考察三羟甲基丙烷交联剂对推进剂粘合剂体系三硝酸丁三醇增塑聚己内酯聚合物网络的影响,Propellants, Explosives, Pyrotechnics

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考察三羟甲基丙烷交联剂对推进剂粘合剂体系三硝酸丁三醇增塑聚己内酯聚合物网络的影响
Propellants, Explosives, Pyrotechnics ( IF 1.7 ) Pub Date : 2022-04-25 , DOI: 10.1002/prep.202100377
Mada SSNM Santosh ₁ , Vaibhav S Sadavarte ₁ , Amit Kumar ₁ , Shrikant M Pande ₁ , Prashant S Kulkarni ₂

Affiliation

聚合物网络特性的知识对于调整基于硝酸酯增塑多元醇粘合剂体系的先进高能推进剂的性能非常重要。在本文中，聚己内酯 (PCP) 和端羟基聚丁二烯 (HTPB) 的增塑聚氨酯网络具有不同的交联剂含量 [0 至 0.20 份] 在不同的化学计量 $骨灰盒：x-wiley：07213115：媒体：prep202100377：prep202100377-math-0001$ 比率（r 值）[0.8 到 1.0] 进行了研究。使用 0、0.05、0.10、0.15 和 0.20 份的三羟甲基丙烷 (TMP) 交联剂，在 r 值分别为 0.8、0.9 和 1.0 时配制了五种 1,2,4-丁二醇三硝酸酯 (BTTN) 增塑 PCP 的聚氨酯网络。类似地，五种己二酸二辛酯 (DOA) 增塑 HTPB 基聚氨酯网络的 r 值为 0.8。记录这些聚氨酯网络 (PUN) 的 FT-IR 光谱用于官能团鉴定。研究了 PUN 的应力-应变行为，以了解 TMP 含量和 r 值对机械性能的影响。计算了 PUNs 的硬段含量，并评估了其对网络特性和力学性能的影响。_e（溶剂溶胀法）> _νne2（初始模量法）> _νne1（Mooney Rivlin法）。

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Examining the Effect of Trimethylol Propane Crosslinker on Butanetriol Trinitrate Plasticized Polycaprolactone Polymer Networks of Propellant Binder System

The knowledge of polymer network characteristics is important to tune the properties of advanced energetic propellants based on nitrate ester plasticized polyol binder system. In this article, plasticized polyurethane networks of polycaprolactone (PCP) and hydroxyl-terminated polybutadiene (HTPB) with different crosslinker content [0 to 0.20 parts] at various stoichiometric $urn:x-wiley:07213115:media:prep202100377:prep202100377-math-0001$ ratios (r-value) [0.8 to 1.0] were studied. Five numbers of polyurethane networks of 1,2,4-butanediol trinitrate (BTTN) plasticised PCP were formulated at each r value 0.8, 0.9 and 1.0 using 0, 0.05, 0.10, 0.15 and 0.20 parts of trimethylolpropane (TMP) crosslinker. Similarly, five numbers of dioctyl adipate (DOA) plasticized HTPB based polyurethane networks were formulated at r-value of 0.8. FT-IR spectra of these polyurethane networks (PUNs) were recorded for functional group identification. Stress-strain behavior of PUNs was studied for understanding the effect of TMP content and r value on mechanical properties. Hard segment content of PUNs were calculated and its influence on network characteristics and mechanical properties was evaluated. CLD values (ν) increased with increase of hard segment content of PUN and the values quantified by different approaches followed the trend ν_e (by solvent swelling method) > ν_ne2(by Initial modulus method)>ν_ne1 (by Mooney Rivlin method).

更新日期：2022-04-25

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