aIn contrast to the strength, the flexural modulus of the composites increases gradually with the amount of reinforcement and reaches a saturation value of around 6 GPa with 20–35 % MWCNTs. 与力量对比,综合的flexural模数逐渐增加以相当数量增强并且到达饱和值为大约6 GPa与20- 35% MWCNTs。[translate...
This could reflect the strength of the non-covalent bonds within the network, but is likely more indicative of the established absence of covalent bonds within zein networks. This again points to the need to strengthen zein networks in order to obtain behaviour more similar to that of muscle ...
tensile strength increases with polymer chain length. Tensile strength • Mechanical behavior of amorphous and semi- crystalline polymers is strongly affected by Tg • In general • Polymers whose Tg is above the service temperature are strong, stiff and sometimes brittle • e.g. Po...
The slope of this curve gradually increases as the temperatures rise and includes peaks which represents the melting effect in a simplified way. The initial particle density was determined as 1840 kg/m33 with a helium pyknometer. The thermal conductivity of the particles was set to a constant ...
The effect of natural fibres was investigated: cotton, sisal, jute, ramie, bamboo, and synthetic fibres: polymer and polypropylene. It was noticed that the fibres change the consistency of the mixture up to 15%. In the composite flexural strength tests, a change in strength by +/− 8% ...
Some publications discuss the properties of EVA (Ethylene vinyl acetate co-polymer)/graphene composites. Modelling of interactions between graphene and EVA matrix using molecular dynamics (MD) shows that the addition of graphene should lead to the increase of the Young's modulus, yield strength, and...
3. The utility model has the advantages of strong impact energy absorption and friction sound attenuation, and low friction noise; 4. The impact strength of plastics is one of the most impact resistant plastics available. The impact strength at room temperature is comparable to that of polycarbona...
When a brain scientist at the University of California, Irvine got pregnant at the age of 38, she saw a rare chance. Neuroscientist Liz Chrastil wanted to see how her brain changed while she was pregnant. 当加州大学欧文分校的一位脑科学家在 38 岁时怀孕时,她看到了一个难得的机会。神经科学...
Effect of polymer concentration and cross-linking density on the microstructure and properties of polyimide aerogels Article Open access 10 May 2024 Synthesis of organic aerogels with tailorable morphology and strength by controlled solvent swelling following Hansen solubility Article Open access 01 Febr...
They reported the samples' mechanical properties by examining the interaction between concrete and simulated polymer chains so that the mechanical and thermodynamic results of this group showed an improvement in mechanical behavior and increased strength of the simulated structure. Hassan et al.14 added ...