CN107119448B - 一种防火隔热高性能芳纶绳缆 - Google Patents
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Abstract
本发明提供了一种防火隔热高性能芳纶绳缆,其制备方法包括如下步骤:1)将芳纶缆绳经预处理液浸泡处理后,清洗烘干;2)然后浸泡到所配制的功能涂料中形成功能涂层,通过浸泡时间调整调控功能涂层的厚度;浸泡一段时间后取出,进行低温烘烤交联,制得成品。本发明具有如下技术效果:本发明利用涂层技术制备了一种防火隔热高性能芳纶绳缆,采用的阻燃涂层原料具有环保、低烟、低毒的优点,并且该阻燃涂层不会影响绳缆材料的力学性能,遇火燃烧时,涂层先受热成炭,隔绝热量和氧气,起到保护内部绳缆的作用;本发明利用涂层技术制备了一种防火隔热高性能芳纶绳缆,使得涂层在厚度很小的情况下仍然可以获得很好的防火隔热效果。
Description
技术领域
本发明涉及一种防火隔热高性能芳纶绳缆,属于阻燃绳索技术领域。
背景技术
芳纶具有超高强度、高模量和耐高温、耐酸耐碱、重量轻、绝缘、抗老化、生命周期长等优良性能,广泛应用于复合材料、防弹制品、建材、特种防护服装、电子设备等领域。芳纶纤维具有极高的强度,重量比拉伸强度是钢丝的6倍,玻纤的3倍,高强尼龙工业丝的2倍;其拉伸模量是钢丝的3倍,玻纤的2倍,高强尼龙工业丝的10倍;芳纶的连续使用温度范围极宽,在-196℃至204℃范围内可长期正常运行。在150℃下的收缩率为0,在560℃的高温下不分解不熔化。以芳纶纤维编织而成芳纶绳现被广泛应用于:芳纶工程缆绳、辊道绳、吊绳、芳纶安全绳、高空作业绳、牵引绳、芳纶休闲用绳、滑翔伞绳、滑水牵引绳、芳纶海洋救助绳、运输吊装绳、耐刺割绳、耐磨耗芳纶绳、防火阻燃绳、耐高温绳、耐化学腐蚀芳纶绳等对绳子有特殊要求多方领域。特别是作为一种本质阻燃材料,芳纶绳缆在明火、高温环境表现出其他商品化纤维不可取代的优势。
但芳纶是有机纤维耐热性能最差,芳纶绳缆在明火或高温(如300℃)极端条件下,其力学性能急速恶化,当温度达到280℃时,其质量损失达到41%;300℃条件下,5小时后的断裂强力保持80.3%,10小时后还剩61.0%,20小时后仅剩15.0%。当芳纶绳缆用于航空、航天、消防、军事、石化等诸多领域,常常需要绳缆能够在高温或明火环境中作业一定时间,并且保证其一定可使用的残余强度。较为简单的办法就是为芳纶缆绳提供一层保护层,扮演着隔热、阻燃的效果,以保证芳纶缆绳在明火或高温环境中在一定时间内仍能具有一定的强度,达到救援的目的。
发明内容
本发明的目的是:本发明在于克服背景技术中的缺陷,提供了一种防火隔热高性能芳纶绳缆。本专利将为芳纶缆绳提供一种防火隔热涂层,组分选择符合环保化、低毒化和高效化的发展理念。
本发明的技术方案如下:
一种防火隔热高性能芳纶绳缆,其制备方法包括如下步骤:
1)将芳纶缆绳经预处理液浸泡处理后,清洗烘干;
2)然后浸泡到所配制的功能涂料中形成功能涂层,通过浸泡时间调整调控功能涂层的厚度;浸泡一段时间后取出,进行低温烘烤交联,制得成品;
所述的步骤1)中,预处理溶液为硫酸溶液、磷酸溶液或氢氧化钠溶液中的任意一种;
所述的步骤2)中,所述的功能涂料的组分包括壳聚糖、聚乙烯醇、阻燃剂和交联剂;其中,壳聚糖的重量份数为40-80份,聚乙烯醇的重量份数为5-20份;阻燃剂的重量份数为10-40份;交联剂的重量份数为0.5-5份。
所述的阻燃剂为磷杂菲或磷酸酯;所述的交联剂为双官能团的醛或酸酐。
所述的预处理液配制方法如下:直接将酸或碱加到水中,搅拌均匀,所述的硫酸溶液质量百分数为5-20wt%,磷酸溶液质量百分数为20-60wt%,氢氧化钠溶液质量百分数为5-20wt%。
所述的功能涂料配制方法如下:
1)配制壳聚糖溶液:将一定量的壳聚糖加入到2%稀醋酸水溶液中,45-65℃条件下搅拌至壳聚糖溶解完全,得到黄色透明的壳聚糖溶液,壳聚糖溶液的质量百分数为1-5wt%;
2)配制聚乙烯醇溶液:将一定量的聚乙烯醇加入到水中,80-95℃条件下搅拌至聚乙烯醇溶解完全,得到无色的聚乙烯醇溶液,聚乙烯醇溶液的质量百分数为1-10wt%;
3)配制阻燃剂溶液:将一定量的阻燃剂加入到乙醇中,搅拌至阻燃剂溶解完全,得到无色透明的阻燃剂溶液;阻燃剂溶液的浓度为50-150mg/mL;
4)将聚乙烯醇溶液和阻燃剂溶液依次加入到壳聚糖溶液中,搅拌至溶液分散均匀,然后在室温下缓慢加入质量百分数为1-5wt%的交联剂溶液,继续搅拌,得到白色分散均匀的阻燃涂料。
所述的步骤1)和步骤2)中,浸泡时间如下:(根据绳缆编织的方式与股数调整)
所述的步骤2)中,烘烤时间:(依浸泡时间变化,烘烤温度50℃):
所述的涂层工艺,说明如下:
1)根据绳缆粗细和应用要求,通过涂层中阻燃剂的质量分数和浸泡时间来调控绳缆的功能效果;阻燃剂质量分数越大、浸泡时间越长,阻燃隔热效果越好;
2)浸泡后的绳缆摊开到铁架上,在温度45-60℃下进行交联反应,所需要的烘烤时间取决与绳缆粗细和浸泡时间;绳缆越粗、浸泡时间越长,烘烤时间越长。
有益效果
本发明的有益效果是:
本发明利用涂层技术制备了一种防火隔热高性能芳纶绳缆,采用的阻燃涂层原料具有环保、低烟、低毒的优点,并且该阻燃涂层不会影响绳缆材料的力学性能,遇火燃烧时,涂层先受热成炭,隔绝热量和氧气,起到保护内部绳缆的作用;
本发明利用涂层技术制备了一种防火隔热高性能芳纶绳缆,使得涂层在厚度很小的情况下仍然可以获得很好的防火隔热效果,并且可以调控不同厚度的涂层来满足不同阻燃级别的要求;
本发明提出了一种防火隔热高性能芳纶绳缆的制备方法,其制备工艺流程简单、合理,并且采用低温交联固化,能够节约能源、降低成本;
本发明公开的防火隔热高性能芳纶绳缆可以克服传统芳纶阻燃绳缆在明火燃烧下力学性能急剧恶化的缺点。
具体实施方式
下面结合具体实施例,进一步阐述本发明。应理解,这些实施例仅用于说明本发明而不用于限制本发明的范围。此外应理解,在阅读了本发明讲授的内容之后,本领域技术人员可以对本发明作各种改动或修改,这些等价形式同样落于本申请所附权利要求书所限定的范围。
实施例1
本实施例的防火隔热高性能芳纶绳缆的制备方法,包括如下步骤:
1.将编织好的12股芳纶绳缆用水洗涤并干燥,随后加入到质量分数为20%的磷酸溶液中,于20℃下浸泡30min,取出后用蒸馏水洗涤至中性。
预处理溶液配制方法如下:直接将酸加到水中,搅拌均匀。
2.将绳缆浸泡于功能涂料中,浸泡时间为30min后取出进行低温交联固化,烘烤温度50℃,烘烤时间5h,制得防火隔热高性能芳纶绳缆。所述功能涂料包含下列组分:
组分 | 组分具体名称 | 含量(重量份数) |
壳聚糖 | 壳聚糖 | 40份 |
聚乙烯醇 | 聚乙烯醇 | 5份 |
阻燃剂 | 磷酸三苯酯 | 40份 |
交联剂 | 戊二醛 | 1份 |
功能涂料配制方法如下:
1)配制壳聚糖溶液:将一定量的壳聚糖加入到2%稀醋酸水溶液中,45-65℃条件下搅拌至壳聚糖溶解完全,得到黄色透明的壳聚糖溶液,壳聚糖溶液的质量百分数为1wt%;
2)配制聚乙烯醇溶液:将一定量的聚乙烯醇加入到水中,80-95℃条件下搅拌至聚乙烯醇溶解完全,得到无色的聚乙烯醇溶液,聚乙烯醇溶液的质量百分数为5wt%;
3)配制阻燃剂溶液:将一定量的阻燃剂加入到乙醇中,搅拌至阻燃剂溶解完全,得到无色透明的阻燃剂溶液;阻燃剂溶液的浓度为50mg/mL;
4)将聚乙烯醇溶液和阻燃剂溶液依次加入到壳聚糖溶液中,搅拌至溶液分散均匀,然后在室温下缓慢加入质量百分数为3wt%的交联剂溶液,继续搅拌,得到白色分散均匀的阻燃涂料。
实施例2
本实施例的防火隔热高性能芳纶绳缆的制备方法,包括如下步骤:
1.将编织好的12股芳纶绳缆用水洗涤并干燥,随后加入到质量分数为40%的磷酸预处理溶液中,于20℃下浸泡20min,取出后用蒸馏水洗涤至中性。
预处理溶液配制方法同实施例1。
2.将绳缆浸泡于功能涂料中,浸泡时间为20min后取出进行低温交联固化,烘烤温度50℃,烘烤时间2h,制得防火隔热高性能芳纶绳缆。所述功能涂料包含下列重量份的组分:
组分 | 组分具体名称 | 含量(重量份数) |
壳聚糖 | 壳聚糖 | 57份 |
聚乙烯醇 | 聚乙烯醇 | 20份 |
阻燃剂 | DOPO | 20份 |
交联剂 | 戊二醛 | 5份 |
功能涂料配制方法如下:
1)配制壳聚糖溶液:将一定量的壳聚糖加入到2%稀醋酸水溶液中,45-65℃条件下搅拌至壳聚糖溶解完全,得到黄色透明的壳聚糖溶液,壳聚糖溶液的质量百分数为2wt%;
2)配制聚乙烯醇溶液:将一定量的聚乙烯醇加入到水中,80-95℃条件下搅拌至聚乙烯醇溶解完全,得到无色的聚乙烯醇溶液,聚乙烯醇溶液的质量百分数为1wt%;
3)配制阻燃剂溶液:将一定量的阻燃剂加入到乙醇中,搅拌至阻燃剂溶解完全,得到无色透明的阻燃剂溶液;阻燃剂溶液的浓度为100mg/mL;
4)将聚乙烯醇溶液和阻燃剂溶液依次加入到壳聚糖溶液中,搅拌至溶液分散均匀,然后在室温下缓慢加入质量百分数为1wt%的交联剂溶液,继续搅拌,得到白色分散均匀的阻燃涂料。
实施例3
本实施例的防火隔热高性能芳纶绳缆的制备方法,包括如下步骤:
1.将编织好的12股芳纶绳缆用水洗涤并干燥,随后加入到质量分数为60%的磷酸溶液中,于20℃下浸泡10min,取出后用蒸馏水洗涤至中性。
预处理溶液配制方法同实施例1。
2.将绳缆浸泡于功能涂料中,浸泡时间为10min后取出进行低温交联固化,烘烤温度50℃,烘烤时间1h,制得防火隔热高性能芳纶绳缆。所述功能涂料包含下列重量份的组分:
组分 | 组分具体名称 | 含量(重量份数) |
壳聚糖 | 壳聚糖 | 80份 |
聚乙烯醇 | 聚乙烯醇 | 10份 |
阻燃剂 | 甲基磷酸二乙酯 | 10份 |
交联剂 | 戊二醛 | 0.5份 |
功能涂料配制方法如下:
1)配制壳聚糖溶液:将一定量的壳聚糖加入到2%稀醋酸水溶液中,45-65℃条件下搅拌至壳聚糖溶解完全,得到黄色透明的壳聚糖溶液,壳聚糖溶液的质量百分数为5wt%;
2)配制聚乙烯醇溶液:将一定量的聚乙烯醇加入到水中,80-95℃条件下搅拌至聚乙烯醇溶解完全,得到无色的聚乙烯醇溶液,聚乙烯醇溶液的质量百分数为10wt%;
3)配制阻燃剂溶液:将一定量的阻燃剂加入到乙醇中,搅拌至阻燃剂溶解完全,得到无色透明的阻燃剂溶液;阻燃剂溶液的浓度为150mg/mL;
4)将聚乙烯醇溶液和阻燃剂溶液依次加入到壳聚糖溶液中,搅拌至溶液分散均匀,然后在室温下缓慢加入质量百分数为5wt%的交联剂溶液,继续搅拌,得到白色分散均匀的阻燃涂料。
实施例4
对实施例1-3进行以下燃烧试验和耐高温拉伸试验,测试结果如下:
1.芳纶绳索明火燃烧试验:芳纶绳索垂直悬挂,使用酒精灯对芳纶绳索进行明火燃烧,直至绳缆断裂,记录绳缆断裂时间和阴燃时间。
2.芳纶绳索耐高温拉伸试验:芳纶绳索在负载20%断裂强力条件下,使用液化气喷灯对芳纶绳索进行明火燃烧,,测绳缆残余强力。
明火燃烧试验:
无涂层 | 实施例1 | 实施例2 | 实施例3 | |
断裂时间(min) | 13.5 | 17.5 | 20 | 18.3 |
阴燃时间(min) | 3.5 | 0.2 | 0.1 | 0.2 |
耐高温拉伸试验(绳缆残余强力)
无涂层 | 实施例1 | 实施例2 | 实施例3 | |
0 | 145.2kN | 144.9kN | 145.0kN | 144.8kN |
0.5min | 62.6kN | 93.2kN | 100.7kN | 99.6kN |
3min | 3.8kN | 21.2kN | 27.3kN | 23.6kN |
从上表可以看出:请结合数据对效果进行总结说明
本发明的防火隔热高性能芳纶绳缆经明火燃烧后,其断裂时间显著增加,而且阴燃时间得到明显降低。其次,相比于传统芳纶绳缆,本发明的防火隔热高性能芳纶绳缆在1000℃明火中暴露30s后,其残余强力仍保留64%以上,而未处理芳纶绳缆的力学性能急剧恶化,残余强力仅仅只保留43%。因此本发明制备的防火隔热高性能芳纶绳缆在明火或高温环境中作业一定时间仍能具有一定的强度,达到救援的目的。
Claims (4)
1.一种防火隔热高性能芳纶绳缆,其特征在于,其制备方法包括如下步骤:
1)将芳纶缆绳经预处理液浸泡处理后,清洗烘干;
2)然后浸泡到所配制的功能涂料中形成功能涂层,通过浸泡时间调整调控功能涂层的厚度;浸泡一段时间后取出,进行低温烘烤交联,制得成品;
所述的步骤1)中,预处理溶液为硫酸溶液、磷酸溶液或氢氧化钠溶液中的任意一种;
所述的步骤2)中,所述的功能涂料的组分包括壳聚糖、聚乙烯醇、阻燃剂和交联剂;其中,壳聚糖的重量份数为40-80份,聚乙烯醇的重量份数为5-20份;阻燃剂的重量份数为10-40份;交联剂的重量份数为0.5-5份;
所述的步骤1)和步骤2)中,浸泡时间如下:
;
所述的步骤2)中,低温烘烤温度为50℃,烘烤时间如下:
。
2.根据权利要求1所述的防火隔热高性能芳纶绳缆,其特征在于,所述的阻燃剂为磷杂菲或磷酸酯;所述的交联剂为双官能团的醛或酸酐。
3.根据权利要求1所述的防火隔热高性能芳纶绳缆,其特征在于,所述的预处理液配制方法如下:直接将酸或碱加到水中,搅拌均匀,所述的硫酸溶液质量百分数为5-20wt%,磷酸溶液质量百分数为20-60wt%,氢氧化钠溶液质量百分数为5-20wt%。
4.根据权利要求1所述的防火隔热高性能芳纶绳缆,其特征在于,所述的功能涂料配制方法如下:
1)配制壳聚糖溶液:将一定量的壳聚糖加入到2%稀醋酸水溶液中,45-65℃条件下搅拌至壳聚糖溶解完全,得到黄色透明的壳聚糖溶液,壳聚糖溶液的质量百分数为1-5wt%;
2)配制聚乙烯醇溶液:将一定量的聚乙烯醇加入到水中,80-95℃条件下搅拌至聚乙烯醇溶解完全,得到无色的聚乙烯醇溶液,聚乙烯醇溶液的质量百分数为1-10wt%;
3)配制阻燃剂溶液:将一定量的阻燃剂加入到乙醇中,搅拌至阻燃剂溶解完全,得到无色透明的阻燃剂溶液;阻燃剂溶液的浓度为50-150mg/mL;
4)将聚乙烯醇溶液和阻燃剂溶液依次加入到壳聚糖溶液中,搅拌至溶液分散均匀,然后在室温下缓慢加入质量百分数为1-5wt%的交联剂溶液,继续搅拌,得到白色分散均匀的阻燃涂料。
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