Formula of high-elongation super-tough nylon 56 and preparation method thereof

Abstract

The invention discloses a formula of high-elongation super-tough nylon 56, which is prepared from 68 to 76 percent of PA56 resin, 0.2 to 0.5 percent of a coupling agent KH550, 23 to 28 percent of a toughening agent, 0 .2 to 0.5 percent of a lubricant, 0.1 to 0.3 percent of a release agent and 0.3 to 0.5 percent of an antioxidant. The invention further discloses a preparation method of the high-elongation super-tough nylon 56. The preparation method comprises the following steps: Step I: firstly putting the PA56 resin, the toughening agent and the coupling agent KH550 according to a configuredratio into a mixer for mixing and stirring for 1 minute; Step II, adding the antioxidant, the release agent and the lubricant in proportion into the stirred mixture in Step I, and mixing and stirringfor 2 minutes, and discharging the mixture; and Step III, putting the mixture obtained in Step II into a twin-screw extruder for processing. The high-elongation super-tough nylon 56 disclosed by the invention has an elongation at break up to 300 percent; a notched impact of a cantilever beam can reach 60 KJ / M2 at -23 DEG C, and the tensile strength is up to 65 MPa; and the high-elongation super-tough nylon 56 is mainly applied to engineering parts and anti-tearing materials used in a low-temperature environment.

Description

technical field [0001] The invention relates to the technical field of nylon 56 preparation, in particular to a formula and a preparation method of high-elongation super-tough nylon 56. Background technique [0002] Polyamide, referred to as PA, commonly known as nylon, is one of the most important materials in modern industry and has important uses in many fields such as military equipment, automobiles and textiles. At present, nylon 66 and nylon 6 are widely used in the industrialization and application of nylon fibers, and their raw materials are mostly dependent on petrochemical products, which greatly restricts the development of nylon 66 in my country. At present, nylon 56 is more produced in China, but the existing technology only solves the technical problems of nylon 56 fiber polymerization and spinning, and does not have high performance in the toughness of nylon 56, resulting in low elongation of nylon 56, thereby The product made of this nylon cannot have good t...

AI Technical Summary

Problems solved by technology

At present, nylon 66 and nylon 6 are widely used in the industrialization and application of nylon fibers. Their raw materials are mostly dependent on petrochemical products, which greatly restricts the development of nylon 66 in my country.

At present, nylon 56 is more produced in China, but the existing technology only solves the technical problems of nylon 56 fiber polymerization and spinning, and does not have high performance in the toughness of nylon 56, resulting in low elongation of nylon 56, thereby The products made of this nylon cannot have good toughness and ductility, which affects the use experience of the products

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