| PAN Yue,WEN Qing-zhen,ZHU Jin-hua.Preparation and Properties of Modified Hollow Glass Beads Grafting Fluororesin on Surface[J],49(5):335-342 |
| Preparation and Properties of Modified Hollow Glass Beads Grafting Fluororesin on Surface |
| Received:August 29, 2019 Revised:May 20, 2020 |
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| DOI：10.16490/j.cnki.issn.1001-3660.2020.05.040 |
| KeyWord:HGB surface modification fluororesin hydrophilicity thermal insulation tensile strength |
| Author | Institution |
| PAN Yue |
Teaching and Research Section of Chemistry and Material, Naval University of Engineering, Wuhan , China |
| WEN Qing-zhen |
Teaching and Research Section of Chemistry and Material, Naval University of Engineering, Wuhan , China |
| ZHU Jin-hua |
Teaching and Research Section of Chemistry and Material, Naval University of Engineering, Wuhan , China |
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| Abstract: |
| This work aims to explore the performance changes of HGB, hollow glass beads (HGB) was modified by grafting fluororesin, and the fluororesin coatings were prepared with HGB as filler. HGB were treated by NaOH solution, γ-aminopropyltriethoxysilane (KH550), hexamethylenediisocyanate (HDI) trimer and fluororesin in turn. The FTIR, SEM and EDS results all confirmed that HGB were successfully grafted with fluororesin. Heat insulation coatings were prepared by using surface grafted fluororesin HGB (F-HGB) as filler and FEVE fluororesin as matrix. The effects of modification temperature and time of HGB on the hydrophobic properties of F-HGB and the effects of HGB particle size, addition amount, modification and coating thickness on the hydrophobic properties, thermal insulation properties and tensile strength of coatings were investigated. The surface grafting fluororesin HGB was successfully prepared. The static contact angle between F-HGB and pure water could reach 149.21° after reaction of 8 h at 50 ℃. Compared with HGB/fluororesin coatings, the hydrophobic, thermal insulation and tensile strength of F-HGB/fluororesin coatings were greatly improved. When the F-IM16K content was 20 phr, the contact angle between F-HGB/fluororesin coating and water was 100°, and the temperature difference was 7.4 ℃, and the tensile strength was 10.39 MPa. When F-K1 content was 20 phr, the thermal conductivity of F-HGB/fluororesin coating was 0.0701 W/(m•K). At the same time, the thermal insulation performance of the coatings increased with the increase of HGB particle size and addition amount, and the tensile strength decreased. However, surface modification could effectively improve the damage of HGB to the mechanical properties of the matrix. F-HGB has various functions and can be used as functional filler to prepare multifunctional coatings with excellent hydrophobic, thermal insulation and mechanical properties. |
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