Ethylene glycol terephthalate-modified halogen-free flame-retardant polyamide composite material

Abstract

The invention relates to an ethylene glycol terephthalate-modified halogen-free flame-retardant polyamide composite material and belongs to the technical field of macromolecular materials. The ethylene glycol terephthalate-modified halogen-free flame-retardant polyamide composite material is prepared from the following raw materials in parts by weight: 120 to 136 parts of polyamide 6 resin, 30 to 45 parts of polyamide 66 resin, 23 to 28 parts of polyethylene glycol terephthalate, 12 to 19 parts of a flexibilizer, 35 to 43 parts of phosphate, 6 to 11 parts of glass microbeads, 1.2 to 1.9 parts of an antioxidant, 27 to 36 parts of reinforced fiber, 1.2 to 2.1 parts of a lubricating agent and 1 to 2.1 parts of carbon black. According to a test, the polyethylene glycol terephthalate-modified halogen-free flame-retardant polyamide composite material provided by the invention has the following performance indexes: the tensile strength is 135-158 MPa; the bending strength is 226-247 MPa; the bending modulus is 3,800-4,700 MPa; the notch impact strength is 12.4-15.2 kj / m<2>; and the flame resistance reaches V-0(UL-94-1.5mm).

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a halogen-free flame-retardant polyamide composite material modified by ethylene terephthalate. Background technique [0002] Polyamide is the most widely used engineering plastic material, widely used in automobiles, electrical appliances, construction and other fields. However, due to the strong polarity of the polyamide material, it is easy to absorb moisture, which makes it more demanding in processing and other processes. Polyethylene terephthalate has strong crystallinity, high melting point, and good strength. It is often used in the alloying of some engineering plastic materials to meet the requirements of engineering plastic materials in special fields such as temperature resistance and solvent resistance. The technical solution to be introduced below is based on this premise. Contents of the invention [0003] The task of the present invention ...

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Problems solved by technology

However, due to the strong polarity of the polyamide material, it is easy to absorb moisture, which makes it more demanding in processing and other processes.

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