A kind of reinforced natural fiber composite material and preparation method thereof
A natural fiber and composite material technology, applied in the direction of layered products, can solve problems such as poor stiffness and strength, complex preparation process, etc., achieve strong external impact load capacity, high modulus and strength, and improve mechanical properties.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0023] The reinforced natural fiber composite material of the present invention comprises a natural fiber laminate 1 and reinforcing ribs 2 laid on its surface; It is formed by lamination and solidification; the reinforcement rib 2 is formed by curing a natural fiber net woven by twisted natural fiber yarn and resin glue; the material of the natural fiber cloth is the same as that of the natural fiber net. figure 1 A schematic cross-sectional view showing surface-laid reinforcing ribs of a natural fiber laminate, figure 2 It is a top view of the composite material with reinforcing ribs laid on the surface.
[0024] The natural fibers can be flax fibers, ramie fibers, cotton, kapok fibers or other natural fibers in the prior art, and also can be mixed fibers composed of multiple fibers.
[0025] The natural fiber net is woven by a knotless process, and the grid shape of the natural fiber net can be rhombus, rectangle or honeycomb, respectively as Figure 3-5 As shown, other ...
Embodiment 2
[0032] The structure of composite material is identical with embodiment 1, and its preparation method is as follows: natural fiber is example with ramie fiber, and resin glue is example with phenolic resin, and the preparation method of reinforced natural fiber composite material comprises the following steps:
[0033] (1) Cut the ramie fiber prepreg as required, prepare the phenolic resin solution, and prepare the ramie fiber prepreg according to [(0 / 90)(±45)(0 / 90)(±45)(0 / 90 )] Lay on the mold layer by layer in sequence, add phenolic resin glue, make the prepreg infiltrate the glue, and scrape the phenolic resin glue;
[0034] (2) The ramie fiber web is criss-cross woven into the twisted ramie fiber yarn by the non-network process, such as Figure 4 As shown, the grid shape of the fiber web is rectangular, and then the ramie fiber web is paved on the upper surface of the ramie fiber prepreg obtained in step (1), and the phenolic resin glue is scraped after straightening out, ...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More