| abstract |
The invention relates to the technical field of engineering plastics, in particular to a polycarbonate/polyester alloy composition resistant to long-term thermal oxygen aging and a preparation method thereof. The polycarbonate/polyester alloy composition comprises the following components: polycarbonate, Polyester, toughener, octadecenoate stabilizer, transesterification inhibitor, antioxidant. By adding an octadecenoate stabilizer and a transesterification inhibitor at the same time, the present invention can passivate the active molecular chain ends of polycarbonate and polyester, inhibit the transesterification reaction of polycarbonate/polyester alloy and slow down its thermal oxidation. aging, so that the prepared polycarbonate/polyester alloy composition can have good mechanical properties and significantly improved long-term thermal-oxidative aging resistance. The preparation method of the polycarbonate/polyester alloy composition resistant to long-term thermal and oxygen aging of the present invention, the polycarbonate/polyester alloy composition can be prepared by premixing and extrusion granulation, and has the advantages of simple preparation steps and high production efficiency. Low cost and easy mass production. |