PLASMA TREATING AN ARAMIDE MONOFILAMENT.

摘要

PCT No. PCT/FR91/01052 Sec. 371 Date Jun. 22, 1993 Sec. 102(e) Date Jun. 22, 1993 PCT Filed Dec. 20, 1991 PCT Pub. No. WO92/12285 PCT Pub. Date Jul. 23, 1992.A method of treating an aramid monofilament by plasma in such a manner that the monofilament has a wettability by water satisfying the relationship WSSL>/=120, WSL being the reversible solid-liquid adhesion work expressed in mJ/m2. By way of example, the treatment is carried out by means of a plasma at reduced pressure, and the monofilament is subjected to a coating treatment after the surface treatment. The aramid monofilament is characterized by the following relationships: 1.7/=170-D/3; Mi>/=2,000; and WSL>/=120. In the above relationships, Ti represents linear density in tex, D represents diameter in mu m (micrometers), T represents tenacity in cN/tex, and Mi represents initial modulus in cN/tex. The aramid monofilament is particularly useful for reinforcing tires.