COMBINED FILAMENT FOR POLYMER WEAR RESISTANT COMPOSITE MATERIALS Russian patent published in 2011 - IPC D01D5/22 D02G3/00 

FIELD: metallurgy.

SUBSTANCE: combined filament is made out of polymer component and out of component in form of rod armature. Also, the filament contains a heat resistant fibre as a polymer component chosen from the group: poly-meta-phenylen-oxadiazol fibre or poly-para-phenylen-oxadiazol fibre, or modified co-polymer light resistant oxadiazol fibre, or poly-meta-phenylen-terephthalamide fibre, or poly-metaphenylen-isophthalamide fibre or their mixtures. The combined filament also contains the component made in form of a rod armature with number of coils 50-340 tw/m and corresponding to cotton threads or yarn with linear density 10-100 tex. The polymer component of a combined thread is made as a rod with linear density 6.3-300 tex. Notably, combined thread has linear density of elementary fibre 0.08-0.66 tex, of twist 0-350 twists/metre and number of filaments from 48 to 40000 at diametre of filament 1-28 mcm and ultimate tensile strength of 48 polymer filaments 0.3-3.2 GPa, coefficient of elasticity 120-146 GPa, permanent strain after rupture 3-4% and coefficient of variation for strength 4-8% at the following ratio of filament components, mmu (milli-mass unit) sh.: polymer component 10-90, cotton fibre - the rest to 100 wt.sh.

EFFECT: fabrication of composite material with increased service life and resistance at friction.

2 cl, 2 tbl