Environment-friendly controllable degradation cable protection layer and preparation process thereof

Through endogenous molecular design and specific processes, the problems of poor interfacial compatibility and uncontrollable degradation of PLA and PBAT blends in cable protective layers have been solved, resulting in an environmentally friendly cable protective layer with high strength, toughness, and controllable degradation, and excellent solvent barrier and gradient degradation performance.

CN122404931APending Publication Date: 2026-07-17SHENZHEN KINGMAKING CABLES & WIRES IND CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHENZHEN KINGMAKING CABLES & WIRES IND CO LTD
Filing Date
2026-04-30
Publication Date
2026-07-17

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Abstract

本发明公开了一种可控降解的环保电缆保护层及其制备工艺，旨在解决现有PLA / PBAT材料界面相容性差、降解不可控及阻隔性低的问题。该保护层由按质量份数由60~85份组分A、10~25份组分B、2~8份组分C、0.5~2份组分D组成。组分A由聚乳酸与聚己二酸 / 对苯二甲酸丁二醇酯复配；组分B由聚己内酯接枝马来酸酐与环氧化大豆油复配；组分C由纤维素纳米晶体与滑石粉复配；组分D为抗氧化剂。本申请通过内源性反应增容在界面形成化学锚定，杜绝组分B迁移；并利用组分C构建致密球晶，实现增强、增韧与高阻隔的协同。工艺上采用高速预混及双 / 单螺杆分区控温加工。所得材料拉伸强度达48.5MPa以上，断裂伸长率达153%以上，降解曲线线性度R2>0.99，实现全生命周期可控梯度降解。
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