Preparation of high impact polypropylene with high ethylene content by gas phase process

doi:10.11949/j.issn.0438-1157.20151354

CIESC Journal ›› 2016, Vol. 67 ›› Issue (2): 667-671.DOI: 10.11949/j.issn.0438-1157.20151354

Previous Articles Next Articles

Preparation of high impact polypropylene with high ethylene content by gas phase process

DA Wenzhong¹, XIAO Zhixian², XU Hongbin¹, TU Yuxia², MEI Li¹, YAO Zhen², CAO Kun²

1 Nanjing Research Institute of SINOPEC Yangzi Petrochemical Company Limited, Nanjing 210047, Jiangsu, China;
2 State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, Zhejiang, China

Received:2015-08-25 Revised:2015-12-20 Online:2016-02-05 Published:2016-02-05
Supported by:
supported by the National High Technology Research and Development Program of China (2012AA040306).

气相法制备高乙烯含量的高抗冲聚丙烯

笪文忠¹, 肖智贤², 徐宏彬¹, 屠宇侠², 梅利¹, 姚臻², 曹堃²

1 中国石化扬子石油化工有限公司南京研究院, 江苏南京 210047;
2 浙江大学化学工程与生物工程学院, 化学工程联合国家重点实验室, 浙江杭州 310027

通讯作者: 曹堃
基金资助:
国家高技术研究发展计划项目(2012AA040306)。

Abstract

Abstract:

In the production of high impact polypropylene (hiPP) by in-reactor processes, the ethylene content of hiPP was limited at a low level for the lack of a suitable antisticking method and that by now a deficient antisticking method with low purity nitrogen (LPN) was commonly adopted. A new antisticking method by in-situ adding tiny (<0.1%) superfines was adopted in Hypol process to produce hiPP with high ethylene content (>20%) and good flowability, showing the possibility to take the place of LPN method. Moreover, the comparison of the product with hiPP prepared by LPN method showed that the anti-impact performance rose from 36.44 kJ·m^-2 to 60.56 kJ·m^-2 at 23℃ and from 14.78 kJ·m^-2 to 35.12 kJ·m^-2 at -20℃, respectively. It was found that hiPP with high ethylene content presented excellent anti-impact performance at both 23℃ and -20℃.

Key words: high impact polypropylene, high ethylene content, antisticking technology, superfines

摘要：

反应器内合金化技术生产高抗冲聚丙烯(hiPP)过程中,目前工业上普遍采用加入低纯氮(LPN)的方式阻止聚丙烯颗粒表面生成乙丙橡胶的防粘策略,限制了乙烯含量的提高,使得其抗冲性能受到一定的制约。提出了一种在共聚气相釜中原位添加极少量(<0.1%)超细粉体的方法,通过局载化于聚丙烯颗粒表面,从而起到替代低纯氮的作用,并能通过物理阻隔的方式进一步防止颗粒间发黏聚并,成功将其运用于Hypol 工艺,制得高乙烯含量(>20%)且流动性良好的hiPP。同时,将产物与传统低纯氮体系的进行比较,其常温抗冲性能由36.44 kJ·m^-2升至60.56 kJ·m^-2,低温抗冲性能由14.78 kJ·m^-2 升至35.12 kJ·m^-2,体现出其优异的常温和低温抗冲性能。

关键词: 高抗冲聚丙烯, 高乙烯含量, 防粘技术, 超细粉体

CLC Number:

TQ033

DA Wenzhong, XIAO Zhixian, XU Hongbin, TU Yuxia, MEI Li, YAO Zhen, CAO Kun. Preparation of high impact polypropylene with high ethylene content by gas phase process[J]. CIESC Journal, 2016, 67(2): 667-671.

笪文忠, 肖智贤, 徐宏彬, 屠宇侠, 梅利, 姚臻, 曹堃. 气相法制备高乙烯含量的高抗冲聚丙烯[J]. 化工学报, 2016, 67(2): 667-671.

References 23

[1]	GAHLEITNER M, TRANNINGER C, DOSHEV P. Heterophasic copolymers of polypropylene:development, design principles, and future challenges[J]. Journal of Applied Polymer Science, 2013, 130(5):3028-3037.
[2]	洪定一. 聚丙烯——原理、工艺与技术[M]. 北京:中国石化出版社, 2002. HONG D Y. Theory, Process and Technology for Polypropylene[M].Beijing:China Petrochemical Press, 2002
[3]	TIAN Y, SONG S, FENG J, et al. Phase morphology evolution upon melt annealing treatment and corresponding mechanical performance of impact-resistant polypropylene copolymer[J]. Materials Chemistry and Physics, 2012, 133(2/3):893-900.
[4]	JIAN W, XIN X, LI L, et al. Structure and properties of high impact polypropylene[J]. China Synthetic Resin and Plastics, 2011, (1):19.
[5]	刘小燕, 陈旭, 冯颜博, 等. 抗冲共聚聚丙烯的组成、结构与性能[J]. 石油化工, 2013, 42(1):30-33. LIU X Y, CHEN X, FENG Y B, et al. Composition, structure and properties of impact propylene copolymer[J]. Petrochemical Technology, 2013, 42(1):30-33.
[6]	GALLI P. The reactor granule technology:a revolutionary approach to polymer blends and alloys[J]. Macromolecular Symposia, 1994, 78:269-284.
[7]	GRECO R, MUCCIARIELLO G, RAGOSTA G, et al. Properties of polyethylene-polypropylene blends[J]. Journal of Materials Science, 1980, 15(4):845-853.
[8]	TEH J W. Structure and properties of polyethylene-polypropylene blend[J]. Journal of Applied Polymer Science, 1983, 28(2):605-618.
[9]	YANG D, ZHANG B, YANG Y, et al. Morphology and properties of blends of polypropylene with ethyle-propylene rubber[J]. Polymer Engineering & Science, 1984, 24(8):612-617.
[10]	STEHLING F C, HUFF T, SPEED C S, et al. Structure and properties of rubber-modified polypropylene impact blends[J]. Journal of Applied Polymer Science, 1981, 26(8):2693-2711.
[11]	KARGER-KOCSIS J, KALLO A, SZAFNER A, et al. Morphological study on the effect of elastomeric impact modifiers in polypropylene systems[J]. Polymer, 1979, 20(1):37-43.
[12]	VESTBERG T, DENIFL P, WILÉN C E. Increased rubber content in high impact polypropylene via a sirius Ziegler-Natta catalyst containing nanoparticles[J]. Journal of Polymer Science Part A:Polymer Chemistry, 2013, 51(9):2040-2048.
[13]	URDAMPILLETA I, GONZÁLEZ A, IRUIN J J, et al. Morphology of high impact polypropylene particles[J]. Macromolecules, 2005, 38(7):2795-2801.
[14]	CHERUTHAZHEKATT S, PASCH H. Defining the distribution of ethylene-propylene copolymer phases in heterophasic ethylenepropylene copolymers by a sequential xylene extraction method:chemical and morphological analysis[J]. Polymer, 2014, 55:5358-5369.
[15]	ZHOU Y, NIU H, KONG L, et al. Probing into the pristine basic morphology of high impact polypropylene particles[J]. Polymer, 2009, 50(19):4690-4695.
[16]	CHEN Y, CHEN Y, CHEN W, et al. Evolution of phase morphology of high impact polypropylene particles upon thermal treatment[J]. European Polymer Journal, 2007, 43(7):2999-3008.
[17]	DOSHEV P, LOHSE G, HENNING S, et al. Phase interactions and structure evolution of heterophasic ethylene-propylene copolymers as a function of system composition.[J]. Journal of Applied Polymer Science, 2006, 101(5):2825-2837.
[18]	ZHANG C, SHAN G Y, CHEN R, et al. Morphology, microstructure and compatibility of impact polypropylene copolymer[J]. Polymer, 2010, 51(21):4969-4977.
[19]	TIAN Z, FENG L, FAN Z, et al. Ethylene-propylene segmented copolymer as an in situ compatibilizer for impact polypropylene copolymer:an assessment of rheology and morphology[J]. Industrial & Engineering Chemistry Research, 2014, 53(28):11345-11354.
[20]	TAN H, LI L, CHEN Z, et al. Phase morphology and impact toughness of impact polypropylene copolymer[J]. Polymer, 2005, 46(10):3522-3527.
[21]	陈思蒙, 宋文波, 毕福勇. 高橡胶含量抗冲聚丙烯制备技术研究进展[J]. 橡塑资源利用, 2013, 6:10-17. CHEN S M, SONG W B, BI F Y. Research progress of preparation of high impact polypropylene with high rubber content[J]. Rubber & Plastics Resources Utilization, 2013, 6:10-17.
[22]	王兴仁, 杨爱武, 吴新源, 等. 纳米材料对乙丙多相共聚的影响[J]. 现代塑料加工应用, 2003, 15(5):9-12. WANG X R, YANG A W, WU X Y, et al. Study on the influence of nano-materials on ethylene-propylene block polymer[J]. Modern Plastics Processing and Applications, 2003, 15(5):9-12.
[23]	笪文忠, 梅利, 王兴仁, 等. 聚丙烯超细粉复合材料的制备方法:200510041097.1[P]. 2007.01.24. DA W Z, MEI L, WANG X R, et al. Preparation of polypropylene superfine powder for the composite materials:200510041097.1[P]. 2007.01.24.

Preparation of high impact polypropylene with high ethylene content by gas phase process

气相法制备高乙烯含量的高抗冲聚丙烯

PDF (PC)

Knowledge

Cited

Abstract

Cite this article

share this article

References 23

Related Articles 2

Recommended Articles

Metrics

Comments

[1]	XU Hongbin, CHEN Wei, WU Yan, MEI Li, YAO Zhen, DA Wenzhong, CAO Kun. Flowability and anti-static properties of high impact polypropylene particles [J]. CIESC Journal, 2017, 68(2): 767-773.
[2]	DA Wenzhong, TU Yuxia, XU Hongbin, MEI Li, YAO Zhen, CAO Kun. Progress in analysis of structure and properties of hiPP [J]. CIESC Journal, 2016, 67(2): 397-403.