Manufacturing method of fiber reinforced plastic
A fiber-reinforced plastic and fiber-reinforced technology, used in non-woven fabrics, textiles and papermaking, coatings, etc., can solve the problems of large initial investment in molding equipment and limited component size, and achieve the effect of less restrictions and less initial investment.
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Embodiment 1
[0137] Formed by contact heating with image 3 The ply-decreasing prepreg laminate shown in (b) is a fiber-reinforced base material. On the lower surface of the fiber-reinforced base material 1, a plate heater serving as a uniform-temperature contact heating source 3 is provided, and a bag film 6 is arranged on the fiber-reinforced base material 1, and suction is performed by a vacuum pump. Only the lower surface is temperature-controlled, and the top is in indirect contact with the atmospheric pressure and normal temperature environment through the bag film 6 to form a cooling source.
[0138] Tc1 [° C.] shown in FIG. 4( b ) represents the control temperature of the lower surface plate heater. In addition, T 最大 , T 最小 Indicates the maximum and minimum temperature inside the substrate, C 最大 and C 最小 Indicates the maximum degree of curing and the minimum degree of curing in the substrate (the same applies hereinafter). The lower surface plate heater Tc1 in contact with th...
Embodiment 2
[0141] Formed by contact heating with image 3 The ply-decreasing prepreg laminate shown in (c) is a fiber-reinforced base material. The bag film 6 is arranged on the fiber-reinforced base material 1, and suction is performed by a vacuum pump. Two plate heaters serving as uniform temperature contact heating sources 3 are arranged on the upper surface and the lower surface of the fiber-reinforced base material to control the temperature of the upper surface and the lower surface respectively.
[0142] Tc1 [° C.] shown in FIG. 4( c ) represents the control temperature of the lower plate heater, and Tc2 [° C.] represents the control temperature of the upper plate heater. Both the lower surface plate heater Tc1 and the upper surface Tc2 in contact with the fiber-reinforced base material were heated from room temperature 24°C at a rate of 5.0°C / min, and the temperature was maintained after reaching 180°C. At 3500 seconds when the overshoot fell back, only the lower surface plate ...
Embodiment 3
[0145] Such as Figure 5 As shown in (b), a prepreg laminate having a thickness of 50 mm and a width of 300 mm, that is, a fiber-reinforced base material, was placed on a single-sided die made of aluminum with a thickness of 10 mm. The bag film 6 is arranged on the fiber reinforced base material 1, and suction is performed by a vacuum pump. Heating is carried out in an oven, and at the same time, a distributed temperature heating source 4 is pressed against an end portion of the fiber-reinforced base material 1 where a plurality of fiber discontinuities exist. As a result, thermal energy moves from the in-plane direction where the thermal conductivity is high at the end portion.
[0146] As shown in Figure 6(b), in order to avoid the adverse effect on the thermosetting resin composition caused by the overshoot of the heat of reaction, the oven was heated from room temperature 24 °C at 1.5 °C / min, and the temperature was maintained after reaching 130 °C (T 空气 ). Also, for th...
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