2020
DOI: 10.3390/polym12020403
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Influence of Thermally-Accelerated Aging on the Dynamic Mechanical Properties of HTPB Coating and Crosslinking Density-Modified Model for the Payne Effect

Abstract: Hydroxyl terminated polybutadiene (HTPB) coating is widely used in a solid rocket motor, but an aging phenomenon exists during long-term storage, which causes irreversible damage to the performance of this HTPB coating. In order to study the effect of aging on the dynamic mechanical properties of the HTPB coating, the thermally-accelerated aging test was carried out. The variation of maximum elongation and crosslinking density with aging time was obtained, and a good linear relationship between maximum elongat… Show more

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Cited by 17 publications
(19 citation statements)
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“…This is due to the aging effect of the sample under thermal treatment. [ 50,51 ] Correspondingly, the viscous modulus ( G ″) of the healed sample was also decreased compared to the pristine sample. However, in the UV‐triggered healing process, there was no significant change in the elastic ( G ′) and the viscous ( G ″) moduli as shown in Figure 6b.…”
Section: Resultsmentioning
confidence: 99%
“…This is due to the aging effect of the sample under thermal treatment. [ 50,51 ] Correspondingly, the viscous modulus ( G ″) of the healed sample was also decreased compared to the pristine sample. However, in the UV‐triggered healing process, there was no significant change in the elastic ( G ′) and the viscous ( G ″) moduli as shown in Figure 6b.…”
Section: Resultsmentioning
confidence: 99%
“…Tan δ is equal to the ratio of the loss modulus to the storage modulus and its curve peak point corresponding temperature is defined as T g . 46 The loss factor tan δ curves of the various samples are shown in Fig. 16 .…”
Section: Resultsmentioning
confidence: 99%
“…* associated with the destruction of the macromolecular chain of rubber. [20][21][22][23][24] In rubber mixtures containing experimental-industrial stabilizers CO3, CO4, and Staten, the difference in the values G' j . * before and after aging is the smallest.…”
Section: Resultsmentioning
confidence: 99%