CN104538081B - 一种环保导电银浆 - Google Patents
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Abstract
本发明公开了一种环保导电银浆,它是由下述重量份的原料组成的:高分散导电银粉80‑91、聚对苯二甲酸丙二酯11‑13、尼龙酸甲酯20‑30、四硼酸钾0.3‑1、氧化铋0.06‑0.1、聚氧化丙烯二醇1‑2、环氧大豆油1‑1.5、脂肪酸二乙醇酰胺0.3‑0.5、二巯丙磺酸钠0.1‑0.2、油酸1‑2、玻璃粉10‑12,本发明的高分散导电银粉是的纳米银粉均匀而致密地包覆于高分子微球的表面,不仅可以减少贵金属银粉的用量,降低生产成本,同时也大大提高了纳米银粉的分散性和稳定性。
Description
技术领域
本发明主要涉及导电银浆领域,尤其涉及一种环保导电银浆。
背景技术
传统的导电银浆中采用金属银颗粒作为银浆的主要成分,其导电性也是靠它来实现,它均匀的分散到连结剂中,在印刷前,使浆液构成一定粘度的印料,在印刷后,使银浆的微粒与基材间形成稳定的结合,但是由于银金属价格相对昂贵,所以可以考虑采用银包覆的方式来降低金属银颗粒的成本。
发明内容
本发明目的就是提供一种环保导电银浆。
本发明是通过以下技术方案实现的:
一种环保导电银浆,其特征在于它是由下述重量份的原料制成的:
高分散导电银粉80-91、聚对苯二甲酸丙二酯11-13、尼龙酸甲酯20-30、四硼酸钾0.3-1、氧化铋0.06-0.1、聚氧化丙烯二醇1-2、环氧大豆油1-1.5、脂肪酸二乙醇酰胺0.3-0.5、二巯丙磺酸钠0.1-0.2、油酸1-2、玻璃粉10-12;
所述的高分散导电银粉是由下述重量份的原料制备而成的:
纳米氧化铝5-10、癸二酸二辛酯0.1-0.2、去离子水300-400、苯乙烯4-7、烷基酚聚氧乙烯醚0.8-1、硅烷偶联剂KH560 1-2、过硫酸铵0.01-0.02、硝酸银131-140、聚乙烯吡咯烷酮1-2、次磷酸钠30-40、三(壬苯基)亚磷酸盐2-3;
将纳米氧化铝、癸二酸二辛酯、硅烷偶联剂KH560混合,500-700转/分搅拌混合20-30分钟,加入苯乙烯、烷基酚聚氧乙烯醚、去离子水重量的30-35%,磁力搅拌40-50分钟,加入过硫酸铵,超声波震荡10-15h,得纳米乳液;
将硝酸银、聚乙烯吡咯烷酮混合,加入剩余的去离子水重量的40-50%,搅拌均匀,得氧化液;
将剩余各原料混合,滴加氨水,调节PH为10-10.5,为还原液;
将上述氧化液滴加到还原液中,滴加完毕后加入纳米乳液,搅拌反应30-50分钟,离心分离,用去离子水和乙醇洗涤3-5次,烘干,即得。
所述的环保导电银浆的制备方法,其特征在于包括以下步骤:
(1)将脂肪酸二乙醇酰胺加入到环氧大豆油中,在60-65℃下搅拌混合3-5分钟,得酯化分散剂;
(2)将聚对苯二甲酸丙二酯加入到尼龙酸甲酯中,搅拌均匀后加入酯化分散剂,搅拌均匀,加入二巯丙磺酸钠、氧化铋,充分混合,得有机载体;
(3)将聚氧化丙烯二醇、油酸混合,搅拌均匀后加入四硼酸钾,在60-70℃下搅拌混合2-4分钟,得活性剂;
(4)将高分散导电银粉加入到有机载体中,混合均匀,加入活性剂和剩余各原料,高速分散,送入三辊研磨机上进行混合,研磨浆料粒度至8-15微米,即得成品。
本发明的优点是:
本发明的高分散导电银粉是将纳米银粉均匀而致密地包覆于高分子微球的表面,不仅可以减少贵金属银粉的用量,降低生产成本,同时也大大提高了纳米银粉的分散性和稳定性;
本发明的有机载体,通过加入分散剂,可以有效的改善浆料粘性,提高流平性,使得浆料分布均匀,银粉与玻璃粉容易成团聚态;
本发明采用尼龙酸甲酯作为溶剂,是一种高沸点环保溶剂,可以明显降低对环境的污染。
具体实施方式
实施例1
一种环保导电银浆,其特征在于它是由下述重量份的原料制成的:
高分散导电银粉91、聚对苯二甲酸丙二酯13、尼龙酸甲酯30、四硼酸钾0.3、氧化铋0.06、聚氧化丙烯二醇2、环氧大豆油1.5、脂肪酸二乙醇酰胺0.5、二巯丙磺酸钠0.2、油酸2、玻璃粉12;
所述的高分散导电银粉是由下述重量份的原料制备而成的:
纳米氧化铝10、癸二酸二辛酯0.2、去离子水400、苯乙烯7、烷基酚聚氧乙烯醚0.8、硅烷偶联剂KH560 2、过硫酸铵0.02、硝酸银131、聚乙烯吡咯烷酮2、次磷酸钠40、三(壬苯基)亚磷酸盐2;
将纳米氧化铝、癸二酸二辛酯、硅烷偶联剂KH560混合,700转/分搅拌混合20分钟,加入苯乙烯、烷基酚聚氧乙烯醚、去离子水重量的35%,磁力搅拌50分钟,加入过硫酸铵,超声波震荡15h,得纳米乳液;
将硝酸银、聚乙烯吡咯烷酮混合,加入剩余的去离子水重量的50%,搅拌均匀,得氧化液;
将剩余各原料混合,滴加氨水,调节PH为10.5,为还原液;
将上述氧化液滴加到还原液中,滴加完毕后加入纳米乳液,搅拌反应50分钟,离心分离,用去离子水和乙醇洗涤3次,烘干,即得。
一种环保导电银浆的制备方法,其特征在于包括以下步骤:
(1)将脂肪酸二乙醇酰胺加入到环氧大豆油中,在65℃下搅拌混合5分钟,得酯化分散剂;
(2)将聚对苯二甲酸丙二酯加入到尼龙酸甲酯中,搅拌均匀后加入酯化分散剂,搅拌均匀,加入二巯丙磺酸钠、氧化铋,充分混合,得有机载体;
(3)将聚氧化丙烯二醇、油酸混合,搅拌均匀后加入四硼酸钾,在70℃下搅拌混合2分钟,得活性剂;
(4)将高分散导电银粉加入到有机载体中,混合均匀,加入活性剂和剩余各原料,高速分散,送入三辊研磨机上进行混合,研磨浆料粒度至8-15微米,即得成品。
性能测试:
搅拌后无硬块、呈均匀状态;
细度≤15μm;
附着力4.8B;
硬度1.2H。
Claims (1)
1.一种环保导电银浆,其特征在于它是由下述重量份的原料制成的: 高分散导电银粉80-91、聚对苯二甲酸丙二酯11-13、尼龙酸甲酯20-30、四硼酸钾0.3-1、氧化铋0.06-0.1、聚氧化丙烯二醇1-2、环氧大豆油1-1.5、脂肪酸二乙醇酰胺0.3-0.5、二巯丙磺酸钠0.1-0.2、油酸1-2、玻璃粉10-12;
所述的高分散导电银粉是由下述重量份的原料制备而成的: 纳米氧化铝5-10、癸二酸二辛酯0.1-0.2、去离子水300-400、苯乙烯4-7、烷基酚聚氧乙烯醚0.8-1、硅烷偶联剂KH5601-2、过硫酸铵0.01-0.02、硝酸银131-140、聚乙烯吡咯烷酮1-2、次磷酸钠30-40、三(壬苯基)亚磷酸盐2-3; 所述的高分散导电银粉的制备方法为:将纳米氧化铝、癸二酸二辛酯、硅烷偶联剂KH560混合,500-700转/分搅拌混合20-30分钟,加入苯乙烯、烷基酚聚氧乙烯醚、去离子水重量的30-35%,磁力搅拌40-50分钟,加入过硫酸铵,超声波震荡10-15h,得纳米乳液; 将硝酸银、聚乙烯吡咯烷酮混合,加入剩余的去离子水重量的40-50%,搅拌均匀,得氧化液; 将剩余各原料混合,滴加氨水,调节pH为10-10.5,为还原液; 将上述氧化液滴加到还原液中,滴加完毕后加入纳米乳液,搅拌反应30-50分钟,离心分离,用去离子水和乙醇洗涤3-5 次,烘干,即得;
所述的环保导电银浆的制备方法包括以下步骤:
(1)将脂肪酸二乙醇酰胺加入到环氧大豆油中,在60-65℃下搅拌混合3-5分钟,得酯化分散剂;
(2)将聚对苯二甲酸丙二酯加入到尼龙酸甲酯中,搅拌均匀后加入酯化分散剂,搅拌均匀,加入二巯丙磺酸钠、氧化铋,充分混合,得有机载体;
(3)将聚氧化丙烯二醇、油酸混合,搅拌均匀后加入四硼酸钾,在60-70℃下搅拌混合2-4分钟,得活性剂;
(4)将高分散导电银粉加入到有机载体中,混合均匀,加入活性剂和剩余各原料,高速分散,送入三辊研磨机上进行混合,研磨浆料粒度至8-15 微米,即得成品。
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JPH07307109A (ja) * | 1994-03-15 | 1995-11-21 | Hitachi Chem Co Ltd | 導電ペースト |
US5951918A (en) * | 1995-02-08 | 1999-09-14 | Hitachi Chemical Company, Ltd. | Composite electroconductive powder, electroconductive paste, process for producing electroconductive paste, electric circuit and process for producing electric circuit |
CN103192074A (zh) * | 2013-04-10 | 2013-07-10 | 张宇 | 一种高分散型银粉和薄膜电池用导电银浆 |
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JPH07307109A (ja) * | 1994-03-15 | 1995-11-21 | Hitachi Chem Co Ltd | 導電ペースト |
US5951918A (en) * | 1995-02-08 | 1999-09-14 | Hitachi Chemical Company, Ltd. | Composite electroconductive powder, electroconductive paste, process for producing electroconductive paste, electric circuit and process for producing electric circuit |
CN103192074A (zh) * | 2013-04-10 | 2013-07-10 | 张宇 | 一种高分散型银粉和薄膜电池用导电银浆 |
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