摘要：【中文】本发明属于高分子材料技术领域，具体涉及一种用于铁轨防护的浇注型弹性体及其制备方法。所述的用于铁轨防护的浇注型弹性体，包括A组分和B组分，所述A组分和B组分的质量比为3‑6:1，其中，A组分由以下质量份数的原料组成：MOCA 5‑15份；聚醚多元醇A60‑85份；增塑剂9.5‑19.5份；催化剂0.1‑0.5份；B组分由以下质量份数的原料组成：聚醚多元醇B 20‑50份；异氰酸酯50‑80份。本发明A、B组分粘度小，流动性好，易于操作，能够有效的填充到铁轨与护轨之间，凝胶时间慢，可以提供充足的操作时间，粘接性能好，能够很好的粘接铁轨及护轨，且具有良好耐水解和耐老化性能，同时力学性能优异。 【EN】The invention belongs to the technical field of high polymer materials, and particularly relates to a casting type elastomer for rail protection and a preparation method thereof. The cast elastomer for rail protection comprises a component A and a component B, wherein the mass ratio of the component A to the component B is 3-6:1, and the component A comprises the following raw materials in parts by mass: 5-15 parts of MOCA; polyether polyol A60-85 parts; 9.5-19.5 parts of a plasticizer; 0.1-0.5 part of catalyst; the component B comprises the following raw materials in parts by mass: 20-50 parts of polyether polyol B; 50-80 parts of isocyanate. The A, B component has the advantages of low viscosity, good fluidity, easy operation, slow gelling time, sufficient operation time, good bonding property, good hydrolysis resistance and aging resistance and excellent mechanical property, and can be effectively filled between a rail and a guard rail.