CN111074258B - 一种室温下使铜箔变黑并恢复原色的方法 - Google Patents
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Abstract
本发明公开了一种室温下使铜箔变黑并恢复原色的方法,包括:配制0.8 mol/L的H2SO4溶液,然后以0.8 mol/L的H2SO4为溶剂配置一定浓度的CuSO4溶液,然后在上述50mL溶液中加入2mL的离子液体并搅拌均匀,得到溶液A,随后将市售铜箔放置于溶液A中浸泡一定时间后,取出用蒸馏水冲洗3次,自然风干,随后,将处理干燥后的铜箔放置于一太阳光模拟光源下,照射一定时间后,铜箔即变为黑色,将变黑的铜箔重新置于溶液A中浸泡一定时间后,铜箔又恢复原色。本发明工艺简单,原料易得,成本低廉,在光致变色领域以及军事隐身材料等方面存在应用价值。
Description
技术领域
本发明涉及一种室温下使铜箔变黑并恢复原色的方法,属于能源材料技术领域。
背景技术
铜箔具有良好的导电导热性、延展性以及较宽的温度使用范围,在计算器、通讯设备、锂离子电池、汽车等领域得到了广泛应用。在一些特定的情况下,在使用铜箔时往往需要改变其颜色以满足美观或实际需求。目前改变铜箔表面颜色的方法主要有物理方法和化学方法,物理方法主要是在铜箔表面涂覆一层油漆从而改变其颜色,而化学方法则是在铜箔表面生成一层其他物质。显然,铜箔表面的油漆受外界条件的影响较大,容易脱落和起皮。而在铜箔表面生成一层化学物质,往往需要苛刻的工艺条件,制作成本高。
发明内容
本发明的目的在于提供一种室温下使铜箔变黑并恢复原色的方法。
将市售铜箔浸泡在含有离子液体的酸性硫酸铜溶液中,过一段时间后取出,用蒸馏水将铜箔冲洗数次,自然风干。之后,将其置于太阳光模拟光源下照射一定时间后,则铜箔颜色变黑,将变黑后的铜箔重新置于原溶液中,浸泡一段时间后可恢复原色。
具体的,本发明给出的一种室温下使铜箔变黑并恢复原色的方法,包括以下步骤:
(1)材料准备
硫酸;CuSO4;离子液体;市售铜箔
(2)样品制备
配制0.8 mol/L的H2SO4溶液, 然后以0.8 mol/L的H2SO4为溶剂配置浓度0.2~1.5mol/L的CuSO4溶液,在上述50mL溶液中加入2mL的离子液体并搅拌均匀,得到溶液A,随后将市售铜箔放置于溶液A中浸泡5~30 min,取出铜箔用蒸馏水冲洗3次,自然风干,随后,将处理干燥后的铜箔放置于太阳光模拟光源下,在距离光源10~30 cm处照射5~40 min,铜箔变为黑色,将变黑后的铜箔重新置于溶液A中浸泡6~12h,铜箔又恢复原色。
本发明方法中,离子液体为 1-丁基-3-甲基咪唑氯盐,1,3-二甲基咪唑氯盐,1-苄基-2-氯甲基咪唑盐中的一种。
实践证明,本发明可以使铜箔表面颜色发生显著变化,然后又恢复原色。
本发明取得的有益效果是:本发明突破了原先通过刷油漆,或在铜箔表面覆盖其他物质以改变铜箔颜色的思维定式,通过光照的方法改变了铜箔的颜色。本发明原料易得,价格低廉,反应条件温和,简单易行,安全可控,适合规模化生产。本发明在铜箔变色以及军事隐身材料研究中具有潜在的应用价值。
附图说明
图1为浸泡后以及光照后的铜箔照片。
图2为光照前后铜箔表面物质的XRD图谱。
具体实施方式
以下实施例用于说明本发明。
实施例1
首先配制0.8 mol/L的H2SO4溶液, 然后以0.8 mol/L的H2SO4为溶剂配置浓度为0.8mol/L的CuSO4溶液。之后在上述50mL溶液中加入2mL的1,3-二甲基咪唑氯盐并搅拌均匀,得到溶液A。随后将市售铜箔放置于溶液A中浸泡10 min,之后,取出铜箔用蒸馏水冲洗3次后,自然风干。随后,将处理干燥后的铜箔放置于太阳光模拟光源下(仪器型号为SXDN-150-E),在距离光源15 cm处照射10 min后,铜箔即变为黑色。将变黑后的铜箔重新置于溶液A中浸泡10h,铜箔又恢复原色。
图1中o,a分别为浸泡前后的铜箔的照片, I30为光照30min后的铜箔照片,b为重新浸泡后的铜箔的照片。从图1中可以看出,浸泡后铜箔表面的颜色由铜色变为暗黄色。将其放置于太阳光模拟光源下(仪器型号为SXDN-150-E)光照30min后,铜箔即变为黑色。有意思的是,将变黑后的铜箔重新置于溶液A中浸泡10 h,铜箔又基本恢复暗黄色。
由图2可见,铜箔a表面的物质为CuCl,而光照30min后,铜箔表面的物质依然是CuCl,未发生变化。
实施例2
首先配制0.8 mol/L的H2SO4溶液, 然后以0.8 mol/L的H2SO4为溶剂配置浓度为1.2 mol/L的CuSO4溶液。之后在上述50mL溶液中加入2mL的1,3-二甲基咪唑氯盐并搅拌均匀,得到溶液A。随后将市售铜箔放置于溶液A中浸泡15 min,之后,取出铜箔用蒸馏水冲洗3次后,自然风干。随后,将处理干燥后的铜箔放置于太阳光模拟光源下(仪器型号为SXDN-150-E),在距离光源10 cm处照射15 min后,铜箔即变为黑色。将变黑后的铜箔重新置于溶液A中浸泡10h,铜箔又恢复原色。
实施例3
首先配制0.8 mol/L的H2SO4溶液, 然后以0.8 mol/L的H2SO4为溶剂配置浓度为0.5 mol/L的CuSO4溶液。之后在上述50mL溶液中加入2mL的1-苄基-2-氯甲基咪唑氯盐并搅拌均匀,得到溶液A。随后将市售铜箔放置于溶液A中浸泡12 min,之后,取出铜箔用蒸馏水冲洗3次后,自然风干。随后,将处理干燥后的铜箔放置于太阳光模拟光源下(仪器型号为SXDN-150-E),在距离光源12 cm处照射14 min后,铜箔即变为黑色。将变黑后的铜箔重新置于溶液A中浸泡8h,铜箔又恢复原色。
实施例4
首先配制0.8 mol/L的H2SO4溶液, 然后以0.8 mol/L的H2SO4为溶剂配置浓度为1.0 mol/L的CuSO4溶液。之后在上述50mL溶液中加入2mL的1-丁基-3-甲基咪唑氯盐并搅拌均匀,得到溶液A。随后将市售铜箔放置于溶液A中浸泡14 min,之后,取出铜箔用蒸馏水冲洗3次后,自然风干。随后,将处理干燥后的铜箔放置于太阳光模拟光源下(仪器型号为SXDN-150-E),在距离光源12 cm处照射10 min后,铜箔即变为黑色。将变黑后的铜箔重新置于溶液A中浸泡9h,铜箔又恢复原色。
实施例5
首先配制0.8 mol/L的H2SO4溶液, 然后以0.8 mol/L的H2SO4为溶剂配置浓度为1.4 mol/L的CuSO4溶液。之后在上述50mL溶液中加入2mL的1-丁基-3-甲基咪唑氯盐并搅拌均匀,得到溶液A。随后将市售铜箔放置于溶液A中浸泡20 min,之后,取出铜箔用蒸馏水冲洗3次后,自然风干。随后,将处理干燥后的铜箔放置于太阳光模拟光源下(仪器型号为SXDN-150-E),在距离光源12 cm处照射20 min后,铜箔即变为黑色。将变黑后的铜箔重新置于溶液A中浸泡10h,铜箔又恢复原色。
实施例6
首先配制0.8 mol/L的H2SO4溶液, 然后以0.8 mol/L的H2SO4为溶剂配置浓度为1.3 mol/L的CuSO4溶液。之后在上述50mL溶液中加入2mL的1-苄基-2-氯甲基咪唑氯盐并搅拌均匀,得到溶液A。随后将市售铜箔放置于溶液A中浸泡25 min,之后,取出铜箔用蒸馏水冲洗3次后,自然风干。随后,将处理干燥后的铜箔放置于太阳光模拟光源下(仪器型号为SXDN-150-E),在距离光源12 cm处照射25 min后,铜箔即变为黑色。将变黑后的铜箔重新置于溶液A中浸泡12h,铜箔又恢复原色。
Claims (1)
1.一种室温下使铜箔变黑并恢复原色的方法,其特征在于包括以下步骤:
(1)材料准备
硫酸;CuSO4;离子液体;市售铜箔
(2)样品制备
配制0.8 mol/L的H2SO4溶液, 然后以0.8 mol/L的H2SO4为溶剂配置浓度0.2~1.5mol/L的CuSO4溶液,在上述50mL溶液中加入2mL的离子液体并搅拌均匀,得到溶液A,随后将市售铜箔放置于溶液A中浸泡5~30 min,取出铜箔用蒸馏水冲洗3次,自然风干,随后,将处理干燥后的铜箔放置于太阳光模拟光源下,在距离光源10~30 cm处照射5~40 min,铜箔变为黑色,将变黑后的铜箔重新置于溶液A中浸泡6~12h,铜箔又恢复原色;
其中,离子液体为 1-丁基-3-甲基咪唑氯盐、1,3-二甲基咪唑氯盐、1-苄基-2-氯甲基咪唑盐中的一种。
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CN109860514A (zh) * | 2019-03-25 | 2019-06-07 | 河北师范大学 | 一种改变锂电池集流体铜箔表面形貌的方法 |
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GB1259676A (en) * | 1968-03-06 | 1972-01-12 | Obayashi Gumi Kk | Formation of coatings on copper containing materials |
CN1267748A (zh) * | 1999-03-18 | 2000-09-27 | 中国科学院福建物质结构研究所二部 | 铜表面阴极电解着色新工艺 |
CN109860514A (zh) * | 2019-03-25 | 2019-06-07 | 河北师范大学 | 一种改变锂电池集流体铜箔表面形貌的方法 |
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