一种纤维素复合气凝胶制备方法及应用

一种纤维素复合气凝胶制备方法及应用

1.本发明涉及气凝胶技术领域，特别是一种纤维素复合气凝胶制

备方法及其应用。

This invention relates to the field of aerogel technology, in particular to a method for preparing cellulose composite aerogels and their applications.

2.该方法包括将纤维素溶液与其他添加剂混合，并通过凝胶化和

超临界干燥工艺得到纤维素复合气凝胶。

The method comprises mixing cellulose solution with other additives, and obtaining cellulose composite aerogels through gelation and supercritical drying processes.

3.所述纤维素溶液可以是纤维素衍生物的水溶液，如羟乙基纤维

素或甲基纤维素等。

The cellulose solution can be an aqueous solution of cellulose derivatives, such as hydroxyethyl cellulose or methyl cellulose.

4.在混合纤维素溶液时，可以添加其他纳米材料或化学添加剂，以改善气凝胶的性能。

When mixing the cellulose solution, other nanomaterials or chemical additives can be added to improve the performance of the aerogel.

5.在凝胶化过程中，可以采用不同的交联剂或凝胶剂，如硫酸铝或磷酸铝等。

In the gelation process, different crosslinking agents or gelling agents, such as aluminum sulfate or aluminum phosphate, can be used.

6.超临界干燥是通过将凝胶置于高压和高温下，使溶剂在非常短的时间内从凝胶中蒸发，得到气凝胶。

Supercritical drying is achieved by placing the gel under high pressure and high temperature, allowing the solvent to evaporate from the gel in a very short time, obtaining the aerogel.

7.所得的纤维素复合气凝胶具有低密度、高比表面积和较好的机械性能，可用于吸油、隔热、隔音等领域。

The obtained cellulose composite aerogel has low density, high specific surface area, and good mechanical properties, which can be used in fields such as oil absorption, thermal insulation, and sound insulation.

8.在吸油领域，纤维素复合气凝胶可以作为高效吸附剂用于油水分离、油田废水处理等。

In the field of oil absorption, cellulose composite aerogels can be used as efficient adsorbents for oil-water separation, oilfield wastewater treatment, etc.

9.在隔热领域，纤维素复合气凝胶可以制备成隔热板材，用于建筑保温或冷链运输中的温控包装。

In the thermal insulation field, cellulose composite aerogels can be prepared into insulation boards for building insulation or thermal control packaging in cold chain transportation.

10.在隔音领域，纤维素复合气凝胶可以用于制备隔音材料，用于汽车、船舶等噪音控制。

In the sound insulation field, cellulose composite aerogels can be used to prepare sound insulation materials for noise control in automobiles, ships, etc.