联合增稠对不饱和聚酯团状模塑料流变行为的研究

玻璃钢/复合材料 ›› 2016, Vol. 0 ›› Issue (10): 84-87.

联合增稠对不饱和聚酯团状模塑料流变行为的研究

许小强,周权^*,倪礼忠,仝华

华东理工大学材料科学与工程学院,特种功能高分子材料及相关技术教育重点实验室,上海200237

收稿日期:2016-03-14 出版日期:2016-11-25 发布日期:2016-11-25
通讯作者: 周权(1973-),男,博士,副教授,主要从事高性能树脂基复合材料的研发与应用,qzhou@ecust.edu.cn。
作者简介:许小强(1991-),男,硕士研究生,主要从事低压成型不饱和团状模塑料的制备与研究。

STUDY ON THE RHEOLOGICAL BEHAVIOR OF JOINT THICKENING ON BULK MOLDING COMPUND

XU Xiao-qiang, ZHOU Quan^*, NI Li-zhong, TONG Hua

Key Laboratory of Specially Functional Polymeric Materials and Related Technology of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China

Received:2016-03-14 Online:2016-11-25 Published:2016-11-25

摘要/Abstract

摘要： 模压流变性能是不饱和聚酯团状模塑料(BMC)在工业压制过程中相当重要的工艺参数。传统的BMC制造工艺,由于模压过程中流变性能较差,需要较大的模压压力及较长的模压时间,这样既增大了模具损耗,也降低了工厂的生产效率。系统讨论了化学增稠剂Ca(OH)₂在模压过程中对BMC流变行为的影响,在此基础上利用结晶性树脂与Ca(OH)₂对BMC进行联合增稠,对联合增稠的BMC的平板流动性能及螺旋流动性能进行分析。结果表明,结晶性树脂与Ca(OH)₂搭配的复合增稠体系不会影响BMC的固化行为,同时可以较好地改善BMC的模压流动性能,实现低压条件下BMC的成型。

关键词: 结晶性树脂, Ca(OH)₂, 联合增稠, 流变行为, BMC

Abstract: Molded rheological property is a quite important process parameter for unsaturated polyester bulk molding compound (BMC) in the industrial process of pressing. Due to the poor performance of rheological molding process in traditional manufacturing process of BMC, the molding requires larger molding pressure and longer molding time. As a result, it not only increases the possibility of die loss, but also reduces the productivity of the plant. This article discusses systematically the influence of rheological behavior of chemical thickener Ca(OH)₂ in the molding process of BMC. On this basis, the crystalline resin was used to joint thicken BMC with Ca(OH)₂. Through tablet flow properties and spiral flow analysis of thickened BMC, the results show that the crystalline resin and Ca(OH)₂ as a complex thickening system will not affect the curing behavior of BMC. In fact, it can improve the molding flow properties of BMC and make the BMC be able to be molded under the low pressure.

Key words: crystalline resin, Ca(OH)₂, joint thickening, flow behavior, BMC

中图分类号:

TB332

许小强,周权,倪礼忠,仝华. 联合增稠对不饱和聚酯团状模塑料流变行为的研究[J]. 玻璃钢/复合材料, 2016, 0(10): 84-87.

XU Xiao-qiang, ZHOU Quan, NI Li-zhong, TONG Hua. STUDY ON THE RHEOLOGICAL BEHAVIOR OF JOINT THICKENING ON BULK MOLDING COMPUND[J]. Fiber Reinforced Plastics/Composites, 2016, 0(10): 84-87.

参考文献

[1] 陈锋. BMC模塑料及其成型技术[M]. 北京: 化学工业出版社, 2002.
[2] Tran Vinh DIEU, Nguyen Thanh LIEM, Tran Thi MAI, et al. Study on Fabrication of BMC Laminate Based on Unsaturated Polyester Resin Reinforced by Hybrid Bamboo/Glass fibers[J]. JSME International Journal, 2004, 47(4).
[3] 柴红梅, 代海涛, 丁勇刚. 环氧树脂团状模塑料制备及其研究[J]. 玻璃钢/复合材料, 2014(5): 56-58.
[4] 梁国正, 顾媛娟. 模压成型技术[M]. 北京: 北京化学出版社, 1999.
[5] 黄志雄, 王伟, 刘坐镇. SMC/BMC成型工艺及其发展[C]//中国不饱和聚酯树脂行业协会第十二届年会论文集. 2008.
[6] John J. McCluskey, Granvile, Ohio. Thichening Agent for Low Presure Molding Compositions: USA, 4128601[P].
[7] 吴德山. 低压片状模塑料的研究[J]. 玻璃钢/复合材料, 1996(2): 22-25.
[8] 沈开猷. 不饱和聚酯树脂及其应用[M]. 北京: 化学工业出版社, 1998.
[9] Reiko Saito, Wang-Ming J. Kan, L.James Lee. Thickening behavior and Shrinkage control of low profile unsaturated polyester resin[J]. Polymer, 1996, 37(16): 3567-3576.
[10] 张凯. 低压片状模塑料性能及模压理论研究[D]. 武汉: 武汉理工大学材料科学与工程学院, 2007.
[11] 冀宪领, 安鑫南, 王石发. 新型不饱和聚酷树脂的合成及其性能的研究[J].南京林业大学学报, 1999(9): 47-49.
[12] 王钧, 段华军, 马会茹, 等. 低粘度不饱和聚醋树脂的合成与改性研究[J]. 武汉理工大学学报, 2001(7): 15-18.
[13] 李建, 黄志雄, 秦岩, 等. 低压片状模塑料中结晶树脂的增稠机理探讨[J]. 高分子材料科学与工程, 2006(22): 185-188.
[14] 于浩. 低压片状模塑料模压工艺研究[D]. 武汉: 武汉理工大学材料科学与工程学院, 2006.
[15] 王琦, 张德镛, 祁立民, 等. 关于注射BMC成型中的粘度控制问题[J]. 玻璃钢/复合材料, 1997(5): 34-36.
[16] 江万松. BMC材料的增韧及注射成型工艺研究[D]. 武汉: 武汉理工大学材料学院, 2001.