文章信息/Info

Title:

Research Progress of Waste Nylon Recycling Technology

文章編號(hào):

1674-3962(2022)01-0014-08

作者:

徐千惠1; 胡紅梅1; 朱瑞淑1; 孫莉娜1; 俞建勇1; 2; 王學(xué)利2

（1.東華大學(xué)紡織學(xué)院，上海 201620）（2.東華大學(xué) 紡織科技創(chuàng)新中心， 上海 201620）

Author(s):

XU Qianhui1;  HU Hongmei1;  ZHU Ruishu1;  SUN Lina1;  YU Jianyong1; 2;  WANG Xueli2

(1.College of Textiles, Donghua University, Shanghai 201620, China) (2.Innovation Center for Textile Science and Technology, Donghua University, Shanghai 201620, China)

關(guān)鍵詞:

尼龍; 回收技術(shù); 溶解/再沉淀; 水解; 離子液體解聚

Keywords:

nylon;  recycling technology;  dissolution/reprecipitation;  hydrolysis;  ionic liquid

分類(lèi)號(hào):

TQ342+.1;X705

DOI:

10.7502/j.issn.1674-3962.202108023

文獻(xiàn)標(biāo)志碼:

A

摘要:

在科技日新月異的今天，可持續(xù)發(fā)展已成為世界各國(guó)的共識(shí)，合理高效地研究開(kāi)發(fā)可再生資源已成為國(guó)內(nèi)外的重要研究方向和熱點(diǎn)。而隨著在合成纖維中具有重要地位的尼龍的消費(fèi)量不斷增長(zhǎng)，其廢棄物的循環(huán)利用受到了學(xué)者們的廣泛關(guān)注。綜述了近些年國(guó)內(nèi)外有關(guān)廢舊尼龍類(lèi)材料物理回收、化學(xué)解聚工藝的研究現(xiàn)狀。重點(diǎn)介紹了幾種主要的回收工藝，包括物理回收的溶解/再沉淀法、化學(xué)回收的水解、醇解、氨解及離子液體解聚等工藝，并對(duì)這幾種工藝方法的優(yōu)缺點(diǎn)進(jìn)行了概述。最后，對(duì)廢舊尼龍回收技術(shù)在工業(yè)生產(chǎn)上的實(shí)際應(yīng)用問(wèn)題進(jìn)行了探討，并明確指出了綠色溶劑溶解/再沉淀技術(shù)、亞/超臨界性的流體解聚技術(shù)、固體超強(qiáng)酸催化解聚技術(shù)、離子液體解聚技術(shù)是未來(lái)的重點(diǎn)研究方向。

Abstract:

With the rapid development of science and technology, sustainable development has become the consensus of all countries in the world. Reasonable and efficient research and development of renewable resources has become the main research direction and hotspot at home and abroad. With the increasing consumption of nylon, which plays an important role in synthetic fiber, the recycling of its waste has attracted extensive scholars-attention. This paper reviews the research status of physical recovery and chemical depolymerization of waste nylon materials at home and abroad in recent years. Several main recovery processes are introduced, including dissolution/reprecipitation in physical recovery and hydrolysis, alcoholysis, ammonolysis, ionic liquid depolymerization in chemical recovery. The advantages and disadvantages of these processes are summarized. Finally, the practical application of waste nylon recovery technology in industrial production is discussed, and it is clearly pointed out that green solvent dissolution/reprecipitation technology, ultra (sub) critical fluid depolymerization technology, solid superacid catalytic depolymerization technology and ionic liquid depolymerization technology are the key research directions in the future.