Laser-marked and halogen-free flame-retardant polyamide composite material

Abstract

The invention relates to a laser-marked and halogen-free flame-retardant polyamide composite material with excellent flame-retardant property and laser marking effect. The polyamide composite material is characterized by comprising the following substances: at least one or more of polyamide resins, at least one or more of inorganic packing materials, at least one or more of halogen-free flame retardants which can provide the excellent flame-retardant property for the composite material, at least one or more of aids which can provide excellent laser marking for the composite material, and other unessential aids such as lubricants, antioxidants, pigments and the like. The composite material has the comprehensive performance of excellent temperature resistance, flame retardance, and dimensional stability, easiness of processing and molding and the like, and also has clear and attractive laser marking effect at the same time. The composite material is widely applied in the fields of household products, electronic appliances, laser handles and the like and has huge market prospect.

Description

technical field [0001] The invention relates to a laser-markable, halogen-free flame-retardant polyamide composite material with excellent flame-retardant properties and excellent laser-markable effect, belonging to the field of general engineering plastic polyamide composite material manufacturing. Background technique [0002] Polyamide resin is a thermoplastic general engineering plastic with excellent comprehensive properties. It has excellent temperature resistance. The thermal decomposition temperature is usually greater than 350 ° C. It can be used continuously under the conditions of 80 to 120 ° C. It has good tensile strength Strength, is the preferred material for mechanical parts, and also has excellent impact toughness, corrosion resistance to acids, alkalis, most inorganic salt solutions, halogenated alkanes, hydrocarbons, esters, ketones, etc. Excellent wear resistance, self-lubricating It can be widely used in functional components in the fields of electrical ...

AI Technical Summary

Problems solved by technology

Its shortcomings: First, although the polyamide itself has self-extinguishing properties, the flame retardant performance cannot meet the requirements for use; second, the halogen-containing flame retardant is added to the polyamide, and the halogen-containing flame retardant released when the halogen-containing flame retardant burns Compounds not only cause harm to people, but also directly pollute the environment; third, they do not have the ability to clearly laser mark, so the current common practice is to use silk screen printing, ink spraying, etc. to mark thermoplastic products to reflect relevant information, such as manufacturer , production date, shelf life, anti-counterfeiting marks, etc., but the screen printing method will inevitably cause mechanical damage to the product surface and even produce chemical effects. Although the surface printing technology such as ink spraying is clear, it has high impact on raw materials such as composite materials and inks. requirements, and its long-term durability cannot meet the requirements of users