Synthesis of multifunctional additives for solid propellants: Structure, properties and mechanism
To simplify the composite propellant formulation and address the current issue of the single-functionality present in existing additives, the multi-cyano, amine-based polybutadiene (AEHTPB-CN) was prepared based on AEHTPB by adopting appropriate synthesis strategies. By replacing 10% of HTPB binder...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2024-03-01
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| Series: | Defence Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214914723001678 |
| _version_ | 1797238073406259200 |
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| author | Pingan Zhang Lina Sun Jianmin Yuan Jianru Deng |
| author_facet | Pingan Zhang Lina Sun Jianmin Yuan Jianru Deng |
| author_sort | Pingan Zhang |
| collection | DOAJ |
| description | To simplify the composite propellant formulation and address the current issue of the single-functionality present in existing additives, the multi-cyano, amine-based polybutadiene (AEHTPB-CN) was prepared based on AEHTPB by adopting appropriate synthesis strategies. By replacing 10% of HTPB binder in the propellant formulation, it can effectively enhance the interfacial bond strength between the propellant binder matrix and solid fillers (AP (ammonium perchlorate) and RDX (cyclotrimethylene-trinitramine)), the mechanical properties of the HTPB/AP/RDX/Al propellant were superior to blank control propellant with an improvement of 35.4% in tensile strength, 62.0% enhancement in elongation at break, and reduce the propellant burn rate by 10.7% with any energy loss. The function mechanism of AEHTPB-CN was systematically elucidated through experiments and computer simulation techniques. The results show that the tertiary amine group in AEHTPB-CN can react with AP to form ammonium ionic bonds, and the hydroxyl and cyano groups can form hydrogen bonding interactions with AP, which enables AEHTPB-CN to be firmly adsorbed on the AP surface through chemical and physical interactions. For RDX, the interfacial bonding effect of AEHTPB-CN is attributed to their ability to form C–H⋅⋅⋅N≡C weak hydrogen bonding interaction between the cyano group and RDX methylene group. |
| first_indexed | 2024-04-24T17:29:51Z |
| format | Article |
| id | doaj.art-da60bbcc386c487faee095d972bdd04e |
| institution | Directory Open Access Journal |
| issn | 2214-9147 |
| language | English |
| last_indexed | 2024-04-24T17:29:51Z |
| publishDate | 2024-03-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Defence Technology |
| spelling | doaj.art-da60bbcc386c487faee095d972bdd04e2024-03-28T06:37:57ZengKeAi Communications Co., Ltd.Defence Technology2214-91472024-03-0133308316Synthesis of multifunctional additives for solid propellants: Structure, properties and mechanismPingan Zhang0Lina Sun1Jianmin Yuan2Jianru Deng3College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR ChinaHu Bei Sanjiang Aerospace Jianghe Chemical Technology Co., Ltd, Yichang 444200, PR ChinaCollege of Material Science and Engineering, Hunan University, Changsha 410082, PR ChinaCollege of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China; Corresponding author.To simplify the composite propellant formulation and address the current issue of the single-functionality present in existing additives, the multi-cyano, amine-based polybutadiene (AEHTPB-CN) was prepared based on AEHTPB by adopting appropriate synthesis strategies. By replacing 10% of HTPB binder in the propellant formulation, it can effectively enhance the interfacial bond strength between the propellant binder matrix and solid fillers (AP (ammonium perchlorate) and RDX (cyclotrimethylene-trinitramine)), the mechanical properties of the HTPB/AP/RDX/Al propellant were superior to blank control propellant with an improvement of 35.4% in tensile strength, 62.0% enhancement in elongation at break, and reduce the propellant burn rate by 10.7% with any energy loss. The function mechanism of AEHTPB-CN was systematically elucidated through experiments and computer simulation techniques. The results show that the tertiary amine group in AEHTPB-CN can react with AP to form ammonium ionic bonds, and the hydroxyl and cyano groups can form hydrogen bonding interactions with AP, which enables AEHTPB-CN to be firmly adsorbed on the AP surface through chemical and physical interactions. For RDX, the interfacial bonding effect of AEHTPB-CN is attributed to their ability to form C–H⋅⋅⋅N≡C weak hydrogen bonding interaction between the cyano group and RDX methylene group.http://www.sciencedirect.com/science/article/pii/S2214914723001678Hydroxyl-terminated polybutadiene (HTPB)HTPB propellantChemical modificationBonding agentMechanism |
| spellingShingle | Pingan Zhang Lina Sun Jianmin Yuan Jianru Deng Synthesis of multifunctional additives for solid propellants: Structure, properties and mechanism Defence Technology Hydroxyl-terminated polybutadiene (HTPB) HTPB propellant Chemical modification Bonding agent Mechanism |
| title | Synthesis of multifunctional additives for solid propellants: Structure, properties and mechanism |
| title_full | Synthesis of multifunctional additives for solid propellants: Structure, properties and mechanism |
| title_fullStr | Synthesis of multifunctional additives for solid propellants: Structure, properties and mechanism |
| title_full_unstemmed | Synthesis of multifunctional additives for solid propellants: Structure, properties and mechanism |
| title_short | Synthesis of multifunctional additives for solid propellants: Structure, properties and mechanism |
| title_sort | synthesis of multifunctional additives for solid propellants structure properties and mechanism |
| topic | Hydroxyl-terminated polybutadiene (HTPB) HTPB propellant Chemical modification Bonding agent Mechanism |
| url | http://www.sciencedirect.com/science/article/pii/S2214914723001678 |
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