摘要:
A silicone composition is provided which comprises a room- temperature vulcanizable adhesive formulation which comprises at least one bis(trialkoxysilylalkyl)succinate, a vinyl-containing polydiorganosiloxane, a hydrogen-containing polysiloxane, and a catalytic amount of a hydrosilylation catalyst.
摘要:
A silicone composition is provided which comprises a room- temperature vulcanizable adhesive formulation which comprises at least one bis(trialkoxysilylalkyl)hydromuconate.
摘要:
Anti-fouling coatings comprise a room temperature vulcanizable polyorganosiloxane composition and a polyorganosiloxane free from silanol groups and comprising at least one hydroxy- or alkoxy-terminated polyoxyalkylenealkyl radical. The latter is capable of blooming to the surface of the cured room temperature vulcanizable composition, thus inhibiting the deposition of marine life on the coated article.
摘要:
Room temperature vulcanizable coating compositions, useful as anti-fouling coatings for marine structures such as ships, are prepared by a method comprising the steps of first blending a particulate reinforcing filler such as silica with a non-reactive polyorganosiloxane oil under high shear conditions, and subsequently combining the resulting masterbatch with at least one reactive polyorganosiloxane having a relatively low viscosity, a condensation catalyst and a crosslinking agent. The resulting compositions are sprayable in the absence of solvents, although solvents may be added if desired.
摘要:
Room temperature vulcanizable coating compositions, useful as anti-fouling coatings for marine structures such as ships, are prepared by a method comprising the steps of first blending a particulate reinforcing filler such as silica with a non-reactive polyorganosiloxane oil under high shear conditions, and subsequently combining the resulting masterbatch with at least one reactive polyorganosiloxane having a relatively low viscosity, a condensation catalyst and a crosslinking agent. The resulting compositions are sprayable in the absence of solvents, although solvents may be added if desired.
摘要:
Epoxy containing organic silicon materials, such as epoxy methylsiloxanes, have been found to be useful as anchorage additives for heat curable solventless addition cured paper release compositions resulting from platinum catalyzed hydrosilation of alkenyl siloxanes and silicon hydride siloxanes.
摘要:
An article (100) comprises a textured surface (120) disposed on a substrate (110). The surface (120) has an effective liquid wettability sufficient to generate, with a reference liquid (230), a contact angle (140) in a range from about 120° to about 180°. The surface (120) comprises a material having a nominal liquid wettability sufficient to generate, with the reference liquid (230), a nominal contact angle (240) in a range from about 60° to about 90°, the material comprising at least one material selected from the group consisting of a polymer and a ceramic. The properties of the surface (120) may include low-drag or low-friction, self-cleaning capability, and resistance to icing, fouling, and fogging, and the like. Methods of making such a surface (120) are also described.
摘要:
Articles resistant to wetting by impinging droplets of liquid are presented, as well as a method for resisting wetting of an article by impinging droplets of liquid. For example, an article (300) comprises a surface portion (320) oriented to intercept droplets (310) of a liquid impinging upon the article (300). This surface portion (320) comprises a plurality of surface features (330), wherein the plurality of surface features (330) has a median size, a , a median depth, h , and a median spacing, b . The parameters a , b , and h are selected to generate, in response to a droplet of the liquid impinging upon the surface portion (320) at a relative velocity v , a back pressure that is greater than a Bernoulli pressure generated by the drop upon impact on the surface portion (320). The method comprises providing a surface portion (320) oriented to intercept incoming droplets (310) of a liquid, the surface portion (320) comprising a plurality of features (330) so disposed on the surface to generate, in response to a drop of liquid impinging upon the surface portion (320) at a relative velocity of at least 5 m/s, a back pressure that is greater than a Bernoulli pressure generated by the drop upon impact on the surface portion (320); and exposing the surface portion (320) to droplets (310) of liquid moving at a velocity of at least about 5 m/s relative to the surface portion (320) so that the droplets (310) impinge upon the surface portion (320).