Expanded polystyrene, commonly used in coffee cups, coolers and packaging, will dissolve if it comes in contact with most vegetable oils, including biobased phase change material. The phenomenon is proving effective as a “green” solution to reducing EPS waste. But it demonstrates that care must be taken in both the containment and shipment of organic phase change material.
A thermal cycling study is designed to determine the cycling stability of a phase change material. During the study, a PCM goes through 10,000 or more cycles as quickly as possible to see if any thermal or chemical degradation is observed. The results help determine the useful lifetime of a PCM and its suitability for various applications.
23 PureTemp phase change materials, with temperature ranges from 23 to 154 degrees Fahrenheit, are now designated as 100 percent biobased.
Biobased PureTemp belongs to the only category of phase change materials that are considered to be readily biodegradable. PureTemp PCMs will fully decompose within months of being introduced into a landfill and will not produce long-term negative impacts on the environment.
Flash point plays an important role in the safe handling of chemicals. Although PureTemp and paraffin PCMs have similar melting points, the higher molecular weight of PureTemp compounds makes them less volatile, thereby requiring a significantly higher temperature to generate an ignitable organic vapor and air mixture.