Heat-resistant impact-resistant low-floating-fiber short-fiber reinforced PBT/ABS alloy material for electrical equipment shell, and preparation method thereof

Abstract

The invention discloses a heat-resistant impact-resistant low-floating-fiber short-fiber reinforced PBT/ABS alloy material for an electrical equipment shell, and a preparation method thereof. According to the key point of the technical scheme, the heat-resistant impact-resistant low-floating-fiber short-fiber reinforced PBT/ABS alloy material for the electrical equipment shell consists of the following components in percentage by weight: 20 to 60 percent of PBT, 15 to 60 percent of ABS, 0.2 to 0.5 percent of a coupling agent, 3 to 8 percent of a toughening agent, 0.2 to 0.5 percent of an antioxidant, 0.5 to 1.5 percent of a lubricating agent and 10 to 30 percent of short fiber. The heat-resistant impact-resistant low-floating-fiber short-fiber reinforced PBT/ABS alloy material for the electrical equipment shell, provided by the invention, solves the floating fiber problem of a long-glass-fiber reinforced PBT/ABS alloy material and the problem that a short-glass-fiber reinforced ABS material is low in notch impact strength and low in heat deformation temperature.

Description

[0001] 【Technical field】 [0002] The invention relates to the technical field of polymer materials, in particular to a heat-resistant, shock-resistant, low-floating short-fiber short-fiber reinforced PBT / ABS alloy material and a preparation method thereof, which can be used for electrical casings. [0003] 【Background technique】 [0004] Polybutylene terephthalate (PBT for short) is a linear polymer compound composed of repeating units of butylene terephthalate with hydroxyl or carboxyl groups at the end of the molecular chain. PBT molecular arrangement is regular, it is a crystalline material, the crystallinity can reach 40%, it has excellent chemical resistance, good weather resistance, excellent mechanical properties and good processing fluidity, etc., but it is sensitive to notch, toughness is poor, Large shrinkage, poor dimensional stability, prone to warping and deformation after molding, and its molecular chain contains ester groups, which are easily hydrolyzed at high ...

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Problems solved by technology

[0007] A heat-resistant, shock-resistant, low-floating short-fiber short-fiber reinforced PBT / ABS alloy material that can be used for electrical housings of the present invention solves the "floating fiber problem" of long-glass fiber-reinforced PBT / ABS alloy materials and the problem of short-glass fiber-reinforced ABS materials. The problem of low notched impact strength and low heat distortion temperature

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