| Autor: |
WU Wang-qing, LIU Yi, XIANG Yang-hui, FU Ji-xian |
| Jazyk: |
čínština |
| Rok vydání: |
2019 |
| Předmět: |
|
| Zdroj: |
Cailiao gongcheng, Vol 47, Iss 10, Pp 154-159 (2019) |
| Druh dokumentu: |
article |
| ISSN: |
1001-4381 |
| DOI: |
10.11868/j.issn.1001-4381.2018.000806 |
| Popis: |
A new strategy with gradient cooling method was proposed for characterizing the rheological properties of CBT pure resin and CBT/catalyst mixture system under special molding conditions based on a digital high-temperature rotary viscometer. The results show that the apparent viscosity of CBT pure resin can be accurately obtained by using the gradient cooling method. The apparent viscosity of CBT pure resin is increased with the decrease of temperature, and is decreased with the increase of the rotating speed, and shows a significant shear thinning phenomenon at 170-180℃.The reaction rate of the CBT/catalyst resin system is increased with the increase of the catalyst content, and the molding window time is shortened. Under the same concentration conditions, the CBT/T9 system with higher tin content has a faster reaction rate than the CBT500/DBTL system. With the increase of molding temperature, the reaction rate of CBT/catalyst system shows the trend of slowing down. This may be due to the increased volatilization of the catalyst and the decreased crystallization rate at higher molding temperature. Finally, the effects of different catalyst types, different concentrations and molding temperatures on the molding window time of CBT resin system were studied. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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