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

A technology of thermoplastic resin and automotive interior panels, applied in the direction of superstructure sub-assembly, textiles and papermaking, layered products, etc., can solve the problem of not giving full play to the more direct and powerful help of the material preparation stage to the material molding stage, and corresponding Capacitance, stability is difficult to meet the requirements, can not meet the development needs and other problems, to achieve the effect of ensuring windability, convenient packaging and transportation, and solving interface compatibility problems

Active Publication Date: 2014-01-01
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Step 1: Grafting Modification of Hemp Fiber Surface

[0029] Dissolve maleic anhydride in xylene solvent as an esterification reagent, soak a certain amount of hemp fiber in the modification solution, and heat at 140°C for 4 hours. The esterified hemp fiber was then repeatedly washed with distilled water to remove unreacted maleic anhydride. Finally, heat and dry in an oven at 60°C.

[0030] Step Two: Mixing

[0031]Mix the various fibers required for the core layer and the surface layer separately. The amount of each fiber in the core layer is as follows: 15kg of basalt fiber, 25kg of modified hemp fiber, 17kg of polypropylene fiber, 25kg of polyester fiber, and 408018kg of hot-melt fiber to make a mixture; the amount of each fiber in the surface layer is as follows: 15kg of polyester fiber, 10kg of spandex fiber 15kg of polypropylene fiber and 408010kg of hot-melt fiber are mixed evenly to make a mixture.

[0032] Step 3: laying the net

[0033] Lay the mixed cor...

Embodiment 2

[0039] Mixing method of natural fiber / thermoplastic resin composite automotive interior panels:

[0040] The dosage of each fiber in the core layer is as follows: 20kg of basalt fiber, 20kg of modified brown fiber, 17kg of polypropylene fiber, 25kg of polyester fiber, and 408018kg of hot-melt fiber to make a mixture; the dosage of each fiber in the surface layer is as follows: 20kg of polyester fiber, 10kg of spandex fiber 12kg of polypropylene fiber and 40808kg of hot-melt fiber are mixed evenly to make a mixture.

[0041] The rest of the steps are the same as those in Example 1, and will not be described in detail.

Embodiment 3

[0043] Mixing method of natural fiber / thermoplastic resin composite automotive interior panels:

[0044] The dosage of each fiber in the core layer is as follows: 20kg of basalt fiber, modified hemp fiber, 20kg of brown fiber, 15kg of polypropylene fiber, 30kg of polyester fiber, and 408015kg of hot-melt fiber to make a mixture; the dosage of each fiber in the surface layer is as follows: polyester fiber 19kg, Mix 10kg of spandex fiber, 12kg of polypropylene fiber and 40809kg of hot-melt fiber evenly to make a mixture.

[0045] The rest of the steps are the same as those in Example 1, and will not be described in detail.

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R13/02B32B5/26D04H1/541
Inventor 贾玉玺董琪
Owner SHANDONG UNIV
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