Hot pressing process of PBO fiber wet-laid nonwoven materials
| Autor: | LI Zhigang, ZHANG Xing, ZHU Jiahui |
|---|---|
| Jazyk: | čínština |
| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Xi'an Gongcheng Daxue xuebao, Vol 37, Iss 3, Pp 15-20 (2023) |
| Druh dokumentu: | article |
| ISSN: | 1674-649X 1674-649x |
| DOI: | 10.13338/j.issn.1674-649x.2023.03.003 |
| Popis: | In order to improve the mechanical properties of PBO fiber wet-laid forming mesh, the hot pressing process was used to strengthen it, and the Box-Behnken response surface method was used to establish a response surface model by taking three factors of hot pressing temperature, hot pressing pressure and hot pressing time as independent variables, and taking the fracture strength of PBO fiber wet-laid nonwoven materials as the response value. The results show that the established response surface model is significant and has good fit. The Box-Behnken response surface method can predict the fracture strength of PBO fiber wet-laid nonwoven materials, and conclude that the factors affecting the fracture strength of PBO fiber wet-laid nonwoven materials are hot pressing pressure > hot pressing temperature > hot pressing time. The optimize process parameters of hot pressing are hot pressing temperature 245.6 ℃, hot pressing pressure 8.4 MPa, and hot pressing time 9.3 min. The average breaking strength of PBO fiber wet-laid nonwoven material obtained under this process parameter is 393.9 N. |
| Databáze: | Directory of Open Access Journals |
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