共查询到18条相似文献,搜索用时 172 毫秒
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以甲基三乙氧基硅烷、硅溶胶为成膜剂,磷酸酯M102B为阻燃剂,采用溶胶-凝胶方法制备含磷聚硅氧烷阻燃涂层剂,用于涤纶织物的表面涂覆处理,并对阻燃涤纶织物的结构与性能进行表征。结果表明:随着涂层剂涂覆量的增加,织物的阻燃性能提高,但织物的柔软性能和手感下降;当涂覆量为50.79 g/m2时,涤纶织物的续燃时间为3.7 s,损毁长度为3.5 cm,达到一级阻燃效果;经涂层剂整理的涤纶织物耐水洗性优良,洗涤20次后仍具有一级阻燃效果;涂层剂对涤纶的化学结构、热稳定性及力学性能影响不大。 相似文献
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以N,N-双(2-羟甲基)氨基乙基膦酸二甲酯与甲苯二异氰酸酯反应合成出磷-氮阻燃水性聚氨酯,应用于涤纶织物上,考察了其阻燃性能、耐水洗性能、热失重等性能,并用扫描电镜(SEM)和能谱仪(EDS)对阻燃处理的涤纶织物燃烧后的炭层进行分析.结果表明;与未阻燃整理的涤纶织物相比,阻燃整理的涤纶织物的极限氧指数(LOI)值提高了5.7%,垂直燃烧性能达到GB/T5455-1997 B1级,燃烧后布面干净,并具有良好的耐水洗性能.涤纶织物燃烧后表面形成致密、光滑、无孔洞的炭层,炭层中磷含量远远超过阻燃织物中原始含量,磷富集于炭层表面.阻燃整理织物的热失重曲线上快速热解阶段缩短,最大分解速率减小了32.7%. 相似文献
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为提高涤纶织物的阻燃性能,并解决涤纶织物的熔滴现象,本文采用石墨烯微胶囊与海藻酸钠共混制备出阻燃涂覆液,采用浸轧法制备阻燃涂覆涤纶织物。考察涂覆涤纶织物的阻燃性能,力学性能以及热学性能,结果表明:25g/L的海藻酸钠和1g的石墨烯微胶囊阻燃涂覆处理后的涤纶织物的极限氧指数由19.7%,上升到28.34%,达到难燃织物的标准。整理后的涤纶织物达到了V-0标准,涤纶织物燃烧后产生的熔滴的现象消失。织物的断裂强力由135.21N降低到了106.77N。涂覆处理前后,织物达到最大热分解速率的温度未产生明显变化,残炭率由12.07%上升到了26.98%,最大质量损失速率由1.79%/℃降低到了0.96%/℃。同时整理前后涤纶织物的热焓值由58.4J/g上升至68.4J/g。织物的导热系数由0.587 W/cm.℃×10-4提高到0.842W/cm.℃×10-4,热学性能得到了充分的提高。织物燃烧后所形成的残炭由无到连续且致密。 相似文献
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采用极限氧指数法(LOI)、垂直燃烧法等手段研究甲基三甲氧基硅烷包覆聚磷酸铵的协同阻燃剂,与水性聚氨酯组成阻燃涂层剂,对涤纶织物的阻燃效果。结果表明:甲基三甲氧基硅烷和聚磷酸铵配比为2:1,阻燃剂与水性聚氨酯配比为1:2,阻燃剂质量浓度为160g/L,烘焙温度为180℃,烘焙时间为120s,阻燃涤纶织物的极限氧指数为44.3%,损毁长度为29mm,阴燃时间和续燃时间均为0,达到GB20286-2006标准中的阻燃1级。 相似文献
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一、引言涤纶织物所用阻燃剂是在各类织物阻燃剂中占有较大比例的一类。随着各种室内装饰织物和产业用品不断地采用涤纶为原料,以及各行各业对阻燃产品要求的提高,涤纶阻燃剂的研制和生产也日趋增长。据不完全统计,我国目前研制的各种牌号的阻燃剂共有40多种,其中涤纶阻燃剂约占一半以上,而且仍在不断地开发和生产。本文根据国内几次学术会议的情况,以及1989年北京国际会议的部分最新资料,结合笔者在科研、生产中所掌握的信息与 相似文献
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阻燃粘胶织物的组织结构对其阻燃性能的影响 总被引:2,自引:0,他引:2
研究了阻燃粘胶织物的纱线号数、捻度、织物克重及组织等与阻燃性能的关系,结果表明:纱线号数越大、捻度越高、织物克重越大,织物阻燃性能就越好;阻燃粘胶纤维与阻燃涤纶混合制成的无纺布,阻燃粘胶纤维的用量应高于60%;阻燃粘胶与羊毛混合制成的无纺布,阻燃粘胶纤维用量高于25%,具有明显的阻燃效果。 相似文献
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为了提高磷酸腺苷单体在棉织物上的接枝改性程度及其阻燃效果,采用甲基丙烯酸缩水甘油酯(GMA)对一磷酸腺苷(AMP)、二磷酸腺苷(ADP)、三磷酸腺苷(ATP)进行改性,制得三种带有不饱和双键的阻燃单体AMP-m-GMA、ADP-m-GMA、ATP-m-GMA;然后通过紫外光接枝法将三种阻燃单体分别接枝到棉织物上,制备光接枝AMP-m-GMA、ADP-m-GMA和ATP-m-GMA阻燃棉织物;对三种阻燃单体进行了结构表征和热稳定性分析,并探究了三种阻燃单体光接枝阻燃棉织物的热稳定性、阻燃性能、燃烧行为和残炭结构。结果表明,三种磷酸腺苷通过GMA环氧基开环引入不饱和双键,且具有良好的热稳定性。相比于原棉织物,三种阻燃棉织物的最大热降解速率分别降低了60.0%、52.0%、60.0%,极限氧指数由16.1%分别提升到25.4%、27.4%、26.4%,织物热释放速率分别下降了15.09%、60.47%、37.82%,说明三种磷酸腺苷阻燃单体均有助于棉织物形成致密炭层,阻止热量扩散,获得良好的阻燃效果。其中,光接枝ADP-m-GMA阻燃棉织物的增重率可达22.4%,燃烧后损毁长度由30 cm缩短至14.2 cm,表现出更优异的阻燃性能。 相似文献
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分析了阻燃剂FR-510质量浓度、烘焙温度、烘焙时间对涤纶织物阻燃性能的影响,确定了最优工艺条件:阻燃剂质量浓度100 g/L、焙烘温度150℃、焙烘时间3 min。在此工艺条件下对涤纶织物进行整理,并进行耐水洗和耐摩擦性能测试,研究结果表明:当阻燃涤纶含量为50%时,交织物的阻燃性能最优,耐水洗和耐摩擦性能也满足使用要求,适合用于汽车座椅面料。 相似文献
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以双三羟甲基丙烷为原料合成一种新型含磷阻燃剂,该阻燃剂分子量较大,具有稳定的环状结构,热稳定性高于常用阻燃剂,阻燃效果好。探讨了原料配比、反应温度、反应时间对产率的影响,考察了目标产物的热稳定性能及其对不同织物的阻燃效果,用傅里叶变换红外光谱仪表征了中间体及目标产物的结构。结果表明,当原料配比为1∶3时,磷化温度为50℃,磷化时间5h,胺化温度为75℃时,反应效果较好,收率可达90%以上。目标产物对于锦纶的阻燃效果比较明显,对涤纶、棉有一定的阻燃效果,对于混纺、腈纶阻燃效果不明显。 相似文献
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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. 相似文献
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Multifunctional technical textiles are of great interest both by industry and academia and these products are considered as high value-added products that contribute to the economies of countries. In this study, polyamic acid (PAA) was synthesized through polycondensation of pyromellitic dianhydride (PMDA) and 4,4′-oxydianiline (ODA) in dimethyl acetamide (DMAc) at low temperature. Then, PAA was coated onto woven cotton and polyester fabric by padding technique. Finally, polyimide (PI)-coated multifunctional cotton and polyester fabrics were obtained by an easy coating technique and low-temperature imidization. Thus, low cost, easily accessible and widely used cotton and polyester fabrics were converted to high-performance textile products, which are flame retardant, UV protective, acid resistant, and waterproof. The chemical, thermal, morphological, optical, mechanical, wettability, chemical resistance, and flame retardancy properties of developed fabrics were investigated. Optical results showed that both PI-coated cotton and polyester fabrics are UV-A protective compared to noncoated fabrics. Moreover, PI-coated samples have high contact angles which are 111.43° and 113.40° for PI-coated cotton (PI-c-C) and PI-coated polyester (PI-c-PET), respectively. Young's modulus of PI-c-PET fabrics increased four times more than noncoated polyester fabric. PI coating changed the burning behavior of both cotton and polyester fabrics in a positive way. All the test results showed that these developed multifunctional textile products might find an application in different industrial areas such as automotive, aerospace, protective clothing, and so on due to easy and inexpensive production techniques and also superior properties. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136, 47616. 相似文献