Nylon 6 slice prepared by using waste fishing net and preparation method thereof

Abstract

The invention discloses a nylon 6 slice prepared by using a waste fishing net. A raw material of the nylon 6 slice comprises the following components in percentage by weight: 95 to 98 percent of the waste fishing net, 0.5 to 1.0 percent of chain extender, 1.0 to 3.0 percent of compound heat stabilizer and 0.5 to 1.0 percent of lubricant. The nylon 6 slice has mechanical properties and mobile processing performance equivalent to that of a PA6 fresh material slice, has a light color and fewer impurities, can partially or completely replace a nylon 6 fresh material slice to be used for spinning or modifying engineering plastics and other raw materials, reduces environmental pollutions, realizes the cyclic utilization of resources, and has great social effects and economic benefits.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a nylon 6 slice prepared by using waste fishing nets and a preparation method thereof. Background technique [0002] my country has a long coastline and many inland rivers and lakes. Fishing and aquaculture are very common. A large number of fishing nets are used every year, and many waste and rotten fishing nets are discarded. Fishing nets are basically made of nylon 6 after spinning. If discarded at will, they cannot be degraded in a short time, which brings great harm to the environment and aquatic animals and plants. [0003] Nylon 6 (referred to as PA6), which is polymerized from caprolactam, is the final product of the petroleum industry, and it is also a type of basic resin with the largest output, the most varieties, the widest range of uses, and excellent comprehensive performance among the five general-purpose engineering plastics. The molecular weight of nylon 6 for e...

AI Technical Summary

Problems solved by technology

Due to the long-term immersion of waste fishing nets in water, the molecular chains have been degraded and broken to varying degrees due to the effects of external sunlight, salt, microorganisms, etc. When the relative molecular weight is reduced to below 10,000, PA6 will lose its basic use as an engineering plastic. value

In addition, due to the special environment used in water, a large amount of impurities such as sediment, aquatic plants, and shells are usually adhered to the fishing net wire, and these impurities also bring many difficulties to the recovery and application of PA6.

Nylon 6 slices directly recovered without treatment have low molecular weight, many impurities, dark color, and the mechanical properties and appearance cannot meet the basic requirements for use.

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