CN106115686B - 一种纳米材料的钝化工艺 - Google Patents

一种纳米材料的钝化工艺 Download PDF

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CN106115686B
CN106115686B CN201610445290.XA CN201610445290A CN106115686B CN 106115686 B CN106115686 B CN 106115686B CN 201610445290 A CN201610445290 A CN 201610445290A CN 106115686 B CN106115686 B CN 106115686B
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CN106115686A (zh
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董晖
汪芳
程鸿财
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Zhejiang Wang Lin Biotechnology Co Ltd
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Abstract

一种纳米材料的钝化工艺,钝化工艺包括以下步骤:加料:将需要钝化的纳米竹炭粉或纳米木炭粉放入冲击磨磨体内,然后盖上盖子,使冲磨磨体内保持密封;注氧:通过透气单向阀向冲击磨磨体内充入适量氧气,使冲击磨磨体内氧气浓度为200‑300ppm,冲击磨磨体内气体压力为0.11‑0.15MPa,压力过大由气体压力平衡阀自动放气;钝化:在冲击磨磨体内对纳米材料进行钝化,钝化时间为12‑24小时,钝化时对氧气含量进行实时监测,使冲击磨磨体内氧气浓度保持在200‑300ppm;放气并静置:将放气阀打开,放掉冲击磨磨体内的气体,并将钝化后的纳米材料静置1‑2小时,增加纳米材料的钝化效果;出料。

Description

一种纳米材料的钝化工艺
技术领域
本发明属于纳米材料加工技术领域,具体涉及到一种纳米材料的钝化工艺。
背景技术
竹炭作为环境卫士已逐渐被人们认知,但竹炭作为人体内的卫士却鲜为人知,当人们吃食物时难免吃下残留农药、防腐剂和食品添加剂,以及包装容器溶解物,长期下去对身体健康不利,既可能引起内分泌失调;如果经常吃些竹炭,那些吃下的残留农药、防腐剂和食品添加剂、以及包装容器溶解物,可被吃下的吸附力极强的竹炭吸附后,一起排出体外,避免了化学品对身体的危害。此外,竹炭在人体内还有其他有益的功效,可见竹炭食品对人们的健康十分有利;但是目前的竹炭粉在制作过程中极易被氧化,使竹炭粉失去其原有的功效。
发明内容
本发明主要是解决上述现有技术所存在的技术问题,提供一种纳米材料的钝化工艺。
本发明的上述技术问题主要是通过下述技术方案得以解决的:一种纳米材料的钝化工艺,其特征在于:钝化工艺包括以下步骤:
A、加料:将需要钝化的纳米竹炭粉或纳米木炭粉放入冲击磨磨体内,然后盖上盖子,使冲磨磨体内保持密封;
B、注氧:通过透气单向阀向冲击磨磨体内充入适量氧气,使冲击磨磨体内氧气浓度为200-300ppm,冲击磨磨体内气体压力为0.11-0.15MPa,压力过大由气体压力平衡阀自动放气;
C、钝化:在冲击磨磨体内对纳米材料进行钝化,钝化时间为12-24小时,钝化时对氧气含量进行实时监测,保持冲击磨磨体内氧气浓度在200-300ppm;
D、放气并静置:将放气阀打开,放掉冲击磨磨体内的气体,并将钝化后的纳米材料静置1-2小时,增加纳米材料的钝化效果;
E、出料:将钝化后的纳米材料从冲击磨磨体内吸出。
钝化原理为:根据密闭冲击磨磨体内的氧含量的大小和粉体纳米化的进程,在满足氧含量和纳米粉体的新生表面能的大小的条件下,达到一种动态平衡;冲击磨磨体内的氧仅仅能满足新生表面最活跃的那部分的不完全氧化;利用氧气监控和外加氧气的技术手段使粉体在纳米化加工完成后,达到表面新生部分有一个薄氧化层;使纳米粉体的强氧化性能得以抑制,达到钝化目的。
本发明具有以下优点及效果:
(1)钝化工艺和纳米材料生产工艺相结合,在纳米材料生产的同事进行钝化,节省了大量生产时间,提高了生产效率;
(2)经过钝化的纳米材料在接触空气后,不在被空气中的氧气氧化,使纳米材料能保持其应有的功效和性能。
具体实施方式
下面通过实施例,对本发明的技术方案作进一步具体的说明。
实施例1:一种纳米材料的钝化工艺,其特征在于:钝化工艺包括以下步骤:
A、加料:将需要钝化的纳米竹炭粉放入冲击磨磨体内,然后盖上盖子,使冲磨磨体内保持密封;
B、注氧:通过透气单向阀向冲击磨磨体内充入适量氧气,使冲击磨磨体内氧气浓度为250-280ppm,冲击磨磨体内气体压力为0.12-0.13MPa,压力过大由气体压力平衡阀自动放气;
C、钝化:在冲击磨磨体内对纳米竹炭粉进行钝化,钝化时间为14小时,钝化时对氧气含量进行实时监测,使冲击磨磨体内氧气浓度保持在250-280ppm;
D、放气并静置:将放气阀打开,放掉冲击磨磨体内的气体,并将钝化后的纳米竹炭粉静置1小时,增加纳米竹炭粉的钝化效果;
E、出料:将钝化后的纳米竹炭粉从冲击磨磨体内吸出。
实施例2:一种纳米材料的钝化工艺,其特征在于:钝化工艺包括以下步骤:
A、加料:将需要钝化的纳米木炭粉放入冲击磨磨体内,然后盖上盖子,使冲磨磨体内保持密封;
B、注氧:通过透气单向阀向冲击磨磨体内充入适量氧气,使冲击磨磨体内氧气浓度为280-300ppm,冲击磨磨体内气体压力为0.13-0.14MPa,压力过大由气体压力平衡阀自动放气;
C、钝化:在冲击磨磨体内对纳米木炭粉进行钝化,钝化时间为18小时,钝化时对氧气含量进行实时监测,使冲击磨磨体内氧气浓度保持在280-300ppm;
D、放气并静置:将放气阀打开,放掉冲击磨磨体内的气体,并将钝化后的纳米木炭粉静置2小时,增加纳米木炭粉的钝化效果;
E、出料:将钝化后的纳米木炭粉从冲击磨磨体内吸出。
钝化工艺和纳米材料生产工艺相结合,在纳米材料生产的同事进行钝化,节省了大量生产时间,提高了生产效率;经过钝化的纳米材料在接触空气后,不在被空气中的氧气氧化,使纳米材料能保持其应有的功效和性能。
最后,应当指出,以上实施例仅是本发明较有代表性的例子。显然,本发明不限于上述实施例,还可以有许多变形。凡是依据本发明的技术实质对以上实施例所作的任何简单修改、等同变化与修饰,均应认为属于本发明的保护范围。

Claims (1)

1.一种纳米材料的钝化工艺,其特征在于:钝化工艺包括以下步骤:
A、加料:将需要钝化的纳米竹炭粉或纳米木炭粉放入冲击磨磨体内;
B、注氧:通过透气单向阀向冲击磨磨体内充入适量氧气,使冲击磨磨体内氧气浓度为200-300ppm,冲击磨磨体内气体压力为0.11-0.15MPa;
C、钝化:在冲击磨磨体内对纳米材料进行钝化,钝化时间为12-24小时,钝化时保持冲击磨磨体内氧气浓度在200-300ppm;
D、放气并静置:将放气阀打开,放掉冲击磨磨体内的气体,并将钝化后的纳米材料静置1-2小时;
E、出料:将钝化后的纳米材料从冲击磨磨体内吸出。
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1248548A (zh) * 1998-09-22 2000-03-29 中国科学院山西煤炭化学研究所 一种超细炭粉的制备方法
US6576369B1 (en) * 1996-12-25 2003-06-10 Sumitomo Metal Industries, Ltd. Graphite powder suitable for negative electrode material of lithium ion secondary batteries
CN101597056A (zh) * 2009-07-07 2009-12-09 中国科学院山西煤炭化学研究所 活性炭表面的钝化方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6576369B1 (en) * 1996-12-25 2003-06-10 Sumitomo Metal Industries, Ltd. Graphite powder suitable for negative electrode material of lithium ion secondary batteries
CN1248548A (zh) * 1998-09-22 2000-03-29 中国科学院山西煤炭化学研究所 一种超细炭粉的制备方法
CN101597056A (zh) * 2009-07-07 2009-12-09 中国科学院山西煤炭化学研究所 活性炭表面的钝化方法

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