Summary of Chemistry doctoral thesis: Manufacture, investigate the properties and morphology of composite material based on glass fiber E and nanosilica-reinforced epoxy resin

Manufacture composite based on epoxy reinforced by glass fiber with organ – modified nanosilica using organotitanate curing agent that have good mechanical strength, thermal stability, flame restraint ability; improve the toughness of epoxy resin by incorporating reinforcing agent such as organ – modified nanosilica and glass fiber with appropriate manufacturing condition and ratio.
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Summary of Chemistry doctoral thesis: Manufacture, investigate the properties and morphology of composite material based on glass fiber E and nanosilica-reinforced epoxy resin MINISTRY OF VIETNAM ACADEMY EDUCATION AND OF SCIENCE AND TRAINING TECHNOLOGY GRADUATE UNIVERSITY SCIENCE AND TECHNOLOGY ---------------------------- Ho Ngoc Minh PROJECT NAME: MANUFACTURE, INVESTIGATE THE PROPERTIES AND MORPHOLOGY OF COMPOSITE MATERIAL BASED ON GLASS FIBER E AND NANOSILICA-REINFORCED EPOXYRESIN Major: Theoretical Chemistry and Physical Chemistry Code: 9 44 01 19 SUMMARY OF CHEMISTRY DOCTORAL THESIS Ha Noi - 2019 The thesis was completed in : Graduate University Science and Technology/ Vietnam Academy of Science and Technology. Supervisors: 1) Assist. Prof. PhD. Tran Thi Thanh Van 2) Prof. PhD. Thai Hoang Reviewer 1: …………………………. Reviewer 2: …………………………. Reviewer 3: …………………………. The thesis will be defended at the doctoral thesis committee at the Academy level, meeting at the Graduate University of Science and Technology - Vietnam Academy of Science and Technology on ....’, date … month … year The thesis can be found at: - Library of Graduate University of Science and Technology - Vietnam National Library LIST OF PUBLICATIONS 1. Ngoc Minh Ho, Thi Thanh Van Tran, Thuy Chinh Nguyen, Hoang Thai Characteristics and morphology of nanosilica modified with isopropyl tri (dioctyl phosphate) titanate coupling agent, Journal of Nanoscience and Nanotechnology Vol18, No 5, 2018, pp. 3624- 3630(7). (ISI) 2. Ngoc Minh Ho, Thi Thanh Van Tran, Thuy Chinh Nguyen, Hoang Thai, Effect of surface-modified nanosilica on the characteristics, poroperties and morphology of silica/epoxy nanocomposites, The 6th Asian Symposium on Advanced Materials: Chemistry, Physics & Biomedicine of Functional and Novel Materials (ASAM6), pp 343- 348, 2017. 3. Ngoc Minh Ho, Thi Thanh Van Tran, Thuy Chinh Nguyen, Hoang Thai, Epoxy/titanate modified nanosilica composites: morphology, mechanical properties and fracture toughness. Tạp chí Khoa học Công nghệ, 56 (2A),133-140, 2018. 4. Hồ Ngọc Minh, Trần Thị Thanh Vân, Nguyễn Thúy Chinh, Thái Hoàng, Chế tạo, nghiên cứu đặc trưng, tính chất của nhựa epoxy đóng rắn bằng hợp chất cơ titan và một số hợp chất amin, Tạp chí Hóa học, 56(3), 401-406 (2018). 5. Ngoc Minh Ho, Thi Thanh Van Tran, Thuy Chinh Nguyen, Hoang Thai, Epoxy-silica nanocomposite: Creep resitance and toughening mechanisms, Emerging Polymer Technologies Summit (EPTS) and Emerging Material Technologies Summit 2018 (EPTS/EMTS'18) / 2018. 6. Ngoc Minh Ho, Thi Thanh Van Tran, Thuy Chinh Nguyen, Hoang Thai, Ternary nanocomposites based on epoxy, modified silica, and tetrabutyl titanate: Morphology, characteristics, and kinetics of the curing process, Inc. J. Appl. Polym. Sci. 2019, 136, 47412. (ISI) INTRODUCTION 1. Necessity of the thesis Polymer composite based on glass fiber E-reinforced epoxy resin were commonly used in transportation, electronics, mechanical engineering, machine, building, and chemicals … However, the disadvantages and limitations affecting the application of this composite material are their brittleness and poor impact resistance. Therefore, improving toughness / toughening for epoxy resins is very important. Some nanoscale additives have been applied to manufacture epoxy-based composites as products for industries. Among nano additives, surface modification of nanosilica with organic coupling agent is one of the most commonly used for polymers, rubbers, and plastics because it is easy to find, easy to use, relatively cheap Titanium-based hardened epoxy resin can work long time at high temperature. Research on composite materials based on epoxy / glass fiber combined with surface modification of nanosilica by titanate coupling and titanium curing agent is very new, promising to create material system with high mechanical, physical, thermal properties. And good electrical. Therefore, the PhD student chooses the thesis topic Manufacture, investigate the properties and morphology of composite material based on glass fiber E and nanosilica-reinforced epoxy resin”. 2. Purpose of the thesis Manufacture composite based on epoxy reinforced by glass fiber with organ – modified nanosilica using organotitanate curing agent that have good mechanical strength, thermal stability, flame restraint ability. Improve the toughness of epoxy resin by incorporating reinforcing agent such as organ – modified nanosilica and glass fiber with appropriate manufacturing condition and ratio. 3. The main research content of the thesis Study on grafting nanosilica surface with KR-12 titanate coupling agent to enhance their dispersion ability in epoxy resin. 1 Study on curing reaction of epoxy resin YD-128 by tetrabutyl titanate and properties of post-hardening products. Manufacture, investigate the properties and morphology of nanocomposite material based on epoxy, nanosilica and tetrabutyl titanate. Manufacture, investigate the properties and morphology of composite material based on glass fiber E and nanosilica-reinforced epoxy resin. 4. New contributions of the thesis Successfully grafted K200 nanosilica particle surface with KR- 12 titanate coupling agent. Nanosilica nanoparticles after modified have good dispersion ability in epoxy resin. We studied the curing reaction of YD-128 epoxy resin with tetrabutyl titannate and clarified the advantages of this curing agent compared to conventional amine compounds Explained the positive effect of KR-12/nanosilica to mechanical properties, dynamic mechanical properties, toughness, toughness, toughening mechanism of composite material based on epo ...