Thermal-mechanical properties

Ogata, N., Jimenez, G., Kawai, H. and Ogihara, T. 1997. Structure and thermal/mechanical properties of poly(Llactide)- clay blend. Journal of Polymer Science, Part B Polymer Physics 35 389-396. 

Previous BCB/BMI resin studies have demonstrated that the addition of 40X to 60X BCB to a BMI results in a resin with thermal stability dramatically improved over that of the BMI itself The 1 1 siolar ratio BCB/BMI system used in this study has exhibited the retention of thermal mechanical properties at elevated tesiperatures as well. 

This study was therefore undertaken to prepare and evaluate acrylonitrile—butadiene-styrene (ABS) and methyl methacrylate-butadiene-styrene (MBS) polymers under similar conditions to determine whether replacement of acrylonitrile by methyl methacrylate could improve color stability during ultraviolet light aging, without detracting seriously from the good mechanical and thermal-mechanical properties of conventional ABS plastics. For purposes of control, the study also included briefer evaluation of commercial ABS, MBS, and acrylonitrile-butyl acrylate-styrene plastics. 

Materials science applications have driven a vigorous search for new organometallic compounds, both molecular3 and polymeric,4 as precursors for new materials. In the case of polymers, this interest is driven by two different end applications. The first is the intrinsic properties of the materials, such as their electronic, photonic, or thermal/mechanical properties. The second is their use as precursors to purely inorganic materials. Organometallic polymers are particularly attractive precursors because of the inherent ease and versatility that they exhibit with regard to processing. 

If the properties of carbon-carbon composites are in part determined by the properties of the matrix, then altering the matrix and observing the resulting changes in the composited thermal-mechanical properties would be important for understanding the behavior of C-C composites. A first step toward this goal is... 

Table VI. Effect of Bisphenol A Concentration on Thermal—Mechanical Properties"...

The thermal-mechanical properties and toughness data on this system are described in Table VII. From the data it can be seen that in the bisphenol A modified system there is no loss in thermal (HDT) or mechanical properties. In addition there is a further improvement in... 

Table VII. Thermal—Mechanical Properties of Bisphenol A Modified CTBN—Epoxy System...

Fehringer, G. et al.. Proton-conducting ceramics as electrode/electrolyte materials for SOFCs preparation, mechanical and thermal-mechanical properties of thermal sprayed coatings, material combination and stacks, J. Eur. Ceram. Soc., 24, 705-715 (2004). 

Incorporation of monofunctional epoxy POSS into an amine-cured epoxy network increased and broadened the Tg without changing the crosslink density and enhanced the thermal properties. Additionally, it was found that the thermal and thermal-mechanical properties of resultant styrene-POSS vinylester resin nanocomposites were dependent on the percentage of POSS incorporated into the resin [171]. Over a range of POSS incorporations, the Tg of the copolymers changed very little, but the flexural modulus increased with increasing POSS content. 

Chiellini, E. Cinelli, P. Corti, A. Kenawy, E.R. Composite films based on waste gelatin Thermal-mechanical properties and biodegradation testing. Polym. Degrad. Stab. 2001, 73, 549 - 555. 

Classical thermodynamics deals with macroscopic thermal-mechanical properties and their relationships for massive assemblages of atoms or molecules (i.e., 10 fundamental particles) in terms of energy conversion and transformation. Studies of phase/chemical changes and equilibria involving nanoparticles are important areas where the classical thermodynamic approach is effective. Because quantum mechanical effects may be marked (e g., the energy of a nanoparticle may not be continuous) where there are only several hundred (or even only tens) of atoms in a nanoparticle, one may ask, Is classical thermodynamics still valid for nanoparticle systems ... 

In each instance of nitrile elastomer modification - whether rubber is added to the epoxy portion or to the hardener portion -the level of rubber largely determines whether a toughened or a flexibilized epoxy results. The former is characterized by little loss in thermal/mechanical properties. The latter shows a dominant influence of the added rubber. 

Chen, J. -S., Pohks, M. D., Ober, C. K., Zhang, Y., Wiesner, U., and Giannelis, E., Study of the interlayer expansion mechanism and thermal-mechanical properties of surface-initiated epoxy nanocomposites. Polymer, 43, 4895-4904 (2002). 

Many efforts have been devoted to the microcapsules with tailored structure and the fabrication methods thereof. Examples like double-shell microcapsule of polyurea/polyurethane show improved thermal mechanical property and ethanol resistance, poly(acrylonitrile-divinylbenzene-styrene)/polyamide two-layer microcapsule was prepared to encapsulate water, and self-bursting microcapsules " may have potential application in agricultural field because of its unique release profile. Additionally, monodispersed microcapsules based on miCTofludic processes like SPG (Shirasu... 

Avella, M., Rota, G., Martuscelli, E., Raimo, M., Sadocco, P. Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) and wheat straw fibre composites thermal, mechanical properties and biodegradation behaviour. J. Mater. Sci. 35, 829-836 (2000)... 

Kolesov, I. S., and Radusch, H. J. 2008. Multiple shape-memory behavior and thermal-mechanical properties of peroxide cross-Unked blends of Unear and short-chain branched polyethylenes. eXPRESS Polymer Letters 2 461—473. 

Wan Wang, L., Wang, K., Chen, L., Zhang, Y.-W., He, C.-B. Preparation, morphology and thermal/ mechanical properties of epoxy/nanoclay composite. Composites Part A - Appl. Sci. Manufacturing 37 (2006) 1890-1896. 

IMPROVING THE THERMAL-MECHANICAL PROPERTIES OF SZS-111 LIGHT FILTERS BY LIQUID. 

IMPROVING THE THERMAL-MECHANICAL PROPERTIES OF SZS-111 LIGHT FILTERS BY LIQUID. //ENGLISH TRANSLATION OF STEKLO I KERAMIKA 24 /8/15-18. 

Lua, ). and O Brien, J. (2003) Fire simulation of woven fabric composites with temperatures and mass dependent thermal-mechanical properties. 3rd International Conference on Composites in Fire, Newcastle upon Tyne, UK, 2003. 

It has been reported that the addition of zinc into Ni-P matrix has a remarkable influence on its microstructure, mechanical and electrochemical properties [25],In the present study, novel Ni-B-Zn ternary alloy coatings have been synthesized through conventional electrodeposition process. A comparison of properties of Ni-B and Ni-B-Zn coatings in their as deposited state has been presented to elucidate the role of zinc addition on structural, thermal, mechanical properties. A significant improvement in the mechanical properties has been noticed due to solid solution strengthening of Ni-B matrix. 

One approach to addition of elastomeric tougheners is to select a modifier which is initially soluble in the resin (22) but precipitates as small rubbery spheres as curing progresses. However, this procedure has always resulted in depression of thermal mechanical properties. Alternatively, an immiscible material can be dispersed in the resin by use of physical and chemical interactions of the solvents and catalysts so that a fine dispersion of rubber particles is produced in the epoxy resin prior to cure. It is also possible to produce a stable dispersion by a reactive blending process without the use of a catalyst or solvents. 

F.-C. Chiu, and I.-N. Huang, Phase morphology and enhanced thermal/ mechanical properties of polyamide 46/graphene oxide nanocomposites. Polymer Testing, 31 (7), 953-962,2012. 

Y. (2006) Synthesis of branched poly(lactide) using polyglycidol and thermal, mechanical properties of its solution-cast film. Polymer, 47, 429 -434. 

Li, K., Wang, K., Zhan, M., Xu, W. The change of thermal-mechanical properties and chemical structure of ambient cured DGEBA/TEPA under accelerated thermo-oxidative aging. Polym. Degrad. Stab. 98, 2340-2346 (2013)... 

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