Fiber-reinforced plastic and process for production thereof

A technology of fiber reinforced plastics and manufacturing methods, which is applied in thin material processing, other household appliances, transportation and packaging, etc. It can solve the problems of reduced mechanical properties of molded products, uneven distribution of reinforcing fibers, and uneven orientation, so as to improve rigidity and Excellent strength and mechanical properties, high specific modulus of elasticity

Active Publication Date: 2009-08-26
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] However, SMC or BMC has the following problems: due to the inevitable occurrence of uneven distribution and uneven orientation of reinforcing fibers in its manufacturing process, the mechanical properties of molded products are reduced , or the deviation of its physical property value becomes larger
[0015]Therefore, no fiber-reinforced plastic with protrusions that can be easily molded and has excellent mechanical properties has not been found so far.

Method used

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  • Fiber-reinforced plastic and process for production thereof
  • Fiber-reinforced plastic and process for production thereof
  • Fiber-reinforced plastic and process for production thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0148] By the method of making the above prepreg, prepare Figure 6 A unidirectional prepreg sheet 11 is shown. Figure 6 In the unidirectional prepreg sheet 11, the arrangement direction (fiber length direction) of the plurality of reinforcing fibers in the unidirectional prepreg sheet 11 is indicated by the arrow symbol 9 ( Figure 6 The up and down direction in ) indicates; the direction perpendicular to the arrangement direction of the reinforcing fibers (fiber orthogonal direction) is indicated by the arrow symbol 10 ( Figure 6 in the left and right direction) indicates. The unidirectional prepreg sheet 11 is continuously inserted in the direction perpendicular to the fibers using an automatic shearing machine. Figure 6 The equally spaced and regular cuts 12 are shown. exist Figure 6Here, the width a of each incision is 10 mm, the interval (pitch) b between the incisions in the fiber length direction, that is, the cut length of the reinforcing fiber is 30 mm, and t...

Embodiment 2

[0155] In addition to using the position of the groove for forming the raised part of the upper mold to Figure 9 Except for the upper die 13B of the cross-shaped grooves 14B1 and 14B2 shown, a molded body (plate-shaped body) was produced in the same manner as in Example 1.

[0156] The thickness 1t of the plate-shaped part of the obtained plate-shaped body was 2.0 mm, and the reinforcing fiber was filled to the front end of the flange. When the cross-section of the flange was observed, it was as follows: figure 1 As shown, it was confirmed that a laminated structure was formed in the flange, and the reinforcing fibers in the laminated structure continued from the reinforcing fibers in the laminated structure of the plate-shaped part, and the 8 layers of the flange were formed as having a shape along the flange. , that is, layers of shapes corresponding to both side surfaces and the upper surface of the flange exist.

[0157] The results of the three-point bending test showed...

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Abstract

The invention provides a fiber-reinforced plate-like plastic having a plate and a protrusion rising on the plate, wherein the plate and the protrusion each contain a laminated structure composed of plural reinforcing fiber sheets which each comprise many fibers of 10 to 100 mm in fiber length arranged in a fixed direction and at least two of the layers constituting the laminated structure are different in the direction of arrangement of reinforcing fibers and wherein at least part of the reingorcing fibers extend continuously from the plate to the protrusion and at least one of the layers constituting the laminated structure of the protrusion has a shape similar to the shape of the protrusion; and a process for the production of fiber-reinforced plastic which comprises cutting a unidirectional prepreg sheet composed of many reinforcing fibers arranged in a fixed direction and a matrix resin into prepreg base material sheets with the above fiber length, laminating the prepreg base material sheets with the directions of arrangement of reinforcing fibers of the base material sheets being different from each other to form a prepreg laminate, and heating and pressure-molding this laminate in a mold provided with a recess for forming the production.

Description

technical field [0001] The present invention relates to a fiber-reinforced plastic, which is a plate-shaped body having a plate-shaped portion and a raised portion protruding from at least one side of the plate-shaped portion, and a method for producing the same. It is formed of a plurality of reinforcing fibers and a matrix resin integrated with the plurality of reinforcing fibers. [0002] As a typical example of the above-mentioned plate-shaped body having a protrusion, there is a plate-shaped body having a rib or a boss. The plate-shaped body is widely used as a structural member. Examples of such structural members include those used in transportation machines such as automobiles, sports equipment such as bicycles, and the like. Background technique [0003] Fiber-reinforced plastics composed of reinforcing fibers and matrix resins have high specific strength and specific elastic modulus, excellent mechanical properties, and high-performance properties such as weather...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B5/28B29C43/02B29C70/06C08J5/24B29K105/08
CPCB29L2031/003B32B5/12B29C70/222B29K2105/0854C08J5/042B29C43/003B32B1/00C08J5/24B32B5/28B32B5/26B32B3/30B32B2250/20B32B2250/40B32B2260/023B32B2260/046B32B2262/106B32B2307/516B32B2307/54Y10T428/24612Y10T428/24Y10T428/24174Y10T428/249939C08J5/243B29D99/0014B29C70/462B29C70/30B29C70/12B29C70/081B29C43/02B29C70/06
Inventor 山内雅浩武田一朗和田原英辅北野彰彦
Owner TORAY IND INC
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