The invention relates to a preparation method of high-strength oil-resistant sandpaper base paper. The method first mixes nano-microfibrils and sodium polyacrylate in water according to a certain mass ratio, fully stirs them and disperses them under ultrasonic wave, then swells polyvinyl alcohol and water in a certain temperature water bath according to a certain mass ratio to produce polyvinyl alcohol solution, which is slowly added with a certain mass ratio of polyvinyl alcohol. The mixture of nano-fibrils and sodium polyacrylate was dissolved in water bath at a certain temperature, and the coating solution was dispersed under ultrasonic wave to prepare a coating with good dispersibility. Finally, the coatings were coated on the surface of sandpaper base paper, and the coated paper was dried at constant temperature and humidity for 24 hours to obtain sandpaper base paper. The composite coating prepared by the invention has good dispersion of the coating solution and retains all properties of the nano-microfibril/polyvinyl alcohol composite coating. Therefore, the sandpaper base paper after coating can obtain good mechanical properties and oil-proof properties.
【技术实现步骤摘要】
一种高增强抗油砂纸原纸制备方法
本专利技术涉及一种高增强抗油砂纸原纸制备方法。
技术介绍
砂纸原纸除了要求具有较好的机械强度性能外,还需要具有一定的耐水性、防油性等性能。传统的耐水砂纸原纸因为原纸的防油性能不足,影响了砂粒与胶黏剂的粘合性能,从而影响其磨削性能。由此可知,原纸必须具有良好的耐水性、耐油性和一定的机械性能。纳米微纤丝具有高黏度与优异的粘结性能,可以作为涂料中的辅助胶黏剂;同时纳米微纤丝具有高亲水性,能提高涂料的保水性能,改善涂料的流平性。当纳米微纤丝作为涂层时,因其能够覆盖纸张表面纤维,填平纸张凹凸不平处,涂布纸的空隙尺寸相比原纸也大大减小,因而液体向涂布纸内渗透的速度会大大减小。同时,纳米微纤丝的添加致使纸张表面的纤维间的结合力得到很大提高,且提高其抗油性能。因此,纳米微纤丝的添加可以使砂纸原纸性能提高。在制备聚乙烯醇/纳米微纤丝的复合涂料中,纳米微纤丝只能在水中才能很好的分散,但聚乙烯醇的溶解也需要一定量的水分。当两者相混合时,涂料中的水分明显不够两者的同时使用,此时,出现了纳米微纤丝不能在涂料液中良好的分散现象。聚丙烯酸钠因为其特有的性能,可以 ...
【技术保护点】
1.一种高增强抗油砂纸原纸制备方法,其特征在于首先将纳米微纤丝与聚丙烯酸钠按质量比为8︰1~15的比例在水中进行混合,充分搅拌10~20min后,在90赫兹的超声波下分散15min;其次,将聚乙烯醇与水按质量比为1︰10的比例在60~65℃水浴中润胀30min,制得聚乙烯醇溶液,在该溶液中缓慢加入与聚乙烯醇质量比为100︰9~23的纳米微纤丝与聚丙烯酸钠混合物,升温至90~95℃的水浴中充分溶解,溶解后的涂布液再在90赫兹的超声波下分散15min,制得分散性良好的涂料;第三,将制备好的涂料对砂纸原纸进行表面涂布处理,经涂布后的纸张先在20~60℃下干燥 20min,在恒温恒 ...
【技术特征摘要】
1.一种高增强抗油砂纸原纸制备方法,其特征在于首先将纳米微纤丝与聚丙烯酸钠按质量比为8︰1~15的比例在水中进行混合,充分搅拌10~20min后,在90赫兹的超声波下分散15min;其次,将聚乙烯醇与水按质量比为1︰10的比例在60~65℃水浴中润胀30min,制得聚乙烯醇溶液,在该溶液中缓慢加入与聚乙烯醇质量比为100︰9~23的纳米微纤丝与聚丙烯酸钠混合...
【专利技术属性】
技术研发人员:孟育,童树华,王希运,陈杰,郭大亮,夏新兴,华飞果,
申请(专利权)人:浙江金昌特种纸股份有限公司,
类型:发明
国别省市:浙江,33
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