In addition to typical TPU properties such as good abrasion resistance, flexibility over a broad temperature range and good resistance to weathering and chemicals, the latest market demands are for increasingly good light stability and transparency. In order to meet the tough requirements in terms of light stability, aliphatic building blocks are needed. The optical appearance (turbid to transparent) of TPUs is related to the light scattering effect of the phase separation into hard and soft segments. To enhance transparency, either physical or chemical methods can be used. With all these aliphatic TPU material advancements, creating products that are bright and colorful or transparent and protective can become common occurrence. These new materials can offer competitive advantages since the excellent properties of a TPU can now be offered in a fully cosmetically appealing product, making design innovations and creative schemes simple. In addition, excellent substrate adhesion, a balanced property matrix, the ability to be creatively colored, and its soft-feel characteristics make HDI based TPUs a natural fit for multi-component or overmolding applications.
展开▼
