CN106554577A - 聚苯乙烯基相变微胶囊储热复合材料的制备方法 - Google Patents
聚苯乙烯基相变微胶囊储热复合材料的制备方法 Download PDFInfo
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Abstract
本发明涉及一种聚苯乙烯基相变微胶囊储热复合材料的制备方法。聚苯乙烯基相变微胶囊储热复合材料的制备方法,包括如下步骤:(1)相变微胶囊的制备;(2)相变微胶囊复合材料的制备。本发明采用本体聚合法制备了聚苯乙烯基相变微胶囊储热复合材料储热复合材料,具有明显储热功能,传热速率减缓,导热系数显著降低,其导热系数总体低于国标关于高效保温材料导热系数的规定,属于良好的隔热保温材料。
Description
技术领域
本发明涉及一种聚苯乙烯基相变微胶囊储热复合材料的制备方法。
背景技术
微胶囊相变材料是采用微胶囊技术在相变材料表面包覆一层性能稳定的膜,形成具有核壳结构的新型相变材料。通过相变微胶囊技术提高传统相变材料的稳定性,强化传统相变材料的传热性能,改善传统相变材料的加工性能。聚苯乙烯保温材料由于其具有质轻、绝缘、绝热、防震、隔音、防腐蚀、抗水、化学性质稳定等优良性能,被广泛地应用在建筑,轻工,航运和国防等领域。目前,在我国建筑行业使用的外墙保温材料中,聚苯乙烯保温板的占有率已经达到85%。但随着国家对建筑用保温材料性能要求的提高,传统聚苯乙烯保温材料已经难以满足实际需求。因此,提高传统聚苯乙烯保温材料的储热性能以满足实际需求已迫在眉睫。
发明内容
本发明旨在提出一种聚苯乙烯基相变微胶囊储热复合材料的制备方法。
本发明的技术方案在于:
聚苯乙烯基相变微胶囊储热复合材料的制备方法,包括如下步骤:
(1)相变微胶囊的制备
将蒸馏水、羟丙基纤维素和碳酸钙、硬脂酸丁酯加入装有冷凝回流、加热温控、氮气保护和电动搅拌的四口反应瓶中,升温搅拌至硬脂酸丁酯熔融并均匀分散;通氮气保护,滴加苯乙烯、二乙烯苯和偶氮二异丁腈溶液;边滴加边升温,升温至80℃聚合120 min,继续升温至95℃熟化90 min,得到白色的微胶囊球形颗粒,降温至30℃以下停止搅拌,过滤出料;乙醇洗涤一次、热蒸馏水洗涤3次,自然风干得相变微胶囊;
(2)相变微胶囊复合材料的制备
在装有冷凝回流、加热温控、氮气保护和电动搅拌的四口烧瓶中,加入苯乙烯和偶氮二异丁腈,搅拌均匀,通氮气保护,升温至80℃,反应60 min;加入相变微胶囊,搅拌分散30min,停止加热,冷却至50℃,停止搅拌,得预聚混合物;将预聚物缓缓浇入300 mm×300 mm×10 mm的成型模具中,除去气泡,将模具放人烘箱,于40℃继续聚合20 h,体系凝定;再升温至80℃保温48 h,打开烘箱,自然冷却至室温,取出制品,洗净,吹干,得聚苯乙烯基相变微胶囊储热复合材料。
本发明的技术效果在于:
本发明采用本体聚合法制备了聚苯乙烯基相变微胶囊储热复合材料储热复合材料,具有明显储热功能,传热速率减缓,导热系数显著降低,其导热系数总体低于国标关于高效保温材料导热系数的规定,属于良好的隔热保温材料;微胶囊对聚苯乙烯基体具有增韧作用,聚苯乙烯基体的玻璃化转变温度降低,随着相变微胶囊含量的增大及温度的升高,聚苯乙烯基相变微胶囊储热复合材料的强度降低,断裂伸长率增大。
具体实施方式
聚苯乙烯基相变微胶囊储热复合材料的制备方法,包括如下步骤:
(1)相变微胶囊的制备
将蒸馏水、羟丙基纤维素和碳酸钙、硬脂酸丁酯加入装有冷凝回流、加热温控、氮气保护和电动搅拌的四口反应瓶中,升温搅拌至硬脂酸丁酯熔融并均匀分散;通氮气保护,滴加苯乙烯、二乙烯苯和偶氮二异丁腈溶液;边滴加边升温,升温至80℃聚合120 min,继续升温至95℃熟化90 min,得到白色的微胶囊球形颗粒,降温至30℃以下停止搅拌,过滤出料;乙醇洗涤一次、热蒸馏水洗涤3次,自然风干得相变微胶囊;
(2)相变微胶囊复合材料的制备
在装有冷凝回流、加热温控、氮气保护和电动搅拌的四口烧瓶中,加入苯乙烯和偶氮二异丁腈,搅拌均匀,通氮气保护,升温至80℃,反应60 min;加入相变微胶囊,搅拌分散30min,停止加热,冷却至50℃,停止搅拌,得预聚混合物;将预聚物缓缓浇入300 mm×300 mm×10 mm的成型模具中,除去气泡,将模具放人烘箱,于40℃继续聚合20 h,体系凝定;再升温至80℃保温48 h,打开烘箱,自然冷却至室温,取出制品,洗净,吹干,得聚苯乙烯基相变微胶囊储热复合材料。
Claims (1)
1.聚苯乙烯基相变微胶囊储热复合材料的制备方法,其特征在于:包括如下步骤:
(1)相变微胶囊的制备
将蒸馏水、羟丙基纤维素和碳酸钙、硬脂酸丁酯加入装有冷凝回流、加热温控、氮气保护和电动搅拌的四口反应瓶中,升温搅拌至硬脂酸丁酯熔融并均匀分散;通氮气保护,滴加苯乙烯、二乙烯苯和偶氮二异丁腈溶液;边滴加边升温,升温至80℃聚合120 min,继续升温至95℃熟化90 min,得到白色的微胶囊球形颗粒,降温至30℃以下停止搅拌,过滤出料;乙醇洗涤一次、热蒸馏水洗涤3次,自然风干得相变微胶囊;
(2)相变微胶囊复合材料的制备
在装有冷凝回流、加热温控、氮气保护和电动搅拌的四口烧瓶中,加入苯乙烯和偶氮二异丁腈,搅拌均匀,通氮气保护,升温至80℃,反应60 min;加入相变微胶囊,搅拌分散30min,停止加热,冷却至50℃,停止搅拌,得预聚混合物;将预聚物缓缓浇入300 mm×300 mm×10 mm的成型模具中,除去气泡,将模具放人烘箱,于40℃继续聚合20 h,体系凝定;再升温至80℃保温48 h,打开烘箱,自然冷却至室温,取出制品,洗净,吹干,得聚苯乙烯基相变微胶囊储热复合材料。
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CN109971080A (zh) * | 2017-12-27 | 2019-07-05 | 洛阳尖端技术研究院 | 一种蓄热聚苯乙烯泡沫及其制备方法和应用 |
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CN109971080A (zh) * | 2017-12-27 | 2019-07-05 | 洛阳尖端技术研究院 | 一种蓄热聚苯乙烯泡沫及其制备方法和应用 |
CN109971080B (zh) * | 2017-12-27 | 2022-09-13 | 洛阳尖端技术研究院 | 一种蓄热聚苯乙烯泡沫及其制备方法和应用 |
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