NANOCOMPOSITE ON THE BASIS OF SUPER-HIGH-MOLECULAR POLYETHYLENE AND METHOD OF ITS OBTAINING Russian patent published in 2018 - IPC B82B3/00 C08F292/00 C08L23/06 C08K3/34 

FIELD: technological processes.

SUBSTANCE: invention relates to nanocomposites based on polyethylene and layered silicates. Nanocomposite was obtained by treating pre-dehydrated montmorillonite (MMT) with catalyst components consisting of a transition metal compound VCl₄ and organoaluminum compound Al(i-Bu)₃, followed by polymerization of ethylene on deposited catalyst. Moreover, polymerization in sity is carried out on MMT particles of an average size of 8 mcm and with interplanar spacing in particles of 2.46 nm. Ultra-high-molecular-weight polyethylene in the resulting nanocomposite has molecular weight of at least 1.5⋅10⁶. Nanocomposite contains montmorillonite nanoparticles in amount of 0.7 wt% to 8.3 wt% and has modulus of elasticity (E_p) not less than 810 MPa, tensile strength (σ_pp) at least 35.5 MPa, relative elongation at break (ε_pp) 260–370 % and wear on the skin is not more than 35.1 mm³.

EFFECT: nanocomposite has high values of deformation-structural characteristics and high durability.

6 cl, 1 dwg, 1 tbl, 5 ex