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Abstract
This paper investigated rheological properties of diallyl orthophthalate/poly(vinyl chloride) (DAOP/PVC) blends and interfacial properties of DAOP/PVC composites reinforced by DAOP-modified glass fibres. Various DAOP/PVC blends were prepared with dicumyl peroxide, and the low-viscosity and cross-linkable DAOP was used as a reactive plasticiser to improve the processing and mechanical properties. On this basis, the rheology, thermal property and morphology of the prepared composites were studied by rheometer, differential scanning calorimeter, dynamic mechanical thermal analysis and scanning electron microscope. Dynamic mechanical thermal analysis results indicated that Tg of the cured DAOP/PVC blends was almost identical to that of PVC. Dynamic rheology of the cured blends showed that DAOP could reduce the processing temperature and PVC viscosity. Macro-mechanical properties and scanning electron microscope analysis demonstrated that interfacial bonding properties of the DAOP/PVC composites reinforced by modified glass fibre could be effectively enhanced by using DAOP, with its tensile and flexural strengths increased by 20.16 and 28.58%, respectively.