On Chemical Blowing Agents

uncrosslinked polyethylene foam production with chemical blowing agents

in many processes polymeric foams can be produced by using chemical or physical blowing agents. in this work for polyethylene foam production, the chemical blowing agents and compression moulding process were employed. at first, by using dsc diagram of two polyethylene grades, a suitable polyethylene grade was selected for foam production and then we discuss about blowing agent critical percent...

Chemical blowing agents in the rubber industry. Past – present – and future?

Whether it be foamed aluminium in the A-pillar of a passenger car, Ytong autoclaved aerated concrete, Elastolit PU rigid foam or Semperform EPDM window profile – whatever the class of materials, there will inevitably be foamed versions. Some of these are new while others have been established for decades, and they are used in a wide range of industrial and consumeroriented applications. Defined...

Flexible Foam Manufacturer's Experience in Substituting Cfc Blowing Agents

INTRODUCTION The PU industry is currently flooded with possible solutions to enhance a drastic reduction or even a phase out of CFC usage. The situation compares more and more to a department store in which an abundance of goods leaves the shopper with the problem to make a good choice, which means a good article for an economically acceptable price. The choice for the foamer is more difficult ...

Chemical agents and chemical terrorism.

Chemical terrorism is a new threat to the security of mankind, which scale essentially exceeds the impact of use of the most modem firearms. At present time all over the world threats from different radical elements to use radioactive materials, potent poisonous substances and pathogenic microorganisms for terrorist purposes became more frequent. High-toxic chemical substances can fall in terro...

Chemical Warfare Agents