Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Hollow carbon fiber reinforced carbon aerogel composite material as well as preparation method and application thereof
The invention belongs to the technical field of carbon-carbon composite materials, and provides a hollow carbon fiber reinforced carbon aerogel composite material as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing a phenolic monomer, an aldehyde monomer, a metal ion catalyst and an alcohol solvent to obtain a mixed solution; soaking the viscose-based fiber felt in the mixed solution, and then carrying out sol-gel reaction to obtain a composite material precursor; and sequentially carrying out normal-pressure drying and carbonization reaction on the composite material precursor to obtain the hollow carbon fiber reinforced carbon aerogel composite material. According to the invention, a carbon fiber reinforcement body with a hollow structure is successfully constructed through the shrinkage difference between the fiber and the resin in the carbonization process, and the metal ion catalyst has a pore-forming effect, so that the prepared hollow carbon fiber reinforced carbon aerogel composite material has high mechanical property and large specific surface area, and is suitable for large-scale production. The problems that phenolic resin-based carbon aerogel is poor in mechanical property, and the mechanical property is incompatible with a pore structure are solved.
本发明属于碳‑碳复合材料技术领域，提供了一种中空碳纤维增强碳气凝胶复合材料及其制备方法和应用。本发明的制备方法包含如下步骤：将酚类单体、醛类单体、金属离子催化剂和醇类溶剂混合，得到混合溶液；将粘胶基纤维毡浸泡在混合溶液中，随后进行溶胶‑凝胶反应，得到复合材料前体；将复合材料前体顺次进行常压干燥、碳化反应即可获得中空碳纤维增强碳气凝胶复合材料。本发明在碳化过程中通过纤维与树脂之间的收缩差异，成功构建了具有中空结构的碳纤维增强体，并且金属离子催化剂具备造孔作用，使制得的中空碳纤维增强碳气凝胶复合材料兼具高力学性能与大比表面积，解决了酚醛树脂基碳气凝胶力学性能差、力学性能与孔结构不兼容的问题。
Hollow carbon fiber reinforced carbon aerogel composite material as well as preparation method and application thereof
The invention belongs to the technical field of carbon-carbon composite materials, and provides a hollow carbon fiber reinforced carbon aerogel composite material as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing a phenolic monomer, an aldehyde monomer, a metal ion catalyst and an alcohol solvent to obtain a mixed solution; soaking the viscose-based fiber felt in the mixed solution, and then carrying out sol-gel reaction to obtain a composite material precursor; and sequentially carrying out normal-pressure drying and carbonization reaction on the composite material precursor to obtain the hollow carbon fiber reinforced carbon aerogel composite material. According to the invention, a carbon fiber reinforcement body with a hollow structure is successfully constructed through the shrinkage difference between the fiber and the resin in the carbonization process, and the metal ion catalyst has a pore-forming effect, so that the prepared hollow carbon fiber reinforced carbon aerogel composite material has high mechanical property and large specific surface area, and is suitable for large-scale production. The problems that phenolic resin-based carbon aerogel is poor in mechanical property, and the mechanical property is incompatible with a pore structure are solved.
本发明属于碳‑碳复合材料技术领域，提供了一种中空碳纤维增强碳气凝胶复合材料及其制备方法和应用。本发明的制备方法包含如下步骤：将酚类单体、醛类单体、金属离子催化剂和醇类溶剂混合，得到混合溶液；将粘胶基纤维毡浸泡在混合溶液中，随后进行溶胶‑凝胶反应，得到复合材料前体；将复合材料前体顺次进行常压干燥、碳化反应即可获得中空碳纤维增强碳气凝胶复合材料。本发明在碳化过程中通过纤维与树脂之间的收缩差异，成功构建了具有中空结构的碳纤维增强体，并且金属离子催化剂具备造孔作用，使制得的中空碳纤维增强碳气凝胶复合材料兼具高力学性能与大比表面积，解决了酚醛树脂基碳气凝胶力学性能差、力学性能与孔结构不兼容的问题。
Hollow carbon fiber reinforced carbon aerogel composite material as well as preparation method and application thereof
一种中空碳纤维增强碳气凝胶复合材料及其制备方法和应用
JU ANQI (Autor:in) / LI KUNMING (Autor:in) / ZHU MEIFANG (Autor:in)
27.08.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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