CN116333263A - 一种支链阻尼型聚氨酯材料及其制备方法与应用 - Google Patents
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Abstract
本发明涉及一种支链阻尼型聚氨酯材料及其制备方法与应用,支链阻尼型聚氨酯材料包括多元醇A组分和聚异氰酸酯B组份,多元醇A组分中的羟基与聚异氰酸酯B组份中的异氰酸酯基比例为1‑1.5:1,其中,多元醇A组分包括如下质量份数的原料组分:支化多元醇8~28份;端羟基小分子1~2份;氨基化合物1~2份;云母6~30份;助剂1份;阻燃填料0~75份;其中,助剂包括如下质量份数的原料组分:分散剂37~63份;消泡剂37~63份。与现有技术相比,本发明制备得到的支链阻尼型聚氨酯材料具有良好的阻尼性能和阻燃性能,且施工简单,固化以及后续的可操作时间可控。
Description
技术领域
本发明涉及甲板涂层材料,尤其是涉及一种支链阻尼型聚氨酯材料及其制备方法与应用。
背景技术
舰船在航行工作中产生的振动与噪声不仅会严重损耗舰船设备本身的性能,更会威胁人体的身心健康及海洋生态系统的正常运转。在舱室的甲板敷料与钢甲板之间,铺设一层适当的阻尼材料,构成约束阻尼结构,当结构发生弯曲振动时,除了在阻尼层内产生拉压变形外,还产生剪切变形。通过剪切变形耗散振动和噪声能量,可限制振动噪声在空气和结构中的传递,是一种有效的减振降噪技术手段。当下的船舶甲板所用的阻尼材料型号众多,但通常需要手工刮涂,施工不便。当下的船舶甲板所用的阻尼材料型号众多,但适用于甲板大面积自流平施工的阻尼层制备方法报道尚未出现。
专利CN104479095A、CN101220132A、CN103140522A等均表明了带支链的聚氨酯阻尼材料通过支链间的摩擦可以耗散振动和噪声能量,从而表现出良好的阻尼性能。目前的研究中,带支链的阻尼材料原料一般运用三羟甲基丙烷和聚酯二元醇来制备阻尼材料,尚未出现使用带有三条支链的改性蓖麻油类化合物(支化多元醇)来制备支链型船用甲板阻尼材料的报道。
发明内容
本发明的目的就是为了克服上述现有技术存在的缺陷而提供一种支链阻尼型聚氨酯材料及其制备方法与应用。
本发明的目的可以通过以下技术方案来实现:
本发明的技术方案之一为提供一种支链阻尼型聚氨酯材料,包括多元醇A组分和聚异氰酸酯B组份,多元醇A组分中的羟基与聚异氰酸酯B组份中的异氰酸酯基比例为1-1.5:1,其中,
多元醇A组分包括如下质量份数的原料组分:
其中,助剂包括如下质量份数的原料组分:
分散剂 37~63份;
消泡剂 37~63份。
进一步地,所述支化多元醇为带有酯基和醚基的支链型的端羟基聚合物,粘度为2500~4000mPa·s,羟基含量为4%。
进一步地,所述端羟基小分子为1,4-丁二醇,羟基含量37.8%。
进一步地,所述氨基化合物为3,3’-二氯-4,4'-二氨基二苯基甲烷,氨基含量为12%。
进一步地,所述阻燃填料选自NH2-C、膨胀石墨200或氢氧化铝中的一种或多种。
进一步地,所述聚异氰酸酯B组份为含苯基的低聚多异氰酸酯,粘度为500mPa·s,异氰酸酯基含量5.1%。
本发明的技术方案之二为提供一种如技术方案之一所述支链阻尼型聚氨酯材料的制备方法,包括如下步骤:
S1、多元醇A组份的制备:
将支链多元醇、端羟基小分子、氨基化合物、云母搅拌混合,在搅拌的同时加入分散剂和阻燃填料,在真空状态下分散30min,最后再加入消泡剂分散10min,制得粘性流体多元醇A组份,密封保存;
S2、将S1步骤得到的多元醇A组份与聚异氰酸酯B组分混合均匀,制备得到的混合物即为支链阻尼型聚氨酯材料。
本发明的技术方案之三为提供一种如技术方案之一所述支链阻尼型聚氨酯材料的应用,所述支链阻尼型聚氨酯材料用于涂抹在舰船甲板上形成减振降噪层。
进一步地,所述支链阻尼型聚氨酯材料的固化时间为10-48h。
进一步地,所述阻尼层固化后与进行下一道工序之间的可操作时间为1-24h。
与现有技术相比,本发明具有如下有益效果:
(1)本发明制备得到的支链阻尼型聚氨酯材料具有良好的阻尼性能,在-48℃~87℃温度范围内,材料损耗因子≥0.3,在室温附近,材料损耗因子约为0.5,铺设于甲板敷料下可使整体结构损耗因子提高0.4倍以上。
(2)本发明制备得到的支链阻尼型聚氨酯材料具有良好的阻燃性能,达UL94-V0级,可通过船舶材料的低播焰测试。
(3)本发明制备得到的支链阻尼型聚氨酯材料可以在室温下性自流平施工,即使钢甲板表面不够平整,阻尼层也能流平为光滑平整的平面。
(4)由于A组分中的端羟基和B组分聚异氰酸酯基的相对运动能力比较强,影响A组分与B组分的交联度,从而对制备得到的支链阻尼型聚氨酯材料的流动性产生影响,因此本发明在制备方法中通过调节多元醇A组份中端羟基小分子的比例和B组分聚异氰酸酯基的比例,使支链阻尼型聚氨酯材料固化时间、以及固化后与进行下一道工序之间的时间可控,适于不同气候条件下的施工要求。
(5)本发明中的支化多元醇是天然多羟基脂肪酸甘油酯改性所制得,价格低廉,通过控制配比,让三条带羟基支链中的一条或者两条剩下不发生反应,从而达到制得支链聚氨酯的效果。并且可以在室温、空气气氛进行反应,制备过程简便。
附图说明
图1为实施例2制备得到的支链阻尼型聚氨酯材料在温度-90℃~130℃范围内的损耗因子。
图2为本发明支链阻尼型聚氨酯材料的制备合成机理。
具体实施方式
下面结合附图和具体实施例对本发明进行详细说明。
以下各实施例和对比例中,如无特别说明的原料或处理技术,则表明其均为本领域的常规市售原料产品或常规处理技术。
其中,
支化多元醇:编号DPH1150,黏度3000m.Pa.s,羟基含量4.7%,主要成分是9-烯基-12-羟基十八酸三甘油酯(C57H104O9);
聚异氰酸酯:编号HJ1880,异氰酸酯基含量4%,主要成分是端异氰酸酯基聚合物。
实施例1:
本实施例提供一种支链阻尼型聚氨酯材料,包括以下质量份数的原料:支化多元醇28份,1,4-丁二醇1份,3,3'-二氯-4,4'-二氨基二苯基甲烷1份,助剂1份(分散剂与消泡剂的质量份数比为63份:37份),云母6份,阻燃填料35份,聚异氰酸酯30份。
制备过程为:
(1)将上述的支化多元醇、1,4-丁二醇和3,3'-二氯-4,4'-二氨基二苯基甲烷加入到双行星式搅拌机中,边搅拌边加入计量的分散剂、云母、阻燃填料,在真空分散30min。此后,加入消泡剂分散10min,制得粘性端羟基聚合物多元醇A组分。
(2)将步骤(1)制备得到的多元醇A组份与聚异氰酸酯B组分在室温下混合均匀,得到的混合物即为支链阻尼型聚氨酯材料。
将支链阻尼型聚氨酯材料倒在清理干净的钢甲板上,用耙子推开,即可自流平为均匀光滑的阻尼层。
实施例2:
本实施例提供一种支链阻尼型聚氨酯材料,包括以下质量份数的原料:支化多元醇28份,1,4-丁二醇2份,3,3'-二氯-4,4'-二氨基二苯基甲烷2份,助剂1份(分散剂与消泡剂的质量份数比为40份:53份),云母6份,阻燃填料40份,聚异氰酸酯30份。
制备过程为:
(1)将上述的支化多元醇、1,4-丁二醇和3,3'-二氯-4,4'-二氨基二苯基甲烷加入到双行星式搅拌机中,边搅拌边加入计量的分散剂、云母、阻燃填料,在真空分散30min。此后,加入消泡剂分散10min,制得粘性端羟基聚合物多元醇A组分。
(2)将步骤(1)制备得到的多元醇A组份与聚异氰酸酯B组分在室温下混合均匀,得到的混合物即为支链阻尼型聚氨酯材料。
将支链阻尼型聚氨酯材料倒在清理干净的钢甲板上,用耙子推开,即可自流平为均匀光滑的阻尼层。
实施例3:
本实施例提供一种支链阻尼型聚氨酯材料,包括以下质量份数的原料:支化多元醇18份,1,4-丁二醇1份,3,3'-二氯-4,4'-二氨基二苯基甲烷1份,助剂1份(分散剂与消泡剂的质量份数比为37份:63份),云母12份,阻燃填料40份,聚异氰酸酯30份。
制备过程为:
(1)将上述的支化多元醇、1,4-丁二醇和3,3'-二氯-4,4'-二氨基二苯基甲烷加入到双行星式搅拌机中,边搅拌边加入计量的分散剂、云母、阻燃填料,在真空分散30min。此后,加入消泡剂分散10min,制得粘性端羟基聚合物多元醇A组分。
(2)将步骤(1)制备得到的多元醇A组份与聚异氰酸酯B组分在室温下混合均匀,得到的混合物即为支链阻尼型聚氨酯材料。
将支链阻尼型聚氨酯材料倒在清理干净的钢甲板上,用耙子推开,即可自流平为均匀光滑的阻尼层。
对实施例1-3制备得到的支链阻尼型聚氨酯材料形成的阻尼层进行了基本性能的测定,结果如表1所示:
表1阻尼层的基本性能参数
性能 | 实施例1 | 实施例2 | 实施例3 | 测试标准或方法 |
可操作时间 | 39h | 34h | 24h | - |
流平性 | 良好 | 良好 | 良好 | - |
有效温域:tanδ≥0.3 | -49-53℃ | -48-87℃ | -29-100℃ | GB/T 18258-2000 |
邵氏A硬度 | 74 | 63 | 71 | GB/T531-1999 |
粘结强度 | 0.6MPa | 0.7MPa | 0.5MPa | GB/T 7124-2008 |
拉伸强度 | 1.4MPa | 1.2MPa | 1.7MPa | GB/T 528-2009 |
断裂伸长率 | 303% | 535% | 309% | GB/T 528-2009 |
阻燃性 | V0 | V0 | V0 | UL94 |
船用材料低播焰测试 | 通过 | 通过 | 通过 | IMOA.653 |
减振效果(100~1600Hz) | 3~10dB | 4~12dB | 4~10dB | SIMO |
从上表结果可以看出,实施例1-3制备得到的支链阻尼型聚氨酯材料形成的阻尼层的阻尼温域宽等优点。
图1为实施例2制备得到的支链阻尼型聚氨酯材料在温度-90℃~130℃范围内的损耗因子,实施例2制备得到的支链阻尼型聚氨酯材料的有效温域在-48-87℃,在室温附近的损耗因子也能达到0.5左右。
图2为本发明支链阻尼型聚氨酯材料的制备合成机理,由支化多元醇、1,4-丁二醇、3,3'-二氯-4,4'-二氨基二苯基甲烷、以及聚异氰酸酯这四个组分在助剂、云母、阻燃填料的协助下制备得到支链阻尼型聚氨酯。
上述的对实施例的描述是为便于该技术领域的普通技术人员能理解和使用发明。熟悉本领域技术的人员显然可以容易地对这些实施例做出各种修改,并把在此说明的一般原理应用到其他实施例中而不必经过创造性的劳动。因此,本发明不限于上述实施例,本领域技术人员根据本发明的揭示,不脱离本发明范畴所做出的改进和修改都应该在本发明的保护范围之内。
Claims (10)
2.根据权利要求1所述的一种支链阻尼型聚氨酯材料,其特征在于,所述支化多元醇为带有酯基和醚基的支链型的端羟基聚合物,粘度为2500~4000mPa·s,羟基含量为4%。
3.根据权利要求1所述的一种支链阻尼型聚氨酯材料,其特征在于,所述端羟基小分子为1,4-丁二醇。
4.根据权利要求1所述的一种支链阻尼型聚氨酯材料,其特征在于,所述氨基化合物为3,3'-二氯-4,4'-二氨基二苯基甲烷。
5.根据权利要求1所述的一种支链阻尼型聚氨酯材料,其特征在于,所述阻燃填料选自NH2-C、膨胀石墨200或氢氧化铝中的一种或多种。
6.根据权利要求1所述的一种支链阻尼型聚氨酯材料,其特征在于,所述聚异氰酸酯B组份为含苯基的低聚多异氰酸酯,粘度为500mPa·s,异氰酸酯基含量5.1%。
7.一种如权利要求1-6任一所述的支链阻尼型聚氨酯材料的制备方法,其特征在于,包括如下步骤:
S1、多元醇A组份的制备:
将支链多元醇、端羟基小分子、氨基化合物、云母搅拌混合,在搅拌的同时加入分散剂和阻燃填料,在真空状态下分散30min,最后再加入消泡剂分散10min,制得粘性流体多元醇A组份,密封保存;
S2、将S1步骤得到的多元醇A组份与聚异氰酸酯B组分混合均匀,制备得到的混合物即为支链阻尼型聚氨酯材料。
8.一种如权利要求1-6任一所述的支链阻尼型聚氨酯材料的应用,其特征在于,所述支链阻尼型聚氨酯材料用于涂抹在舰船甲板上形成阻尼层。
9.根据权利要求8所述的支链阻尼型聚氨酯材料的应用,其特征在于,所述阻尼层的固化时间为10-48h。
10.根据权利要求8所述的支链阻尼型聚氨酯材料的应用,其特征在于,所述阻尼层固化后与进行下一道工序之间的可操作时间为1-24h。
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