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Study on Modification of Nano Alumina and Its Enhancement of Physical Properties of Water-Based Acrylic Coatings

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  • (1. Anhui Provincial Engineering Research Center for Green Coatings High-Performance Additives,

    School of Energy Materials and Chemical Engineering, Hefei University, Hefei 230601, China;

    2. Hefei Aigo Additives Technology Co., Ltd., Hefei 230601, China)

Received date: 2023-05-23

  Revised date: 2023-06-12

  Accepted date: 2023-07-20

  Online published: 2023-12-25

Abstract

For enhancing the physical properties of water-based acrylic resin coating, a green modified water-based nano-alumina dispersion was successfully prepared by regulating mass fraction of anti-sedimentation dispersant under the condition of ultrasonication. Subsequently, the water-based nano alumina dispersion was characterized, and the physical properties of commercial water-based acrylic resin composite coating mixed with the dispersion were tested. Results showed that under the conditions of a dispersant mass fraction of 0.50% and an ultrasonic dispersion time of 0.5 h, the storage stability time of the prepared water-based nano-alumina dispersion was greater than 90 d. Besides, after adding 4%(mass fraction) water-based nano-alumina dispersion to commercially available water-based acrylic resin coatings, the wear-resistant rotation number of the as-obtained coating increased from less than 5 r to more than 15 r, and the scratch resistance load increased from 1.10 kg to 2.00 kg.

Cite this article

LI Minghua, GAO Jie, JIANG Dongming, YU Shujun, DU Zhiqiang . Study on Modification of Nano Alumina and Its Enhancement of Physical Properties of Water-Based Acrylic Coatings[J]. Materials Protection, 2023 , 56(11) : 88 -93 . DOI: 10.16577/j.issn.1001-1560.2023.0267

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