Solid content: Solid content
After drying under specified conditions, the solid content of the emulsion or coating accounts for the rest of the mass percentage of the total amount. In fact, the so-called "non-volatile "Solid content" is more accurate.
Solid content is a term commonly used in emulsion polymerization processes. For example, adding 30 grams of theoretical solid content to the monomer system, 70 grams of water, and 30% theoretical solids Content, if the monomer conversion rate is not high in theory and practice, the solid content is also different. For example, vinyl acetate has a low boiling point. You can take a certain mass of emulsion, add a little polymerization inhibitor, and then evaporate the solvent and unreacted monomers. , to determine the mass ratio before and after heating. There is no clear definition
High solid content emulsions are generally considered to have a high solid content in emulsions with a solid content greater than 60%, which is consistent with 50% or less Usually the solid content ratio of emulsions has high efficiency, low transportation cost, fast drying speed and low energy consumption, which has become the focus of many researchers.
The solid content not only includes film-forming substances, but also fillers and Additives.
In the field of solid content detection, the contradiction between measurement accuracy and measurement speed has not been resolved; in response to this situation, Shenzhen Fenxi Instrument Manufacturing Co., Ltd. provides a drying method structure An instrument for rapid determination of solid content. The solid content detector adopts the German HBM weighing system to ensure accurate weighing; the ring-shaped quartz tungsten halogen infrared heating source dries samples quickly; compared with the international oven heating method, the ring-shaped quartz tungsten halogen infrared heating can evenly and quickly dry samples at high temperatures. It is dry and the sample surface is not easily damaged. The test results are in good consistency with the national standard oven method and are replaceable. The detection efficiency is much higher than the oven method. With intelligent operation, it only takes a few minutes to complete the test for general samples. . The solid content detector has obtained national intellectual property protection (Patent No. 201420090168.1) and is a new type of rapid detection instrument.