Mechanical properties
Determination of tensile and flexural properties was carried out
with a computer controlled mechanical instrument (DXLL-5000,
Shanghai D&G instrument Co., Ltd., China) according to GB
13022-91 and GB 1449-83 respectively. A crosshead speed of
2 mm/min was used. The test of Izod impact was performed by
Notched Izod impact instrument (XCJ-50 test machine, Chengde
test Instruments Ltd., China) accordance to GB 1451-83. At least
five specimens were used for each test.