Investigation of the mechanical properties of films from a mixture of HDPE with LLDPE with the addition of chalk concentrate

O. I. Abramushkina, E. A. Romakhova, I. N. Tsapenko
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Abstract

The deformation-strength characteristics of films made from a mixture of HDPE and LLDPE modified with chalk were studied. It is shown that the introduction of a chalk concentrate of more than 16 wt.% (the content of chalk concentrate is 20 wt.%) has a negative effect on the strength and relative elongation at break of the composition of HDPE with LLDPE, as well as on the strength of the welded joint of polymer films. The strength of the films in the longitudinal and transverse directions significantly depends on the composition of the composition. The strength of the weld, obtained by ultrasonic welding, decreases sharply when the chalk content in the system is more than 16 wt.%. The introduction of more than 10 wt.% LLDPE into a HDPE-based chalk-filled composition is inadvisable..
掺有白垩精矿的高密度聚乙烯与低密度聚乙烯混合膜的力学性能研究
研究了用白垩改性HDPE和LLDPE混合制成的薄膜的变形强度特性。结果表明,白垩精矿掺量大于16 wt.%(白垩精矿含量为20 wt.%)会对HDPE - LLDPE复合材料的强度和断裂伸长率产生负面影响,同时也会对聚合物薄膜的焊接接头强度产生负面影响。薄膜在纵向和横向上的强度很大程度上取决于组合物的组成。当系统中白垩粉含量超过16%时,超声波焊接获得的焊缝强度急剧下降。引入超过10 wt.%的LLDPE到hdpe为基础的粉笔填充组合物是不可取的。
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