Abstract: With the continuous development of society and the rapid growth of global textile production, the annual textile consumption per capita and the output of waste textiles have also increased significantly. While the recycling of waste fabrics in China is still at a low-level stage, with a comprehensive utilization rate of less than 15%, resulting in a serious waste of resources and environmental pollution. Due to the variety types of waste civilian clothing and the complexity of corresponding fabrics, it is relatively difficult and costly to recycle them. Waste military uniforms (WMUs) have uniform styles, clear fabric components, and a large amount of usage, and thus become an ideal recycled raw material. If appropriate separation strategies can be adopted to separate various components and further fabricate recycled products based on the fabric components, the high-value recycling and reuse of WMUs will be achieved effectively, which can provide valuable references for the high-value recycling and reuse of wasted civilian clothing. 
In order to promote the high-value fabric recycling of WMUs in China, we summarized the types and fabrics features of type 07 military uniforms, systematically introduced the present recycle strategies of WMUs, such as splitting spinning, recycled polyester pellets, as well as the separation of polyester/cotton, and projected the progress of the recycling of WMUs. Current fabric recycling of WMUs mainly focuses on the simple reusage, as well as the recycling of polyester components to prepare recycled polyester pellets. While there are few studies on the high-value recycling of other components, especially on the cotton fibers with high proportion in military uniforms. If effective polyester/cotton separation technologies can be adopted to effectively separate the polyester and cotton fibers, then corresponding recycled polyester pellets and dissolved cotton pulp can be prepared by using the separated components. Regenerated cellulose products can be further fabricated based on the recycled cotton pulp by using this promising strategy. Therefore, the development of high-efficient separation of polyester and cotton, and corresponding high-value utilization of the recycled polyester and cotton components are important development trends of the comprehensive high-value recycling of WMUs.  

Key words: waste military uniform fabrics, separation of polyester and cotton, high-value recycling, recycled polyester pellets, recycled Lyocell fibers

摘要： 为促进废旧军服面料的高值化回收利用，总结了国内07式军服的种类及其面料特征，系统分析了目前开纤纺纱法、再生聚酯切片法、涤棉分离技术等废旧军服面料的回收利用方法，并对废旧军服面料回收再利用的发展前景进行展望。研究表明：目前废旧军服面料的回收利用主要聚焦于涤纶组分的简单再利用或回收制备高值再生聚酯切片，较少关注军服面料中其余组分的高值回收利用。针对废旧军服面料中含量相对较高的涤棉混纺面料，采用有效的涤棉分离技术高效分离涤纶和棉纤维，并以此作为原料分别制备再生聚酯切片和再生溶解浆，进一步以再生棉浆粕为原料制备再生纤维素产品将非常有前景。因而，开发高效的涤棉分离、废旧涤纶和棉纤维的高值化利用技术是实现废旧军服面料综合利用的重要发展方向。

关键词: 废旧军服, 涤棉分离, 高值回收利用, 再生聚酯切片, 再生Lyocell纤维