwoven. In the processing, the FIR fiber was constant as 10 wt%, and low-Tm PET fiber was varied from 10, 30, 50, 70 and 90 wt% in order to understand thermo-bonding effect on nonwovens. After being hot-pressed, the FIR/PET Low-Tm PET composite nonwoven was evaluated in terms of tensile strength, bursting strength, air permeability, stab resistance and FIR emissivity. The study shows that tensile strength along cross machine (CD) is higher than that along machine direction (MD), and stronger with increase of low-Tm PET fiber. However, the bursting strength and stab resistance generates the weak property only at 50 wt% of low-Tm PET fibers. The air permeability and far-infrared emissivity display optimal when the low-Tm PET fiber contained 90 wt%.

Processing Technology and Characteristic Evaluation of Absorbent Cotton

2013 ◽  
Vol 365-366 ◽  
pp. 1177-1180
Author(s):  
Jia Horng Lin ◽  
Zong Han Wu ◽  
Chao Tsang Lu ◽  
Ting Ting Li ◽  
Ching Wen Lou
Keyword(s):  
Tensile Strength ◽  
Water Vapor ◽  
Water Absorption ◽  
Polylactic Acid ◽  
Water Retention ◽  
Nonwoven Fabric ◽  
Air Permeability ◽  
Absorbent Cotton ◽  
Tearing Strength ◽  
Optimal Blending

Hemostasis is the critical steps for trauma and emergency. When injured person is under circumstance of hemorrhage, the important step is immediate hemostasis because mild hemorrhage makes patient feeling pain and dizziness while abundant hemorrhage would lead to coma, shock even death. Therefore, hemostasis becomes an important rescue issue to bleeding patient. This study uses Polylactic acid (PLA) and Polyacrylate (HPA) to prepare PLA/HPA nonwoven fabric with different weight ratios of 100/0,95/5,90/10, 85/15, 80/20 wt%/wt%, following with discussions of tensile strength, tearing strength, softness, air permeability, water vapor transmittance, water absorption, water retention. The results show that, 80 wt%/20 wt% of PLA fiber and HPA fiber was the optimal blending ratio, and its water absorption, water retention and softness were respectively improved by 323 %, 245 % and 22.3 % by contrast with 100 wt%/0 wt% of PLA and HPA; but its tensile strength was decreased by 63 % even that still reaches the strength of absorbent cotton.

The Primary Study on Polyester/ Polypropylene Sound-Absorption Nonwoven Fabric

2012 ◽  
Vol 554-556 ◽  
pp. 136-139 ◽  
Author(s):  
Chen Hung Huang ◽  
Ting Ting Li ◽  
Yu Chun Chuang ◽  
Ching Wen Lou ◽  
Jin Mao Chen ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Tensile Strength ◽  
Absorption Coefficient ◽  
Sound Absorption ◽  
Nonwoven Fabric ◽  
Low Noise ◽  
Primary Study ◽  
Maximum Tensile Strength ◽  
Nonwoven Fabrics ◽  
Tearing Strength

As social civilization advances, more and more people reside in the city. Consequently, the number of automobiles and locomotives increases, causing greenhouse effect and noise pollution increasingly serious. Therefore, lowering the temperature and reducing the noise in living conditions has become an urgent task, in order to save resources usage amount and to produce a low-noise dwelling environment. In this study, the sound-absorption and heat-insulation nonwoven fabrics were firstly prepared by three-dimensional crimp hollow polyester fiber (PET) fibers and Polypropylene (PP) fibers based on nonwoven processing technology, following by sound-absorption coefficient test, thermal conductivity test, as well as maximum tensile strength and maximum tearing strength tests. The results show that, 70/30 wt% PET/ PP nonwoven fabrics have the maximum tensile strength of 2.47 MPa (CD) and 1.67 MPa (MD), in addition with the maximum tearing strength of 83.96 kN/m (CD), 111.88 kN/m (MD); the 90/10 wt% PET/ PP nonwoven presents the lowest thermal conductivity coefficient of 0.0365 W/K‧m; nonwoven with three different ratios show the similar sound-absorbing curves, which all reaches the highest absorption coefficient of 0.76 at 4000 Hz.

A Possible Basis for Nondestructive Characterization of Ropes of Nylon 6

1997 ◽  
Vol 503 ◽  
Author(s):  
H. Jiang ◽  
M. K. Davis ◽  
R. K. Eby ◽  
P. Arsenovic
Keyword(s):  
Tensile Strength ◽  
Service Life ◽  
Fiber Diameter ◽  
Structural Parameters ◽  
Crystal Form ◽  
Nylon 6 ◽  
Remaining Service Life ◽  
Nondestructive Characterization ◽  
Fractional Content

ABSTRACTPhysical properties and structural parameters have been measured for ropes of nylon 6 as a function of the number of use operations. The fractional content of the α crystal form, sound velocity, birefringence, tensile strength and length all increase systematically and significantly with increasing the number of use operations. The fractional content of the γ crystal form and fiber diameter decrease with use. These trends indicate that the measurement of such properties and structural parameters, especially the length, provide a possible basis for establishing a reliable, rapid, and convenient nondestructive characterization method to predict the remaining service life of nylon 6 ropes.

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