摘要
针对BK7光学玻璃材料去除率和抛光质量不断提高的需求,提出通过减少磁性复合流体(MCF)抛光液颗粒的团聚、提高MCF分散性,配制性能优良的抛光液,提高BK7光学玻璃的MCF抛光性能.MCF中添加不同质量分数的高分子类分散剂聚乙烯醇(PVA),采用激光粒度分布仪测试MCF抛光液中颗粒的粒径分布和中位粒径,探究不同PVA浓度的抛光液对BK7光学玻璃抛光性能的影响.试验结果表明:当PVA质量分数为3%时,中位粒径达到最小值5.854μm,MCF的分散性最好,对光学玻璃的抛光性能大幅提高,当PVA质量分数为5%时,经MCF抛光10min后材料去除率达到最大值26.4×10^-4g/min,表面粗糙度达到最小值8.23nm.MCF中添加适量PVA能够减少抛光液颗粒的团聚,提高MCF的分散性,提升BK7光学玻璃的磁性复合流体抛光性能.
In order to meet the demand of improving the material removal rate and polishing quality of BK7 optical glass,it is proposed to improve the dispersion of the polishing fluid and prepare the polishing liquid with excellent properties by decreasing the agglomeration of the polishing fluid particles of the Magnetic Compound Fluid(MCF),improving MCF polishing performance of BK7 optical glass.Polyving Akohol(PVA),apolymer dispersant,with different mass fraction was added to MCF to analyze the particle size distribution and median particle size in the MCF polishing fluid.The effect of different amount of PVA polishing liquid on the polishing performance of BK7 optical glass was investigated.The experimental results show that when the mass fraction of PVA is 3%,the median particle size reaches the minimum of 5.854μm,the dispersion of the MCF is the best,and the polishing performance is greatly improved.When the mass fraction of PVA is 5%,the maximum of material removal rate is 26.4×10^-4 g/min,and the surface roughness reached the minimum of 8.23 nm after MCF polishing 10 minutes.The addition of proper amount of PVA to the MCF,it can decrease the problem of polishing fluid particle agglomeration,improve the dispersion of the MCF,improve the Magnetic Composite Fluid polishing performance of BK7 optical glass.
作者
姜晨
时培兵
李佳音
张勇斌
JIANG Chen;SHI Pei-bing;LI Jia-yin;ZHANG Yong-bin(School of Mechanical Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China;Institute of Mechanical Manufacturing Technology,China Academy of Engineering Physics,Mianyang,Sichuan 621000,China)
出处
《光子学报》
EI
CAS
CSCD
北大核心
2019年第5期24-33,共10页
Acta Photonica Sinica
基金
国家自然科学基金(No.51475310)
高等学校博士学科点专项科研基金(No.20133120120005)~~
