In this study, several polyolefins, including different grades of polypropylene (PP), high-density polyethylene, linear low-density polyethylene, and low-density polyethylene, were tested by thermogravimetric analysis (TGA), and the relationships of their melt flow index (MFI) and melt flow ratio (...
4.4 The ?ow rate of a material may be measured under any of the conditions listed for it in 8.2. Additional characterization of a material can be obtained if more than one condition is used. In case two conditions are employed, a Flow Rate Ratio (FRR) may be obtained by dividing the ...
The second weak link is emerging market (EM) economies with a heavy burden of foreign currency-denominated external debt. By the end of last year, the median of EM economies' ratio of outstanding external debt to exports had risen to 160 percent from 100 percent in 2008. Fluctuations in for...
wherein the polyethylene composition has a melt flow rate MFR5 from 0.10 to 0.25 g/10min; and a melt flow rate ratio, FRR21/5, from 30 to 42;... Q Dou,V Sumerin,E Pomakhina,... 被引量: 0发表: 2022年 Polymer Compositions and Nonwoven Compositions Prepared Therefrom The polymer co...
The Dunn index (DI) is a function of the ratio of the minimum cluster separation to the maximum cluster, implying that the larger the Dunn index the more compact and well separated. High values of DI identify sets of clusters that are compact, with a small variance between members of the...
More importantly, successful samples can extend to other metal-carboxylate frameworks such as ZW-DUT-5 bearing the mixed linkers BPDC-MIMS/BPDC (4:1 molar ratio), a zwitterion (MIMS) modified isostructure of DUT-5 (Td = 450 °C)48, and ZW-UiO-68. ZW-DUT-5·MSA (Tm ~ ...
volume method is then used to establish the flow model of a coat hanger die. In addition, a Taguchi method was coordinated to establish a software for the analysis and optimal design of a coat-hanger die for the foam extrusion which requires a high foaming ratio with a physical blowing ...
Mantle strain‐induced anisotropic permeability variations can explain the focussing of melt towards the ridge axis if the ratio of the directional anisotropic permeabilities is as small as 3. Furthermore, mantle strain‐induced anisotropy in rock permeability may be an important mechanism shaping melt ...
To calculate temperature from the measured intensity ratio the combined efficiency of the optical path, filters and signal detector must be known at the two wavelengths (values of A1 and A2 in Eq. (2)). To achieve this a stabilised tungsten-halogen light source (Thorlabs SLS201L) with a kn...
rather than a multi-year excess melt. This implies that the frequency of extreme melt seasons relative to the rate at which the long-term melt to accumulation ratio allows new pore space and cold content to regenerate above the most recent melt layer36can alter the water storage capacity of ...