CN109251303A - 一种动力电池电芯用阻燃隔热材料 - Google Patents

一种动力电池电芯用阻燃隔热材料 Download PDF

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CN109251303A
CN109251303A CN201810895789.XA CN201810895789A CN109251303A CN 109251303 A CN109251303 A CN 109251303A CN 201810895789 A CN201810895789 A CN 201810895789A CN 109251303 A CN109251303 A CN 109251303A
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李振勇
施浩威
宋春亮
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Zhejiang Qing Excellent Mstar Technology Ltd
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Abstract

本发明请求保护的动力电池电芯用阻燃隔热材料,所述阻燃隔热材料由A组分,及质量占比为所述A组分的20%‑60%的B组分混合反应而成;所述A组分包括如下重量份的原料:多元醇100份;阻燃剂5份‑60份;催化剂0.01份‑3份;发泡剂0.1份‑8份;交联剂1.0份‑15份;泡沫稳定剂0.1份‑5份;所述B组分包括异氰酸酯和/或异氰酸酯衍生物。本发明的阻燃隔热材料,具备隔热性能和阻燃性能,其中导热系数≤0.06,阻燃等级达到UL‑94标准的V0级,满足于动力电池电芯上阻燃隔热的使用需求;同时该阻燃隔热材料制备中采用的A组分与B组分其对应的原料成本低,适用于在动力电池电芯上大面积的使用。

Description

一种动力电池电芯用阻燃隔热材料
技术领域
本发明涉及动力电池相关的技术领域,特别是涉及一种动力电池电芯用阻燃隔热材料。
背景技术
可以理解,电动汽车上的动力电池上电能的储存和释放,是通过电极反应,在化学能和电能之间转化,以目前主流动力电池锂离子电池为例,在充电过程中,锂离子从整机材料中脱嵌经电解液嵌入到负极材料中,而放点过程恰好相反,锂离子从负极材料中脱嵌进入电解液再嵌入到整机材料中。
众所周知,锂离子电池能量密度高,输出功率大,作为电动车动力电池的使用越来越得到认可,但锂离子电池的充放电原理决定了其热不稳定性,特别是在实际工况下,大功率输出,快充功能等都会导致电池在短时间内温度升至安全临界值以上,导致电池循环寿命下降。另一方面,由于电动汽车在极端撞击下,极易造成电池短路,导致电池起火甚至爆炸。
针对以上的技术问题,目前通常用有机硅和气凝胶发泡的产品设置在动力电池的电芯间,以对动力电池的单体电芯间起到阻燃隔热的作用,然而现有的机硅和气凝胶发泡的产品价格昂贵,无法大面积的使用,不能很好地满足企业对于动力电池生产制备的使用需求。
发明内容
基于此,有必要针对上述存在的技术问题,提供一种动力电池电芯用阻燃隔热材料。
一种动力电池电芯用阻燃隔热材料,所述阻燃隔热材料由A组分,及质量占比为所述A组分的20%-60%的B组分混合反应而成;其中,
所述A组分包括如下重量份的原料:多元醇100份;阻燃剂5份-60份;催化剂0.01份-3份;发泡剂0.1份-8份;交联剂1.0份-15份;泡沫稳定剂0.1份-5份;
所述B组分包括异氰酸酯和/或异氰酸酯衍生物。
作为本发明的优选方案,所述多元醇包括聚醚多元醇和/或聚酯多元醇,其中所述聚醚多元醇的分子量为2000-7000,官能度为2以上,所述聚酯多元醇的分子量为500-5000,官能度为2以上。
作为本发明的优选方案,所述阻燃剂包括卤代磷酸酯类、磷酸酯类、三聚氰胺、三聚氰胺盐和/或无机阻燃剂。
作为本发明的优选方案,所述无机阻燃剂包括聚磷酸铵类、包覆红磷、三氧化二锑、膨胀石墨和/或硼酸锌。
作为本发明的优选方案,所述催化剂包括叔胺类催化剂和/或有机锡类催化剂。
作为本发明的优选方案,所述发泡剂为水。
作为本发明的优选方案,:所述交联剂为分子量在50-800的多元醇和多元胺。
作为本发明的优选方案,所述泡沫稳定剂为有机硅表面活性剂。
作为本发明的优选方案,所述A组分还包括泡沫助剂,且所述泡沫助剂的质量占比为所述多元醇的0.5%-5%;所述泡沫助剂包括开孔剂、抗氧化剂、填料和/或色浆。
作为本发明的优选方案,所述异氰酸酯包括脂肪族异氰酸酯和/芳香族异氰酸酯。
由于上述技术手段的应用,本发明相较于现有技术具有如下优点:
本发明所提供的动力电池电芯用阻燃隔热材料,通过A组分与B组分混合反应得到的阻燃隔热材料,具备隔热性能和阻燃性能,其中导热系数≤0.06,阻燃等级达到UL-94标准的V0级,满足于动力电池电芯上阻燃隔热的使用需求;同时该阻燃隔热材料制备中采用的A组分与B组分其对应的原料成本低,适用于在动力电池电芯上大面积的使用,进一步满足动力电池电芯上使用的要求。
具体实施方式
本发明请求保护的动力电池电芯用阻燃隔热材料,具体应用在动力电池的电芯间,以对动力电池电芯起到隔热阻燃的功能。
本实施例的阻燃隔热材料由A组分,及质量占比为所述A组分的20%-60%的B组分混合反应而成,其中,所述A组分与所述B组分在混合时进行了充分混合,并反应得到满足动力电池电芯的隔热阻燃要求的阻燃隔热材料。
其中,所述A组分包括如下重量份的原料:多元醇100份;阻燃剂5份-60份;催化剂0.01份-3份;发泡剂0.1份-8份;交联剂1.0份-15份;泡沫稳定剂0.1份-5份;所述B组分包括异氰酸酯和/或异氰酸酯衍生物。
在本实施例中,所述多元醇包括聚醚多元醇和/或聚酯多元醇,也就是说,本实施例的A组分中多元醇由聚醚多元醇和聚酯多元醇中的其中一种或者两种混合而成。
本实施例的聚醚多元醇的分子量为2000-7000,官能度为2以上,优选地,所述聚醚多元醇的分子量在3000-6000,官能度为3,进一步的,聚醚多元醇的分子量为3000,官能度为3;所述聚酯多元醇的分子量为500-5000,官能度为2以上,优选地,所述聚酯多元醇的分子量为1000-2000,官能度为2。也就是说,本实施例的多元醇为满足以上要求的多元醇一种或者多种混合而成。
所述阻燃剂包括卤代磷酸酯类,磷酸酯类,三聚氰胺,三聚氰胺盐和/或无机阻燃剂。其中所述无机阻燃剂包括聚磷酸铵类,包覆红磷,三氧化二锑,膨胀石墨和/或硼酸锌。
所述催化剂包括叔胺类催化剂和/或有机锡类催化剂。
所述发泡剂为水。
所述交联剂为分子量在50-800的多元醇和多元胺。其中所述交联剂包括乙二醇,丙二醇,三乙醇胺和/或异佛尔酮二胺
所述泡沫稳定剂为表面活性剂,,其中所述泡沫稳定剂包括聚醚改性有机硅,例如由美国迈图公司有机硅表面活性剂的Niax L-566和/或Niax L-620。
作为本发明的优选方案,本实施例的A组分还包括泡沫助剂,并具体根据使用的需求,在A组分中进行添加或者不添加。其中,所述泡沫助剂包括开孔剂,抗氧化剂,填料和/或色浆,且所述泡沫助剂的质量占比为所述多元醇的0.5%-5%。
在本实施例中,所述异氰酸酯包括脂肪族异氰酸酯和/芳香族异氰酸酯,例如甲苯二异氰酸酯,二苯基甲烷二异氰酸酯,异佛尔酮二异氰酸酯,六甲基二异氰酸酯,二环己基甲烷二异氰酸酯,萘二异氰酸酯,对苯二异氰酸酯,多亚甲基多苯基异氰酸酯,三苯基甲烷三异氰酸酯及他们的衍生物。也就是说,本实施例中的B组分可为上述甲苯二异氰酸酯,二苯基甲烷二异氰酸酯,异佛尔酮二异氰酸酯,六甲基二异氰酸酯,二环己基甲烷二异氰酸酯,萘二异氰酸酯,对苯二异氰酸酯,多亚甲基多苯基异氰酸酯,三苯基甲烷三异氰酸酯及他们的衍生物中的一种或多种混合而成。
本实施例中A组分与B组分混合反应得到的阻燃隔热材料,具备隔热性能和阻燃性能,其中该阻燃隔热材料的导热系数≤0.06,阻燃等级达到UL-94标准的V0级,满足于动力电池电芯间对于阻燃隔热的使用要求,同时由于制备该阻燃隔热材料所采用的A组分与B组分其对应的原料成本低,相应地该阻燃隔热材料的成本也低,适用于在动力电池电芯上大面积的使用,进一步满足动力电池电芯上使用的要求。
下面就不同配比的A组分,与不同配比的B组分按照一定比例混合后反应得到的阻燃隔热材料的导热系数,以及阻燃等级UL-94做分别测试。
在实施例中,使用A组分及B组分原料说明如下:
聚醚多元醇:VORANOL 3010,陶氏化学,分子量3000,羟值56mg KOH/g;
聚酯多元醇:CMA-24,EG系列聚酯多元醇,烟台华大化学工业有限公司,分子量2000,羟值53-59;
阻燃剂1:三磷酸酯(二氯丙基),简称TDCP,浙江万盛股份有限公司,
阻燃剂2:包覆红磷,德国Clariant公司Exolit RP 6520;
催化剂:Dabco T-12(二月桂酸二丁基锡),美国空气化工;
泡沫稳定剂:Niax L-620(烷烃悬挂型硅氧烷),美国迈图公司;
B组分为粗MDI,美国Huntsman聚氨酯公司,Suprasec 5005,NCO值30.7%,官能度2.7。
将上述的A组分与B组分以质量比分别为100:20,100:30以及100:60的方式分别进行混合反映并得到相应的阻燃隔热材料,然后将每个阻燃隔热材料分别进行导热系数,以及阻燃等级UL-94测试,并得到相应的试验数据如下:
由上可知,本发明所提供的动力电池电芯用阻燃隔热材料,通过A组分与B组分混合反应得到的阻燃隔热材料,具备隔热性能和阻燃性能,其中导热系数≤0.06,阻燃等级达到UL-94标准的V0级,满足于动力电池电芯上阻燃隔热的使用需求;同时该阻燃隔热材料制备中采用的A组分与B组分其对应的成本低,适用于在动力电池电芯上大面积的使用,进一步满足动力电池电芯上使用的要求。
以上所述实施例的各技术特征可以进行任意的组合,为使描述简洁,未对上述实施例中的各个技术特征所有可能的组合都进行描述,然而,只要这些技术特征的组合不存在矛盾,都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本发明的几种实施方式,其描述较为具体和详细,但并不能因此而理解为对发明专利范围的限制。应当指出的是,对于本领域的普通技术人员来说,在不脱离本发明构思的前提下,还可以做出若干变形和改进,这些都属于本发明的保护范围。因此,本发明专利的保护范围应以所附权利要求为准。

Claims (10)

1.一种动力电池电芯用阻燃隔热材料,其特征在于:所述阻燃隔热材料由A组分,及质量占比为所述A组分的20%-60%的B组分混合反应而成;其中,
所述A组分包括如下重量份的原料:多元醇100份;阻燃剂5份-60份;催化剂0.01份-3份;发泡剂0.1份-8份;交联剂1.0份-15份;泡沫稳定剂0.1份-5份;
所述B组分包括异氰酸酯和/或异氰酸酯衍生物。
2.根据权利要求1所述的动力电池电芯用阻燃隔热材料,其特征在于:所述多元醇包括聚醚多元醇和/或聚酯多元醇,其中所述聚醚多元醇的分子量为2000-7000,官能度为2以上,所述聚酯多元醇的分子量为500-5000,官能度为2以上。
3.根据权利要求1所述的动力电池电芯用阻燃隔热材料,其特征在于:所述阻燃剂包括卤代磷酸酯类、磷酸酯类、三聚氰胺、三聚氰胺盐和/或无机阻燃剂。
4.根据权利要求3所述的动力电池电芯用阻燃隔热材料,其特征在于:所述无机阻燃剂包括聚磷酸铵类、包覆红磷、三氧化二锑、膨胀石墨和/或硼酸锌。
5.根据权利要求1所述的动力电池电芯用阻燃隔热材料,其特征在于:所述催化剂包括叔胺类催化剂和/或有机锡类催化剂。
6.根据权利要求1所述的动力电池电芯用阻燃隔热材料,其特征在于:所述发泡剂为水。
7.根据权利要求1所述的动力电池电芯用阻燃隔热材料,其特征在于:所述交联剂为分子量在50-800的多元醇和多元胺。
8.根据权利要求1所述的动力电池电芯用阻燃隔热材料,其特征在于:所述泡沫稳定剂为有机硅表面活性剂。
9.根据权利要求1所述的动力电池电芯用阻燃隔热材料,其特征在于:所述A组分还包括泡沫助剂,且所述泡沫助剂的质量占比为所述多元醇的0.5%-5%;所述泡沫助剂包括开孔剂、抗氧化剂、填料和/或色浆。
10.根据权利要求1所述的动力电池电芯用阻燃隔热材料,其特征在于:所述异氰酸酯包括脂肪族异氰酸酯和/芳香族异氰酸酯。
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CN115505089A (zh) * 2022-10-11 2022-12-23 力神(青岛)新能源有限公司 一种隔热片及其应用

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