1 College of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510225; 2 Institute of Green Materials and Energy Technology, Guagnzhou Vocational College of Science and Technology, Guangzhou 510450
Abstract: The OMT/DFA/UPR hybrid materials and OMT/DFA/UPR composites were prepared by in-situ polymerization and mechanical blending respectively, which were composed of organic montmorillonite (OMT) containing epoxy group and C36 dimer fatty acid (DFA) modified unsaturated polyester resin (UPR). The material structure, dispersion degree of OMT, morphology of the tensile fracture surface, and elemental composition of the fracture surface were analyzed by FT-IR, XRD, SEM, and EDS. It was found that OMT grafted onto the DFA/UPR backbone by chemical bonds, and the material exhibited ductile fracture. In this study, the effects of the additive amount and method of OMT on the thermal stability and mechanical property of the material were investigated by TG, DSC, tensile test, flexural test, and hardness test. When 0.6% (mass fraction) OMT was added, the OMT/DFA/UPR hybrid material showed the optimum property, the initial thermal decomposition temperature, elongation at break, elasticity modulus, and flexural strength increased by 11.3%,30.6%,88.7%, and 26.9%, respectively, compared to DFA/UPR. However, in addition to the elongation at break of OMT/DFA/UPR composites increased by 22.8%, the remaining properties improved little or even decreased.
1 Xu X Q, Sailike D B N, Zhou Q, et al. Effect of a crystalline resin on the curing behavior of unsaturated polyesterresin systems[J]. Journal of Beijing University of Chemical Technology (Natural Science),2017,44(3):45(in Chinese). 许小强,赛力克·达尼拜,周权,等.结晶性树脂对不饱和聚酯树脂体系固化行为影响的研究[J].北京化工大学学报(自然科学版),2017,44(3):45. 2 Qi J Y, Du X B, Yu C S, et al. Conductive properties of Ag-graphene modificated unsaturated polyester resin[J]. Thermosetting Resin,2015,30(3):17(in Chinese). 齐佳钰,杜学斌,于朝生,等.覆银石墨烯改性不饱和聚酯树脂导电性能研究[J].热固性树脂,2015,30(3):17. 3 Li X, Yu H H. Kinetic analysis of thermal decomposition of flame-retarded polyester/natural brucite composites[J]. Journal of the Chinese Ceramic Society,2016,44(7):1046. 4 Chen X, Li K, Zheng S, et al. A new type of unsaturated polyester resin with low dielectric constant and high thermostability: Preparation and properties[J]. RSC Advances,2012,2(16):6504. 5 Gao M, Wang H, Wang Y, et al. Flame retardancy and mechanical properties of a novel intumescent flame-retardant unsaturated polyester[J]. Journal of Vinyl and Additive Technology,2016,22(3):350. 6 Fitzmaurice K, Ray D, Mccarthy M A. PET interleaving veils for improved fracture toughness of glass fibre/low-styrene-emission unsaturated polyester resin composites[J]. Journal of Applied Polymer Science,2016,133(3):42877. 7 Gao M, Chen S, Sun Y J, et al. Flame retardancy and smoke suppression of modified kaolin to unsaturated polyester resin[J]. The Chinese Journal of Process Engineering,2017,17(2):345(in Chinese). 高明,陈顺,孙英娟,等.改性高岭土对不饱和聚酯树脂的阻燃抑烟性能[J].过程工程学报,2017,17(2):345. 8 Motawie A M, Mansour N A, Kandile N G, et al. Study on the properties of carbon reinforced unsaturated thermoset polyester resin nanocomposites[J]. Social Science Electronic Publishing,2016,10(15):37. 9 Chakraborty H, Ray D, Chattopadhyay P P. Mechanical and tribological behavior of alumina and alumina-CNT reinforced hybrid unsaturated polyester composites[J]. Polymer Composites,2016,37(5):1577. 10 Lin J, Zhong B, Jia Z. In-situ fabrication of halloysite nanotubes/si-lica nano hybrid and its application in unsaturated polyester resin[J]. Applied Surface Science,2017,407:130. 11 Hashemi M, Shojaei A. Morphology development and mechanical properties of unsaturated polyester resin containing nanodiamonds[J]. Polymer International,2017,66(6):950. 12 Fuentes C A, Ting K W, Dupont-Gillain C, et al. Effect of humidity during manufacturing on the interfacial strength of non-pre-dried flax fibre/unsaturated polyester composites[J]. Composites Part A: Applied Science and Manufacturing,2016,84:209. 13 Liu W, Qiu R, Li K. Effects of fiber extraction, morphology, and surface modification on the mechanical properties and water absorption of bamboo fibers-unsaturated polyester composites[J]. Polymer Composites,2016,37(5):1612. 14 Sahin Y M, Cayli G, Cavusoglu J. Cross-linkable epoxidized malei-nated castor oil: A renewable resin alternative to unsaturated polyesters[J]. International Journal of Polymer Science,2016,1:1. 15 Costa C S M F, Fonseca A C, Moniz J. Soybean and coconut oil based unsaturated polyester resins: Thermomechanical characterization[J]. Industrial Crops and Products,2016,85:403. 16 Wu Y, Li K. Replacement of styrene with acrylated epoxidized soybean oil in an unsaturated polyester resin from propylene glycol, isophthalic acid, and maleic anhydride[J]. Journal of Applied Polymer Science,2016,133(8):43052. 17 Kargarzadeh H, Ahmad I, et al. Functionalized liquid natural rubber and liquid epoxidized natural rubber: A promising green toughening agent for polyester[J]. Journal of Applied Polymer Science,2015,132(3):40306. 18 Binti Mustaph S N H, Rahmat A R, Arsad A, et al. Flexural pro-perties of MMT reinforced unsaturated polyester/epoxidized palm oil biobased resin[J]. Advanced Materials Research,2015,1112:377. 19 Tang K Y, Huang X, Feng G Z, et al. Synthesis and properties of dimer fatty acid modified unsaturated polyester resin[J]. New Chemical Materials,2011,39(6):95(in Chinese). 唐克亚,黄雪,冯光炷,等.二聚脂肪酸改性不饱和聚酯的合成及性能研究[J].化工新型材料,2011,39(6):95. 20 Mao W, Li S H, Yang X J, et al. Study on the UV/wet heating dual-curing resin monomer based on the dimer fatty acids[J]. Thermosetting Resin,2017,32(2):12(in Chinese). 毛伟,李守海,杨雪娟,等.二聚脂肪酸基UV/湿热双重固化树脂单体的研究[J].热固性树脂,2017,32(2):12. 21 Tang K Y. Synthesis and properties of dimer fatty acid modified unsaturated polyester resin [D]. Zhengzhou: Henan University of Technology,2011(in Chinese). 唐克亚.DFA改性UPR的合成和性能研究[D].郑州:河南工业大学,2011. 22 George M, Kochimoolayil G E, Jayadas Narakathra H. Mechanical and thermal properties of modified kaolin clay/unsaturated polyester nanocomposites[J]. Journal of Applied Polymer Science,2016,133(13):43245. 23 Wu S, Wang L, Wu L, et al. Unsaturated polyester/montmorillo-nite nanocomposites with improved mechanical and thermal properties fabricated byin situ polymerization[J]. Journal of Applied Polymer Science,2017,134(35):45251. 24 Shah K J, Shukla A D, Shah D O, et al. Effect of organic modifiers on dispersion of organoclay in polymer nanocomposites to improve mechanical properties[J]. Polymer,2016,97:525. 25 Chaeichian S, Wood-Adams P M, Hoa S V. Fracture of unsaturated polyester and the limitation of layered silicates[J]. Polymer Engineering & Science,2015,55(6):1303. 26 Kusmono, Ishak Z A M. Effect of clay addition on mechanical pro-perties of unsaturated polyester/glass fiber composites[J]. International Journal of Polymer Science,2013,1:649. 27 Li R R. Study on unsaturated polyester resin nano-hybrid materials synthesized by in-situ polymerization [D]. Kaifeng: Henan University,2013(in Chinese). 李瑞瑞.原位聚合不饱和聚酯树脂纳米杂化材料的制备与性能研究[D].开封:河南大学,2013. 28 Rath S K, Sudarshan K, Patri M, et al. Accounting for the lack of nano-effect in a thermoset/clay nanocomposite: A positron annihilation study [C]∥11th International Workshop on Positron and Positronium Chemistry. India,2015:12038.
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2018, Vol. 32 
