Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

The natural “coat” for a stronger outfit.

05.07.2013
A report on the tensile and tearing strength of natural rubber latex (NRL) high strength coated fabrics.

Coated fabrics have been used in many applications such as agriculture, geotextiles, building and construction, medical, filtration and protective clothing. Coating of fabrics involves applying viscous liquid on the surface of the substrate before undergoing drying or curing process.

In a study conducted at University Teknologi MARA, Malaysia, researchers prepared a report on the tensile and tearing strength of natural rubber latex (NRL) high strength coated fabrics. 29 Plain woven Kevlar fabrics were coated with pre-vulcanised NRL using single-dip(SD), double-dip(DD) and triple-dip(TD) coating methods.

Both the tensile and tearing strength tests were done according to American Standard for Testing and Material (ASTM) using Testometric Tensile Tester and observations were made on their modes of failure.

In addition, a Field Emission Scanning Electron Microscopy (FESEM) was also done in order to observe the bonding between fibre and NRL. The NRL coated fabrics showed higher tensile and tearing strength in comparison with the uncoated fabrics.

The tensile strength for the SD-, DD- and TD-coated fabrics were 12%, 8% and 10% higher than the uncoated fabrics respectively. Similarly, the tearing strength for SD-, DD- and TD-coated fabrics were 9%, 12% and 18% higher than the uncoated fabric.

Overall, it was shown that the tensile and tearing strength of NRL coated fabrics was higher than uncoated fabric. A follow-up study was done using unidirectional fabrics, nano fillers and fabric stitching under the same group and reported that NRL coated fabrics still gives higher puncture resistance in comparisons with uncoated fabrics.

There were significant differences between the uncoated and NRL coated fabric. After each coating, the fabric’s real density and thickness increased. The NRL film on the fabric surface restricts the yarn’s freedom of movement under loading.

The energy absorption and elongation of the NRL coated fabric also increases as NRL layer helps absorbs the energy and increases the strength values before the fabric completely fails by breaking or tearing. It also assists the yarns to bunch together and resist the propagation of tear or break by sharing the load with a greater number of yarns before the fabric is completely failed.

Additionally, this research found that coating with NRL increase the energy absorption and the elasticity characteristics of the coated fabrics and prevents severe damage during loading. Therefore, the use of NRL as a coating element combined with high strength woven fabric such as Kevlar improves the fabric tensile and tearing strength.

In the future, the use of synthetic rubber may replace NRL to maximize the apprehension of coated fabric for ballistic impact penetration resistance.

Contact Information:
Nur Awatif Ahmad*,
Faculty of Applied Science,
Universiti Teknologi MARA, Malaysia.
rozitex@salam.uitm.edu.my

Darmarajah Nadarajah | Research asia research news
Further information:
http://www.uitm.edu.my
http://www.researchsea.com

More articles from Materials Sciences:

nachricht A new tool for discovering nanoporous materials
23.05.2017 | Ecole Polytechnique Fédérale de Lausanne

nachricht Did you know that packaging is becoming intelligent through flash systems?
23.05.2017 | Heraeus Noblelight GmbH

All articles from Materials Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: A quantum walk of photons

Physicists from the University of Würzburg are capable of generating identical looking single light particles at the push of a button. Two new studies now demonstrate the potential this method holds.

The quantum computer has fuelled the imagination of scientists for decades: It is based on fundamentally different phenomena than a conventional computer....

Im Focus: Turmoil in sluggish electrons’ existence

An international team of physicists has monitored the scattering behaviour of electrons in a non-conducting material in real-time. Their insights could be beneficial for radiotherapy.

We can refer to electrons in non-conducting materials as ‘sluggish’. Typically, they remain fixed in a location, deep inside an atomic composite. It is hence...

Im Focus: Wafer-thin Magnetic Materials Developed for Future Quantum Technologies

Two-dimensional magnetic structures are regarded as a promising material for new types of data storage, since the magnetic properties of individual molecular building blocks can be investigated and modified. For the first time, researchers have now produced a wafer-thin ferrimagnet, in which molecules with different magnetic centers arrange themselves on a gold surface to form a checkerboard pattern. Scientists at the Swiss Nanoscience Institute at the University of Basel and the Paul Scherrer Institute published their findings in the journal Nature Communications.

Ferrimagnets are composed of two centers which are magnetized at different strengths and point in opposing directions. Two-dimensional, quasi-flat ferrimagnets...

Im Focus: World's thinnest hologram paves path to new 3-D world

Nano-hologram paves way for integration of 3-D holography into everyday electronics

An Australian-Chinese research team has created the world's thinnest hologram, paving the way towards the integration of 3D holography into everyday...

Im Focus: Using graphene to create quantum bits

In the race to produce a quantum computer, a number of projects are seeking a way to create quantum bits -- or qubits -- that are stable, meaning they are not much affected by changes in their environment. This normally needs highly nonlinear non-dissipative elements capable of functioning at very low temperatures.

In pursuit of this goal, researchers at EPFL's Laboratory of Photonics and Quantum Measurements LPQM (STI/SB), have investigated a nonlinear graphene-based...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Marine Conservation: IASS Contributes to UN Ocean Conference in New York on 5-9 June

24.05.2017 | Event News

AWK Aachen Machine Tool Colloquium 2017: Internet of Production for Agile Enterprises

23.05.2017 | Event News

Dortmund MST Conference presents Individualized Healthcare Solutions with micro and nanotechnology

22.05.2017 | Event News

 
Latest News

Physicists discover mechanism behind granular capillary effect

24.05.2017 | Physics and Astronomy

Measured for the first time: Direction of light waves changed by quantum effect

24.05.2017 | Physics and Astronomy

Marine Conservation: IASS Contributes to UN Ocean Conference in New York on 5-9 June

24.05.2017 | Event News

VideoLinks
B2B-VideoLinks
More VideoLinks >>>