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The impact of weathering acceleration testing on the properties of polymer composite HDPE/LLDPE/FIRE retardant additives using waste gypsum
Abstract
Gypsum is a by-product of the phosphoric acid production process from apatite ore. It is primarily stored in the disposal sites of manufacturing plants, posing environmental pollution due to its high content of untreated acids. Utilizing waste gypsum as a reinforcing and fire-retardant additive for polymer composite materials holds significant potential for applications in both industrial and environmental contexts. In this study, waste gypsum is treated to remove impurities and acids before being modified with ethylene bis(stearamide). The modified gypsum is blended with high-density polyethylene (HDPE), linear low-density polyethylene (LLDPE), and fire retardant additives at various ratios using a twin-screw PolyHaake mixer. The influence of modified and unmodified gypsum on the mechanical properties, fire resistance, and structural morphology of the polymer materials will be discussed. Additionally, the role of modified and unmodified gypsum particles in weathering resistance will be studied through the mechanical properties, fire resistance, and material structure. The application of waste gypsum contributes to the development of new fire-resistant materials, diversifies its consumption sources, and reduces environmental pollution.
References
- Thái Hoàng, Nguyễn Thúy Chinh: Sách chuyên khảo nâng cao khả năng kìm hãm và chống cháy polymer nhiệt dẻo bằng các phụ gia kích thước nano và micro.
- B.K. Kandola, L. Krishnan, J.R. Ebdon, Blends of unsaturated polyeste and phenolic resins for application as fire-resistant matrices in fibre-reinforced composites: Effects of added flame retardants, Polymer Degradation and Stability 106, 129-137 (2014).
- S. Bocchini, G.F. Camino, Retardancy of polymeic materials-chapter 4: Halogencontaining flame retardants, CRC PressTaylor & Francis Group, 75-100 (2010).
- I.V.D. Veen, J. Boer, Phosphorus flame retardants: Properties, production, environmental occurrence, toxicity and analysis, Chemosphere 88, 1119–1153 (2012).
- Nguyễn Vũ Giang, Đỗ Quang Trung, Trần Hữu Trung, Mai Đức Huynh, Nguyễn Quang Minh, “Nghiên cứu tính chất cơ lý và cấu trúc của vật liệu compozit nhựa nền polypropylene và thạch cao”, Tạp chí Hóa học, T52 (1), 101-106, 2014.
- Nguyen Vu Giang and Myung Yul Kim (2006), Ảnh hưởng của lớp phủ ngoài axit stearic lên màng lọc chất thải – thạch cao trong hỗn hợp PVC/thạch cao phế thải, Hội nghị khoa học lần thứ 20, ĐHBK Hà Nội, số 12. 237-241.
- A. Vimmrova, M. Keppert, L. Svoboda, R. Cerny, Lightweight thạch cao composites: design strategies for multi-functionality, Cem. Concr. Compos. 33 (2011) 84–89.
- A.A. Khalil, A. Tawfik, A.A. Hegazy, M.F. El-Shahat, Effect of some waste additives on the physical and mechanical properties of thạch cao plaster composites, Constr. Build. Mater. 68 (2014) 580–586.
- N.F. Medina, M.M. Barbero-Barrera, Mechanical and physical enhancement of thạch cao composites through a synergic work of polypropylene fiber and recycled isostatic graphite filler, Constr. Build. Mater. 131 (2017) 165–177.
- N.F. Medina, M.M. Barbero-Barrera, R. Bustamante, Improvement of the properties of thạch cao-based composites with recycled isostatic graphite powder from the milling production of molds for Electrical Discharge Machining (EDM) used as a new filler, Constr. Build. Mater. 107 (2016) 17–27.
- Jan F. Rabek (1989), Expẻimental Methods in polymer Chemistry, John wiley & sons, NewYork.
- Sittiporn Ngamsurat, et al. (2011), Curing characteristics of natural rubber filled with thạch cao, Energy Procedia, 8, 452-458.
- Marius Muariu, Lei Bonnaud, Paint Yoann, Gaelle Fontaine, Serge Bourbigot, Pholippe Dubois (2010), New trends in polylactide (PLA)-based materials: “Green” PLA- Calcium sulfate (nano) composites tailored with Flame retardant propreties. Polymer Degradation and Stability Volume 95, Issue3, papes 374-381.
- Cong Zhu, Jianxin Zhang, Jiahui Peng, Wenxiang Cao, Jiangsen Liu (2018), Physical and mechanical properties of thạch cao-based composites reinforced with PVA and PP fibers, Construction and Building Materials, Pages 695-705.
- T. Ramos, L.C. Mendes (2014), Recycled high-density polyethylenne/thạch cao composites: evaluation of the microscopic, thermal, flammability, and mechanical properties, Vol.7, No. 2, 199-208.
- Báo cáo tổng kết đề tài cấp Viện Khoa học và Công nghệ Việt Nam giai đoạn 2008-2009 (2009), “Nghiên cứu chế tao vật liệu compozit từ một số nhựa nhiệt dẻo (PE, PP, EVA)/tro bay nhà máy nhiệt điện và ứng dụng làm một số sản phẩm dân dụng”, Hà Nội.
- M. Muasher, M. Sain, “The efficacy of photostabilizers on the color change of wood filled plastic composites”, Polymer Degradation and Stability: Part 91 (2006), 1156-1165.
- Tran Huu Trung, Mai Duc Huynh, Tran Thi Mai, Nguyen Huu Dat, Nguyen Thi Dieu Linh, Nguyen Thi Thu Trang, Thai Hoang, Nguyen Vu Giang, ‘‘Study on UV resistance of high density polyethylene composite using waste gypsum’’, Journal of Catalysis and Adsorption, vol. 10 (1S) (2021), 153-157.