CN108342905A - 一种耐水洗阻燃抑烟纤维素织物的浸轧整理方法 - Google Patents
一种耐水洗阻燃抑烟纤维素织物的浸轧整理方法 Download PDFInfo
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Abstract
本发明提供一种耐水洗阻燃抑烟纤维素织物的浸轧整理方法,包括以下步骤:把纤维素织物浸润在硼氮基有机阻燃剂水溶液中;当纤维素织物的吸液率达到50%~100%时,把纤维素织物从硼氮基有机阻燃剂水溶液中取出,并放置在100℃~160℃的高温干燥环境中进行加热干燥;再把纤维素织物浸润在交联剂水溶液中;当纤维素织物的吸液率达到50%~100%时,把纤维素织物从交联剂水溶液中取出,并放置在不超过100℃的环境下进行低温干燥,实现交联剂和硼氮基有机阻燃剂在纤维素织物中形成交联的聚合物。使用该浸轧整理方法实现交联固定的纤维素织物具有优良的阻燃性能,在着火时大幅度减少了烟雾的释放,同时兼顾了纤维素织物的力学强度。
Description
技术领域
本发明涉及织物的处理方法领域,更具体地,涉及一种耐水洗阻燃抑烟纤维素织物的浸轧整理方法。
背景技术
由于本身的易燃性,广泛应用的纤维素织物成为很多火灾中的引燃物及火势迅速加剧的助燃物。在很多公共场所,这些纤维素织物被要求具备优良的阻燃防火性能。市场上广泛使用的耐久阻燃整理剂,如“Proban”和“Pyrovatex”,因为在后整理加工及后期使用中都会释放甲醛,危害操作工人和穿着者的健康,逐渐被新兴的绿色无卤无甲醛阻燃剂所替代。目前使用的耐久阻燃整理剂主要是磷氮阻燃剂,遇火产生大量有毒烟气。另外,含磷阻燃剂在自然界的累积会直接导致水体的富营养化,促发藻类增生而打破生态的平衡持续发展,因此工业界需要更安全环保的引入绿色的元素的阻燃剂。
现有技术中,专利US 6491727B1公开了一种纤维素基材的阻燃整理的组合物及方法,该组合物包括至少一种磷基化合物、交联剂,交联剂为带有至少两个活性基团的化合物,磷基化合物优选与交联剂连接,然后交联剂和纤维素基材连接。专利CN 102465452A公开了一种通过两步法施用至少一种交联剂和至少一种磷基阻燃剂到纤维素织物,使所述交联剂和磷基阻燃剂在纤维素织物内低温反应形成交联的聚合物,以达到持久阻燃的性能,同时保持了织物的力学强度。这些技术主要依赖含磷的阻燃剂提高纤维素织物的安全性,存在燃烧中释放大量烟雾的问题。而专利CN103397517公开了将布料浸泡在硼酸锌溶液中制备一种硼类阻燃布料的方法。然而,上述报道的硼类化合物都存在易水解耐水洗性差的问题,无法保证持久的阻燃效率。
发明内容
本发明要解决的技术问题在于,针对所述现有技术中存在的缺陷,提供一种基于新型硼氮基有机阻燃剂,可以有效抑制和减少纤维素织物着火而产生的烟雾,同时使织物具有高效耐水洗的阻燃性能的耐水洗阻燃抑烟纤维素织物的浸轧整理方法。
本发明解决其技术问题所采用的技术方案是:提供一种耐水洗阻燃抑烟纤维素织物的浸轧整理方法,包括以下步骤:
S1、把纤维素织物浸润在硼氮基有机阻燃剂水溶液中;
S2、当所述纤维素织物的吸液率达到50%~100%时,把所述纤维素织物从所述硼氮基有机阻燃剂水溶液中取出,并放置在100℃~160℃的高温干燥环境中进行加热干燥;
S3、将所述纤维素织物从高温干燥环境中取出,再把所述纤维素织物浸润在交联剂水溶液中;
S4、当所述纤维素织物的吸液率达到50%~100%时,把纤维素织物从所述交联剂水溶液中取出,并放置在不超过100℃的环境下进行低温干燥,实现交联剂和硼氮基有机阻燃剂在纤维素织物中形成交联的聚合物。
优选地,在步骤S1中,所述硼氮基有机阻燃剂水溶液中硼氮基有机阻燃剂的质量分数不超过20%。
优选地,在步骤S1中,所述硼氮基有机阻燃剂水溶液中的硼氮基有机阻燃剂的分子量在160和100,000之间,硼氮基有机阻燃剂分子中的硼原子与苯环直接通过共价键相连,且氮原子数量多过硼原子数量。
优选地,在步骤S3中,所述交联剂水溶液中的交联剂为带有至少两个功能基团的化合物,所述功能基团包括羧基、乙烯基、丙烯酸酯基和腈基。
优选地,所述交联剂水溶液中的交联剂的质量分数不超过20%。
本发明的有益效果在于,使用该浸轧整理方法实现交联固定的纤维素织物具有优良的阻燃性能,在着火时大幅度减少了烟雾的释放,同时兼顾了纤维素织物的力学强度,使其适合纺织加工及使用要求。所制得的纤维素织物经多次标准水洗,仍能保持各项良好性能。
具体实施方式
为了对本发明的技术特征、目的和效果有更加清楚的理解,现详细说明本发明的具体实施方式。
本发明提供了一种耐水洗阻燃抑烟纤维素织物的浸轧整理方法,包括以下步骤:
S1、把纤维素织物浸润在硼氮基有机阻燃剂水溶液中;
S2、当纤维素织物的吸液率达到50%~100%时,把纤维素织物从硼氮基有机阻燃剂水溶液中取出,并放置在100℃~160℃的高温干燥环境中进行加热干燥;
S3、将纤维素织物从高温干燥环境中取出,再把纤维素织物浸润在交联剂水溶液中;
S4、当纤维素织物的吸液率达到50%~100%时,把纤维素织物从交联剂水溶液中取出,并放置在不超过100℃的环境下进行低温干燥,实现交联剂和硼氮基有机阻燃剂在纤维素织物中形成交联的聚合物。
在步骤S1中,硼氮基有机阻燃剂水溶液中硼氮基有机阻燃剂的质量分数不超过20%。硼氮基有机阻燃剂水溶液中的硼氮基有机阻燃剂的分子量在160和100,000之间,硼氮基有机阻燃剂分子中的硼原子与苯环直接通过共价键相连,且氮原子数量多过硼原子数量。
在步骤S3中,交联剂水溶液中的交联剂为带有至少两个功能基团的化合物,功能基团包括不饱和的羧基、乙烯基、丙烯酸酯基和腈基。而且交联剂水溶液中的交联剂的质量分数不超过20%。
本发明的方法可以对比以下非限制性实施例更好地理解。
各种纤维素织物首先使用Pyrovatex CP New混合物(依照供应商的说明书)进行处理以用作对比样。使用锥形量热仪按照GB/T16172-2007(建筑材料热释放速率试验方法)测试方法,把该样品燃烧释放的烟密度(SEA)记作100%。
实施例1
将纯棉卡其布织物浸润在质量分数为20%的对位氨基腈苯硼酸(分子量161,硼含量6.2%)的水溶液中,当吸液率达到70%时,将该织物取出,接着在160℃的高温干燥环境中进行加热干燥。随后,将该织物浸润在质量分数为5%的乙基二乙烯基磷酸(ethyldivinylphosphonate)的水溶液中,当吸液率达到70%时,将该织物取出,接着将其置于室温(25℃)24小时,从而得到实现交联剂和硼氮基有机阻燃剂在纤维素织物中形成交联的聚合物。制得的具有交联聚合物的纤维素织物具有良好的手感和强度。按照GB/T5454-1997(纺织品燃烧性能试验氧指数法)测试,该样品的极限氧指数(LOI)值为30.5,远高于纯棉布的LOI值(18.0)。LOI值是根据标准方法测到的极限氧指数,代表试样点燃需要提供的氧气浓度。LOI值越高,代表试样越难点燃。使用锥形量热仪按照GB/T16172-2007(建筑材料热释放速率试验方法)测试方法进行测试,该纤维素织物样品燃烧释放的烟密度(SEA)减少了89%。按照GB/T3921.1-1997(纺织品色牢度试验耐洗色牢度试验)测试方法,该样品经30次水洗后的LOI值和烟密度(SEA)的减少不超过5%。
实施例2
将纯亚麻平纹织物浸润在质量分数为15%的聚乙烯亚胺多位接枝的对位苯硼酸(分子量3,420,硼含量2.4%)的水溶液中,当吸液率达到60%时,将织物取出,接着在110℃的高温干燥环境中进行加热干燥。随后,将该织物浸润在质量分数为10%的磷氮双丙烯酰胺三聚物(phosphonitrilicdiacrylamide trimer)的水溶液中,当吸液率达到60%时,将该织物取出,接着将其置于70℃的环境中进行干燥。所制得的具有交联聚合物的纤维素织物具有良好的手感和强度。基于GB/T5454-1997(纺织品燃烧性能试验氧指数法)测试方法,该样品的LOI值为31.2;使用锥形量热仪按照GB/T16172-2007(建筑材料热释放速率试验方法)测试方法,该纤维素织物样品燃烧释放的烟密度(SEA)减少了87%。按照GB/T3921.1-1997(纺织品色牢度试验耐洗色牢度试验)测试方法,该样品经30次水洗后的LOI值和烟密度(SEA)的减少不超过5%。
实施例3
将粘胶纤维平纹织物浸润在质量分数15%的甲壳胺多位接枝的对位苯硼酸(分子量100,000,硼含量1.9%)的水溶液中,当吸液率达到70%时,将织物取出,接着在130℃的高温干燥环境中进行加热干燥。随后,将织物浸润在质量分数5%的二乙烯基砜的水溶液中,当吸液率达到70%时,将织物取出,接着将其置于70℃的环境中进行干燥。所制得的具有交联聚合物的纤维素织物具有良好的手感和强度保留。基于GB/T5454-1997(纺织品燃烧性能试验氧指数法)测试方法,该样品的LOI值为29.7;使用锥形量热仪按照GB/T16172-2007(建筑材料热释放速率试验方法)测试方法,该纤维素织物样品燃烧释放的烟密度(SEA)减少了78%。按照GB/T3921.1-1997(纺织品色牢度试验耐洗色牢度试验)测试方法,该样品经30次水洗后的LOI值和烟密度(SEA)的减少不超过5%。从以上三个实施例中也可以看出通过该发明方法制得的织物具有优良的耐水洗性能。
在标准空气条件下,纯纤维素织物很容易被丁烷气火焰点燃,迅速燃烧殆尽。使用本发明方法制得的阻燃抑烟纤维素织物在丁烷气火焰中点燃后离火会自熄,通过标准垂直燃烧测试,该纤维素织物的氧指数达到30以上。在锥形量热仪测试中,使用本发明方法制得的阻燃抑烟纤维素织物较使用常规含磷阻燃剂的纤维素织物在燃烧中产生的烟雾密度明显减少超过75%。
上面对本发明的实施例进行了描述,但是本发明并不局限于上述的具体实施方式,上述的具体实施方式仅仅是示意性的,而不是限制性的,本领域的普通技术人员在本发明的启示下,在不脱离本发明宗旨和权利要求所保护的范围情况下,还可做出很多形式,这些均属于本发明的保护之内。
Claims (5)
1.一种耐水洗阻燃抑烟纤维素织物的浸轧整理方法,其特征在于,包括以下步骤:
S1、把纤维素织物浸润在硼氮基有机阻燃剂水溶液中;
S2、当所述纤维素织物的吸液率达到50%~100%时,把所述纤维素织物从所述硼氮基有机阻燃剂水溶液中取出,并放置在100℃~160℃的高温干燥环境中进行加热干燥;
S3、将所述纤维素织物从高温干燥环境中取出,再把所述纤维素织物浸润在交联剂水溶液中;
S4、当所述纤维素织物的吸液率达到50%~100%时,把纤维素织物从所述交联剂水溶液中取出,并放置在不超过100℃的环境下进行低温干燥,实现交联剂和硼氮基有机阻燃剂在纤维素织物中形成交联的聚合物。
2.根据权利要求1所述的耐水洗阻燃抑烟纤维素织物的浸轧整理方法,其特征在于,在步骤S1中,所述硼氮基有机阻燃剂水溶液中硼氮基有机阻燃剂的质量分数不超过20%。
3.根据权利要求1所述的耐水洗阻燃抑烟纤维素织物的浸轧整理方法,其特征在于,在步骤S1中,所述硼氮基有机阻燃剂水溶液中的硼氮基有机阻燃剂的分子量在160和100,000之间,硼氮基有机阻燃剂分子中的硼原子与苯环直接通过共价键相连,且氮原子数量多过硼原子数量。
4.根据权利要求1所述的耐水洗阻燃抑烟纤维素织物的浸轧整理方法,其特征在于,在步骤S3中,所述交联剂水溶液中的交联剂为带有至少两个功能基团的化合物,所述功能基团包括羧基、乙烯基、丙烯酸酯基和腈基。
5.根据权利要求4所述的耐水洗阻燃抑烟纤维素织物的浸轧整理方法,其特征在于,所述交联剂水溶液中的交联剂的质量分数不超过20%。
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