PPS/PBT composite material for NMT and preparation method thereof

Abstract

The invention relates to the technical field of nanometer forming, and particularly discloses a PPS / PBT composite material for NMT and a preparation method thereof. The PPS / PBT composite material for the NMT is prepared from the following components in parts by weight: 50-65 parts of PPS resin, 15-25 parts of PBT resin and 15-25 parts of auxiliaries, and the auxiliaries are prepared from modified chitosan, polyethylene glycol, a thickening agent and a surfactant in a weight ratio of 1:(0.3-0.5):(0.01-0.03):(0.001-0.01); the preparation method comprises the following steps: S1, mixing the modified chitosan, the polyethylene glycol and the surfactant to obtain a mixture; and S2, uniformly mixing PBT resin, PPS resin, a thickening agent and the mixture, extruding through an extruder, and granulating to obtain the PPS / PBT composite material for NMT. The PPS and PBT composite material disclosed by the invention can be used for a nano forming technology, and the bonding firmness of the PPS / PBT composite material for NMT and metal can be improved.

Description

technical field [0001] The application relates to the field of nano-molding technology, more specifically, it relates to a PPS / PBT composite material for NMT and a preparation method thereof. Background technique [0002] NMT (Nano Molding Technology) is a nano molding technology that combines metal and plastic nanotechnology by injecting resin onto the T-treated metal surface to connect metal and resin. NMT can directly inject plastic onto the metal surface and achieve a perfect and strong bond. It can replace traditional gluing, in-mold coating injection, metal riveting and grafting and other technologies. It has outstanding advantages and can reduce the overall thickness and height of the product. The finished product Excellent mechanical structure and mechanical strength make the bonding between plastic and metal highly reliable. [0003] With the development of NMT technology, in recent years, the resin materials directly applied to NMT are glass fiber modified PPS res...

AI Technical Summary

Problems solved by technology

However, although the mechanical properties of PBT modified by glass fiber are enhanced, the longitudinal and transverse shrinkage rates of PBT products modified by glass fiber are inconsistent, which is easy to warp the product, and the compatibility between glass fiber and PBT is poor, resulting in The two are easy to separate, making the local viscosity uneven

When stripping fiber-modified PPS, due to the weak cross-sectional bonding force between PPS resin and glass fiber, the glass fiber is less surrounded by PPS resin, resulting in brittle fracture of the material

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