The invention relates to a high-strength activated
polyester industry
yarn and a preparation method thereof. The high-strength activated
polyester industry
yarn is a modified
polyester industry
yarn of which the surface is coated with an activating agent and the high-strength activated polyester industry yarn is prepared from modified polyesters through
spinning; the modified polyester is composed of polyester and aminoadipic acid gylcol ester,
hydrogen-bond interaction exists between the aminoadipic acid gylcol ester and the molecular chains of the polyester, and the relative position of the aminoadipic acid gylcol ester and the molecular chains of the polyester is fixed; the free volume of the
fiber is increased when the high-strength activated polyester industry yarn is at 70-80 DEG C, a part of activating agent molecules are dispersed into
fiber gaps, more -OHs and -NHs with strong activity are introduced into the polyester molecules, a firm resinoid
coating is formed on the surface of a polyester cord thread and the reactivity of the polyester
fiber is improved; and the high-strength activated polyester industry yarn can be applied to triangular belt cords,
radial tire cord fabrics and the like.