High-softness, high-toughness and cracking-resistant sheath material and preparation method thereof

The invention discloses a high-softness, high-toughness and cracking-resistant sheath material and a preparation method thereof. The high-softness, high-toughness and cracking-resistant sheath material is specifically prepared from polyolefin elastic fibers through the processes of spiral curling, irradiation crosslinking, high-speed mixing, parallel twin-screw extrusion granulation, dipping in a dipping machine head and the like. The product can be used for extruding sheath materials of elevator cables, coal mine cables, crane cables, tower cranes and stacker cables, the sheath of the product has high flexibility, toughness and anti-cracking performance, sheath cracking caused by bending and folding can be avoided in the using process, normal operation of the cables is guaranteed, and the service life of the cables is prolonged. 本发明公开了一种高柔软高韧性耐开裂护套材料及其制备方法，具体是采用聚烯烃弹性纤维通过螺旋卷曲，辐照交联，高速混合，平行双螺杆挤出造粒，浸渍机头浸渍等工艺制备而成。该产品可用于电梯线缆、煤矿用线缆、起重机线缆、塔吊、堆垛机线缆护套材料的挤制，该产品护套具有较高的柔软性，韧性及抗开裂性能，在使用过程中能避免弯曲折叠造成的护套开裂，保证线缆的正常运行，提升了线缆的使用