摘要
目的探究同色异谱颜料对太阳光反射隔热涂层性能的影响,为颜料的筛选提供理论支撑。方法分别将相同掺量的三种绿色颜料与苯丙乳液混合制备太阳光反射隔热涂层,探究颜料本身晶体结构和光学性能对涂层性能的影响。采用X射线衍射仪、紫外/可见/近红外分光光度计、红外发射率测量仪、精密色差仪和涂层力学性能测量仪对颜料和涂层的性能进行表征。结果晶粒尺寸较大的铁绿颜料相比于晶粒尺寸较小的铬绿颜料具有更优异的近红外反射性能,近红外反射比高0.110。三种绿色颜料对涂层红外发射率及力学综合性能的影响均较小,三种涂层的红外发射率均在0.90以上,综合力学性能均较好。近红外反射性能、近红外能量反射性能和隔热性能由高到低依次为铬绿、铁绿和钴绿涂层。结论筛选太阳光反射隔热涂层用颜料时,不应仅采用颜料的近红外反射比为衡量参数,而应权衡对应涂层的综合性能,从而对颜料筛选做出科学的判断。
Investigating effect of metameric pigments on properties of solar reflective insulation coatings so as to give ref- erence value to pigments screening. Solar reflective insulation coatings were prepared by introducing three types of green pig- ments with styrene-acrylic emulsion respectively. Influence of crystal structure and optical properties of pigments on properties of coatings was investigated. XRD diffraction, ultraviolet/visible/near infrared spectrophotometer, infrared radiance gauge and precision chromatic meter were used to characterize properties of pigments and coatings. Iron oxide green pigment, which had bigger grain size, presenting better near infrared reflective properties, which was 0.110 higher than chrome green pigments. In- fluence of three types of green pigments on infrared emissivity and comprehensive mechanical properties of coatings was in- conspicuous. Infrared emissivity of three coatings was above 0.90 and comprehensive mechanical properties were satisfactory. Near infrared reflective properties, near infrared energy reflective properties and insulation properties from high to low was chrome green, iron oxide green and cobalt green coating respectively. Comprehensive properties of coatings should be considers instead of near infrared reflectance of pigments when picking up pigments for solar reflective insulation coatings so as to mak-ing correct judgment.
出处
《表面技术》
EI
CAS
CSCD
北大核心
2017年第9期54-59,共6页
Surface Technology
关键词
冷颜料
反射率
红外发射率
晶体结构
晶粒尺寸
折射率
cool pigments
reflectance
infrared emissivity
crystal structure
grain size
refractive index
