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TopHuang (Top+Gun) 于 (Tue Aug 25 19:31:46 2009, 美东) 提到:
http://www.autopia.org/forum/car-detailing-product-discussion/1
http://www.maxperformancecars.com/index.php?option=com_content&
“Many car owners use a silicon-based product such as Armor-All (or one of
the thousand look-alikes) on their flexible rubber. In fact, this is
actually harmful to the rubber in the long term. The problem is not that
silicone oils hurt the base rubber, rather they can “hurt” the additives
that are in the rubber. Rubber products are formulated to perform the tasks
intended, and therefore differ chemically. The main enemies of the soft
rubber used in tires and weatherstripping are UV from the sun, and ozone
from the atmosphere. To combat the UV, they add carbon black (which is why
it's black and not color-coded to your paint!). The carbon black adsorbs
the UV and degrades to a grayish compound, which is why the rubber turns
slightly gray with age. To combat ozone, a wax-like compound is added as a
sacrificial protectant. Like the zinc ingot on your boat's outboard engine,
this stuff is meant to be “eaten” first, therefore protecting the rubber.
This only works on rubber items that are flexed, as the flexing forces
more wax to the surface to replace wax that has given its life for the cause
. This action is called “blooming” wax to the surface. (This is also the
cause of "dry rot" on tires not used very often; no flexing, no replacement
wax is “bloomed” to the surface, and the ozone gets to eat the rubber).
Now we have come to the problem. The waxes used as sacrificial protectants
are usually dissolved by silicone oils, and hence are removed from the
surface. No wax, no protection, eventual damage. And because they do not
last long, if the silicon products are not used very frequently, you will
eventually have owner-induced UV damage!”
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snowslope (雪坡) 于 (Tue Aug 25 20:57:06 2009, 美东) 提到:
armor-all care什么地方的rubber? 我怎么觉得都是用在车内的皮座和vinyl上的？皮
座用干净水擦就可以了，我的车马上200k了，都是用水擦，皮座一条裂纹都没有，
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TopHuang (Top+Gun) 于 (Wed Aug 26 14:13:20 2009, 美东) 提到:
主要是想找一个保护车门窗上橡胶塑料的东西，不然老化的很快
好像很多人都说含silicon的不好
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ffviii (当当当) 于 (Wed Aug 26 14:16:44 2009, 美东) 提到:
garage
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TopHuang (Top+Gun) 于 (Wed Aug 26 14:17:46 2009, 美东) 提到:
上班停车场没树荫呀 |
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