▎ 摘　　要

NOVELTY - Modified polyisoprene rubber, is claimed. The raw material of the modified polyisoprene rubber includes polyisoprene containing polar component and second polar substance, where second polar substance is a substance capable of interacting with polar component in the polar component-containing polyisoprene and inducing phase separation to form an ordered secondary structure, polyisoprene containing polar component forms a polar environment, and second polar substance spontaneously form an ordered secondary structure in a polar environment. USE - The rubber is useful for making polyisoprene having tensile strength more than 26 MPa; and fatigue resistance more than 84% (all claimed). ADVANTAGE - The rubber: has stronger comprehensive performance improvement, tensile strength more than 26-30 MPa, fatigue resistance more than 84% and reaches 94%; and is stable. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: Preparing modified polyisoprene rubber comprising physically and uniformly blending polyisoprene containing polar component and second polar substance, and then vulcanizing to obtain modified polyisoprene rubber; Method for making polyisoprene tensile strength more than 26 MPa comprising physically blending polyisoprene containing polar component with second polar substance, and then vulcanizing to obtain modified polyisoprene rubber, where second polar substance is a substance capable of interacting with polar component in the polyisoprene containing polar component and inducing phase separation to form an ordered secondary structure; Method for making fatigue resistance of polyisoprene more than 84% comprising physically blending polyisoprene containing polar component with second polar substance, and then vulcanizing to obtain modified polyisoprene rubber, where second polar substance is a substance capable of interacting with polar component in the polyisoprene containing polar component and inducing phase separation to form an ordered secondary structure; and Method for simultaneously making the tensile strength of polyisoprene more than 26 MPa, and fatigue resistance more than 84% comprising physically blending polyisoprene containing polar component with second polar substance, and then vulcanizing to obtain modified polyisoprene rubber, where second polar substance is a substance capable of interacting with polar component in the polyisoprene containing polar component and inducing phase separation to form an ordered secondary structure.