Toughening modification of cellulose acetate butyrate and using for CL-20-based polymer bonded explosives
CAB is a binder commonly utilized in CL-20-based mixed explosives. Based on the requirements of CL-20-based polymer bonded explosives in formability, safety, and detonation energy, we explored a high-toughness and low dosage CAB binder system. CAB was subjected to different toughening modifications...
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KeAi Communications Co., Ltd.
2025-04-01
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| Series: | Defence Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214914724002204 |
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| author | Na Li Zhengzheng Zhang Fengqin Shang Shaohua Jin Lijie Li Changgen Feng Jiaming Gao Yu Chen |
| author_facet | Na Li Zhengzheng Zhang Fengqin Shang Shaohua Jin Lijie Li Changgen Feng Jiaming Gao Yu Chen |
| author_sort | Na Li |
| collection | DOAJ |
| description | CAB is a binder commonly utilized in CL-20-based mixed explosives. Based on the requirements of CL-20-based polymer bonded explosives in formability, safety, and detonation energy, we explored a high-toughness and low dosage CAB binder system. CAB was subjected to different toughening modifications and the effects of the modified CAB binders on the bonding and coating of CL-20 crystals, as well as the formability, safety, and mechanical properties of CL-20-based polymer bonded explosive molding powder (MP) were evaluated. The changes in glass transition temperature (Tg) and mechanical properties of the modified binders were investigated using the molecular dynamics simulation at first. A series of modified binders with different molecular weights were then synthesized and characterized by FTIR, 1H NMR, 13C NMR and SEC. The Tg and cross-sectional morphologies of the binder membranes were determined by DSC and SEM. The tensile properties of the binder membranes with different molecular weights and their mixtures with the plasticizer were evaluated at different temperature. With the optimized modified binder, CL-20/CAB and CL-20/CAB-g-PCL-3 MPs with the same plasticizer ratio and Cl-20/CAB-g-PCL-3 MP with a lower plasticizer ratio and higher CL-20 content were prepared and evaluated for the bonding and coating effects, crystal form, mechanical sensitivity and specific heat capacity (Cp) by SEM, XRD, sensitivity testing and DSC, respectively. Their compressive strengths and splitting tensile strengths were measured at different temperature using a universal testing machine. Our work has provided a high-toughness and low-dosage binder system for CL-20-based MPs and offers a novel strategy to improve the formability, safety, and energy of CL-20 based polymer bonded explosives. |
| format | Article |
| id | doaj-art-4d6d800b60f641b3abc8825b9bee90ea |
| institution | DOAJ |
| issn | 2214-9147 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Defence Technology |
| spelling | doaj-art-4d6d800b60f641b3abc8825b9bee90ea2025-08-20T03:10:21ZengKeAi Communications Co., Ltd.Defence Technology2214-91472025-04-0146293910.1016/j.dt.2024.09.004Toughening modification of cellulose acetate butyrate and using for CL-20-based polymer bonded explosivesNa Li0Zhengzheng Zhang1Fengqin Shang2Shaohua Jin3Lijie Li4Changgen Feng5Jiaming Gao6Yu Chen7School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China; China Wuzhou Engineering Group Co. Ltd, Beijing 100053, ChinaGansu Yinguang Chemical Industry Group Co. Ltd, Baiyin 730900, ChinaGansu Yinguang Chemical Industry Group Co. Ltd, Baiyin 730900, ChinaSchool of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, ChinaSchool of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, ChinaSchool of Mechatronical Engineering, Beijing Institute of Technology, Beijing 100081, ChinaSchool of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, ChinaSchool of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China; Corresponding author.CAB is a binder commonly utilized in CL-20-based mixed explosives. Based on the requirements of CL-20-based polymer bonded explosives in formability, safety, and detonation energy, we explored a high-toughness and low dosage CAB binder system. CAB was subjected to different toughening modifications and the effects of the modified CAB binders on the bonding and coating of CL-20 crystals, as well as the formability, safety, and mechanical properties of CL-20-based polymer bonded explosive molding powder (MP) were evaluated. The changes in glass transition temperature (Tg) and mechanical properties of the modified binders were investigated using the molecular dynamics simulation at first. A series of modified binders with different molecular weights were then synthesized and characterized by FTIR, 1H NMR, 13C NMR and SEC. The Tg and cross-sectional morphologies of the binder membranes were determined by DSC and SEM. The tensile properties of the binder membranes with different molecular weights and their mixtures with the plasticizer were evaluated at different temperature. With the optimized modified binder, CL-20/CAB and CL-20/CAB-g-PCL-3 MPs with the same plasticizer ratio and Cl-20/CAB-g-PCL-3 MP with a lower plasticizer ratio and higher CL-20 content were prepared and evaluated for the bonding and coating effects, crystal form, mechanical sensitivity and specific heat capacity (Cp) by SEM, XRD, sensitivity testing and DSC, respectively. Their compressive strengths and splitting tensile strengths were measured at different temperature using a universal testing machine. Our work has provided a high-toughness and low-dosage binder system for CL-20-based MPs and offers a novel strategy to improve the formability, safety, and energy of CL-20 based polymer bonded explosives.http://www.sciencedirect.com/science/article/pii/S2214914724002204Modified CAB bindersCL-20-Based MPsFormabilitySafetyEnergy |
| spellingShingle | Na Li Zhengzheng Zhang Fengqin Shang Shaohua Jin Lijie Li Changgen Feng Jiaming Gao Yu Chen Toughening modification of cellulose acetate butyrate and using for CL-20-based polymer bonded explosives Defence Technology Modified CAB binders CL-20-Based MPs Formability Safety Energy |
| title | Toughening modification of cellulose acetate butyrate and using for CL-20-based polymer bonded explosives |
| title_full | Toughening modification of cellulose acetate butyrate and using for CL-20-based polymer bonded explosives |
| title_fullStr | Toughening modification of cellulose acetate butyrate and using for CL-20-based polymer bonded explosives |
| title_full_unstemmed | Toughening modification of cellulose acetate butyrate and using for CL-20-based polymer bonded explosives |
| title_short | Toughening modification of cellulose acetate butyrate and using for CL-20-based polymer bonded explosives |
| title_sort | toughening modification of cellulose acetate butyrate and using for cl 20 based polymer bonded explosives |
| topic | Modified CAB binders CL-20-Based MPs Formability Safety Energy |
| url | http://www.sciencedirect.com/science/article/pii/S2214914724002204 |
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