Covalent integration of differently structured polyester polyols improves the toughness and strength of cationically polymerized, amorphous epoxy networks
Covalent integration of differently structured polyester polyols improves the toughness and strength of cationically polymerized, amorphous epoxy networks
复制标题
不同结构的聚酯多元醇的共价结合提高了阳离子聚合、无定形环氧网络的韧性和强度
DOI:
10.1002/app.43986
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发表时间:
2016
影响因子:
3
通讯作者:
A. Hartwig
中科院分区:
文献类型:
--
作者:
A. Arnebold;S. Wellmann;A. Hartwig
The structure–property relationship of polyester polyols in cationically polymerized, amorphous epoxy‐based copolymers is investigated. An epoxy resin is polymerized in the presence of structurally different polyesters. These resulting copolymers show improved tensile strength and toughness. The optimal epoxide/polyester ratio depends on the structure of the polyesters. Poly(δ‐valerolactone) (PVL) reveals the highest ester group density of the investigated polyesters, which enhances physical interactions with the epoxide during polymerization as well as in the network. Furthermore, PVL leads to outstanding tensile strength, strain at break, and toughness. Among all polyester polyols examined, PVL leads to the highest gel fraction or, in other words, the most complete integration into the epoxy network. This work shows that polyesters that are present in the reactive system should be covalently integrated into the polymer network as completely as possible to obtain good mechanical properties of the amorphous copolymer. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci.2016,133, 43986.
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DOI:
--
发表时间:
1981
期刊:
影响因子:
--
作者:
M. R. Tant;G. Wilkes
通讯作者:
G. Wilkes
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
A. Hartwig;A. Lühring;J. Trautmann
通讯作者:
J. Trautmann
影响因子:
3.9
作者:
Andre Arnebold;K. Thiel;E. Kentzinger;A. Hartwig
通讯作者:
Andre Arnebold;K. Thiel;E. Kentzinger;A. Hartwig
影响因子:
4.6
作者:
Arnebold, A.;Wellmann, S.;Hartwig, A.
通讯作者:
Hartwig, A.
影响因子:
4.6
作者:
Arnebold, Andre;Hartwig, Andreas
通讯作者:
Hartwig, Andreas