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Citation: Xu Weibing, Zhu Shiwang, Cai Qiongying. Microstructure and Mechanical Properties of Polyoxymethylene and Polyurethane Blends[J]. Chinese Journal of Applied Chemistry, ;1995, 12(6): 65-67. shu

Microstructure and Mechanical Properties of Polyoxymethylene and Polyurethane Blends

Institute of Chemical Engineering, Hefei University of Technology, Hefei 230009

Received Date: 18 January 1995
Revised Date: 3 July 1995

The microstructure of polyoxymethylene (POM)/polyurethane (PU)/ethylene-vinylacetate copolymer blends were analyzed by SEM, DSC and WAXD techniques,andtheir mechanical properties were measured. The results showed that the addition of PU caused the decrease of T_m and crystallinity of blends,the increase of the crystallite size L₁₁₀ and the cell parameters of the blends,the decrease of the tensile strength and the appearance of peak value in notched impact strength. Crystallite size L₁₁₀ between 10.86nm and 14.87nm led to modified POM with good balanced mechanical properties.
- polyoxymethylene,
- polyurethane,
- blend,
- microstructure,
- mechanical property
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