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選購水性涂料用顏料炭黑應注意什么

2020-11-23 17:53:30
由于水性涂料自身的特殊性,所以在為水性涂料選擇上色顏料時也要特別注意,尤其是對于炭黑的選擇,因此對于水性涂料的顏料炭黑有很多的介紹。為確保水性涂料具有更好的光澤,所用的顏料炭黑需要更高的選擇標準。那么在選擇水性涂料顏料炭黑時,需要注意什么呢?
 
  購買水性涂料用顏料炭黑時的注意事項:
 
  顏料炭黑的性能在水性涂料的應用中起著決定性的作用,并且可以基于光譜反射率數據測量顏色特性。對于高質量的水性涂料,黑色水性涂料看起來更亮,因為不僅具有良好的黑色度,而且通過技術手段還具有非常好的深藍色相。所有這些主要是由于:
 
  a)所用的有色炭黑顏料的原始粒徑,通常,粒徑越小,可見光的吸收越好,看起來越暗。
 
  b)顏料炭黑比表面積的大小
 
  c)主要粘合劑的相容性
 
  d)顏料炭黑本身表面的化學性質
 
  另外,顏料炭黑本身的結構也是一個不能忽視的問題,由于粒徑小,炭黑基本上以聚集體的形式存在,該結構應理解為是指顏料木炭。黑色原色的分支數相互連接,并且分支連接得越多,結構越高。高度結構化的顏料炭黑往往具有優異的潤濕和分散性。
 
  這里應注意,高結構顏料炭黑具有較好的潤濕性和分散性,但是缺乏黑度是最大的缺陷,包括需要對高結構顏料炭黑進行再加工。使用樹脂可使顏色更明顯,并且當黑色度與良好的分散性相匹配時,它將成為水性涂料的理想顏料炭黑。
 
以上就是在為水性涂料選購顏料炭黑時應該注意的問題。
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日本在线高清不卡免费播放
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