The effect of the ratio on the elongation at break The effect of the combined dosage of accelerator DM/D and the ratio of S-SBR/BR on the elongation at break of the compound, the fixed ratio of S-SBR/BR, the elongation at break With the increase of accelerator DM/D dosage, it decreases almost uniformly. When the accelerator DM/D is combined with a fixed amount, the elongation at break varies considerably with the combined ratio of S-SBR/BR, but it can still be seen that there is a best value. Therefore, when the amount of filler is fixed, the amount of accelerator is the main factor affecting the elongation at break.
The effect of the combined ratio of carbon black/silica and S-SBR/BR on the elongation at break Contour map of the combined ratio of silica and S-SBR/BR 1.4/0.7 When the amount of accelerator is fixed, carbon black/silica is the main factor that affects the elongation at break. As the amount of silica increases, the elongation at break increases. The combined ratio of S-SBR/BR has little effect on the elongation at break. In summary, the accelerator DM/D has a great influence on the elongation at break, while the combined ratio of S-SBR/BR has little effect on the elongation at break.
Using the orthogonal rotation design method, it is possible to thoroughly and comprehensively characterize the influence of various factors in the rubber formula and their levels on the rubber performance. The amount of accelerator DM/D is constant, the amount of white carbon black and S-SBR increases, and the tear strength of the rubber compound is increased; the amount of white carbon black, accelerator, S-SBR increases or the amount of S-SBR, carbon black increases , Accelerator DM/D and the dosage of 1.2/0.6 can obtain high tensile strength. The increase in the amount of carbon black, accelerator and S-SBR is beneficial to increase the tensile stress of 300%; when the combined amount of accelerator DM/D is 1.4/0.7, the amount of white carbon black increases, and the elongation at break increases. Large, the combined ratio of S-SBR/BR has no significant effect on the elongation at break.
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