奇怪
发表于 2025-3-23 13:07:29
Characterisation of the Moisture Absorption and Thermal Ageing Behaviour of Polymeric Composite Systd application in the manufacture of e.g. boat hulls, high performance motor vehicles, aircraft components and sports goods. Their high specific strength and specific stiffness give them the edge in applications where weight savings are critical, but their long-term durability is often questioned. Th
眨眼
发表于 2025-3-23 17:16:30
Ageing Processes of Nitrocellulose in Plastic Bonded Explosivesexplosives industry. The decomposition kinetics of NC have been investigated by ageing nitrocellulose-containing PBXs at elevated temperatures and monitoring the reduction in NC molecular weight using gel-permeation chromatography (GPC). The kinetics can be described by a first order, random chain s
制造
发表于 2025-3-23 18:28:10
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invulnerable
发表于 2025-3-24 01:07:02
Accelerated Ageing of Pyrotechnics: 16mm Signal Cartridge - Whiteee gunpowder (SFG), a priming composition based on silicon, potassium nitrate and sulphurless mealed gunpowder, and the main pyrotechnic composition which contains magnesium, barium and strontium nitrates, a colour enhancer and a binder..Cartridges from two different lots were subjected to diurnal t
paleolithic
发表于 2025-3-24 02:30:15
Ageing Study of Polyetheretherketone Exposed to Water and Brine by Thermal Analysis and Dielectric Smeasurement, dynamic mechanical thermal analysis (DMTA), differential scanning calorimetry (DSC) and dielectric spectroscopy. It is observed that plasticisation of a crystallite distribution generated in the formation of the sample occurred during the water uptake process. The water and brine sorpti
动脉
发表于 2025-3-24 09:00:03
The Effects of Gamma Radiation Sterilisation on Ultra High Molecular Weight Polyethylenet it is chemically identical to HDPE, the large chain length of UHMWPE confers on it the greatest abrasion resistance of any similar thermoplastic, with other favourable properties such as low coefficient of friction and high impact resistance. As UHMWPE also has good biocompatibility, it is commonl
antedate
发表于 2025-3-24 10:48:42
Ageing Characteristics of Gamma Irradiated Ultra High Molecular Weight Polyethyleneuses both immediate and time dependent chain scission processes to occur, releasing material for further crystal growth, leading to an increase in stiffness and predisposing the surface to wear..C NMR was used to characterise the aliphatic region of UHMWPE on the basis of differences in chemical shi
被诅咒的人
发表于 2025-3-24 18:44:47
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minaret
发表于 2025-3-24 21:10:34
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Accrue
发表于 2025-3-25 00:12:47
https://doi.org/10.1057/9780230514447 different behaviour, suggesting that the dominant effect of elevated temperature testing is to induce minor phase changes in the polymer, thus incrementally reducing the mechanical resilience of the polymer chain to applied stress and yielding results which do not accord with an Arrhenius (or other simple) model.