理研Technos與東北大學共同研究用於汽車電線(線束)的PVC被覆材料回收方法

理研Technos與東北大學正共同開發用於汽車線束的PVC被覆材料之先進回收技術。此新型濕式分離法可回收高純度PVC,並已成功將其再製成複合材料,即使回收料含量高達40%,其性能仍與新產品相當。
Press ReleaseNQ 92/100出典:PR Times

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理研Technos株式會社正與東北大學共同推進聚氯乙烯(PVC)產品之一的線束被覆材料的回收技術開發。從報廢汽車回收的線束,其主流回收方式為「塊粒法」,即將其粉碎後透過比重分選將銅與被覆材料分離。回收的銅會被再利用,但被覆材料因含有PVC等多種樹脂並混有銅粉,難以再資源化。本公司著眼於東北大學大學院環境科學研究科的團隊所開發的、能分別回收高品質銅及PVC被覆材料的線束高度濕式剝離處理技術,並共同推進研究。此技術透過將線束浸泡於有機溶劑中使PVC被覆材膨潤,再以球磨機施加衝擊力分離銅線與PVC被覆材,分離性能遠高於傳統方法,可回收高純度PVC。經實驗室研究,我們已確認透過優化配方,含有高達40%回收被覆材的再生複合材料,其物理性能仍與傳統產品相當。

常見問題

Who is involved in this joint research?

Riken Technos Corporation is collaborating with a research group led by Professor Yoshioka and Associate Professor Kumagai from Tohoku University's Graduate School of Environmental Studies.

What specific material is being recycled?

They are recycling the Polyvinyl Chloride (PVC) coating material from automotive wire harnesses recovered from end-of-life vehicles.

How does the new recycling technology work?

It is an advanced wet separation process where the wire harness is soaked in an organic solvent to swell the PVC coating, then a ball mill applies impact to separate the PVC from the copper wire.

What is the main advantage of this new method over the traditional 'nugget method'?

The new method has a much higher separation performance, allowing for the recovery of high-purity PVC material, which is difficult with the nugget method where the material is often contaminated.

What success has been achieved in the lab so far?

They have successfully created a re-compounded material containing up to 40% recycled PVC coating that exhibits mechanical properties equivalent to those of conventional, new products.