Flexibility and mechanical performance are essential for transparent silicone materials applied in some optical and electronic devices; however, the tensile strength of transparent silicone materials is fairly low. To overcome this problem, a kind of UV-cured transparent flexible silicone material with quite a high tensile strength and elongation at break was developed through UV-initiated thiol–ene reaction by hyperbranched silicon-containing polymers (HBPs) with a thiol substitute and acrylate-terminated polyurethanes. Unexpectedly, it is found that both the tensile strength and elongation at break of the transparent silicone materials are extraordinarily high, which can reach 3.40 MPa and 270.0%, respectively. The UV-cured materials have good UV resistance ability because their transmittance is still as high as 93.4% (800 nm) even when aged for 40 min in a UV chamber of 10.6 mW cm^–2. They exhibit outstanding adhesion to substrates, and the adhesion to a glass slide, wood, and a tin plate is grade 1. The promising results encourage us to further improve the mechanical performance of flexible transparent silicone materials by effective chemical modification strategies with HBPs. An attempt was made to apply the UV-cured materials in a Gel-Pak box and it could be proved that the UV-cured materials may be one of the good candidates for use as packaging or protecting materials of optical or electronics devices such as the Gel-Pak product.

中文翻译：

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由超支化含硅聚合物和聚氨酯丙烯酸酯制备的具有高拉伸强度的紫外线固化透明有机硅材料

柔性和机械性能对于某些光学和电子设备中使用的透明有机硅材料至关重要。然而，透明有机硅材料的拉伸强度相当低。为了克服这个问题，通过具有硫醇替代物和丙烯酸酯的超支化含硅聚合物（HBP）通过紫外线引发的硫醇-烯反应，开发了一种具有很高的拉伸强度和断裂伸长率的紫外线固化透明柔性有机硅材料。封端的聚氨酯。出乎意料的是，发现透明有机硅材料的拉伸强度和断裂伸长率都异常高，分别可以达到3.40MPa和270.0％。UV固化材料具有良好的抗紫外线能力，因为它们的透射率仍高达93。^–2。它们对基材具有出色的粘合性，对玻璃片，木材和马口铁的粘合性为1级。有希望的结果鼓励我们通过HBP的有效化学改性策略进一步改善柔性透明有机硅材料的机械性能。尝试将UV固化的材料施加在Gel-Pak盒中，可以证明UV固化的材料可能是用作包装或保护光学或电子设备（例如电子产品）的材料的良好选择之一。 Gel-Pak产品。