How to distinguish TPU?
Recently, plastic products are more and more in our life. Some plastic is toxic while others is eco-friendly. As we know, TPU is one of eco-friendly plastic and which in different degrees has different property. In contrast, silica gel and synthetic rubber are not as eco-friendly as TPU, though they has similar property. Here we have some ways to distinguish TPU, silica gel and synthetic rubber. TPU: 1. Clear or colored. 2. Has yellow flame, a little explosion, few white smoke when fire. It can also have black smoke when it’s not fully fire sometimes. 3. A little bit fragrance. 4. Range of hardness is 60A-80D. Silica gel: 1. Has bright white flame when fire. 2. A little bit smell and smoke when fire. The residue after fire is white powder. 3. Range of hardness is 10A-90A. Synthetic rubber: 1. The firing flame is yellow. 2. Smelly w