Fiber-reinforced composite material and method for manufacturing same
A composite material, fiber-reinforced technology, applied in electronic equipment, other household appliances, blades, etc., can solve problems such as brittle peeling, and achieve the effect of high elastic modulus and high strength
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Embodiment 1
[0119]
[0120] (Purpose)
[0121] Fabricate a fiber-reinforced composite material containing the silk moth as a reinforcing fiber, and verify its physical properties.
[0122] (method)
[0123] Long-fiber bundles of moth silk were used as reinforcing fibers, and ethylene-vinylacetate copolymer (EVA) resin was used as the polymer matrix.
[0124] The long fiber bundles of minomoth silk were prepared according to the method described in the specification of Japanese Patent Application No. 2017-110003. As the minion moth, the final instar larvae of the minion moth collected from an orchard in Tsukuba City, Ibaraki Prefecture were used. The approximately square metal can described in Example 1 of the specification of Japanese Patent Application No. 2017-110003 is used as a long-fiber production device of minomoth silk. Above the plate-like member corresponding to the side surface of the metal tank, there was a closed-loop linear road with a width of 1.7 mm and a circumferenc...
Embodiment 2
[0135]
[0136] (Purpose)
[0137] The silk moth was used as a reinforcing fiber, and a fiber-reinforced composite material was made using a polymer matrix different from that in Example 1, and its physical properties were verified.
[0138] (method)
[0139] The EVA resin used in Example 1 is a soft resin that can be extended several times. Therefore, in this embodiment, polystyrene resin (PS resin) (Eiken Chemical Co., Ltd.), which is less stretchable than EVA resin and has a breaking elongation of only about 5%, is used as a polymer matrix to prepare Fiber-reinforced composite material (BSF / PS composite material), its mechanical properties were verified by the same method as in Example 1.
[0140] The basic conditions are as in Example 1. However, the pressure pressing conditions are 10 MPa to 12 MPa at 150°C.
[0141] (result)
[0142] Table 2 shows the mechanical test results of BSF / PS composite material and PS resin alone.
[0143] Table 2
[0144]
[0145] A...
Embodiment 3
[0146]
[0147] (Purpose)
[0148] Physical properties of fiber-reinforced composite materials were verified when short fibers of the silk moth silk were used as reinforcing fibers.
[0149] (method)
[0150] Short fibers of the silk moth were used as reinforcing fibers, and polyvinylalcohol (PVA) (Uehara Chemical) was used as a polymer matrix.
[0151] The monofilaments of the moth silk were cut to a length of about 5 mm in the major axis, and were short-fiberized. Thereafter, the short fibers were dispersed in an aqueous PVA solution and molded on a slide glass to obtain a film as a BSF / PVA composite material. The fiber content is the mass fraction of the short fibers of the silkworm silk with respect to the total dry weight of the film. Slender test pieces were cut from the film for subsequent mechanical tests.
[0152] (result)
[0153] The modulus of elasticity of the BSF / PVA composite material with a fiber content of 3.74 wt% was 184.1 MPa, which was more than 10 ...
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Abstract
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