Impact-resistant, heat-resistant and antibacterial polylactic acid composition and preparation method thereof
A polylactic acid and impact-resistant technology, which is applied in the field of polymer material modification, can solve the problems of high brittleness, poor heat resistance, and poor light resistance of PLA materials, and achieve good compatibility, improved brittleness, and improved heat resistance.
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Embodiment 1~3
[0035] Embodiment 1~3: adopt PLA as base material, by adding a small amount of TPU or TPEE as impact-resistant resin, adding glass fiber and organic montmorillonite as heat-resistant filler, adding nano-titanium dioxide and silver ion exchanger compound as antibacterial agent, 770 and UV326 are added as light stabilizers, and other components are detailed in the example data in Table 2. From the test results of Examples 1 to 3 in Table 3, it can be found that the prepared polylactic acid composition material has significantly improved IZOD notched impact strength and heat distortion temperature, and its antibacterial performance can reach Class I. Xenon lamp / ultraviolet lamp There is no yellowing phenomenon in aging, and it has the characteristics of impact resistance, heat resistance, antibacterial and light aging resistance.
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