| 摘要 |
PROBLEM TO BE SOLVED: To provide a fluoropolymer composite whose surface has satisfactory adhesiveness, by forming, on the surface of a shaped fluoropolymer article, a graft layer composed of a monomer residue which has a double bond and is capable of radical polymerization. SOLUTION: Fluoroplymers such as polytetrafluoroethylene (PTFE), tetrafluoroethylene-hexafluoropropylene copolymer (FEP) and poly (vinylidene fluoride) are employed. Ultraviolet rays are irradiated previously onto a shaped fluoropolymer article using a 100-240nm UV generator in a dose of 20 to 2,000mJ/cm<2> . Then, a high voltage of 1 to 20KV is applied between positive and negative plates and a monomer is introduced into the generated electrostatic discharge atmosphere to thereby carry out a graft polymerization. The application of voltage is carried out for 0.1 to 20min and the oxygen concentration in the electrostatic discharge atmosphere is 1,000ppm or less. A shaped fluoropolymer article having an adhesive surface wherein a graft layer composed of a radically polymerizable monomer residue is formed in a thickness of 0.01 to 10μm, which is one type of this fluoropolymer composite, is obtained. |
