| 摘要 |
PURPOSE:To obtain the plastic optical fiber having particularly excellent heat resistance by forming a core of a crosslinkable resin which is substantially constituted of a specific monomer. CONSTITUTION:The crosslinkable resin substantially constituted of the monomer optical fiber expressed by formula I where R denotes 1 to 10C org. group and X is F, Cl, Br is used for the core. The resin for the core material is essentially required to be the crosslinkable resin in order to improve heat resistance. The chief material of the core material is required to be crosslinked by copolymerizing a multifunctional monomer as an auxiliary component in the case of using a monofunctional monomer as the above-mentioned chief material. The addition of a stabilizer, such as antioxidant, into the monomer at the time of polymn. is possible in order to improve the heat resistance. The well balanced plastic optical fiber is obtd. by using fluoroplastic resin having the excellent heat resistance and low refractive index for the clad material. The plastic optical fiber which can maintain >=90% holding rate of light quantity for >=1,000 hours in the air of 150 deg.C and has the excellent heat resistance is obtd. in this way. |
