scholarly journals Sensitivity analysis of Polymer Laboratories' dynamic mechanical thermal analyzer

1988 ◽  
Vol 84 (S1) ◽  
pp. S194-S194 ◽  
Author(s):  
R. J. Deigan ◽  
J. J. Dlubac
Keyword(s):  
Sensitivity Analysis ◽  
Dynamic Mechanical ◽  
Dynamic Mechanical Thermal Analyzer ◽  
Thermal Analyzer

Role of Epoxidized Natural Rubber in Dynamic Mechanical Properties of NR/ENR/silica Composites

2011 ◽  
Vol 415-417 ◽  
pp. 415-419
Author(s):  
Yue Qiong Wang ◽  
Qing Huang Wang ◽  
Yong Yue Luo ◽  
Jie Ping Zhong ◽  
Yong Zhen Li ◽  
...  
Keyword(s):  
Fatigue Test ◽  
Dynamic Properties ◽  
Dynamic Mechanical Properties ◽  
Test Results ◽  
Dynamic Mechanical ◽  
Dynamic Mechanical Thermal Analyzer ◽  
Thermal Analyzer ◽  
Self Aggregation ◽  
Temperature Dynamic

NR/ENR/silica composites with different ENR amount were prepared in an open two-roll laboratory mixing mill at room temperature. Dynamic properties of ENR filled NR/silica were performed by dynamic mechanical thermal analyzer (DMA) and compression fatigue analyzer. DMA and compression fatigue test results showed that the effect of ENR on dynamic properties of NR/silica was significant. DMA displayed the tanδ of NR/ENR/silica composites at 0 °C was increased with increasing ENR amount. Compression fatigue test indicated the presence of ENR decreased the heat produced during compression test and the heat build-up is the least when NR to ENR ratio is 80 to 20. Scanning electron microscopy was used to investigate the morphology of NR/silica filled with ENR. It is found that silica self-aggregation was improved in the presence of ENR and sea-island structure was formed in NR/silica when 30phr ENR added, which maybe the reason of decrement of heat produced during compression.

scholarly journals SIFAT DINAMIK MEKANIKAL VULKANISAT KARET ALAM-ORGANOCLAY

2013 ◽  
Vol 31 (1) ◽  
pp. 45
Author(s):  
Muhammad Irfan Faturrohman ◽  
Bambang Soegijono ◽  
Emil Budianto ◽  
Koji Yoneda
Keyword(s):  
Storage Modulus ◽  
Dynamic Mechanical ◽  
Dynamic Mechanical Thermal Analyzer ◽  
Thermal Analyzer

Sifat dinamik dan swelling vulkanisat karet alam (NR) yang mengandung bahan pengisi organoclay dengan basal spasi yang berbeda telah dipelajari. Vulkanisat NR/organoclay dibuat dengan menggunakan metode pelelehan kompon di dalam gilingan terbuka. Sifat dinamik diukur dengan menggunakan Dynamic Mechanical Thermal Analyzer (DMTA). Hasil penelitian menunjukkan bahwa penambahan organoclay dengan basal spasi lebih besar (15A) menghasilkan struktur interkalasi/eksfoliasi di dalam matrik karet alam sehingga sifat dinamik mekanikal dan swelling menjadi lebih baik. Storage modulus di bawah Tg dan di atas Tg meningkat dengan peningkatan basal spasi organoclay. Adanya organoclay juga menyebabkan penurunan tan d dan Tg vulkanisat, terutama organoclay 15A. Organoclay 15A di dalam vulkanisat karet alam dapat menurunkan nilai swelling dan koefisien difusi, sorptivitas serta permeabilitas. Derajat ikatan silang dari NR/organoclay 15A sedikit lebih besar dan memperbaiki sifat elastis vulkanisat.    Diterima : 7 Januari 2013; Disetujui : 24 April 2013How to Cite : Faturrohman, M., Soegijono, B., Budianto, E., & Yoneda, K. (2013). Sifat Dinamik Mekanikal Vulkanisat Karet Alam-Organoclay. Jurnal Penelitian Karet, 31(1), 45-53. Retrieved from http://ejournal.puslitkaret.co.id/index.php/jpk/article/view/132

scholarly journals STUDIES OF MONOMER IMPREGNATION AND POLYMERIZED “IN-SITU” IN WOOD USING DYNAMIC MECHANICAL THERMAL ANALYZER (DMTA)

2017 ◽  
Vol 25 (1) ◽  
pp. 137-147
Author(s):  
S. Hamdan ◽  
Y.L. Liew ◽  
Z.A. Talib
Keyword(s):  
Thermal Analysis ◽  
Treated Wood ◽  
Acacia Mangium ◽  
Untreated Wood ◽  
Viscoelastic Relaxation ◽  
Dynamic Mechanical ◽  
Dynamic Mechanical Thermal Analyzer ◽  
Thermal Analyzer ◽  
The Mean

Some tropical hardwoods (acacia mangium, madhuca utilis, dacrydium spp., dipterocarpus spp.,dyera costulata, shorea spp., shorea gibbosa, shorea macrophylla, endospermum diadenum, cratoxylum arborescens) are selected and impregnated with methyl methacrylate (MMA) and polymerized “in-situ” by using catalyst-heat technique. Treatability of the wood as determinedfrom the fractional volumetric retentions of monomer i.e. fraction of voids filled by the impregnant showed that the mean retention range from 15.03% (acacia mangium) to 56.59% (cratoxylum arborescens). The penetration of monomer evaluated using ultrasonic wave showed that the treated wood had higher velocities which indicate significant increase in density. This paper deals with the viscoelastic relaxation of polymerized treated wood. The efficiency of monomer as a plasticizer is studied through the temperature dependence of the storage modulus (E´) and loss tangent (tan d) of treated and untreated wood by dynamic mechanical thermal analysis (DMTA) over a temperature of -100 to 200ºC. E´ decrease with temperature, and as the maximum mechanical damping develop, the glass transition temperature (Tg) of plasticized wood decrease with the plasticizer content.   

scholarly journals SIFAT DINAMIK MEKANIKAL VULKANISAT KARET ALAM-ORGANOCLAY

2013 ◽  
pp. 45-53
Author(s):  
Muhammad Irfan Faturrohman ◽  
Bambang Soegijono ◽  
Emil Budianto ◽  
Koji Yoneda
Keyword(s):  
Storage Modulus ◽  
Dynamic Mechanical ◽  
Dynamic Mechanical Thermal Analyzer ◽  
Thermal Analyzer

Sifat dinamik dan swelling vulkanisat karet alam (NR) yang mengandung bahan pengisi organoclay dengan basal spasi yang berbeda telah dipelajari. Vulkanisat NR/organoclay dibuat dengan menggunakan metode pelelehan kompon di dalam gilingan terbuka. Sifat dinamik diukur dengan menggunakan Dynamic Mechanical Thermal Analyzer (DMTA). Hasil penelitian menunjukkan bahwa penambahan organoclay dengan basal spasi lebih besar (15A) menghasilkan struktur interkalasi/eksfoliasi di dalam matrik karet alam sehingga sifat dinamik mekanikal dan swelling menjadi lebih baik. Storage modulus di bawah Tg dan di atas Tg meningkat dengan peningkatan basal spasi organoclay. Adanya organoclay juga menyebabkan penurunan tan d dan Tg vulkanisat, terutama organoclay 15A. Organoclay 15A di dalam vulkanisat karet alam dapat menurunkan nilai swelling dan koefisien difusi, sorptivitas serta permeabilitas. Derajat ikatan silang dari NR/organoclay 15A sedikit lebih besar dan memperbaiki sifat elastis vulkanisat.    Diterima : 7 Januari 2013; Disetujui : 24 April 2013How to Cite : Faturrohman, M., Soegijono, B., Budianto, E., & Yoneda, K. (2013). Sifat Dinamik Mekanikal Vulkanisat Karet Alam-Organoclay. Jurnal Penelitian Karet, 31(1), 45-53. Retrieved from http://ejournal.puslitkaret.co.id/index.php/jpk/article/view/132

Sign in / Sign up

Export Citation Format

Share Document