Catalyzed HTPB/HDI-Trimer Curing Reactions and Influence on Pot Life
Source abstract
Abstract
In this research, rheokinetics is used to study the curing reaction of hydroxyl terminated polybutadiene (HTPB) and trimer of hexamethylene-1,6-diisocyanate (HDI-trimer) with 1,4-diazabicyclo[2.2.2]octane (DABCO) as catalyst under different catalyst mass fraction. The results show that the pot life of the system depends on the catalyst mass fraction in the binder system. Furthermore, with increased catalyst mass fraction, the fitting diagram obtained by plotting ln (viscosity) versus curing time shows a better linear relationship. Therefore, the amount of catalyst required to achieve a certain pot life can be calculated through the formula. It is worth mentioning that the applicable pot life equations are proposed in the paper. From the equations, we find that under isothermal curing conditions at 35 °C, when the mass fraction of DABCO was 0.216 wt.%, the pot life of the HTPB/HDI-trimer binder system reaches 4 h.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Polymer composites and self-healing · Polymer Nanocomposites and Properties · Epoxy Resin Curing Processes
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Materials and Environmental Engineering, Chengdu Technological University, Chengdu 611730, China
School of Environment and Safety Engineering, North University of China, Taiyuan 030051, China
Department of ESH, Science and Technology University of Sichuan Staff, Chengdu 610101, China
Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518000, China
Shanxi Research Institute of Applied Chemistry, Taiyuan 030027, China
Academic Affairs Office, Chengdu Technological University, Chengdu 611730, China
Funding
NSAF · Chengdu Technological University Start-up Project of Introducing Talents · Shenzhen Free Exploration Project for Basic Research of Science and Technology Program
References (30)
Show source-provided references
1. An investigation of the effects of pre-polymer functionality on the curing behavior and mechanical properties of HTPB-based polyurethane10.1016/j.jiec.2014.09.025 ↗
2. Guo, J., Chai, T., Liu, Y., Cui, J., Ma, H., Jing, S., Zhong, L., Qin, S., Wang, G., and Ren, X. (2018). Kinetic research on the curing reaction of hydroxyl-terminated polybutadiene based polyurethane binder system via FT-IR measurements. Coatings, 8.10.3390/coatings8050175 ↗
3. Synthesis and properties of a nano-silica modified environmentally friendly polyurethane adhesive10.1039/C5RA01965F ↗
4. TG studies of a composite solid rocket propellant based on HTPB-binder10.1023/B:JTAN.0000041659.97749.fe ↗
5. Effect of burning rate modifiers on subatmospheric flame temperatures of AP/HTPB composite solid propellants
6. HNF/HTPB propellants: Influence of HNF particle size on ballistic properties10.1016/j.combustflame.2009.03.007 ↗
7. Yijun, L. (2013). Handbook of Raw Materials and Additives for Polyurethanes, Chemical Industry Press. [2nd ed.].
8. Improving the oxidative stability of shape memory polyurethanes containing tertiary amines by the presence of isocyanurate triols10.1021/acs.macromol.8b01925 ↗
9. Toughening modification of unsaturated polyester resin using HDI trimer10.1007/s11595-009-4627-2 ↗
10. Rheokinetic analysis on the formation of metallo-polyurethanes based on hydroxyl-terminated polybutadiene10.1016/j.eurpolymj.2013.10.013 ↗
11. Kinetic and thermodynamic studies of the urethane reaction based on 1, 3-diazetidine-2, 4-dione and 4-(Tetrahydro-Pyran-2-yloxy)-butan-1-ol10.1080/1023666X.2014.872816 ↗
12. Evaluation of criteria for blending hydroxy terminated polybutadiene (HTPB) polymers based on viscosity build-up and mechanical properties of gumstock10.1016/S0014-3057(99)00232-3 ↗
13. Synthesis of a novel silica modified environmentally friendly waterborne polyurethane matting coating10.1016/j.porgcoat.2019.105441 ↗
14. On the viscosity of composite suspensions of aluminum and ammonium perchlorate particles dispersed in hydroxyl terminated polybutadiene—New empirical model10.1016/j.jcis.2006.03.004 ↗
15. Issues related with pot life extension for hydroxyl-terminated polybutadiene-based solid propellant binder system10.1002/prep.201400054 ↗
16. DSC study on the effect of isocyanates and catalysts on the HTPB cure reaction10.1007/s10973-005-0442-0 ↗
17. In-situ characterization of the cure reaction of HTPB and IPDI by simultaneous NMR and IR measurements10.1016/j.polymertesting.2010.03.001 ↗
18. A DSC study on cure kinetics of HTPB-IPDI urethane reaction10.1023/A:1010127727162 ↗
19. Polyurethane coatings for metal and plastic substrates10.1016/S0026-0576(00)80405-5 ↗
20. Kinetic studies of isophorone diisocyanate-polyether polymerization with in situ FT-IR10.1080/1023666X.2011.622107 ↗
21. Synthesis of glycerol carbonate from the transesterification of dimethyl carbonate with glycerol using DABCO and DABCO-anchored merrifield resin10.1016/j.apcatb.2014.10.071 ↗
22. Rheological behaviour of HTPB-based composite propellant: Effect of temperature and pot life on casting rate10.14429/dsj.57.1791 ↗
23. Daniel, M.A. (2006). Polyurethane Binder Systems for Polymer Bonded Explosives, Defence Science and Technology Organisation—Weapons Systems DIV. No. DSTO-GD-0492.
24. Mechanical properties of HTPB-IPDI-based elastomers10.1002/(SICI)1097-4628(19970620)64:12<2347::AID-APP9>3.0.CO;2-L ↗
25. Rheo-kinetic evaluation on the formation of urethane networks based on hydroxyl- terminated polybutadiene10.1002/1097-4628(20010307)79:10<1869::AID-APP160>3.0.CO;2-7 ↗
26. Bonding of composite propellant in cast-in-case rocket motors10.2514/3.28461 ↗
27. Highly cross-linked shape memory polymers with tunable oxidative and hydrolytic degradation rates and selected products based on succinic acid10.1021/acsabm.8b00650 ↗
28. Chemorheology of thermosets—An overview10.1002/pen.10447 ↗
29. Kinetic and statistical aspects of the formation of polyurethanes from toluene diisocyanate10.1016/0032-3861(86)90160-6 ↗
30. Tuning the optical properties of high solid waterborne polyurethane from matt to anti-glare10.1016/j.porgcoat.2018.10.019 ↗