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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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建筑外保温对建筑节能意义重大,为研制超耐久性、高效反射隔热涂料,氟碳树脂是首选的成膜物。叙述了反射隔热涂料组成与节能作用,并简介了性能溶剂型PVDF、FEVE氟树脂涂料卓越的耐久性及其水性化进展情况。 相似文献
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采用化学沉积法使TiO2以纳米粒子的形式包覆于空心玻璃微珠表面,成功制备了TiO2纳米晶/空心玻璃微珠复合填料,并以改性微珠及空心玻璃微珠作为填料制备隔热涂料,对其光反射性能、隔热效果、隔热效果的影响因素进行了研究。结果表明,TiO2在空心玻璃微珠表面包覆效果良好,且经过热处理后空心玻璃微珠破损率很低。以改性微珠作为填料制备的涂料,涂膜对太阳光主要能量波段的光反射性能得到显著提高,其隔热效果较普通外墙涂料和空心玻璃微珠涂料相比有了明显的提高,且改性微珠添加量的多少对隔热温差的影响要大于厚度和白度对隔热温差的影响。 相似文献
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以纳米氧化锡锑(ATO)水性浆料为隔热材料,水性聚氨酯树脂(APU)为成膜物质制备出ATO/APU纳米复合透明隔热涂料。对悬浮ATO粒子的分散稳定性、ATO/APU复合涂膜的物理性能、可见光-近红外透射光谱透过率、隔热性能进行研究。结果表明,纳米ATO粉体通过偶联剂KH-550改性后,与APU复合制得了分散稳定的纳米复合涂料;ATO/APU复合涂料不仅具有良好的成膜性能,而且在保持可见光透过率83.0%时,红外阻隔率达到70%,隔热后温差能保持在6℃左右,复合涂料具有良好的隔热性能。 相似文献
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Although epoxy resins exhibit a wide range of useful properties for protective coatings on metal substrates, an increasing trend in the coatings industry toward more formable coatings places a severe burden on the traditional bisphenol. A based epoxy resins. Presented in this work are the results of experiments with a new series of epoxy resins based on alkylenedioxy diphenols demonstrating the relationship between coating performance properties (formability, chemical resistance, and adhesion) and structural parameters such as resin backbone flexibility, degree of phenol/formaldehyde crosslinkmg, and concentration of OH groups in the backbone of epoxy resins. Optimizing the three structural parameters for the new resins results in substantial improvements in coating performance properties over the traditional bisphenol A based resins. 相似文献
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以BS43N乳液及有机硅氧烷改性丙烯酸酯共聚物乳液为基料,以钛白粉为颜料,以红外粉、包覆空心玻璃微珠等为填料,在助剂的配合下,制备了隔热外墙涂料。对空心玻璃微珠包覆前后外貌进行了电镜分析,并对乳液配方进行优化试验,确定了最佳配方。结果表明:选取m(BS43N)∶m(有机硅氧烷改性丙烯酸酯共聚物乳液)=(4∶6)~(5∶5)的比例制备的涂料效果较好,涂料耐沾污性、透气性、隔热性都有明显提高。 相似文献
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通过对几种常用环氧树脂常温固化剂性能的比较和应用结果表明,以天然腰果壳油合成的长链的取代酚醛胺固化剂,具有优异的综合防护性能,是环氧树脂高性能化的一种途径。 相似文献
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Umesh D. Harkal Andrew J. Muehlberg Dean C. Webster 《Journal of Coatings Technology and Research》2013,10(2):141-151
An approach to the design of highly flexible coatings based on glycidyl carbamate (GC) chemistry is presented. In past work, GC resins had been synthesized by reacting polyisocyanates such as hexamethylene diisocyanate biuret or hexamethylene diisocyanate isocyanurate resins with glycidol. When crosslinked with amines, due to their high functionality, these resins form very hard and tough coatings, but the coatings have limited flexibility. To obtain coatings with good flexibility, several GC resins were synthesized using linear and cycloaliphatic diisocyanates and a combination of diols and triol with glycidol. The combination of linear diisocyanates and diols introduces a more linear structure in the GC resin compositions. Crosslinked coatings were obtained using two amine crosslinkers, para-aminocyclohexyl methane (PACM) and a commercial polyamide, Ancamide-2353 (A-2353). The flexibility of the coatings was characterized using reverse impact test, GE impact test, and elongation at break in tensile test. The coatings were further characterized to determine their chemical resistance, hardness, thermal stability, and corrosion resistance. The diisocyanate composition and composition of diols and triol influenced the performance of the coatings. In order to understand the influence of the composition of the GC resins on their performance, coatings were characterized using differential scanning calorimetry and dynamic mechanical analysis. 相似文献