Abstract Fly ash (FA) is a byproduct of thermal power stations, which causes increasing environment pollution in the last decade. The incorporation of FA would deteriorate the performance of polymer composites even modified by silane coupling agents. Thereby, the bulk utilization of FA in polymer industry is still a challenge in the world. In this work, by in-situ carboxylate reaction between carboxyl groups of carboxylated nitrile butadiene rubber (XNBR) and FA particles, an immobilized rubber layer is formed on the surface of FA particles, resulting in a better interface adhesion. As a consequence, the tensile strength of XNBR/20FA composite reaches 23.19 MPa, about 44.0% larger than pure XNBR. Even if the incorporation of FA is up to 40phr, the tensile strength is still about 20.60 MPa, about 28.0% larger than pure XNBR, which opens a new approach to lower polymer product cost and solve the environment pollution.

中文翻译：

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原位羧酸酯反应制备羧基丁腈橡胶/粉煤灰复合材料

摘要 粉煤灰（FA）是火力发电厂的副产品，在过去十年中对环境造成的污染日益严重。即使用硅烷偶联剂改性，FA 的掺入也会降低聚合物复合材料的性能。因此，FA在聚合物工业中的大量利用在世界范围内仍然是一个挑战。在这项工作中，通过羧基丁腈橡胶 (XNBR) 的羧基与 FA 颗粒之间的原位羧酸酯反应，在 FA 颗粒表面形成了固定橡胶层，从而产生了更好的界面粘附。因此，XNBR/20FA 复合材料的拉伸强度达到 23.19 MPa，比纯 XNBR 高约 44.0%。即使FA的掺入量高达40phr，抗拉强度仍约为20.60 MPa，比纯XNBR高约28.0%，