Effect of melt temperature on product properties of injection-molded high-density polyethylene

2021 ◽  
Author(s):  
İdris Karagöz ◽  
Özlem Tuna
Keyword(s):  
High Density Polyethylene ◽  
High Density ◽  
Melt Temperature ◽  
Injection Molded

Suppressing the skin–core structure in injection-molded HDPE parts via the combination of pre-shear and UHMWPE

RSC Advances ◽  
2015 ◽  
Vol 5 (103) ◽  
pp. 84483-84491 ◽  
Author(s):  
Zhen Wang ◽  
Guoqiang Zheng ◽  
Bo Wang ◽  
Kun Dai ◽  
John Zhanhu Guo ◽  
...  
Keyword(s):  
Tensile Strength ◽  
High Density Polyethylene ◽  
High Density ◽  
Core Structure ◽  
Remarkable Increase ◽  
Synergetic Effects ◽  
Injection Molded

Skin–core structure of a injection-molded high density polyethylene (HDPE) part is largely relieved due to the synergetic effects of pre-shear and UHMWPE, leading to a remarkable increase of tensile strength.

scholarly journals Manufacturing and Characterization of Environmentally Friendly Wood Plastic Composites Using Pinecone as a Filler into a Bio-Based High-Density Polyethylene Matrix

Polymers ◽  
2021 ◽  
Vol 13 (24) ◽  
pp. 4462
Author(s):  
Maria del Carmen Morcillo ◽  
Ramón Tejada ◽  
Diego Lascano ◽  
Daniel Garcia-Garcia ◽  
David Garcia-Sanoguera
Keyword(s):  
High Density Polyethylene ◽  
Filler Content ◽  
High Density ◽  
Polyethylene Matrix ◽  
Wood Plastic Composites ◽  
Matrix Interaction ◽  
Plastic Composites ◽  
Wide Range ◽  
Injection Molded

The use of wood plastic composites (WPC) is growing very rapidly in recent years, in addition, the use of plastics of renewable origin is increasingly implemented because it allows to reduce the carbon footprint. In this context, this work reports on the development of composites of bio-based high density polyethylene (BioHDPE) with different contents of pinecone (5, 10, and 30 wt.%). The blends were produced by extrusion and injection-molded processes. With the objective of improving the properties of the materials, a compatibilizer has been used, namely polyethylene grafted with maleic anhydride (PE-g-MA 2 phr). The effect of the compatibilizer in the blend with 5 wt.% has been compared with the same blend without compatibilization. Mechanical, thermal, morphological, colorimetric, and wettability properties have been analyzed for each blend. The results showed that the compatibilizer improved the filler–matrix interaction, increasing the ductile mechanical properties in terms of elongation and tensile strength. Regarding thermal properties, the compatibilizer increased thermal stability and improved the behavior of the materials against moisture. In general, the pinecone materials obtained exhibited reddish-brown colors, allowing their use as wood plastic composites with a wide range of properties depending on the filler content in the blend.

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