关键词: 氟代烃, 发泡剂, 分子结构, 氟代烃, 发泡剂, 分子结构

Abstract: Several fluorocarbons have been used as a blowing agent （BA） with short boiling range，high blowing efficiency，good compatibility and chemical stability，where thermal insulation is the main priority. CFCs and HCFCs which belong to the ozone depletion substances destroy stratosphere ozone via photochemical cycles，and HFCs will alter the radiation balance of earth’s atmosphere due to the build up of infrared absorbing. Designation and composition blowing molecules that meet both environment and economy is thus needed. The review starts with a brief introduction on the improvement of molecule structure of fluorocarbons，as well as their synthetic methods. The new generation alternatives characterized as：longer carbon chain，involving C—O or C=C bonds，and containing more fluorine atoms. A large mount of experimental works could be minimized by computational chemistry and structure–property relationship analysis，more effective and economical catalytic fluorination manufacturing process is always favored，and some other features including toxicity，physical property，environment assessment，engineering process are also of fundamental importance.

Key words: Fluorocarbons, Blowing agent, Molecular structure, fluorocarbons, blowing agent, molecular structure