Two Birds with One Stone: Preparation of 4, 4-Diaminodiphenylmethane Functionalized GO@SiO2 with Mechanical Reinforcement and UV Shielding Properties and Its Application in Thermoplastic Polyurethane

This study prepared 4,4-diaminodiphenylmethane (DDM)-functionalized graphene oxide (GO)@silica dioxide (SiO2) nano-composites through amidation reaction and low-temperature precipitation. The resulting modified GO, that was DDM−GO@SiO2. The study found that DDM−GO@SiO2 showed good dispersion and com...

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Bibliographic Details
Published in:Polymers 2021-12, Vol.13 (23), p.4220
Main Authors: Ding, Guoxin, Tai, Hongxu, Chen, Chuanxin, Sun, Chenfeng, Tang, Zhongfeng
Format: Article
Language:English
Subjects:
Chemical precipitation
Epoxy resins
Graphene
Hydrochloric acid
Low temperature
Mechanical properties
Methylene dianiline
Nanocomposites
Nanoparticles
Polymers
Polyurethane resins
Potassium
Scanning electron microscopy
Shielding
Silica
Silicon dioxide
Spectrum analysis
Substrates
Tensile strength
Urethane thermoplastic elastomers
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Summary:This study prepared 4,4-diaminodiphenylmethane (DDM)-functionalized graphene oxide (GO)@silica dioxide (SiO2) nano-composites through amidation reaction and low-temperature precipitation. The resulting modified GO, that was DDM−GO@SiO2. The study found that DDM−GO@SiO2 showed good dispersion and compatibility with thermoplastic polyurethane (TPU) substrates. Compared with pure TPU, the tensile strength of the TPU composites increased by 41% to 94.6 MPa at only 0.5 wt% DDM−GO@SiO2. In addition, even when a small amount of DDM−GO@SiO2 was added, the UV absorption of TPU composites increased significantly, TPU composites can achieve a UV shielding efficiency of 95.21% in the UV-A region. These results show that this type of material holds great promise for the preparation of functional coatings and film materials with high strength and weather resistance.
ISSN:2073-4360
2073-4360
DOI:10.3390/polym13234220