下載次數(shù)：209次 瀏覽次數(shù)：229次發(fā)布時(shí)間：2015-10-28 11:43PR-1428 Class A is a low adhesion sealant.
工作溫度范圍從-65°F（-54℃）至250°F（121℃），間歇性偏移高達(dá)275°F（135℃下）。材料是專為檢修門密封膠或制造點(diǎn)膠墊圈（工廠檢驗(yàn)計(jì)劃）
PR-1428 A類是由兩部分組成，二氧化錳固化，聚硫化合物。未固化的材料是適合應(yīng)用刷的厚度可達(dá)25密耳。它常用飛機(jī)基材有著良好的附著力，在室溫下固化形成有彈性的密封膠。
It has a service temperature range from -65°F (-54°C) to 250°F (121°C), with intermittent excursions up to 275°F (135°C). The material is designed for use as an access door sealant or in the fabrication of form-in-place (FIP) gaskets.
PR-1428 Class A is a two-part, manganese dioxide cured, polysulfide compound. The uncured material is suitable for application by brush in thickness up to 25 mils. It cures at room temperature to form a removable seal to common aircraft substrates.
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