Study on properties of transparent toughened rPET/rPCTG alloys

doi:10.19491/j.issn.1001-9278.2023.09.006

Abstract

Abstract:

Transparent toughened recycled polyethylene terephthalate （rPET）/recycled poly（1，4⁃cyclohexylene dimethylene terephthalate glycol）（rPCTG） alloys was prepared through melt blending. The effect of rPCTG content on the mechanical properties， transparency and thermal properties of the alloys were investigated. The results indicated that the tensile and bending properties and transparency of the alloys decreased with an increase in the rPCTG content， whereas their impact properties increased significantly. When the rPCTG content was 15 wt%， the alloys obtained an increase in impact strength from 54.8 J/m to 68.0 J/m， increasing by 24.2 %. However， there was almost no influence on their tensile and bending properties， transparency， and haze.

Key words: recycled poly（1，4?cyclohexylene dimethylene terephthalate glycol）, recycled polyethylene terephthalate, toughening, transparency, mechanical property

CLC Number:

TQ323.4⁺1

MEI Yuan, LI Zhen, XU Lubo, MA Yiming. Study on properties of transparent toughened rPET/rPCTG alloys[J]. China Plastics, 2023, 37(9): 39-43.

Figures/Tables 7

样品

拉伸强度/MPa

拉伸模量/

MPa

冲击强度/

J•m^-1

弯曲强度/

MPa

弯曲模量/

MPa

Tab.1. Mechanical properties of rPET and rPCTG

Fig.1. Tensile strength and tensile modulus of rPET/rPCTG alloy with different contents of rPCTG

Fig.2. Flexural strength and flexural modulus of rPET/rPCTG alloy with different contents of rPCTG

Fig.3. Impact strength of rPET/rPCTG alloy with different contents of rPCTG

Fig.4. Transparency and haze value of rPET/rPCTG alloy with different contents of rPCTG

Fig.5. SEM of rPET/rPCTG alloys with different contents of rPCTG

Fig.6. DSC results of rPET/rPCTG alloys with different contents of rPCTG

References 10

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