Similar property principle similarity coefficient

The effect of the flUer concentration was studied (up to 84% — in copolymer of butadience with acrylic acid) in the presence of 0-84% solid filler on the temperature dependence of parameters of mechanical dynamic properties. For the first time a principle was stated in that wodc to the effect that the filler influence m dso be described by the reduction method similar to temperature reduction. For this, use was made of an equation equivalent in its form to the WLF equation but with different numerical values of the constants Ci and C2. Its most generd result is the stress-strain representation in a twice-normalized state-by temperature and by concentration of the flUer. However, not all the parameters can be represented in the concentration-invariable form by the use of tl same method of filler concentration reduction. Specifically, the effect of the filter at the initial section of the stress-strain curve is greater than was predicted by the gemtal reduction method. The relative strain at rapture can also be represented in the concentration invariant from, if tiie vertical shift of the experimental curves is used in addition to tiie commm horizontal one. The author has proposed empirical formulas descrfliing the concentrational dependence of the reduction coefficient. 

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