CN114525628A - 一种通过熔喷工艺制作气凝胶隔热膜方法 - Google Patents
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Abstract
本发明涉及隔热材料的技术领域，特别是涉及一种通过熔喷工艺制作气凝胶隔热膜方法，采用熔喷工艺制取的气凝胶隔热膜，解决现有技术中强度不足以及分体散落的问题，具有广泛应用的前景；包括以下步骤：S1、将气凝胶粉体均匀包裹在树脂母粒上，形成半成品A；S2、将半成品A进行造粒，形成半成品B；S3、将半成品B熔融后通过熔喷工艺制取气凝胶隔热膜。
Description
技术领域
本发明涉及隔热材料的技术领域，特别是涉及一种通过熔喷工艺制作气凝胶隔热膜方法。
背景技术
随着能源消耗的加剧，不论是工业还是民生，从节能减排的角度出发，需要高效的隔热材料，以减少对能源的消耗，另外电子产品的热管理也需要高效的隔热材料改善用户体验度。
气凝胶隔热膜从消费者对产品表面的温度感受出发、利用气凝胶孔隙阻隔或改变热量传导的方向，降低产品的表面温度，减少或消除热点温度对消费者体感的不适影响，提升消费者产品体验的舒适度。
但是，现有技术中，气凝胶隔热膜存在强度低以及分体散落的问题，导致气凝胶隔热膜在应用过程中存在一定的局限性。
发明内容
为解决上述技术问题，本发明提供一种通过熔喷工艺制作气凝胶隔热膜方法，采用熔喷工艺制取的气凝胶隔热膜，解决现有技术中强度不足以及分体散落的问题，具有广泛应用的前景。
本发明的一种通过熔喷工艺制作气凝胶隔热膜方法，包括以下步骤：
S1、气凝胶粉体和树脂母粒进行混合搅拌，将气凝胶粉体均匀包裹在树脂母粒上，形成半成品A，树脂母粒可以是聚丙烯、全氟丙烯酸酯或者聚乙烯等；
S2、将半成品A加入挤出机进行挤出造粒，形成半成品B；
S3、将半成品B加入螺杆挤出机进行熔融，然后输送到熔喷组件进行喷丝成布，冷却收卷即为本发明的气凝胶隔热膜。
进一步地，步骤S1中所述树脂母粒带有负电。
进一步地，步骤S1中气凝胶粉体与树脂母粒的重量比例为1:5-10。
进一步地，所述步骤S2中至少进行两次造粒，以保证混合的均一性。
进一步地，所述步骤S3中熔喷工艺原料还包括自由基型引发剂、光亮润滑剂、抗氧剂以及透明成核剂。
进一步地，按重量计，半成品B为96％-99％，自由基型引发剂0.1％-2％，光亮润滑剂0.2％，抗氧剂0.01％-0.3％，透明成核剂0.1％-0.5％。
与现有技术相比本发明的有益效果为：第一、本发明将气凝胶粉体以及树脂母粒结合在一起，并采用熔喷工艺制取本发明的隔热膜，厚度控制良好，可制备200-5000微米的隔热膜；第二、本发明制取的隔热膜可进行弯折，并且不会产生粉体散落，对工作人员的身体健康影响较小。
具体实施方式
下面结合实施例，对本发明的具体实施方式作进一步详细描述。以下实施例用于说明本发明，但不用来限制本发明的范围。
实施例1-4中气凝胶粉体规格为：气凝胶粉体密度为30-100kg/m3，粒径为10-100um；
实施例1：
一种通过熔喷工艺制作气凝胶隔热膜方法，包括以下步骤：
S1、气凝胶粉体和带有负电的树脂母粒进行混合搅拌，将气凝胶粉体均匀包裹在树脂母粒上，形成半成品A，树脂母粒是聚丙烯，气凝胶粉体与树脂母粒重量比例为1:6.3；
S2、将半成品A加入挤出机进行挤出造粒，造粒完成后重复进行一次造粒，形成半成品B；
S3、按重量计，半成品B为98.75％，自由基型引发剂选用偶氮二异丁腈，占比为0.53％，光亮润滑剂选用聚乙烯蜡，占比为0.2％，抗氧剂选用抗氧剂1010，占比为0.3％，透明成核剂选用3988，占比为0.42％，将上述原料加入螺杆挤出机进行熔融，然后输送到熔喷组件进行喷丝成布，冷却收卷即为本发明的气凝胶隔热膜。
实施例2：
一种通过熔喷工艺制作气凝胶隔热膜方法，包括以下步骤：
S1、气凝胶粉体和带有负电的树脂母粒进行混合搅拌，将气凝胶粉体均匀包裹在树脂母粒上，形成半成品A，树脂母粒是聚乙烯，气凝胶粉体与树脂母粒重量比例为1:7.8；
S2、将半成品A加入挤出机进行挤出造粒，造粒完成后重复进行一次造粒，形成半成品B；
S3、按重量计，半成品B为98.55％，自由基型引发剂选用偶氮二异丁腈，占比为0.73％，光亮润滑剂选用聚乙烯蜡，占比为0.2％，抗氧剂选用抗氧剂1010，占比为0.2％，透明成核剂选用3988，占比为0.32％，将上述原料加入螺杆挤出机进行熔融，然后输送到熔喷组件进行喷丝成布，冷却收卷即为本发明的气凝胶隔热膜。
实施例3：
一种通过熔喷工艺制作气凝胶隔热膜方法，包括以下步骤：
S1、气凝胶粉体和带有负电的树脂母粒进行混合搅拌，将气凝胶粉体均匀包裹在树脂母粒上，形成半成品A，树脂母粒是全氟丙烯酸酯，气凝胶粉体与树脂母粒重量比例为1:9.5；
S2、将半成品A加入挤出机进行挤出造粒，造粒完成后重复进行一次造粒，形成半成品B；
S3、按重量计，半成品B为99.15％，自由基型引发剂选用偶氮二异丁腈，占比为0.23％，光亮润滑剂选用聚乙烯蜡，占比为0.2％，抗氧剂选用抗氧剂1010，占比为0.3％，透明成核剂选用3988，占比为0.12％，将上述原料加入螺杆挤出机进行熔融，然后输送到熔喷组件进行喷丝成布，冷却收卷即为本发明的气凝胶隔热膜。
实施例4：
一种通过熔喷工艺制作气凝胶隔热膜方法，包括以下步骤：
S1、气凝胶粉体和带有负电的树脂母粒进行混合搅拌，将气凝胶粉体均匀包裹在树脂母粒上，形成半成品A，树脂母粒是全氟丙烯酸酯，气凝胶粉体与树脂母粒重量比例为1:8.2；
S2、将半成品A加入挤出机进行挤出造粒，造粒完成后重复进行一次造粒，形成半成品B；
S3、按重量计，半成品B为99.25％，自由基型引发剂选用偶氮二异丁腈，占比为0.13％，光亮润滑剂选用聚乙烯蜡，占比为0.2％，抗氧剂选用抗氧剂1010，占比为0.2％，透明成核剂选用3988，占比为0.22％，将上述原料加入螺杆挤出机进行熔融，然后输送到熔喷组件进行喷丝成布，冷却收卷即为本发明的气凝胶隔热膜。
实施例1-4中，所涉及到的挤出机、熔喷工艺等均采用现有技术，不多加说明，通过熔喷工艺控制制取的气凝胶隔热膜的厚度等参数，使用者根据实际使用进行适当调整即可；
实施例1-4进行导热系数测试，测试方法如下：颗粒或粉料样品的导热系数测试采用瞬态热线法，参考GB/T10297-2015《非金属固体材料导热系数的测定热线法》，将样品均匀填充到样品盒中，在两个样品盒中间置入线热源，线热源直接接触到样品；
测试结果如下：
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明技术原理的前提下，还可以做出若干改进和变型，这些改进和变型也应视为本发明的保护范围。
Claims (6)
1.一种通过熔喷工艺制作气凝胶隔热膜方法，其特征在于，包括以下步骤：
S1、将气凝胶粉体均匀包裹在树脂母粒上，形成半成品A；
S2、将半成品A进行造粒，形成半成品B；
S3、将半成品B熔融后通过熔喷工艺制取气凝胶隔热膜。
2.如权利要求1所述的一种通过熔喷工艺制作气凝胶隔热膜方法，其特征在于，步骤S1中所述树脂母粒带有负电。
3.如权利要求2所述的一种通过熔喷工艺制作气凝胶隔热膜方法，其特征在于，步骤S1中气凝胶粉体与树脂母粒的重量比例为1:5-10。
4.如权利要求3所述的一种通过熔喷工艺制作气凝胶隔热膜方法，其特征在于，所述步骤S2中至少进行两次造粒。
5.如权利要求4所述的一种通过熔喷工艺制作气凝胶隔热膜方法，其特征在于，所述步骤S3中熔喷工艺原料还包括自由基型引发剂、光亮润滑剂、抗氧剂以及透明成核剂。
6.如权利要求5所述的一种通过熔喷工艺制作气凝胶隔热膜方法，其特征在于，按重量计，半成品B为96％-99％，自由基型引发剂0.1％-2％，光亮润滑剂0.2％，抗氧剂0.01％-0.3％，透明成核剂0.1％-0.5％。
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