Journal of South China University of Technology (Natural Science Edition) ›› 2015, Vol. 43 ›› Issue (2): 144-150.doi: 10.3969/j.issn.1000-565X.2015.02.022

• Materials Science & Technology • Previous Articles    

Infiltrants for Post-Processing of Three-Dimension Printing Specimens

Cheng Jiang1 Wu Jiao-jiao1 Xu Shou-ping1 Zhou Dong-wei2 Zhou Liang3   

  1. 1． School of Chemistry and Chemical Engineering，South China University of Technology，Guangzhou 510640,Guangdong，China;2． Foshan Heyu Chemical Co． ，Ltd． ，Foshan 528313，Guangdong，China; 3． Department of Light Chemical Engineering，Guangdong Industry Technical College，Guangzhou 510300，Guangdong，China
  • Received:2014-07-01 Revised:2014-09-05 Online:2015-02-25 Published:2014-12-31
  • Contact: 程江(1965-)，男，博士，教授，主要从事精细化工研究． E-mail:cejcheng@scut.edu.cn
  • About author:程江(1965-)，男，博士，教授，主要从事精细化工研究．
  • Supported by:
    Supported by the Project of Integration of Industry，Education and Ｒesearch of Guangdong Province and Ministry of Education of China(2012B091100442)

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Abstract: This paper deals with the water resistance，compressive strength，dimensional deviation and surficial mi-crostructure of gypsum-based three-dimension printing specimens affected by filling enhancers(namely infiltrant A)，base materials of infiltrant B，dosage of waterborne epoxy emulsion in infiltrant B and immersion time． The re-sults show that(1) nano-silicone superhard curing agent is the most suitable enhancer for infiltrant A because it sig-nificantly improves the compressive strength of printing specimens; (2) waterborne polyurethane emulsion PU-202B is the most appropriate base material of infiltrant B; (3) the addition of waterborne epoxy emulsion in infiltrant B improves the compressive strength and water resistance of printing specimens，but excess waterborne epoxy emulsion may result in a dimensional deviation of the specimens; (4) the best immersion time for the three-dimension print-ing specimens into infiltrants A and B is 130s and 35s，respectively; and (5) after being immersed in infiltrant A and subsequently in infiltrant B，the specimens are of high compressive strength，weak water absorption，smooth surface and strong bond capability．

Key words: three-dimension printing, printing specimen, post-processing infiltrant, compressive strength, water absorption

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