Combining Textured Copper with Cast Resin
纹理铜件与透明树脂的复合
标签：树脂复合, 透光, 混合材料, 灯具
把带纹理的铸铜框与透明环氧/聚氨酯结合可做透光饰件：铜件结合面 120 目喷砂增强附着，灌注前丙酮擦净脱模剂；树脂选抗黄变脂肪族体系，分两层浇注（先 5 mm 打底固化 24 h 再补满），总厚超 15 mm 的放热会烫出应力纹，改用 8 h 凝胶的慢固化型。灯具厂用此工艺做"铜纹透光罩"，纹理在背光下投影成图案。注意铜与树脂热膨胀差约 10 倍，铜框内侧预留 0.3 mm 伸缩缝防止开裂。
Pair textured cast-copper frames with clear epoxy or polyurethane for translucent panels: grit-blast mating faces at 120 mesh, wipe release agent off with acetone, and pour an aliphatic non-yellowing resin in two stages (5 mm base cured 24 h, then filled up); over 15 mm total the exotherm stresses the resin—use an 8 h gel-time system instead. Lighting brands cast "textured glow shades" this way, the pattern projecting under backlight. Copper and resin differ ~10× in thermal expansion, so leave a 0.3 mm expansion gap at the frame.