聚丙烯酸酯改性纤维素基脲醛树脂模塑料性能研究

doi:10.3969/j.issn.0253-2417.2015.02.008

Abstract

Abstract: Polyacrylate emulsion copolymer (PMBM) was prepared by seeded emulsion polymerization with methyl methacrylate (MMA),n-butyl acrylate (BA) and methyl acrylic acid (MAA) as monomers, which was used as toughening modifier for cellulose based urea-formaldehyde (UF) resin molding compound. The effects of PMBM’s glass transition temperature and contents on the mechanical properties, thermal stability and molding shrinkage rate of the compound were investigated. Moreover, the dynamic mechanical properties and microstructure of fracture surface were studied with dynamic mechanical analysis (DMA) and scanning electron microscope (SEM). The results showed that the toughening effect of PMBM (S3) with T_g of 40 ℃ was the most significant. The toughness of the modified system with 20 % PMBM was the best, and the shrinkage rate was 0.23%. And the impact strength and bending strength were 2.47 kJ/m² and 75.16 MPa, which were increased by 44.4% and 39.0% compared with those of the unmodified system, respectively. Thermal weight loss rate of molding plastic could be reduced by adding PMBM, so the thermal stability was improved. The DMA test results showed that S3 had the remarkable toughening effects on the molding compound, and its compatibility with urea-formaldehyde resin was better. In addition, fracture surface of molding compound modified with 20% S3 appeared as ductile fracture.

Key words: polyacrylate, cellulose based urea-formaldehyde resin, molding compound, toughening modification, mechanical properties, thermal stability

CLC Number:

TQ35

LIU Juan, NAN Jing-ya, WANG Chun-peng, LIU Yu-peng, CHEN Ri-qing. Plastics Performance of Cellulose Based Urea-formaldehyde Resins Modified by Poly (MMA-BA-MAA) Copolymer[J]. Chemistry and Industry of Forest Products, 2015, 35(2): 55-61.

References

[1] 关琦, 杨小燕, 许宁, 等.氨基模塑料冲击性能研究[J].工程塑料应用, 2011, 39(7):18-21. GUAN Qi, YANG Xiao-yan, XU Ning, et al.Study on impact strength of amino moulding plastic[J].Engineering Plastics Application, 2011, 39(7):18-21.
[2] 杨国华, 黄以民, 刘土生.国内外氨基模塑料的现状与发展趋势[J].热固性树脂, 2006, 21(1):49-52. YANG Guo-hua, HUANG Yi-min, LIU Tu-sheng.Situation of amino plastics in China and abroad and its development trends[J].Thermosetting Resin, 2006, 21(1):49-52.
[3] KOHLMAY M, ZUCKERSTATTER G, KANDELBAUER A.Modification of melamine-formaldehyde resins by substances from renewable resources[J].Journal of Applied Polymer Science, 2012, 124(6):4416-4423.
[4] PINTO G, MAAROUFIi A.Nonlinear electrical conductivity of tin-filled urea-formaldehyde-cellulose composites[J].Polymer Composites, 2005, 26(3):401-406.
[5] 周道兵, 储富祥, 王春鹏.氨基模塑料的改性[J].热固性树脂, 2006, 21(S1):6-8. ZHOU Dao-bing, CHU Fu-xiang, WANG Chun-peng.Modification of amino moulding compounds[J].Thermosetting Resin, 2006, 21(S1):6-8.
[6] ROUMEL E, PAPADOPOULOU E, PAVLIDOU E, et al.Synthesis, characterization and thermal analysis of urea-formaldehyde/nano SiO₂ resins[J].Thermochimica Acta, 2012, (527):33-39.
[7] BRAUN D, UNVERICHT R.Modification of melamine-formaldehyde moulding compounds with ethylene/vinyl acetate copolymers[J].Anqewandte Makromolekulare chemie, 1994, 222(1):61-87.
[8] 刘敬成, 周琼, 刘仁, 等.聚丙烯酸酯增韧改性环氧树脂的研究[J].热固性树脂, 2009, 24(6):8-11. LIU Jing-cheng, ZHOU Qiong, LIU Ren, et al.Toughening modification of epoxy resins with P(MMA-BA-GMA) copolymer[J].Thermosetting Resin, 2009, 24(6):8-11.
[9] ZHONG Jin-biao, LV Jian, WEI Chun.Mechanical properties of sisal fibre reinforced urea-formaldehyde resin composites[J].Express Polymer Letters, 2007, 1(10):681-687.
[10] HE Guang-bo, RIEDL B.Phenol-urea-formaldehyde cocondensed resol resins:Their synthesis, curing kinetics, and network properties[J].Journal of Polymer Science Part B:Polymer Physics, 2003, 41(16):1929-1938.
[11] LIU Juan, NAN Jing-ya, WANG Chun-peng, et al.Orthogonal experimental study on moulding conditions of amino moulding plastic[J].Advanced Materials Research, 2014, 900:596-600.
[12] 陈青, 宫大军, 魏伯荣, 等.端羧基丁腈橡胶改性环氧树脂的研究[J].绝缘材料, 2011, 44(2):30-38. CHEN Qing, GONG Da-jun, WEI Bo-rong, et al.Epoxy resin modified carboxyl-terminated nitrile rubber[J].Insulating Materials, 2011, 44(2):30-38.
[13] 刘俊先, 王汝敏, 孙曼灵.高性能热塑性树脂增韧酚醛树脂的研究[J].热固性树脂, 2004, 19(1):5-7. LIU Jun-xian, WANG Ru-min, SUN Man-ling.Study on phenolic resin toughened by thermoplastic resin with high properties[J].Thermosetting Resin, 2004, 19(1):5-7.
[14] 王威岗, 韦杰, 董长青.木质纤维热解的热重和反应动力学研究[J].可再生能源, 2007, 25(5):23-26. WANG Wei-gang, WEI Jie, DONG Chang-qing.Thermogravimetric and themokinetic study on pyrolysis of cellulose[J].Renewable Energy Resources, 2007, 25(5):23-26.
[15] 雷海芬, 王鹏, 张英民, 等.聚乙二醇增塑PLA/La-OMMT纳米复合材料的制备及性能研究[J].材料科学与工艺, 2009, 17(4):457-461. LEI Hai-fen, WANG Peng, ZHANG Ying-min, et al.Preparation and properties of plasticized poly(lactic acid) nano-composite with modified organo-montmorillonites[J].Materials Science and Technology, 2009, 17(4):457-461.

Plastics Performance of Cellulose Based Urea-formaldehyde Resins Modified by Poly (MMA-BA-MAA) Copolymer

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments

[1]	ZHANG Na, HU Lihong, GUO Yajun, ZHOU Yonghong. Characterization of Phenolic Foam Modified by Silanized Nano-SiO₂ [J]. Chemistry and Industry of Forest Products, 2019, 39(1): 53-60.
[2]	YAO Fengqi, TAO Junjun, WANG Haihui, HU Guoqing, CHEN Shuai, TAHIR Mudassir Hussian. Study of Pyrolysis Behavior and Reaction Mechanism of Tea Polyphenols [J]. Chemistry and Industry of Forest Products, 2017, 37(5): 19-27.
[3]	LIU Jianqun, WU Qiushan, YU Zhaofen. Chemical Constituents from Tripterygium wilfordii Hook. f. and Their Thermal Stability [J]. Chemistry and Industry of Forest Products, 2017, 37(2): 72-78.
[4]	HUO Shuping, CHEN Jian, WU Guomin, LIU Guifeng, JIN Can, KONG Zhenwu. Preparation and Properties of Complex Auto-catalytic Polyurethane Foams from Cardanol and Lignin [J]. Chemistry and Industry of Forest Products, 2017, 37(2): 115-120.
[5]	LI Xue-mei, LIU Shou-qing, HUANG Yuan-bo, YANG Xiao-qin, ZHENG Yun-wu, HUANG Gui-xiang, ZHENG Zhi-feng. Preparation of Carbon Foams with High Compressive Strength Derived from Phenolic Resin [J]. Chemistry and Industry of Forest Products, 2016, 36(5): 53-60.
[6]	BO Cai-ying, HU Li-hong, ZHOU Jing, ZHOU Yong-hong. Preparation and Characterization of Phenolic Foams Modified by Castor Oil-based Polyurethane Prepolymer [J]. Chemistry and Industry of Forest Products, 2015, 35(4): 8-14.
[7]	XIE Zhen-hua, ZHANG Ming-ming, JIN Li-wei. Hydrophobic and Rheological Properties of Acetylated Wood Flour Based Composites [J]. Chemistry and Industry of Forest Products, 2015, 35(1): 39-44.
[8]	LIU Juan, YU Xiang-dong, WANG Chun-peng, BU Hong-zhong, CHEN Ri-qing. Properties of Halogen-free Flame Retardant EVA Copolymer Emulsion Adhesive [J]. Chemistry and Industry of Forest Products, 2014, 34(5): 139-144.
[9]	XIAO Zhuo-bing;GUO Man-man;GUO Rui-ke;XIONG Li-zhi;. Thermal Stability, Decomposition Kinetics and Storage Time of Gutta-percha [J]. , 2013, 33(6): 7-13.
[10]	WANG Lei;XIE Yi-min;XIAO Yi;YANG Hai-tao;WANG Peng. Enzyme-catalyzed Crosslinking of Lignin and Polysaccharides in Fiberboard [J]. , 2011, 31(6): 66-72.
[11]	ZHENG Fei;SHI Xiao-ran;WU Mi-jia;WANG Jing;DING Shao-jun. A Novel Paper-strengthening Agent Containing Double Cellulose-binding Domains [J]. , 2010, 30(3): 61-65.
[12]	ZHU De-qin;SHENG Yu;LIU Xi-rong;XU Yan-rong. Study on Preparation of PVC/PEW-g-MAH/Bamboo Flour Composites [J]. , 2009, 29(1): 51-54.
[13]	CHEN Hong-lei;HUANG Feng;YANG Gui-hua;CHEN Jia-chuan. Progress in Wood and Non-wood Hemicellulose Research [J]. , 2008, 28(1): 119-126.
[14]	SHANG Shi-bin;WANG Yu;SONG Zhan-qian;WANG Dan . Thermal Stability of Bismaleimide-phenol Formaldehyde Resin Modified by Tung Oil-maleic Anhydride Adduct [J]. , 2007, 27(2): 33-35.
[15]	WANG Zhi-ling;WANG Zheng;REN Yi-ping. Synthesis and Characteristics of Interfacial Coupling Agents for Agro-residues/Recycled Plastics Composite [J]. , 2007, 27(1): 67-71.