Copper Coloring in Historical Chinese Texts
《天工开物》与《营造法式》中的铜着色记载
标签：天工开物, 营造法式, 文献考证, 铜绿, 传统配方
文献考证显示：宋《营造法式》铜作制度仅规定铜瓦、铜钉的成分与磨砻工序，未涉人工着色；明《天工开物·五金》详记黄铜"红铜六斤、倭铅四斤"的 60:40 配比及铸鼎流程。系统的人工铜绿制法见于《本草纲目》引述——铜板以醋糟堆捂、温湿熏蒸旬日生绿，即现代醋酸氨熏铜绿（碱式碳酸铜）的先驱。这类文本可为当代仿古建筑铜件的做旧提供"有据可依"的配方依据。
Textual research shows the Song-dynasty Yingzao Fashi specifies composition and grinding for copper tiles and nails but no artificial coloring, while the Ming Tiangong Kaiwu records the 60:40 brass recipe ("six parts copper, four parts tutty"). Systematic verdigris making appears in the Bencao Gangmu: copper sheets buried in vinegar dregs and fumed warm-humid for ten days — the ancestor of today's acetic-ammonia verdigris (basic copper carbonate). Such sources give heritage-architecture patina work a documentary basis. ---