| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fire-resistant piping material which has superior fireproof performance and good physical properties, can be colored, and exhibits superior recyclability. <P>SOLUTION: The fire-resistant piping material is made using a flame-retardant resin composition constituted of a polyvinyl chloride resin, at least one selected from a group consisting of Ca-Zn heat stabilizer, Mg-Zn heat stabilizer and Ca-Mg-Zn heat stabilizer, and synthetic hydrotalcite. In the refractory test carried out in accordance with ISO834-1 (the evaluation method of the performance test of the pipe piercing a refractory space or the like based on the modified Building Standard Law enforced on June 1, 2000), the pipe surface temperature at the position of 10 mm from a floor material in a non-heated area does not exceed 100°C at the time of 60 minutes elapsed from the start of the refractory test. <P>COPYRIGHT: (C)2012,JPO&INPIT |
