Low-temperature-resistant PC alloy material and preparation method thereof

Abstract

The invention provides a low-temperature-resistant PC alloy material and a preparation method thereof. The low-temperature-resistant PC alloy material comprises the following components in parts by weight: 70.0-90.0 parts of PC resin, 25.0-35.0 parts of a PBT resin, 5.0-15.0 part of a flame retardant, 2.0-10.0 parts of an auxiliary flame retardant, 2.0-15.0 parts of a first toughening agent, 1.0-5.0 parts of a second toughening agent, 0.01-2.0 parts of an antioxidant, and 0.01-1.2 parts of other auxiliary agents. The low-temperature-resistant PC alloy material provided by the invention has excellent low-temperature resistance, and is especially suitable for occasions with relatively high requirements on use environments, especially in the fields of household appliances, industrial machinesand the like which are in contact with oil stains and solvents and have requirements on low-temperature toughness.

Description

technical field [0001] The invention belongs to the field of engineering plastics, and in particular relates to a low-temperature-resistant PC alloy material and a preparation method thereof. Background technique [0002] Polycarbonate resin is a general-purpose engineering plastic, which has the advantages of transparency, impact resistance, heat resistance, dimensional stability, etc., but PC also has the problems of large internal stress, solvent resistance and difficult processing. PBT resin is a crystalline polymer with excellent solvent resistance and molding processability. Adding PBT to PC resin can significantly improve the processability and solvent resistance of PC; the improvement of solvent resistance is due to the formation of an interpenetrating network in which PBT, only when the crystallized PBT resin reaches a certain ratio, PC / PBT The solvent resistance of the alloy is greatly improved. [0003] When applied to home appliances, electrical appliances or i...

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Problems solved by technology

[0003] When applied to home appliances, electrical appliances or industrial machine shells, the material usually needs to meet the flame retardant requirements of V-0. In addition, when used outdoors, the material requires high toughness and low temperature resistance. Conventional PC or PBT flame retardants will Significantly reduce the toughness or low temperature resistance of the material, limiting the scope of use of the material

In order to make up for the damage of the flame retardant to the toughness of the resin, a toughening agent is usually added to improve the toughness, while the commonly used toughening agent MBS for PC or EBA-GMA, a commonly used toughening agent for PBT, will seriously affect the flame retardant performance of the resin. There is a contradiction between toughness, especially low temperature toughness, and it is difficult to achieve it at the same time

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