Critical volume of binder is calculated from the oil absorptions of pigments which are expressed in terms of gm. linseed oil per 100 gm pigment
Critical Vol. Binder = g oil absorbed/ density of oil
Usually PVC is well below the CPVC but sometimes eg zinc silicates PVC can approach or exceed CPVC
Please calculate your PVC and CPVC by hand before add (片层防腐材料) and after, then you will know the differences.
Maybe PVC is not the problem!
More experiments need to be done if you want to find out the real reason.作者: longman 时间: 2013-6-11 13:54
真可惜,(片层防腐材料)是否=flake Anti-corrosive materrails?作者: zhangyu2008525 时间: 2013-7-5 12:10
富锌漆的锌含量及pvc值好像是很能影响其防腐性的,有高人可以解释下吗作者: engineerhxl 时间: 2013-7-6 10:57
你的片层颜料加入方式对吗?作者: zhangyu2008525 时间: 2013-7-8 07:40
你好,这种材料应该怎么加呢?作者: zhangyu2008525 时间: 2013-7-8 07:42
tank 发表于 2013-6-2 21:11
应该有些关系----原来的PVC是多少?加了片状填料之后呢?
这种片层材料密度很轻,但吸油量很多,我一般加入量较少(0.3-0.5%),pvc改变较少,但cpvc改变较大,会不会是这方面的原因呢? 作者: tank 时间: 2013-7-8 07:57