Abstract
Wood–plastic composite (WPC) materials are mainly used as flooring in buildings or as structural load-bearing plates, and will undergo creep deformation during use, resulting in structural failure and safety problems. Therefore, this work adopted the orthogonal test method to carry out creep tests on wood–plastic composites. We used the range method and variance analysis method to process the creep data and analyze the influence of the load, temperature, and relative humidity on the creep strain in specimens of wood–plastic composites. The results showed that the creep strain of the WPC specimens changed significantly with a change in the load stress, while a change in relative humidity had no significant effect on the creep strain. When the relative humidity was increased from 55% to 65%, the creep strain increased by 0.03%, but when the temperature was increased from 30 °C to 35 °C, there was no significant difference in the creep strain. However, when the temperature was increased from 30 °C to 40 °C and from 35 °C to 40 °C, a significant difference in the creep strain of the WPC specimens was observed.
Highlights
Wood–plastic composite (WPC) is a recycled material that is mainly composed of biomass fibers and a certain proportion of plastic
The results showed that the creep resistance of WPCs was poor when the size was too small, and the creep resistance of WPCs improved with increased size and core number [17,18]
The results showed that the short-term flexural creep performance was strongly related to the stress level, and the creep velocity of WPC increased with increasing stress [19,20,21]
Summary
Wood–plastic composite (WPC) is a recycled material that is mainly composed of biomass fibers and a certain proportion of plastic. The orthogonal test method was adopted to carry out the creep test of the wood–plastic composites, and the range method and variance analysis method were used to process the creep data and analyze the influence of the load, temperature, and relative humidity on the creep strain of wood–plastic composites. These results were highly significant for guiding the production of WPCs and improving WPC quality
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