Highway maintenance equipment prospects
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In the electronic components potting, commonly used in potting there are three, namely: polyurethane material potting, silicone material potting and epoxy resin potting, the above three plastic have their own Of the advantages and disadvantages, so the scope of application is not the same,[url=http://chipspreadermarket.com/road/5035.html]energy saving cold milling machine[/url] as follows: Polyurethane potting material advantages: excellent low temperature resistance, you can use the catalyst to speed up the curing, and will not affect its performance.
Disadvantages: poor ability to withstand high temperature and easy to blister, solidified colloid surface is not smooth and toughness is poor, anti-aging ability and anti-seismic UV are weak, colloid easy to change color. Scope: suitable for potting heat is not high on the indoor electrical components. Epoxy resin potting advantages: excellent high temperature performance and electrical insulation,[url=http://chipspreadermarket.com/road/5355.html]drill out broken screw[/url] simple operation, solid before and after are very stable, a variety of metal substrates and porous substrates have excellent adhesion. Disadvantages: weak resistance to cold and heat changes, vulnerable to hot and cold after the impact of cracks, resulting in water vapor from the cracks into the electronic components,[url=http://chipspreadermarket.com/road/2828.html]asphalt crack repair methods[/url] moisture resistance is poor. And after curing for the colloid hardness is higher and more brittle, easy to hurt electronic components. Scope: suitable for filling room temperature conditions and environmental mechanical properties of the electronic components are not particularly required. |
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