Polymer compositions, materials, and methods of making
AssigneeSaint-Gobain Performance Plastics Corporation
InventorsMatthew Gacek, Jeffrey H. Peet, Florence Py
Life of this patent
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Abstract
A polymer material including a fluorinated component and a silicone component can exhibit improved performance, such as increased thermal stability. An article can include the polymer material. For example, a coated fabric including the polymer material can exhibit improved dielectric strength. A composition for forming the polymer material can include a dispersion comprising a fluorinated component and an emulsion comprising a reactive silicone component. In an embodiment, a single pass film formed from the composition can have an increased critical crack thickness. A method can include forming a polymer material from the composition.
Claims14
A composition comprising:
- a dispersion comprising a fluoropolymer component;
- an emulsion comprising a silicone component;
- and
- rigid particles having a Young's Modulus greater than that of particles of the silicone component,
- wherein the rigid particles comprise a fluoropolymer, an alumina, a nanoparticulate silicone, or an combination thereof,
- wherein the rigid particles have a diameter in a range of 10 nm to 150 nm,
- wherein the fluoropolymer component comprises a plurality of fluoropolymer particles having an average particle diameter D,
- wherein D is at most 300 nm and at least 150 nm, and
- wherein a single pass film formed from the composition has a critical crack thickness (CCT) of at least 1.25×10−5×D2.5, where CCT is in microns and D is in nanometers.
A composition comprising:
- a dispersion comprising a fluoropolymer component;
- an emulsion comprising a reactive silicone component;
- and
- rigid particles having a Young's Modulus greater than that of particles of the silicone component,
- wherein the rigid particles comprise a fluoropolymer, an alumina, a nanoparticulate silicone, or any combination thereof,
- wherein the rigid particles have a diameter in a range of 10 nm to 150 nm,
- wherein the fluoropolymer component comprises a plurality of fluoropolymer particles having an average particle diameter D,
- wherein D is at most 300 nm and at least 150 nm, and
- wherein a single pass film formed from the composition has a critical crack thickness (CCT) of at least 1.25×10−5×D2.5, where CCT is in microns and D is in nanometers.
A method of making a polymer material, comprising:
- providing a dispersion comprising a fluorinated component;
- providing an emulsion comprising a reactive silicone component;
- providing rigid particles having a Young's Modulus greater than that of particles of the silicone component,
- mixing the dispersion, the emulsion and the rigid particles to form a composition;
- and
- drying the composition to form the polymer material,
- wherein the rigid particles comprise a fluoropolymer, an alumina, a nanoparticulate silicone, or any combination thereof,
- wherein the rigid particles have a diameter in a range of 10 nm to 150 nm, and
- wherein the fluoropolymer component comprises a plurality of fluoropolymer particles having an average particle diameter D,
- wherein D is at most 300 nm and at least 150 nm.
Dependencies are inferred from the claim text.