The top coat is an important factor in the performance of the car seat leather coating, and the finishing additives will affect the top coat to a certain extent. Therefore, He Zhuangzhi and other scholars from the Ministry of Leather Chemistry and Engineering Education conducted experiments on the influence of finishing additives on the performance of top coatings, and introduced the specific experimental process in their paper "The Effect of Finishing Auxiliaries on Top Coating Properties". Using IWATA Spray Gun, abrasion resistance Tester, hot air circulation oven, electronic balance and other experimental instruments, using chrome-tanned car seat leather as the test material, and adding different types and amounts of additives to test the top coat various physical properties.
The experimental results show that the amount of cross-linking agent is not the better, when its amount reaches a certain value, there will be a "plateau", and then increasing the amount of cross-linking agent will not help the physical properties of the leather coating. The improvement of mechanical properties may even reduce some physical properties.
The hand feeling agent has a significant impact , and the difference is large. When designing the formula, the choice of the hand feeling agent is very important.
When the special additive is used for finishing, it can improve the gasoline rub resistance, dry flex resistance, wet flex resistance, cold flex resistance, wear resistance, brightness and repolishing performance of leather.
