CN101503589B - 一种可擦蓝黑色书写液 - Google Patents
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Abstract
本发明提供可擦蓝黑色书写液，书写液的主要成分包含：α-萘酚酞、酚酞、氢氧化钠、乙醇、甲醛、增稠剂、表面活性剂和蒸馏水。该书写液利用互补色原理配制而成，无毒、无刺激气味、不腐蚀，不仅可用于教学板书写液，也可用于儿童水彩笔的书写液，制备过程简单、使用方便，用水溶液即可擦除，是一种对人体无害，对环境无污染的书写液。
Description
技术领域
本发明涉及一种可擦书写液，具体属于一种可擦蓝黑色书写液。
背景技术
目前人们发明了各种白板书写液，将之注入专用的书写笔中，在特制的白板板上书写，可代替粉笔用于教学，具有书写流畅、易擦除、无尘环保等优点。然而，目前研发的这种书写液主要为红色、黄色、蓝色、绿色、紫色等，作为常用的黑色书写液到目前为止很少见文献报道。
中国专利申请号为200710139431.6公开了一种“可供浅色教学板使用的黑色书写液及其制备方法”，该书写液的优点是以水为溶剂、无尘、书写方便，其组分包括A液、D液、表面活性剂、甘油、过氧化氢、葡萄糖。其中A液中含有甲醛和浓硫酸，D液中含有固体碘，浓硫酸。由于配方中使用了碘、过氧化氢、甲醛和浓硫酸等对人的皮肤有刺激性和腐蚀性的试剂，从而在书写液制备过程中，容易对人和环境造成危害。
中国专利号为97116837.7公开了一种“教学板书写液”，它的组分包括颜料、分散剂、乳化剂、剥离剂、润滑剂、防冻剂。该书写液是将颜料、分散剂、乳化剂、剥离剂、润滑剂、防冻剂在水中加热混合溶解，经过研磨，达到一定粒度，经过过滤、静置而得。该书写液有以水为溶剂、无尘等优点，但其制作工艺较繁琐、久置颜料易沉积。
发明内容
本发明的目的是提供一种无毒，无刺激气味，对人体无害，对环境无污染，制备方法简单，使用方便的一种可擦除蓝黑色书写液。
一种可擦蓝黑色书写液，其组分按重量百分比计包括：
α-萘酚酞 4.0～8.0％
酚酞 0.16～0.5％
氢氧化钠 0.9～3％
乙醇 8.0～17％
甲醛 0.1～0.5％
增稠剂 0.02～0.11％
表面活性剂 0.02～0.08％
蒸馏水 77～85％
所述的增稠剂选自羧甲基纤维素或羟乙基纤维素；所述的表面活性剂选自十二烷基苯磺酸钠、十二烷基磺酸钠、十二烷基硫酸钠中的任意一种；所述的甲醛是浓度为37％的甲醛水溶液。该书写液中还可以加入适量香精。
书写液的制备：按上述比例称取各组分，先将氢氧化钠溶于少量的蒸馏水中，再加入乙醇，搅拌，然后再加入α-萘酚酞和酚酞，边加入边搅拌，补加蒸馏水稀释溶解后，再加入甲醛加热(40～60℃)0.5～1小时，使甲醛与α-萘酚酞和酚酞发生交联，冷却至室温后将增稠剂、表面活性剂加入，再加入剩余的水，充分搅拌使溶液混合均匀，过滤即得蓝黑色书写液溶液。
与已有技术相比，本书写液采用α-萘酚酞和酚酞为色料母体，α-萘酚酞在碱性条件下显绿色，酚酞在碱性条件下显红色，根据颜色的互补色原理，红色的互补色是绿色，将α-萘酚酞的绿色溶液与酚酞的红色溶液按一定比例混合，即可得到蓝黑色书写液。但由于α-萘酚酞和酚酞的显色体在溶液或空气中不太稳定，加入少量甲醛会使它们发生交联反应，生成α-萘酚酞和酚酞的二聚体或多聚体，可大大改善α-萘酚酞和酚酞的显色体在溶液或空气中的稳定性，并且形成的α-萘酚酞和酚酞的聚集体，可以使显色体的共轭体系增大，有利于显色体向深色方向移动，即溶液的蓝黑色加深。由于甲醛的加入量比缩聚反应的需要量要小，故反应产物的书写液中不存在游离的甲醛，即生成物中不存在甲醛危害。该书写液无毒，无刺激气味，对人体无害，对环境无污染，制备方法简单，使用方便，是一种环保且有利于保护学生视力的书写液。另外，用该书写液所书写在白板的字迹，受到空气中二氧化碳和水蒸汽的联合作用，在一定时间后会自动消色。在教学过程中也可用水直接擦除字迹，若用弱酸性水溶液擦除效果更佳。
具体实施方式
实施例1
α-萘酚酞 4.00g
酚酞 0.16g
氢氧化钠 1.20g
乙醇 9.46g
甲醛 0.16g
羟乙基纤维素 0.03g
十二烷基苯磺酸钠 0.02g
蒸馏水 63.3g
实施例2
α-萘酚酞 5.20g
酚酞 0.22g
氢氧化钠 1.60g
乙醇 7.90g
甲醛 0.10g
羧甲基纤维素 0.06g
十二烷基硫酸钠 0.05g
蒸馏水 58.10g
香精 0.05g
实施例3
α-萘酚酞 4.19g
酚酞 0.15g
氢氧化钠 1.31g
乙醇 10.38g
甲醛 0.12g
羟乙基纤维素 0.03g
十二烷基磺酸钠 0.03g
蒸馏水 66.23g
实施例1、2或3配制的书写液，无毒、无刺激气味，对人体无害，对环境无污染，不仅可用于教学板书写液，也可用于儿童水彩笔书写液，书写液所书写的字迹用水溶液即可擦除(弱酸性水溶液效果更佳)，制备方法简单，使用方便。
Claims (3)
1.一种可擦蓝黑色书写液，其组分按重量百分比计包括：
α-萘酚酞 4.0～8.0％
酚酞 0.16～0.5％
氢氧化钠 0.9～3％
乙醇 8.0～17％
甲醛 0.1～0.5％
增稠剂 0.02～0.11％
表面活性剂 0.02～0.08％
蒸馏水 77～85％；
所述的甲醛是浓度为37％的甲醛水溶液。
2.根据权利要求1所述的书写液，其特征在于所述的增稠剂选自羧甲基纤维素或羟乙基纤维素。
3.根据权利要求1或2所述的书写液，其特征在于所述的表面活性剂选自十二烷基苯磺酸钠、十二烷基磺酸钠、十二烷基硫酸钠中的任意一种。
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102146233B (zh) * | 2011-01-11 | 2013-07-31 | 山西大学 | 一种适于在亚光板上书写的黑色书写液及其擦除剂 |
| CN102172434A (zh) * | 2011-01-27 | 2011-09-07 | 山西大学 | 一种有色泡泡液 |
| CN102876133A (zh) * | 2011-07-14 | 2013-01-16 | 宁波绿拓新材料有限公司 | 两种易擦除的水解褪色墨水及其制备方法 |
| CN102925006B (zh) * | 2012-11-23 | 2014-11-05 | 重庆市秀峰教学设备有限公司 | 一种墨水及其制作方法 |
| CN103694794B (zh) * | 2013-12-26 | 2015-01-21 | 济南蓝贝思特科技有限公司 | 一种水擦白板墨水及其制备方法 |
| CN103911046B (zh) * | 2014-04-03 | 2016-02-10 | 山西大学 | 一种可水解褪色的绿色墨水及其制备方法 |
| CN104263077B (zh) * | 2014-08-18 | 2016-08-24 | 余姚费尔文具有限公司 | 一种环保褪色可控墨水 |
| CN105199673A (zh) * | 2015-10-19 | 2015-12-30 | 深圳市惠尔特实业有限公司 | 酚酞及百里香酚酞代替颜料在精细化工方面的应用 |
| CN105504985B (zh) * | 2016-01-06 | 2018-06-26 | 山西大学 | 一种可褪色的书法练习墨汁及其制备方法 |
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| CN1448448A (zh) * | 2003-05-08 | 2003-10-15 | 范远华 | 水解板书墨水组成物 |
| EP1706463A1 (en) * | 2004-01-14 | 2006-10-04 | Sanford, L.P. | Writing instruments with eradicable inks and eradicating fluids |
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| CN1448448A (zh) * | 2003-05-08 | 2003-10-15 | 范远华 | 水解板书墨水组成物 |
| EP1706463A1 (en) * | 2004-01-14 | 2006-10-04 | Sanford, L.P. | Writing instruments with eradicable inks and eradicating fluids |
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