利用KH560和纳米SiO2采用“一步法”反应挤出增黏PET

doi:10.16085/j.issn.1000-6613.2019-1621

摘要/Abstract

摘要：

以KH560（3-缩水甘油基氧基丙基三甲氧基硅烷）和纳米SiO₂颗粒复配作为扩链剂，采用“一步法”反应挤出增黏聚对苯二甲酸乙二醇酯（PET）。KH560和SiO₂的添加量均为PET质量分数的2.5%时，增黏效果最好。并且在PET不干燥的情况下，KH560和SiO₂复配也可增加PET的黏度，可用作PET的扩链剂和防水解剂。经透射电镜观察，发现SiO₂在PET中的分散状况良好。用FTIR研究了KH560、SiO₂、PET三者之间的反应机理。用TGA分析了SiO₂的接枝率，发现接枝率高达72.0%。用DSC对PET/纳米SiO₂复合材料的结晶行为进行了研究，并讨论了结晶行为对力学性能的影响。当KH560和SiO₂的添加量均为PET质量分数的2.5%时，结晶度最低，综合力学性能最好。

关键词: 聚对苯二甲酸乙二醇酯, 二氧化硅, 反应挤出, 增黏, 扩链剂

Abstract:

KH560 (3-glycidyloxypropyltrimethoxysilane) and nano-SiO₂ particles were filled into PET melt by extrusion process to increase the melt viscosity of the PET. When the KH560 and the SiO₂ particles were both filled at 2.5%(mass ratio), the melt viscosity-increasing effect was the best. Moreover, even the PET was not dried, the PET melt viscosity can also be improved by such chain extender, implying that it can be used as a regent to prevent the hydrolytic degradation of PET. Transmission electron microscopy imaging showed that the dispersion of nano-SiO₂in PET was well. The reaction mechanism between KH560, SiO₂ and PET was confirmed by FTIR. The grafting of PET molecules to SiO₂ nanoparticles was analyzed by TGA, and the graft ratio was 72%. The crystallization behavior of the PET/ SiO₂ composites was studied by DSC. When the KH560 and SiO₂ nanoparticles were both filled at 2.5% (mass ratio), the crystallinity of PET/nano-SiO₂ composite is the lowest and the comprehensive mechanical properties were the best.

Key words: polyethylene terephthalate, silicon dioxide, reaction extrusion, viscosity increasing, chain extender

中图分类号:

TQ32

胡肖霞, 王亮, 冯杰. 利用KH560和纳米SiO₂采用“一步法”反应挤出增黏PET[J]. 化工进展, 2020, 39(7): 2768-2774.

Xiaoxia HU, Liang WANG, Jie FENG. Increase the viscosity of PET by one-step reaction extrusion with KH560 and nano-SiO₂ as chain extender[J]. Chemical Industry and Engineering Progress, 2020, 39(7): 2768-2774.

参考文献

1	TORRES N, ROBIN J J, BOUTEVIN B. Chemical modification of virgin and recycled poly(ethylene terephthalate) by adding of chain extenders during processing[J]. Journal of Applied Polymer Science, 2001, 79(10): 1816-1824.
2	MAKKAM S, HARNNARONGCHAI W. Rheological and mechanical properties of recycled PET modified by reactive extrusion[J]. Energy Procedia, 2014, 56: 547-553.
3	NOFAR M, O?UZ H. Development of PBT/recycled-PET blends and the influence of using chain extender[J]. Journal of Polymers and the Environment, 2019, 27(7): 1404-1417.
4	YANG Z P, XIN C L, MUGHAL W, et al. High-melt-elasticity poly(ethylene terephthalate) produced by reactive extrusion with a multi-functional epoxide for foaming[J]. Journal of Applied Polymer Science, 2017, 135(8): 45805.
5	刘少峰, 夏艳平, 李强, 等. ADR/HDI联用扩链剂对PET性能的影响[J]. 现代塑料加工应用, 2018, 30(6): 21-24.
5	LIU S F, XIA Y P, LI Q, et al. Effect of combined ADR/HDI chain extender on the properties of polyethylene terephthalate[J]. Modern Plastics Processing and Applications, 2018, 30(6): 21-24.
6	黎嘉炜. 无机粉体增黏增强改性r-PET的研究[D]. 广州: 华南理工大学, 2015.
6	LI J W. Study on intrinsic viscosity, crystallization and mechanical properties of r-PET/inorganic powder composite[D]. Guangzhou: South China University of Technology, 2015.
7	PARVINZADEH M, MORADIAN S, RASHIDI A, et al. Surface characterization of polyethylene terephthalate/silica nanocomposites[J]. Applied Surface Science, 2010, 256(9): 2792-2802.
8	陈凯玲, 赵蕴慧, 袁晓燕. 二氧化硅粒子的表面化学修饰——方法、原理及应用[J]. 化学进展, 2013, 25(1): 99-108.
8	CHEN K L, ZHAO W H, YUAN X Y. Chemical modification of silica: method, mechanism, and application[J]. Progress in Chemistry, 2013, 25(1): 99-108.
9	SHECHTER L, WYNSTRA J. Glycidyl ether reactions with alcohols, phenols, carboxylic acids, and acid anhydrides[J]. Industrial and Engineering Chemistry, 1956, 48(1): 86-93.
10	谢庆兰, 张增佑, 王真, 等. 羧酸和环氧化合物加成酯化反应的新型催化剂的研究[J]. 催化学报, 1980, 1(2): 71-75.
10	XIE Q L, ZHANG Z Y, WANG Z, et al. Study on new catalysts for addition and esterification of carboxylic acids and epoxy compounds[J]. Chinese Journal of Catalysis, 1980, 1(2): 71-75.
11	LIU Y, TANG Z H, CHEN Y, et al. Engineering of β-hydroxyl esters into elastomer-nanoparticle interface toward malleable, robust, and reprocessable vitrimer composites[J]. ACS Applied Materials & Interfaces, 2018, 10(3): 2992-3001.
12	冯跃战. 聚碳酸酯SiO₂纳米复合材料的制备及力学与热性能研究[D].郑州: 郑州大学, 2015.
12	FENG Y Z. Preparation, mechanical and thermal properties of polycarbonate/SiO₂ nanocomposites[D]. Zhengzhou: Zhengzhou University, 2015.
13	KARSLI N G. A study on the fracture, mechanical and thermal properties of chain extended recycled poly(ethylene terephthalate) [J]. Journal of Thermoplastic Composite Materials, 2017, 30(8): 1157-1172.

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利用KH560和纳米SiO₂采用“一步法”反应挤出增黏PET

Increase the viscosity of PET by one-step reaction extrusion with KH560 and nano-SiO₂ as chain extender

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