Tungsten polymers
are being introduced as an effective lead alternative in a variety of
applications for which lead has traditionally been used. This push for
alternatives is due to the threat that lead poses to the environment and
to human health. Recent studies show that the heavy usage and poor
disposal of lead products for decades has caused irreversible effects to
the environment and as such lead is now ranked as the second most
hazardous substance by the United States government. Lead is a heavy
metal and exposure to it can lead to lead poisoning whereby the day to
day operations of human organs are inhibited. Despite these health
risks, lead is very useful in industries today because of the properties
it possesses, such as its malleability and low melting point making it
easy to mold and melt, in addition to its low cost which makes it
economical for use for industrial purposes.
With
the outstanding properties that it has, lead has been used in military,
medical and nuclear industries, to name a few. But the main factor that
contributes to its widespread use today is its low
cost. Lead is very inexpensive because it is an abundant mineral that
is relatively easy to harvest and process. But given newfound
understanding of the health risk associated with lead and the increased
regulatory attention paid to it, there is now a growing demandfor a
composite material with similar properties to lead but that is
environmentally friendly. A material is said to be a composite if it is
made of two or more materials that have different physical and chemical
properties.
Tungsten
polymers have become a notablealternative to lead in numerous
applications because they can match the physical properties of lead,
like high density, while being environmentally benign. This
polymer composite is made up of tungsten powder and a plastic base
resin, which are compounded together into a thermoplastic material at 11
g/cc, the same density as lead. The base resin systems are made up of;
polysulfones (PSU), co-polymides, polyamides (PA), polymethylpentenes
(PMP), polyurethanes (TPU),acryloynitrile butadiene styrene (ABS),
polyethylenes (PE) and polyetheretherketones (PEEK).
Properties of tungsten polymer include:
• A density of 11.0 g/cc
• Improved radiation shielding performance
• Improved flexibility properties
• Easily malleable
• No toxic constituents
• Resistance to corrosion by weather elements
• Resistant to corrosion by chemical and organic solvent resistance
• Insoluble in water
• No harmful effects when handling or processing
• Improved radiation shielding performance
• Improved flexibility properties
• Easily malleable
• No toxic constituents
• Resistance to corrosion by weather elements
• Resistant to corrosion by chemical and organic solvent resistance
• Insoluble in water
• No harmful effects when handling or processing
With these properties, this polymer has found many applications in fields and industries, including:
• In X-ray devices in manufacturing industries and medical x-ray machines
• In nuclear and medical industries, it is used as radiation shielding
• It is also used in weight and balance applications as a counterweight for applications like motors, ballasts, and more.
• Used as a sound proofing material in aviation headphones
• Acts as a damper to reduce shock due to vibration in the automotive industry
• In nuclear and medical industries, it is used as radiation shielding
• It is also used in weight and balance applications as a counterweight for applications like motors, ballasts, and more.
• Used as a sound proofing material in aviation headphones
• Acts as a damper to reduce shock due to vibration in the automotive industry
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