The ability to predict the weathering performance of the clearcoat system over a short period of time is essential for the design and development of coating production. Thus, the primary objective of the present study...The ability to predict the weathering performance of the clearcoat system over a short period of time is essential for the design and development of coating production. Thus, the primary objective of the present study is to investigate whether it is possible to predict the weathering performance of an automotive paint system through determination of surface roughness, Ra, and micro-hardness before and after various weathering exposure times (0, 24, 168, 336, 504, 672 hours) and when employing two different detergent materials (house-use detergent and car wash detergent). The data were analysed using a pair-sample t-Test, with 0.05 level of significance. It was found that the total net of degradation in the clearcoat level during the first 24 hours was Ra ≈ 30.3 nm (for surface roughness) and 1.358 HV (for the μ-hardness) when using the house-use detergent. In contrast, it was found to be Ra ≈ 4.6 nm (for surface roughness) and 1.133 HV (for μ-hardness) when using the car wash detergent. Also, increased time of weathering (up to 672 hours) increases the Ra and μ-hardness values. It can therefore be concluded that the effect of house-use detergent was more severe than that of car wash detergent on the clearcoat system.展开更多
使用羟基丙烯酸树脂(ACR6736A),搭配固化剂(TMA-100),制得了一款应用于汽车修补漆的低VOC排放的2K清漆,并对其综合性能进行研究。实验结果表明,该款清漆具有较高的施工固含,在常规施工黏度18 s (25℃,涂-4杯)时,施工固含高达53.60%,VOC...使用羟基丙烯酸树脂(ACR6736A),搭配固化剂(TMA-100),制得了一款应用于汽车修补漆的低VOC排放的2K清漆,并对其综合性能进行研究。实验结果表明,该款清漆具有较高的施工固含,在常规施工黏度18 s (25℃,涂-4杯)时,施工固含高达53.60%,VOC含量为460.75 g/L,可满足当前的汽车修补漆清漆的VOC排放标准(≤480g/L)。而且,该款清漆具有较好的综合性能,其干性较快,硬度较好,光泽很高,外观优异,是一款低VOC排放、同时兼顾干性和外观的高性能2K清漆。展开更多
文摘The ability to predict the weathering performance of the clearcoat system over a short period of time is essential for the design and development of coating production. Thus, the primary objective of the present study is to investigate whether it is possible to predict the weathering performance of an automotive paint system through determination of surface roughness, Ra, and micro-hardness before and after various weathering exposure times (0, 24, 168, 336, 504, 672 hours) and when employing two different detergent materials (house-use detergent and car wash detergent). The data were analysed using a pair-sample t-Test, with 0.05 level of significance. It was found that the total net of degradation in the clearcoat level during the first 24 hours was Ra ≈ 30.3 nm (for surface roughness) and 1.358 HV (for the μ-hardness) when using the house-use detergent. In contrast, it was found to be Ra ≈ 4.6 nm (for surface roughness) and 1.133 HV (for μ-hardness) when using the car wash detergent. Also, increased time of weathering (up to 672 hours) increases the Ra and μ-hardness values. It can therefore be concluded that the effect of house-use detergent was more severe than that of car wash detergent on the clearcoat system.
文摘使用羟基丙烯酸树脂(ACR6736A),搭配固化剂(TMA-100),制得了一款应用于汽车修补漆的低VOC排放的2K清漆,并对其综合性能进行研究。实验结果表明,该款清漆具有较高的施工固含,在常规施工黏度18 s (25℃,涂-4杯)时,施工固含高达53.60%,VOC含量为460.75 g/L,可满足当前的汽车修补漆清漆的VOC排放标准(≤480g/L)。而且,该款清漆具有较好的综合性能,其干性较快,硬度较好,光泽很高,外观优异,是一款低VOC排放、同时兼顾干性和外观的高性能2K清漆。
