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Fiber cement board with high fixed carbon content and preparation method thereof
The invention discloses a fiber cement board with high fixed carbon content and a preparation method thereof. The preparation method comprises the following steps: mixing fibers, a gelling component, a filler and water to obtain slurry; the slurry is subjected to vacuum dehydration forming, and a plate blank is obtained; pre-curing the plate blank under the condition that the CO2 concentration is 20-30% VOL, and then carrying out carbonization curing under the condition that the CO2 concentration is 60-80% VOL, so as to obtain the fiber cement plate with high fixed carbon content. According to the method, low-concentration CO2 is adopted for pre-curing, a drying box is not used for drying treatment or static curing, the low-concentration CO2 can enable the fiber cement board to be subjected to a preliminary carbonization reaction, heat release is generated, a small amount of water is removed, and the fiber cement board can open a carbonization channel easily. And then high-concentration CO2 carbonization maintenance is carried out, CO2 can enter the board easily, and the carbonization degree and the carbon sequestration amount are increased.
本发明公开了一种高固碳量纤维水泥板及其制备方法。该制备方法包括：将纤维、胶凝组分、填料和水混合，得到浆料；将浆料进行真空脱水成型，得到板坯；将板坯在CO2浓度为20～30％VOL条件下进行预养护，之后在CO2浓度为60～80％VOL条件下进行碳化养护，得到高固碳量纤维水泥板。本发明采用低浓度CO2进行预养护，而非使用干燥箱进行烘干处理或静养，低浓度CO2可使得纤维水泥板发生初步碳化反应，产生放热，并排除少量水分，利于纤维水泥板打开碳化通道。随后进行高浓度CO2碳化养护，有利于CO2进入板材内部，提高碳化程度和固碳量。
Fiber cement board with high fixed carbon content and preparation method thereof
The invention discloses a fiber cement board with high fixed carbon content and a preparation method thereof. The preparation method comprises the following steps: mixing fibers, a gelling component, a filler and water to obtain slurry; the slurry is subjected to vacuum dehydration forming, and a plate blank is obtained; pre-curing the plate blank under the condition that the CO2 concentration is 20-30% VOL, and then carrying out carbonization curing under the condition that the CO2 concentration is 60-80% VOL, so as to obtain the fiber cement plate with high fixed carbon content. According to the method, low-concentration CO2 is adopted for pre-curing, a drying box is not used for drying treatment or static curing, the low-concentration CO2 can enable the fiber cement board to be subjected to a preliminary carbonization reaction, heat release is generated, a small amount of water is removed, and the fiber cement board can open a carbonization channel easily. And then high-concentration CO2 carbonization maintenance is carried out, CO2 can enter the board easily, and the carbonization degree and the carbon sequestration amount are increased.
本发明公开了一种高固碳量纤维水泥板及其制备方法。该制备方法包括：将纤维、胶凝组分、填料和水混合，得到浆料；将浆料进行真空脱水成型，得到板坯；将板坯在CO2浓度为20～30％VOL条件下进行预养护，之后在CO2浓度为60～80％VOL条件下进行碳化养护，得到高固碳量纤维水泥板。本发明采用低浓度CO2进行预养护，而非使用干燥箱进行烘干处理或静养，低浓度CO2可使得纤维水泥板发生初步碳化反应，产生放热，并排除少量水分，利于纤维水泥板打开碳化通道。随后进行高浓度CO2碳化养护，有利于CO2进入板材内部，提高碳化程度和固碳量。
Fiber cement board with high fixed carbon content and preparation method thereof
一种高固碳量纤维水泥板及其制备方法
WANG FAZHOU (author) / LIU ZHICHAO (author) / XIE DAMING (author) / HU SHUGUANG (author)
2024-03-05
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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