Laser-markable halogen-free flame-retardant glass fiber reinforced alloy material and preparation method thereof

Abstract

The invention relates to a laser-markable halogen-free flame-retardant glass fiber reinforced alloy material and a preparation method thereof. The laser-markable halogen-free flame-retardant glass fiber reinforced alloy material comprises the following raw material components in percentage by weight: 31%-42% of PA6, 8%-21% of PPO, 8%-12% of a compound flame retardant, 2%-6% of a compatilizer, 2%-4% of a toughening agent, 0.4%-0.8% of a lubricant, 0.3%-0.6% of a compound antioxidant, 0.4%-0.8% of a laser additive and 20%-30% of alkali-free chopped fibers. The laser-markable halogen-free flame-retardant glass fiber reinforced alloy material has the beneficial effects that the GWIT and CTI values of a PA6 / PPO alloy are high, the flame retardant effect is good, the comprehensive performance is excellent, the laser marking (black-to-white) requirement can be met, and the material can be widely applied to products in the field of electronics such as low-voltage electronic capacitor shells, load circuit breakers and molded case circuit breakers, and has high GWIT, CTI and flame retardance; and meanwhile, due to the fact that a YAG laser marking device is used for marking, a white mark with obvious contrast can be formed on the dark plastic surface, and the bad phenomena that the plastic is degraded and damaged due to heating, the mark is fuzzy, and the marked font is yellow are avoided.

Description

technical field [0001] The invention discloses a laser-markable halogen-free flame-retardant glass fiber reinforced alloy material and a preparation method thereof, belonging to the technical field of plastic alloys. Background technique [0002] Polyamide is a mass-produced and applied polymer. Due to its special mechanical properties, solvent resistance, heat resistance, compatibility, etc., it is not only used in the fields of electronics, building materials, rail transit, and household appliances. , and for various other purposes. Among them, the most widely used polyamide types are PA6 (polycaprolactam) and PA66 (polyhexamethylene adipamide). In the application of engineering plastics, although PA6 cannot completely replace PA66, PA6 has higher cost performance. Through modification technologies such as flame retardancy, reinforcement, and toughening of PA6, the flame retardancy, CTI and GWIT properties of the material can be improved. Can be widely used in low-voltag...

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Problems solved by technology

[0005] For PA materials, the incident laser light is not strongly absorbed by itself, so under the irradiation of laser energy, the plastic is not easy to produce marks, but after the energy is increased, the imprint contrast on the surface of the material is insufficient or the imprint color is yellow, so it cannot be used. Meet the clearly marked requirements

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