Low-water-absorption glass fiber reinforced halogen-free flame-retardant polyamide material and preparation method thereof

Abstract

The invention relates to a low-water-absorption glass fiber reinforced halogen-free flame-retardant polyamide material and a preparation method thereof, and belongs to the technical field of high polymer materials. The material comprises the following components: a polyamide resin, a graft, an alkyl phenolic vulcanized resin, glass fiber, a flame retardant, a thermal stabilizing aid, a processinglubricant and silicone oil. According to the invention, a certain amount of glass fibers and a certain amount of a flame retardant are added into a polyamide resin to carry out flame retardance and reinforcement modification on the polyamide resin, so that the final material has the advantages of environmental protection, flame retardance, high strength, good temperature resistance and the like; more importantly a certain amount of an alkyl phenolic vulcanized resin and graft are added into the polyamide resin, so that the water absorption of the finally prepared glass fiber reinforced halogen-free flame-retardant polyamide material can be effectively reduced, the problems of poor dimensional stability, poor mechanical properties, poor electrical properties and the like caused by hygroscopicity are solved, and the advantages of small addition amount, high efficiency, low cost, no influence on material properties and the like are achieved; and the preparation method of the material is simple, easy to operate, low in equipment requirement and suitable for expanded production.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a low water absorption glass fiber reinforced halogen-free flame-retardant polyamide material and a preparation method thereof. Background technique [0002] Polyamide 6 (PA6) and polyamide 66 (PA66) have become one of the most widely used engineering plastics due to their excellent comprehensive properties, and are widely used in automobiles, aerospace, general machinery, electronics, instruments, meters, Household appliances and office equipment and other fields. The addition of glass fiber to PA6 and PA66 is beneficial to improve the strength, temperature resistance, corrosion resistance and cost reduction of the material. At the same time, it is flame-retardant modified to improve the flame resistance of PA6 and PA66 materials, thereby increasing the use of polyamide materials. However, in the later use of PA6 and PA66 products, because of the strong po...

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Problems solved by technology

Although the above methods can reduce the water absorption of PA6 and PA66, they face problems such as large amount of fillers and low water absorption materials, limited efficiency, impact on the performance of the entire material, high cost, and color, which limit the scope of use of PA6 and PA66.