Effect of modified silica treatment on mechanical properties of composites

In order to study the effect of silica on the mechanical properties of woven spacer fabric composites, the composites were prepared by adding different mass fraction of modified silica into epoxy resin. The effect of silica content on the mechanical properties of the composites was discussed by testing the compressive and flexural properties of the composites. The results are as follows: with the increase of silica content, the mechanical properties increase first and then decrease. When the content of modified silica is 8%, the flat compression load is 578. The bending load and the interlaminar shear strength are 246.842 N and 0.0918 MPa. Compared with the composite material without the modified silica, the composite material with the modified silica is improved by 68.2%, 195.1% and 176.3% respectively. At this time, the mechanical properties of the composites reach to the best.