Nanometer antiflaming polyamide 66 (PA66) composite material and production method thereof

Abstract

The invention relates to a nanometer antiflaming polyamide 66 (PA66) composite material and a production method thereof, in particular to a high-strength nanometer antiflaming PA66 composite material. The composite material takes polyamide as the basal body, and is added with a main fire retardant, an auxiliary fire retardant, a nanometer modified material, a glass fiber, a grafting toughening modifier, an antioxygen, a lubrication dispersing agent and other assistants to mix in a high speed mixer, then the mixture is extruded and granulated through a double-screw extruder, so the composite material is obtained. The impact property of the material is improved, the material has high fire resistance and higher operating temperature, the water adsorbing index amount is reduced, the oxidation resistance, processing liquidity and smoothness are improved, and the combination property is balanced.

Description

technical field [0001] The invention relates to a nano nylon composite material and a preparation method thereof, in particular to a high-strength nano flame-retardant PA66 composite material and a preparation method thereof. Background technique [0002] Polyamide has good mechanical strength and rigidity, good wear resistance and other advantages, and is widely used in automotive parts, mechanical parts, electronic and electrical fields, etc., becoming the first of the five engineering plastics, replacing traditional metal materials in many applications . However, due to the poor heat resistance and acid resistance of polyamide, the high water absorption rate has a great influence on the dimensional stability of the product, and the poor low temperature impact resistance limits its application. Because the nano-polymer composite material realizes the uniform dispersion of the nano-phase, strong interfacial bonding and self-assembly, the material has the advantages of mech...

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Problems solved by technology

However, due to the poor heat resistance and acid resistance of polyamide, the high water absorption rate has a great influence on the dimensional stability of the product, and the poor impact resistance at low temperature limits its application.

Because the nano-polymer composite material realizes the uniform dispersion of the nano-phase, strong interfacial bonding and self-assembly, the material has the advantages of mechanical, thermal properties, gas barrier properties, etc., which are not available in ordinary polymers + fillers. In 1987, it was first introduced in Japan. It is reported that nylon 6 / montmorillonite composites are prepared by intercalation polymerization. The application of nanomaterials is a hot topic in global research. In the past, the traditional flame retardant system was used in nylon flame retardant reinforced products, and the proportion of flame retardant added The larger the impact resistance of the material, the lower the impact resistance of the material. Adding modified nano-materials to the traditional formula system can effectively reduce the amount of flame retardants added, and the overall performance is better. Few reports have prepared nano-flame-retardant reinforced PA66 materials.

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