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矽膠首頁 >> 新聞資訊 >>新聞資訊 >>行業新聞 >> 防止矽膠制品老化的方法有哪些

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防止矽膠制品老化的方法有哪些

矽橡膠産品會因高溫開裂而老化，也會因膨脹而耐溶劑損失性能，任何物品都會老化，但只能長時間使用，這樣才能使産品長期使用，必須采取一些措施防止老化。矽橡膠制品具有開放的多孔結構，能吸附許多物質，是一種很好的幹燥劑、吸附劑和催化劑載體。矽膠産品通過矽膠注塑噴射成型的，産品柔軟，硬度可以達到10°C-40°C，因其柔軟的特性，在仿真人體器官，醫療矽膠胸墊，等廣泛運用。

　　矽膠制品老化可以預防研究方法：

1、根据老化机理的不同，提出了相应的抗老化措施，主要包括物理防护和化学防护。物理防护是指尽可能避免橡胶与各种老化因素之间的相互作用，如橡塑共混、表面涂层或处理、遮光剂、石蜡等。化学防护是指为防止或延缓橡胶老化反应进程而主动添加的物质，如添加胺或酚类化学抗氧化剂。

2、矽橡膠制品防老化方法: 防老化主要从减少硫化橡胶聚合物链不饱和双键开始，例如用一些侧链改性，使用特殊的化学反应，使不饱和键饱和，使分子层结构提高耐老化性，延缓老化，延长其使用寿命。

3、在制造工業橡膠制品過程中，接著加入抗氧化劑，例如在硫化橡膠配方中加入紫外線穩定劑、防黴劑、熱穩定劑等，加入防止臭氧或氧引起老化的抗氧化劑。

4、老化除了我们可以同时通过不断改变矽橡膠制品结构设计本身来实现，也可以选择通过外物填加剂来实现，而这种填加剂被成为抗老化剂或发防老化剂。抗老化硅橡胶就是在企业生产发展过程中需要提前考虑的老化影响因素，并且在抗老化方面研究作出一个很大努力的一类硅橡胶。

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