CN110699163A - 一种水性硬脂酸钙分散液及其制备方法 - Google Patents
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Abstract
本发明公开了一种水性硬脂酸钙分散液及其制备方法,按重量份数计,包括如下组分:聚乙烯醇2‑8份、硬脂酸铵50‑100份熟石灰10‑30份、乳化剂A1‑3份、乳化剂B2‑5份、消泡剂0.5‑1份、分散剂1‑2份、纯水150‑200份。本发明有效解决了硬脂酸钙分散液稳定性和分散性的问题,组分的相容性好,且制备工艺简单,实现了硬脂酸钙的微粒子化;所制得的水性硬脂酸钙分散液固含量范围宽泛,粘度低,润滑效果理想,可长时间存放不变质,不出现凝絮分层现象。
Description
技术领域
本发明涉及涉及造纸领域,尤其涉及一种水性硬脂酸钙分散液及其制备方法。
背景技术
水性硬脂酸钙分散液主要用作特种纸润滑剂、橡胶脱模剂以及水性涂料功能助剂,但是硬脂酸钙不溶于水,需要将其制备成微粒分散在应用体系中。普通工艺生产的硬脂酸钙分散液稳定性不佳易絮凝沉降,使用效果不尽理想。
为提高稳定性,目前技术手段是前段增强剪切研磨力度或后段添加增稠防沉降助剂,此技术手段只能延缓乳液粒子沉降聚集的速度,在遇到偏高储存及运输环境时,分散液依然易出现分层现象,从而导致其应用效果较差。
如专利CN107118404A披露了一种水性硬脂酸钙及其制备工艺,其采用硬脂酸及氢氧化钙预乳液进行连续滴加来制备硬脂酸钙分散液。又如专利CN103194932A披露了一种高固含硬脂酸钙润滑剂及其制备方法,其采用氢氧化钙悬浮液滴加硬脂酸乳液并后期添加水性润滑剂的方法制备硬脂酸钙分散液。以上两种制备方法所制备产品都会有纯度低、分散性不佳、储存稳定性差的缺点。
发明内容
本发明为解决现有技术中的上述问题,提出一种粒径细小、分散性好、不易结皮、稳定性优异且应用效果好的水性硬脂酸钙分散液及其制备方法。
为实现上述目的,本发明采用以下技术方案:
本发明的第一个方面是提供一种水性硬脂酸钙分散液,按重量份数计,包括如下组分:
进一步地,在所述的水性硬脂酸钙分散液中,按重量份数计,包括如下组分:
进一步地,在所述的水性硬脂酸钙分散液中,所述乳化剂A为脂肪酸甲酯聚氧乙烯醚磺酸钠、烷基苯磺酸盐、脂肪醇聚氧乙烯醚硫酸钠、烷基酚聚氧乙烯醚磺酸钠中的一种或两种。
进一步地,在所述的水性硬脂酸钙分散液中,所述乳化剂B为壬基酚聚氧乙烯醚、异构十三醇聚氧乙烯醚、聚氧乙烯失水山梨醇单油酸酯、聚氧乙烯失水山梨醇单硬脂酸酯、失水山梨醇单油酸酯、失水山梨醇单硬脂酸酯中的一种或两种。
进一步地,在所述的水性硬脂酸钙分散液中,所述消泡剂为聚二甲基硅氧烷或聚醚-硅氧烷共聚物。
进一步地,在所述的水性硬脂酸钙分散液中,所述分散剂为聚丙烯酸钠。
本发明的第二个方面是提供一种如上述所述的水性硬脂酸钙分散液的制备方法,包括如下步骤:
(1)将聚乙烯醇和一部分纯水加入到反应釜中,在90℃-95℃下充分溶解,之后加入硬脂酸铵、乳化剂A和乳化剂B,恒温预乳化搅拌0.5-2小时;
(2)将另一部分纯水和熟石灰、分散剂配置成悬浮液,搅拌待用;
(3)将步骤(2)中悬浮液快速加入到步骤(1)的釜料中,于65-80℃下搅拌反应2小时,然后快速冷却至60℃,过均质机,加入消泡剂,搅拌均匀,出料,即得。
进一步地,在所述的水性硬脂酸钙分散液的制备方法,步骤(1)中所述搅拌转速为200-300r/min,恒温温度为78-82,搅拌时间为1h。
进一步地,在所述的水性硬脂酸钙分散液的制备方法,步骤(2)中所述纯水用量占纯水总量的1/4-1/3。
进一步地,在所述的水性硬脂酸钙分散液的制备方法,步骤(3)中所述均质为低温高压均质,均质温度为10-15℃,均质压力为50-55MPa。
本发明采用上述技术方案,与现有技术相比,具有如下技术效果:
本发明提供的水性硬脂酸钙分散液,有效解决了硬脂酸钙分散液稳定性和分散性的问题,组分的相容性好,且其制备工艺简单,实现了硬脂酸钙的微粒子化;所制得的水性硬脂酸钙分散液固含量范围宽泛,粘度低,润滑效果理想,可长时间存放不变质,不出现凝絮分层现象。
具体实施方式
下面通过具体实施例对本发明进行详细和具体的介绍,以使更好的理解本发明,但是下述实施例并不限制本发明范围。
实施例1
一种水性硬脂酸钙分散液的制备,具体包括如下步骤:
(1)根据硬脂酸钙分散液的配方比例,取3份聚乙烯醇和100份纯水加入到反应釜中,在90℃-95℃下充分溶解,之后加入50份硬脂酸铵、1.5份脂肪酸甲酯聚氧乙烯醚磺酸钠、0.5份脂肪醇聚氧乙烯醚硫酸钠、2份异构十三醇聚氧乙烯醚,恒温(80℃)预乳化搅拌1小时;
(2)取50份水水、20份熟石灰、1份分散剂配置成悬浮液,搅拌待用;
(3)将氢氧化钙悬浮液快速加入到釜料中,于80℃下搅拌反应2小时,反应完毕冷却至60℃,过均质机,加入消泡剂0.8份,搅拌均匀,出料。
实施例2
一种水性硬脂酸钙分散液的制备,具体包括如下步骤:
(1)根据硬脂酸钙分散液的配方比例,取5份聚乙烯醇和110份纯水加入到反应釜中,在90℃-95℃下充分溶解,之后加入70份硬脂酸铵、1.5份脂肪酸醇聚氧乙烯醚磺酸钠、3份壬基酚聚氧乙烯醚、1份聚氧乙烯失水山梨醇单油酸酯,恒温(80℃)预乳化搅拌1小时;
(2)取50份水水、25份熟石灰、1.5份分散剂配置成悬浮液,搅拌待用;
(3)将氢氧化钙悬浮液快速加入到釜料中,于80℃下搅拌反应2小时,反应完毕冷却至60℃,过均质机,加入消泡剂0.9份,搅拌均匀,出料。
实施例3
一种水性硬脂酸钙分散液的制备,具体包括如下步骤:
(1)根据硬脂酸钙分散液的配方比例,取7份聚乙烯醇和140份纯水加入到反应釜中,在90℃-95℃下充分溶解,之后加入90份硬脂酸铵、2份脂肪酸醇聚氧乙烯醚硫酸钠、1份烷基酚聚氧乙烯醚磺酸钠、4份壬基酚聚氧乙烯醚,恒温(80℃)预乳化搅拌1小时;
(2)取50份水水、30份熟石灰、2份分散剂配置成悬浮液,搅拌待用;
(3)将氢氧化钙悬浮液快速加入到釜料中,于80℃下搅拌反应2小时,反应完毕冷却至60℃,过均质机,加入消泡剂0.95份,搅拌均匀,出料。
实施例4
一种水性硬脂酸钙分散液的制备,具体包括如下步骤:
(1)根据硬脂酸钙分散液的配方比例,取8份聚乙烯醇和150份纯水加入到反应釜中,在90℃-95℃下充分溶解,之后加入100份硬脂酸铵、1.5份脂肪酸醇聚氧乙烯醚硫酸钠、1.5份烷基酚聚氧乙烯醚磺酸钠、2份壬基酚聚氧乙烯醚、2份异构十三醇聚氧乙烯醚,恒温(80℃)预乳化搅拌1小时;
(2)取50份水水、30份熟石灰、2份分散剂配置成悬浮液,搅拌待用;
(3)将氢氧化钙悬浮液快速加入到釜料中,于80℃下搅拌反应2小时,反应完毕冷却至60℃,过均质机,加入消泡剂1份,搅拌均匀,出料。
性能测试:
分别以上述实施例1-4所制备的水性硬脂酸钙分散液为实验组,按照企业标准检测粘度、固含量及稳定性,采用GB/T 456-2002标准,对其润滑效果进行检测,检测结果如下表1所示。
表1
固含量/% | 粘度/cps | 平滑度/s | 稳定性/天 | |
实施例1 | 41 | 82 | 200 | 90 |
实施例2 | 40.8 | 84 | 202 | 90 |
实施例3 | 41.7 | 85 | 205 | 90 |
实施例4 | 42 | 88 | 204 | 90 |
以上对本发明的具体实施例进行了详细描述,但其只是作为范例,本发明并不限制于以上描述的具体实施例。对于本领域技术人员而言,任何对本发明进行的等同修改和替代也都在本发明的范畴之中。因此,在不脱离本发明的精神和范围下所作的均等变换和修改,都应涵盖在本发明的范围内。
Claims (10)
3.根据权利要求1所述的水性硬脂酸钙分散液,其特征在于,所述乳化剂A为脂肪酸甲酯聚氧乙烯醚磺酸钠、烷基苯磺酸盐、脂肪醇聚氧乙烯醚硫酸钠、烷基酚聚氧乙烯醚磺酸钠中的一种或两种。
4.根据权利要求1所述的水性硬脂酸钙分散液,其特征在于,所述乳化剂B为壬基酚聚氧乙烯醚、异构十三醇聚氧乙烯醚、聚氧乙烯失水山梨醇单油酸酯、聚氧乙烯失水山梨醇单硬脂酸酯、失水山梨醇单油酸酯、失水山梨醇单硬脂酸酯中的一种或两种。
5.根据权利要求1所述的水性硬脂酸钙分散液,其特征在于,所述消泡剂为聚二甲基硅氧烷或聚醚-硅氧烷共聚物。
6.根据权利要求1所述的水性硬脂酸钙分散液,其特征在于,所述分散剂为聚丙烯酸钠。
7.一种如权利要求1-6任一项所述的水性硬脂酸钙分散液的制备方法,其特征在于,包括如下步骤:
(1)将聚乙烯醇和一部分纯水加入到反应釜中,在90℃-95℃下充分溶解,之后加入硬脂酸铵、乳化剂A和乳化剂B,恒温预乳化搅拌0.5-2小时;
(2)将另一部分纯水和熟石灰、分散剂配置成悬浮液,搅拌待用;
(3)将步骤(2)中悬浮液快速加入到步骤(1)的釜料中,于65-80℃下搅拌反应2小时,然后快速冷却至60℃,过均质机,加入消泡剂,搅拌均匀,出料,即得。
8.根据权利要求7所述的水性硬脂酸钙分散液的制备方法,其特征在于,步骤(1)中所述搅拌转速为200-300r/min,恒温温度为78-82℃,搅拌时间为1h。
9.根据权利要求7所述的水性硬脂酸钙分散液的制备方法,其特征在于,步骤(2)中所述纯水用量占纯水总量的1/4-1/3。
10.根据权利要求7所述的水性硬脂酸钙分散液的制备方法,其特征在于,步骤(3)中所述均质为低温高压均质,均质温度为10-15℃,均质压力为50-55MPa。
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