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氟碳树脂的合成及有机硅改性 总被引:5,自引:0,他引:5
以偶氮二异丁腈为引发剂,甲基异丁基甲酮为溶剂,将氟碳单体与甲基丙烯酸甲酯、丙烯酸乙酯、丙烯酸丁酯等单体进行溶液聚合得到氟碳树脂共聚物。当氟碳单体质量分数较低(5%)时,加入质量分数为2%~8%的有机硅烷偶联剂单体,制得有机硅改性氟碳树脂共聚物。性能测试结果表明:该有机硅改性共聚物具有硬度高、耐水、耐碱、耐溶剂、表面自洁及耐沾污等优良性能。有机硅改性不但提高了氟碳树脂的性能,而且降低了成本,为其工业化生产和制备有机硅改性全氟碳涂料创造了条件。 相似文献
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将空心玻璃微球、陶瓷微球、α-氧化铝和γ-氧化铝添加至水性氟碳涂料中,研究其对水性氟碳涂料的反射隔热性能、白度、黏度、耐酸性、耐热性和涂料外观形貌的影响。结果表明:多聚磷酸钠对无机填料具有良好的分散效果;空心玻璃微球提高了涂料隔热性能,降低了涂料用量,改善了涂料其他性能,但加入量过多会增加涂料黏度,影响施工性能。陶瓷微球、α-氧化铝和γ-氧化铝等无机粒子会提高涂料的热反射性能。混掺空心玻璃微球、陶瓷微球和γ-氧化铝加入水中,提高了涂料的反射隔热、耐酸性和耐热性性能。 相似文献
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本文研究了在丙烯酸锌作用的条件下加入改性碳纳米管后对于EPDM粘合性能、机械性能的影响,并对填料的分散性能进行了考察。结果表明,当丙烯酸锌为12份时,改性碳纳米管为6份时,粘合性能最佳,在于镀铜钢丝粘合后的抽出力为725N,撕裂强度73.85N?mm-1,拉伸强度为22.2MPa;随着改性碳米管的增加,粘度增大,加工性能降低,Payne效应增加。 相似文献
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功能型FEVE氟碳树脂涂料 总被引:2,自引:0,他引:2
简单介绍功能型FEVE氟碳树脂涂料,诸如烘烤型氟碳涂料、弹性氟碳涂料、高硬度氟碳涂料、防涂鸦氟碳涂料和塑料用氟碳涂料的概况,以适应市场多元化和差异化要求。 相似文献
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实验制备了纳米金/碳纳米管/Nafion膜修饰电极。研究了在修饰电极上硝基苯酚的电化学特性。实验采用循环伏安法研究硝基苯酚的电化学行为,研究发现在醋酸盐缓冲溶液pH值为4.80(0.2 mol/L HAc-0.2 mol/L NaAc )底液中,硝基苯酚的浓度与峰电流值在2.5×10-7~1.8×10-5 mol/L范围呈现良好的线性关系,最低检测限5×10-8 mol/L。用此电极对实际样品中硝基苯酚的含量进行了测定。 相似文献
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This study aimed to describe the adsorption process of ortho-dichlorobenzene (o-DCB) onto activated carbons (ACs) and modified carbon nanotubes (CNTs) from the aqueous phase. The starting material NC_7000 carbon nanotubes were modified by chlorination (NC_C) and then by the introduction of hydroxyl groups (NC_C_B). The concentration of o-DCB in solutions was performed by UV-VIS spectrophotometry. After adsorption, the activated carbons were regenerated by extraction with organic solvents such as acetone, methanol, ethanol, and 1-propanol; the carbon nanotubes were regenerated by methanol. The degree of adsorbate recovery was determined by gas chromatography (GC) with flame ionization detection, using ethylbenzene as an internal standard. The equilibrium isotherm data of adsorption were satisfactorily fitted by the Langmuir equations. The results indicate that carbon adsorbents are effective porous materials for removing o-DCB from the aqueous phase. Additionally, activated carbons are more regenerative adsorbents than carbon nanotubes. The recoveries of o-DCB from ACs were in the range of 76–85%, whereas the recoveries from CNTs were in the range of 23–46%. Modifications of CNTs affect the improvement of their adsorption properties towards o-DCB compared to unmodified CNTs. However, the introduction of new functional groups on carbon nanotube surfaces makes the regeneration process less effective. 相似文献