PEEK material bonding performance enhancing method based on surface activation modification

Abstract

The invention provides a PEEK material bonding performance enhancing method based on surface activation modification, and belongs to the field of surface modification. The invention provides a modification method of polyether-ether-ketone, which comprises the following steps: treating polyether-ether-ketone to obtain polyether-ether-ketone with a porous structure on the surface; the treatment comprises one or more of mechanical roughening treatment, sulfonation treatment and plasma treatment; mixing the polyether-ether-ketone with the porous structure on the surface with a sodium borohydride solution, and then carrying out reduction reaction to obtain polyether-ether-ketone containing hydroxyl; and mixing the hydroxyl-containing polyether-ether-ketone with a solution of a silane coupling agent, and then carrying out a grafting reaction. The PEEK surface treated by the method can be obviously improved, the bonding strength of the PEEK with PMMA, composite resin and other materials is improved by 2-5 times or more, the jump from physical adsorption to chemical combination is realized, the bonding life is effectively prolonged, the durability is better, and the key technical bottleneck that the existing PEEK material is difficult to bond is solved.

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