欢迎访问《硅酸盐通报》官方网站,今天是

硅酸盐通报 ›› 2010, Vol. 29 ›› Issue (1): 49-52.

• • 上一篇    下一篇

pH值及分散剂对沉淀法制备β-磷酸三钙粉体性能的影响

赵娜如;康海峰;刘梦姣;孙原龙;李培巍   

  1. 华南理工大学特种功能材料教育部重点实验室,广州,510640;华南理工大学材料科学与工程学院,广州,510640;华南理工大学材料科学与工程学院,广州,510640;华南理工大学化学与化工学院,广州,510640
  • 出版日期:2010-02-15 发布日期:2021-01-18
  • 基金资助:
    国家自然科学基金(50702023;50732003;50830101;x2clB5081570)%国家大学生创新性实验计划

Influence of pH Value and Dispersant on the β-calcium Phosphate Powders Prepared by Precipitation Method

ZHAO Na-ru;KANG Hai-feng;LIU Meng-jiao;SUN Yuan-long;Li Pei-wei   

  • Online:2010-02-15 Published:2021-01-18

摘要: 以(NH_4)_2HPO_4和Ca(NO_3)_2·4H_2O为基本原料,加入一定量的聚乙二醇作为分散剂,采用液相沉淀法制备磷酸钙盐前驱体,经过850 ℃高温煅烧制得结晶度较高的β-磷酸三钙(β-TCP)粉体.采用XRD、TEM和粒度分析等手段对粉体进行测试,分别研究了pH值、分散剂聚乙二醇(PEG)的分子量及加入量对产物物相组成、团聚程度的影响.结果表明,控制pH值为7~8,加入1.5%的PEG6000作为分散剂,可制得纯度高、结晶状态良好、分散性好的β-TCP粉体.

关键词: β-TCP粉体;液相沉淀法;分散剂

Abstract: Calcium phosphate was synthesized by precipitation methods with (NH_4)_2HPO_4 and Ca(NO_3)_2·4H_2O , Polyethylene glycol(PEG) was used as dispersant. The β-TCP powders was obtained after calcined at 850 ℃. The heat-treated powders were analyzed by X-ray diffraction (XRD), transmission electron microscopy (TEM) and particle size analysis. The influence of pH value and the molecular weight of PEG on the phase composition, agglomeration were investigated. It was found that the β-tricalcium phosphate powders with high purity, fine crystalline and steady dispersivity could be synthesized when the pH value is 7-8 and the molecular weight of PEG is 6000.

Key words: β-calcium phosphate;liquid phase co-precipitation;dispersant

中图分类号: