Enhanced suffusion coated and laminated nylon fibers
Enhanced suffusion coated and laminated nylon fibers are described. The fibers are formed from a blend of an aliphatic nylon and a semiaromatic nylon that is subsequently suffused with carbon. The nylon blend demonstrates advantageous physical properties over typical nylons, and the carbon suffusion process unexpectedly improved these physical properties further.
1. A filament comprising:
a blend of an aliphatic nylon, a semiaromatic nylon, and optionally one or more additives, wherein the aliphatic nylon comprises about 70-95% by weight of the blend and the semiaromatic nylon comprises about 5-30% by weight of the blend, and
electrically conductive particles suffused into a surface of the filament.
2. The filament of claim 1 , wherein the aliphatic nylon is selected from Nylon 6, Nylon 66, copolymers rich in Nylon 6 or Nylon 66, and mixtures thereof.
3. The filament of claim 1 , wherein the semiaromatic nylon is selected from 6I/6T copolymer, 6T/6I copolymer, DT/DI copolymer, and a mixture thereof.
4. The filament of claim 3 , wherein semiaromatic nylon has a melt temperature that is lower than a melt temperature of the aliphatic nylon.
5. The filament of claim 1 , wherein the semiaromatic nylon has a glass transition temperature from 123° C. to 153° C.
6. The filament of claim 1 , wherein the aliphatic nylon has a glass transition temperature from 10° C. to 65° C.
7. The filament of claim 1 , wherein the one or more additives are selected from dyes, pigments, optical brighteners, and stabilizers.
8. The filament of claim 1 , wherein the electrically conductive particles comprise carbon.
9. The filament of claim 1 , wherein the filament has a tenacity of at least 6 gf/den with 15% elongation at break.
10. The filament of claim 1 , wherein the filament has a linear surface electrical resistivity of less than 4 kΩ/cm.
11. The filament of claim 1 , wherein the filament has an initial modulus of at least 45 gf/den.
12. A filament comprising:
a blend of an aliphatic nylon, a semiaromatic nylon, and optionally one or more additives, wherein the aliphatic nylon comprises about 75-90% by weight of the blend and the semiaromatic nylon comprises about 10-25% by weight of the blend, and
electrically conductive particles suffused into a surface of the filament,
wherein the filament has a linear surface electrical resistivity of less than 4 kΩ/cm, and
wherein the filament has an initial modulus of at least 45 gf/den.