在本文中，我会分享多边形的类型，聚氨酯的特定品牌，yous should he ones to use (and avoid) to prevent yellowing in your floors. I will also share the ones you want to avoid.
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The 2nd major cause is the polyurethane used. Oil based polyurethanes turn the floors yellow…and over time,they become more yellow…and sometimes even a bit orangish. It's the UV rays from the sun that turn them a darker yellow or amber and the more they are exposed over time,the yellower they get. This holds true for viirtually all species. There is a very simple solve to this issue (see below).
如果你想避免黄色，使用水性聚氨酯（例如博纳交通高清）、它们更轻、更清晰。油基聚氨酯会给你一层黄色外套，so your floors will have a yellow tint. They will continue to get darker and more yellow over time.
现在我想澄清一下，that you can never full get rid of the yellow no matter what you do. Over time,the wood oxidizes from the UV and other natural elements and the poly can too. Everything is a matter of degree. But,there is a clear distinction based on the brand and quality of the poly. And,耐久性是不同的。
博纳交通高清一直是我最推荐的水性保利，因为它看起来是最好的，yellows the least and is the most durable. You'll be happy to know that it's very low VOCs (perhaps the lowest in the marketplace),doesn't smell much. The minor odor dissipates really quickly and floors both dry and cure faster. You can read a more thorough review of this and other great water borne polyurethanes在这里。
2. Loba WS 2K Supra
珞巴is another awesome polyurethane on the marketplace. It doesn't yellow and it claims to be just as durable as Bona Traffic HD.
We have used this product and so far love it. We haven't had any complaints about it. But,因为是新产品，it hasn't stood the test of time at this point. It's really best to check on the floors 2 years later,所以也许在一年左右的时间里，我们可以提供更多的见解。
StreetShoeis another great choice for water borne poly. It used to be the gold standard (and we used to use it) until Bona Traffic HD came along. tt's a durable polyurethane that lasts much longer than virtually all water based polyurethanes on the market.
它也比博纳流量高清低一点，but yellows a bit more and doesn't last quite as long. But it's head and shoulders above most water based polyurethanes.
4帕尔曼氏pall - x96
Pall-x 96is a new water based polyurethane to hit the marketplace. It promises high durabilty,低气味，抗紫外线。批准用于轻型商用，所以这是耐用,但它似乎没有博纳交通HD那么耐用，博纳交通HD是为大型商业机构设计的。
5. Bona Mega Clear HD
博纳梅格透明高清is a new item in the Bona Mega line. The Bona Mega line is what I consider a mid-grade water borne poly. It does the job,但与博纳交通相比，油基聚酯的耐久性要差一些。如果你想要一种高价值的水性聚酯，this is it. But,如果你想要高年级，pay the extra for Bona Traffic HD. It will probably last an extra 3-4 years (and look better).
What if I have dark hardwood floors? Do I need to worry about them yellowing?
黑暗的颜色,我更喜欢油基聚合物，因为它看起来更深，richer and slightly darker look. It has more depth and looks more premium with oil based poly. My recommendation isDuraseal适用于油性聚合物。
与水性聚物，the color will be a bit lighter and the finish a bit duller. But,the smell be lower and it will dry faster. As I mentioned above,博纳交通高清是我的第一选择。
不,not necessarily. There are several high grade water based polyurethanes,包括博纳交通高清和珞巴that are just as durable as oil based poly. It's also true that there are many low and mid grade water-borne polyurethanes that are less durable than oil based poly. You need to delve deeper to understand the brand and line.
水性聚黄比油性聚黄少(油性聚黄变的很黄)。The the amount of yellowing over time will vary based on the strength and grade of the polyurethane. Both wood and poly will react with UV rays.高档水性聚氨酯等博纳交通高清和珞巴会有轻微的泛黄，但是中期等级,低品位和油改性聚酯将有更显著的氨化作用。
Oil modified polyurethanes are a mix of oil and water based poly. They tend to go on less yellow than an oil based poly but slightly more yellow than the high grade water based polyurethane such as博纳交通高清和珞巴。They have a slightly amber tone. And,重要的是,随着时间的推移，它们会变黄，而且不那么耐用。
此外，you may want to look to see how you can reduce the UV entering your home. Not only will this help your floors,还有你的家具，地毯，as well as your skin. Do you have window treatments/sheers that can reduce the UV rays or high grade windows that reflect some of it. I believe you may also be able to line your windows with UV film.
如果你想避免你的硬木地板变黄，使用高级水性聚氨酯。这将使您看起来更轻更现代。它特别适合自然环境。白色水洗和灰色(或灰色混合地板)。我强烈建议你选择博纳交通高清(Bona Traffic HD)或Loba等更高档的品牌，因为它们看起来更好看，颜色不那么黄……他们持续时间更长。