CAJ | 학술논문

选择醇酸、丙烯酸、聚氨酯和氟碳4 类涂料进行对比试验,研究其耐紫外、耐湿热和耐碱溶液的性能.试验结果表明:醇酸涂层和丙烯酸涂层整体耐老化性能较差,湿热老化处理7d 后,试件的失光率高达90%以上,表面出现严重的开裂和起泡现象.聚氨酯涂层耐碱溶液的性能较好,但是受紫外老化和湿热老化影响较大,其紫外老化28 d 后失光率大于75%,拉伸强度和断裂伸长率下降超过40%,湿热老化7 d后的失光率达97%,表面开裂和起泡情况严重.氟碳涂层耐老化性能优异,老化28 d 后失光率不到20%,表面无粉化、开裂、起泡、剥落等现象,拉伸性能未受损害.4 类涂层耐老化性能的顺序为醇酸涂层 <丙烯酸涂层<聚氨酯涂层<氟碳涂层.
선택순산、병희산、취안지화불탄4 류도료진행대비시험,연구기내자외、내습열화내감용액적성능.시험결과표명:순산도층화병희산도층정체내노화성능교차,습열노화처리7d 후,시건적실광솔고체90%이상,표면출현엄중적개렬화기포현상.취안지도층내감용액적성능교호,단시수자외노화화습열노화영향교대,기자외노화28 d 후실광솔대우75%,랍신강도화단렬신장솔하강초과40%,습열노화7 d후적실광솔체97%,표면개렬화기포정황엄중.불탄도층내노화성능우이,노화28 d 후실광솔불도20%,표면무분화、개렬、기포、박락등현상,랍신성능미수손해.4 류도층내노화성능적순서위순산도층 <병희산도층<취안지도층<불탄도층.
T he paper carries out comparative studies on the resistance performance of four coating materials-alcohol acid,acrylic acid,polyurethane and fluorocarbon-against UV,moisture-heat and aqueous alkali. The results indicate that the first two choices-being alcohol acid and acrylic acid-deliver a poor aging performance,as both display a more than 90% gloss loss with severe cracking and foaming after seven days of moisture-heat treatment. Polyurethane on the other hand performs well in terms of aqueous alkali resistance,yet the coating is heavily influenced by UV and moisture-heat. T he paper noticed ( in the polyurethane specimen) an above 75% gloss loss and a more than 40%drop in tensile strength and in extensibility after 28 d of U V treatment. And 7 d moisture-heat treatment gives rise to a 97% gloss loss and severe cracking and foaming. As for the fluorocarbon,it stands out for its aging resistance,as 28 d aging treatment only results in a less than 20% gloss loss. At the same time,no visible pulverization,cracking, foaming or exfoliation is noticed and the tensile performance is hardly undermined. T herefore it can be concluded that the ranking list for the above mentioned four specimens should be alcohol acid <acrylic acid <polyurethane <fluorocarbon.