High-smoothness long-glass-fiber flame-retardant toughened polypropylene blend material and preparation method thereof

Abstract

The invention belongs to the technical field of high-polymer composite materials, and relates to a high-smoothness long-glass-fiber flame-retardant toughened polypropylene blend material and a preparation method thereof. The preparation method comprises the following steps: A. preparing the following components in parts by mass: 50-70 parts of polypropylene resin, 10-25 parts of synergic toughener master batch, 0.5-2.0 parts of chain extender, 2-5 parts of anti-floating fiber agent and 25-40 parts of main toughener master batch; B. blending: adding the components in the step A into an extruder, and blending to obtain a blend; and C. preparation: drawing the blend in the step B out of the head of an extruder, cooling, blow-drying, and granulating to obtain the high-smoothness long-glass-fiber flame-retardant toughened polypropylene blend material. The high-smoothness long-glass-fiber flame-retardant toughened polypropylene blend material is especially suitable for medium / high-end furniture supplies with higher requirements for product shape structure and appearance, cost, processibility and the like.

Description

technical field [0001] The invention belongs to the technical field of organic polymer composite materials, and relates to a high-gloss and clean long glass fiber flame-retardant and toughened polypropylene blend material and a preparation method thereof. Background technique [0002] Polypropylene is a thermoplastic resin with excellent mechanical properties and relatively moderate price, which is widely used in the field of furniture materials. At present, domestic factories generally use direct injection molding of unmodified polypropylene, but the product performance is poor. Although polypropylene furniture has good resistance to light, oil, and chemical solvents, it has poor hardness. It should prevent collisions and scratches by hard objects at the tip of a knife. At present, the main performance requirements of high-end furniture materials are 1) high strength and high toughness; 2) bright surface; 3) moderate price. Therefore, it is necessary to modify the propert...

AI Technical Summary

Problems solved by technology

However, polypropylene is a non-polar product, while glass fiber is a polar product due to the large amount of active functional groups on the surface, so the compatibility of the two-phase interface is not good

At the same time, if the glass fiber content is large (>20%), the glass fiber will be exposed on the surface of the composite material due to the poor coating of polypropylene, resulting in a large number of floating fibers in the material product, although it can be improved to a certain extent. The strength of the composite material, but the glass fiber will easily form phase separation or stress concentration (glass fiber agglomeration) during the processing, which will make the product surface rough and blooming, thus affecting the smoothness and beauty of the product, which limits the glass fiber polypropylene composite material. long-term application

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