CN112625426A - 一种应用于轨道交通的热塑性发泡聚氨酯材料及制备方法 - Google Patents
一种应用于轨道交通的热塑性发泡聚氨酯材料及制备方法 Download PDFInfo
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Abstract
本发明公开了一种应用于轨道交通的热塑性发泡聚氨酯材料,由以下成分组成:热塑性聚氨酯颗粒、交联剂、氧化铈、硬脂酸钠、阻燃剂、氢氧化镁、氢氧化铝、白炭黑、滑石粉、纳米二氧化钛、分散剂、色料、抗氧化剂、耐黄变促进剂、安定剂、发泡剂、胶膜和骨料纤维。本发明采用了纳米二氧化钛加入聚氨酯胶膜的方式进行抗菌处理,还在聚氨酯发泡材料中加入了羟基化玻璃纤维,相比于传统的玻璃纤维,其与胶膜的粘结效果更佳,更有利于纳米二氧化钛在胶膜中的分散;本发明中还加入了稀土氧化铈与无机抗菌剂相结合,从而提升其抗菌效果。本发明的热塑性发泡聚氨酯材料对大肠杆菌、金黄色葡萄球菌和白色念珠菌的抑菌率均达到99%以上。
Description
技术领域
本发明涉及热塑性发泡聚氨酯材料技术领域,尤其涉及一种应用于轨道交通的热塑性发泡聚氨酯材料及制备方法。
背景技术
轨道交通车辆是运载量较大的交通工具,属于流动性环境,由于人流量大、使用频繁,地面十分容易受污染及破坏,日常遇到下雨及外部环境污染因素,地面污染随人流鞋底带入车厢,直接影响车内环境及地面整洁,以及乘客所携行李的多种多样,也会对地板布造成损坏。轨道列车对美观要求高,防烟火性能要求严格,可维护性要求高,而且高铁或动车的建造,要求材料需要轻体,占用空间小,在地面材料中,地砖、大理石、木地板、地毯等,都不具备这种要求。
TPU材料具有耐磨、耐低温、无味、无毒、量轻、质薄等特性,并且兼有塑料的可加工性能和橡胶的物理机械性能,在汽车工业、医疗卫生、生活用品等领域应用广泛,但是TPU材料的研究及开发难度较大,虽然现在国内的常规客车地板布多为国内自主生产,并能满足使用要求,但在高铁、动车、城轨列车上使用的地板布多为国外进口产品,价格高昂,对耐老化、阻燃、耐摩擦等性能有较高的要求,但是在抗菌抑菌方面没有具体的要求,而我们知道轨道交通作为封闭体系,且打扫的频率偏低,存在细菌滋生的环境风险,为了达到更好的人民身体健康安全的要求,有必要研究一种具有抗菌抑菌效果的应用于轨道交通的热塑性发泡聚氨酯材料及其制备方法。
发明内容
基于背景技术存在的技术问题,本发明提出了一种应用于轨道交通的热塑性发泡聚氨酯材料及制备方法。
本发明的技术方案如下:
一种应用于轨道交通的热塑性发泡聚氨酯材料,由以下重量百分比的成分组成:热塑性聚氨酯颗粒50-60%、交联剂0.6-1.5%、氧化铈0.2-0.3%、硬脂酸钠0.5-0.8%、阻燃剂1.2-3.5%、氢氧化镁3-5%、氢氧化铝5-8%、白炭黑3-6%、滑石粉8-12%、纳米二氧化钛0.2-0.5%、分散剂0.8-1.5%、色料0.8-3.5%、抗氧化剂0.8-1.5%、耐黄变促进剂0.2-0.5%、安定剂0.7-1.1%、发泡剂0.5-0.8%、胶膜5-8%和骨料纤维余量。
优选的,所述的阻燃剂为三氧化二锑和磷系阻燃剂混合而成的阻燃剂。
优选的,所述的分散剂由饱和及不饱和脂肪酸锌混合而成。
优选的,所述的耐黄变促进剂为耐黄变促进剂Em-33。
优选的,所述的安定剂为钡与锌安定剂。
优选的,所述的胶膜由聚氨酯溶液加入到浓缩天然胶乳中干燥而成。
优选的,所述的骨料纤维为羟基化玻璃纤维。
一种应用于轨道交通的热塑性发泡聚氨酯材料的制备方法,包括以下步骤:
A、将热塑性聚氨酯颗粒与白炭黑、滑石粉、硬脂酸钠、氢氧化镁、氢氧化铝、抗氧化剂、分散剂、阻燃剂、耐黄变促进剂和安定剂混合并进行混炼,混炼温度为120-125℃,混炼时间为12-15min;
B、加入交联剂、发泡剂、色料和骨料纤维,继续进行混炼6-10min,温度为130-135℃;
C、将混炼后的混合物进行110-120℃造粒、150-160℃发泡,然后再进行压纹得到热塑性聚氨酯板材;
D、制备抗菌胶膜乳液:按质量比将聚氨酯溶液滴加到3-5倍的浓缩天然胶乳中,加入纳米二氧化钛和氧化铈,在氮气氛围下,以600-800r/min的速度进行搅拌反应20-30min并加入氨水,得到均匀的白色乳液,即为胶膜乳液;
E、将胶膜乳液涂覆在热塑性聚氨酯板材上,待成膜、干燥后,即可得到本发明所述的热塑性发泡聚氨酯材料。
本发明的有益之处在于:一种应用于轨道交通的热塑性发泡聚氨酯材料,由以下重量百分比的成分组成:热塑性聚氨酯颗粒50-60%、交联剂0.6-1.5%、氧化铈0.2-0.3%、硬脂酸钠0.5-0.8%、阻燃剂1.2-3.5%、氢氧化镁3-5%、氢氧化铝5-8%、白炭黑3-6%、滑石粉8-12%、纳米二氧化钛0.2-0.5%、分散剂0.8-1.5%、色料0.8-3.5%、抗氧化剂0.8-1.5%、耐黄变促进剂0.2-0.5%、安定剂0.7-1.1%、发泡剂5-8%、胶膜0.5-0.8%和骨料纤维余量。本发明的橡胶地板材料为了达到更好的抗菌抑菌效果,采用了纳米二氧化钛加入聚氨酯胶膜的方式进行抗菌处理,同时为了达到更好的抗菌效果,还在聚氨酯发泡材料中加入了羟基化玻璃纤维作为骨料纤维,相比于传统的玻璃纤维,其与胶膜的粘结效果更佳,更有利于纳米二氧化钛在胶膜中的分散;本发明中还加入了稀土氧化铈与无机抗菌剂纳米二氧化钛相结合,有利于进一步提升纳米二氧化钛的活性,从而提升其抗菌效果。本发明的热塑性发泡聚氨酯材料对大肠杆菌、金黄色葡萄球菌和白色念珠菌的抑菌率均达到99%以上。
具体实施方式
实施例1
一种应用于轨道交通的热塑性发泡聚氨酯材料,由以下重量百分比的成分组成:热塑性聚氨酯颗粒55%、交联剂0.8%、氧化铈0.25%、硬脂酸钠0.7%、阻燃剂2.5%、氢氧化镁4%、氢氧化铝6%、白炭黑5%、滑石粉10%、纳米二氧化钛0.35%、分散剂1.2%、色料2.0%、抗氧化剂0.9%、耐黄变促进剂0.3%、安定剂0.9%、发泡剂0.6%、胶膜5.5%和骨料纤维余量。
所述的阻燃剂为三氧化二锑和磷系阻燃剂质量比为3:1的混合物。
所述的分散剂由饱和及不饱和脂肪酸锌混合而成。
所述的耐黄变促进剂为耐黄变促进剂Em-33。
所述的安定剂为钡与锌安定剂。
所述的胶膜由聚氨酯溶液加入到浓缩天然胶乳中干燥而成。
所述的骨料纤维为羟基化玻璃纤维。
一种应用于轨道交通的热塑性发泡聚氨酯材料的制备方法,包括以下步骤:
A、将热塑性聚氨酯颗粒与白炭黑、滑石粉、硬脂酸钠、氢氧化镁、氢氧化铝、抗氧化剂、分散剂、阻燃剂、耐黄变促进剂和安定剂混合并进行混炼,混炼温度为122℃,混炼时间为13min;
B、加入交联剂、发泡剂、色料和骨料纤维,继续进行混炼8min,温度为133℃;
C、将混炼后的混合物进行115℃造粒、158℃发泡,然后再进行压纹得到热塑性聚氨酯板材;
D、制备抗菌胶膜乳液:按质量比将聚氨酯溶液滴加到4倍的浓缩天然胶乳中,加入纳米二氧化钛和氧化铈,在氮气氛围下,以650r/min的速度进行搅拌反应25min并加入氨水,得到均匀的白色乳液,即为胶膜乳液;
E、将胶膜乳液涂覆在热塑性聚氨酯板材上,待成膜、干燥后,即可得到本发明所述的热塑性发泡聚氨酯材料。
实施例2
一种应用于轨道交通的热塑性发泡聚氨酯材料,由以下重量百分比的成分组成:热塑性聚氨酯颗粒50%、交联剂0.6%、氧化铈0.3%、硬脂酸钠0.5%、阻燃剂3.5%、氢氧化镁5%、氢氧化铝8%、白炭黑3%、滑石粉12%、纳米二氧化钛0.2%、分散剂1.5%、色料0.8%、抗氧化剂1.5%、耐黄变促进剂0.2%、安定剂1.1%、发泡剂0.5%、胶膜8%和骨料纤维余量。
所述的阻燃剂为三氧化二锑和磷系阻燃剂质量比为1:1的混合物。
所述的分散剂由饱和及不饱和脂肪酸锌混合而成。
所述的耐黄变促进剂为耐黄变促进剂Em-33。
所述的安定剂为钡与锌安定剂。
所述的胶膜由聚氨酯溶液加入到浓缩天然胶乳中干燥而成。
所述的骨料纤维为羟基化玻璃纤维。
一种应用于轨道交通的热塑性发泡聚氨酯材料的制备方法,包括以下步骤:
A、将热塑性聚氨酯颗粒与白炭黑、滑石粉、硬脂酸钠、氢氧化镁、氢氧化铝、抗氧化剂、分散剂、阻燃剂、耐黄变促进剂和安定剂混合并进行混炼,混炼温度为125℃,混炼时间为12min;
B、加入交联剂、发泡剂、色料和骨料纤维,继续进行混炼10min,温度为130℃;
C、将混炼后的混合物进行120℃造粒、150℃发泡,然后再进行压纹得到热塑性聚氨酯板材;
D、制备抗菌胶膜乳液:按质量比将聚氨酯溶液滴加到5倍的浓缩天然胶乳中,加入纳米二氧化钛和氧化铈,在氮气氛围下,以600r/min的速度进行搅拌反应30min并加入氨水,得到均匀的白色乳液,即为胶膜乳液;
E、将胶膜乳液涂覆在热塑性聚氨酯板材上,待成膜、干燥后,即可得到本发明所述的热塑性发泡聚氨酯材料。
实施例3
一种应用于轨道交通的热塑性发泡聚氨酯材料,由以下重量百分比的成分组成:热塑性聚氨酯颗粒60%、交联剂1.5%、氧化铈0.2%、硬脂酸钠0.8%、阻燃剂1.2%、氢氧化镁3%、氢氧化铝5%、白炭黑3%、滑石粉8%、纳米二氧化钛0.5%、分散剂0.8%、色料3.5%、抗氧化剂0.8%、耐黄变促进剂0.5%、安定剂0.7%、发泡剂0.8%、胶膜5%和骨料纤维余量。
所述的阻燃剂为三氧化二锑和磷系阻燃剂质量比为2:1的混合物。
所述的分散剂由饱和及不饱和脂肪酸锌混合而成。
所述的耐黄变促进剂为耐黄变促进剂Em-33。
所述的安定剂为钡与锌安定剂。
所述的胶膜由聚氨酯溶液加入到浓缩天然胶乳中干燥而成。
所述的骨料纤维为羟基化玻璃纤维。
一种应用于轨道交通的热塑性发泡聚氨酯材料的制备方法,包括以下步骤:
A、将热塑性聚氨酯颗粒与白炭黑、滑石粉、硬脂酸钠、氢氧化镁、氢氧化铝、抗氧化剂、分散剂、阻燃剂、耐黄变促进剂和安定剂混合并进行混炼,混炼温度为120℃,混炼时间为15min;
B、加入交联剂、发泡剂、色料和骨料纤维,继续进行混炼6min,温度为135℃;
C、将混炼后的混合物进行110℃造粒、160℃发泡,然后再进行压纹得到热塑性聚氨酯板材;
D、制备抗菌胶膜乳液:按质量比将聚氨酯溶液滴加到3倍的浓缩天然胶乳中,加入纳米二氧化钛和氧化铈,在氮气氛围下,以800r/min的速度进行搅拌反应20min并加入氨水,得到均匀的白色乳液,即为胶膜乳液;
E、将胶膜乳液涂覆在热塑性聚氨酯板材上,待成膜、干燥后,即可得到本发明所述的热塑性发泡聚氨酯材料。
对比例1
将实施例1中的氧化铈去除,其余配比和制备方法不变。
对比例2
将实施例1中的羟基化玻璃纤维替换为常规的玻璃纤维,其余配比和制备方法不变。
以下对实施例1-3和对比例1-2公开的热塑性发泡聚氨酯材料进行抗菌性检测,得到如下检测数据,具体检测数据见表1,检测方法参照ISO22196-2011塑料与其他无孔表面的抗菌性测定方法。
表1:实施例1-3和对比例1-2公开的热塑性发泡聚氨酯材料抗菌性检测结果;
抗菌率% | 实施例1 | 实施例2 | 实施例3 | 对比例1 | 对比例2 |
金黄色葡萄球菌 | 99.8 | 99.8 | 99.7 | 92.4 | 94.6 |
白色念珠菌 | 99.5 | 99.6 | 99.5 | 90.4 | 93.1 |
大肠杆菌 | 99.9 | 99.9 | 99.9 | 93.7 | 96.2 |
由以上测试数据可以知道,本发明的热塑性发泡聚氨酯材料具有非常好的抗菌抑菌效果。
以上所述,仅为本发明较佳的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,根据本发明的技术方案及其发明构思加以等同替换或改变,都应涵盖在本发明的保护范围之内。
Claims (8)
1.一种应用于轨道交通的热塑性发泡聚氨酯材料,其特征在于,由以下重量百分比的成分组成:热塑性聚氨酯颗粒50-60%、交联剂0.6-1.5%、氧化铈0.2-0.3%、硬脂酸钠0.5-0.8%、阻燃剂1.2-3.5%、氢氧化镁3-5%、氢氧化铝5-8%、白炭黑3-6%、滑石粉8-12%、纳米二氧化钛0.2-0.5%、分散剂0.8-1.5%、色料0.8-3.5%、抗氧化剂0.8-1.5%、耐黄变促进剂0.2-0.5%、安定剂0.7-1.1%、发泡剂0.5-0.8%、胶膜5-8%和骨料纤维余量。
2.如权利要求1所述的应用于轨道交通的热塑性发泡聚氨酯材料,其特征在于,所述的阻燃剂为三氧化二锑和磷系阻燃剂混合而成的阻燃剂。
3.如权利要求1所述的应用于轨道交通的热塑性发泡聚氨酯材料,其特征在于,所述的分散剂由饱和及不饱和脂肪酸锌混合而成。
4.如权利要求1所述的应用于轨道交通的热塑性发泡聚氨酯材料,其特征在于,所述的耐黄变促进剂为耐黄变促进剂Em-33。
5.如权利要求1所述的应用于轨道交通的热塑性发泡聚氨酯材料,其特征在于,所述的安定剂为钡与锌安定剂。
6.如权利要求1所述的应用于轨道交通的热塑性发泡聚氨酯材料,其特征在于,所述的胶膜由聚氨酯溶液加入到浓缩天然胶乳中干燥而成。
7.如权利要求1所述的应用于轨道交通的热塑性发泡聚氨酯材料,其特征在于,所述的骨料纤维为羟基化玻璃纤维。
8.一种应用于轨道交通的热塑性发泡聚氨酯材料的制备方法,其特征在于,包括以下步骤:
A、将热塑性聚氨酯颗粒与白炭黑、滑石粉、硬脂酸钠、氢氧化镁、氢氧化铝、抗氧化剂、分散剂、阻燃剂、耐黄变促进剂和安定剂混合并进行混炼,混炼温度为120-125℃,混炼时间为12-15min;
B、加入交联剂、发泡剂、色料和骨料纤维,继续进行混炼6-10min,温度为130-135℃;
C、将混炼后的混合物进行110-120℃造粒、150-160℃发泡,然后再进行压纹得到热塑性聚氨酯板材;
D、制备抗菌胶膜乳液:按质量比将聚氨酯溶液滴加到3-5倍的浓缩天然胶乳中,加入纳米二氧化钛和氧化铈,在氮气氛围下,以600-800r/min的速度进行搅拌反应20-30min并加入氨水,得到均匀的白色乳液,即为胶膜乳液;
E、将胶膜乳液涂覆在热塑性聚氨酯板材上,待成膜、干燥后,即可得到本发明所述的热塑性发泡聚氨酯材料。
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