A kind of bio-based polyethylene/starch blend modified blown film material and preparation method thereof
A blending modification and bio-based technology, which is applied in the field of bio-based polyethylene/starch blended modified blown film materials and its preparation, can solve the problem of mechanical performance degradation, low bio-based content of starch/polyethylene plastic materials, unfavorable Problems such as popularization and application, to achieve the effect of lowering melt index, improving production performance and reducing pollution
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Embodiment 1-5
[0030] Example 1-5 Components of polyethylene / thermoplastic starch blended modified blown film material and its preparation
[0031] Examples 1-5, the components of polyethylene / thermoplastic starch blended modified blown film materials are shown in the table below.
[0032] Table 1
[0033]
[0034]
[0035] Embodiment 1-5, the preparation method of polyethylene / thermoplastic starch blended modified blown film material, the steps are as follows:
[0036] S1. First add starch into the reaction kettle, set the temperature to 150°C, turn on the stirring shaft, rotate at 800rpm / min, and take 30min to control the moisture content of the starch within 0.5%, and then add plasticizer through the solid feeding port at the upper end of the reaction kettle , The accelerator continued to mix for 25 minutes to obtain thermoplastic starch;
[0037]S2. Then add bio-based low-density polyethylene, bio-based high-density polyethylene, and ethylene ethyl acrylate to the reactor and mix...
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