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Plastics, filler effects

When plastics act as a physical cross-link and strength properties are indirectly related to the modulus of hard phase and morphology of the blend, the filler effect is analyzed by the following equation ... [Pg.138]

Below the outer membrane is a filter, usually composed of an anionic polymer, e.g. based on salicylate. Its precise composition and dimensions (thickness, pore size, amount and type of plasticizer, fillers, etc.) are optimized in order to tailor the diffusion rates of material crossing the filter from the analyte solution toward the working electrode of the sensor. Ideally, some uncharged molecules, such as H2O2, will traverse the filter so fast that, in effect, the filter is invisible to... [Pg.189]

The effect of different levels, shapes and sizes of plastic fillers on PCC properties. [Pg.44]

For the 25 freeze-thaw cycles, it was found that plastic fillers did not change the chloride penetration profile of concrete. More cycles are needed to confirm this result and to explore effects with a larger number of cycles. [Pg.52]

Based on effects of fillers on strength of filled plastics, fillers can be subdivided into just fillers and reinforcing fillers. Fillers, such as wood flour, calcium... [Pg.129]

Thermal expansion-contraction of inorganic fillers is much lower compared with that of plastics. Therefore, the higher the filler content, the lower the coefficient of expansion-contraction of the composite material (see Chapter 10). Many inorganic nonmetallic fillers decrease thermal conductivity of the composite material. For example, compared with thermal conductivity of aluminum (204 W/deg Km) to that of talc is of 0.02, titanium dioxide of 0.065, glass fiber of 1, and calcium carbonate of 2-3. Therefore, nonmetallic mineral fillers are rather thermal insulators than thermal conductors. This property of the fillers effects flowability of filled plastics and plastic-based composite materials in the extruder. [Pg.132]

LINEAR COEFFICIENT OF THERMAL EXPANSION-CONTRACTION FOR WOOD-PLASTIC COMPOSITES. EFFECT OF FILLERS AND COUPLING AGENTS... [Pg.362]

Otaigbe, U.J. O.D. Adams. Bioabsorbable soy protein plastic composites Effect of polyphosphate fillers on water absorbtion and mechanical properties. /. Environ. Polym. Degrad. 1997b, 5, 199-208. [Pg.613]

For many applications, the homopolymer of styrene is too brittle. To overcome that, many different approaches were originally tried. These included use of high molecular weight polymers, use of plasticizers, fillers (glass fiber, wood flour, etc.), deliberate orientation of the polymeric chains, copolymerization and addition of rubbery substances. Effect of plasticizers is too severe for practical use, and use of high molecular weight polymers exhibits only marginal improvement. Use of fillers. [Pg.370]

Katz, H. S. Milewski, J. V. Handbook of Fillers for Plastics, RAPRA, (1987). Mareri, R Bastrole, S. Broda, N. Crespy, A. Mechanical behaviour of polypro-pyl-ene composites containing fine mineral filler Effect of filler surface treatment. Comp. Sci. and Techn., 1998, 58(5), 747. [Pg.354]

Resistance of plastic piaterials to chemically active media may be affected by the presence of additives such as asbestos fibers [8], lubricants [2], or fillers. Effects of fillers depend on their nature and on their content in the plastic material [9-12]. But, in general, the resistance of a plastic to chemically or physically active media depends above all on the chemical composition and the structure of the basic polymer, on the temperature, and on other factors. [Pg.138]

Acetic Acid (cont) 10 26 7 8 No effect Noryl GFN3 GE Plastics Filler 30% Glass fiber... [Pg.603]

No effect Noryl GFN3 GE Plastics Filler Glass fiber... [Pg.604]

Fillers should be added early without plasticizer for effective dispersion. The peroxide and coagent is best incorporated at the end of the mix. [Pg.357]

This law describes an ideal case of steady flow which is strongly influenced by the nature of polymer, crosslinks, plasticizers, fillers, nature of penetrant, and temperature. Figure 7.1.10 shows the effect of polymer crystallinity and temperature on diffusion coefficients of 1-butanol and 1-octanol in poly(ethylene terephthalate). Increase of temperature facilitates diffusion (see also Figure 7.1.1). There is also difference in diffusion between two penetrants studied. Butanol has higher diffusion rate than octanol, which is easy to understand since butanol has smaller molecular volume (see also Figirre 7.1.3). Increase in crystallinity causes decrease of diffusion rate of both solvents. ... [Pg.351]

B. -J. Kim, F. Yao, G. Han, Q. Wang, and Q. Wu, Mechanical and physical properties of core-shell structured wood plastic composites Effect of shells with hybrid mineral and wood fillers. Composites Part B Engineering 45(1), 1040-8 (2013). [Pg.158]

Polymers containing a nanodiamond powder filler find wide nse. Nanodiamond powder fillers are added into polymers to enhance their strength and increase their elasticity modnlns. These effects depend on the natnre of the polymer and filler, their interaction, and on how discrete the filler particles are. The effect of strength increase is the most pronounced at the addition of highly disperse fillers to elastomers. In the case of amorphous plastics, the effect of the elasticity modulus increase predominates. [Pg.37]

Commercially produced elastic materials have a number of additives. Fillers, such as carbon black, increase tensile strength and elasticity by forming weak cross links between chains. This also makes a material stilfer and increases toughness. Plasticizers may be added to soften the material. Determining the effect of additives is generally done experimentally, although mesoscale methods have the potential to simulate this. [Pg.313]

Nacreous Pigments. Mica is used as a substrate for coatings (qv) of various metal oxides to obtain a peadescent effect. Mica coated in this fashion is used as filler and as a coloring agent in certain types of plastics. [Pg.291]

ASTM D883 defines a filler as "...a relatively inert material added to a plastic to modify its strength, permanence, working properties, or other quaHties or to lower costs." EiHers (qv) that modify the properties and characteristics of epoxies are employed in epoxy resins for a variety of reasons. Then principal functions are to control viscosity, reduce shrinkage and the coefficient of thermal expansion, effect a cost reduction, and color the epoxy resins. [Pg.530]


See other pages where Plastics, filler effects is mentioned: [Pg.432]    [Pg.42]    [Pg.47]    [Pg.248]    [Pg.288]    [Pg.253]    [Pg.288]    [Pg.680]    [Pg.553]    [Pg.324]    [Pg.66]    [Pg.251]    [Pg.381]    [Pg.285]    [Pg.369]    [Pg.371]    [Pg.28]    [Pg.269]    [Pg.322]    [Pg.459]   
See also in sourсe #XX -- [ Pg.367 ]




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