Fluoroelastomers for marking system components, including grafted fluorinated polymers
View Patent ↗A marking system surface material includes a fluoroelastomer including grafted fluorinated polymers. The fluoroelastomer is a perfluoropolyether-grafted fluoroelastomer formed using an alkoxy-terminated fluorosilicone component, and exhibiting high contact angle and low sliding angle.
1. A fluoropolymer composition, comprising:
a fluoroelastomer component; and
a perfluoropolyether component, the fluoroelastomer component being grafted to the perfluoropolyether component with an amino-functionalized alkoxy-terminated fluorosilicone component.
2. The composition of claim 1 , wherein in the fluoroelastomer is a terpolymer, the terpolymer being a peroxide curable terpolymer.
3. A method of forming a fluoroelastomer comprising grafted fluorinated polymers, the method comprising:
combining a first solution comprising a fluoroelastomer component and a second solution comprising an amino-functionalized fluorosilicone crosslinker component including a perfluoropolyether component, the fluoroelastomer component being grafted to the perfluoropolyether component with an amino-functionalized alkoxy-terminated fluorosilicone component.
4. The method of claim 3 , the first solution being formed by preparing a surfactant mixture of fluorosurfactants and combining the mixture with the fluoroelastomer component.
5. The method of claim 4 , the first solution being a 17.5% solution of fluoroelastomer in MIBK.
6. The method of claim 3 , the second solution being formed by mixing the crosslinker and the perfluoropolyether component in a 1.5 to 1 mol ratio, respectively.
7. The method of claim 3 , the combining further comprising adding the second solution to the first solution dropwise.
8. The method of claim 3 , comprising:
combining the mixture of the first solution and the second solution with MgO, CaO, or a mixture thereof.
9. The method of claim 8 , comprising mixing the combined first and second solution and MgO, CaO, or mixture thereof.
10. The method of claim 9 , the mixing being performed over 5 minutes at 23 degrees Celsius to form a mixed solution.
11. The method of claim 10 , comprising:
pouring the solution.
12. The method of claim 11 , wherein the solution is poured onto a marking system surface.
13. The method of claim 10 , comprising:
outgassing the mixed solution at 23 degrees Celsius overnight; and curing the mixed solution at 218 degrees Celsius thereafter.
14. An ink-based digital printing system, comprising:
an imaging member having a reimageable surface layer, the surface layer comprising a fluoroelastomer component and a perfluoropolyether component, the fluoroelastomer component being grafted to the perfluoropolyether component with an amino-funetionalized alkoxy-terminated fluorosilicone component;
a dampening fluid metering system, the dampening fluid metering system being configured to apply dampening fluid onto the reimageable surface;
a dampening fluid patterning system, the dampening fluid patterning system being configured to form a pattern in the applied dampening fluid; and
an inking system, the inking system being configured to apply ink to the imaging member surface, the surface having the patterned dampening fluid disposed thereon.