Barium sulfate filled

By virtue of its high specific gravity, barite (barium sulfate)-filled PBT grades can be used to produce very dense, X-ray opaque, ceramic-like parts [37], Recently, metal-filled PBT resins using copper or tungsten powder have been used to prepare blends with very high specific gravity. 

General discussions of the effect of reinforcing agents on the thermal properties of polymers include glass fiber-reinforced polyethylene terephthalate [28], multiwalled carbon nanotube-reinforced liquid crystalline polymer [29], polysesquioxane [30, 31], polynrethane [31], epoxy resins [32], polyethylene [33], montmorillonite clay-reinforced polypropylene [34], polyethylene [35], polylactic acid [36, 37], calcium carbonate-filled low-density polyethylene [38], and barium sulfate-filled polyethylene [39]. 

Barite [13462-86-7], natural barium sulfate, BaSO, commonly known as barytes, and sometimes as heavy spar, tiU, or cawk, occurs in many geological environments in sedimentary, igneous, and metamorphic rocks. Commercial deposits are of three types vein and cavity filling deposits residual deposits and bedded deposits. Most commercial sources are replacement deposits in limestone, dolomitic sandstone, and shales, or residual deposits caused by differential weathering that result in lumps of barite enclosed in clay. Barite is widely distributed and has minable deposits in many countries. 

Alternative pigments can be used to enhance Ti02 s effectiveness or to replace it. Barium sulfate can serve as an extender or "spacer" in li02-filled materials, separating pigment 1102 particles to optimal distribution so that the pigment... 

Upper G.l. series—In this series, the patient swallows a chalky suspension of barium sulfate (sometimes called a barium meal) which fills the esophagus, stomach, and small intestine so that they may be seen in x-ray photographs. 

The demand for more safety in public buildings, subway stations, computer centers, and so on, has led to acceptance of the FRNC concept for flooring materials. Here EVM elastomers are tested as a basic component. Noise reduction for example, in workshops gave rise to another development noise-deadening sheets and curtains. They are based on EVM elastomers filled with barium sulfate. 

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