Fiber-reinforced polymer matrix material based on interface response and preparation method and application thereof
A polymer matrix and fiber reinforced technology, applied in the field of composite materials, can solve the problems of the small damage of the polymer matrix cannot be detected in time, the sensor manufacturing process is cumbersome, and the supporting equipment is complex and bulky. easy-to-get effect
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Embodiment 1
[0037] Using 1.5 g of polyoxyethylene stearate as a dispersant, disperse 1 g of multi-walled carbon nanotubes in 100 g of water by ultrasonication for 120 minutes at a power of 300 W, and prepare a water with a mass fraction of 1.0 wt % of multi-walled carbon nanotubes For the dispersion liquid, the mass ratio of multi-walled carbon nanotubes to polyoxyethylene stearate is 1:1.5.
[0038] The cellulose fiber with a diameter of 20 microns was immersed in the multi-walled carbon nanotube dispersion for 5 minutes, then taken out and air-dried for 30 minutes, and this operation was repeated 5 times to obtain a semiconductor fiber.
[0039] The prepared single semiconductor fiber was axially fixed in the center of the model in a cuboid groove (length 4 cm, width 1 cm, height 0.1 cm) along its length, and polydimethylsiloxane (polydimethylsiloxane) was injected into the model. 1 g of base siloxane, 0.1 g of curing agent, the mass ratio of polydimethylsiloxane to curing agent is 10:1...
Embodiment 2
[0042] Using 0.75 g sodium dodecylsulfonate as a dispersant, ultrasonically 120 minutes at a power of 500W, disperse 0.5 g graphene in 100 g water, and prepare a graphene aqueous dispersion with a mass fraction of 0.5 wt%. The mass ratio to sodium dodecylsulfonate is 1:1.5.
[0043] The cellulose fiber with a diameter of 20 microns was immersed in the graphene dispersion for 5 minutes, then taken out and air-dried for 30 minutes, and this operation was repeated 5 times to obtain a semiconductor fiber.
[0044] The prepared single semiconductor fiber was axially fixed in the center of the model in a cuboid groove (length 4 cm, width 1 cm, height 0.1 cm) along its length, and polydimethylsiloxane (polydimethylsiloxane) was injected into the model. 1 g of base siloxane, 0.1 g of curing agent, the mass ratio of polydimethylsiloxane to curing agent is 10:1) to fill the groove, and curing at 50 °C for 24 hours to obtain a fiber-reinforced polymer material. The two-electrode method ...
Embodiment 3
[0047] Using 1.8 g of polyoxyethylene stearate as a dispersant, 1.2 g of multi-walled carbon nanotubes were dispersed in 100 g of water by ultrasonication at a power of 500 W for 120 minutes, and a mass fraction of 1.2 wt% of multi-walled carbon nanotubes in water was prepared. For the dispersion liquid, the mass ratio of multi-walled carbon nanotubes to polyoxyethylene stearate is 1:1.5.
[0048] The glass fiber with a diameter of 60 microns was immersed in the multi-walled carbon nanotube dispersion solution for 5 minutes, then taken out and air-dried for 30 minutes, and this operation was repeated 10 times to obtain a semiconductor fiber.
[0049] Fix the prepared single semiconductor fiber axially along the length in the center of the model in a cuboid groove (length 4 cm, width 1 cm, height 0.1 cm), inject epoxy resin into the model (epoxy resin 0.9 g, cured 0.3 g of epoxy resin and curing agent (the mass ratio of epoxy resin and curing agent is 3:1) was used to fill the ...
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