1. The oil absorption rate test will ultrafine aluminum hydroxide powder according to take 10 g dry sample, placed in a beaker, burette and castor oil, gently, with a glass rod with castor oil sample uniform infiltration briquetting shape calculated per 100 g aluminum hydroxide adsorption amount of castor oil, oil absorption rate for the super-fine aluminum hydroxide powder through the surface modification of aluminum hydroxide powder, oil absorption rate will appear a certain degree of change such as silane coupling agent modified ultrafine aluminum hydroxide powder, oil absorption rate will decline 10%
2. SEM testBefore and after the modification of ultrafine aluminum hydroxide powder morphology testing equipment used by electronic microscope scan and by electron microscopy (sem) can be found inside the dispersion of the modified powder in matrix is better than unmodified products
3. The test USES the Fourier infrared spectrometer (FTIR) of infrared spectrometry, analysis on the surface of the product molecules such as using methyl vinyl silane wet surface modification of aluminum hydroxide powder, infrared spectrum can be determined through
4 vinyl Vi and Si content determination of products performance will be modified and unmodified ultrafine aluminium hydroxide powder made products for cable indicators such as oxygen index5. Activation index sodium stearate titanate was wet modified, hydrophobic silane dry modified ultrafine aluminum hydroxide powder, the activation index can be used to evaluate the modification effect;However, hydrophilic silane was modified by dry method, and the ultrafine aluminum hydroxide powder modified by silane wet method would sink in water, so the modification effect could not be evaluated by activation index, and the accurate evaluation method was infrared spectroscopy.
Post time: Apr-03-2020