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Various blends

Various blends of the C,—C, carbon numbers are also available. 1-Butene and 1-hexene are... [Pg.439]

The term ABS was originally used as a general term to describe various blends and copolymers containing acrylonitrile, butadiene and styrene. Prominent among the earliest materials were physical blends of acrylonitrile-styrene copolymers (SAN) (which are glassy) and acrylonitrile-butadiene copolymers (which are rubbery). Such materials are now obsolete but are referred to briefly below, as Type 1 materials, since they do illustrate some basic principles. Today the term ABS usually refers to a product consisting of discrete cross-linked polybutadiene rubber particles that are grafted with SAN and embedded in a SAN matrix. [Pg.442]

Technical data sheets , Malaysian Rubber Producers Research Association, Ttin Abdul Razak Laboratory, Brickendonbury, Herts. SG13 8NL (1995). Data sheets for various blends of natural rubber. [Pg.601]

Polymeric blends are popularly known to show desired properties based on the components. But their nanocomposites have been prepared to further modify the properties. Various blends like NR-ENR and PP-EPDM [188,189] with nanofillers have also been smdied. [Pg.47]

Pandey et al. have used ultrasonic velocity measurement to study compatibility of EPDM and acrylonitrile-butadiene rubber (NBR) blends at various blend ratios and in the presence of compa-tibilizers, namely chloro-sulfonated polyethylene (CSM) and chlorinated polyethylene (CM) [22]. They used an ultrasonic interferometer to measure sound velocity in solutions of the mbbers and then-blends. A plot of ultrasonic velocity versus composition of the blends is given in Eigure 11.1. Whereas the solution of the neat blends exhibits a wavy curve (with rise and fall), the curves for blends with compatibihzers (CSM and CM) are hnear. They resemble the curves for free energy change versus composition, where sinusoidal curves in the middle represent immiscibility and upper and lower curves stand for miscibihty. Similar curves are obtained for solutions containing 2 and 5 wt% of the blends. These results were confirmed by measurements with atomic force microscopy (AEM) and dynamic mechanical analysis as shown in Eigures 11.2 and 11.3. Substantial earher work on binary and ternary blends, particularly using EPDM and nitrile mbber, has been reported. [Pg.302]

The investigators studied various blends of the three polymers in order to control the rate of chain scission and thus influence the induction period and onset of drug release. None of the blends provided the desired 1-week zero-order kinetics. However, blends of different microsphere types did show promise in vitro (88). [Pg.20]

Processes devised to make cotton hydrophobic are summarised in Table 10.42. These processes are undoubtedly successful in conferring substantivity for disperse dyes but attaining compatibility within a range of dyes across the entire colour gamut and on fibre blends of various blend ratios could be a problem. In addition, ester bonds can be saponified... [Pg.212]

Various blend ratios of polycarbonate and PBT polyester were flame retarded with the three flame retardants. These data are shown graphically in Figure 3. Brominated phosphate is the most efficient and brominated polycarbonate the least efficient flame retardant. At a 50/50 ratio of polycarbonate/PBT, brominated phosphate is significantly more effective than brominated polystyrene. [Pg.261]

Derived from spray data for kerosene, gas oil, various blends of gas oil and residual fuel oil with nozzle of Bryan et al. [464] using lightscattering technique No effect of nozzle dimensions Less effect of ALR... [Pg.266]

PER) was modified in several respects. The diets were calculated on a 10 percent protein level rather than on an isonitrogenous basis. This was done because the nitrogen factors of the various blend components varied appreciably from the 6.25 nitrogen factor assumed in the AOAC procedure. A composite nitrogen factor for each blend was calculated from analytical results by dividing the total amino acid content by the nitrogen content. In this manner,... [Pg.145]

Although the relationship of PBT with water sounds complicated (and it is), PBT and its various blends have been used successfully for over 25 years in many different applications. In general, the hydrolysis of PBT is not a major concern. In some specific applications, however, it is critical. In all cases where PBT will see extensive moisture above its Tg, part testing under realistic water exposure conditions is needed to ensure adequate performance. [Pg.316]

CMP slurries are shipped to user sites in ready-to-use strength or as a concentrate, which must be diluted to use strength or mixed with one or more chemicals to create the final CMP polishing slurry. Examples of widely used oxide and tungsten polishing slurries, which require various blending ratios, are listed in Table IV. [Pg.54]

Another key factor determining the emission levels is the bulk equivalence ratio ((l>) in the furnace, a parameter that describes the relative amounts of fuel and air. Levendis and co-workers (1996, 1998fo) have shown that for both coal and tyre (and for various blends thereof) the specific emissions, that is, the mass of a certain pollutant relative to the mass of fuel burned, vary systematically when the combustion environment changes from fuel-lean (low ) to fuel-rich (high results document that, at a given temperature,... [Pg.490]

Fig. 23. Hydrodynamic radius distributions f(R ) for STVPh-9 and STVPh-9/PEMA with various blend compositions in toluene. The measuring conditions are the same as in Fig. 22 [147]... Fig. 23. Hydrodynamic radius distributions f(R ) for STVPh-9 and STVPh-9/PEMA with various blend compositions in toluene. The measuring conditions are the same as in Fig. 22 [147]...
Various blends of functionally active rubbers are reported to be capable of partial crosslinking at high temperatures in the absence of any curatives. Some of these... [Pg.143]

F-BDAF Tg for various blend compositions, see Fig. 14. The microphase-separated morphology further manifests itself in the self-adhesion behavior of polyimide films derived from such mixtures. For mixture containing at least 25 wt% of the flexible component, peel tests of polyimide bilayer samples prepared by solution casting, bulk failure of the test specimens was observed. Since the flexible component contained fluorine, the samples could be examined by X-ray photoelectron spectroscopy to determine the surface composition. At only 10% loading, the flexible component comprised 100% of the top 75 A of the sample. The surface segregation of the flexible component is believed to be responsible for the adhesion improvements. [Pg.158]

Various blends, composites and block copolymers containing the isobutene moiety have been synthesized. The interest in these compounds originates from possible applications in advanced technologies. Polymers of these types are summarized in Table 6.3. [Pg.158]

The composition of the various blends and the data resulting from the pyrolysis of the blends appear in Table II. Sulfur volatilization by fragmentation is not directly related to the volatile matter of the blend as was true with model compounds. For the same model compound (Ciba Orange R) in the various blends this factor is considered constant and has been neglected. [Pg.686]

PORCELAIN ENAMEL. A substantially vitreous inorganic coating bonded to metal by fusion above 426 C (ASTM), Composed of various blends of low-sodium frit, clay, feldspar, and other silicates ground in a ball mill and sprayed onto a metal surface (steel, iron, or aluminum), to which it bonds firmly after firing, giving a glasslike fire-polished surface. [Pg.1358]

Metal specimens coated with the various blends were immersed in water in an accelerated test to determine the effect of high humidity. Cellulose acetate butyrate blends containing carboxylated polyesters prepared with hexahydroterephthalic acid [H(NPG), T50H(NPG)] were particularly susceptible to moisture and failed the adhesion test after immersion for only 0.5 hour similar blends containing T50I(NPG) extended with dianhydride Via or with PMDA passed the adhesion test after immersion for 16 hours. When coatings on cold-rolled steel of cellulose acetate butyrate (EAB-381-0.5) blends containing 1% of each of the... [Pg.579]

Particulate Emissions from Blend Tests. The stack particulate emissions for the baseline and three blend ratios were measured. The effect of blend ratios on the particulate emission rate is shown graphically in Figure 1. In this representation the percent increase of the particulate emission rate over the baseline value for the various blend ratios is plotted for the two higher engine loads at 110° F AMT. [Pg.133]

The CHC profile of most drosophilids includes from 15 to over 30 peaks, depending upon the species, sex, strain, and age. To investigate the role of the minor peaks in courtship, D. melanogaster males were stimulated with a large number of live immobilized target flies that produced various blends of CHCs and their behavior was observed (Ferveur and Sureau, 1996 see Figure 15.1). [Pg.330]


See other pages where Various blends is mentioned: [Pg.410]    [Pg.439]    [Pg.473]    [Pg.681]    [Pg.386]    [Pg.48]    [Pg.349]    [Pg.116]    [Pg.303]    [Pg.309]    [Pg.181]    [Pg.184]    [Pg.213]    [Pg.179]    [Pg.207]    [Pg.43]    [Pg.235]    [Pg.122]    [Pg.149]    [Pg.466]    [Pg.220]    [Pg.410]    [Pg.159]    [Pg.62]    [Pg.131]    [Pg.133]    [Pg.688]   
See also in sourсe #XX -- [ Pg.135 , Pg.136 , Pg.137 , Pg.138 , Pg.139 , Pg.140 ]




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