| 摘要 |
PURPOSE:To obtain a composition for resin foamed products that can give resin foamed products excellent in thermal and chemical stabilities, electrical properties, non-tintability, non-toxicity, etc., and having fine closed cells and a high foaming rate, by using a resin to be foamed and a specific foaming nucleator. CONSTITUTION:The major components of the composition for resin foamed products are a resin to be foamed and a foaming nucleator comprising a ceramic or its raw material and zeolite. Preferably, in the composition for resin foamed products, the resin to be foamed is a fluororesin and the foaming nucleator comprises boron nitride and zeolite. More preferably, the composition for resin foamed products is such that the resin to be foamed contains 50wt.% or more fluorine with the number-average molecular weight being 20,000 to 1,000,000, the ceramic or its raw material is contained in an amount of 0.5 to 2wt.% based on the resin and the zeolite is contained in an amount of 25 to 180ppm based on the resin. |
