Assessment of Color Degradation of Wood Plastic Composites in Outdoor Applications

2019 ◽  
Vol 887 ◽  
pp. 48-55
Author(s):  
Jose Vercher ◽  
Arturo Diaz ◽  
Maria Soriano ◽  
Carlos Lerma
Keyword(s):  
Sustainable Development ◽  
Building Materials ◽  
Wood Plastic Composites ◽  
Sustainable Building ◽  
Plastic Composites ◽  
Natural Wood ◽  
Color Degradation ◽  
Uv Lamp ◽  
Recycled Plastics ◽  
A Minor

Construction sector has consumed an important percentage of natural resources and generated much of the waste discharged into the environment in the last decades. This is the reason why the social consciousness has strongly grown towards sustainable development. Concepts such as recycle, reuse, reduce and energy saving are gaining importance in obtaining products under a clearly defined objective of a sustainable development. The revaluation of agroforestry waste has established itself as a solution to the problems associated with these wastes and, increasingly, is being incorporated into the manufacture of new materials. The Wood Plastic Composites (WPC’s) are an important group within these new sustainable building materials. WPC’s are obtained from recycled plastics and natural fibres waste. This kind of materials reduces the consumption of resources and the amount of waste. These materials have emerged to replace natural wood in some exterior applications, where the durability of natural wood is most damaged. Natural wood, in addition to the loss of color that suffers in exterior, has other disadvantages such as anisotropy and hygroscopicity. WPC's do not have these drawbacks. In this way, the WPC’s try to imitate the appearance of natural wood, with a good durability outdoors. Because of this, there are numerous companies that develop WPC products with different plastics and natural waste, with the aim of obtaining the best appearance and durability. In this paper, the color degradation of various WPC materials when exposed to ultraviolet (UV) radiation is evaluated. An artificial aging chamber with a fluorescent UV lamp and a colorimeter have been used to quantify the color parameters. Thus, conclusions are drawn on which plastics and residues achieve a minor alteration of color, an aspect highly appreciated in outdoor applications.

scholarly journals Preparation and Properties of Wood Plastic Composites with Desirable Features Using Poplar and Five Recyclable Plastic Wastes

2021 ◽  
Vol 11 (15) ◽  
pp. 6838
Author(s):  
Qinghan Yu ◽  
Yang Wang ◽  
Haoran Ye ◽  
Yequan Sheng ◽  
Yang Shi ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Flexural Strength ◽  
Hydroxyl Groups ◽  
Sustainable Utilization ◽  
Preparation Process ◽  
Hydrophobic Properties ◽  
Wood Plastic Composites ◽  
Plastic Composites ◽  
Plastic Wastes ◽  
Recycled Plastics

This study evaluated the mechanical and hydrophobic properties of wood plastic composites (WPC) prepared by the hot molding approach incorporating five different recycled plastics and poplar flour. The WPC showed excellent tensile strength (36.9 MPa) and flexural strength (44.7 MPa) associated with good hydrophobicity, and the excellent properties of WPC could be due to the application of hot pressing which improved the amount of hydroxyl groups and reduced the crystallinity of WPC. The WPC also revealed a strong and hydrostable structure and negligible emission of formaldehyde during the preparation process. Overall, the WPC could be used to substitute traditional wood-based panels as potential furniture material, hence achieving sustainable utilization of plastic wastes.

scholarly journals Influence of fibre and matrix characteristics on properties and durability of wood–plastic composites in outdoor applications

2018 ◽  
Vol 33 (4) ◽  
pp. 477-500 ◽  
Author(s):  
Jose Vercher ◽  
Vicent Fombuena ◽  
Arturo Diaz ◽  
Maria Soriano
Keyword(s):  
Mechanical Properties ◽  
Polyvinyl Chloride ◽  
Rice Husk ◽  
Environmental Issues ◽  
Wood Plastic Composites ◽  
Ageing Behaviour ◽  
General Terms ◽  
Plastic Composites ◽  
Chemical Agents ◽  
Recycled Plastics

The awareness of society on environmental issues has increased in recent years. This article focuses on the wood–plastic composites (WPCs), obtained from recycled plastics and natural fibres waste, and their application in architecture. In order to give some recommendations to architects regarding the choice of a WPC as an alternative to wood for uses in outdoor decking, a series of standardized physical, mechanical and chemical tests have been carried out on two commercial WPC materials: one with a polyvinyl chloride (PVC) – PVC matrix and rice husk filler and a second one with a polyethylene (PE) – PE matrix and pine wood reinforcement. Mechanical, thermal and ageing behaviour of these commercial WPC has been broadly studied. This research provides value information to find out which WPC material best support durability aspects, those that most concern in an architectural application of outdoor decking. In general terms, WPC developed by PVC matrix and rice husk as filler shown greater physical–mechanical properties, better resistance to chemical agents and greater resistance to ageing behaviour and changes in visual aspect.

scholarly journals Utilization of demolition wood and mineral wool wastes in wood-plastic composites

Detritus ◽  
2020 ◽  
pp. 19-25
Author(s):  
Petri Jetsu ◽  
Markku Vilkki ◽  
Ismo Tiihonen
Keyword(s):  
Mechanical Performance ◽  
Strength Properties ◽  
Mineral Wool ◽  
Construction And Demolition Waste ◽  
Waste Materials ◽  
Demolition Waste ◽  
Waste Wood ◽  
Wood Plastic Composites ◽  
Plastic Composites ◽  
A Minor

Wood and mineral wool fractions from demolished buildings were sorted into different categories and processed to the suitable grain size needed for the manufacturing of wood-plastic composites. Processed construction and demolition waste materials mixed with plastics and additives were extruded into hollow test bars using a conical rotary extruder. Test specimens needed for measurements were cut from test bars. The results showed that the mechanical performance of wood-plastic composites based on construction and demolition waste wood, and mineral wool was at a good level and comparable to commonly used wood-plastic composites in decking applications. The highest strength properties of wood-plastic composites were achieved with a plywood fraction and the lowest with materials containing a particle/fibre board fraction. The mechanical performance can be improved by utilizing mineral wool in the formulation of wood-plastic composites. A material mixture containing several wood fractions as well as mineral wool also gave good strength properties. Only a minor reduction in strength properties was measured when recycled plastic was utilized meaning that wood-plastic composites suitable for many types of applications can be produced entirely from recycled materials.

A preliminary study on the preparation of wood-plastic composites from urban wastes generated in Merida, Mexico with potential applications as building materials

2009 ◽  
Vol 28 (9) ◽  
pp. 838-847 ◽  
Author(s):  
Ricardo H. Cruz-Estrada ◽  
Gustavo E. Martínez-Tapia ◽  
Gonzalo Canché-Escamilla ◽  
Pedro I. González-Chí ◽  
Cesar Martín-Barrera ◽  
...  
Keyword(s):  
Building Materials ◽  
Wood Plastic Composites ◽  
Plastic Composites ◽  
Potential Applications ◽  
Preliminary Study

Research on Technology of Wood-Plastic Composites

2012 ◽  
Vol 630 ◽  
pp. 75-79
Author(s):  
Hua Yong Zhang ◽  
Xiao Jian Liu ◽  
Hai Yan Sun
Keyword(s):  
Raw Materials ◽  
Wood Fiber ◽  
Thermoplastic Resin ◽  
Excellent Performance ◽  
Wood Plastic Composites ◽  
Plastic Composites ◽  
Recycled Plastics

Wood-plastic composites were produced by heating, blending and extruding with recycled plastics and wood fiber as chief raw materials and some thermoplastic resin as the additive. The compounding formula and producing craft were researched and optimized. The influence of the ratio of wood fiber and additives was examined. Wood-plastics composites with excellent performance were produced.

Growth of housing sector in India - application of Cost-effective Construction Technologies to reduce Greenhouse Gas Emission

2019 ◽  
Author(s):  
Nilanjan Sengupta
Keyword(s):  
Greenhouse Gas ◽  
Building Materials ◽  
Greenhouse Gas Emission ◽  
High Growth ◽  
Cost Effective ◽  
Construction Technology ◽  
Gas Emission ◽  
Sustainable Building ◽  
Skilled Manpower ◽  
Energy Consuming

Building construction sector can play a major role in reducing Greenhouse Gas emission through application of technologies aimed at reduction of use of building materials. Energy consumed during production of building materials and components plays a crucial role in creating environmental pollution. India is witnessing high growth in urban and rural housing, which needs more production of building materials. Permanent or semi-permanent type buildings which consume easily available conventional materials like brick, reinforced cement concrete etc. can be made Economic and Eco-friendly by lowering use of energy-consuming building materials through Cost-effective Construction Technologies. Buildings with Cost-effective Construction Technology can be designed within the parameters of the existing Indian Standards. Awareness generation among the users, proper technical and architectural guidance and easy availability of skilled manpower are of utmost importance for promotion of cost-effective technologies in India and to make them as the most acceptable case of sustainable building technologies both in terms of cost and environment.

scholarly journals Alien Wood Species as a Resource for Wood-Plastic Composites

2020 ◽  
Vol 11 (1) ◽  
pp. 44
Author(s):  
Sergej Medved ◽  
Daša Krapež Tomec ◽  
Angela Balzano ◽  
Maks Merela
Keyword(s):  
Wood Species ◽  
Dimensional Stability ◽  
Laser Scanning ◽  
Large Scale ◽  
Laser Scanning Microscopy ◽  
Raw Material ◽  
Confocal Laser ◽  
Alien Plant ◽  
Wood Plastic Composites ◽  
Plastic Composites

Since invasive alien species are one of the main causes of biodiversity loss in the region and thus of changes in ecosystem services, it is important to find the best possible solution for their removal from nature and the best practice for their usability. The aim of the study was to investigate their properties as components of wood-plastic composites and to investigate the properties of the wood-plastic composites produced. The overall objective was to test the potential of available alien plant species as raw material for the manufacture of products. This would contribute to sustainability and give them a better chance of ending their life cycle. One of the possible solutions on a large scale is to use alien wood species for the production of wood plastic composites (WPC). Five invasive alien hardwood species have been used in combination with polyethylene powder (PE) and maleic anhydride grafted polyethylene (MAPE) to produce various flat pressed WPC boards. Microstructural analyses (confocal laser scanning microscopy and scanning electron microscopy) and mechanical tests (flexural strength, tensile strength) were performed. Furthermore, measurements of density, thickness swelling, water absorption and dimensional stability during heating and cooling were carried out. Comparisons were made between the properties of six WPC boards (five alien wood species and mixed boards). The results showed that the differences between different invasive alien wood species were less obvious in mechanical properties, while the differences in sorption properties and dimensional stability were more significant. The analyses of the WPC structure showed a good penetration of the polymer into the lumens of the wood cells and a fine internal structure without voids. These are crucial conditions to obtain a good, mechanically strong and water-resistant material.

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