The research and development of this material can not only ease people's demand for high-quality wood, but also realize the harmless comprehensive utilization of straw, killing two birds with one stone."Ningbo materials on February 28th, the Chinese academy of sciences researcher Zhu Jin team spread the good news, they use the plant fiber preparation such as straw stalks out of the "imitation wood composite materials, not only on the mechanical properties of the material close to the natural lumber, also not easy to warp, deformation, and crucially, many of its ingredients come from agriculture and forestry waste, very low cost.
China is facing a structural shortage of timber.In 2017, China produced more than 300 million cubic meters of artificial panels, 60 percent of which were imported.At the same time, more than 800 million tons of straw can be collected, of which only a few are effectively reused.Research and development "imitated wood" material, is to fundamentally solve the contradiction between wood production and demand.
According to the report, zhu jin's team of researchers used common polymer materials such as plastic and rubber as the matrix to wrap straw, reed, palm fiber and bamboo fiber, and finally obtained a plant fiber polymer composite material with wood mechanical properties.
"The high content of plant fiber guarantees the high strength of the composite material, while the irregular distribution of plant fiber guarantees the uniform mechanical properties of the material in any direction, which makes the imitation wood sawing, riveting, nailable, planing, very flexible processing."Zhu jin introduced.
How to collect them, how to break them efficiently and how to mix them with resin matrix are the difficulties in the field of plant fiber preparation and processing.After years of sustained research and development, zhu's team has teamed up with a shandong company to develop a high-speed blending device that can solve these problems in one step.In addition, through a series of formulation optimizations, the team has significantly improved the flexibility and processing fluidity of the composites, and through a pioneering step-by-step flame retardant scheme, the resulting high-filled plant fiber composites have achieved a v-0 flame retardant capability.
It is understood that the team has completed the overall process of "wood-like" materials, and has a certain scale of production and preparation capacity. Next, the team will explore the national market through the improvement of technology and equipment.
