Low Velocity Impact and Creep-Strain Behaviour of Vinyl Ester Matrix Nanocomposites Based on Layered Silicate

Table 4

The strain amount of the neat vinyl ester and the corresponding nanocomposites during the creep test at different interval times and temperatures.

Sample	Initial strain (%)		Strain at 40 hours (%)		Strain at 60 hours (%)		Strain at 80 hours (%)		Strain at 95 hours (%)
	25°C	60°C	25°C	60°C	25°C	60°C	25°C	60°C	25°C	60°C
Neat vinyl ester	23	17	25	21	26	22	26	22	26.3	22.5
Vinyl ester + 2 wt.% clay	17	13	17.2	13.2	17.3	13.3	17.5	13.4	18	13.6
Vinyl ester + 4 wt.% clay	14	12	14.2	12	14.4	12.1	14.6	12.2	15	12.4