The High Melt Strength PP Foam Presentation

In European and other developed countries, the annual consumption of polymer-based foam accounts for about 10% of the total polymer consumption and 20% annual growth rate. Polymer foam material with low density, high strength, good thermal insulation and energy-saving advantages. Application of polymer foam material from buildings, cars to a variety of household goods, to food packaging and other fields, and our lives.

201507281714593655

A polypropylene foam material late comer.

 

In the past 50 year, polymer-based foam market is mainly composed of amorphous polymer, such as polyurethane (PU), polystyrene (PS), polyvinyl chloride (PVC) and other leading. Polypropylene is a late comer polymer foam materials market, mainly by microscopic molecular structure determined by liner semi-crystalline structure of the polymer melt foaming process in lack of access to a uniform, controlled bubble pore structure should stretch rheological properties.

polyproperlyne-foam_150806

In order to solve the PP foam problem, melt strength of PP must be improved.

 

As shown above, the high melt strength PP application areas are disposable fast-food, automotive components, such as damping door panels, sun visors, tool boxes insulation panels.

 

Second, the four methods of preparation of high melt strength polypropylene.

polyproplyne-pellets_150806

At present, there are the following four methods, namely the use of high melt strength PP, PP partially crosslinked, PP blend modified and PP inorganic composite material.