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Preparation method of jute fiber reinforced polylactic acid composite material

A composite material and jute fiber technology, which is applied in the field of composite material manufacturing, can solve the problems of poor cross-section hydrophobicity, etc., and achieve the effect of strong bonding force, remarkable reinforcement effect, stable and easy control of process parameters

Inactive Publication Date: 2017-09-01
SHAOXING UNIVERSITY
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

This is because the fiber will be interrupted when it is compounded with polylactic acid, and the hydrophobicity of the cross section is poor

Method used

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  • Preparation method of jute fiber reinforced polylactic acid composite material
  • Preparation method of jute fiber reinforced polylactic acid composite material
  • Preparation method of jute fiber reinforced polylactic acid composite material

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Embodiment Construction

[0051] A kind of preparation method of jute fiber reinforced polylactic acid composite material of the present invention is characterized in that, comprises the following steps:

[0052] (1) Fiber crushing:

[0053]The bunched jute fibers are pulverized by a pulverizer. The effects of pulverization in different steps on fiber hygroscopicity and compatibility with PLA interface are shown in Table 1 and Figure 1-2 shown.

[0054] Table 1. The effect of different treatment methods on the hygroscopicity of fibers.

[0055]

[0056] As shown in Table 1: the hygroscopicity of the fiber treated by method 2 is significantly lower than that of the fiber treated by method 1. This is because the silica sol modification mainly occurs on the surface of the fiber, and after modification, the ends of the pulverized fiber still do not have hydrophobicity.

[0057] like figure 1 ‐2, to detect the impact of pulverization on the interfacial compatibility between fiber and PLA, figure 1...

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Abstract

The invention discloses a preparation method of a jute fiber reinforced polylactic acid composite material. The method is characterized by comprising the following steps: pulverizing fibers, scouring, carrying out silicon dioxide sol treatment, and preparing a modified jute fiber reinforced polylactic acid composite material. According to the method disclosed by the invention, the fibers are pulverized and then are modified, so that uniform scouring is facilitated; meanwhile, the production of hydrophilic cross sections caused by interruption during mixed granulation of the fibers and polylactic acid can be effectively reduced, so that the dispersibility and the interface compatibility of the fibers in the polylactic acid are improved; through silicon dioxide sol surface modification treatment, a rough hydrophobic surface is obtained; therefore, the hydrophobic surface and a polylactic acid (PLA) interface have good compatibility, and a good mechanical nail-anchor effect can be produced, thereby improving the interface bond strength.

Description

Technical field: [0001] The invention belongs to the field of composite material manufacturing, and in particular relates to a preparation method of a modified hemp fiber polylactic acid composite material. Background technique: [0002] Fiber-reinforced composite materials are widely used in aerospace, national defense, transportation, sports and other fields due to their excellent properties such as small specific gravity, high specific strength and high specific modulus. In recent years, with the continuous improvement of people's awareness of environmental protection and the depletion of petrochemical resources, the disadvantages of traditional artificial fiber (such as glass fiber, aramid and carbon fiber, etc.) reinforced composite materials that use petrochemical resources as raw materials have become increasingly apparent. Plant fiber is a biodegradable renewable resource, which is gradually replacing man-made fiber as the main reinforcement material of polymer matri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L97/02C08J5/06D06M11/79D06M101/06
CPCC08L67/04C08J5/06C08J2367/04C08J2497/02C08L2205/16D06M11/79D06M2101/06C08L97/02
Inventor 王维明温作强董爱学
Owner SHAOXING UNIVERSITY
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