Novel layered material composite long glass fiber reinforced polypropylene composite material and preparation method thereof
A technology of layered materials and composite materials, applied in the field of composite materials, can solve the problems of limited development of processing and forming properties, and achieve the effects of increased interlayer shear strength, increased impregnation residence time, and enhanced impregnation effect
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[0026] A kind of novel laminated material composite long glass fiber reinforced polypropylene composite material, its preparation method comprises the following steps:
[0027] S1, using ethanol as a solution, prepare the coupling agent into a dilution solution with a mass fraction of 0.5-1.0%, then fully impregnate the glass fiber, disperse the glass fiber evenly, and finally dry it at 60-80°C for use;
[0028] S2, mixing and stirring the lamellar material, polypropylene and antioxidant at high speed in proportion;
[0029] S3, the sheet-like material, polypropylene and treated long glass fiber are mixed in a banbury mixer, the glass fiber is covered and impregnated by the molten modified polypropylene resin, and the mixture after banbury is vulcanized on a flat plate Pressed into sheets on the machine, and the sheets are made into samples of standard shape and size.
[0030] S2 sheet material, polypropylene and antioxidant are mixed and stirred at a high speed in a ratio of...
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[0036] Example: use ethanol as a solution, prepare the coupling agent into a dilution solution with a mass fraction of 0.5-1.0%, then fully impregnate the glass fiber, disperse the glass fiber evenly, and finally dry it at 60-80°C for later use; The lamellar material, polypropylene and antioxidant are mixed and stirred at a high speed in a ratio of 10:15:1; the lamellar material, polypropylene and the treated long glass fiber are internally kneaded in an internal mixer, and the glass fiber is melted Modified polypropylene resin melt coating impregnation, the impregnation process of molten polypropylene on glass fiber is Points can be earned: In the formula, t-the time required to completely impregnate the fiber bundle; Z-the distance of fiber immersion; K-the permeability of the fiber bundle; μ-melt viscosity; P-applied pressure;
[0037] Permeability K of molten resin to fiber radial direction T satisfy: In the formula, C 1 , V fmax Determined according to the arrange...
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