Research on the Effect of Different Processes on DMFA Content in Synthetic Leather Production  

作　　者：YANGJing 

机构地区：[1]HangzhouKaluoIndustryCo.,Ltd.,Hangzhou311600,China

出　　处：《外文科技期刊数据库(文摘版)工程技术》2022年第3期181-187,共7页

摘　　要：In this paper, the effects of different processes on the DMFA content of synthetic leather were studied. The changes of DMFA content of different products and processes were compared. The effects of different chemicals and processes on the DMFA content of synthetic leather were investigated. Through experiments, the best solution at this stage is found to solve the problem of high content of DMFA in finished products. The results show that: 1. There are two critical control points with high DMFA content: 1 is direct coating (veneer) process (the most obvious increment), and the increment of this process is not easy to be processed in the later stage, and 2 is Besbe. The effect of reducing DMFA content is remarkable after optimizing the process. 2. The content of DMFA increased by direct coating process is larger than that of veneer process. The materials used in this process have the greatest influence on DMFA, and the oven temperature has certain influence on this process, but it can't achieve the expected effect of our company on ultra-low DMFA products without changing the materials. The best solution is to change the materials. 3. After changing the materials, the DMFA of direct coating process tends to be 0. Tracking the effect of the scheme, it is found that there is a large DMFA increment during treatment, but the increment can be treated in the later stage, and the scheme has a comprehensive influence on the DMFA content of a product, not limited to the local part. Up to now, the best scheme to reduce DMFA is to select ultra-low DMFA bass on bass, use 2030 DMFA-free material for direct coating process, properly bake, emboss and bake the finished product. (The quality inspection department needs to conduct follow-up sample tracking test).

关 键 词：DMFA (dimethylformamide) beth direct coating VENEERS HANDLING EMBOSSING 

分 类 号：TB[一般工业技术]