紫外光固化材料热老化黄变的研究

本文通过监测添加不同类型和不同比例的抗氧剂的紫外光固化材料在热老化过程中黄变因数的变化,来考察抗氧剂对紫外光固化材料热老化黄变的影响和不同的抗黄变能力.利用紫外-可见光谱仪表征老化过程试样的透光率,结果表明,抗氧剂能很好地减小紫外光固化材料的热老化黄变,抗氧剂中的羟基的抗黄变能力存在差异,决定了抗氧剂的抗黄变能力.Irgafos-168分别与Ir-ganox-1010和Irganox-1076复配时,表现出较好的协同效应,从而使复配抗氧剂的抗黄变能力比单组分抗氧剂的抗黄变能力强.

The Research on Thermal Aging Yellowing of UV-Curing Material

The changing of yellowing factor of UV-curing material was monitored.The samples were added in different types and different proportion of antioxidants during thermal aging process to study the anti-yellowing effects of antioxidants and the different anti-yellowing ability of antioxidants.The UV-Vis spectrum was used to meter the transmittance of samples.The result shows that the antioxidant can reduce the yellowing degree during thermal aging process.The anti-yellowing ability of antioxidant is relative with the anti-yellowing ability of the hydroxyl in the antioxidant.There are synergistic effects in Irganox-1010/Irgafos-168 and Irganox-1076/Irgafos-168,and they show a better anti-yellowing effect than single antioxidant.