scholarly journals Effect of Silicone Inlaid Materials on Reinforcing Compressive Strength of Weft-Knitted Spacer Fabric for Cushioning Applications

Polymers ◽  
2021 ◽  
Vol 13 (21) ◽  
pp. 3645
Author(s):  
Annie Yu ◽  
Sachiko Sukigara ◽  
Miwa Shirakihara
Keyword(s):  
Mechanical Properties ◽  
Compressive Strain ◽  
Compression Properties ◽  
Elastic Tubes ◽  
Compression Behaviour ◽  
Silicone Foam ◽  
Three Samples ◽  
Spacer Fabric ◽  
Different Types ◽  
Spacer Fabrics

Spacer fabrics are commonly used as cushioning materials. They can be reinforced by using a knitting method to inlay materials into the connective layer which reinforces the structure of the fabric. The compression properties of three samples that were fabricated by inlaying three different types of silicone-based elastic tubes and one sample without inlaid material have been investigated. The mechanical properties of the elastic tubes were evaluated and their relationship to the compression properties of the inlaid spacer fabrics was analysed. The compression behaviour of the spacer fabrics at an initial compressive strain of 10% is not affected by the presence of the inlaid tubes. The Young’s modulus of the inlaid tubes shows a correlation with fabric compression. Amongst the inlaid fabric samples, the spacer fabric inlaid with highly elastic silicone foam tubes can absorb more compression energy, while that inlaid with silicone tubes of higher tensile strength has higher compressive stiffness.

Effect of inlaid elastic yarns and inlay pattern on physical properties and compression behaviour of weft-knitted spacer fabric

2020 ◽  
pp. 152808372094774 ◽  
Author(s):  
Annie Yu ◽  
Sachiko Sukigara ◽  
Shunji Takeuchi
Keyword(s):  
Air Permeability ◽  
Compression Properties ◽  
Compression Behaviour ◽  
Spacer Fabric ◽  
Novel Method ◽  
Cost Efficient ◽  
End Use ◽  
Fabric Weight ◽  
Spacer Fabrics ◽  
And Control

Spacer fabrics are commonly used as cushioning materials. Their compression properties are one of the most important concerns in determining their specific end-use. Therefore, it is time and cost- efficient to have another means available that could allow quick and easy modifications to the compression behaviour of spacer fabrics and control them too. In this study, a method that uses an elastic inlay is adopted to modify the physical and compression properties of spacer fabrics. Fifteen samples constructed with different spacer structures and inlay yarns and patterns were fabricated and then evaluated. The results show that spacer fabrics with different thicknesses, densities and compression behaviours can be obtained by using different inlay patterns and elastic yarns. Increasing the number of miss stitches in the inlay pattern can help to increase the thickness and stiffness of spacer fabric and withstand a higher compression strength. However, when the number of miss stitches further increases to 3 miss stitches between every tuck stitch, the irregularity of the spacer structure would increase and could show adverse effects to certain spacer structures. The spacer fabric made by incorporating an elastic inlay can retain air permeability and a lower fabric weight than that made by the knit stitches of elastic yarns together with the surface yarns. By changing the inlay pattern, a spacer fabric with different compression behaviours in different areas of the same fabric can be realised. This novel method can increase the flexibility of creating a spacer fabric with the desired properties.

Mechanical properties of the surface membrane of lattice spacer-fabric flexible inflatable composites

2021 ◽  
pp. 004051752110466
Author(s):  
Tong Yang ◽  
Min Luo ◽  
Zhuanyong Zou ◽  
Pibo Ma
Keyword(s):  
Mechanical Properties ◽  
Surface Membrane ◽  
Composite Membranes ◽  
Vital Role ◽  
Specific Strength ◽  
Spacer Fabric ◽  
Bearing Loads ◽  
Spacer Fabrics ◽  
Woven Structure ◽  
Performance Research

The surface membrane plays a vital role in bearing loads of flexible inflatable composites. In this work, the mechanical properties of the upper and lower surfaces of inflatable composites and spacer fabrics were studied. It focused on the changes in mechanical properties of surfaces of spacer fabrics with different structures after coating and damage characteristics. The results show that the PVC resin improves the mechanical properties of the surface, which penetrates into the structure to make the yarns bond to each other and adhere to the resin on the surface. And compared with knitted structures, composite membranes with a woven structure have the characteristics of specific strength. This provides data accumulation for performance research of flexible inflatable composites, finite element calculation analysis, and the experimental reference for broadening the application in military pontoons and marching tents.

Prediction and analysis of compression behaviour of warp-knitted spacer fabric with cylindrical surface

2018 ◽  
Vol 48 (9) ◽  
pp. 1489-1504 ◽  
Author(s):  
Mrinal K Datta ◽  
B K Behera ◽  
Ashvani Goyal
Keyword(s):  
Human Body ◽  
Cylindrical Surface ◽  
Radius Of Curvature ◽  
Body Parts ◽  
Energy Effect ◽  
Compression Behaviour ◽  
Spacer Fabric ◽  
Medical Textile ◽  
Experimental Values ◽  
Spacer Fabrics

Nowadays, applications of spacer fabric cover wider areas of technical textile. It is used in the automotive textile, personal protective clothing, sports textile, foundation garments, pads for swimwear, buffer clothing, medical textile etc. It does possess good recovery to compression, high bulk with relatively lightweight and very good moisture permeability. Almost in all applications, spacer fabrics are compressed by different parts of human body. Body parts have different shapes and curvatures. In all standard methods, spacer fabric compressibility is measured by a pair of flat circular plate which cannot represent a human body. The contour of body can be assumed as cylindrical with varying radius of curvature. So, it is necessary to understand the mechanism of compression of spacer fabric with cylindrical surface in order to understand the performance of the fabric under real-world dynamics. In this research, an effort is being made to predict the compression behaviour of warp-knitted spacer fabric by flat as well as cylindrical surface. Finite Element Models were designed on Abaqus/CAE platform to meet above requirement with variable circumstances. Experimental setup was also made to analyse cylindrical and flat compression at different circumstances. Results show that flat compression and cylindrical compression are largely deferred in terms of shape of load-deformation curve and compressional energy. Effect of variables on compression behaviour was also analysed. Model results were validated with experimental values. It is found that the proposed model has got a good agreement with the experimental results.

scholarly journals An Experimental Study Of The Compression Properties Of Polyurethane-Based Warp-Knitted Spacer Fabric Composites

2017 ◽  
Vol 17 (3) ◽  
pp. 199-205 ◽  
Author(s):  
Si Chen ◽  
Xue-pei Zhang ◽  
Hong-xia Chen ◽  
Xiao-ping Gao
Keyword(s):  
Energy Absorption ◽  
Inclination Angle ◽  
Stress Level ◽  
Layer Structure ◽  
Structural Parameters ◽  
Fabric Thickness ◽  
Compression Properties ◽  
Spacer Fabric ◽  
Fabric Composites ◽  
Spacer Fabrics

AbstractThe present work has reported the compression properties of polyurethane-based warp-knitted spacer fabric composites (PWSF). In order to investigate the effect of structural parameters of fabric on the compression performance of composites, a series of warp-knitted spacer fabrics (WSF) with different structural parameters including spacer yarn inclination angle, thickness, fineness of spacer yarns, and outer layer structure have been involved. The produced composites have been characterized for compression properties. The energy-absorption performance during the compression process has been determined as a function of the efficiency and the compression stress obtained from compression tests. The results show that the composites based on spacer fabrics having smaller spacer yarns inclination angle, higher fabric thickness, finer spacer yarn, and larger mesh in outer layers perform better with respect to energy-absorption properties at lower stress level, whereas at higher stress level, the best energy-absorption abilities are obtained in case of spacer fabrics constructed of larger spacer yarn inclination angle, lower fabric thickness, coarser spacer yarn, and smaller mesh in surface layers.

Study on Structure and Mechanical Properties of Spacer Fabric

2011 ◽  
Vol 332-334 ◽  
pp. 1093-1096
Author(s):  
Xiao Liu ◽  
Zhao Qun Du ◽  
Wei Dong Yu
Keyword(s):  
Mechanical Properties ◽  
Tensile Properties ◽  
Sandwich Structures ◽  
Experimental Results ◽  
Spacer Fabric ◽  
Spacer Fabrics ◽  
The Relationship

3D spacer fabrics have obviously better performance compared with ordinary fabrics due to their special "sandwich" structures. The paper is to investigate the structures and their compression performances, tensile properties and bending performances on 20 kinds of 3D spacer fabrics. The experimental results showed the relationship between mechanical properties and structures of spacer fabric, and obtained the correlation between each mechanics index and fabric, stiffness. It is useful in expressing the special behaviors of spacer fabrics.

Spacer fabric-based exuding wound dressing – Part I: Structural design, fabrication and property evaluation of spacer fabrics

2016 ◽  
Vol 87 (12) ◽  
pp. 1469-1480 ◽  
Author(s):  
Yadie Yang ◽  
Hong Hu
Keyword(s):  
Structural Design ◽  
Wound Dressing ◽  
Air Permeability ◽  
Fabric Structure ◽  
Property Evaluation ◽  
Spacer Fabric ◽  
Water Vapor Transmission ◽  
Different Types ◽  
New Type ◽  
Spacer Fabrics

Exuding wound dressing is used to help wound healing. Currently, commercial dressings for heavily exuding wounds still have some drawbacks, such as poor integrity, poor air permeability, low water vapor transmission, and the need for a secondary dressing on the top. To overcome these drawbacks, a new type of wound dressing based on the three-layer spacer fabric structure is proposed in this study. The study includes two parts. The first part focuses on the design, fabrication, and property evaluation of spacer fabrics that can be used for wound dressing. Twelve different types of spacer fabrics were first fabricated. Then, different properties, including wettability, absorbency, permeability, and thermal insulation, were tested and evaluated. A statistical analysis was also conducted to evaluate the effects of structural and yarn parameters on the properties of the spacer fabrics. Based on the testing results, two suitable spacer fabrics were finally selected as the basis for wound dressing material. It is expected that this study could promote the application of spacer fabrics in the medical area.

Flat-knitted innovative three-dimensional spacer fabrics: a competitive solution for lightweight composite applications

2011 ◽  
Vol 82 (3) ◽  
pp. 288-298 ◽  
Author(s):  
MD Abounaim ◽  
Chokri Cherif
Keyword(s):  
Mechanical Properties ◽  
Sensor Networks ◽  
Health Monitoring ◽  
Complex Shape ◽  
Three Dimensional ◽  
Surface Layers ◽  
Fabric Structure ◽  
Spacer Fabric ◽  
Processing Step ◽  
Spacer Fabrics

Flat-knitted spacer fabrics offer a strong potential for complex shape preforms, which could be used to manufacture composites with reduced waste and shorter production times. A reinforced spacer fabric made of individual surface layers and joined with connecting layers shows improved mechanical properties for lightweight applications, such as textile-based sandwich preforms. We report the development of flat-knitted multi-layered innovative three-dimensional (3D) spacer fabrics from hybrid yarns consisting of glass and polypropylene filaments. Moreover, for structural health monitoring of composites, sensor networks could be created into a 3D spacer fabric structure in a single processing step through innovative integration of functional yarns.

scholarly journals Mechanical Properties Of 3D-Structure Composites Based On Warp-Knitted Spacer Fabrics

2015 ◽  
Vol 15 (2) ◽  
pp. 127-137 ◽  
Author(s):  
Si Chen ◽  
Hai-ru Long ◽  
Ying-hao Liu ◽  
Feng-chao Hu
Keyword(s):  
Mechanical Properties ◽  
Mechanical Performance ◽  
Layer Structure ◽  
Structural Parameters ◽  
3D Structure ◽  
Three Dimension ◽  
Different Types ◽  
Spacer Fabrics ◽  
Flexible Polyurethane ◽  
The Impact

Abstract In this paper, the mechanical properties (compression and impact behaviours) of three-dimension structure (3D-structure) composites based on warp-knitted spacer fabrics have been thoroughly investigated. In order to discuss the effect of fabric structural parameters on the mechanical performance of composites, six different types of warp-knitted spacer fabrics having different structural parameters (such as outer layer structure, diameter of spacer yarn, spacer yarn inclination angle and thickness) were involved for comparison study. The 3D-structure composites were fabricated based on a flexible polyurethane foam. The produced composites were characterised for compression and impact properties. The findings obtained indicate that the fabric structural parameters have strong influence on the compression and impact responses of 3D-structure composites. Additionally, the impact test carried out on the 3D-structure composites shows that the impact loads do not affect the integrity of composite structure. All the results reveal that the product exhibits promising mechanical performance and its service life can be sustained.

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