Method for characterizing dispersity of insoluble sulfur in rubber composition
A rubber composition and dispersive technology, applied in the direction of analyzing materials, instruments, etc., can solve the problems of heavy workload, time-consuming, not representative of individuals, etc., and achieve the effect of short test cycle
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[0029] 1) Analyze the size of the insoluble sulfur particle raw material:
[0030] Three samples of IS raw materials from different manufacturers were selected, which are respectively referred to as sample 1, sample 2 and sample 3 in the present invention. For the samples from each manufacturer, select an insoluble sulfur sample group composed of multiple samples, without any treatment, and directly observe with SEM. Among them, the model of sample 1 is CrystexHDOT20, the model of sample 2 is HDOT20, and the model of sample 3 is HDOT20.
[0031] IS raw material SEM sample pretreatment: the sample is evenly distributed on the conductive adhesive, and the surface cannot be squeezed or otherwise damaged by tools such as tweezers. blown away.
[0032] Make SEM samples from IS raw materials: disperse a certain amount of insoluble sulfur particles on the conductive adhesive, fix the conductive adhesive on the sample holder, and observe the size and shape of the sample with SEM.
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