Pestle Analysis Lab Report

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.1 Material Composition

The raw material mentioned above has to be taken into an appropriate ratio to compound the batch sample. Generally, to test the property change in the polymer by the influence of a filler/additive is done by processing several batches with different but gradual loading of the filler/additive.

Here, we have to test the properties of nano Calcium Carbonate in the polymer matrix of polypropylene. For this, 12 batches are prepared by using the different size of filler by loading it at 5%, 10%, 15% and 20% by ratio in the polymer matrix. Ideally a 5kg of composite is compounded to test and further research if required.

Hence, the material composition of batches of 5kg is done as follows:

weight sheet material 5% CaCO3 10% CaCO3 15% CaCO3 20% CaCO3 % wgt % wgt % wgt % wgt
PP 94.3 4715 89.3 4465 84.3 4215 79.3 3965
CaCO3 5 250 10 500 15 750 20
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For example, mixing of salt and flour can be done efficiently compared to mixing gravels and flour. One can understand the texture of mixing and the dispersion possible by this example.

Therefore, for uniform mixing of the polymer matrix and the nano filler the matrix of Polypropylene is reduced is powder form or in other words it is pulverised. The process of pulverising can be met by a high speed mixer, grinder or miller machines whichever is available and has the ability to reduce the PP to smallest size possible.

When pulverizing PP in the high speed mixer, due to the speed of blade certain increase in the temperature is observed with ends up agglomerating the polymer. Also the PP is hard by characteristics and hence it does not break at room temperature which requires more time to pulverize which causes

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