文章信息/Info

Title:

Research Progress on Preparation Technology of Spherical TiO2 Particles

文章編號:

1674-3962(2025)10-0960-09

作者:

鄭倩; 夏中華; 楊振華; 顏元東; 李烀; 孔紹曦; 張建平; 閆世成; 曹家凱; 夏煒煒; 馮建情

1. 南京大學現(xiàn)代工程與應(yīng)用科學學院，江蘇 南京 2100232. 南京大學信息管理學院，江蘇 南京 2100233. 江蘇聯(lián)瑞新材料股份有限公司，江蘇 連云港 2223464. 揚州大學物理科學與技術(shù)學院，江蘇 揚州 2250025. 西北有色金屬研究院，陜西 西安 710016

Author(s):

ZHENG Qian;  XIA Zhonghua;  YANG Zhenhua;  YAN Yuandong;  LI Hu;  KONG Shaoxi; ZHANG Jianping;  YAN Shicheng;  CAO Jiakai;  XIA Weiwei;  FENG Jianqing

1. College of Engineering and Applied Sciences, Nanjing University, Nanjing 210023, China2. School of Information Management, Nanjing University, Nanjing 210023,China3. Novoray Corporation, Lianyungang 222346,Chinaet al.

關(guān)鍵詞:

球形顆粒; 二氧化鈦; 化學法; 物理法; 相變動力學

Keywords:

spherical particle;  titanium dioxide;  chemical method;  physical method; transformation kinetics

分類號:

TB383;TM911

DOI:

10.7502/j.issn.1674-3962.202212018

文獻標志碼:

A

摘要:

金紅石相TiO₂因其高機械強度、高擊穿電壓及低介電損耗等優(yōu)異特性，常被用作聚合物基覆銅板的無機陶瓷填料，以改善基體的介電性能和力學性能。然而，兼具高流動性特征的球形TiO₂粉末的規(guī)模化制備仍面臨挑戰(zhàn)。系統(tǒng)評述了極具工業(yè)化潛力的球形TiO2化學與物理制備方法。在化學法方面（主要包括水熱法及水浴法），重點分析了可溶性鈦源種類、溫度場分布、反應(yīng)壓力及介質(zhì)環(huán)境等因素對鈦源水解動力學及其初級Ti(OH)4膠束組裝成球形結(jié)構(gòu)的動力學影響規(guī)律；在物理法方面（主要包括噴霧造粒與高溫熔融球化），深入探討了顆粒組裝球化技術(shù)與熱處理致密化等工藝參數(shù)對制備高質(zhì)量球形顆粒的影響規(guī)律，并總結(jié)了熱處理氣氛、雜質(zhì)元素的種類與含量、初始顆粒尺寸及熱處理工藝對銳鈦礦向金紅石相轉(zhuǎn)變動力學的影響規(guī)律。分析表明：化學法制備仍受困于難以精確控制鈦源水解動力學、顆粒尺寸均一性不足以及尺寸范圍可調(diào)性有限等科技挑戰(zhàn)；相比之下，物理法制備更易于獲得高球形度產(chǎn)品，且顆粒尺寸可在較寬范圍內(nèi)調(diào)節(jié)，但同樣面臨顆粒尺寸均一性不佳的技術(shù)瓶頸。

Abstract:

Rutile-phase TiO2 is frequently employed as an inorganic ceramic filler in polymer-based copper-clad laminates to enhance the dielectric and mechanical properties of the polymer matrix, owing to its superior characteristics such as high mechanical strength, high breakdown voltage, and low dielectric loss. However, the scalable production of spherical TiO2 powder that also possesses high flowability remains a significant challenge. This review systematically examines chemical and physical methods for synthesizing spherical TiO2 particles with high industrial potential. For chemical approaches (primarily hydrothermal and solvothermal methods), the analysis focuses on the influence of factors like soluble titanium source type, temperature field, reaction pressure, and reaction medium on the hydrolysis kinetics of the titanium precursor and the kinetics governing the assembly of primary Ti(OH)4 colloids into spherical structures. Regarding physical methods (mainly spray granulation and high-temperature melting spheroidization), the review investigates the impact of process parameters such as particle assembly/spheroidization techniques and heat treatments for particle densifying on the production of high-quality spherical particles. Additionally, it summarizes the effects of heat treatment atmosphere, type and concentration of impurity elements, particle size, and heat treatment parameters on the kinetics of the anatase-to-rutile phase transformation. Our analysis indicates that chemical synthesis routes still face significant scientific and technical challenges, including the difficulty in precisely controlling titanium precursor hydrolysis kinetics, inadequate particle size uniformity, and limited tunability of the particle size range. In contrast, physical methods readily yield products with high sphericity and allow particle size adjustment over a wide range, but they also encounter the technical bottleneck of insufficient particle size uniformity.