W) F% u( Y+ ]7 X; [For indoor air quality, CLT has been tested to determine the level - k. Z/ B' B# t p9 S; w8 `& ?+ Land safety of the off gassing it produces. CLT glue lines were tested for4 {/ q0 P& m: a8 G# K
volatile organic compounds (VOCs), including formaldehyde emissions.) V" n; z0 J: e/ T+ ]7 O, v1 i' V
The VOCs as measured in a series of tests were found to be roughly one O0 T( H; r" O5 ^/ i j0 ^parts per billion (ppb), well under the standard of 50 ppb deemed to be $ A; d9 }" l2 S; O$ G# v [a health hazard.: [; f3 H x7 `! V# z" C6 B9 [
石工 发表于 2016-6-2 15:29 * [0 _) F$ l9 V! E; sFor indoor air quality, CLT has been tested to determine the level4 ?; b+ d5 ^/ w! C' @8 w t v
and safety of the off gassing i ...
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见过一个游泳池的房顶梁用这种材料做然后靠墙的部分全部腐烂了。好像是水蒸汽在棚顶凝结然后流倒最底初聚集,从而腐烂低处。。所以我看,这种材料不像他们所宣称的那样。不过到是看到很多新建的游泳馆都在用这种材料。估计以后会出大问题的,那天塌了死几个人,人们才会禁止使用这种材料在可能集水的地方。
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室内和室外用的材料是不一样的,室内用的是聚酰胺,这种东西稳定无毒。以前冰箱用的白色的泡沫是有致癌的东西放出来的。国内好像还在大量的应用,这边好像很难见到了,但在包装材料上还可以见到。。不过我个人始终对有机材料有怀疑,聚酰胺只不过结构更为稳定罢了,理论上应该还是有挥发的,只不过可能在现在仪器检测下限。另外FDA或官方机构的东西也不能全信,三聚氰胺就是FDA认为无毒的东西。我个人对有氮的有机化学物质和苯环类的东西始终用畏惧感。哈哈哈,我知道这不是科学的精神。
石工 发表于 2016-6-3 05:29 4 L( K9 h' I2 a) }3 jFor indoor air quality, CLT has been tested to determine the level 3 @, h5 C5 F4 ^+ T) X3 [; Hand safety of the off gassing i ...
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9 t) h: v }- J60年代这边还很时兴喷聚尿醛泡沫,后来就是因为有formaldehyd释放而弃用了。