EFFECT OF NATURAL RUBBER LATEX MATERIALS ON PROPERTIES OF COSMETIC PROSTHETIC FINGERS

Abstract

The article researched the effect of natural rubber latex materials on properties of aesthetic fake finger products. In the investigated latex types, the natural rubber latex has a solid content of 55.82% and a viscosity of 68 cP, which is suitable for processing cosmetic finger products according to 3 layers of latex mixture on the mold. The dispersion of solid materials and the product gloss were improved when using 0.6 wt % polyethylene glycol (PEG) wetting agent and 0.3 wt % Tamol dispersant. Natural rubber latex has been suitable for Asian people, Red Indian and black people; it can give dark and light skin tones to Asian people. Cosmetic prosthetic fingers made from natural rubber latex has 5 times higher tensile strength than silicone rubber, passed color stability (Δ E < 1) after 102 hours of UV radiation - condensation exposure cycles, the human skin irritation tests, the degree of phenol contamination, the Pb and Cd content according to the regulations of the Ministry of Health of Vietnam.