Temperature sealant

Features This product is made of nickel salt, complexing agents, suppression of gray, buffering agents, dispersing agents, surface active agent compound formed. Compared with normal sealers have the following advantages: a good closure performance, especially for thick film sealing; a wide range of technology, the bath is easy to control, good stability; no fluorine meet the environmental requirements, but also to avoid fluorine harm to human body; within the normal range of technology, transparent profiles after blocking bright, high hardness. Slot allocation method and process parameters: 2.1 with bath method: 先向 tank plus water (pure water better) down to the required level line about 500-1000mm, then adding the liquid part with stirring state A2, and then added to dissolve the solid parts A1. Amount is calculated as follows. The best water to the required level. Stir. PH measured and adjusted to a predetermined value. LL-ZF07: 5.0g \ L process parameters: Ni2 + 0.8 ~ 1.2g / l PH 5.5 ~ 6.5 50 ~ 65 ℃ temperature and process management add 1 bath process parameters under normal circumstances: Ni2 + 0.8 ~ 1.2g / l pH 5.5 ~ 6.5 temperature 50 ~ 65 ℃. 2, according to the results of tests to determine the amount of the bath. Under normal circumstances each ton of feed consumed about 1.2 ~ 1.6kg. 3, the production process of controlling the pH at 5.5 to 6.5, the pH adjustment is too high with dilute acetic acid, dilute sodium tetraborate is too low (or dilute ammonia) solution to adjust the pH. 4, the production should pay attention to temperature fluctuations, closed General failure at temperatures below 40 ℃, 65 ℃ temperature higher than the surface profile appears "closed China"; consumption of about 1.0 ~ 1.5kg / t. Bath detection methods Imbibe 10 triangular bath in 250ml beaker, add 50ml water, 10ml (pH = 10) chloramines buffer, a small amount of 1% murexide shake. With 0.01 mol / EDTA standard solution titration of L to the solution from yellow to purple is the end, note the consumption volume V. Nickel content (g / L) = 5.869 * V * C where V EDTA standard solution consumed volume in ml; ml CEDTA molar concentration of the standard solution; mol / L