Silicone elastomer composition for artificial integument
View Patent ↗The present invention relates to a silicone elastomer composition for an artificial integument which satisfies the following formula: tan δ≧0.23−0.006 X wherein tan δ represents the loss tangent of a cured product of the aforementioned composition; and X represents the Asker C hardness of a cured product of the aforementioned composition. With the composition of the present invention, an artificial integument which has not only a similar outer appearance, but also a similar flexible feeling on touch to the skin, can be obtained by a simple process.
1. An artificial integument formed from a cured product of a hydrosilylation-curable silicone elastomer composition characterized by satisfying the following formula:
tan δ≧0.23−0.006 X
wherein tan δ represents the loss tangent of the artificial integument; and X represents the Asker C hardness of the artificial integument.
2. The artificial integument according to claim 1 , wherein in said formula, tan δ is 0.2 or more.
3. The artificial integument according to claim 1 , wherein the hydrosilylation-curable silicone elastomer composition comprises fine powder of a silica in an amount ranging from 5 to 30% by mass.
4. The artificial integument according to claim 3 , wherein said fine powder of a silica contains a wet silica in an amount of 10% by mass or more with respect to the amount of said fine powder.
5. The artificial integument according to claim 1 , wherein the hydrosilylation-curable silicone elastomer composition has a viscosity of not more than 20,000 mPa·s.
6. The artificial integument according to claim 1 , wherein the hydrosilylation-curable silicone elastomer composition is curable by a hydrosilylation reaction and curable at room temperature.
7. The artificial integument according to claim 6 , wherein the hydrosilylation-curable silicone elastomer composition comprises a siloxane containing an alkenyl group.
8. The artificial integument according to claim 1 , wherein the artificial integument has a tensile strength of not less than 0.3 MPa.
9. A model or robot equipped with the artificial integument as recited in claim 1 .
10. The artificial integument according to claim 1 , wherein in said formula, X is a positive number of 20 or less.
11. The artificial integument according to claim 2 , wherein in said formula, X is a positive number of 20 or less.
12. The artificial integument according to claim 1 , wherein the artificial integument has an elongation of not less than 420%.
13. The artificial integument according to claim 8 , wherein the artificial integument has an elongation of not less than 420%.