Qualitative analysis method for latex doped substances
A qualitative analysis and latex technology, applied in the field of qualitative analysis of latex doping substances, can solve the problems affecting the fair trade of natural rubber latex and rubber product quality, increase the proportion of latex, etc., and achieve easy popularization, accurate qualitative and simple operation Effect
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[0024] principle:
[0025] Add a certain amount of ammonia to the quantitatively weighed latex sample, put the sample into a thermal radiation pneumatic latex rapid dryer or other baking box, under the action of high temperature, a large amount of ammonia and water vapor evaporate, and the rubber molecules A polymerization reaction also occurs, forming a large number of upwardly displaced bubbles. After the latex sample is dried, a multi-layered thin film is formed.
[0026] Qualitative analysis of doped particulate matter. Because the doped particulate matter (such as starch, double ash powder, lime powder, etc.) cannot undergo the above reaction, it is concentrated on the bottom of the beaker. After drying, the adhesive film appears on the upper layer, while the doped particulate matter precipitates in large chunks on the bottom of the cup. The layering phenomenon is obvious, which can be intuitively qualitative.
[0027] Qualitative for doped soluble substances. Because the dop...
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