Manufacturing Technique of Sound-Absorbent PET/TPU Composites

2011 ◽  
Vol 239-242 ◽  
pp. 1968-1971 ◽  
Author(s):  
Jia Horng Lin ◽  
Chia Chang Lin ◽  
Chao Chiung Huang ◽  
Ching Wen Lin ◽  
Kuan Hsun Su ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Tensile Strength ◽  
Melting Point ◽  
Sound Absorption ◽  
Absorption Rate ◽  
Optimum Parameter ◽  
Thermoplastic Polyurethane ◽  
Nonwoven Fabrics ◽  
Manufacturing Technique ◽  
Pet Fibers

Five testing matrixes were prepared to test with sound absorption, tensile strength, and thermal conductivity respectively. The low-melting-point (low-Tm) polyester (PET) fibers were blended with weight ratios (10 wt%, 20 wt%, 30 wt%, 40 wt% and 50 wt %) with PET staples, forming the PET nonwoven fabrics. The thermoplastic polyurethane (TPU) was thermal bounded with the nonwoven fabrics with different lamination number to examine the sound absorption rate, creating the PET/ TPU composites. Afterward, four sets of samples – PET nonwoven fabrics and PET/ TPU composites with TPU films laminated on the front, in the middle, and on the rear of the composites, were compared. PET/ TPU composite with TPU film laminated in the middle exhibited the optimum sound absorption; moreover, 30 wt% was proved to be the optimum parameter of the low-Tm PET fibers for the PET/ TPU composites.

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.

Effects of Needle-Punch Depth on Properties of PET/LPET/Kevlar Nonwoven Geotextiles

2014 ◽  
Vol 910 ◽  
pp. 266-269 ◽  
Author(s):  
Jia Horng Lin ◽  
Jing Chzi Hsieh ◽  
Jia Hsun Li ◽  
Wen Hao Hsing ◽  
Ching Wen Lou
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Melting Point ◽  
Geotechnical Engineering ◽  
Engineering Applications ◽  
Puncture Resistance ◽  
Bursting Strength ◽  
Nonwoven Fabrics ◽  
Pet Fibers ◽  
Tearing Strength

Geotextile has been commonly used in civil and geotechnical engineering applications, and the majority of geotextiles is made of nonwoven fabrics. Therefore, this study combines crimped polyester (PET) fibers, recycled Kevlar unidirectional selvage fibers, and low-melting-point PET (LPET) fibers to form PET/Kevlar/LPET nonwoven geotextiles, and then examines how various neelde-punch depths influence mechanical properties of the resulting nonwoven geotextiles. The tensile strength, tearing strength, bursting strength, and static puncture resistance of the nonwoven fabrics increase as a result of an increase of 0.3 cm to 0.5 cm in needle-punch depth. However, an increase of 0.5 cm to 0.7 cm causes a slight decrease in all aforementioned properties.

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.

Manufacturing Technique and Property Evaluations of Degradable Sound-Absorption Plates

2014 ◽  
Vol 496-500 ◽  
pp. 460-463
Author(s):  
Jia Horng Lin ◽  
Ying Huei Shih ◽  
Jin Mao Chen ◽  
Ching Wen Lou
Keyword(s):  
Quality Of Life ◽  
Tensile Strength ◽  
Melting Point ◽  
Public Safety ◽  
Sound Absorption ◽  
High Quality ◽  
Manufacturing Technique

Following the high quality of life that people pursue, the requirements to air and environment are stricter. People value the quality of sleeping and public safety, thus they pay more attention to prevent noises. Noise makes people weary and distracted, and may eventually result in accidents. Therefore, this study uses polylactide fiber (PLA) and low melting point polylactide fiber (LPLA) to make sound absorbent PLA/LPLA plates, after which the tensile strength, softness, and sound absorption of the plates are evaluated.

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.

Increasing heat transfer performance of thermoplastic polyurethane by constructing thermal conduction channels of ultra-thin boron nitride nanosheets and carbon nanotubes

2020 ◽  
Vol 44 (43) ◽  
pp. 18823-18830
Author(s):  
Yue Ruan ◽  
Nian Li ◽  
Cui Liu ◽  
Liqing Chen ◽  
Shudong Zhang ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Thermal Conductivity ◽  
Carbon Nanotubes ◽  
Tensile Strength ◽  
Thermal Conduction ◽  
Heat Transfer Performance ◽  
Thermoplastic Polyurethane ◽  
Transfer Performance ◽  
Boron Nitride Nanosheets ◽  
Thermally Conductive

The TPU-based thermally conductive composite reaches a thermal conductivity of 1.35 W m−1 K−1 and increases the tensile strength by at least 300%.

Nonwoven Fabrics Made by Using Recycled Polyester Fiber to Reinforce Low-Melting-Point Polylactide: Processing Technique and Property Evaluation

2014 ◽  
Vol 910 ◽  
pp. 230-233
Author(s):  
Jia Horng Lin ◽  
Ying Huei Shih ◽  
Ching Wen Lin ◽  
Ching Wen Lou
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Melting Point ◽  
Polymeric Material ◽  
Processing Technique ◽  
Air Permeability ◽  
Tear Strength ◽  
Nonwoven Fabrics ◽  
Property Evaluation ◽  
Polymeric Waste

Polymeric material, which is commonly used in packaging, has been widely applied due to the fact that it is lightweight and chemical resistant. Being non-degradable, polymeric waste can thus only be eliminated by burning, and subsequently, there is a rising need for degradable polymeric material to manage this manner of disposal. This study thus uses degradable, low-melting-point polylactide (LMPLA) fibers and recycled polyester (RPET) fibers to make nonwoven fabrics for packaging. The tensile strength, tear strength, and air permeability of the nonwoven fabrics are then tested. The experiment results show that a 40% of RPET fibers can effectively promote the mechanical properties of the LMPLA nonwoven fabrics.

scholarly journals Development of Needle-Punched Nonwoven Fabrics from Natural Fibers for Sound Absorption Behavior

2021 ◽  
Author(s):  
K Savitha ◽  
Grace S Annapoorani ◽  
V R Sampath
Keyword(s):  
Thermal Conductivity ◽  
Sound Absorption ◽  
Fiber Strength ◽  
Natural Fibers ◽  
Areal Density ◽  
Fiber Layer ◽  
Nonwoven Fabrics ◽  
Sesbania Grandiflora ◽  
Needle Punching ◽  
Needle Punching Machine

: The natural fibers prepared from plant waste have parameters like fiber strength, length, and chemical composition which are suitable to fabric and the fibers into nonwoven. The selected plants were identified from their botanical names by comparing the collected samples with those of known identity in the herbarium of a botanical survey in India with their names as Sesbania grandiflora, Mutingia Calabura, and Bauhinia Purpurea. A novel Portable multi-fibre decorticator machine was fabricated and used to extract the fibers from the plant stem and barks. The extracted fibers are done physical characterization and their properties are investigated. The extracted fibers are blended with other natural fibers like jute and flax in appropriate proportions 45:45:10 and nonwoven fabrics were prepared by the needle-punching method. Three and four-layer nonwovens are produced using a needle punching machine. The developed nonwovens are tested using standard apparatus and the effect of natural fibers in areal density, thickness; bulk density, porosity, and air permeability are analyzed. In addition, thermal conductivity and sound absorption behaviour are also investigated. The sound absorption property increases concerning areal density and fabric thickness. The thermal conductivity increased by increasing the fiber layer in the fabric to evaluate its potential as a protective barrier material in non-woven face masks.

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.

Sound absorption and thermal insulation properties of composite thermoplastic polyurethane/polystyrene (TPU/PS) nanofiber web and TPU nanofiber web and PS-extracted TPU/PS microfiber web

2021 ◽  
pp. 152808372110395
Author(s):  
Neslihan Karaca ◽  
İlkay Özsev Yüksek ◽  
Nuray Uçar ◽  
Ayşen Önen ◽  
Cafer Kirbaş
Keyword(s):  
Thermal Conductivity ◽  
Thermal Insulation ◽  
Sound Absorption ◽  
Composite Nanofibers ◽  
Fiber Diameter ◽  
Thermoplastic Polyurethane ◽  
Low Frequency ◽  
Soxhlet Extraction ◽  
Nanofiber Web ◽  
Potential Use

In this study, composite thermoplastic polyurethane (TPU)/polystyrene (PS) nanofiber web and TPU nanofiber web and PS-extracted TPU/PS microfiber web have been experimentally investigated with regard to sound absorption and thermal conductivity coefficients to observe a potential use in sound and thermal insulation areas. Moreover, other properties such as surface area, morphology, tensile strength/elongation, air permeability, and thermal degradation have been analyzed. It has been observed that nanofiber web properties such as fiber diameter, extensibility, pore volume, and porosity have been clearly changed by Soxhlet extraction of PS from the composite TPU/PS nanofibers. PS-extracted TPU/PS fibers can be preferred for the low frequency (600–800 Hz) due to higher SAC (0.7). On the other hand, TPU nanofibers were more effective at medium frequencies (around 3000 Hz, SAC 0.6). Both TPU and PS-extracted TPU/PS composite fibers had similar thermal conductivities, whereas TPU/PS composite nanofibers had lowest thermal conductivity (0.05 W/mK) with moderate maximum SAC value (around 1000 Hz, SAC 0.5–0.6).

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