The polymers were produced by melt polycondensation, which yielded materials of weight-average molecular weights in the range of 30,000 35,000 g/mol.
The polymer was prepared by melt polycondensation, which yielded materials of molecular weight about 15,000 g/mol.
Considering that the trend is to increase the combustion pressure, new materials of lower weight, harder, wear and corrosion resistant, and compatible with the fuel environment, are needed.
The blast-resistant structures, such as blast door panels, are traditionally designed and fabricated with solid materials of huge weight to resist blast or high velocity impact loads.
In this research, three optimization problems including minimization of the mean compliance considering a certain amount of material, minimization of weight with avoiding local stress concentration as well as minimization of weight and strain energy under local stress constraints are dealt with.
This would open a path toward the fabrication of microwave absorption materials of light-weight.
The other peaks can be associated with humic substances, HS (Peak B), building blocks (Peak C) which represent HS-like materials of lower molecular weight, and low molecular weight acids (Peak D) (Huber et al. 2011; Lai et al. 2015).
Super-plasticizer was also used in the mixtures at the ratio of 1.4 1.1 % of binder materials by weight for providing the desired fluidity of the SCC.
Effective efforts have been made from past decades to design a substitute for existing metallic materials, in terms of weight, better performance, and cost effectiveness, by fabricating promising multifunctional hybrid polymer composites and hybrid nanocomposites.
Proper design of system audit logs can also provide admissible material of evidential weight, without the requirement for forensic treatment.
Aggregate accounts for more than half of construction materials by weight, and for every new home an average of 60 tons is required.
