Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Mullite fiber preparation method, high-temperature-resistant heat insulation part and preparation method of high-temperature-resistant heat insulation part
The invention provides a method for preparing mullite fibers, a high-temperature-resistant heat insulation part and a preparation method of the high-temperature-resistant heat insulation part. The method for preparing the mullite fiber comprises the steps that water, an aluminum source, a catalyst and a silicon source are mixed and stirred till the aluminum source and the silicon source are hydrolyzed, first dispersion liquid is obtained, the aluminum source comprises aluminum isopropoxide, the catalyst comprises at least one of hydrochloric acid, formic acid and acetic acid, the silicon source comprises at least one of tetraethyl orthosilicate, APMDES, KH550, KH560 and MTMS, the mass part of water is 15, the mass part of the aluminum source is 3-12, and the mass part of the silicon source is 3-12; the mass part of the catalyst is 1.6-5, and the molar ratio of the silicon source to the aluminum source is 0.04-0.3; adding a spinning auxiliary agent aqueous solution into the first dispersion liquid to obtain a spinning solution; putting the spinning solution into a needle tube, and carrying out electrostatic spinning to obtain a mullite fiber precursor; and carrying out first calcination on the mullite fiber precursor to obtain the mullite fiber. The mullite fiber prepared by the method has excellent high-temperature resistance and light weight, and can be used for preparing high-temperature-resistant heat insulation pieces.
本发明提出了制备莫来石纤维的方法、耐高温隔热件及其制备方法。制备莫来石纤维的方法包括：将水、铝源、催化剂和硅源混合，搅拌至铝源和硅源水解，得到第一分散液，铝源包括异丙醇铝，催化剂包括盐酸、甲酸和乙酸中的至少一种，硅源包括正硅酸四乙酯、APMDES、KH550、KH560和MTMS中的至少一种，水的质量份为15，铝源的质量份为3～12，催化剂的质量份为1.6～5，硅源和铝源的摩尔比为0.04～0.3；向第一分散液中加入纺丝助剂水溶液，得到纺丝液；将纺丝液置于针管中，进行静电纺丝，得到莫来石纤维前驱体；对莫来石纤维前驱体进行第一煅烧，得到莫来石纤维。利用上述方法制备的莫来石纤维具有优异的耐高温性能，质量轻，可以用于制备耐高温隔热件。
Mullite fiber preparation method, high-temperature-resistant heat insulation part and preparation method of high-temperature-resistant heat insulation part
The invention provides a method for preparing mullite fibers, a high-temperature-resistant heat insulation part and a preparation method of the high-temperature-resistant heat insulation part. The method for preparing the mullite fiber comprises the steps that water, an aluminum source, a catalyst and a silicon source are mixed and stirred till the aluminum source and the silicon source are hydrolyzed, first dispersion liquid is obtained, the aluminum source comprises aluminum isopropoxide, the catalyst comprises at least one of hydrochloric acid, formic acid and acetic acid, the silicon source comprises at least one of tetraethyl orthosilicate, APMDES, KH550, KH560 and MTMS, the mass part of water is 15, the mass part of the aluminum source is 3-12, and the mass part of the silicon source is 3-12; the mass part of the catalyst is 1.6-5, and the molar ratio of the silicon source to the aluminum source is 0.04-0.3; adding a spinning auxiliary agent aqueous solution into the first dispersion liquid to obtain a spinning solution; putting the spinning solution into a needle tube, and carrying out electrostatic spinning to obtain a mullite fiber precursor; and carrying out first calcination on the mullite fiber precursor to obtain the mullite fiber. The mullite fiber prepared by the method has excellent high-temperature resistance and light weight, and can be used for preparing high-temperature-resistant heat insulation pieces.
本发明提出了制备莫来石纤维的方法、耐高温隔热件及其制备方法。制备莫来石纤维的方法包括：将水、铝源、催化剂和硅源混合，搅拌至铝源和硅源水解，得到第一分散液，铝源包括异丙醇铝，催化剂包括盐酸、甲酸和乙酸中的至少一种，硅源包括正硅酸四乙酯、APMDES、KH550、KH560和MTMS中的至少一种，水的质量份为15，铝源的质量份为3～12，催化剂的质量份为1.6～5，硅源和铝源的摩尔比为0.04～0.3；向第一分散液中加入纺丝助剂水溶液，得到纺丝液；将纺丝液置于针管中，进行静电纺丝，得到莫来石纤维前驱体；对莫来石纤维前驱体进行第一煅烧，得到莫来石纤维。利用上述方法制备的莫来石纤维具有优异的耐高温性能，质量轻，可以用于制备耐高温隔热件。
Mullite fiber preparation method, high-temperature-resistant heat insulation part and preparation method of high-temperature-resistant heat insulation part
制备莫来石纤维的方法、耐高温隔热件及其制备方法
ZHENG KELIANG (Autor:in) / XIE YI (Autor:in) / WU CHANGZHENG (Autor:in)
24.05.2024
Patent
Elektronische Ressource
Chinesisch
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