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为何水性漆能有效降低VOC含量?

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扫一扫!为何水性漆能有效降低VOC含量?扫一扫!
浏览:- 发布日期:2017-07-07 09:00:21【

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水性漆有效降低VOC含量

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为何水性漆能有效降低VOC含量?我们以水性木器漆为例,水性木器漆的成膜物质决定了最终涂膜的性能,目前用于单组分水性木器漆的成膜物质有水性丙烯酸乳液(PA)、水性聚氨酯分散体(PUD)和丙烯酸酯改性聚氨酯(PUA)等。丙烯酸乳液具有优异的耐候性、耐水性,但涂膜存在热黏冷脆的缺点;水性聚氨酯分散体具有良好的低温成膜性、耐高温回黏性、高耐磨损等性能,但其自增稠性差、固含量低、价格高,涂膜耐水性、耐溶剂性差,影响了其推广应用。若将两者综合,克服各自缺点,发挥各自的优势,可使涂膜的性能得到充分的改善。成膜助剂是水性木器漆趣挣钱中VOC的最大提供源,要降低木器涂料VOC的含量就要减少成膜助剂的用量。

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