Preparation method of fiber metal laminate and fiber metal laminate
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A technology of fiber metal laminates, applied in the field of fiber metal laminates and fiber metal laminates, can solve the problems of long manufacturing process time, possibility limitation, stability problems, etc., and achieve weight reduction and uniform distribution of tensile stress , low cost effect
Inactive Publication Date: 2017-08-01
HUNAN UNIV
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Problems solved by technology
The use of high-strength aluminum alloys allows the wall thickness of structural components to be reduced. However, once a strict minimum wall thickness is required, designers are faced with stability problems. Therefore, the possibility of high-strength metal materials as lightweight components is limited.
The use of fiber-reinforced plastic composites to replace conventional structural materials achieves a large weight saving, however, due to longer manufacturing process times and high material prices, this replacement is only limited to expensive vehicles
Method used
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Embodiment 1
[0027] Such as figure 1 As shown, the fiber metal laminate preparation method of the present embodiment includes the following steps:
[0028] S1, smear release wax / release agent on the mold in hot press;
[0029] S2. Place one layer of metal sheet, at least one layer of interface film, at least two layers of fiber prepreg fabric, at least one layer of interface film, and one layer of metal sheet in sequence in the mold;
[0030] S3. Set the process parameters of the hot press and start the hot press. After the mold in the hot press reaches the preset temperature, heat preservation is carried out, and the pressure is maintained at the preset temperature, and finally cooled at the preset cooling rate The fiber metal laminate was obtained.
[0031] In this embodiment, the composite molding of the fiber prepreg tape and the metal sheet is realized by means of a hot press using hot molding, so that the surface of the product is smooth and flat without warping and has high bendin...
Embodiment 2
[0039] As a convertible implementation, the difference between this example and Example 1 is that in this example, the preset temperature is set to 220°C, the holding time is set to 7min, and the holding pressure is set to 0.7MPa, the holding time is set to 7min, and the preset cooling rate is set to 10°C / min.
[0040] In this embodiment, preferably, the shape of the glass fiber reinforced polypropylene prepreg fabric is twill 2 / 2.
Embodiment 3
[0042] As a convertible implementation, the difference between this example and Example 1 is that in this example, the preset temperature is set to 160°C, the holding time is set to 10min, and the holding pressure is set to 1MPa, the holding time is set to 0.5min, and the preset cooling rate is set to 40°C / min.
[0043] In this embodiment, preferably, the shape of the glass fiber reinforced polypropylene prepreg fabric is twill 2 / 2.
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Abstract
The invention discloses a preparation method of a fiber metal laminate, which comprises the following steps of: coating a die in a hot press with mould release wax/a mould release agent; sequentially placing a layer of metal sheet, at least one layer of interface thin film, at least two layers of fiber prepreg tape fabrics, at least one layer of interface thin film and one layer of metal sheet in the die; setting process parameters of the hot press and starting the hot press, carrying out heat preservation after a temperature of the die in the hot press reaches a preset temperature, carrying out pressure maintaining at the preset temperature, and finally, carrying out cooling at a preset cooling rate to obtain the fiber metal laminate. Composite molding of the fiber prepreg tape fabrics and the metal sheets is implemented by the hot press through adopting a hot die-pressing method, so that a workpiece is smooth and flat in surface and has high mechanical performance, and compared with a steel workpiece with the same thickness, the workpiece is greatly reduced in weight; the mould release agent or the mould release wax is brushed, and release cloth is laid, so that the formed composite material is easy to demould; in comparison with a pure composite material, the fiber metal laminate is low in cost and more superior in performance.
Description
technical field [0001] The invention relates to the field of composite materials, in particular to a method for preparing a fiber metal laminate and the fiber metal laminate. Background technique [0002] The number of automobiles in China is expected to reach 200 million by 2020. Exhaust emissions from automobiles are a major source of air pollution. A 10% weight reduction of fuel vehicles will reduce fuel consumption and CO2 emissions by 7% and 13%, respectively. So it is an inevitable trend to realize the lightweight of automobiles. At present, the automobile body is made of aluminum alloy and high-strength steel. The density of high-strength steel is 7.8g / cm3, the tensile strength is 340~2100MPa, and the specific strength is 0.04~0.27; the density of high-strength aluminum alloy is 2.7g / cm3, and the tensile strength The strength is 144~650MPa, and the specific strength is 0.05~0.23. The density of E-glass fiber in the glass fiber reinforced composite material is 2.54g / ...
Claims
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Application Information
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