强激光与粒子束, 2015, 27 (9): 092005, 网络出版: 2015-11-30  

固化温度对聚苯乙烯空心微球质量的影响

Influence of curing temperature on quality of polystyrene shells
作者单位
1 西南科技大学 材料科学与工程学院, 四川 绵阳 621010
2 中国工程物理研究院 激光聚变研究中心, 四川 绵阳 621900
摘要
在乳液微封装技术制备聚苯乙烯空心微球的工艺中,固化过程是决定微球球形度及壁厚均匀性的关键阶段。基于乳粒发生器制备内径(850±10) μm、壁厚(250±25) μm的复合乳粒,以25 ℃,45 ℃和65 ℃作为固化温度,考察了固化温度对微球球形度和壁厚均匀性的影响。结果表明,固化温度越低,界面张力越高,乳液固化速率越慢,微球球形度和壁厚均匀性越好。当固化温度为25 ℃时,批次微球中球形偏离值优于2 μm的微球产率为90%,壁厚偏差值优于2 μm的微球产率为40%,明显优于固化温度为45 ℃和65 ℃时微球的质量。
Abstract
During the fabrication process of polystyrene (PS) shells by emulsion microencapsulation method, solidification is a critical stage that influences the sphericity and wall thickness uniformity. The diameter and wall thickness of compound droplets prepared by the droplet generator were (850±10) μm and (250±25) μm respectively. To study the effects of curing temperature on the sphericity and wall thickness uniformity, the curing temperature was set at 25 ℃, 45 ℃ and 65 ℃. The experimental results show that lower temperature improves the sphericity and wall thickness uniformity due to higher interfacial tension and slower velocity of emulsion solidification. When the curing temperature was 25 ℃, the batch yield of PS shells with difference between the maximum and minimum radii less than 2 μm is 90%, and with the maximum deviation of wall thickness less than 2 μm is 40%, obviously better than that prepared at 45 ℃ and 65 ℃.
参考文献

[1] 唐永健,张林,吴卫东,等.ICF靶材料和靶制备技术研究进展[J].强激光与粒子束, 2008, 20(11):1773-1786.

    Tang Yongjian, Zhang Lin, Wu Weidong, et al. Research progress on ICF target materials and target fabrication technology. High Power Laser and Particle Beams, 2008, 20(11):1773-1786

[2] 张林,崔保顺,周兰,等.微封装法制备空心塑料微球[J].强激光与粒子束, 1995, 7(1):151-156.

    Zhang Lin, Cui Baoshun, Zhou Lan, et al. The fabrication of hollow plastic spheres by microencapsulation method. High Power Laser and Particle Beams, 1995, 7(1):151-156

[3] Takagi M, Norimatsu T, Yamanaka T, et al. Development of deuterated polystyrene shells for laser fusion by means of a density-matched emulsion method[J]. Journal of Vacuum Science and Technology, 1991, 9(4):2145-2149.

[4] Liu Meifang, Chen Sufen, Qi Xiaobo, et al. Improvement of wall thickness uniformity of thick-walled polystyrene shells by density matching[J]. Chemical Engineering Journal, 2014, 241:466-476.

[5] 张林,唐永健,高党忠,等.聚合物空心微球密度匹配法制备工艺研究[J].原子能科学技术, 2001, 35(5):427-431.

    Zhang Lin, Tang Yongjian, Gao Dangzhong, et al. Studies on the density-matched technique for fabrication of polymer hollow microspheres. Atomic Energy Science and Technology, 2001, 35(5):427-431

[6] 陈素芬,苏琳,刘一杨,等.聚-α-甲基苯乙烯微球固化过程中的密度匹配[J].强激光与粒子束, 2012, 24(7):1561-1565.

    Chen Sufen, Su Lin, Liu Yiyang, et al. Density match during fabrication process of poly (α-methyl styrene)mandrels by microencapsulation. High Power Laser and Particle Beams, 2012, 24(7):1561-1565

[7] 陈素芬,刘一杨,苏琳,等.双重乳液固化速率对PAMS微球球形度的影响[J].化工学报, 2013, 64(7):2447-2452.

    Chen Sufen, Liu Yiyang, Su Lin, et al. Influence of double emulsions solidification rate on sphericity of poly (α-methyl styrene) capsules in microencapsulation process. CIESC Journal, 2013, 64(7):2447-2452

[8] 刘梅芳,陈素芬,刘一杨,等.厚壁空心微球的球形度和壁厚均匀性的表征研究[J].强激光与粒子束,2014,26:022017.

    Liu Meifang, Chen Sufen, Liu Yiyang, et al. Characterization of sphericity and wall thickness uniformity of thick-walled hollow microspheres. High Power Laser and Particle Beams, 2014, 26:022017

[9] Takagi M, Cook R, Stephens R, et al. Stiffening of PAMS mandrels during curing[J]. Fusion Technology, 2000, 38(7):50-53.

[10] 沈钟,赵振国,王果庭.胶体与表面化学[M].北京:化学工业出版社, 2004:197-198.

    Shen Zhong, Zhao Zhenguo, Wang Guoting. Colloid and surface chemistry. Beijing: Chemical Industry Press, 2004:197-198

[11] Kumar S, Ganvir V, Sayanand C, et al. Alternative mechanisms of drop breakup in stirred vessels[J]. Chemical Engineering Science, 1998, 53(18):3269-3280.

[12] Qu Xiaofeng, Wang Yechun. Dinamics of concentric and eccentric compound droplets suspended in extensional flows[J]. Physics of Fluids, 2012, 24:1-22.

胡阳鹏, 刘梅芳, 陈素芬, 易勇, 张占文. 固化温度对聚苯乙烯空心微球质量的影响[J]. 强激光与粒子束, 2015, 27(9): 092005. Hu Yangpeng, Liu Meifang, Chen Sufen, Yi Yong, Zhang Zhanwen. Influence of curing temperature on quality of polystyrene shells[J]. High Power Laser and Particle Beams, 2015, 27(9): 092005.

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