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ED7000高泳透力电泳漆的应用研究.pdf

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ED7000 高泳透力电泳漆的应用研究

曹晓根*,高静,王立然

(1.长城汽车股份有限公司技术中心,河北省汽车工程技术研究中心,河北保定 071000)

摘要:ED7000 高泳透力薄膜电泳漆由某国际汽车涂料供应商所 material), wide ranges of construction conditions, and easy

研发,能够满足白车身高泳透力的需求,并可降低涂料消耗和 bath management. The disadvantages of the paint are high

能耗。将 ED7000 乳液和色浆按 8∶1 的质量比在小型电泳槽内 electrophoretic voltage (20 V higher than that of a

混合,加入纯水调整固体分至 23%左右,在(32 ± 2) °C 下熟化 conventional process), worse roughness (Ra = 0.30-0.35 μm),

48 h 后进行相关的认证实验,测试了槽液参数和漆膜性能;将 and difficulty in coating the top. The paint is suitable to be

该电泳漆与三涂三烘工艺、免中涂工艺以及 PVC、聚氨酯玻璃 applied to A- and B-class cars with smaller areas to be

胶和玻璃水等进行相关的配套性试验,并在生产线进行试生产。 coated by electrophoresis.

研究表明,ED7000 电泳漆具有高泳透力、低膜厚(15 μm 以下, Keywords: automobile coating; electrophoretic paint;

含磷化层,可节约 12%的涂料)、施工范围宽、槽液容易管理的 throwing power; thin film; matchability

优点。但它也存在电泳电压较高(高于常规工艺 20 V 左右)、粗 First-author’s address: Hebei Province Automobile

糙度稍差(Ra 为 0.30 ~ 0.35 μm)、顶盖上膜困难等缺点,适合在 Engineering Technology Research Center, Technology

电泳面积较小的 A 级车和 B 级车上使用。 Center of Changcheng Automobile Co., Ltd., Baoding

关键词:汽车涂装;电泳漆;泳透力;薄膜;配套性 071000, China

中图分类号:TG178; TQ633.52 文献标志码:A

文章编号:1004 – 227X (2014) 10 – 0433 – 04 电泳是汽车涂装的重要组成部分,主要是赋予车

Study on application of ED7000 electrophoretic paint 身良好的耐腐蚀能力。电泳工艺以其涂料利用率高、

with high throwing power // CAO Xiao-gen*, GAO Jing, 质量均一、适合大批量生产等特点而受到青睐。然而

WANG Li-ran 电泳由于受到电场自身特点的影响,对白车身内腔的

Abstract: ED7000 electrophoretic paint is a high-

防腐保护一直是其弱点。虽然白车身采用增加工艺孔、

throwing-power and thin-film product developed by an

international automobile coating supplier to meet the 尽可能避免盒状结构等产品设计技巧,但仍难以避免

requirement of high throwing power for coating the car 内腔膜厚过低等问题。ED7000 是某国际汽车涂料供应

bodies in white and decrease the consumption of coating 商新研发的薄膜高泳透力防腐蚀电泳漆,定位于满足

materials and energy. In the paper, the ED7000 emulsion 白车身高泳透力需求,并可降低涂料消耗,降低能耗。

and the pigment paste were mixed with a mass ratio of 8 to 1

目前,ED7000 高泳透力薄膜电泳漆在国内的应用才刚

in a small electrophoretic tank, followed by adding water to

uv固化的电泳过程和一般的电泳过程完全相同,根据电泳涂料树脂的阴、阳离子性分阳极电泳涂料和阴极电泳涂料。槽内装有电泳漆循环管道和阳极蓝、导电极板ed电泳英文,主槽连接副槽,并通过耐酸碱磁力泵将副槽的电泳漆循环搅拌至主槽,以保持电泳漆工作液均匀,阴极电泳涂装线,使电泳漆不沉积在电泳槽底部,漆液的循环一般要求每小时4~6次,汽车部件电泳涂装线,当循环泵开动时,槽内漆液液面应均匀翻动。电泳涂漆电源100a/300ved电泳英文,输出电压为0~300v, 无级调压, 正常工作时电压可根据漆种要求(200±40v)操作,有缓慢升压功能,同时要求脉冲电压不能超过电泳电压的5%,电压调定的精度在±3%以内。

(32±2) °C for 48 h. Some attestation tests were carried out, 推广应用提供参考。

and the bath parameters and coating properties were

1 ED7000 高泳透力薄膜电泳漆的认证

examined. Whether the electrophoretic paint can be matched

with the 3-coat-3-bake or midcoat-free process as well as the ED7000 电泳漆属于新一代电泳漆产品,由产品介

PVC, polyurethane glass adhesive, and water glass were 绍可知其具有高泳透力、低膜厚、低能耗等优点。由

studied. The trial production was carried out on a real 于电泳漆需与磷化、中涂、色漆和 PVC 胶等多种材料

production line. It was found that the ED7000 paint has

配套,为了保证良好的匹配性能,需对产品进行试验

advantages of high throwing power, low film thickness (less

及试生产认证,以保证汽车产品的良好品质。对供应

than 15 μm with a phosphating layer, saving 12% of coating

商的新产品的认证主要通过以下 3 个步骤:(1)产品实

收稿日期:2014–02–17 修回日期:2014–03–31 验合格,各种参数及漆膜外观和性能(含与磷化的配套



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