The invention discloses a 
polyphenylene oxide / 
polyamide 6 blend 
alloy. The 
polyphenylene oxide / 
polyamide 6 blend 
alloy is prepared from the components in the following parts by weight: 20-80 parts of 
polyphenylene oxide, 10-40 parts of 
polyamide 6, 5-35 parts of compatilizer, 5-15 parts of toughener, 0.2-0.5 parts of 
antioxidant, 0.2-0.7 parts of 
lubricant, and 3-35.5 parts of auxiliaries. The invention further discloses a preparation method for the polyphenylene 
oxide / polyamide 6 blend 
alloy and an application for the polyphenylene 
oxide / polyamide 6 blend alloy as an extruded profile material. The PPO / PA6 (polyphenylene 
oxide / polyamide 6) blend alloy material disclosed by the invention is high in strength, good in 
toughness, excellent in 
corrosion resistance and insulativity, capable of replacing a steel plate or a special 
engineering plastic, thus realizing the purpose of replacing steel by plastic. Moreover, the PPO / PA6 blend alloy material can be popularized to extruded profiles, as well as is good in 
wear resistance, 
heat resistance and dimensional stability, easy to 
machine and form, and capable of being used by replacing the profiles of stainless steel, PEEK (
poly ether ether ketone) and the like in a very 
large range, thus greatly reducing cost.