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Preparation method of graphene composite silica aerogel thermal insulation material
The invention relates to the technical field of graphene and thermal insulation materials, in particular to a preparation method of a graphene composite silica aerogel thermal insulation material, which comprises the following four steps: fully hydrolyzing tetraethoxysilane and ethanol to obtain a silicon precursor solution; mixing the graphene oxide with the silicon precursor solution; impregnating a fiber felt in the obtained graphene-SiO2 sol, and carrying out heating molding; and carrying out aging treatment and modification treatment on the fiber felt, and then drying. The graphene oxide (GO) does not change the production process of the existing silica aerogel felt, and only needs to be added before the silica gel is formed, and the process operation is simple, so that when the composite aerogel is combined with reinforcements such as glass fibers, a large amount of powder is not easy to fall off due to factors such as external force, and the problem of powder falling of the aerogel felt is greatly improved.
本发明涉及石墨烯及隔热保温材料技术领域，一种石墨烯复合硅气凝胶隔热材料的制备方法，包括以下四步骤，取正硅酸乙酯、乙醇充分水解得到硅前驱液；氧化石墨烯与硅前驱液混合；将纤维毡浸渍在所得石墨烯‑SiO2溶胶，并加热成型；将纤维毡进行老化处理和改性处理，再干燥；氧化石墨烯（GO）的加入不会改变现有硅气凝胶毡的生产流程，只需在硅凝胶成型前添加即可，工艺操作简单，从而，在复合气凝胶与玻璃纤维等增强体结合时，不易因外力等因素造成大量的粉体脱落，极大地改善气凝胶毡掉粉问题。
Preparation method of graphene composite silica aerogel thermal insulation material
The invention relates to the technical field of graphene and thermal insulation materials, in particular to a preparation method of a graphene composite silica aerogel thermal insulation material, which comprises the following four steps: fully hydrolyzing tetraethoxysilane and ethanol to obtain a silicon precursor solution; mixing the graphene oxide with the silicon precursor solution; impregnating a fiber felt in the obtained graphene-SiO2 sol, and carrying out heating molding; and carrying out aging treatment and modification treatment on the fiber felt, and then drying. The graphene oxide (GO) does not change the production process of the existing silica aerogel felt, and only needs to be added before the silica gel is formed, and the process operation is simple, so that when the composite aerogel is combined with reinforcements such as glass fibers, a large amount of powder is not easy to fall off due to factors such as external force, and the problem of powder falling of the aerogel felt is greatly improved.
本发明涉及石墨烯及隔热保温材料技术领域，一种石墨烯复合硅气凝胶隔热材料的制备方法，包括以下四步骤，取正硅酸乙酯、乙醇充分水解得到硅前驱液；氧化石墨烯与硅前驱液混合；将纤维毡浸渍在所得石墨烯‑SiO2溶胶，并加热成型；将纤维毡进行老化处理和改性处理，再干燥；氧化石墨烯（GO）的加入不会改变现有硅气凝胶毡的生产流程，只需在硅凝胶成型前添加即可，工艺操作简单，从而，在复合气凝胶与玻璃纤维等增强体结合时，不易因外力等因素造成大量的粉体脱落，极大地改善气凝胶毡掉粉问题。
Preparation method of graphene composite silica aerogel thermal insulation material
一种石墨烯复合硅气凝胶隔热材料的制备方法
CAI JINMING (author) / HUANG WENTIAN (author) / HE JIANCHANG (author)
2021-06-01
Patent
Electronic Resource
Chinese
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