OBC / EVA composite irradiation crosslinking foaming material and preparation method thereof

CN122404832APending Publication Date: 2026-07-17GUANGDONG FAIRNESS ENTERPRISE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-05-14
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing OBC/EVA-based irradiated crosslinked foam materials are insufficient in terms of resilience, tensile strength, and high-temperature resistance, making it difficult to meet the usage requirements around automotive engines and in high-temperature environments.

Method used

By optimizing the formulation components and proportions, selecting specific types and proportions of OBC, EVA, calcium carbonate, AC foaming agent, antioxidant, crosslinking aid, toughening agent and high temperature resistant modifier, and combining precise irradiation crosslinking and foaming processes, a three-dimensional crosslinking network and optimized cell structure are formed.

Benefits of technology

It significantly improves the material's resilience, tensile strength, and high-temperature resistance, with a resilience rate of over 65%, a tensile strength of 15MPa, and a performance degradation of ≤5% at 100℃, making it suitable for high-end applications.

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Abstract

本发明公开了一种OBC / EVA复合辐照交联发泡材料及其制备方法，属于高分子发泡材料技术领域。该材料以重量百分比计，配方包括：OBC 18%‑22%、EVA 45%‑55%、碳酸钙18%‑22%、AC发泡剂3%‑5%、抗氧化剂0.5%‑0.8%，及交联助剂、增韧剂、耐高温改性剂、发泡调节剂。其制备方法包括原料预处理、混炼塑化、挤出造粒、压延成型、辐照交联、发泡成型及后处理。本发明通过优化配方组分及比例，协同调控辐照和发泡工艺，解决现有OBC / EVA基发泡材料回弹差、抗拉伸弱、耐高温不足的缺陷，产品回弹率≥65%、拉伸强度≥15MPa，100℃恒温72h性能衰减≤5%，工艺稳定、成本可控，适用于汽车内饰、电子电器缓冲等高端场景，高端瑜珈垫，鞋垫，具有良好的工业化应用前景。
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