A curable organopolysiloxane composition is provided. The composition can be easily processed into a film shape and has a high specific dielectric constant, high dielectric breakdown strength, and a low Young's modulus, allowing for a high energy density to be achieved, in addition to having excellent mechanical strength when used as a dielectric layer in a transducer. A fluoroalkyl group-containing curable organopolysiloxane composition, which can be cured by an addition reaction, comprises: an organopolysiloxane containing an alkenyl group and a fluoroalkyl group; an organohydrogen polysiloxane having SiH at both terminals of a molecular chain but not having a fluoroalkyl group; and a linear fluoroalkyl group-containing organohydrogen polysiloxane or a branched fluoroalkyl group-containing organohydrogen polysiloxane having T units.

A curable organopolysiloxane composition is provided. The composition can be easily processed into a film shape and has a high specific dielectric constant, high dielectric breakdown strength, and a low Young's modulus, allowing for a high energy density to be achieved, in addition to having excellent mechanical strength when used as a dielectric layer in a transducer. A fluoroalkyl group-containing curable organopolysiloxane composition, which can be cured by an addition reaction, comprises: an organopolysiloxane containing an alkenyl group and a fluoroalkyl group; an organohydrogen polysiloxane having SiH at both terminals of a molecular chain but not having a fluoroalkyl group; and a linear fluoroalkyl group-containing organohydrogen polysiloxane or a branched fluoroalkyl group-containing organohydrogen polysiloxane having T units.

This invention provides a scrollable and foldable transparent polysiloxane film and its preparation and self-healing method. 2-Hydroxyethyl disulfide, diisocyanate and alkane chloride were mixed and reacted to get disulfide-containing diisocyanate. α,ω-Aminopropyl terminated polydimethylsiloxane, diisocyanate and alkane chloride were mixed and reacted get linear chain-extended polydimethylsiloxane. Linear chain-extended polydimethylsiloxane, multi-amino terminated hyperbranched polysiloxane, disulfide-containing diisocyanate and alkane chloride were mixed and poured into a mould. After drying, the scrollable and foldable transparent polysiloxane film was obtained. The polysiloxane film described in this invention are constructed by dynamic physical crosslinking induced by hydrogen bond and permanent chemical crosslinking generated by hyperbranched polysiloxane. Hence, the polysiloxane film achieves both high stiffness and toughness. The good self-healing behavior of the polysiloxane films is originated from the temperature controlled dissociation of hydrogen bonds and exchange reaction rate of disulfide bonds.

This invention provides a scrollable and foldable transparent polysiloxane film and its preparation and self-healing method. 2-Hydroxyethyl disulfide, diisocyanate and alkane chloride were mixed and reacted to get disulfide-containing diisocyanate. α,ω-Aminopropyl terminated polydimethylsiloxane, diisocyanate and alkane chloride were mixed and reacted get linear chain-extended polydimethylsiloxane. Linear chain-extended polydimethylsiloxane, multi-amino terminated hyperbranched polysiloxane, disulfide-containing diisocyanate and alkane chloride were mixed and poured into a mould. After drying, the scrollable and foldable transparent polysiloxane film was obtained. The polysiloxane film described in this invention are constructed by dynamic physical crosslinking induced by hydrogen bond and permanent chemical crosslinking generated by hyperbranched polysiloxane. Hence, the polysiloxane film achieves both high stiffness and toughness. The good self-healing behavior of the polysiloxane films is originated from the temperature controlled dissociation of hydrogen bonds and exchange reaction rate of disulfide bonds.

This invention provides a scrollable and foldable transparent polysiloxane film and its preparation and self-healing method. 2-Hydroxyethyl disulfide, diisocyanate and alkane chloride were mixed and reacted to get disulfide-containing diisocyanate. α,ω-Aminopropyl terminated polydimethylsiloxane, diisocyanate and alkane chloride were mixed and reacted get linear chain-extended polydimethylsiloxane. Linear chain-extended polydimethylsiloxane, multi-amino terminated hyperbranched polysiloxane, disulfide-containing diisocyanate and alkane chloride were mixed and poured into a mould. After drying, the scrollable and foldable transparent polysiloxane film was obtained. The polysiloxane film described in this invention are constructed by dynamic physical crosslinking induced by hydrogen bond and permanent chemical crosslinking generated by hyperbranched polysiloxane. Hence, the polysiloxane film achieves both high stiffness and toughness. The good self-healing behavior of the polysiloxane films is originated from the temperature controlled dissociation of hydrogen bonds and exchange reaction rate of disulfide bonds.

Disclosed is a transparent organopolysiloxane composition consisting of a powdery silicone resin having the following general formula (1), a carboxylic acid compound or a natural oil containing the carboxylic acid compound, and an aprotic solvent.

##STR00001##

(wherein R.sup.1 each independently represents a substituted or unsubstituted divalent hydrocarbon group having 1 to 20 carbon atoms which may contain a hetero atom, R.sup.2 each independently represents a hydrogen atom, a methyl group, or an ethyl group, and a represents an integer of 2 to 70).

Disclosed is a transparent organopolysiloxane composition consisting of a powdery silicone resin having the following general formula (1), a carboxylic acid compound or a natural oil containing the carboxylic acid compound, and an aprotic solvent.

##STR00001##

(wherein R.sup.1 each independently represents a substituted or unsubstituted divalent hydrocarbon group having 1 to 20 carbon atoms which may contain a hetero atom, R.sup.2 each independently represents a hydrogen atom, a methyl group, or an ethyl group, and a represents an integer of 2 to 70).

A surface treating composition is shown and described herein. The surface treating composition is an aqueous composition comprising a polymer resin and an aminosilicone material. The polymer resin and the aminosilicone material may be provided as emulsions. The present compositions employing the aminosilicone may exhibit enhanced slip, hydrophobicity, and/or oleophobicity.

A surface treating composition is shown and described herein. The surface treating composition is an aqueous composition comprising a polymer resin and an aminosilicone material. The polymer resin and the aminosilicone material may be provided as emulsions. The present compositions employing the aminosilicone may exhibit enhanced slip, hydrophobicity, and/or oleophobicity.

The present invention provides new impact protection materials and the method of making the same. More specifically, the impact protection materials are polymer-based shear-thickening composite comprising a non-shear-thickening polymer matrix material and one or more shear-thickening materials. Preferably, the non-shear-thickening polymer matrix material is in an amount from approximately 5 weight percent to approximately 90 weight percent with the balance being one or more shear-thickening materials. The first type of the one or more shear-thickening materials is sol-gel based shear-thickening material in which small inorganic particles are connected in a gel network; the second type is polymer-based shear-thickening material in which polymer chains form network. Compared to the existing shear-thickening materials, the present shear-thickening materials have different molecular structure and formulation and possess properties of good impact protection and good stability.