화학공학소재연구정보센터
Macromolecular Research, Vol.28, No.11, 1032-1039, October, 2020
Effects of Polyether and Polyester Polyols on the Hydrophobicity and Surface Properties of Polyurethane/Polysiloxane Elastomers
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Polyurethane (PU) elastomer has been widely used in many fields. In this work, polyurethane/polysiloxane elastomers are synthesized by one-step polymerization using polyether and polyester polyols. The properties of polytetramethylene ether glycol (PTMG) and polycarbonate (PCDL) on polyurethane/polysiloxane elastomers are characterized by various test methods. The results show that PTMG is superior to PCDL in heat resistance and hydrophobicity to polyurethane/polysiloxane elastomers. The heat resistance index of PTMGPU is as high as 154 °C, and its contact angle has reached 115.2°. In addition, the surface of PTMGPU contains more silicone. This may be because the chain structure of PTMG is conducive to the migration of siloxane to the surface, and then a Si-O-Si protective layer is formed, thereby improving the heat resistance and hydrophobicity of the surface of PTMGPU. PCDLPU shows good mechanical properties, which may be related to the stronger chain structure of PCDL. This provides a theoretical basis for the future application of polyurethane/polysiloxane materials.
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