CN106833194A - 一种电缆用的阻燃耐火涂层料及其制备方法 - Google Patents

一种电缆用的阻燃耐火涂层料及其制备方法 Download PDF

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CN106833194A
CN106833194A CN201710042865.8A CN201710042865A CN106833194A CN 106833194 A CN106833194 A CN 106833194A CN 201710042865 A CN201710042865 A CN 201710042865A CN 106833194 A CN106833194 A CN 106833194A
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flame
coating material
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emulsion
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朱江
张佳庆
徐曼
范明豪
郑浩
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Xian Jiaotong University
Electric Power Research Institute of State Grid Anhui Electric Power Co Ltd
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Electric Power Research Institute of State Grid Anhui Electric Power Co Ltd
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Abstract

一种电缆用的阻燃耐火涂层料及其制备方法,按质量份数计包括100份的乳液基料,95~130份的脱水剂,35~40份的膨胀剂,30~38份的成炭剂,15~30份的可膨胀石墨,5~10份的金属氧化物,5~10份的乙撑双硬脂酰胺,5~10份的二氧化硅,80~130份的去离子水。用本发明所制的涂层料具有很高的阻燃效率;本发明所采用的EBS,能够有效地改善粉末材料的分散性,避免团聚现象的发生;同时还可防止结块,并提高涂层料的耐水性和风干后的表面光滑性。燃烧性能的测试表明,在燃烧时间方面、放热量方面以及释烟量方面,本发明的性能均优于现有产品。

Description

一种电缆用的阻燃耐火涂层料及其制备方法
技术领域
本发明涉及阻燃材料技术领域,具体涉及一种电缆用的阻燃耐火涂层料及其制备方法。
背景技术
近年来,随着电缆用量的迅猛增长,电缆火灾事故的发生率也呈现出明显的增加趋势。相关统计数据表明,城市中有超过60%的火灾是由于电器设备故障或电缆负荷过载引起电缆燃烧蔓延而造成的。因此,对电缆进行防火阻燃处理变得尤为重要,涂刷阻燃耐火涂层料就是常用的方法之一。
电缆防火涂料本身难燃或不燃,遇火时能分解出不燃性气体或形成防火隔热保护层,从而阻止电缆的受热分解和燃烧。根据受火状态的不同,电缆防火涂料大致分为非膨胀型和膨胀型,其中后者用量少、总体经济性好,故更为常见。一般的膨胀型防火涂料的主要成分是高聚物基料、难燃或不燃填料及膨胀型阻燃剂等。
可膨胀石墨(EG)是一种典型的物理膨胀型阻燃剂,它在高温条件下可迅速膨胀数百倍,膨胀后的主要成分是炭,能够耐700℃的高温,在火灾中能够抵抗火焰的侵袭,进而发挥有效的隔热、隔氧作用。然而,单独使用EG时,复合体系的阻燃效率不高,且形成的炭层较为疏松,因此常需利用不同种类阻燃剂之间的协同阻燃作用来大幅提高阻燃效果。有专利公开了一种含有EG和氢氧化镁的阻燃涂料,它用片状纳米级氢氧化镁代替普通氢氧化镁,从而达到了降低填充量、提高阻燃效率的目的。但片状纳米氢氧化镁的制备设备与工艺均较为复杂,制造成本相对较高,且复合材料燃烧时生成的氧化镁等物质会使炭层变得更为疏松。
发明内容
本发明的目的是提供一种电缆用的阻燃耐火涂层料及其制备方法,利用EG的膨胀、阻燃性能,在其添加量较低的情况下制成了电缆用的高效阻燃耐火涂层料,该耐火涂层料具有无毒环保、成本低廉、配伍合理、耐高温、抗腐蚀的优点,且其遇火生成的炭层结构致密、阻燃耐火性能优越。
为实现上述目的,本发明采用如下的技术方案:
一种电缆用的阻燃耐火涂层料,按照质量份数计,包括100份的乳液基料,95~130份的脱水剂,35~40份的膨胀剂,30~38份的成炭剂,15~30份的可膨胀石墨,5~10份的金属氧化物,5~10份的乙撑双硬脂酰胺,5~10份的二氧化硅以及80~130份的去离子水。
本发明进一步的改进在于,所述乳液基料为丙烯酸乳液、EVA乳液、聚醋酸乙烯乳液、丁苯乳液、丙苯乳液、醋苯乳液中的一种或多种。
本发明进一步的改进在于,所述脱水剂为聚磷酸铵、磷酸氢二铵、磷酸锌、磷酸铝、磷酸铵镁、硼酸锌中的一种或多种。
本发明进一步的改进在于,所述膨胀剂为三聚氰胺、双氰胺、聚磷酸铵、硼酸胺、三聚氰胺氰尿酸盐中的一种或多种。
本发明进一步的改进在于,所述成炭剂为季戊四醇、双季戊四醇、甘露醇、山梨醇、淀粉中的一种或多种。
本发明进一步的改进在于,所述金属氧化物为氧化锌、氧化镁、氧化镍、二氧化钛、三氧化二铝中的一种或多种。
本发明进一步的改进在于,所述二氧化硅的粒径小于3微米。
一种电缆用的阻燃耐火涂层料的制备方法,包括以下步骤:
1)称料:按照质量份数计,100份的乳液基料,95~130份的脱水剂,35~40份的膨胀剂,30~38份的成炭剂,15~30份的可膨胀石墨,5~10份的金属氧化物,5~10份的乙撑双硬脂酰胺,5~10份的二氧化硅以及80~130份的去离子水;
2)混合:将脱水剂、膨胀剂、成炭剂、金属氧化物、可膨胀石墨、乙撑双硬脂酰胺、SiO2依次加入到高速搅拌机中混合均匀;再向高速搅拌机中依次加入乳液基料和去离子水,在室温下以1000~2000转/分钟的速度搅拌25~40分钟,得到阻燃耐火涂层料。
与现有技术相比,本发明具有的有益效果:
本发明利用EG(可膨胀石墨)的膨胀、阻燃性能,在其添加量较低的情况下制成了一种电缆用的高效阻燃耐火涂层料。本发明通过调整脱水剂、膨胀剂和成炭剂的比例,配制出了阻燃效率较高的膨胀型阻燃剂,能在复合材料燃烧时促进基体树脂脱水成炭,并生成炭质阻燃泡沫层。将其与EG共用,可显著改善复合材料的成炭速率和受热膨胀倍数,从而更好地隔热、隔氧、抑烟、防滴。本发明所引入的金属氧化物和SiO2,能催化脱水成炭反应的进行,且有助于致密炭层的形成。因此,本发明所获的涂层料具有很高的阻燃效率。燃烧性能的测试表明,本发明所获的耐火涂层料在燃烧时间方面、放热量方面以及释烟量方面均优于现有产品的性能。
进一步的,本发明中二氧化硅的粒径小于3微米,可使粉体材料更均匀地分散。
本发明制备时,所采用的EBS,能够有效地改善粉末材料的分散性,避免团聚现象的发生;同时还可防止结块,并提高涂层料的耐水性和风干后的表面光滑性。本发明所采用的去离子水,能够降低涂料的粘度,使粉体材料更易均匀分散,利于加工制造。
具体实施方式
为了使本发明的目的、技术方案和优点更加清楚明白,以下结合实例进行进一步详细说明,此处所描述实例仅用于解释本发明,并不用于限定本发明。
实施例1
一种电缆用的阻燃耐火涂层,按照质量计,包括10kg的丙烯酸乳液,11kg的聚磷酸铵,3.6kg的三聚氰胺氰尿酸盐,3.5kg的季戊四醇,2.5kg的可膨胀石墨(EG),0.5kg的氧化锌,0.5kg的乙撑双硬脂酰胺(EBS),0.5kg的二氧化硅(SiO2)以及9.5kg的去离子水。
上述电缆的阻燃耐火涂层料的制备方法,包括以下步骤:
1)称料:10kg的丙烯酸乳液,11kg的聚磷酸铵,3.6kg的三聚氰胺氰尿酸盐,3.5kg的季戊四醇,2.5kg的可膨胀石墨(EG),0.5kg的氧化锌,0.5kg的乙撑双硬脂酰胺(EBS),0.5kg粒径小于3微米的二氧化硅(SiO2)以及9.5kg的去离子水。
2)混合:将称量好的聚磷酸铵、三聚氰胺氰尿酸盐、季戊四醇、氧化锌、EG、EBS、SiO2依次加入到高速搅拌机中混合均匀;再向高速搅拌机中依次加入乳液基料和去离子水,在室温下以1500转/分钟的速度搅拌35分钟,得到阻燃耐火涂层料。
实施例2
一种电缆用的阻燃耐火涂层,按照质量份数计,包括100份的乳液基料,95份的脱水剂,40份的膨胀剂,30份的成炭剂,15份的可膨胀石墨,6份的金属氧化物,10份的乙撑双硬脂酰胺,5份粒径小于3微米的二氧化硅以及90份的去离子水。
上述电缆用的阻燃耐火涂层料的制备方法,包括以下步骤:
按上述质量份数将脱水剂、膨胀剂、成炭剂、金属氧化物、可膨胀石墨、乙撑双硬脂酰胺、二氧化硅依次加入到高速搅拌机中混合均匀;再向高速搅拌机中依次加入乳液基料和去离子水,在室温下以1000转/分钟的速度搅拌40分钟,得到阻燃耐火涂层料。
其中,所述乳液基料为丙烯酸乳液。
所述脱水剂为聚磷酸铵。
所述膨胀剂为三聚氰胺。
所述成炭剂为多羟基化合物或含碳丰富的聚合物,具体为季戊四醇。
所述金属氧化物为氧化锌。
实施例3
一种电缆用的阻燃耐火涂层,按照质量份数计,包括100份的乳液基料,130份的脱水剂,35份的膨胀剂,32份的成炭剂,20份的可膨胀石墨,7份的金属氧化物,8份的乙撑双硬脂酰胺,7份粒径小于3微米的二氧化硅以及80份的去离子水。
上述电缆用的阻燃耐火涂层料的制备方法,包括以下步骤:
按上述质量份数将脱水剂、膨胀剂、成炭剂、金属氧化物、可膨胀石墨、乙撑双硬脂酰胺、二氧化硅依次加入到高速搅拌机中混合均匀;再向高速搅拌机中依次加入乳液基料和去离子水,在室温下以2000转/分钟的速度搅拌25分钟,得到阻燃耐火涂层料。
其中,所述乳液基料为EVA乳液与聚醋酸乙烯乳液的混合物。
所述脱水剂为磷酸氢二铵、磷酸锌与磷酸铝的混合物。
所述膨胀剂为双氰胺。
所述成炭剂为双季戊四醇与甘露醇的混合物。
所述金属氧化物为氧化镁、氧化镍与二氧化钛的混合物。
实施例4
一种电缆用的阻燃耐火涂层,按照质量份数计,包括100份的乳液基料,110份的脱水剂,38份的膨胀剂,38份的成炭剂,27份的可膨胀石墨,8份的金属氧化物,7份的乙撑双硬脂酰胺,9份粒径小于3微米的二氧化硅以及110份的去离子水。
上述电缆用的阻燃耐火涂层料的制备方法,包括以下步骤:
按上述质量份数将脱水剂、膨胀剂、成炭剂、金属氧化物、可膨胀石墨、乙撑双硬脂酰胺、二氧化硅依次加入到高速搅拌机中混合均匀;再向高速搅拌机中依次加入乳液基料和去离子水,在室温下以1500转/分钟的速度搅拌30分钟,得到阻燃耐火涂层料。
其中,所述乳液基料为丁苯乳液、丙苯乳液与醋苯乳液的混合物。
所述脱水剂为磷酸铝、磷酸铵镁与硼酸锌的混合物。
所述膨胀剂为三聚氰胺氰尿酸盐。
所述成炭剂为山梨醇与淀粉的混合物。
所述金属氧化物为二氧化钛与三氧化二铝的混合物。
实施例5
一种电缆用的阻燃耐火涂层,按照质量份数计,包括100份的乳液基料,120份的脱水剂,40份的膨胀剂,37份的成炭剂,30份的可膨胀石墨,10份的金属氧化物,6份的乙撑双硬脂酰胺,10份粒径小于3微米的二氧化硅以及130份的去离子水。
上述电缆用的阻燃耐火涂层料的制备方法,包括以下步骤:
按上述质量份数将脱水剂、膨胀剂、成炭剂、金属氧化物、可膨胀石墨、乙撑双硬脂酰胺、二氧化硅依次加入到高速搅拌机中混合均匀;再向高速搅拌机中依次加入乳液基料和去离子水,在室温下以2000转/分钟的速度搅拌30分钟,得到阻燃耐火涂层料。
其中,所述乳液基料为聚醋酸乙烯乳液、丁苯乳液与丙苯乳液的混合物。
所述脱水剂为磷酸铵镁与硼酸锌的混合物。
所述膨胀剂为聚磷酸铵。
所述成炭剂为甘露醇、山梨醇与淀粉的混合物。
所述金属氧化物为氧化镁与氧化镍的混合物。
为考察本发明所获得的阻燃耐火涂层料的性能,用锥形量热仪分别测试实施例1所获涂料(记为1#)和市售某品牌耐火涂层料(记为2#)的燃烧特性。实验时,先用刷笔将1#、2#涂料分若干道分别涂刷在两块100mm×100mm×1mm的钢板上,并控制其晾干后的厚度为(3.0±0.1)mm,再用锥形量热仪测试试样的燃烧性能。锥形量热仪的热辐射强度为50kW/m2,测试结果见表1。
表1测试结果
由表1可知,在燃烧时间方面,1#涂料的TTI、t-pHRR值均明显小于2#涂料。这表明1#涂料比2#涂料需要更多的辐射热量才能被引燃,且1#涂料达到火焰最旺盛(热释放速率最大)时的耗时也长于2#涂料,故1#涂料的阻燃性能优于2#。
在放热量方面,1#涂料的THR、pHRR值均小于2#涂料,即无论是在总放热量上,还是在瞬时放热量上,1#涂料都比2#涂料更有优势,所以1#涂料的阻燃耐火性能更佳。
在释烟量方面,1#涂料的生烟速率SPR比2#涂料小,因此1#涂料的性能更好。
本发明制得的阻燃耐火涂层料的使用方法为:用刷笔将涂料分若干道涂刷在电缆表面,涂膜厚度为1mm~3mm,也可根据实际防火要求确定涂膜厚度。具体操作时,先涂第1道涂层,等表面晾干后,再涂第2道。按照这种方法逐次涂刷,直到达到目标厚度为止。

Claims (8)

1.一种电缆用的阻燃耐火涂层料,其特征在于,按照质量份数计,包括100份的乳液基料,95~130份的脱水剂,35~40份的膨胀剂,30~38份的成炭剂,15~30份的可膨胀石墨,5~10份的金属氧化物,5~10份的乙撑双硬脂酰胺,5~10份的二氧化硅以及80~130份的去离子水。
2.根据权利要求1所述的一种电缆用的阻燃耐火涂层料,其特征在于,所述乳液基料为丙烯酸乳液、EVA乳液、聚醋酸乙烯乳液、丁苯乳液、丙苯乳液、醋苯乳液中的一种或多种。
3.根据权利要求1所述的一种电缆用的阻燃耐火涂层料,其特征在于,所述脱水剂为聚磷酸铵、磷酸氢二铵、磷酸锌、磷酸铝、磷酸铵镁、硼酸锌中的一种或多种。
4.根据权利要求1所述的一种电缆用的阻燃耐火涂层料,其特征在于,所述膨胀剂为三聚氰胺、双氰胺、聚磷酸铵、硼酸胺、三聚氰胺氰尿酸盐中的一种或多种。
5.根据权利要求1所述的一种电缆用的阻燃耐火涂层料,其特征在于,所述成炭剂为季戊四醇、双季戊四醇、甘露醇、山梨醇、淀粉中的一种或多种。
6.根据权利要求1所述的一种电缆用的阻燃耐火涂层料,其特征在于,所述金属氧化物为氧化锌、氧化镁、氧化镍、二氧化钛、三氧化二铝中的一种或多种。
7.根据权利要求1所述的一种电缆用的阻燃耐火涂层料,其特征在于,所述二氧化硅的粒径小于3微米。
8.一种电缆用的阻燃耐火涂层料的制备方法,其特征在于,包括以下步骤:
1)称料:按照质量份数计,100份的乳液基料,95~130份的脱水剂,35~40份的膨胀剂,30~38份的成炭剂,15~30份的可膨胀石墨,5~10份的金属氧化物,5~10份的乙撑双硬脂酰胺,5~10份的二氧化硅以及80~130份的去离子水;
2)混合:将脱水剂、膨胀剂、成炭剂、金属氧化物、可膨胀石墨、乙撑双硬脂酰胺、SiO2依次加入到高速搅拌机中混合均匀;再向高速搅拌机中依次加入乳液基料和去离子水,在室温下以1000~2000转/分钟的速度搅拌25~40分钟,得到阻燃耐火涂层料。
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CN108504148A (zh) * 2018-05-11 2018-09-07 长安大学 一种耐热绝缘陶瓷涂层及其制备方法
CN109370333A (zh) * 2018-10-26 2019-02-22 公安部四川消防研究所 一种用于电缆的阻燃涂料

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CN104774540A (zh) * 2014-04-10 2015-07-15 北京理工阻燃科技有限公司 一种纳米防火涂料及其制备方法
CN105176242A (zh) * 2015-10-10 2015-12-23 徐州市三为水性漆科技有限公司 水性环保膨胀型防火新材料及其制备方法

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CN104774540A (zh) * 2014-04-10 2015-07-15 北京理工阻燃科技有限公司 一种纳米防火涂料及其制备方法
CN105176242A (zh) * 2015-10-10 2015-12-23 徐州市三为水性漆科技有限公司 水性环保膨胀型防火新材料及其制备方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108504148A (zh) * 2018-05-11 2018-09-07 长安大学 一种耐热绝缘陶瓷涂层及其制备方法
CN109370333A (zh) * 2018-10-26 2019-02-22 公安部四川消防研究所 一种用于电缆的阻燃涂料

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