IADR Abstract Archives
Analyzing RTV Silicone Tear Strength with Varying Titanium Dioxide Fillers
Objectives: This study aims to determine the influence of titanium dioxide as filler on the tear strength of Room-Temperature Vulcanizing (RTV) silicone at different percentage.
Methods: This in vitro study consisted of a control group and five study groups at different percentage (1%, 2%, 3%, 4% and 5%) of titanium dioxide by weight (w/w) mixed into the RTV silicone. A total of 30 angle samples were prepared for the tear test according to ISO 34-1 and tear strength was evaluated using the Universal Testing Machine (Schimadzu, Japan). Prior to testing, the thickness of each sample was measured three times using calliper and averaged. The testing speed of the jig was set for 500mm/min. The results of tear strength were recorded and analysed.
Results: Statistically significant difference in tear strength were found between different percentages of modified RTV silicone with titanium dioxide (p<0.05). Mann-Whitney U test noted difference between the 2%, 4%, 5% with the 3% group. The highest tear strength was recorded in the 3% group at median of 10.9N/cm whilst the lowest value was observed in the 5% group.
Conclusions: Titanium dioxide as a filler affects the tear strength of RTV silicone. Vulcanization with 3% of titanium dioxide by weight has improved the tear strength.
Methods: This in vitro study consisted of a control group and five study groups at different percentage (1%, 2%, 3%, 4% and 5%) of titanium dioxide by weight (w/w) mixed into the RTV silicone. A total of 30 angle samples were prepared for the tear test according to ISO 34-1 and tear strength was evaluated using the Universal Testing Machine (Schimadzu, Japan). Prior to testing, the thickness of each sample was measured three times using calliper and averaged. The testing speed of the jig was set for 500mm/min. The results of tear strength were recorded and analysed.
Results: Statistically significant difference in tear strength were found between different percentages of modified RTV silicone with titanium dioxide (p<0.05). Mann-Whitney U test noted difference between the 2%, 4%, 5% with the 3% group. The highest tear strength was recorded in the 3% group at median of 10.9N/cm whilst the lowest value was observed in the 5% group.
Conclusions: Titanium dioxide as a filler affects the tear strength of RTV silicone. Vulcanization with 3% of titanium dioxide by weight has improved the tear strength.
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