Classification of Three Anti Paint Systems

Classification of Three Anti Paint Systems

Source: Maxcess-Shanghai
Date: September 12, 2025
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Three proof paint has high performance and very environmentally friendly properties, using polymer material technology to withstand various harsh environments. Below is a brief introduction to the three proof paint.

The basic components of three proof paint are polyurethane, epoxy resin, and acrylic acid. It can be diluted with diluent in a certain proportion to ensure that the performance of the paint film is greatly improved.


Polyurethane is one of the important types in the three proof paint system, with good flexibility and wear resistance, which can effectively prevent external environmental factors such as ultraviolet rays, acidic and alkaline gases, moisture, and salt spray from damaging the paint film.


Epoxy resin is another major system classification for three proof paint, with a relatively hard texture, excellent adhesion and chemical resistance, and good resistance to friction and chemical corrosion.


Acrylic acid is the main classification system for UV three proof paint, which has the advantages of fast curing speed and no solvent evaporation. UV three proof paint is more environmentally friendly than other solvent based three proof paints and is gradually replacing solvent based three proof paints as the preferred material for three proof coating in the electronics industry.


Overall, the UV conformal coating system belongs to a very stable chemical combination form. Its excellent protective performance, strong adhesion, and chemical resistance make it a popular choice in the industrial and automotive manufacturing fields.

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常见问题(FAQ)

问:三防漆主要有哪几种体系?

答:主流包括丙烯酸、聚氨酯、环氧树脂与有机硅体系,其中 UV 固化丙烯酸因速度快、无溶剂挥发,正逐步替代传统溶剂型成为电子涂覆优选。不同体系在柔韧性、耐温、附着力上各有侧重。

问:丙烯酸(UV)三防漆相比溶剂型有什么优势?

答:UV 三防漆固化速度快、几乎无溶剂挥发,更环保且产线节拍高;漆膜均匀、可控性好。相比溶剂型,它显著降低 VOC 与气味,更符合汽车制造与工业的环保要求。

问:三防漆涂覆前需要做哪些表面处理?

答:须先清洁 PCB 上的助焊剂、油污与颗粒,必要时进行等离子或烘烤除湿处理,确保漆膜与焊点、基材良好附着。对部分低表面能区域可配合底涂提升防护连续性。

问:三防漆的厚度和固化如何控制?

答:涂覆厚度通常控制在 25–100μm 以满足防护又不影响散热与测试。UV 体系需保证紫外光照强度与能量足够、照度均匀;双固化体系还需热固化补强阴影区,确保完全固化。

问:三防漆如何满足汽车/工业可靠性要求?

答:需关注耐湿热、耐盐雾、耐化学腐蚀与附着力,并符合无卤、低卤及环保法规。对汽车电子,建议选用兼具优良防护性、附着力与抗化学性的体系,并做温循、盐雾等可靠性验证。

Copyright: Shanghai Maxcess Materials Technology Co., Ltd Record number: Shanghai ICP No. 11019525-1sitemap

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