| 摘要 |
The present invention achieves a polymer substrate with a hard coat layer, the polymer substrate combining both high environmental resistance and a high degree of abrasion resistance. Provided is a polymer substrate with a hard coat layer, comprising a polymer substrate (60) having a thickness of 1-20mm, and a hard coat layer (70, 80) formed on the surfaces of the substrate. In the polymer substrate with a hard coat layer, the hard coat layer (70, 80) comprises: base cured layers (70) that are laminated on the surfaces of the polymer substrate, that contain as a main component a hydrolysis condensate of an organosilicon compound, and that have a thickness of 0.1-20μm; and a silicon oxide layer (80) that is in direct contact with the base cured layer on a side opposite the polymer substrate, that is formed by an organosilicon compound PE-CVD method, and that satisfies all of conditions (a)-(c) below. (a) The film thickness of the silicon oxide layer is within the range of 3.5-9.0 μm. (b) The maximum indentation depth of the surface of the silicon oxide layer is no more than 150nm according to nano-indentation measurement under maximum load conditions of 1mN. (c) The value of a critical compression rate K of the silicon oxide layer is no more than 0.975 in a three-point bending test of the polymer substrate with a hard coat layer in which indentation displacement is imparted so that the surface onto which the silicon oxide layer is laminated is depressed. |
