Nghiên cứu quá trình khâu mạch và tính chất của lớp phủ nanocompozit polyuretan-acrylic/R-TiO2. I- Nghiên cứu quá trình khâu mạch của hệ nhựa Acrylic polyol/polyisoxyanat khi có hạt nano R-TiO2

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Tác giả: Phi Hùng Đào, Minh Thành Đỗ, Xuân Hiền Lê, Văn Phúc Mạc, Anh Hiệp Nguyễn, Thị Việt Triều Nguyễn, Thiên Vương Nguyễn, Văn Thành Trịnh

Ngôn ngữ: vie

Ký hiệu phân loại: 620.5 Nanotechnology

Thông tin xuất bản: Hóa học, 2014

Mô tả vật lý: 765-769

Bộ sưu tập: Metadata

ID: 503868

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Chủ đề

The cross-linking process of the acrylic polyol resin (HSU.1908)/polyisocyanate (N.75) system in the presence of rutile TiO2 (R-TiO2) nanoparticles had been studied by fourier-transform infrared spectroscopy (FTlR), pendulum hardness testing and gel fraction analysis. It was found that the cross-linking process was insignificantly influenced by the R-TiO2 nanoparticles. The conversion of isocyanate groups, the formation of urethane groups and the change of pendulum hardness of the coatings had rapidly occurred within the first 4 days. The optimum cross-linking time was 4 days. The highest value of pendulum hardness was 0.92 at the 2 percent content of R-TiO2 nanoparticles and the gel fraction was 97 percent.

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