Preparation and Properties of Acetoacetic Ester-Terminated Polyether Pre-Synthesis Modified Phenolic Foam
1
Plastic Engineering Research Center of Shenyang University of Chemical Technology, Shenyang 110142, China
2
Liaoning Polymer Materials Engineering and Technology Research Center, Shenyang 110142, China
3
Shenyang Huada and Kangping Plastic Woven Research Institute, Shenyang 110142, China
4
Yingkou Sounrun New Material Engineering Technology Co., Ltd., Yingkou 115000, China
*
Author to whom correspondence should be addressed.
Materials 2019, 12(3), 334; https://doi.org/10.3390/ma12030334
Received: 25 December 2018
/
Revised: 10 January 2019
/
Accepted: 17 January 2019
/
Published: 22 January 2019
In the present study, acetoacetic ester-terminated polyether was selected as a modifier to prepare a new type of polyether phenolic resin, which was successfully prepared by pre-synthesis modification. It is used to prepare interpenetrating cross-linked network structure modified phenolic foam with excellent mechanical properties. Fourier transform infrared spectroscopy (FT-IR) and nuclear magnetic resonance (1H NMR, 13C NMR) were used to characterize the molecular structure of the polyether phenolic resin. The results showed that the acetoacetic ester-terminated polyether successfully modified the phenolic resin and introduced a polyether skeleton into the resin structure. The effect of changing the added amount of acetoacetic ester-terminated polyether from 10% to 20% of the phenol content on the mechanical properties and microstructure of the modified phenolic foam was investigated. The results showed that when the amount of acetoacetic ester-terminated polyether was 16% the amount of phenol, this resulted in the best toughness of the modified foam, which had a bending deflection that could be increased to more than three times that of the base phenolic foam. The modified phenolic foam cell diameter was reduced by 36.3%, and the distribution was more uniform, which formed a denser network structure than that of the base phenolic foam. The bending strength was increased by 0.85 MPa, and the pulverization rate was as low as 1.3%.
View Full-Text
Keywords:
acetoacetic ester-terminated polyether; pre-synthesis modification; phenolic foam; toughness
▼
Show Figures
Graphical abstract
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited
- Supplementary File 1:
PDF-Document (PDF, 119 KiB)
MDPI and ACS Style
Ge, T.; Tang, K.; Tang, X. Preparation and Properties of Acetoacetic Ester-Terminated Polyether Pre-Synthesis Modified Phenolic Foam. Materials 2019, 12, 334. https://doi.org/10.3390/ma12030334
AMA Style
Ge T, Tang K, Tang X. Preparation and Properties of Acetoacetic Ester-Terminated Polyether Pre-Synthesis Modified Phenolic Foam. Materials. 2019; 12(3):334. https://doi.org/10.3390/ma12030334
Chicago/Turabian StyleGe, Tiejun, Kaihong Tang, and Xiaojun Tang. 2019. "Preparation and Properties of Acetoacetic Ester-Terminated Polyether Pre-Synthesis Modified Phenolic Foam" Materials 12, no. 3: 334. https://doi.org/10.3390/ma12030334
Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.
