Study on Preparation of Ultra-High-Molecular-Weight Polyethylene Pipe of Good Thermal-Mechanical Properties Modified with Organo-Montmorillonite by Screw Extrusion
| Autor: | Rui Xu, Zhouchao Guo, Ping Xue |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Extrusion moulding
Materials science 02 engineering and technology 010402 general chemistry 01 natural sciences lcsh:Technology Article chemistry.chemical_compound Flexural strength Ultimate tensile strength Coupling (piping) General Materials Science Composite material ultra-high-molecular-weight polyethylene lcsh:Microscopy lcsh:QC120-168.85 Ultra-high-molecular-weight polyethylene Vicat softening point lcsh:QH201-278.5 lcsh:T screw extrusion modified pipe Polyethylene 021001 nanoscience & nanotechnology 0104 chemical sciences chemistry lcsh:TA1-2040 organo-montmorillonite Extrusion lcsh:Descriptive and experimental mechanics lcsh:Electrical engineering. Electronics. Nuclear engineering 0210 nano-technology lcsh:Engineering (General). Civil engineering (General) lcsh:TK1-9971 |
| Zdroj: | Materials, Vol 13, Iss 3342, p 3342 (2020) Materials Volume 13 Issue 15 |
| ISSN: | 1996-1944 |
| Popis: | The study of processing characteristic and property optimization of ultra-high-molecular-weight polyethylene (UHMWPE) pipe is increasingly performed, mainly focusing on difficulties in the melting process and poor thermal-mechanical properties after forming, which have limited the wider engineering application of UHMWPE pipe. In this study, organo-montmorillonite (OMMT)-modified UHMWPE pipe with good thermal-mechanical properties was prepared by screw extrusion molding. First, high-density polyethylene was subjected to fluidity modification so that the screw extrusion molding of UHMWPE pipe was feasible. Then, OMMT-modified UHMWPE pipes under different addition amounts of OMMT were innovatively prepared by extrusion. Furthermore, the effects of the addition amounts of the compatibilizer HDPE-g-MAH and the silane coupling agent &gamma (2,3-epoxy propoxy) propyl trimethoxy silane (KH560) on the thermal properties of OMMT-modified UHMWPE pipe were investigated for the first time. Compared with those of pure UHMWPE pipe, the Vicat softening temperature (from 128 to 135.2 ° C), thermal deformation temperature (from 84.4 to 133.1 ° C), bending strength (from 27.3 to 39.8 MPa), and tensile strength (from 20.8 to 25.1 MPa) of OMMT-modified UHMWPE pipe were greatly increased. OMMT-modified UHMWPE pipe with good thermal-mechanical properties was able to be prepared by extrusion for the first time. The compatibilizer method of HDPE-g-MAH was slightly more effective than the coupling agent method of KH560. |
| Databáze: | OpenAIRE |
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