北京麥(mai)迪森是Apiezon中國區代理商(shang)，提(ti)供阿(a)佩佐Apiezon全(quan)系(xi)(xi)列產(chan)品，型號齊全(quan)，購(gou)買請聯(lian)系(xi)(xi)15301310116（微信同號）

問：打開的Apiezon真空潤(run)滑脂的保質期是多長時間？

答：Apiezon真空(kong)潤(run)滑(hua)脂復雜(za)的(de)(de)化(hua)學結構賦予(yu)它(ta)們強大的(de)(de)“吸(xi)雜(za)”特(te)(te)性(xing)(xing)，這意味著它(ta)們很容易吸(xi)收空(kong)氣(qi)中(zhong)的(de)(de)蒸(zheng)氣(qi)，特(te)(te)別是水和其他(ta)碳(tan)氫(qing)化(hua)合物。如果(guo)揮(hui)發性(xing)(xing)蒸(zheng)氣(qi)被吸(xi)收，那么潤(run)滑(hua)脂將(jiang)失去其優異的(de)(de)蒸(zheng)氣(qi)壓特(te)(te)性(xing)(xing)，直到這些(xie)污染物被脫氣(qi)。

這就是我(wo)們將潤滑脂包裝在“防蒸汽”鋁管(guan)中的(de)(de)原因(yin)。由于(yu)(yu)我(wo)們無法控制潤滑脂打(da)開后(hou)(hou)的(de)(de)使(shi)(shi)用(yong)情況，因(yin)此我(wo)們無法提供產品(pin)打(da)開后(hou)(hou)的(de)(de)保質期。然而，實際(ji)上，如果在使(shi)(shi)用(yong)后(hou)(hou)立即(ji)蓋上蓋并且(qie)它們不暴(bao)露于(yu)(yu)揮發(fa)物，那么較長的(de)(de)使(shi)(shi)用(yong)壽命應該不成(cheng)問題。

除了吸收揮發物外(wai)，產品很(hen)穩定，長期(qi)來看不會(hui)發生其他變化。Apiezon PFPE 501基于全氟(fu)聚(ju)醚，因此具有高度(du)惰性，并且比碳氫化合物潤滑脂更不易吸收空氣中的蒸汽。

Q: What is the shelf life of an opened Apiezon container?

A: The complex chemical structure of Apiezon greases gives them strong ‘gettering’ properties, this means that they will readily absorb airborne vapours particularly water, and other hydrocarbons. If volatile vapours are absorbed then the greases will lose their excellent vapour pressure characteristics until these contaminants have been outgassed.

This is why we pack the greases in ‘vapour-proof’ aluminium tubes. As we have no control over the use of the greases once they have been opened we cannot quote a shelf life for the products after opening. Practically, however, if care is taken in re-capping the tubes immediately after use and they are not exposed to volatiles then a long service life should not be a problem.

Apart from absorption of volatiles the products are stable and no other changes would be anticipated in the long term. Apiezon PFPE 501 is perfluoropolyether-based and hence is highly inert and less likely to absorb airborne vapours than the hydrocarbon greases.

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