通过单因素试验分析确定复合纺织面料中丝的最佳溶解工艺,探讨了不同的溶解时间、浴比及溶解温度对丝组分溶解的影响,采用化学溶解法对复合面料进行溶解.先用氯化钙-乙醇-水体系溶解丝麻复合面料中的丝组分,观察溶解丝组分是否对麻纤维有影响,再将丝组分溶解液制成再生丝素蛋白海绵,并对再生产物进行红外光谱、XRD、接触角和热学性能表征.结果表明:丝的最优溶解工艺为以摩尔比1∶ 2∶ 8的氯化钙-乙醇-水作为溶剂,丝与溶剂的浴比为1∶ 25,在温度80℃下溶解60 min;此溶解工艺并没有损伤剩余麻组分,经溶解后的丝组分回收产物可进行再利用.

The best dissolution process of spandex in waste composite textile fabrics was determined by single-factor test analysis, and the effects of different dissolution time, bath ratio and dissolution temperature on the dissolution of spandex components were explored. The chemical dissolution method was used to dissolve the composite fabrics, and the spandex components in waste composite fabrics were firstly dissolved by DMAc to observe whether the dissolved spandex components had any effects on the linen fibers, and the spandex components solution was made into spandex films, and the reproduction products were characterized. The results showed that the optimal dissolution process of spandex was 100% DMAc as the solvent, the bath ratio of spandex to DMAc was 1:30, the dissolution temperature was 70°C, and the dissolution time was 120 min. The dissolution process did not break the remaining hemp components, and the recovered products of the dissolved spandex components could be reused.

There is a large somatosensory gap between the three-dimensional (3D) printing of clothing and traditional garments due to the limitations (e.g., air permeability and skin-friendliness) of the printing materials. For this reason, the application of traditional textile materials in 3D printing has become a hot topic in the field of 3D printed clothing. Based on the above, this work prepared four kinds of cotton-containing composite solutions and then impregnated thermoplastic polyurethane core yarns in these solutions to obtain four types of 3D printed cotton-containing composite core yarns (3Dp-C-CYs). Afterward, based on the two-dimensional (2D) braiding method, four kinds of cotton-containing 3D printing wires used for fused deposition molding technology were prepared by wrapping low-melting polyester filaments around the different 3Dp-C-CYs. After comparing the printing performance of the four cotton-containing 3D printing wires, the wire containing cotton powders had the best comprehensive performance and was selected to print the cotton-containing 3D printed fabrics. The results showed that the cotton-containing 3D printed fabric has good flatness and contains a large number of cotton powders; in addition, compared with the traditional polylactic acid and acrylonitrile butadiene styrene copolymer 3D printed fabrics, the 3D printed fabric made up of cotton-containing 3D printing wire can provide a closer wearing experience to that of cotton fabric. The 3D printing wire produced by the 2D braiding method offers a new idea for applying traditional textile materials in 3D printing, showing great application potentials in the field of 3D printing of clothing.

In order to improve the mechanical and sound absorption properties of aerogel gel and expand its application, the 3D spacer fabric (WKSF) was filled into sodium alginate (SA) aerogel, and WKSF reinforced SA aerogel (WESA) composites were prepared. The effects of WKSF with different surface structures and SA with different concentrations on the acoustic, mechanical and thermal insulation properties of WESA composites were studied. The results show that when the concentration of sodium alginate is 3%, the WESA composite with rhombic pore structure on WKSF surface has better mid-low frequency sound absorption performance. The addition of WKSF can significantly improve the mechanical properties of WESA composites. Meanwhile, the composites with WKSF still have good insulation properties.

为了实现丝/腈纶复合面料的回收再利用,对丝和腈纶的溶解顺序进行了研究,并对丝回收产物和腈纶回收产物进行了红外光谱和X射线衍射分析.研究结果表明:可使用氯化钙-乙醇-水体系溶解丝,KSCN-水体系溶解腈纶;对于含丝/腈纶复合面料的溶解顺序是优先溶解丝,再溶解腈纶.对丝的回收产物进行了静电纺丝,所纺纤维膜有望用作过滤材料.

To enhance the compressive properties of syntactic foams, a new type of ternary composite named 3D spacer fabric/hollow microspheres reinforced composite (3DSMRC) was designed by adding warp-knitted space fabric (WKSF) into traditional syntactic foam. In order deeply understand the meso-mechanical properties of 3DSMRC composites, the compression tests of 3DSMRC were carried out and the quasi-static compression finite element models were established based on COMSOL Multiphysics. The results show that the compression properties of 3DSMRC were obviously controlled by structures of WKSF. To be specific, the 3DSMRC composites with more spacer yarns per unit area could withstand higher critical load, and with denser surface layers and larger spacer yarns inclination-angle could gain better compression capacities. Meanwhile, different types of microspheres also had important impact on the compression capacities of specimens, which could be improved by using smaller radius ratio (higher strength) microspheres. In addition, the finite element model can accurately reproduce the compression process and stress-strain curves of representative 3DSMRC samples, and then accurately simulate the values of compressive modulus and yield strength. The simulation and experimental studies of 3DSMRC can help to obtain a better and deeper understanding of the compression properties of this new type of composite, and finally provide a useful theoretical reference for the optimization design of 3DSMRC.

探究了织物组织对桌布服用性能的影响.对平纹、41/21右斜纹、8/3纬面加强缎纹、花式透孔及平纹小提花等5种组织结构的厚度、平方米克重以及耐磨、悬垂、耐皱、起毛起球、摩擦色牢度等性能进行了测试,分析浮长对织物组织性能的影响.结果表明:透孔组织是综合素质表现最为均衡的织物组织.由于平纹地小提花组织每根纱线上的交织次数不均匀,导致其在多项测试中出现数据波动的现象,说明了织物组织交织程度的均匀性会对织物性能产生一定的影响.

In this study, a new type ternary composite, called warp-knitted spacer fabric reinforced syntactic foam (WKSF-SF), with the advantages of high mechanical properties and a lower density, was proposed. Then, a meso-mechanics theoretical model based on the Eshelby–Mori–Tanaka equivalent inclusion method, average stress method and composite hybrid theory was established to predict the compression modulus of WKSF-SF. In order to verify the validity of this model, compression modulus values of theoretical simulations were compared with the quasi-static compression experiment results. The results showed that the addition of suitable WKSF produces at least 15% improvement in the compressive modulus of WKSF-SF compared with neat syntactic foam (NSF). Meanwhile, the theoretical model can effectively simulate the values and variation tendency of the compression modulus for different WKSF-SF samples, and is especially suitable for the samples with smaller wall thickness or a moderate volume fraction of microballoons (the deviations is less than 5%). The study of the meso-mechanical properties of WKSF-SF will help to increase understanding of the compression properties of this new type composite deeply. It is expected that WKSF-SF can be used in aerospace, marine, transportation, construction, and other fields.

介绍了"愿化雨的云"系列针织服装的设计过程,包括灵感来源、样板设计及缝制工艺,展示了成衣效果.系列服装以天之蓝作为主色调,配以云之白与灰;非织面料做成的装饰物,带人进入"雨"的世界,纱给人带来一种飘逸、朦胧之感.将实用性与艺术性相结合,给人以美的感受与思考.