A kind of nylon masterbatch suitable for low-temperature nylon cable ties and its preparation method and application

Abstract

The invention discloses a nylon masterbatch suitable for low-temperature nylon cable ties and its preparation method and application. In terms of weight percentage, its raw materials include: nylon 6 58-85%; toughening agent 10-30%; Oxidizing agent 0.1-2.5%; Lubricant 2-7.5%; Nucleating agent 0.1-2%; Relative sulfuric acid viscosity of nylon 6 is 2.3-3.2; Preparation method: Weigh each raw material according to the formula, mix, extrude and granulate, and dry , made; and low-temperature nylon cable ties made of the above-mentioned nylon masterbatch; the nylon masterbatch of the present invention has a fast molding speed, and a small amount of nylon masterbatch and nylon base material can be mixed and injected during injection molding to make nylon cable ties , to avoid the defect that most of the nylon base materials need to be heat-processed twice, which not only endows the nylon cable tie with excellent low temperature resistance, but also has excellent mechanical properties.

Description

technical field [0001] The invention belongs to the technical field of polymer materials and processing, and in particular relates to a nylon masterbatch suitable for low-temperature nylon cable ties, a preparation method and application thereof. Background technique [0002] Cable ties are a kind of wire and cable accessories. The low-temperature cable ties are very light and strong. They are mainly used to bundle items, and they can also withstand low temperatures during use. For many special places Very practical. At present, the popular low-temperature cable ties on the market are mainly nylon cable ties. Size, during use, customers do not need to measure the size again, and can use it directly, which can significantly reduce the workload during use; moreover, the service life of low-temperature cable ties is also very long, and many production companies Will choose to use cable ties. Especially in recent years, the application of nylon cable ties in construction and ...

AI Technical Summary

Problems solved by technology

The disadvantages of this technology are: the amount of elastomer used is large and the cost is high; moreover, the elastomer is prone to yellowing at the production temperature of the cable tie, and the product color is mainly black; the use of a large amount of elastomer reduces the release force of the cable tie

This patent achieves better fluidity and low temperature resistance of the overall material through the combination of a toughening agent and a surface brightener. However, the mechanical properties of this nylon cable tie are reduced, and the yellowness index increases (easy to yellow). Manufacturing Increased costs

The applicant found that the reason for the decline in the physical and mechanical properties of the nylon cable tie and the yellowing of the cable tie is that the nylon raw material contained in the cable tie needs to be melted and extruded for one thermal processing, and then injection molding is required when it is made into a product. The impact of the secondary thermal processing is that the nylon base material will undergo partial thermal degradation or hydrolytic degradation in the system after two thermal processings, which will not only reduce the viscosity of nylon, but also lead to the deterioration of the physical and mechanical properties of nylon products. The yellow index of the product increases, and the manufacturing cost increases

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