Melamine foam

Melamine foam is a foam-like material consisting of a melamine-formaldehyde condensate. It is the active component of a number of abrasive cleaner sponges, notably the Magic Eraser.

A "Mr. Clean Magic Eraser" brand sponge, made from melamine foam

It is used as thermal insulation and as a soundproofing material.

PropertiesEdit

The open-cell foam is microporous and its polymeric substance is very hard, so that when used for cleaning it works like extremely fine sandpaper, getting into tiny grooves and pits in the object being cleaned. On a larger scale, the material feels soft because the reticulated foam bubbles interconnect. Its structure is a 3D network of very hard strands, when compared to the array of separate bubbles in a material such as styrofoam.[1]

CleaningEdit

In the early 21st century, it was discovered that melamine foam is an effective abrasive cleaner.[2] Rubbing with a slightly moistened foam may remove otherwise "uncleanable" external markings from surfaces. For example, melamine foam can remove crayon, marker pen, and grease from painted walls and wood finishings, plastic-adhering paints from treated wooden tables, and adhesive residue and grime from hubcaps.[3] If the surface being cleaned is not sufficiently hard, it may be finely scratched by the melamine material. Similarly to a pencil eraser, the foam wears away during use, leaving behind a slight residue which can be rinsed off.

Other usesEdit

It is also used as insulation for pipes and ductwork, and as a soundproofing material for studios, sound stages, auditoriums, and the like. The low smoke and flame properties of melamine foam prevent it from being a fire hazard.[4][better source needed] It is also used as the main sound and thermal insulation material for bullet trains, due to its high sound absorption, excellent thermal insulation performance and light weight.[citation needed]

See alsoEdit

ReferencesEdit

  1. ^ "HowStuffWorks "Melamine Foam"". Retrieved 13 May 2012.
  2. ^ US 20060005338, Gary Ashe, Alan Goldstein, "Cleaning Implement Comprising A Layer Of Melamine Foam", published 12 January 2006, assigned to Procter and Gamble Co. 
  3. ^ "Mr. Clean Magic Erasers: Creative Uses For These Household Cleaning Blocks That Truly Work Magic! - The Fun Times Guide to Household Tips". Retrieved 13 May 2012.
  4. ^ "Melamine Foam Featured Properties". Retrieved 13 May 2012.[better source needed]

External linksEdit