Examination of the failure kinetics of polymethyl methacrylate-paraffin adhesion joint

1989 ◽  
Vol 25 (1) ◽  
pp. 70-72
Author(s):  
L. S. Bryukhanova ◽  
I. V. Petrova ◽  
E. D. Shchukin

2019 ◽  
Vol 39 (2) ◽  
pp. 105-116 ◽  
Author(s):  
Hongyan Li ◽  
Yongqiang Fu ◽  
Hongli Liu ◽  
Cong Sun ◽  
Ruyi Li ◽  
...  

AbstractThe thermo-oxidative and thermal degradation kinetic parameters of polymethyl methacrylate-methacryloxyethyltrimethyl ammonium chloride/silica aerogel composites (PMMA-MTC/SA) were investigated in this paper and were compared with the thermal stability and thermal conductivity of different types of composites. As a composite with electrostatic interaction, the thermo-oxidative and thermal degradation activation energies (E) of PMMA-MTC/SA were 173.97 and 188.05 kJ/mol, respectively. The results indicated that the electrostatic interaction could indeed enhance the thermal stability of silica/polymethyl methacrylate composites on the premise of good mechanical properties and heat insulation performance. It is of great significance for the further development of silica-based thermal insulation composites.





1988 ◽  
Vol 30 (6) ◽  
pp. 1295-1300
Author(s):  
V.M. Anisimov ◽  
I.R. Mardaleishvili ◽  
N.I. Zaitseva




Author(s):  
Forest Shih-Sen Chien ◽  
Chun-Rung Huang ◽  
Chi-Yuan Lin ◽  
Kwai-Kong Ng


1972 ◽  
Vol 5 (2) ◽  
pp. 226-231
Author(s):  
B. V. Perov ◽  
E. S. Osikina ◽  
M. M. Gudimov


1977 ◽  
Vol 19 (5) ◽  
pp. 1207-1212 ◽  
Author(s):  
O.N. Karpukhin ◽  
A.V. Kutsenova






Author(s):  
Maryam Khosravinezhad ◽  
Masoumeh Kazemi

In this investigation, polymethyl methacrylate (PMMA) was mixed with cyclic olefin copolymer (COC) because of its hardness, strength, and transparency properties. The results of thermal analysis through TGA and DTG showed that the thermal properties of the alloy are improved using 40% cyclic olefin copolymer. Kinetics of thermal degradation (pyrolysis) of polymers have been studied and analyzed and thermal pyrolysis of polymethyl methacrylate and cyclic olefin copolymer thermoplastic polymer was conducted. The computation of kinetic analysis is measured along with the different methods used to study the kinetics. The activation energy (E) of degradation of studied materials was estimated using Ozawa Flynn and Wall (OFW), Starink and Kissinger’s methods, and evaluation of three kinetic parameters taken appropriate kinetic model in terms of percent change for both types of polymers have been proposed, and finally, simulated curves were compared with the experimental curves. Both mechanisms of degradation for COC and PMMA under nitrogen atmosphere will reflect intramolecular transfer and random scission of the main chain.



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