Page 12 - COS-FOD2015

Ismail et al.

Sample Type/brand

1 Cross Protection Powder Free Latex Examination Gloves

2 Rainbow Dental Dam Powder Free (Medium Gauge)
3 Rainbow Dental Dam Powder Free (Heavy Gauge)

4 Cross Protection Powdered Latex Examination Gloves
5 Discovery 2020 Powder Free Latex Examination Gloves

The types and brands of the gloves and rubber such as thickness (mm), width (mm) and gauge
dam used in this study include: length (mm) was inserted into the software.

Thirty five test pieces were prepared for each The sample was set in between two jigs with a
sample type. Each test piece is prepared as a gauge length 45mm and the calibration of the
dumb-bell shape (Figure. 1) using a slicing ma- machine was done using Vernier caliper. A uni-
chine with a continuous band blade. Each test form pressure was exerted across the width and
piece is made out of a size M gloves obtained surface area of the test piece. Test speed was
from the palm area. set at 500 mm/min for all samples.

When tensile loads are applied to rubber materi-
als, they elongate and their thickness decreases
to a breaking point. Values of force stroke,

stress stroke, stroke strain, maximum displace-
ment stress and stroke, maximum displace-
ment, maximum stress calculate at entire area,
maximum force calculate at entire area, maxi-
mum displacement strain, maximum displace-
Figure 1: Dumb-bell test piece.
ment time, maximum stroke calculate at entire
Width (D) and gauge length(C) were measured area, maximum stroke strain calculate at entire
using a metal ruler and recorded. For each type area, maximum displacement calculated at en-
of sample, thickness was measured using elec- tire area, maximum strain calculate at entire
tronic veneer caliper and recorded. area, maximum time calculated at entire area
and force 1 Newton were calculated using the
All tests for physical requirements were per- Trapezium X software. In this research, the
formed in accordance with ASTM D412, Stand- stress over strain relationship was used as a
ard Test Methods for Vulcanized Rubber and measure of tensile strength. Means and stand-
Thermoplastic Rubbers and Thermoplastic Elas- ard deviation were calculated, and data for max-
tomers-Tension [11]. For this research, the imum displacement (%), maximum forces (N),
Universal Testing Machine with Trapezium X maximum stress (N/mm or MPa) and maximum
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software was used. Relevant sample data

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