Automobile inner decorative board made of composite materials of natural fibers/thermoplastic resin, and mixing method of composite materials of natural fiber/thermoplastic resin

Abstract

The invention discloses an automobile inner decorative board made of composite materials of natural fibers / thermoplastic resin, and a mixing method of the composite materials of the natural fiber / the thermoplastic resin. The automobile inner decorative board is composed of at least a core layer and a surface layer. The surface layer is composed of the following main raw materials, by weight, 5-35 parts of spandex fibers, 25-45 parts of polyester fibers, 15-25 parts of low-melting-point and skin-core type composite fibers, and 15-35 parts of high-melting-point hot melting fibers, wherein the difference between the melting point of the high-melting-point hot melting fiber and the melting point of the low-melting-point and skin-core type composite fibers is larger than 20 DEG C. The core layer is composed of the following main raw materials, by weight, 5-35 parts of basalt fibers and / or glass fibers, 5-35 parts of the natural plant fibers with modified surfaces, 15-35 parts of polyester fibers, 15-25 parts of low-melting-point and skin-core type composite fibers, and 15-25 parts of high-melting-point fibers. The automobile inner decorative board and the mixing method achieve integration of manufacturing and forming of the composite materials, and the material manufacturing stage can assist the material forming stage directly and effectively.

Description

technical field [0001] The invention relates to an automobile interior panel, in particular to an automobile interior panel of natural fiber / thermoplastic resin composite material and a mixing method, belonging to the technical field of composite materials. Background technique [0002] In recent years, the automobile industry has developed rapidly. According to the data released by the world-renowned American automobile industry magazine Wardsauto, the total number of all kinds of cars in use in the world has exceeded 1 billion as of August 16, 2011. The huge demand for automotive interior panels has prompted people to pay more attention to issues such as its quality, economy, environmental protection, and recyclability. Currently, composite substrates used in the manufacture of automotive interior panels are gradually being replaced by natural fiber composites. [0003] The patent document (publication number: CN102145553A) discloses an environmentally friendly and recyc...

AI Technical Summary

Problems solved by technology

However, both of the above two patents reflect a common shortcoming: the early stage of composite material preparation at room temperature and the later stage of interior trim panel heating and forming are separated, and there is a lack of integrated planning for composite material preparation and molding processing. More immediate and powerful assistance in the material forming phase

[0011] During the heating and pressing process of the layer material, the fiber mat will undergo deformation such as bending, twisting, stretching, and compression. At the same time, it is difficult to meet the requirements for compatibility and stability, and it cannot meet the requirements of the continuous strip surface layer and the surface layer composite fiber mat. Requirements for the development of pre-forming and subsequent progressive thermoforming and surface / surface composite processes