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现在有个样品,是塑胶外面电镀了铜,铬,镍。3 w) b8 s+ v$ ~! r
电镀层可以用物理方法分离,现在存在一个问题。3 A- H1 E* z, N; D& X
做ASTM F963 有害金属溶出测试
! g7 e) O7 [+ N. @7 m1 q在不同的检测公司做测试,却存在两种不一样的判断和测试结果5 ?2 `6 J$ `; P" M6 f
一种为:不用做此标准的溶出测试,因为是电镀层是不用测试的;9 i, x, f; D+ o+ n% O, W
第二种为:需要做电镀层溶出测试,并且与涂层做法一样,那边说用机械方式能把电镀层 ^8 y; j# b, i2 J" O3 T: Z" W; H
与基材分离。
" y1 Q! E7 E: A# u" R' Z9 J第二不必多说,电镀铬的,铬超标是很正常的。
. X, K2 N- _. ?超标就超标呗,可以换一批样。
9 o$ h" z0 V/ T" `( G |6 c# Z但是有两种答复,真的不知道哪种会更准确。
, [* b) m. v/ t( t于是后来自己查阅了,13CFR1303.2提到了相关涂层的定义范围7 F0 v6 }7 g/ @* R6 c' Z
(1) Paint and other similar surface-coating materials means a fluid, semi-fluid, or other material, with or without a suspension of finely divided coloring matter, which changes to a solid film when a thin layer is applied to a metal, wood, stone, paper, leather, cloth, plastic, or other surface. This term does not include printing inks or those materials which actually become a part of the substrate, such as the pigment in a plastic article, or those materials which are actually bonded to the substrate, such as by electroplating or ceramic glazing.
% a' h/ P3 b$ c但是定义比较模糊,相更清楚的了解是要测试还是不用测试,根据哪个标准条款?还是依据什么方式( B" C* A! n! }$ W& C
解决?% _4 T: H1 \" s$ u3 n+ F
谢谢大参与讨论 |
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