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聚四氟閥座（玻璃鋼F4乙丙）

規格DN50-DN600

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閥座

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聚四氟閥座

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產(chǎn)品描述

除熔融的堿金屬外，聚四氟乙烯幾乎不受任何化學(xué)試劑腐蝕。例如在濃硫酸、硝酸、鹽酸，甚至在王水中煮沸，其重量及性能均無(wú)變化，也幾乎不溶于所有的溶劑，只在300℃以上稍溶于全烷烴（約0.1g/100g）。聚四氟乙烯不吸潮，不燃，對氧、紫外線(xiàn)均極穩定，所以具有優(yōu)異的耐候性。

電性能
聚四氟乙烯在較寬頻率范圍內的介電常數和介電損耗都很低，而且擊穿電壓、體積電阻率和耐電弧性都較高。

物理性質(zhì)
聚四氟乙烯的機械性質(zhì)較軟。具有非常低的表面能。

耐輻射性能
聚四氟乙烯的耐輻射性能較差（104拉德），受高能輻射后引起降解，高分子的電性能和力學(xué)性能均明顯下降。

耐高低溫性

對溫度的影響變化不大，溫域范圍廣，可使用溫度-190~260℃。

自潤滑性

具有塑料中最小的摩擦系數，是理想的無(wú)油潤滑材料。

表面不粘性

已知的固體材料都不能粘附在表面上，是一種表面能最小的固體材料。

耐大氣老化性，耐輻照性能和較低的滲透性

長(cháng)期暴露于大氣中，表面及性能保持不變。

不燃性

限氧指數在90以下

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聚四氟閥座（玻璃鋼F4乙丙）

聚四氟閥座（樹(shù)脂黑靠背F4乙丙）

氟橡膠閥座

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