纳米TiO2对环氧树脂表面施胶剂的增韧效果

doi:10.3969/j.jssn.1000-2006.2012.01.022

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南京林业大学学报（自然科学版） ›› 2012, Vol. 36 ›› Issue (01): 105-109.doi: 10.3969/j.jssn.1000-2006.2012.01.022

纳米TiO2对环氧树脂表面施胶剂的增韧效果

李媛媛,戴红旗^*,万丽

南京林业大学, 江苏省制浆造纸科学与技术重点实验室，江苏南京210037

出版日期:2012-01-30 发布日期:2012-01-30
基金资助:
收稿日期：2011-05-30修回日期：2011-09-27基金项目：国家自然科学基金项目（30871995）；江苏省高校自然科学研究重大项目（09KJA220002）第一作者：李媛媛，硕士生。*通信作者：戴红旗，教授，博士。Email: daihq@vip.sina.com。

Investigation on the toughening effect of nanoTiO2 to epoxy resin surface size

LI Yuanyuan, DAI Hongqi*, WAN Li

Jiangsu Province Key Lab of Pulp and Paper Science and Technology, Nanjing Forestry University, Nanjing 210037, China

Online:2012-01-30 Published:2012-01-30

摘要/Abstract

摘要： 以超声波法将不同比例的纳米TiO2分散在环氧树脂乳液中，增韧环氧树脂表面施胶剂，提高环氧树脂表面施胶剂的韧性和机械强度。研究了影响纳米TiO2在环氧树脂乳液中均匀分散的因素，并对改性后环氧树脂涂膜进行检测。结果表明改性环氧树脂的条件为：超声时间30 min、环氧树脂温度50 ℃、超声功率100 %、环氧树脂质量分数60 %、纳米TiO2添加量3 %。此条件下改性环氧树脂乳液粒径为169 μm，改性环氧树脂的不透明度、储能模量与损耗因子明显提高，玻璃化温度略有降低。将改性环氧树脂用于表面施胶，纸张纵向抗张强度、表面结合强度、耐折度有明显提高，挺度略有下降。

Abstract: The toughness and mechanical strength of epoxy resin surface size were improved by adding some nanoTiO2 to epoxy resin emulsion dispersed with ultrasonic method. Process parameters were varied systematically with the aim of achieving an optimum dispersion process. The results showed that an optimum dispersion with epoxy resin particle size of 169 μｍ was achieved when the dispersion time was 30 min, the temperature of epoxy resin was 50 ℃, the ultrasonic amplitude was 100 %, the mass fraction of epoxy resin was 60%, and 3% nanoTiO2 was incorporated. And the opacity, storage modulus and loss factor of modified epoxy resin increased obviously while tend decreased slightly. Compared with unmodified epoxy resin, modified epoxy resin surface sizing agent had a clear positive effect on CD tensile strength, pickstrength and folding strength, where as a little negative influence on stiffness.

中图分类号:

TS827.5

李媛媛,戴红旗,万丽. 纳米TiO2对环氧树脂表面施胶剂的增韧效果[J]. 南京林业大学学报（自然科学版）, 2012, 36(01): 105-109.

LI Yuanyuan, DAI Hongqi*, WAN Li. Investigation on the toughening effect of nanoTiO2 to epoxy resin surface size[J].Journal of Nanjing Forestry University (Natural Science Edition), 2012, 36(01): 105-109.DOI: 10.3969/j.jssn.1000-2006.2012.01.022.

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纳米TiO2对环氧树脂表面施胶剂的增韧效果

Investigation on the toughening effect of nanoTiO2 to epoxy resin surface size

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