| 四元高分子分散剂的合成及其在研磨重质碳酸钙中的应用 |
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| 引用本文： | 柳宜强,沈一丁,费贵强,李刚辉.四元高分子分散剂的合成及其在研磨重质碳酸钙中的应用[J].中华纸业,2009,30(2). |
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| 作者姓名： | 柳宜强 沈一丁 费贵强 李刚辉 |
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| 作者单位： | 陕西科技大学化学与化工学院,西安,710021 |
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| 基金项目： | 国家自然科学基金，教育部高等学校博士学科点专项科研基金 |
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| 摘 要： | 以甲基丙烯酸、衣康酸、烯丙基磺酸钠和苯乙烯为单体,通过水溶液自由基共聚合,制备了一种四元高分子分散剂.研究了分散剂用量、相对分子质量及其PH值对不同质量分数的重质碳酸钙粘度、粒径和稳定性的影响.分散剂相对分子质量为10045,PH值为9.0时,对研磨GCC分散效果最好.分散剂适宜高固含量GCC悬浮液的制备.研磨质量分数为70%的GCC,球磨时间为30min,使其粒径为1.9μm,粘度降至201mPa·s,所需分散剂的用量为0.15%,其悬浮液沉降体积百分数(7d后测定)为60.5%.
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| 关 键 词： | 分散剂 重质碳酸钙 研磨 粘度特性 |
Synthesis and its application of tetrapoly-meric dispersant in GCC grinding |
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| LIU Yi-qiang,SHEN Yi-ding,FEI Gui-qiang,LI Gang-hui.Synthesis and its application of tetrapoly-meric dispersant in GCC grinding[J].China Pulp & Paper Industry,2009,30(2). |
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| Authors: | LIU Yi-qiang SHEN Yi-ding FEI Gui-qiang LI Gang-hui |
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| Affiliation: | School of Chemistry and Chemical Engineering;Shaanxi University of Science and Technology;Xi'an 710021;China |
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| Abstract: | A tetrapolymeric dispersant was prepared through water solution radical copolymerization with methacrylic acid,itaconic acid,sodium allyl sulfonate and styrene as monomer.The effect of dosage,relative molecular mass and pH value of the dispersant on viscosity,diameter of particles and stability of fine ground calcium carbonate of different mass fraction was studied.The best dispers-ing effect of GCC could be gained using the dispersant with the rel-ative molecular mass of 10045 and pH of 9 and the dispersan... |
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| Keywords: | dispersant GCC grinding viscocity properties |
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