尼龙-11粉末涂料

本文简要地介绍了我国粉末涂料的发展概况，并概述了热固性和热塑性粉末涂料的应用领域．文章重点介绍了尼龙－１１粉末涂料的优点及其制造法，阐述了其在管道防腐、船体防护和建筑行业等领域的应用     

碳纤维增强尼龙复合材料的进展

作者介绍了近期国外在碳纤维增强尼龙复合材料应用、加工及形态结构研究方面的进展，并对其技术开发动向和发展趋势作出了展望．     

热塑性IPN PP/PA6的力学性能研究

利用热塑性IPN技术制备PP／PA6共混物，通过方差分析讨论了PP含量、溶胀温度、溶胀时间对热塑性IPN PP／PA6共混材料力学性能的影响，利用红外光谱仪对共混材料PP／PA6的结构进行表征同时利用扫描电镜对PP和热塑性IPN PP／PA6的断口形貌进行观察，发现利用热塑性IPN技术来制备的PP／PA6共混物中PP与PA6之间具有一定的相容性。     

纳米抗菌锦纶的染色性能

为了探讨纳米材料对锦纶染色性能的影响，在相同条件下，用尼龙费林上染纳米抗菌锦纶和普通锦纶，测试了二者的上染百分率，并对染色前后纳米抗菌锦纶进行扫描电镜分析。结果表明，纳米抗菌锦纶的上染百分率小于普通锦纶，但是二者的显色情况相近；染色后，纳米抗菌锦纶表面的纳米颗粒明显减少，说明染色时有纳米颗粒从锦纶表面脱落。     

热处理过程对锦纶6帘子线性能的影响

针对锦纶6帘子线易收缩、强度低等性能方面的不足，对其戍品纤维再次进行热处理试验，以研究纤维收缩机理和规律，进而明确工艺调整方向．研究认为，热处理温度、时间、张力是其收缩率的主要影响因素，并且也依赖于纤维解取向程度和结晶度的大小．根据这种设想，在实验室中已获得了收缩率小于4％、强度为7．3cN／dtex、断裂伸长率为22％的锦纶6帘子线。     

表面活性剂对钛酸四丁酯整理尼龙6织物的影响

根据水热合成技术,在以钛酸四丁酯为前体物时,通过添加表面活性剂来控制生成的纳米二氧化钛颗粒尺寸,同时直接对尼龙6织物表面进行整理改性,并使用活性染料对织物进行染色。测试了织物的透气性、光泽度、拉伸性能以及色牢度等,研究了不同种类表面活性剂对钛酸四丁酯整理尼龙6织物服用和染色性能的影响。结果表明,经整理改性的织物断裂强力和断裂伸长率增大,十二烷基苯磺酸纳使织物光泽度提高,壳聚糖使织物透气性下降最少。     

A new mechanism for the electrospinning of nanoyarns

A new electromechanical mechanism for spinning “core electrospun nanoyarn” is researched, designed, and implemented. SEM images have shown that the deposited nanofibers were wrapped helically around the core filament resulting in a core electrospun nanoyarn. The parameters of this mechanism such as feed‐in angles, twist rates, and take‐up speeds are analytically investigated. Twist rates of 500 to 750 revolutions per minute, core feed‐in angle of 0°, and take‐up speed of 1.5 cm/s were found optimum for successfully producing core electrospun nanoyarn. This nanoyarn is expected to find many applications in industrial and medical textiles. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012     

Flame retardant finishing of the polyester/cotton blend fabric using a cross‐linkable hydroxy‐functional organophosphorus oligomer

Blend fabrics of cotton and polyester are widely used in apparel, but high flammability becomes a major obstacle for applications of those fabrics in fire protective clothing. The objective of this research was to investigate the flame retardant finishing of a 50/50 polyester/cotton blend fabric. It was discovered previously that N,N′‐dimethyloldihydroxyethyleneurea (DMDHEU) was able to bond a hydroxy‐functional organophosphorus oligomer (HFPO) onto 50/50 nylon/cotton blend fabrics. In this research, the HFPO/DMDHEU system was applied to a 50/50 polyester/cotton twill fabric. The polyester/cotton fabric treated with 36% HFPO and 10% DMDHEU achieved char length of 165 mm after 20 laundering cycles. The laundering durability of the treated fabric was attributed to the formation of polymeric cross‐linked networks. The HFPO/DMDHEU system significantly reduced peak heat release rate (PHRR) of cotton on the treated polyester/cotton blend fabric, but its effects on polyester were marginal. HFPO/DMDHEU reduced PHRR of both nylon and cotton on the treated nylon/cotton fabric. It was also discovered that the nitrogen of DMDHEU was synergistic to enhance the flame retardant performance of HFPO on the polyester/cotton fabric.     

Synthesis and application of a sulfur‐containing phosphoric amide flame retardant for nylon fabric

A sulfur‐containing flame retardant (SFR) was synthesized from polyphosphoric acid, epoxy chloropropane, and thiourea. Using a water‐soluble isocyanate‐terminated (WIT) cross‐linker, the flame retardant was applied as a flame‐retardant finishing on nylon fabric. WIT is a compound that not only cross‐links SFR and nylon cellulose but also contains no formaldehyde. Comparisons of the main performances of SFR with those of N‐methyloldimethylphosphonopropionamide (known as ‘Pyrovatex CP’) and a bicyclic phosphonite (known as ‘Antiblaze 19T’) indicate that the presence of sulfur in SFR plays a crucial role in decreasing the flammability of the nylon fabric. The limiting oxygen index value and damaged carbon length of the finished nylon fabric were 29.4% and 5.7 cm, respectively, when the concentrations of SFR and WIT were 200 and 40 g/L, respectively, and the baking temperature and time were 150 °C and 3 min, respectively. After 10 laundry cycles, the fabric still retains some flame retardancy. Copyright © 2016 John Wiley & Sons, Ltd.     

乙烯基胶原蛋白微球的制备及其应用

为了得到带有“-C=C-”的胶原蛋白微球,我们使用甲基丙烯酸酐对胶原蛋白改性,再采用乳化交联法将改性胶原蛋白制备成乙烯基胶原蛋白微球(CMAs),并将微球应用到尼龙基材上。研究了CMAs的制备条件,使用傅里叶红外光谱(FT-IR)、扫描电子显微镜(SEM)、激光粒度分析仪等对CMAs和乙烯基胶原蛋白微球/尼龙(Nylon-CMAs)进行表征。结果表明,当乙烯基胶原蛋白浓度为15%,转速为800 r/min,交联剂用量为0.8 mL,水油体积比为1∶5,乳化剂用量为2%时,制备的乙烯基胶原蛋白微球的平均粒径为21.204μm,形貌规整、圆整度好,表面光滑,粒径分布较窄。接触角结果显示将微球修饰到尼龙上可以使尼龙由原来的疏水织物变为亲水织物,且制备的织物具有较好的水热稳定性能。