Study of the Interfacial Interaction Performance of Branched Bonding Agents and CL-20

Abstract

Adding bonding agents to the formulation is an effective way to solve the dewetting of 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane (CL-20) in the binder matrix. For the design and selection of the structure of a bonding agent suitable for CL-20, a series of branched polyether bonding agents with terminal groups substituted by cyano, ester and hydroxyl functional groups were employed. Contact angle, Fourier transform infrared spectra (FTIR) and X-ray photoelectron spectroscopy (XPS) measurements were performed, and the results were compared with that of common bonding agent, the boron trifluoride triethanolamine complex (TEA·BF3). The results revealed that the nitramine reinforcement of the three polar groups to CL-20 was in the order cyano group > hydroxyl group > ester group. It is proposed that CBPE-10,10 (cyano-terminated branched polyether bonding agent) had the strongest interfacial interaction with CL-20. The adhesion work value was 105.37 mN⋅m−1 and the adhesion degree was 41.04%. The bonding properties of CBPEs/CL-20 were better than those of TEA·BF3/CL-20.

Electrocatalytic hydrogen production by CN– substituted cobalt triaryl corroles

“…Also, the peak of the cyano group N of complexes 2 , 3 , and 4 emerges at 399.2, 399.2 and 399.3 eV which are similar to previous research. 48 In Fig. 3(b), the peaks of Co 2p 2/3 and Co 2p 1/2 of complexes 1 , 2 , 3 , and 4 can be fitted to two distinct peaks with binding energies of 794.6/779.4, 794.7/779.5, 794.8/779.6 and 795.0/779.6 eV which are consistent with previous research about the Co III oxidation state.…”

Research Progress of Bonding Agents and Their Performance Evaluation Methods

“…The SEM and DMA analyses revealed that CL-20 was well coated, the elongation at break of propellant film was increased by 10%, and the maximum elongations at high temperature and low temperature were increased by 20-30%. Deng et al [74].and Zhao et al [75] respectively compared the binding effects of different hyperbranched polyether bonding agents (BA3, CBPEs, and BPEs) and small molecule bonding agents on solid fillers. The adhesions between BA3/HMX and CBPE-10 and 10/CL-20 reached 67.27 mN•m −1 and 105.37 mN•m −1 , stronger than those between the small molecule bonding agent/solid filler system.…”