US 12,584,016 B2 · Curable elastomer composition, cured product of same, film provided with cured product, multilayer body provided with film, method for producing said multilayer body, electronic component and display device each comprising cured product, method for designing curable elastomer composition and method for designing transducer device

Abstract

Performance requirements of electroactive polymer materials used for transducer devices include dielectric breakdown strength, Young's modulus, dielectric constant, thickness, and electromechanical instability. There are correlation relationships therebetween but definitions of the correlation relationships have not been achieved. Therefore, it is necessary to search for an excellent material by trial and error, which requires a great deal of work. Disclosed herein is a curable elastomer composition that includes a compound having a high dielectric functional group. A cured product of the composition satisfies the following formula: E = α ⁡ ( Y ε 0 ⁢ ε r ) 0.5 where E is the dielectric breakdown strength in the range of 50 V/μm to 200 V/μm, α is a constant in the range of 0.4 to 0.9, Y is Young's modulus and is in the range of 0.001 MPa to 10 MPa, εγ is a specific dielectric constant and is 100 or less, and ε0 represents the dielectric constant of vacuum.

Claims20

Dependent claims

A curable elastomer composition, comprising a compound having a fluoroalkyl group, wherein a cured product of the curable elastomer composition satisfies the following formula:

E
=
α
⁡
(
Y
ε
0
⁢
ε
r
)
0.5
where E is the dielectric breakdown strength in the range of 50 V/μm to 200 V/μm measured using a rigid electrode, α is a constant in the range of 0.4 to 0.9, Y is Young's modulus and is in the range of 0.001 MPa to 10 MPa, εγ is a specific dielectric constant and is 100 or less, and ε0 represents the dielectric constant of vacuum;
wherein the curable elastomer composition comprises:
(A) an organopolysiloxane with a curing reactive group having at least two carbon-carbon double bonds in one molecule;
(B) an organohydrogenpolysiloxane having at least two silicon atom-bonded hydrogen atoms and a fluoroalkyl group in one molecule;
(C) a hydrosilylation reaction catalyst;
and
(F) a filler treated with a fluoroalkyl-substituted disilazane.

17 more elements

A curable elastomer composition, comprising a compound having a fluoroalkyl group, wherein a cured product of the curable elastomer composition satisfies the following formula:

E
=
α
⁡
(
Y
ε
0
⁢
ε
r
)
0.5
where E is the dielectric breakdown strength in the range of 50 V/μm to 200 V/μm measured using a rigid electrode, α is a constant in the range of 0.4 to 0.9, Y is Young's modulus and is in the range of 0.001 MPa to 10 MPa, εγ is a specific dielectric constant and is 100 or less, and ε0 represents the dielectric constant of vacuum;
wherein the curable elastomer composition comprises:
(a1-2) 3,3,3-trifluoropropylmethyl, dimethylsiloxane copolymer having two terminals blocked with vinyldimethylsiloxy groups;
(b3) a dimethylsiloxane/3,3,3-trifluoropropylmethylsiloxane/methylhydrogen siloxane copolymer having two terminals blocked with trimethylsiloxy groups;
(b4) a dimethylsiloxane/3,3,3-trifluoropropylmethylsiloxane copolymer having two terminals blocked with dimethylhydrosiloxy groups;
(c1) dimethyl siloxane polymer solution having two terminals blocked with a vinyldimethylsiloxy group of platinum-1,3-divinyl 1,1,3,3-tetramethyldisiloxane complex;
(e2) 1,3,5,7-tetramethyl-1,3,5,7-tetravinyl-cyclotetrasiloxane;
(f3) a first filler treated with 1,3-bis(3,3,3-trifluoropropyl)-1,1,3,3-tetramethyldisilazane and having a first specific surface area;
and
(f4) a second filler treated with 1,3-bis(3,3,3-trifluoropropyl)-1,1,3,3-tetramethyldisilazane and having a second specific surface area;
wherein the first specific surface area is greater than the second specific surface area.

21 more elements

Dependencies are inferred from the claim text.

Life of this patent

Life of this patent

Abstract

Claims20