摘要
在紫外光固化体系中加入各种不同的无机纳米材料,考察了纳米材料本身的性质、体系黏度、纳米材料含量和分散方式对无机纳米粒子分散稳定性的影响。结果表明,纳米材料表面经过硅烷偶联剂或硬脂酸的处理,体系黏度的增大、合适的纳米材料含量(质量分数3%)、超声-高速剪切等有助于提高纳米材料在紫外光固化体系中的稳定性。以纳米二氧化钛为例:紫外光固化体系黏度由25 s提高到267 s,其分散稳定性由1 d提高到5个月以上;质量分数由1%提高到3%,其分散稳定性在12 d左右,继续提高其质量分数至5%,分散稳定性下降至7 d。
A number of inorganic nano-materials were added into the UV-curable systems. The influences of properties of nano-materials, viscosity of the UV-curable systems, mass content （ % ） of nano-materials and dispersing method to the dispersion stability were investigated. The results showed：the surface modification of nano-materials by silane coupling agent or stearic acid, increasing viscosity of the UV-curable systems,suitable mass content （3%） of nano-materials and ultrasound-high speed shearing dispersionwere beneficial to improve the dispersion stability of nano-materials in the UV-curable systems. Taking nano-TiO2 as an example, the viscosity of the UV-curable systems increased from 25 s to 267 s, the dispersion stability of it increased from one day to five months. The mass content of nano-TiO2 raised from 1% to 3% ,the dispersion stability was about twelve days, but the dispersion stability decreased to seven days when the mass content of nano-TiO2 raised to 5%.
出处
《应用化工》
CAS
CSCD
2009年第3期375-377,381,共4页
Applied Chemical Industry
