CN114891297A - 一种复合epp/相变材料及其制备方法 - Google Patents
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Abstract
本发明公开了一种复合EPP/相变材料,它是由下述方法制备的:1)将聚丙烯100‑120份、改性剂4‑6份、矿物添加剂6‑10份、分散剂2‑5份、抗氧剂1‑2份混合,紫外光下照射15~25分钟;微波处理8~12分钟,造粒;2)再将步骤1)制备的颗粒100份与发泡液10‑15份加压浸渍2.5~3.5小时,泄压,制备发泡的改性EPP载体;3)将相变材料融化,再将改性EPP载体浸渍在融化的相变材料中,真空下保持1.5~2.5小时,滤掉多余相变材料,得到复合EPP/相变材料;有益效果:提升了聚丙烯基体对相变材料的亲和性,提升改性聚丙烯的热稳定性;解决相变材料的泄漏问题。
Description
技术领域
本发明属于复合材料及其制备领域,涉及一种复合EPP/相变材料及其制备方法。
背景技术
日益增长的能源需求压力迫使人们寻找新的能源,如开发利用天然气、核能等,或者提高能源的有效利用效率,从而延长能源的使用时间。研究储能和节能的新技术是解决全人类所面临的能源危机问题的有效途径,这对于实现能源的可持续发展有非常重要的意义。潜热储存由于其较大的能量存储密度和能量储存过程中较小的温度变化,以及良好的稳定性和高安全性已成为当今世界上流行的储能方式。然而,相比储能在应用中存在一个严重的问题,就是在相态转变过程中容易发生液体泄。将相变材料与大比表面积的多孔载体复合,形成定形复合相变材料是解决相变材料固有缺陷,拓展其应用领域的重要手段。
EPP是发泡聚丙烯的缩写(Expanded polypropylene),是一种新型泡沫塑料的简称。EPP以其密度小,比强度高,抗击性好,隔热性与隔音性好等特点得到广泛应用。由于其内部具有发达的孔道结构,能够大量负载相变材料,从而提高复合相变材料的焓值。同时,EPP较小的孔隙提供的毛细作用力有利于相变材料泄漏问题的解决。然而,聚丙烯材料与相变材料亲和性不足的问题仍然是导致相变材料泄漏的一个因素。
发明内容
本发明目的是为了提升EPP与相变材料的亲和性,以解决相变材料的泄漏问题,同时提升相变材料的负载量,提升复合相变材料的焓值,而提供一种复合EPP/相变材料及其制备方法。
一种复合EPP/相变材料,它是由下述方法制备的:
1)将聚丙烯100-120份、改性剂4-6份、矿物添加剂6-10份、分散剂2-5份、抗氧剂1-2份混合,紫外光下照射15~25分钟;微波处理8~12分钟,造粒;
2)再将步骤1)制备的颗粒100份与发泡液10-15份加压浸渍2.5~3.5小时,泄压,制备发泡的改性EPP载体;
3)将相变材料融化,再将改性EPP载体浸渍在融化的相变材料中,真空下保持1.5~2.5小时,滤掉多余相变材料,得到复合EPP/相变材料;
所述改性剂为N,N'-亚甲基双丙烯酰胺;
所述矿物添加剂为滑石、云母、伊利石中的一种或者几种;
所述分散剂为液态石蜡、硬脂酸锌、乙烯基双硬脂酰胺中的一种或者几种;
所述抗氧剂为抗氧剂1076;
所述发泡剂为丁烷;
所述相变材料为聚乙二醇-4000;
所述的聚丙烯100份、改性剂5份、矿物添加剂10份、分散剂2份、抗氧剂1份、丁烷11份;
所述的聚丙烯120份、改性剂6份、矿物添加剂8份、分散剂3份、抗氧剂2份、丁烷10份;
所述的聚丙烯110份、改性剂4份、矿物添加剂9份、分散剂4份、抗氧剂2份、丁烷15份;
所述的聚丙烯100份、改性剂4份、矿物添加剂6份、分散剂5份、抗氧剂1份、丁烷14份;
所述的聚丙烯110份、改性剂5份、矿物添加剂10份、分散剂2份、抗氧剂1份、丁烷12份;
所述的聚丙烯100份、改性剂4份、矿物添加剂9份、分散剂5份、抗氧剂1份、丁烷13份;
所述的聚丙烯110份、改性剂6份、矿物添加剂7份、分散剂3份、抗氧剂2份、丁烷15份;
所述的聚丙烯120份、改性剂5份、矿物添加剂8份、分散剂4份、抗氧剂1份、丁烷15份;
步骤1)所述的紫外光下照射20分钟;微波处理时间10分钟、功率800W;
步骤3)所述的真空下保持2h。
本发明提供了一种复合EPP/相变材料,它是由下述方法制备的:1)将聚丙烯100-120份、改性剂4-6份、矿物添加剂6-10份、分散剂2-5份、抗氧剂1-2份混合,紫外光下照射15~25分钟;微波处理8~12分钟,造粒;2)再将步骤1)制备的颗粒100份与发泡液10-15份加压浸渍2.5~3.5小时,泄压,制备发泡的改性EPP载体;3)将相变材料融化,再将改性EPP载体浸渍在融化的相变材料中,真空下保持1.5~2.5小时,滤掉多余相变材料,得到复合EPP/相变材料;有益效果:本发明通过在聚丙烯基体中共混改性剂、矿物添加剂实现对聚丙烯的改性,以提升聚丙烯基体对相变材料的亲和性,提升改性聚丙烯的热稳定性。同时借助聚丙烯发泡技术,制备EPP载体,并负载有机相变材料制备高负载量、界面稳定吸附的复合相变材料,以解决相变材料的泄漏问题。
附图说明
图1改性EPP载体扫描电镜照片。
具体实施方式
实施例1 复合EPP/相变材料的制备
将聚丙烯100份、N,N'-亚甲基双丙烯酰胺5份、滑石10份、液态石蜡2份、抗氧剂1076 1份在混炼机中进行混合,经紫外光照射20分钟,800W微波处理10分钟后,混合物在螺杆挤出机中造粒;
再将该颗粒100份与丁烷11份加入反应釜中,浸渍3小时后泄压,制备发泡的改性EPP载体;
再将改性EPP载体浸渍在聚乙二醇-4000中,保持真空状态2小时,滤掉多余相变材料后便得到这种复合EPP/相变材料。
实施例2 复合EPP/相变材料的制备
将聚丙烯120份、N,N'-亚甲基双丙烯酰胺6份云母8份、硬脂酸锌3份、抗氧剂10762份在混炼机中进行混合,经紫外光照射20分钟,800W微波处理10分钟后,混合物在螺杆挤出机中造粒;
再将该颗粒100份与丁烷10份加入反应釜中,浸渍3小时后泄压,制备发泡的改性EPP载体;
再将改性EPP载体浸渍在融化的聚乙二醇-4000中,保持真空状态2小时,滤掉多余相变材料后便得到这种复合EPP/相变材料。
实施例3 复合EPP/相变材料的制备
将聚丙烯110份、N,N'-亚甲基双丙烯酰胺4份、伊利石9份、乙烯基双硬脂酰胺4份、抗氧剂1076 2份在混炼机中进行混合,经紫外光照射20分钟,800W微波处理10分钟后,混合物在螺杆挤出机中造粒;
再将该颗粒100份与丁烷15份加入反应釜中,浸渍3小时后泄压,制备发泡的改性EPP载体;
再将改性EPP载体浸渍在融化的聚乙二醇-4000中,保持真空状态2小时,滤掉多余相变材料后便得到这种复合EPP/相变材料。
实施例4 复合EPP/相变材料的制备
将聚丙烯100份、N,N'-亚甲基双丙烯酰胺4份、云母6份、乙烯基双硬脂酰胺5份、抗氧剂1076 1份在混炼机中进行混合,经紫外光照射20分钟,800W微波处理10分钟后,混合物在螺杆挤出机中造粒;
再将该颗粒100份与丁烷14份加入反应釜中,浸渍3小时后泄压,制备发泡的改性EPP载体;
再将改性EPP载体浸渍在融化的聚乙二醇-4000中,保持真空状态2小时,滤掉多余相变材料后便得到这种复合EPP/相变材料。
实施例5 复合EPP/相变材料的制备
将聚丙烯110份、N,N'-亚甲基双丙烯酰胺5份、滑石10份、硬脂酸锌2份、抗氧剂1076 1份在混炼机中进行混合,经紫外光照射20分钟,800W微波处理10分钟后,混合物在螺杆挤出机中造粒;
再将该颗粒100份与丁烷12份加入反应釜中,浸渍3小时后泄压,制备发泡的改性EPP载体;
再将改性EPP载体浸渍在融化的聚乙二醇-4000中,保持真空状态2小时,滤掉多余相变材料后便得到这种复合EPP/相变材料。
实施例6 复合EPP/相变材料的制备
将聚丙烯100份、N,N'-亚甲基双丙烯酰胺4份、伊利石9份、液态石蜡5份、抗氧剂1076 1份在混炼机中进行混合,经紫外光照射20分钟,800W微波处理10分钟后,混合物在螺杆挤出机中造粒;
再将该颗粒100份与丁烷13份加入反应釜中,浸渍3小时后泄压,制备发泡的改性EPP载体;
再将改性EPP载体浸渍在融化的聚乙二醇-4000中,保持真空状态2小时,滤掉多余相变材料后便得到这种复合EPP/相变材料。
实施例7 复合EPP/相变材料的制备
将聚丙烯110份、N,N'-亚甲基双丙烯酰胺6份、滑石7份、硬脂酸锌3份、抗氧剂10762份在混炼机中进行混合,经紫外光照射20分钟,800W微波处理10分钟后,混合物在螺杆挤出机中造粒;
再将该颗粒100份与丁烷15份加入反应釜中,浸渍3小时后泄压,制备发泡的改性EPP载体;
再将改性EPP载体浸渍在融化的聚乙二醇-4000中,保持真空状态2小时,滤掉多余相变材料后便得到这种复合EPP/相变材料。
实施例8 复合EPP/相变材料的制备
将聚丙烯120份、N,N'-亚甲基双丙烯酰胺5份、滑石8份、液态石蜡4份、抗氧剂10761份在混炼机中进行混合,经紫外光照射20分钟,800W微波处理10分钟后,混合物在螺杆挤出机中造粒;
再将该颗粒100份与丁烷15份加入反应釜中,浸渍3小时后泄压,制备发泡的改性EPP载体;
再将改性EPP载体浸渍在融化的聚乙二醇-4000中,保持真空状态2小时,滤掉多余相变材料后便得到这种复合EPP/相变材料。
实施例9 复合EPP/相变材料性能测试
对实施例1~8制备的复合EPP/相变材料进行性能测试,结果如下表。从结果中可以看出,采用实施方案获得的复合EPP/相变材料在测试条件下均无泄漏情况,说明改性EPP与相变材料聚乙二醇-4000具有良好的亲和性,改性EPP载体孔隙率较高(超过88%),熔融焓值较高,是一种性能优异的复合相变材料。
Claims (10)
1.一种复合EPP/相变材料,它是由下述方法制备的:
1)将聚丙烯100-120份、改性剂4-6份、矿物添加剂6-10份、分散剂2-5份、抗氧剂1-2份混合,紫外光下照射,微波处理后造粒;
2)再将步骤1)制备的颗粒100份与发泡液10-15份加压浸渍2.5~3.5小时,泄压,制备发泡的改性EPP载体;
3)将相变材料融化,再将改性EPP载体浸渍在融化的相变材料中,真空处理后滤掉多余相变材料,得到复合EPP/相变材料。
2.根据权利要求1所述的一种复合EPP/相变材料,其特征在于:所述改性剂为N,N'-亚甲基双丙烯酰胺;所述矿物添加剂为滑石、云母、伊利石中的一种或者几种;所述分散剂为液态石蜡、硬脂酸锌、乙烯基双硬脂酰胺中的一种或者几种;所述抗氧剂为抗氧剂1076;所述发泡剂为丁烷;所述相变材料为聚乙二醇-4000。
3.根据权利要求2所述的一种复合EPP/相变材料,其特征在于:所述的聚丙烯100份、改性剂5份、矿物添加剂10份、分散剂2份、抗氧剂1份、丁烷11份。
4.根据权利要求2所述的一种复合EPP/相变材料,其特征在于:所述的聚丙烯120份、改性剂6份、矿物添加剂8份、分散剂3份、抗氧剂2份、丁烷10份。
5.根据权利要求2所述的一种复合EPP/相变材料,其特征在于:所述的聚丙烯110份、改性剂4份、矿物添加剂9份、分散剂4份、抗氧剂2份、丁烷15份。
6.根据权利要求2所述的一种复合EPP/相变材料,其特征在于:所述的聚丙烯100份、改性剂4份、矿物添加剂6份、分散剂5份、抗氧剂1份、丁烷14份。
7.根据权利要求2所述的一种复合EPP/相变材料,其特征在于:所述的聚丙烯110份、改性剂5份、矿物添加剂10份、分散剂2份、抗氧剂1份、丁烷12份。
8.根据权利要求2所述的一种复合EPP/相变材料,其特征在于:所述的聚丙烯100份、改性剂4份、矿物添加剂9份、分散剂5份、抗氧剂1份、丁烷13份。
9.根据权利要求2所述的一种复合EPP/相变材料,其特征在于:所述的聚丙烯110份、改性剂6份、矿物添加剂7份、分散剂3份、抗氧剂2份、丁烷15份。
10.根据权利要求2所述的一种复合EPP/相变材料,其特征在于:所述的聚丙烯120份、改性剂5份、矿物添加剂8份、分散剂4份、抗氧剂1份、丁烷15份。
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