Thermal Properties and Flammability of Wood Plastic Composites

2021 ◽  
pp. 161-178
Author(s):  
Elammaran Jayamani ◽  
Vannethasrriy Balakrishnan
Keyword(s):  
Thermal Properties ◽  
Wood Plastic Composites ◽  
Plastic Composites

Mechanical and thermal properties of wood-plastic composites reinforced with hexagonal boron nitride

2013 ◽  
Vol 35 (1) ◽  
pp. 194-200 ◽  
Author(s):  
Nadir Ayrilmis ◽  
Turker Dundar ◽  
Alperen Kaymakci ◽  
Ferhat Ozdemir ◽  
Jin Heon Kwon
Keyword(s):  
Thermal Properties ◽  
Boron Nitride ◽  
Hexagonal Boron Nitride ◽  
Mechanical And Thermal Properties ◽  
Wood Plastic Composites ◽  
Plastic Composites

Study of Wood Plastic Composites on Mechanical and Thermal Properties after Immersed into Water

2014 ◽  
Vol 1004-1005 ◽  
pp. 497-500
Author(s):  
Wang Wang Yu ◽  
Dong Xue
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Thermal Properties ◽  
High Density Polyethylene ◽  
Nucleating Agent ◽  
Mechanical And Thermal Properties ◽  
Wood Plastic Composites ◽  
Plastic Composites ◽  
Before And After ◽  
Negative Effect

In this study, silvergrass (SV) reinforced high density polyethylene (HDPE) composites were prepared. The effects of slivergrass fibers (SV) content on the mechanical properties, crystalline properties of wood plastic composites (WPCs) before and after water absorption were investigated. It was found that compared with the untreated WPCs after immersed into water, the tensile strength of PMDI treated composites were higher. Silvergrass can be the nucleating agent with treated by PMDI. The Xc of PMDI treated WPCs after immersed into water was also increased. However, this improved Xc has negative effect on mechanical properties.

scholarly journals The Effect of Varying the Amount of Short Hemp Fibers on Mechanical and Thermal Properties of Wood–Plastic Composites from Biobased Polyethylene Processed by Injection Molding

Polymers ◽  
2021 ◽  
Vol 14 (1) ◽  
pp. 138
Author(s):  
Celia Dolçà ◽  
Eduardo Fages ◽  
Eloi Gonga ◽  
David Garcia-Sanoguera ◽  
Rafael Balart ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Injection Molding ◽  
Mechanical Performance ◽  
Natural Fibers ◽  
Mechanical And Thermal Properties ◽  
Standard Samples ◽  
Wood Plastic Composites ◽  
Hemp Fibers ◽  
Plastic Composites ◽  
Twin Screw

Biobased HDPE (bioHDPE) was melt-compounded with different percentages (2.5 to 40.0 wt.%) of short hemp fibers (HF) as a natural reinforcement to obtain environmentally friendly wood plastic composites (WPC). These WPC were melt-compounded using a twin-screw extrusion and shaped into standard samples by injection molding. To improve the poor compatibility between the high non-polar BioHDPE matrix and the highly hydrophilic lignocellulosic fibers, a malleated copolymer, namely, polyethylene-graft-maleic anhydride (PE-g-MA), was used. The addition of short hemp fibers provided a remarkable increase in the stiffness that, in combination with PE-g-MA, led to good mechanical performance. In particular, 40 wt.% HF drastically increased the Young’s modulus and impact strength of BioHDPE, reaching values of 5275 MPa and 3.6 kJ/m2, respectively, which are very interesting values compared to neat bioHDPE of 826 MPa and 2.0 kJ/m2. These results were corroborated by dynamic mechanical thermal analysis (DMTA) results, which revealed a clear increasing tendency on stiffness with increasing the fiber loading over the whole temperature range. The crystal structure was not altered by the introduction of the natural fibers as could be seen in the XRD patterns in which mainly the heights of the main peaks changed, and only small peaks associated with the presence of the fiber appeared. Analysis of the thermal properties of the composites showed that no differences in melting temperature occurred and the non-isothermal crystallization process was satisfactorily described from the combined Avrami and Ozawa model. As for the thermal degradation, the introduction of HF resulted in the polymer degradation taking place at a higher temperature. As for the change in color of the injected samples, it was observed that the increase in fiber generated a clear modification in the final shades of the pieces, reaching colors very similar to dark woods for percentages higher than 20% HF. Finally, the incorporation of an increasing percentage of fibers also increased water absorption due to its lignocellulosic nature in a linear way, which drastically improved the polarity of the composite

Effects of chemical treatments of hybrid fillers on the physical and thermal properties of wood plastic composites

2010 ◽  
Vol 41 (10) ◽  
pp. 1491-1497 ◽  
Author(s):  
Jae Gyoung Gwon ◽  
Sun Young Lee ◽  
Sang Jin Chun ◽  
Geum Hyun Doh ◽  
Jung Hyeun Kim
Keyword(s):  
Thermal Properties ◽  
Wood Plastic Composites ◽  
Chemical Treatments ◽  
Plastic Composites ◽  
Hybrid Fillers

The effect of mineral fillers on the thermal properties of wood-plastic composites

2012 ◽  
Vol 7 (2) ◽  
pp. 107-114 ◽  
Author(s):  
Ossi Martikka ◽  
Tiina Huuhilo ◽  
Svetlana Butylina ◽  
Timo Kärki
Keyword(s):  
Thermal Properties ◽  
Wood Plastic Composites ◽  
Plastic Composites ◽  
Mineral Fillers

scholarly journals Effects of filler type and content on the mechanical, morphological, and thermal properties of waste casting polyamide 6 (W-PA6G)-based wood plastic composites

BioResources ◽  
2020 ◽  
Vol 16 (1) ◽  
pp. 655-668
Author(s):  
Belgin Şeker Hirçin ◽  
Hüseyin Yörür ◽  
Fatih Mengeloğlu
Keyword(s):  
Thermal Properties ◽  
Wood Flour ◽  
Crystalline Polymer ◽  
Polyamide 6 ◽  
Polymeric Matrix ◽  
Melt Temperature ◽  
Wood Plastic Composites ◽  
Plastic Composites ◽  
Lignocellulosic Filler ◽  
Butyl Benzene

Cast polyamide 6 (PA6G), trade name Castamide, is a semi-crystalline polymer widely used in the engineering plastics industry. There is a need to recycle valuable waste (W)-PA6G generated during part manufacturing of this polymer (approximately 30%). This study attempts to utilize W-PA6G in the manufacture of wood-plastic composites as a polymeric matrix. The effect of lignocellulosic filler type (FT) and filler content (FC) on the mechanical, morphological, and thermal properties of W-PA6G-based composites were investigated. During manufacturing, N-butyl benzene sulfonamide (N-BBSA) and lithium chloride (LiCl) were utilized as a plasticizer and a melt temperature-lowering salt, respectively. The rice husk (RH) and Uludağ fir wood flour (WF) filled W-PA6G-based composites were successfully manufactured using a combination of extrusion and injection molding. Compared to RH filled composites, WF filled composites provided better tensile and flexural properties (both strength and modulus) at 20% and 30% filler contents. Morphological study showed the nonhomogeneous distribution of fillers in the polymeric matrix. Lignocellulosic filler resulted in reduced melting temperature and crystallinity of W-PA6G-based composites. This reduction was more pronounced in RH filled composites.

Effects of PMDI Treatments on Thermal Properties of Silvergrass Reinforced High Density Polyethylene Composites

2013 ◽  
Vol 423-426 ◽  
pp. 84-88
Author(s):  
Dong Xue ◽  
Wang Wang Yu ◽  
Qin Liu ◽  
Lu Jing ◽  
Xue Jing Liu ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Thermal Properties ◽  
High Density Polyethylene ◽  
Nucleating Agent ◽  
High Density ◽  
Wood Plastic Composites ◽  
Plastic Composites ◽  
Methylene Diphenyl Diisocyanate ◽  
Thermal Stability Of ◽  
Polyethylene Composites

In this study, silvergrass (SV) reinforced high density polyethylene (HDPE) composites were prepared. The effects of polymeric methylene diphenyl diisocyanate (PMDI), slivergrass fibers (SV) content on the thermal, crystalline properties of wood plastic composites (WPCs) were investigated. It was found that Compared with the untreated WPCs, the thermal stability of the composites after incorporation of PMDI treated SV fibers was significantly improved. Moreover, the results show that with PMDI treated composites, SV was an effective heterogeneous nucleating agent.

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