Composition for inner container of gas storage tank as well as preparation method and application of composition

The invention discloses a composition for an inner container of a gas storage tank as well as a preparation method and application of the composition. The composition at least comprises i, polyamide; the composition is obtained by carrying out hot melting and kneading on the raw materials of i, halogenated isobutylene rubber, and iii, a rubber compounding agent. According to the invention, the halogenated isobutylene rubber and the polyamide are mixed, and the halogenated isobutylene rubber is dynamically vulcanized in the mixing, hot melting and kneading use process, so that the formed composite material has excellent impact resistance and hydrogen permeation resistance, and is suitable for being used as a raw material of the liner of the gas storage tank. 本发明公开了一种储气罐内胆用组合物及其制备方法和应用，所述组合物是指将至少包含i.聚酰胺；ii.卤化异丁烯橡胶，iii.橡胶配合剂的原料经热熔捏合后得到所述组合物。本发明采用卤化异丁烯橡胶与聚酰胺混合，在混合、热熔捏合使用过程中卤化异丁烯橡胶动态硫化，形成的复合材料具有优异的耐冲击力和抗氢气渗透性，适合用作储气罐内胆的原料。