本研究為利用球化技術將聚甲基丙烯酸甲酯(PMMA)與氮化硼(h-BN)等初始粉體,製備成球型氮化硼複合粉體並將所製備的球型氮化硼複合粉體以3 wt%及10 wt%的添加比例添入市售之BB霜中,製備成具有防曬與涼感效果的氮化硼複合BB霜。本實驗亦同時亦將原始的氮化硼粉體,依相同的添加比與製備方式製備氮化硼複合BB霜以共同比較其特性。 本研究的檢測分為兩個階段,第一階段為對粉體的部分進行檢測,包含了粉體表面與斷面做掃描式電子顯微鏡的觀測、粒徑分析、比表面積分析與吸油度以及進行穿透式吸收的光學檢測。而第二階段為將氮化硼複合粉體添加至BB霜中,製備出氮化硼複合BB霜,做防曬係數測試、紫外 - 可見光穿透式的光學檢測、熱傳導率的測量以及塗抹於人體的塗佈性比較。 實驗結果顯示,以PMMA與h-BN所製成的球型複合粉體有最佳的吸油性259 g/100 g且粉體於紫外光UVB、UVA波段部分的吸收性最好;而在添加量為10 wt%的添加比例時於紫外光波段UVB的遮蔽性與熱傳導率以及體感塗抹的不油膩表現上皆優於未經球化之h-BN所製備之BB霜。
In this study, the spray drying process was used to prepare spherical composite powders based on PMMA and h-BN powders. These powders were mixed into linseed oil to prepare an emulsion for sunscreen protection application. For compared the result, the original powder h-BN then mixed into linseed oil to prepare an emulsion for sunscreen protection application. First, the prepared powders were examined by scanning electron microscopy, particle size analyzer, spectrophotometer, and oil absorption analysis. These powders were mixed into linseed oil to prepare an emulsion for sunscreen protection application. The synthesis emulsions measurement was used to UV-Visible spectroscopy, sun protection factor and thermal conductivity analysis. The spherical composite powders made by PMMA/h-BN has the best oil absorption 259 g/100 g and the best optical absorption on UVB wavelength (290-320 nm). It also has the better optical absorption on UVB and UVA wavelength and thermal conductive than the original powder h-BN when the quantity of powders were mixed into linseed oil reach 10 wt% .