CN104177685A - 一种红外反射/发射隔热塑料功能母料及其制备方法 - Google Patents
一种红外反射/发射隔热塑料功能母料及其制备方法 Download PDFInfo
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Abstract
本发明涉及塑料技术领域,特别是涉及一种红外反射/发射隔热塑料功能母料及其制备方法;本发明包括按照重量百分比计算的预分散红外反射纳米材料5%~40%、红外发射颜填料5%~50%、中空微珠5%~20%、表面处理剂0.1%~5%、合成树脂20%~48.9%和助剂1%~10%。由本发明母料制作的红外反射/发射隔热塑料在很多领域能代替红外反射隔热涂料,不仅避免了涂料喷涂时的费时费力,还避免有机溶剂挥发造成的环境污染。
Description
技术领域
本发明涉及塑料技术领域,特别是涉及一种红外反射/发射隔热塑料功能母料及其制备方法。
背景技术
太阳给地球的光和热使万物得以生长和延续。太阳能作为一种能源已经被人类予以充分的认识并不断地加以利用。太阳造福地球,造福自然,造福人类。但和任何事物都有着正反两方面的作用一样,过量的太阳光热也给地球、自然和人类带来了许多麻烦,甚至形成灾害。现代社会随着地球的不断变暖,过量的太阳热辐射是河湖干涸、土地沙化,危及着人类的生存;强烈的城市热岛效应,让人们忍受着难耐的高温。人类在采取种种办法克服了太阳带来的麻烦。超量的太阳热辐射使石油化工储罐的外表温度达到了七八十度,为了能安全生产,人们不得不加厚储罐的钢板厚度,不得不喷淋水给其降温。粮库的温度升高,加速了粮食的劣变过程乃至生产虫害,不得不耗费人力物力缩短粮食的倒仓时间。船舶、车辆的升温严重影响着其性能发挥,制冷降温耗费了过多的燃料。建筑厂房及住宅的升温,至使大量地使用空间调耗了大量的电能及大量使用氟利昂,以至人们在取得凉爽的同时,又进一步加剧了城市的热岛效应。所有这些都与过量太阳热辐射有着绝大的关系,它给人类带来了麻烦。为此,人们已经研制出许多用于隔热或反射热量的如材料泡沫塑料、中空板、中空砖、防暴膜、红外反射隔热涂料等等。
泡沫塑料、中空板和中空砖主要起阻隔隔热的作用,它降低或减缓热量的传递速度,但不能阻挡热量的传递,时间久了,物体内部温度还是会缓慢升高;红外反射隔热涂料改变热量的传递方向,可将吸收的热量发射出去,使物体内部温度得到缓慢降低,故红外反射隔热比阻隔隔热效果要好。
目前红外反射隔热技术多在涂料上应用,国内出现了很多红外反射隔热涂料方面的专利或论文,而红外反射隔热塑料则非常少见。但是,红外反射隔热涂料是在建筑物或其它被覆盖物施工或竣工之后进行使用,喷涂时费时费力,并且涂料常含有挥发性有机溶剂,易造成环境污染。
发明内容
为了解决上述问题,本发明的目的在于,提供一种具有反射/发射隔热功能,同时对环境友好的红外反射/发射隔热塑料功能母料。
本发明的目的之二是提供所述红外反射/发射隔热塑料功能母料的制备方法。
本发明的目的之三是提供了一种红外反射/发射隔热塑料。
本发明是通过以下技术方案来实现的:
一种红外反射隔热塑料功能母料,包括按照重量百分比计算的以下物质:
其中,所述红外反射纳米材料为纳米锑(Sb)掺杂二氧化锡(SnO2)半导体粉体或/和纳米铈(Ce)掺杂二氧化锡(SnO2)半导体粉体红外材料。
较佳地,所述红外发射颜填料为二氧化钛(TiO2)、氧化锌(ZnO)、二氧化硅(SiO2)或三氧化二铝(Al2O3)中的一种或几种组合物。
较佳地,所述红外发射颜填料可为微米级或纳米级。
较佳地,所述中空微珠为中空陶瓷微珠、中空玻璃微珠,其粒径可在10μm~100μm范围内。
较佳地,所述表面处理剂为硬脂酸、硅烷偶联剂、铝酸酯偶联剂、钛酸酯偶联剂等等。
较佳地,所述合成树脂为聚乙烯(PE)、聚丙烯树脂(PP)、聚氯乙烯树脂(PVC)、聚苯乙烯树树脂(PS)、丙烯腈-丁二烯-苯乙烯三元共聚物ABS、ASA(ASA树脂是由苯乙烯、丙烯腈和压克力橡胶等三元聚合物共聚合而成的一种抗冲改性树脂)、聚碳酸酯PC、聚对苯二甲酸乙二酯PET、聚对苯二甲酸丁二酯PBT、聚甲基丙烯酸甲酯PMMA等。
较佳地,所述其他助剂包括润滑剂、相容剂、抗氧剂、紫外线吸收剂等。
制备所述红外反射/发射隔热塑料功能母料方法,包括如下制备步骤:
步骤A.红外反射纳米材料与溶剂、润湿剂、分散剂混合,然后进入砂磨机、球磨机或超声波分散器,充分分散之后,经过滤除去杂质,减压除去溶剂,再干燥而得预分散红外反射纳米材料;溶剂为纯净水、乙醇、丙醇、丙酮等的一种或多种的混合物。
步骤B.除了中空微珠之外的所有组分经转速为1000~1500转/分钟的高速混合10~20分钟之后,再加入中空微珠低速混合,得到预混料;
步骤C.预混料经过双螺杆挤出机挤出造粒,得到所述红外反射/发射隔热塑料功能母料;其中螺杆转速为100~400转/分钟,挤出温度因为不同的树脂要求不同而设定不同的温度。
一种红外反射/发射隔热塑料,由所述的红外反射/发射隔热塑料功能母料制得。
本发明包括按照重量百分比计算的预分散红外反射纳米材料、红外发射颜填料、中空微珠、表面处理剂、合成树脂和助剂。其中,纳米掺杂SnO2半导体具有很高的红外光反射率,可把红外光再次辐射回大气层中,减少物体对红外光的透过和吸收,从而起到降温作用;红外发射颜填料具有较高的折光指数,对光的反射率高,可将全波段的光发射出去;中空微珠具有中空结构,导热系数较小,其阻隔隔热效果非常显著。本发明提供的红外反射/发射隔热塑料功能母料,以它制作的红外反射/发射隔热塑料在很多领域代替红外反射隔热涂料,避免了涂料喷涂时的费时费力,以及避免有机溶剂挥发造成的环境污染。
本发明制得的红外反射/发射隔热塑料对太阳红外光辐射具有高的反射率,能阻隔热的传导,且在长波段上能将吸收的部分能量发射出去,从而在不消耗外界能量的情况下降低表面温度的功能性材料。它可以降低暴露在太阳光下物体表面的温度,从而阻止热能传导,达到改善环境,节省能源,提高安全性等目的。红外反射/发射隔热塑料可用于建筑方面如阳光板、塑料彩瓦、塑钢门窗型材、墙体隔热层、体育馆或车站穹顶膜(片)材等,交通工具方面可做车厢顶板、围板等。
具体的实施方式
下面结合具体实施方式对本发明作进一步的详细说明,以助于本领域技术人员理解本发明。
实施例1
一种红外反射/发射隔热塑料功能母料,包括按照重量百分比计算的预分散红外反射纳米材料5%、红外发射颜填料(TiO2)50%、中空微珠(中空陶瓷微珠)5%、表面处理剂(硬脂酸)5%、合成树脂(PE)30%和助剂5%。
制备所述红外反射/发射隔热塑料功能母料方法,包括如下制备步骤:
步骤A.红外反射纳米材料与分散介质、润湿剂、分散剂混合,然后进入砂磨机、球磨机或超声波分散器,充分分散之后,经过滤除去杂质,减压除去溶剂,再干燥而得预分散红外反射纳米材料;
步骤B.除了中空微珠之外的所有组分经转速为1000~1500转/分钟的高速混合10~20分钟之后,再加入中空微珠低速混合,得到预混料;
步骤C.预混料经过双螺杆挤出机挤出造粒,得到所述红外反射/发射隔热塑料功能母料。
实施例2
一种红外反射/发射隔热塑料功能母料,包括按照重量百分比计算的预分散红外反射纳米材料40%、红外发射颜填料(ZnO)5%、中空微珠(中空玻璃微珠)20%、表面处理剂(铝酸酯偶联剂)5%、合成树脂(PMMA)20%和助剂10%。
制备所述红外反射/发射隔热塑料功能母料方法,同具体实施例1。
实施例3
一种红外反射/发射隔热塑料功能母料,包括按照重量百分比计算的预分散红外反射纳米材料10%、红外发射颜填料(Al2O3)25%、中空微珠(中空陶瓷微珠5%和中空玻璃微珠10%)15%、表面处理剂(钛酸酯偶联剂)0.1%、合成树脂(ABS)48.9%和助剂1%。
制备所述红外反射/发射隔热塑料功能母料方法,同具体实施例1。
实施例4
一种红外反射/发射隔热塑料功能母料,包括按照重量百分比计算的预分散红外反射纳米材料35%、红外发射颜填料(TiO25%和ZnO10%)15%、中空微珠(中空陶瓷微珠5%和中空玻璃微珠5%)10%、表面处理剂(硬脂酸1%、硅烷偶联剂1%和铝酸酯偶联剂1%)3%、合成树脂(PS2%、ASA18%和PET10%)30%和助剂7%。
制备所述红外反射/发射隔热塑料功能母料方法,同具体实施例1。
实施例5
一种红外反射/发射隔热塑料功能母料,包括按照重量百分比计算的预分散红外反射纳米材料29%、红外发射颜填料(ZnO)22%、中空微珠(中空玻璃微珠)8%、表面处理剂(铝酸酯偶联剂)2.5%、合成树脂(ASA)35%和助剂3.5%。
制备所述红外反射/发射隔热塑料功能母料方法,同具体实施例1。
上述实施例,只是本发明的较佳实施例,并非用来限制本发明实施范围,故凡以本发明权利要求所述的特征及原理所做的等效变化或修饰,均应包括在本发明权利要求范围之内。
检测数据:
检测方法为以上实施例的母料制成片材,以100W的红外线灯泡,在距离红外反射/发射隔热塑料片材和普通塑料片材上方10cm的地方分别照射30min,然后测试片材反面温度,测试结果见下表。可见红外反射隔热塑料片材具有很好反射隔热、降温效果。
Claims (10)
1.一种红外反射/发射隔热塑料功能母料,其特征在于,包括按照重量百分比计算的以下物质:
2.根据权利要求1所述的红外反射/发射隔热塑料功能母料,其特征在于,所述红外反射纳米材料为纳米锑掺杂二氧化锡半导体粉体或/和纳米铈掺杂二氧化锡半导体粉体红外材料。
3.根据权利要求1所述的红外反射/发射隔热塑料功能母料,其特征在于,所述红外发射颜填料为二氧化钛、氧化锌、二氧化硅或三氧化二铝中的一种或几种组合物。
4.根据权利要求3所述的红外反射/发射隔热塑料功能母料,其特征在于,所述红外发射颜填料为微米级或纳米级。
5.根据权利要求1所述的红外反射/发射隔热塑料功能母料,其特征在于,所述中空微珠为中空陶瓷微珠或中空玻璃微珠,所述中空微珠的粒径为10μm~100μm。
6.根据权利要求1所述的红外反射/发射隔热塑料功能母料,其特征在于,所述表面处理剂为硬脂酸、硅烷偶联剂、铝酸酯偶联剂或钛酸酯偶联剂中的一种或几种组合。
7.根据权利要求1所述的红外反射/发射隔热塑料功能母料,其特征在于,所述合成树脂为聚乙烯、聚丙烯树脂、聚氯乙烯树脂、聚苯乙烯树树脂、丙烯腈-丁二烯-苯乙烯三元共聚物、ASA、聚碳酸酯、聚对苯二甲酸乙二酯、聚对苯二甲酸丁二酯、聚甲基丙烯酸甲酯中的一种或几种组合物。
8.根据权利要求1所述的红外反射/发射隔热塑料功能母料,其特征在于,所述助剂为润滑剂、相容剂、抗氧剂或紫外线吸收剂中的一种或几种组合物。
9.制备权利要求1-8中任意一项所述红外反射/发射隔热塑料功能母料方法,其特征在于,包括如下制备步骤:
步骤A.红外反射纳米材料与溶剂、润湿剂、分散剂混合,然后进入砂磨机、球磨机或超声波分散器,充分分散之后,经过滤除去杂质,减压除去溶剂,再干燥而得预分散红外反射纳米材料;
步骤B.除了中空微珠之外的所有组分经高速混合之后,再加入中空微珠低速混合,得到预混料;
步骤C.预混料经过双螺杆挤出机挤出造粒,得到所述红外反射/发射隔热塑料功能母料。
10.一种红外反射/发射隔热塑料,其特征在于,由权利要求1-9中任意一项所述的红外反射/发射隔热塑料功能母料制得。
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