Puncture-resistant low-crack underground engineering tire sidewall composition and preparation method thereof

The invention provides a puncture-resistant low-crack underground engineering tire sidewall composition and a preparation method thereof. The puncture-resistant low-crack underground engineering tire sidewall composition comprises the following components: 20.0-60.0 parts of end group modified natural rubber; 10.0 to 60.0 parts of star rubber; 1.0 to 40.0 parts of high-benzene rubber; 0 to 10.0 parts of liquid regenerated rubber; 30.0 to 60.0 parts of carbon black; 1.0 to 20.0 parts of pre-dispersed granulated white carbon black; 1.0 to 4.0 parts of a silane coupling agent; 2.0-5.0 parts of zinc oxide with an ultrafine particle size; 0.1 to 2.0 parts of a functional modifier; 0.5 to 3.0 parts of stearic acid; 1.0 to 5.0 parts of tackifying resin; 0.5 to 5.0 parts of resorcinol formaldehyde resin; 2.0 to 5.0 parts of an anti-aging agent; 0.5 to 3.0 parts of an accelerant; 0.5 to 3.0 parts of sulfur; and 0-0.5 part of a scorch retarder. According to the puncture-resistant and low-crack underground engineering t