A high-efficiency enhanced halogen-free flame-retardant functional masterbatch for nylon 6 direct injection molding and its preparation method

Abstract

The invention belongs to the technical field of plastic modification and processing, and in particular relates to a high-efficiency enhanced halogen-free flame-retardant functional masterbatch for direct injection molding of nylon 6 and a preparation method thereof; the functional masterbatch is produced by combining two masterbatches A and B The mass percentage composition of A masterbatch is as follows: glass fiber 50.0~70.0wt.%, high flow nylon 6 resin 20.0~35.0wt.%, maleic anhydride grafted elastic ionomer 3.0~10.0wt.%, star Nylon 6 resin 3.0-6.0wt.%, antioxidant 0.1-0.3wt.%; compared with traditional plastic functional masterbatches, the functional masterbatch prepared by the present invention avoids the enhanced halogen-free flame-retardant nylon 6 modification system During the processing, the mutual loss of modification performance is caused by the mutual shearing and abrasion of glass fiber and flame retardant, and at the same time, the problem of mismatching processing temperature of the above two modification systems is solved, and the modification performance of the two is significantly enhanced; the masterbatch It is easy to disperse and process, and can be directly mixed with nylon 6 resin according to the ratio and then injection molded, and can achieve excellent modification effect.

Description

technical field

[0001] The invention belongs to the technical field of plastic modification and processing, and in particular relates to a high-efficiency enhanced halogen-free flame-retardant functional masterbatch which can be directly applied to injection molding processing of nylon 6 products and a preparation method thereof. Background technique

[0002] Using twin-screw extruder to implement melt blending is a traditional method for plastic modification. Using the high-efficiency and excellent mixing performance of co-rotating twin-screw extruders, thermoplastics and various modified additives can be continuously melt-blended and extruded After granulation, the prepared modified special material will be used again for injection or extrusion processing to form various products. This technical route not only effectively improves the physical and mechanical properties of plastic products such as strength, toughness, stiffness, creep resistance, and flexure resistance, but...

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