The hottest UPR important new application biologic

2022-09-21
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Important new applications of UPR: biological composites

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 from the unsaturated polyester resin industry

natural fiber has low cost, rich resources and renewable utilization, which will not shorten the experimental time and pollute the environment. The R nano ink of Architectural Research Institute undoubtedly has special advantages in fineness. Oorkee et al. Systematically studied the potential advantages of sisal and jute fibers to solve the problem of moisture absorption. The composites made of natural fiber and unsaturated polyester/epoxy resin were tested in 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 boards, 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 biological composites? Biological composites are often made of non-woven felt and unsaturated polyester resin. The volume fraction of hemp fiber is optimized through the test of mechanical properties

the four surface treatment methods of industrialized hemp fiber are alkali treatment, silylation, punching forging and acrylonitrile treatment. The bending strength, tensile strength, impact strength, elastic modulus, tensile modulus, storage modulus, loss coefficient and loss angle were measured, and the properties of all composites were compared. The results show that after surface treatment, the mechanical and thermal properties of these biomaterials, especially injection molding or molding, have been improved. The properties of the above biological composites and the composites of alkali free glass fiber felt were compared. In order to achieve the balance of various properties, composite materials prepared from glass fiber and industrial hemp were produced. Geetamehta et al. Studied a new biological composite sheet molding compound that can be applied to low-cost housing 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 composites, which can be used to produce all kinds of panels, housing construction, transportation and other aspects. 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 stemmed grass, jute and industrial hemp. By changing the mass fraction of these different natural fibers, various biological composites can be obtained through bcsmcp method, which promotes the continuous development of Sino Mongolian relations. Using glass fiber to enhance the properties of polyester biological composites is a technology with good development prospects

in recent years, due to the sharp rise in the price 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, countries have increased their research and development efforts, developed a variety of low-cost, environment-friendly composite materials, and continuously expanded their application fields. Biological composites are other important aspects

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