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long glass fiber enhance granules for injection mold 2021-05-21

Therefore, 10~25mm long glass fiber reinforced plastics (LGFPP) compared with ordinary 4~7mm short glass fiber reinforced plastics (GFPP) has higher strength, stiffness, toughness, as well as dimensional stability, low warpage advantages.In addition, long glass fiber reinforced polypropylene material does not produce obvious creep even at 100℃, and has better creep resistance than short glass fiber reinforced polypropylene.

thermoplastic granules for injection

In injection molding products, long glass fibers interlace into a three-dimensional network structure. Even after the burning of the polypropylene substrate, the long glass fiber network still forms a certain strength glass fiber skeleton, while the short glass fiber is generally formed into a non-strength fiber skeleton after the burning, as shown in Figure 2 for the comparison of glass fiber burning.This is mainly because the length-diameter ratio of the reinforcing fiber determines the reinforcing effect. The critical length-diameter ratio is L/D. The filler and short glass fiber with a critical length-diameter ratio less than 100 have no reinforcing effect, while the long glass fiber with a critical length-diameter ratio less than 100 has a reinforcing effect.

Compared with metal materials and thermosetting composite materials, LFRP has a low density, and the weight of the same component can be reduced by 20~50%.Long glass fiber plastics can provide designers with greater design flexibility, such as molding parts with complex shapes, integrating the number of parts used, saving mold costs (generally, the cost of long glass fiber plastic injection mold is about 20% of the cost of metal stamping mold).Reduce energy consumption (the energy consumption of long glass fiber plastic production is only 60~80% of steel products, 35~50% of aluminum products), simplify the assembly process.

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