A silicone rubber sponge composition, including: (A) 100 parts by mass of an addition-crosslinkable silicone rubber composition containing a reinforcing silica and being liquid at 25° C.; (B) 1.0 to 20 parts by mass of expanded resin fine particles having a specific gravity of 0.01 to 0.3, having an average particle diameter of 10 to 200 μm, and having an organic resin shell; and (C) 0.1 to 10 parts by mass of spherical particles having average particle diameter being 0.001 to 0.5 times larger than average particle diameter of the component (B) expanded resin fine particles, and having an average circularity of 0.8 to 1. This improves flowability of silicone rubber sponge composition containing the expanded resin fine particles, reduces contractive deformation due to pressure of the expanded resin fine particles during casting or injection-molding. Thus, provided are a silicone rubber sponge composition that can reduce density of a sponge rubber.

One of the purposes of the present invention is to provide silicone fine particles which do not aggregate in a thermosetting resin while having softness derived from silicone rubber and have excellent adhesion with the thermosetting resin. The other purpose is to provide a method for preparing the same. The other purpose is to provide a thermosetting resin composition and an encapsulating material, each comprising the fine particles. The present invention provides an epoxy-modified silicone fine particle composed of (A) a spherical silicone rubber fine particle coated with (B) polyorganosilsesquioxane, wherein the spherical silicone rubber fine particle (A) has an average particle diameter of 0.1 to 100 μm and the polyorganosilsesquioxane (B) has an epoxy group-containing organic group.

The present invention describes various methods for manufacturing gel composite sheets using segmented fiber or foam reinforcements and gel precursors. Additionally, rigid panels manufactured from the resulting gel composites are also described. The gel composites are relatively flexible enough to be wound and when unwound, can be stretched flat and made into rigid panels using adhesives.

Particles P and methods of making the same. The particles P are composed of a core K comprising crosslinked silicone elastomer composition X and of a shell H of silica S. Where the core K includes a reinforcing filler F which is selected from pyrogenic or precipitated hydrophobic silicas having DIN 66131 BET surface areas of at least 50 m.sup.2/g and also from carbon blacks and activated carbons and silicone resins.

In a heat-shielding film formed of addition-curing silicone resin containing organopolysiloxane, organopolysiloxane includes the combination of a plurality of units including at least a R.sup.1SiO.sub.3/2 unit (a T unit), a R.sup.2R.sup.3SiO.sub.2/2 unit (a D unit), and a R.sup.4R.sup.5R.sup.6SiO.sub.1/2 unit (a M unit) (in each unit, R.sup.1 to R.sup.6 is aliphatic hydrocarbon or hydrogen), and the molar ratio of the T unit, the D unit, and the M unit among all structural units is T:33.3 mol % to 71.4 mol %, D:11.1 mol % to 42.9 mol %, and M:7.0 mol % to 42.9 mol %.

A soft structure fiber reinforcement and actuation technology is provided. In an example embodiment, the tendon-driven, fiber-reinforced elastomer membrane comprises an elastomer matrix material and a fiber array embedded within the elastomer matrix material. The one or more tendons are not mechanically bonded to the elastomer matrix material, such that the one or more embedded tendons are able to move through the elastomer matrix material. One or more apparatuses may employ one or more such tendon-driven, fiber-reinforced elastomer membranes for use in a variety of applications.

A method for producing a thermally conductive sheet S includes a step of obtaining a thermally conductive composition by mixing a reactive liquid resin, which forms a rubbery or gelatinous matrix when crosslinked, a volatile liquid having a boiling point 10° C. or more higher than a curing temperature of the reactive liquid resin, and a thermally conductive filler; a step of forming a molded body by crosslinking and curing the reactive liquid resin at a temperature 10° C. or more lower than the boiling point of the volatile liquid; and a step of evaporating the volatile liquid by heating the molded body, in which these steps are performed sequentially.

The invention described herein generally pertains to a composition that includes a silyl-terminated polymer having silyl groups linked to a polymer backbone via triazole. The silyl-terminated polymer is a reaction product of a functionalized polymer backbone and a functionalized silane. The polymer backbone includes a first functional group, which may be one of an azide or an alkyne. The functionalized silane includes a second functional group may also be one of an azide or an alkyne, but is also different from the first functional group. The functionalized polymer backbone is reacted with the functionalized silane in the presence of a metal catalyst.

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:

[00001]$E={\alpha \left(\frac{Y}{{\epsilon }_0{\epsilon }_r}\right)}^{0.5}$

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, ε.sub.γ is a specific dielectric constant and is 100 or less, and ε.sub.0 represents the dielectric constant of vacuum.

The present invention relates to a method for modifying the surface of a polymer substrate. Specifically, the present invention provides a method for modifying the surface of a polymer substrate using a plasma treatment, a hydrophilic primer and a coating agent including a hydrophobic fluorine compound.