CN110435269A - 一种耐高温防火复合材料及其制备方法 - Google Patents
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Abstract
本发明公开了一种耐高温防火复合材料,包括缓冲泡棉层和云母纸,所述缓冲泡棉层贴合在云母纸上,所述缓冲泡棉层的厚度为0.1~20mm,所述云母纸的厚度为0.1~1.0mm。另外还公开了耐高温防火复合材料的制备方法。本发明耐高温防火复合材料具有良好的缓冲性能,耐高温和绝缘性能佳,且生产成本低,其生产方法简单,可实现批量化生产等优点。
Description
技术领域
本发明涉及复合材料领域,具体为一种耐高温防火复合材料及其制备方法。
背景技术
新能源汽车的动力源主要靠电池包提供驱动电源从而使汽车正常运转,现有的电池包一般包覆有泡棉材料用于缓冲使用过程中的外界冲击力,从而保护电池包内的电芯。但随着电池包使用时间延长,电池包出现老化容易短路起火,但是目前电池包内没有设有任何有效的防火材料,若汽车内部电线短路自燃容易快速蔓延到电池包引起爆炸,大大影响新能源汽车使用的安全性。因此研发一种有效缓冲保护电芯同时具有高耐火高绝缘性能的复合材料为目前迫切解决的技术问题。
发明内容
针对上述技术缺陷,本发明一方提供一种缓冲效果佳,耐火性好,具有良好绝缘性能,成本低廉的耐高温防火复合材料,另一方提供耐高温防火复合材料的制备方法。
本发明提供一种耐高温防火复合材料,包括缓冲泡棉层和云母纸,所述缓冲泡棉层贴合在云母纸上,所述缓冲泡棉层的厚度为0.1~20mm,所述云母纸的厚度为0.1~1.0mm。本发明通过将缓冲泡棉层和云母纸复合一起,其中缓冲泡棉层具有优异的缓冲效能,有效保护产品;同时云母纸具有良好的绝缘性和阻燃性,将云母纸与缓冲泡棉复合形成耐高温防火复合材料可在不改变缓冲泡棉层性质的情况下实现绝缘和阻燃性能,制备成本低;缓冲泡棉厚度小于0.1mm则达不到缓冲外界冲击力的效果,厚度大于20mm则导致制备得到的复合材料不容易弯折,影响电池包整体结构;云母纸的厚度小于0.1mm则达不到耐火绝缘的效果,厚度大于1.0mm则增加生产成本并降低制备得到的复合材料的柔软性。
进一步地,所述云母纸的另一表面亦贴合有第二缓冲泡棉层,所述第二缓冲泡棉层的厚度为0.1~20mm。云母纸双面分部设有缓冲泡棉层和第二缓冲泡棉层使制备得到的耐高温防火复合材料具有优良的柔软性,保证使用过程中对复合材料对电池包包裹的贴合度,缓冲泡棉厚度小于0.1mm则达不到缓冲外界冲击力的效果,厚度大于20mm则导致制备得到的复合材料不容易弯折,影响电池包整体结构。
进一步地,所述缓冲泡棉层的厚度为5~15mm,所述云母纸的厚度为0.3~0.8mm。缓冲泡棉层在此厚度范围内具有较优的缓冲效果,云母纸在此厚度范围内具有较优的耐火绝缘效果。
进一步地,所述缓冲泡棉层的厚度为12mm,所述云母纸的厚度为0.8mm。缓冲泡棉层的厚度为12mm则具有最优的缓冲效果,云母纸的厚度为0.8mm具有最佳的耐火绝缘效果。
进一步地,所述缓冲泡棉层为聚氨酯泡棉层。聚氨酯泡棉层具有良好的缓冲作用,可有效吸收外界冲击力,降低外界冲击力造成的损伤。
本发明另一方面提供了一种耐高温防火纸复合材料的制备方法,在将A、B组份聚氨酯材料搅拌后涂布在云母纸的一面,置于烘箱内经过100℃~120℃烘烤3~6分钟形成缓冲泡棉层,即得耐高温防火复合材料。将搅拌均匀后的A、B组份聚氨酯材料涂覆在云母纸上,同时根据缓冲泡棉的性质在烘箱内100℃~120℃烘烤3~6分钟使缓冲泡棉固化,即可得到单层缓冲泡棉的耐高温防火复合材料,制备方法简单环保。
进一步地,所述云母纸的另一面涂布搅拌均匀的A、B组份聚氨酯材料,置于烘箱内经过100℃~120℃烘烤3~6分钟形成第二缓冲泡棉层,即得耐高温防火复合材料。在云母纸的另一面也涂布搅拌均匀后的A、B组份聚氨酯材料使其成型后形成双面缓冲泡棉层结构,从而有效提高复合材料整体的柔软性及与被包裹产品之间的贴合度。
本发明耐高温防火复合材料及其制备方法,具有如下的有益效果:
第一、具有良好的缓冲性能,耐高温和绝缘性能佳;本发明通过缓冲泡棉和云母纸复合一起,缓冲泡棉利用聚氨酯泡棉的优异缓冲性能,结合云母纸良好的耐高温性和绝缘性能使本发明在高温条件下不容易燃烧受损,有效延长电池包燃烧蔓延的时间,增加车内人员逃生时间;
第二、生产成本低;本发明主要包括缓冲泡棉层和云母纸,均为市面上容易采购获得,生产成本低;
第三、生产工艺简单;本发明制备方法至需要将缓冲泡棉层和云母纸复合,并经过烘烤固化定型后即可得到成品,还可根据对产品性能要求,分别在云母纸单面或双面设置缓冲泡棉层,以得到达到生产要求的耐高温防火复合材料,生产过程无需其他复杂操作,生产工艺简单,容易实现批量化生产。
具体实施方式
为了使本技术领域的人员更好地理解本发明的技术方案,下面结合实施例对本发明作进一步详细的说明。
实施例1
一种耐高温防火复合材料,包括缓冲泡棉层和云母纸,所述缓冲泡棉层为聚氨酯泡棉层,所述缓冲泡棉层贴合在云母纸的表面上,所述缓冲泡棉层的厚度为0.1mm,所述云母纸的厚度为0.1mm。
上述耐高温防火复合材料通过以下方法制备得到:将A、B组份聚氨酯材料搅拌后,涂覆在云母纸上并刮平后,置于烘箱内经过100℃~120℃烘烤3~6分钟后即得聚氨酯云母纸复合材料。
实施例2
一种耐高温防火复合材料,包括缓冲泡棉层和云母纸,所述缓冲泡棉层为聚氨酯泡棉层,所述缓冲泡棉层贴合在云母纸的表面上,所述云母纸的另一面亦贴合有第二缓冲泡棉层,所述缓冲泡棉层的厚度为12mm,所述第二缓冲泡棉层的厚度为12mm,所述云母纸的厚度为0.8mm。
上述耐高温防火复合材料通过以下方法制备得到:将A、B组份聚氨酯材料搅拌后,涂覆在云母纸的一面上并刮平后,置于烘箱内经过100℃~120℃烘烤3~6分钟后形成缓冲泡棉层,在云母纸的另一面涂覆搅拌好的A、B组份聚氨酯材料,置于烘箱内经过100℃~120℃烘烤3~6分钟后形成第二缓冲泡棉层,即得聚氨酯云母纸复合材料。
实施例3
一种耐高温防火复合材料,包括缓冲泡棉层和云母纸,所述缓冲泡棉层为聚氨酯泡棉层,所述缓冲泡棉层贴合在云母纸的表面上,所述缓冲泡棉层的厚度为15mm,所述云母纸的厚度为0.5mm。
上述耐高温防火复合材料通过以下方法制备得到:将A、B组份聚氨酯材料搅拌后,涂覆在云母纸上并刮平后,置于烘箱内经过100℃~120℃烘烤3~6分钟后即得聚氨酯云母纸复合材料。
实施例4
一种耐高温防火复合材料,包括缓冲泡棉层和云母纸,所述缓冲泡棉层为聚氨酯泡棉层,所述缓冲泡棉层贴合在云母纸的表面上,所述云母纸的另一表面贴合有第二缓冲泡棉层,所述缓冲泡棉层的厚度为5mm,所述第二缓冲泡棉层的厚度为5mm,所述云母纸的厚度为0.6mm。
上述耐高温防火复合材料通过以下方法制备得到:将A、B组份聚氨酯材料搅拌后涂布在云母纸的一面上并刮平后,置于烘箱内经过100℃~120℃烘烤3~6分钟后形成缓冲泡棉层,所述云母纸的另一面涂布搅拌后A、B组份聚氨酯材料,置于烘箱内经过100℃~120℃烘烤4~6分钟后形成第二缓冲泡棉层,即得聚氨酯云母纸复合材料。
实施例5
一种耐高温防火复合材料,包括缓冲泡棉层和云母纸,所述缓冲泡棉层为聚氨酯泡棉层,所述缓冲泡棉层贴合在云母纸上,所述缓冲泡棉层的厚度为12mm,所述云母纸的厚度为1.0mm。
上述耐高温防火复合材料通过以下方法制备得到:将A、B组份聚氨酯材料搅拌后,涂覆在云母纸上并刮平后,置于烘箱内经过100℃~120℃烘烤3~6分钟后即得聚氨酯云母纸复合材料。
利用上述实施例1至5和用于制备耐高温防火复合材料的聚氨酯泡棉和云母纸分别进行外部火烧实验,实验方案如下:
1、根据测试要求分别取10×10cm规格的样品作为试样;
2、将试样安装在垂直燃烧测试架上;
3、在试样底部施加1000℃以上的火焰加热;
4、经火焰加热1分钟后观察试样变化。
测试结果见表1。
表1 外部火烧测试结果
组名 | 加热温度(℃) | 外部火烧测试结果 |
实施例1 | 1002 | 云母纸表面轻微碳化,无其他可见损坏;缓冲泡棉层出现高热导致的熔化及沸腾,但未出现明火,且无穿透云母纸的滴落物。 |
实施例2 | 1000 | 与火焰接触的缓冲泡棉层出现熔化且有滴落物;云母纸表面轻微碳化,无其他可见损坏;第二缓冲泡棉层出现高热导致的熔化及沸腾,但未出现明火,且无穿透云母纸的滴落物。 |
实施例3 | 1005 | 云母纸表面轻微碳化,无其他可见损坏;缓冲泡棉层出现高热导致的熔化及沸腾,但未出现明火,且无穿透云母纸的滴落物。 |
实施例4 | 1001 | 与火焰接触的缓冲泡棉层出现熔化且有滴落物;云母纸表面轻微碳化,无其他可见损坏;缓冲泡棉层出现高热导致的熔化及沸腾,但未出现明火,且无穿透云母纸的滴落物。 |
实施例5 | 1000 | 云母纸表面轻微碳化,无其他可见损坏;缓冲泡棉层出现高热导致的熔化及沸腾,但未出现明火,且无穿透云母纸的滴落物。 |
缓冲泡棉(聚氨酯泡棉) | 1000 | 缓冲泡棉熔化且有滴落物。 |
云母纸 | 1002 | 云母纸表面轻微碳化,无其他可见损坏。 |
由以上测试结果对比可见,本发明制备得到的耐高温防火复合材料具有良好的耐高温阻燃性能,可有效延长火焰燃烧对电池包内部的影响,延长汽车自燃时的逃生时间,使用安全性更高。
上述为本发明的较佳实施例而已,并非对本发明作任何形式上的限制;凡本行业的普通技术人员均可按以上所述而顺畅地实施本发明;但是,凡熟悉本专业的技术人员在不脱离本发明技术方案范围内,可利用以上所揭示的技术内容而作出的些许更动、修饰与演变的等同变化,均为本发明的等效实施例;同时,凡依据本发明的实质技术对以上实施例所作的任何等同变化的更动、修饰与演变等,均仍属于本发明的技术方案的保护范围之内。
Claims (7)
1.一种耐高温防火复合材料,其特征在于,包括缓冲泡棉层和云母纸,所述缓冲泡棉层贴合在云母纸的表面上,所述缓冲泡棉层的厚度为0.1~20mm,所述云母纸的厚度为0.1~1.0mm。
2.根据权利要求1所述的耐高温防火复合材料,其特征在于,所述云母纸的另一表面贴合有第二缓冲泡棉层,所述第二缓冲泡棉层的厚度为0.1~20mm。
3.根据权利要求1或2所述的一种耐高温防火复合材料,其特征在于,所述缓冲泡棉层的厚度为5~15mm,所述云母纸的厚度为0.3~0.8mm。
4.根据权利要求1或2所述的一种耐高温防火复合材料,其特征在于,所述缓冲泡棉层的厚度为12mm,所述云母纸的厚度为0.8mm。
5.根据权利要求1或2所述的一种耐高温防火复合材料,其特征在于,所述缓冲泡棉层为聚氨酯泡棉层。
6.一种耐高温防火复合材料的制备方法,其特征在于,将A、B组份聚氨酯材料搅拌后涂布在云母纸的一面,置于烘箱内经过100℃~120℃烘烤3~6分钟形成缓冲泡棉层,即得耐高温防火复合材料。
7.根据权利要求6所述的一种耐高温防火复合材料的制备方法,其特征在于,所述云母纸的另一面涂布搅拌后的A、B组份聚氨酯材料,置于烘箱内经过100℃~120℃烘烤3~6分钟形成第二缓冲泡棉层,即得耐高温防火复合材料。
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