Low-pass filler

Fig. 20 A pair of high-pa. is ami low-pass fillers with sigmoidal cut-off, representation in the frequency domain deft) and time domain (right).

FIGURE 2-12 (a) Frequency response of high-pass and low-pass fillers, (b) Bode diagram for lugh-pass and low-pass fitters. For the high-pass filler, fi in kf and C ll.l fxK For the low-pass filler. R I MU and ( I tf. 

What type of noise is likely to be reduced by (a) a high-pass filter and (b) a low-pass filler. ... 

FIGURE 11-8 Quadfupole acts as (a) a high-pass mass filler in the ii plane, (b) a low-pass mass filter in the yr plane, and (c) a narrow-band filter when high-pass and low-pass filters are both in operation. (Reprinted with permission from P. E. Miller and M. B. Denton. J. Chem. Educ., 1986. 63.619. Figures 6. 7. and 8. Copyright 1986 Journal of Chemical Education.)... 

The non-retained fillers end up in the whitewater that is returned to the paper machine. In the short circulation loop, these fillers can flocculate and later can become incorporated as aggregates in the sheet. To avoid this, one must operate the paper machine at a very high first pass filler retention, so that few fillers end up in the whitewater. If one wants a high level of filler loading in the sheet, filler aggregation is desirable and one can operate the paper machine with a low first pass filler retention, giving fillers with transferred polymer time to flocculate in the short circulation loop. 

From the reaclor coil, the solution passes into a (low-through photometer equipped with a 480-nm interference filler,... 

The bitumen and filler mixture, which contains 50 0.5 g of low-viscosity bitumen solution (50/70 bitumen and kerosene) and 10 0.1 g of filler passing through the 0.125 mm sieve, is stirred with hot water at 60°C 1°C for 300 5 s and left to rest for 300 5 s. The water is then emptied into a conical flask and stirred again for a further 300 5 s. 

Ammonium polyphosphate and red phosphoms are excellent flame retardants for all types of thermoset resins. In most cases the combination of a phosphoms-based FR with ATH passes high levels of flame retardancy at relatively low filler loadings -50-70 phr compared to 150-250 phr using ATH alone. The low filler levels reduce the viscosity of the formulations and also the laminate density. 

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