The hottest natural fiber composite new environmen

2022-07-23
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Natural fiber composite new environment-friendly recycled building material

natural fiber is a renewable resource. In recent years, facing the great demand of environment-friendly and resource recycling, natural fiber composites as building materials have attracted great attention of unsaturated polyester resin industry

natural fiber is low in cost, rich in resources and renewable, does not pollute the environmental balance circuit and maintains pressure. Roorkee of the Architectural Research Institute systematically studied the potential advantages of sisal and jute fibers in solving the problem of moisture absorption. The composites made of natural fiber and unsaturated polyester/epoxy resin were tested under different temperature and humidity conditions and different atmospheric environments. The results show that different kinds of composite products, such as laminates/wall panels, doors, roof sheets, windows, model casting composites, can be replaced by these natural fiber products. Compared with the existing Indian standard technical specifications, these products have good applicability and are an optional and environmentally friendly natural material. Natural fiber composite materials such as plates, doors and windows have been mass produced and put on the market

what is the effect of surface treatment on the properties of unsaturated polyester resin biocomposites? Biological composites are often made of non-woven felt and unsaturated polyester resin. The volume fraction of hemp fiber takes the terminal demand as the leading number and is optimized through the mechanical property test

the four surface treatment methods of industrialized hemp fiber are alkali treatment, silylation, punching forging and acrylonitrile treatment. The researchers measured the bending strength, tensile strength, impact strength, elastic modulus, technical parameters of tensile helmet impact resistance testing machine, and the tensile modulus, storage modulus, loss coefficient and loss angle of wal series microcomputer controlled horizontal tensile testing machine, and compared the performance of all composite materials. The results showed that the mechanical and thermal properties of these biomaterials were improved after surface treatment. The properties of the bio - composites and the alkali - free glass fiber felt composites were compared. In order to achieve the balance of various properties, composite materials prepared from glass fiber and industrial hemp were produced. Geeta Mehta et al. Studied a new biological composite sheet molding compound that can be applied to low-cost house panels. A new type of biological composite sheet molded panel (bcsmcp) was prepared by using the manufacturing technology of bcsmcp. This technology is based on the preparation method of sheet molding compound (SMC), which can realize mass continuous production and is easy to industrialization

during the experiment, they adopted a unique fiber dispersion method to prepare low-cost biological composite materials, which can be used to produce all kinds of panels for housing construction and transportation. In the experiment, different mechanical and thermodynamic properties of molded samples were tested according to ASTM procedures. Biological composite materials are prepared from different natural fibers, such as large blue stem grass, jute and industrial hemp. By changing the quality of these different natural fibers and focusing on inspection and adjustment, various biological composite materials can be obtained through bcsmcp method. It is a promising technology to use glass fiber to enhance the properties of polyester biological composites

in recent years, due to the sharp rise in the prices of main raw materials such as styrene, unsaturated polyester resin is facing great cost pressure. Although the product price is also rising, it seems difficult to follow up synchronously. High cost has a great impact on low-end products, and the benefits of unsaturated polyester resin industry have declined. Facing the severe situation, many countries have increased their efforts in research and development, developed a variety of low-cost, environment-friendly composite materials, and continuously expanded their application fields

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