Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of aerogel heat insulation felt
The invention provides a preparation method of an aerogel heat insulation felt, the preparation method comprises the following steps: S1, adding reinforced fibers into a silane coupling agent solution, stirring for 0.5-2 hours, taking out, rinsing, carrying out heat treatment at 100-120 DEG C for 1-5 hours, and cooling to room temperature to obtain pretreated reinforced fibers for later use; s2, drying insoluble and infusible polydimethylsilane, then heating the dried insoluble and infusible polydimethylsilane to 400-450 DEG C under the protection of nitrogen, and carrying out a thermal decomposition rearrangement reaction to obtain liquid polycarbosilane for later use; s3, uniformly mixing an opacifying agent with the pretreated reinforced fibers obtained in the step S1, putting the mixture into a mold, pouring the liquid polycarbosilane obtained in the step S2 into the mold, adding acetylacetone and zirconium acetylacetonate into the liquid polycarbosilane, sealing the mold, introducing nitrogen for emptying, meanwhile, pre-adding 50 KPa pressure, heating to the supercritical point of the polycarbosilane, preserving heat for 1-2 hours, and removing carbon at high temperature, taking out, and cooling to room temperature to obtain the aerogel heat insulation felt. The preparation method is easy to operate and relatively low in cost, and the prepared aerogel heat insulation felt has relatively good heat preservation performance.
本发明提供一种气凝胶绝热毡的制备方法，包括以下步骤：S1.将增强纤维加入硅烷偶联剂溶液中，搅拌0.5～2h后取出漂洗，100～120℃下热处理1～5h，冷却至室温后得到预处理增强纤维备用；S2.将不溶不熔的聚二甲基硅烷烘干，然后在氮气保护下加热至400～450℃进行热分解重排反应,得到液态聚碳硅烷备用；S3.将遮光剂与步骤S1得到的预处理增强纤维混匀并放入模具中，将步骤S2得到的液态聚碳硅烷倒入模具中，将乙酰丙酮、乙酰丙酮锆加入液态聚碳硅烷，将模具密封后通入氮气排空，同时预加50KPa压力，升温至聚碳硅烷的超临界点后保温1～2h，高温除碳后取出，冷却至室温后得到气凝胶绝热毡。本发明操作简单，成本较低，且制得的气凝胶绝热毡具有较好的保温性能。
Preparation method of aerogel heat insulation felt
The invention provides a preparation method of an aerogel heat insulation felt, the preparation method comprises the following steps: S1, adding reinforced fibers into a silane coupling agent solution, stirring for 0.5-2 hours, taking out, rinsing, carrying out heat treatment at 100-120 DEG C for 1-5 hours, and cooling to room temperature to obtain pretreated reinforced fibers for later use; s2, drying insoluble and infusible polydimethylsilane, then heating the dried insoluble and infusible polydimethylsilane to 400-450 DEG C under the protection of nitrogen, and carrying out a thermal decomposition rearrangement reaction to obtain liquid polycarbosilane for later use; s3, uniformly mixing an opacifying agent with the pretreated reinforced fibers obtained in the step S1, putting the mixture into a mold, pouring the liquid polycarbosilane obtained in the step S2 into the mold, adding acetylacetone and zirconium acetylacetonate into the liquid polycarbosilane, sealing the mold, introducing nitrogen for emptying, meanwhile, pre-adding 50 KPa pressure, heating to the supercritical point of the polycarbosilane, preserving heat for 1-2 hours, and removing carbon at high temperature, taking out, and cooling to room temperature to obtain the aerogel heat insulation felt. The preparation method is easy to operate and relatively low in cost, and the prepared aerogel heat insulation felt has relatively good heat preservation performance.
本发明提供一种气凝胶绝热毡的制备方法，包括以下步骤：S1.将增强纤维加入硅烷偶联剂溶液中，搅拌0.5～2h后取出漂洗，100～120℃下热处理1～5h，冷却至室温后得到预处理增强纤维备用；S2.将不溶不熔的聚二甲基硅烷烘干，然后在氮气保护下加热至400～450℃进行热分解重排反应,得到液态聚碳硅烷备用；S3.将遮光剂与步骤S1得到的预处理增强纤维混匀并放入模具中，将步骤S2得到的液态聚碳硅烷倒入模具中，将乙酰丙酮、乙酰丙酮锆加入液态聚碳硅烷，将模具密封后通入氮气排空，同时预加50KPa压力，升温至聚碳硅烷的超临界点后保温1～2h，高温除碳后取出，冷却至室温后得到气凝胶绝热毡。本发明操作简单，成本较低，且制得的气凝胶绝热毡具有较好的保温性能。
Preparation method of aerogel heat insulation felt
一种气凝胶绝热毡的制备方法
WANG TIANFU (Autor:in) / SHAN WENBO (Autor:in) / ZHANG FEIYONG (Autor:in) / WANG ZHONGYUAN (Autor:in)
08.02.2022
Patent
Elektronische Ressource
Chinesisch
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