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<p>在國內,<a href="https://www.ow.com.tw/transparent-case">透明手機殼</a>占據手機殼市場70%的市場份額,但透明手機殼用久了就會發黃變硬,視覺和手感都受影響。爲什麽透明手機殼會發黃,有辦法阻止嗎?</p> <p>大部分的<a href="https://www.ow.com.tw/transparent-case">手機透明殼</a>采用的是TPU材質,這種材料具有柔軟減震、散熱透氣等綜合性能。TPU材料也稱聚氨酯,是二異氰酸酯分子和高分子多元醇,從而得到的高分子材料,因爲其中的鏈接基因有芳族基因是不飽和的結構,在高溫加工下會和空氣中的負離子發生反應的,所以就會導致産品老化或變色。</p> <p><img src="https://www.ow.com.tw/wp-content/uploads/2023/09/為什麼我的透明手機殼會發黃.webp" width="800" height="774" /></p> <p>由于TPU材料分子間縫隙較大,<a href="https://www.ow.com.tw/">手機殼</a>在日常使用過程中,在細菌、空氣中紫外線、手汗、化妝品殘留等因素的影響下也易老化發黃。並且TPU發黃是一種不可逆的物理屬性,手機殼發黃表示這個手機殼存留了較多髒汙,材質也已老化,需要更換了,長期使用發黃的手機殼對健康也不利。</p> <p>隨著塑膠行業的技術不斷創新,爲了避免出現變黃的現象,許多專家都做出了相應的努力,但現有的技術只能延緩變黃時間。</p>