MECHANISM OF ADHESION OF POLYURETHANE POLYMETHACRYLATE SIMULTANEOUS INTERPENETRATING NETWORKS ADHESIVES TO POLYMER SUBSTRATES

作者：JIA DM^*; PANG YX; LIANG X

来源：Journal of Polymer Science Part B: Polymer Physics , 1994, 32(5): 817-823.

DOI：10.1002/polb.1994.090320505

• SIMULTANEOUS INTERPENETRATING NETWORK
• MECHANISM OF ADHESION
• POLYURETHANE
• POLYMETHACRYLATE
• POLYMER SUBSTRATE

Polyether-based polyurethane/poly(methyl methacrylate-co-ethyleneglycol dimethacrylate) interpenetrating polymer networks [PU/P (MMA - co - EGDMA) - IPNs] were synthesized and used as adhesives to adhere vulcanized natural rubber (NR) and soft polyvinyl chloride (PVC). The structure and morphology of the IPN adhesives in bulk and near the adhesive/substrate interfaces were investigated. A new mechanism of adhesion called conjugate interpenetration of networks across interfaces, which is suitable for IPN adhesives and polymer substrates, was put forward. According to this mechanism, while forming simultaneous interpenetrating networks in the adhesive, the monomers in the IPN adhesive can permeate polymer substrates and polymerize in situ to form gradient IPNs, thereby producing conjugate three-component IPNs near the adhesive / substrate interfaces. It is the conjugate interpenetration of the networks across the interfaces that strengthens interfacial combination remarkably and results in high bond strength of IPN adhesives.

• 出版日期1994-4-15
• 单位华南理工大学