Flux formulations
View Patent ↗Flux formulations that remain pliable and tack-free after deposition are disclosed. In certain examples, the flux comprises a first component and an effective amount of a second component to provide a pliable flux after deposition. The flux may also include activators, plasticizers, surface active agents and other components.
1. A photovoltaic ribbon pre-coated with a pliable flux, the flux comprising:
a) a first component, wherein the first component comprises an activated rosin adduct or a rosin ether;
b) an effective amount of a second component to provide pliability to the flux, wherein the second component comprises an oligomeric or polymeric component;
c) a third component present in an effective amount to reduce formation of chemical species on a substrate; and
d) a fourth component is a plasticizer; wherein the plasticizer is selected from the group consisting of phthalate-based plasticizers, adipate-based plasticizers, trimellitates, maleates, sebacates, benzoates, epoxidized vegetable oils, sulfonamides, organophosphates, glycols, polyethers and ethylene oxide-propylene oxide (EO/PO) copolymers.
2. The photovoltaic ribbon of claim 1 , wherein the second component comprises a polyamide, an acrylic, an ethylene acrylic co-polymer, or a mixture thereof.
3. The photovoltaic ribbon of claim 1 , in which the third component is an activator.
4. The photovoltaic ribbon of claim 1 , wherein the fourth component is present in an effective amount to render the flux soft prior to or after deposition on the substrate.
5. The photovoltaic ribbon of claim 1 , in which an amount of the first component and an amount of the second component are independently selected to provide an adherent flux.
6. The photovoltaic ribbon of claim 1 , wherein the flux further comprises one or more of a reactive diluent, a colorant, a photosensitive material, a binder, and a surface active agent.
7. The photovoltaic ribbon of claim 1 , wherein the flux is substantially tack-free upon drying.
8. An electrical component pre-coated with a pliable flux, the flux comprising:
a) a first component, wherein the first component comprises an activated rosin adduct or a rosin ether;
b) an effective amount of a second component to provide pliability to the flux, wherein the second component comprises an oligomeric or polymeric component;
c) a third component present in an effective amount to reduce formation of chemical species on a substrate; and
d) a fourth component is a plasticizer; wherein the plasticizer is selected from the group consisting of phthalate-based plasticizers, adipate-based plasticizers, trimellitates, maleates, sebacates, benzoates, epoxidized vegetable oils, sulfonamides, organophosphates, glycols, polyethers and ethylene oxide-propylene oxide (EO/PO) copolymers.
9. The electrical component of claim 8 , wherein the second component comprises a polyamide, an acrylic, an ethylene acrylic co-polymer, or a mixture thereof.
10. The electrical component of claim 8 , wherein the fourth component is present in an effective amount to render the flux soft prior to or after deposition on the substrate.
11. The electrical component of claim 8 , wherein the flux further comprises one or more of a reactive diluent, a colorant, a photosensitive material, a binder, and a surface active agent.
12. The electrical component of claim 8 , wherein the flux is substantially tack-free upon drying.
13. The electrical component of claim 8 , in which an amount of the first component and an amount of the second component are independently selected to provide an adherent flux.
14. The photovoltaic ribbon of claim 3 , wherein the activator is a carboxylic acid, sulfonic acid, phosphonic acid, phosphate ester, amino acid, alkanolamine, halide bearing compound, and combinations thereof.