Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Polyester nanofiber/silicon dioxide composite aerogel film and preparation method thereof
The invention relates to a polyester nanofiber/silicon dioxide composite aerogel film and a preparation method thereof.The preparation method comprises the steps that firstly, a polyester nanofiber film is soaked in a silanol solution, and in-situ condensation polymerization is conducted on the interior and the surface of the polyester nanofiber film to form silicon dioxide gel; then putting into a mixed solution of trimethylchlorosilane/ethanol/n-hexane to carry out hydrophobic modification; and finally, carrying out solvent replacement and normal-pressure drying to obtain the polyester nanofiber/silicon dioxide composite aerogel film. The composite aerogel film is of an interpenetrating organic-inorganic double-network structure formed by combining a three-dimensional polyester nanofiber network and inorganic silicon dioxide aerogel. The in-situ grown silicon dioxide aerogel is tightly combined on the surface of the polyester nanofiber as an inorganic protective layer, so that the problem of structural instability of the polyester nanofiber in a high-temperature environment can be effectively inhibited, and the application temperature of the polyester nanofiber membrane is widened.
本发明涉及一种聚酯纳米纤维/二氧化硅复合气凝胶膜及其制备方法，先将聚酯纳米纤维膜浸渍于硅醇溶液中，在聚酯纳米纤维膜内部和表面进行原位缩聚反应形成二氧化硅凝胶；再置于三甲基氯硅烷/乙醇/正己烷的混合溶液中进行疏水化改性；最后经过溶剂置换和常压干燥得到聚酯纳米纤维/二氧化硅复合气凝胶膜；所述复合气凝胶膜是由三维聚酯纳米纤维网络与无机二氧化硅气凝胶结合形成的互穿的有机‑无机双网络结构。本发明原位生长的二氧化硅气凝胶紧密地结合在聚酯纳米纤维表面，作为无机保护层，可有效抑制高温环境中聚酯纳米纤维结构失稳的问题，拓宽聚酯纳米纤维膜的应用温度。
Polyester nanofiber/silicon dioxide composite aerogel film and preparation method thereof
The invention relates to a polyester nanofiber/silicon dioxide composite aerogel film and a preparation method thereof.The preparation method comprises the steps that firstly, a polyester nanofiber film is soaked in a silanol solution, and in-situ condensation polymerization is conducted on the interior and the surface of the polyester nanofiber film to form silicon dioxide gel; then putting into a mixed solution of trimethylchlorosilane/ethanol/n-hexane to carry out hydrophobic modification; and finally, carrying out solvent replacement and normal-pressure drying to obtain the polyester nanofiber/silicon dioxide composite aerogel film. The composite aerogel film is of an interpenetrating organic-inorganic double-network structure formed by combining a three-dimensional polyester nanofiber network and inorganic silicon dioxide aerogel. The in-situ grown silicon dioxide aerogel is tightly combined on the surface of the polyester nanofiber as an inorganic protective layer, so that the problem of structural instability of the polyester nanofiber in a high-temperature environment can be effectively inhibited, and the application temperature of the polyester nanofiber membrane is widened.
本发明涉及一种聚酯纳米纤维/二氧化硅复合气凝胶膜及其制备方法，先将聚酯纳米纤维膜浸渍于硅醇溶液中，在聚酯纳米纤维膜内部和表面进行原位缩聚反应形成二氧化硅凝胶；再置于三甲基氯硅烷/乙醇/正己烷的混合溶液中进行疏水化改性；最后经过溶剂置换和常压干燥得到聚酯纳米纤维/二氧化硅复合气凝胶膜；所述复合气凝胶膜是由三维聚酯纳米纤维网络与无机二氧化硅气凝胶结合形成的互穿的有机‑无机双网络结构。本发明原位生长的二氧化硅气凝胶紧密地结合在聚酯纳米纤维表面，作为无机保护层，可有效抑制高温环境中聚酯纳米纤维结构失稳的问题，拓宽聚酯纳米纤维膜的应用温度。
Polyester nanofiber/silicon dioxide composite aerogel film and preparation method thereof
一种聚酯纳米纤维/二氧化硅复合气凝胶膜及其制备方法
LIU DUNLEI (Autor:in) / FAN WEI (Autor:in) / XUE TIANTIAN (Autor:in) / CONG MAOPENG (Autor:in) / LIU BIAO (Autor:in)
06.05.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
/
D06M
Behandeln von Fasern, Fäden, Garnen, Textilgut, Federn oder aus solchen Materialien hergestelltem Fasergut, soweit nicht anderweitig in Klasse D06 vorgesehen
,
TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
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