The Chinese name of the PP material is polypropylene, the English name is polypropylene, the former P stands for poly-"multiple, polymerization", and the latter P stands for propylene "propylene". Temperature resistant -20 - 120 degrees, is one of the common microwave plastics. Pp is engineer...
Dry PAA is a white solid. It is capable of absorbing many times its weight in water, and hence is used in disposable diapers. Indiapers it is a fine powder - see picture of material form a diaper. Polyacrylic acid is found in a wide variety of household and personal care products: Dia...
Let’s try again: Poly is derived from the Greek word polu meaning many or much. A mer, derived from another Greek word, meros, and meaning part, is a repeating unit. So, polymer means many parts or many repeating units. A polymer’s chemical structure contains linked, repeating units ...
Rather than disposing of or recycling post-consumer cardboard waste, the material is given an additional life as a cushioning agent. Small cuts are made to produce a concertina-type effect that protects against shocks just like bubble wrap, making it one of the most sust...
Like normal polytetrafluoroethylene, ePTFE is highly heat-resistant and hydrophobic, but it is also easy to shape into a thin, fabric-like material that can be deployed in many more applications than traditional PTFE, which is more rigid. GORE-TEX As its name suggests, GORE-TEX is another...
Polymers are both man-made and naturally occurring. Rubber, for example, is a natural polymeric material that has been used for thousands of years. It has excellent elastic qualities, the result of a molecular polymer chain created by mother nature. Another natural polymer is shellac, a resin ...
Polyester is a category of polymers that contain the ester functional group in every repeat unit of their main chain. As a specific material, it most commonly refers to a type called polyethylene terephthalate (PET). 2 Polyethylene Polyethylene or polythene (abbreviated PE; IUPAC name polyethene ...
Dean McClements is a B.Eng Honors graduate in Mechanical Engineering with over two decades of experience in the manufacturing industry. His professional journey includes significant roles at leading companies such as Caterpillar, Autodesk, Collins Aerospace, and Hyster-Yale, where he developed a deep...
The base material used to make spandex is polyurethane , which was developed in 1937 by IG Farben in Germany. At the end of World War II, hundreds of top German scientists began new careers in the United States, and many of the textile engineers at IG Farben transferred to the DuPont Co...
What Is Polyurethane Foam? While free of toxic flame retardants, upholstered furniture still utilizes toxic materials. Most of the furniture sold to US consumers is made with polyurethane foam (aka “polyfoam” or “PU foam”). This is what you need to know about this material. ...