Abstract
RTV silicone MDX 4-4210 unmodified and modified with the addition of 5%, 10%, and 15% 360 MF 100cs was tested for the following physical properties: tensile strength, ultimate elongation (ASTM D412 die C), tear resistance (ASTM D624, die C), and Shore A Durometer hardness (ASTM D2240). The initial mechanical properties of unmodified RTV silicone were superior to those of RTV silicone modified with 5%, 10%, and 15% 360 MF except for hardness. The value for each property measured was found to decrease linearly with the amount of 360 MF added. If additional softness is desired, it can be achieved with the addition of 360 MF to RTV silicone at the expense of decreased strength, elongation, and tear resistance. Even with the addition of 15% 360 MF the values for tear resistance and elongation were in the standard range. The tensile strength of unmodified RTV silicone fell below the accepted values.
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