Dielectric elastomer material is a new type of smart materials that can be widely used in sensors and actuators. The electrostriction is a crucial characteristic of the dielectric elastomer

which is affected by its dielectric constant and elastic modulus. Silicone rubber has low dielectric elastic modulus and fast strain response

but its electrostriction is small. Based on this situation

the modified TiO

2

/silicone rubber dielectric elastomer composite material was prepared with silicone rubber as the matrix and KH550 modified TiO

2

as the filler

with its tensile properties

dielectric properties and electrostriction being tested. It is found that the addition of KH550 enables TiO

2

to be uniformly dispersed in the silicone rubber matrix. By changing the content of KH550 and TiO

2

added

the dielectric constant is increased

the dielectric loss is kept low

the elastic modulus is low

and the electrostriction is improved.