CAJ | 학술논문

采用1H,1H,8H,8H-十二氟-1,8-辛二醇(F12)对水性聚氨酯进行改性，制备了氟化水性聚氨酯，通过红外光谱、扫描电镜对产物进行了表征，研究了不同F12含量制备的氟化水性聚氨酯的吸水率和水接触角，测试了涂膜的力学性能。结果表明，随着 F12含量的增加，所制备的氟化水性聚氨酯涂膜的水接触角、附着力以及硬度逐渐增大，吸水率逐渐降低，拉伸强度、断裂伸长率则先增加后减少。当F12用量为0.3%~0.4%时，涂膜的综合性能较佳：附着力1级，铅笔硬度H~2H，柔韧性3~5 mm，拉伸强度16.32~18.64 MPa，断裂伸长率397.65%~301.65%，涂膜吸水率7.1%~6.7%，水接触角67°~72°。以F12制备的氟化水性聚氨酯表面能低，具有良好的拉伸强度和耐水性，有望在纺织物及海洋防污涂层材料中得到应用。
채용1H,1H,8H,8H-십이불-1,8-신이순(F12)대수성취안지진행개성，제비료불화수성취안지，통과홍외광보、소묘전경대산물진행료표정，연구료불동F12함량제비적불화수성취안지적흡수솔화수접촉각，측시료도막적역학성능。결과표명，수착 F12함량적증가，소제비적불화수성취안지도막적수접촉각、부착력이급경도축점증대，흡수솔축점강저，랍신강도、단렬신장솔칙선증가후감소。당F12용량위0.3%~0.4%시，도막적종합성능교가：부착력1급，연필경도H~2H，유인성3~5 mm，랍신강도16.32~18.64 MPa，단렬신장솔397.65%~301.65%，도막흡수솔7.1%~6.7%，수접촉각67°~72°。이F12제비적불화수성취안지표면능저，구유량호적랍신강도화내수성，유망재방직물급해양방오도층재료중득도응용。
A fluorinated waterborne polyurethane was prepared by modification of water-based polyurethane using 1H,1H,8H,8H-dodecafluoro-1,8-octanediol (F12), and then characterized by infrared spectroscopy and scanning electron microscopy. The water absorption rates, water contact angles, and mechanical properties of the fluorinated water-based polyurethane coatings prepared with different contents of F12 were studied. The results showed that the water contact angle, adhesion strength, and hardness of the prepared fluorinated water-based polyurethane coating are increased gradually with increasing content of F12 while the water absorption is decreased, and the tensile strength and elongation at break are increased initially and then decreased. When the content of F12 is 0.3%-0.4%, the comprehensive performance of the coating obtained is the optimal: adhesion strength 1 grade, pencil hardness H-2H, flexibility 3-5 mm, tensile strength 16.32-18.64 MPa, elongation at break 397.65%-301.65%, water absorption rate 7.1%-6.7%, and water contact angle 67°-72°. The F12-fluorinated water-based polyurethane has low surface energy as well as good tensile strength and water resistance, being able to be used for fabrics and as a marine antifouling coating material.