Fabrication and Curing Kinetics of Thermal Insulation Material Suitable for Deep-Earth Extreme Environments
Source abstract
Abstract
In the extreme high-temperature (up to 150 °C) and high-pressure (up to 140 MPa) conditions of deep in situ condition-preserved coring devices, high-strength epoxy resin was selected as the insulation layer. The non-isothermal DSC method was employed at heating rates of 2.5, 5, 10, 15, and 20 °C/min, revealing that increasing the heating rate elevates curing temperatures, expands the curing range, and enhances curing rate and heat release. The curing kinetics were modeled using n-order and autocatalytic approaches, with the latter accurately describing the behavior. Optimized integration process conditions (80 °C/4 h + 150 °C/2 h + 180 °C/3 h) yielded epoxy with compressive strength of 204.47 MPa, initial thermal decomposition temperature of 345.9 °C, thermal conductivity of 0.246 W/m·K, and Tg of 193.04 °C (storage modulus 2.41 GPa at 150 °C). As insulation, it reduces rock core heat loss by 32.38% (8.78 × 104 J) and active heating demand by 44 W, enhancing system stability for in situ temperature preservation.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Polymer Nanocomposites and Properties · Aerogels and thermal insulation · Epoxy Resin Curing Processes
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, China
State Key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground Engineering, Sichuan University, Chengdu 610065, China
Institute of Deep Earth Sciences and Green Energy, College of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518060, China
School of Mechanical Engineering, Sichuan University, Chengdu 610065, China
College of Water Resource & Hydropower, Sichuan University, Chengdu 610065, China
School of Future Technology, Shandong University, Jinan 250061, China
Funding
the Coal-Major Project · Ministry of Education of China · China Postdoctoral Science Foundation · National Key Research and Development Program of China · State Key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground Engineering
References (61)
Show source-provided references
1. Energy Institute (2023). Statistical Review of World Energy, KPMG.
2. Improved methods for determining effective sandstone reservoirs and evaluating hydrocarbon enrichment in petroliferous basins10.1016/j.apenergy.2019.114457 ↗
3. In-situ pressure-preserved coring for deep exploration: Insight into the rotation behavior of the valve cover of a pressure controller10.1016/j.petsci.2023.02.020 ↗
4. Conceptualization and preliminary research on deep in situ rock mechanics
5. Research framework and anticipated results of deep rock mechanics and mining theory
6. In-situ pressure-preserved coring for deep oil and gas exploration: Design scheme for a coring tool and research on the in-situ pressure-preserving mechanism10.1016/j.energy.2023.129519 ↗
7. Quantitative definition and investigation of deep mining
8. Research and development of rock mechanics in deep ground engineering
9. Study on concept and progress of in situ fidelity coring of deep rocks
10. Petroleum geology features and research developments of hydrocarbon accumulation in deep petroliferous basins10.1007/s12182-015-0014-0 ↗
11. Temperature-induced deformational responses and microstructural alteration of sandstone10.1016/j.petrol.2020.107239 ↗
12. 4D in situ synchrotron X-ray tomographic microscopy and laser-based heating study of oil shale pyrolysis10.1016/j.apenergy.2018.11.044 ↗
13. Studying the acoustic emission response of an Indian monumental sandstone under varying temperatures and strains10.1016/j.conbuildmat.2018.02.180 ↗
14. Microstructural imaging and characterization of oil shale before and after pyrolysis10.1016/j.fuel.2017.02.030 ↗
15. Understanding Thermal Insulation in Porous, Particulate Materials10.1002/adfm.201702256 ↗
16. Mechanical and Acoustic Emission Characteristics of Coal at Temperature Impact10.1007/s11053-019-09562-w ↗
17. Experimental Investigation on Coal Deterioration Deformation Mechanism and Energy Evolution Law after High Temperature Pre-damage10.1007/s10706-021-01954-1 ↗
18. Effects of heating temperature on pore structure evolution of briquette coals10.1016/j.fuel.2021.120651 ↗
19. Study for the Effect of Temperature on Methane Desorption Based on Thermodynamics and Kinetics10.1021/acsomega.0c05236 ↗
20. The temperature effect on the methane and CO2 adsorption capacities of Illinois coal10.1016/j.fuel.2017.09.046 ↗
21. Experimental Study on the Thermal Effect during Gas Adsorption and Desorption on the Coal Surface10.1021/acsomega.0c05505 ↗
22. Temperature dependence of sorption of gases by coals and charcoals10.1016/j.coal.2007.05.001 ↗
23. Research on in-situ condition preserved coring and testing systems10.1016/j.petsci.2021.11.003 ↗
24. Hollow glass microspheres/silicone rubber composite materials toward materials for high performance deep in-situ temperature-preserved coring10.1016/j.petsci.2021.11.012 ↗
25. Yu, B., He, Z., Yang, J., Wei, Z., Li, C., and Xie, H. (2023). Innovative Design of a Conductive Center Pole for an Active Thermal Insulation and Coring System in Deep Rock. Appl. Sci., 13.10.3390/app13031242 ↗
26. Zhang, Y.D., Jiang, Z.L., Yu, P., Yu, Z.Y., Tao, J., Wang, D.H., Deng, W.P., Liu, W.P., Xu, Z.H., and Duan, X.Q. (2006). NGH Deepwater Shallow Hole Heat Preservation and Pressure Holding Core Drilling Tool. (Patent CN1818323).
27. A Pressure and Temperature Preservation System for Gas-hydrate-bearing Sediments Sampler10.1080/10916466.2010.531352 ↗
28. Design and strength analysis of the passive thermal insulation structure of a deep rock in-situ thermal insulation coring system10.2298/TSCI2301623S ↗
29. Pressure and temperature preservation techniques for gas-hydrate-bearing sediments sampling10.1016/j.energy.2011.03.053 ↗
30. High-Strength Hollow Glass Microsphere/Epoxy Resin Composite Insulation Materials for Deep In-Situ Condition Preserved Coring
31. Carriço, C.S., Fraga, T., Carvalho, V.E., and Pasa, V.M.D. (2017). Polyurethane Foams for Thermal Insulation Uses Produced from Castor Oil and Crude Glycerol Biopolyols. Molecules, 22.10.20944/preprints201704.0131.v1 ↗
32. Xing, Z., Ke, H., Wang, X., Zheng, T., Qiao, Y., Chen, K., Zhang, X., Zhang, L., Bai, C., and Li, A.Z. (2020). Investigation of the Thermal Conductivity of Resin-Based Lightweight Composites Filled with Hollow Glass Microspheres. Polymers, 12.10.3390/polym12030518 ↗
33. Oriented BN/Silicone rubber composite thermal interface materials with high out-of-plane thermal conductivity and flexibility10.1016/j.compositesa.2021.106681 ↗
34. Lower thermal conductivity and outstanding compressive strength of oxide fiber porous ceramics10.1111/ijac.15181 ↗
35. Synthesis and characterization of diphenylsilanediol modified epoxy resin and curing agent10.1080/01694243.2014.1003177 ↗
36. Molecular dynamics simulation of crosslinked epoxy resins: Curing and mechanical properties10.1016/j.eurpolymj.2016.04.019 ↗
37. Analysis of curing kinetics in polymer composites10.1002/pol.1973.130110808 ↗
38. Study on curing reaction of epoxy used in composites by non- isothermal DSC method
39. Effect of chemical structure on thermo-mechanical properties of epoxy polymers: Comparison of accelerated ReaxFF simulations and experiments10.1016/j.polymer.2018.11.005 ↗
40. Preparation, curing kinetic and properties of a novel amine with flexible polyoxypropylene side chain curing agent for epoxy resin10.1016/j.tca.2014.05.026 ↗
41. Applicability of the master plots in kinetic analysis of non-isothermal data10.1016/0040-6031(89)85192-5 ↗
42. Curing kinetics of epoxy resin by non-isothermal DSC method
43. Kinetic analysis of crystallization processes in amorphous materials10.1016/S0040-6031(00)00449-4 ↗
44. Reaction kinetics in differential thermal analysis10.1021/ac60131a045 ↗
45. Model-fitting and model-free nonisothermal curing kinetics of epoxy resin with a low-volatile five-armed starlike aliphatic polyamine10.1016/j.tca.2011.07.018 ↗
46. Bashir, M.A. (2023). Cure kinetics of commercial epoxy-amine products with ISO-conversional methods. Coatings, 13.10.3390/coatings13030592 ↗
47. The kinetic analysis of non-isothermal data10.1016/0040-6031(92)85118-F ↗
48. Rational approximations of the integral of the Arrhenius function10.1007/BF01903696 ↗
49. Sestak, J. (2005). Science of Heat and Thermophysical Studies: A Generalized Approach to Thermal Analysis, Elsevier.
50. Tcharkhtchi, A., Nony, F., Khelladi, S., Fitoussi, J., and Farzaneh, S. (2015). Epoxy/amine reactive systems for composites materials and their thermomechanical properties. Advances in Composites Manufacturing and Process Design, Elsevier.10.1016/B978-1-78242-307-2.00013-0 ↗
51. Design of passive insulation system and optimization of thermal insulation material for deep in-situ condition-preserved coring10.46690/ager.2025.02.03 ↗
52. Diffusion and diffusion-controlled kinetics during epoxy-amine cure10.1021/ma00096a043 ↗
53. Curing kinetics and chemorheology of epoxy/anhydride system10.1002/app.12976 ↗
54. Moller, J.C., Berry, R.J., and Foster, H.A. (2020). On the Nature of Epoxy Resin Post-Curing. Polymers, 12.10.3390/polym12020466 ↗
55. (1992). Plastics—Determination of Compressive Properties (Standard No. GB/T 1041–1992).
56. Reaction kinetics, thermal properties of tetramethyl biphenyl epoxy resin cured with aromatic diamine10.1002/app.26340 ↗
57. Yang, H., Deng, Z., Shi, M., and Huang, Z. (2025). High-Thermal-Conductivity Graphene/Epoxy Resin Composites: A Review of Reinforcement Mechanisms, Structural Regulation and Application Challenges. Polymers, 17.10.3390/polym17172342 ↗
58. Transient hyperbolic heat conduction in a functionally graded hollow cylinder10.2514/1.41368 ↗
59. A simple model for transient heat conduction in an infinite cylinder with convective boundary conditions10.1115/1.3082428 ↗
60. Transient heat transfer models of wellbore and formation systems during the drilling process under well kick conditions in the bottom-hole10.1016/j.applthermaleng.2015.09.110 ↗
61. Lian, W., Jiang, Y., Chen, H., Li, Y., and Liu, X. (2022). Heat Transfer Characteristics of an Aeroengine Turbine Casing Based on CFD and the Surrogate Model. Energies, 15.10.3390/en15186743 ↗