The behavior of antioxidant irganox 1010 during the thermal degradation of a plastic bonded explosive

Yang, Dali; Upshaw, David; Edgar, Alexander Steven; Rosales, Christopher James

doi:10.1016/j.polymdegradstab.2022.109928

The behavior of antioxidant irganox 1010 during the thermal degradation of a plastic bonded explosive

Journal Article · Wed Apr 06 00:00:00 UTC 2022 · Polymer Degradation and Stability

DOI:https://doi.org/10.1016/j.polymdegradstab.2022.109928· OSTI ID:1863745

^[1]; Upshaw, David ^[2]; ^[1]; Rosales, Christopher James ^[1]

Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Los Alamos National Lab. (LANL), Los Alamos, NM (United States); McMurry Univ., Abilene, TX (United States)

The effect of water concentration on the aging behavior of blend components in plastic bonded explosive (PBX) 9501 is investigated when samples were aged up to 24 months under various conditions. Additionally, the blend components studied here are: poly(urethane ester) (Estane®5703) (Estane), nitroplasticizer (NP), and antioxidant Irganox 1010 (Irg1010). The experimental results reveal that NP is prone to thermally degrading and producing H₂O, NO_x, and HNO_x species, which are the predominant species to consume Irg1010 during PBX 9501 aging under inert environment. As Irg1010 is completely consumed, Estane degrades through oxidation and NP addition, in addition to well anticipated hydrolysis. The competition among hydrolysis, oxidation, and NP addition results in non-monotonical changes in the molecular weight of Estane over the aging process.

View Accepted Manuscript (DOE)

Research Organization:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE; USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: 89233218CNA000001

OSTI ID:: 1863745

Alternate ID(s):: OSTI ID: 1864601

Report Number(s):: LA-UR-21-31265

Journal Information:: Polymer Degradation and Stability, Journal Name: Polymer Degradation and Stability Vol. 200; ISSN 0141-3910

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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