Tăng cường khả năng chịu bức xạ UV của nhựa polyester không no dựa trên nano TiO2: Ứng dụng trong sản xuất đá thạch anh nhân tạo=Enhancing the ultraviolet radiation resistance of unsaturated polyester resin based on nano TiO2: Application in the production of artificial quartz stone

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Tác giả: Quang Thức Đồng

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Khoa học và Công nghệ Việt Nam, 2025

Mô tả vật lý: tr.54-62

Bộ sưu tập: Metadata

ID: 478465

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Polymer nanocomposite material (PNC) based on the unsaturated polyester resin (UPR) and nano TiO2 (PNC UPR/ TiO2 material) is synthesised by the in-situ method, which allows the incorporation of inorganic nanoparticles into the polymer chain right from the beginning of the synthesis process, enhancing nanoparticle dispersion and enabling bond formation during polymer chain synthesis. The surface morphology, structure and properties of the PNC UPR/TiO2 material were investigated. The results show that the successfully synthesised PNC UPR/TiO2 material enhances bending strength by 16.4% and tensile strength by 7.2%. The obtained PNC UPR/TiO2 material has enhanced thermal stability, especially with the UPR/TiO2 0.50% sample, which shows an increase in T10, T50 and Tg values of 11.4%
the storage modulus (E’) increased by 57.3% compared to the UPR resin sample. The newly obtained material demonstrates 62.3% higher UV radiation resistance than the UPR resin system after 1,000 hours of UV irradiation. Applying PNC UPR/TiO2 0.50% material as a base resin in manufacturing high-quality quartzbased artificial stone products helps improve UV resistance by 20% and retains surface colour for products that are less susceptible to deformation compared to when using UPR adhesive.Vật liệu polymer nanocomposite (PNC) trên cơ sở nhựa polyester không no (UPR) và nano TiO2 (vật liệu PNC UPR/ TiO2) được tổng hợp bằng phương pháp in-situ, giúp tích hợp các hạt nano vô cơ vào mạch polymer ngay từ giai đoạn đầu của quá trình tổng hợp, giúp tăng khả năng phân tán các hạt nano và có thể tạo liên kết ngay trong quá trình hình thành mạch polymer. Các đặc trưng về hình thái bề mặt, cấu trúc và tính chất của vật liệu PNC UPR/ TiO2 đã được khảo sát. Kết quả cho thấy, vật liệu PNC UPR/TiO2 được tổng hợp thành công giúp tăng độ bền uốn lên 16,4% và độ bền kéo lên 7,2%. Vật liệu PNC UPR/TiO2 thu được có độ bền nhiệt được tăng cường, đặc biệt là mẫu UPR/TiO2 0,50% thể hiện ở giá trị T10, T50 và Tg tăng 11,4%
module tích trữ (E’) tăng 57,3% so với mẫu nhựa UPR. Vật liệu mới thu được thể hiện khả năng chịu bức xạ UV cao hơn 62,3% so với hệ nhựa nền UPR sau 1.000 giờ chiếu UV. Việc sử dụng vật liệu PNC UPR/TiO2 0,50% làm nhựa nền trong chế tạo đá nhân tạo gốc thạch anh cao cấp giúp tăng khả năng chịu UV lên 20% và giữ được màu sắc bề mặt cho sản phẩm ít bị biến đổi so với khi sử dụng nhựa UPR.

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