The Universal Selection Source: Plastics & Elastomers
A SpecialChem Client is seeking a high-reflection coating to maximize the throughput of emitted light to their transparent polymer (acting as a light guide).
A SpecialChem Client is seeking a solution of filling porous substrate and small gaps to make it watertight. The solution should be waterproof with long-term stability. Due to the ...
A SpecialChem Client is seeking a resin system that is capable of providing “fast” and “slow” curing mechanisms under mild conditions.
The first curing mechanism sets the resin in...
A SpecialChem Client developed a technology allowing recycling and/or purification of metals from solid or liquid mixtures. Thanks to the way it works, the technology can be tailor...
Formulating Natural Sun Care Products
Jun 30, 2015
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Latest High Heat Polymer Resins & Applications Advances
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Some polymers have a natural tendency to absorb water. This leads to changes in dimensions as well as in mechanical and electrical performance. This represents the % weight gain of a plastic specimen due to water absorption after immersion in distilled water during 24 hours at 23°C. Two other testing procedures are possible: Water Absorption at saturation (measurement occurs when the polymer does not absorb water anymore); and Water Absorption at Equilibrium (specimens are exposed to a humid environment -- generally at 50% relative humidity -- at a specified temperature -- 23°C or 73.4°F -- for 24 hours).
Most widely used standards to measure Water Absorption in plastics are ASTM D570 and ISO 62.
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