Environment-friendly, high-performance and high-CTI flame retardancy enhanced nylon material and preparation method thereof

Abstract

The invention discloses an environment-friendly, high-performance and high-CTI flame retardancy enhanced nylon material and a preparation method thereof. The material is prepared from the following components in percentage by weight: 32-90% of a nylon raw material, 5-35% of glass fiber, 10-25% of a flame retardant TF9103, 0-5% of a flame-retardant synergist, 0-1% of a lubricating agent and 0-1% ofan antioxidant. The material and the preparation method thereof disclosed by the invention have the beneficial effects that the prepared environment-friendly and high-CTI flame retardancy enhanced nylon material meeting the environmental protection requirements has excellent mechanical properties and flame retardancy and meets requirements of ROHS and WEEE instructions; and by adding a home-madeefficient flame-retardant synergist, the dosage of the flame retardant can be effectively reduced, the CTI value can be increased, the reduction of the content of the flame retardant has positive significance for improving processability and saving cost, and the high CTI value can increase the application of composite materials and meet application requirements of more products; and the material can be applied to electronic and electrical equipment such as contactors and breaker shells.

Description

technical field [0001] The invention relates to a flame-retardant reinforced nylon composite material, in particular to a flame-retardant reinforced nylon material that is environmentally friendly, has excellent mechanical properties and a high CTI value. Background technique [0002] With the development of economy and science and technology, polymer materials have been more and more widely used in the fields of automobiles, electronic appliances, aerospace, construction, etc. Pure polymer materials are easy to burn, which limits the application of polymer materials, so research Flame-retardant polymer materials have become an important research field. In recent years, as countries around the world attach importance to environmental protection, halogen-free flame-retardant materials have become a current development trend. [0003] The amount of nylon ranks first among the five general-purpose engineering plastics. It has excellent mechanical properties, good chemical resis...

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Problems solved by technology

[0004] Nylon material itself is easy to burn, the heat generated during combustion is large, it is easy to produce molten droplets and dense smoke, and the flame is easy to spread. Although the glass fiber reinforced nylon material increases the mechanical properties of nylon, the addition of glass fiber makes the composite material burn The "candle wick effect" is easier to burn, and the development of flame-retardant reinforced materials has become the focus of the industry

At present, halogen flame retardants are widely used in the industry, but when halogen flame retardants burn, they will produce a large amount of toxic and harmful substances, which not only pollute the environment but also endanger human health, and cannot meet the requirements of ROHS and WEEE directives, so halogen-free flame retardants are used With more research and attention, the halogen-free flame retardants commonly used for nylon materials mainly include red phosphorus, melamine cyanurate, inorganic flame retardants, melamine polyphosphate, etc.

However, the addition of flame retardants will reduce the mechanical properties and electrical insulation properties of the material while improving the material. For example, the addition of flame retardants can cause the CTI to drop from 600 to 250 or even lower, which is the prerequisite for flame retardant reinforced nylon materials to achieve flame retardancy. It is of great significance to improve the CTI value and mechanical properties

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