CN104998860B - 一种有机dast晶体的表面清洗工艺 - Google Patents
一种有机dast晶体的表面清洗工艺 Download PDFInfo
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- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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Abstract
本发明公开了一种有机DAST晶体的表面清洗工艺。该清洗工艺流程为:1、将DAST晶体置于由按体积比70%~95%乙酸乙酯和5%~30%异丙醇配制的清洗剂中,超声清洗10~30s;2、将DAST晶体置于由按体积比76%~98%无水乙醇和2%~24%四氢呋喃配制的清洗剂中,超声清洗10~30s;3、将DAST晶体置于甲醇溶液中,超声清洗2~8s;4、将清洗干净的DAST晶体在45~55℃条件下,真空干燥15~30min。采用本工艺能够有效地清除DAST晶体表面的杂质,尤其是能彻底清洗DAST晶体表面因吸水而变色的表层,且易挥发,可得到洁净干燥的晶体表面。
Description
技术领域
本发明涉及DAST晶体表面处理方法,尤其是涉及一种有机DAST晶体的表面清洗工艺。
背景技术
有机光学DAST晶体(即4-N,N-二甲胺基-4’-N’-甲基-氮杂芪的对甲苯磺酸盐,英文名为4-N,N-dimethylamino-4’-N’-methyl-stilbazolium tosylate),由于其自身高的电光系数和非线性性能,成为迄今效率最高的具有发射太赫兹辐射能力的非线性晶体,同时DAST也是一种高性能的太赫兹探测晶体。
采用溶液法生长有机DAST晶体,其表面不可避免地会沾染溶剂和粉体颗粒等杂质,如果未及时干燥,有机DAST晶体表面极易吸水变色,使得晶体表面质量和透光性变差,因此,必须对DAST表面进行清洗。
由于DAST晶体表面极易吸水的特性,在对DAST晶体进行清洗时,清洗剂要能够迅速挥发,因此,清洗剂的选择十分重要,目前还没有一种合适的清洗方法能够在快速彻底的清除DAST晶体表面杂质。因而,迫切需要研制一项具有良好去污效果的DAST晶体表面清洗工艺。
发明内容
鉴于现有技术存在的问题,本发明研发一种有机DAST晶体的表面清洗工艺。
本发明采取的技术方案是:一种有机DAST晶体的表面清洗工艺,其特征在于,该清洗工艺流程为:
第一步.将DAST晶体置于由按体积比70%~95%乙酸乙酯和5%~30%异丙醇配制的清洗剂中,超声清洗10s~30s,清洗DAST晶体表面的粉体颗粒杂质。
第二步.将DAST晶体置于由按体积比76%~98%无水乙醇和2%~24%四氢呋喃配制的清洗剂中,超声清洗10s~30s,清除DAST晶体因吸水变色的表面。
第三步.将DAST晶体置于甲醇溶液中,超声清洗2s~8s,清除DAST晶体表面沾染的清洗剂,得到洁净的晶体表面。
第四步.将清洗干净的DAST晶体在45℃~55℃条件下,真空干燥15min~30min。
本发明所产生的有益效果是:采用本工艺能够有效地清除DAST晶体表面的杂质,尤其是能彻底清洗DAST晶体表面因吸水而变色的表层,且易挥发,可得到洁净干燥的晶体表面。
具体实施方式
以下结合实施例对本发明进行详细说明:
实施例1:有机DAST晶体表面清洗工艺具体步骤如下:
①将有机DAST晶体置于由70%乙酸乙酯和30%异丙醇配成的清洗溶液中,超声清洗10s;
②将有机DAST晶体置于87%无水乙醇和13%四氢呋喃配成的
清洗溶液中,超声清洗15s;
③将有机DAST晶体置于甲醇溶液中,超声清洗5s;
④将清洗后的DAST晶体置于真空干燥箱中,在55℃条件下干燥15min,可得到洁净干燥的DAST晶体表面。
实施例2:有机DAST晶体表面清洗工艺具体步骤如下:
①将有机DAST晶体置于由70%乙酸乙酯和30%异丙醇配成的清洗溶液中,超声清洗10s;
②将有机DAST晶体置于98%无水乙醇和2%四氢呋喃配成的清洗溶液中,超声清洗10s;
③将有机DAST晶体置于甲醇溶液中,超声清洗8s;
④将清洗后的DAST晶体置于真空干燥箱中,在50℃条件下干燥15min,,可得到洁净干燥的DAST晶体表面。
实施例3:有机DAST晶体表面清洗工艺具体步骤如下:
①将有机DAST晶体置于由83%乙酸乙酯和17%异丙醇配成的清洗溶液中,超声清洗15s;
②将有机DAST晶体置于76%无水乙醇和24%四氢呋喃配成的清洗溶液中,超声清洗30s;
③将有机DAST晶体置于甲醇溶液中,超声清洗2s;
④将清洗后的DAST晶体置于真空干燥箱中,在45℃条件下干燥30min,,可得到洁净干燥的DAST晶体表面。
实施例4:有机DAST晶体表面清洗工艺具体步骤如下:
①将有机DAST晶体置于由83%乙酸乙酯和17%异丙醇配成的清洗溶液中,超声清洗15s;
②将有机DAST晶体置于98%无水乙醇和2%四氢呋喃配成的清洗溶液中,超声清洗10s;
③将有机DAST晶体置于甲醇溶液中,超声清洗5s;
④将清洗后的DAST晶体置于真空干燥箱中,在55℃条件下干燥25min,,可得到洁净干燥的DAST晶体表面。
实施例5:有机DAST晶体表面清洗工艺具体步骤如下:
①将有机DAST晶体置于由95%乙酸乙酯和5%异丙醇配成的清洗溶液中,超声清洗30s;
②将有机DAST晶体置于76%无水乙醇和24%四氢呋喃配成的清洗溶液中,超声清洗30s;
③将有机DAST晶体置于甲醇溶液中,超声清洗8s;
④将清洗后的DAST晶体置于真空干燥箱中,在50℃条件下干燥30min,,可得到洁净干燥的DAST晶体表面。
实施例6:有机DAST晶体表面清洗工艺具体步骤如下:
①将有机DAST晶体置于由95%乙酸乙酯和5%异丙醇配成的清洗溶液中,超声清洗30s;
②将有机DAST晶体置于87%无水乙醇和13%四氢呋喃配成的清洗溶液中,超声清洗15s;
③将有机DAST晶体置于甲醇溶液中,超声清洗2s;
④将清洗后的DAST晶体置于真空干燥箱中,在45℃条件下干燥25min,,可得到洁净干燥的DAST晶体表面。
以上实施例通过微分干涉显微镜进行表面缺陷、附着粉体颗粒检测,经检测验证发现,采用实施例4的工艺条件,使有机DAST晶体表面清洗效果最佳,为本发明最佳实施例。
Claims (1)
1.一种有机DAST晶体的表面清洗工艺,其特征在于,该清洗工艺流程为:
第一步.将DAST晶体置于由按体积比70%~95%乙酸乙酯和5%~30%异丙醇配制的清洗剂中,超声清洗10s~30s,清洗DAST晶体表面的粉体颗粒杂质;
第二步.将DAST晶体置于由按体积比76%~98%无水乙醇和2%~24%四氢呋喃配制的清洗剂中,超声清洗10s~30s,清除DAST晶体因吸水变色的表面;
第三步.将DAST晶体置于甲醇溶液中,超声清洗2s~8s,清除DAST晶体表面沾染的清洗剂,得到洁净的晶体表面;
第四步.将清洗干净的DAST晶体在45℃~55℃条件下,真空干燥15min~30min。
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CN102629065A (zh) * | 2011-02-01 | 2012-08-08 | 爱科来株式会社 | 光学晶体和太赫兹波生成装置及方法 |
CN103305919A (zh) * | 2013-07-11 | 2013-09-18 | 青岛大学 | 一种有机非线性光学晶体的生长方法 |
CN104152298A (zh) * | 2014-07-20 | 2014-11-19 | 烟台恒迪克能源科技有限公司 | 一种精密电子清洗剂 |
CN104175643A (zh) * | 2014-08-05 | 2014-12-03 | 电子科技大学 | Dast-石墨烯复合膜及其制备方法 |
CN104341342A (zh) * | 2014-10-23 | 2015-02-11 | 中国电子科技集团公司第四十六研究所 | 一种高产率、高纯度的dast源粉合成工艺 |
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CN102629065A (zh) * | 2011-02-01 | 2012-08-08 | 爱科来株式会社 | 光学晶体和太赫兹波生成装置及方法 |
CN103305919A (zh) * | 2013-07-11 | 2013-09-18 | 青岛大学 | 一种有机非线性光学晶体的生长方法 |
CN104152298A (zh) * | 2014-07-20 | 2014-11-19 | 烟台恒迪克能源科技有限公司 | 一种精密电子清洗剂 |
CN104175643A (zh) * | 2014-08-05 | 2014-12-03 | 电子科技大学 | Dast-石墨烯复合膜及其制备方法 |
CN104341342A (zh) * | 2014-10-23 | 2015-02-11 | 中国电子科技集团公司第四十六研究所 | 一种高产率、高纯度的dast源粉合成工艺 |
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