In a current paper, approaches are being sought to improve the recoatability of UV coatings. Different approaches are chosen to change the surface properties.

By modifying the drying and cross-linking processes of the paint, overpaintability is ensured.

目前一篇论文正在寻求提高UV涂料的过涂性的方法.研究者试图使用不同的方法来改变表面性质.通过改进涂料的干燥和交联工艺,保证了涂料的过涂性.

The pre-treatment methods of the first layer ensure better wetting, adhesion and bond strength between the UV coating substrate and the repair coating. On the one hand, the surface is pre-treated physically or wet-chemically. On the other, primer is used, which is applied as an adhesion-promoting layer.

研究发现:

对第一层涂料的预处理,保证了UV涂层底材与修复涂层之间更好的润湿性,附着力和附着强度.

一方面,表面经过物理或湿化学预处理.另一方面,使用底漆,作为促粘层.

As part of a further investigation, the UV coating is modified in its formulation to bring about better adhesion for the subsequent layer. Another experiment is to adjust the drying sequences to allow overcoating. For this purpose, the coating is merely gelled under certain drying conditions.

进一步研究中,研究人员修改了UV涂层配方,为后续层提供了更好的附着力.

另一个实验是调整干燥顺序以提供过涂性.在这里,研究人员只是在一定的干燥条件下对涂料进行了凝胶化.

The limits of overpaintability are determined by means of double bond conversion and polyaddition conversion. The surface energies are related to the wettability and the adhesion. Conditions of bond strength are established and discussed. Grinding with P3000 abrasive paper and wet chemical treatments result in good adhesion. It is also shown that silicone additives can cause wetting problems. By modifying the drying and cross-linking processes of the paint, overpaintability is ensured.

研究表明,双键转换和多加成转换确定了过涂性的极限.表面能量与润湿性和附着性有关.

研究人员讨论并建立了附着强度的条件.用P3000磨纸研磨,并对表面做湿化学处理,可以让附着力变好.硅酮添加剂也会引起润湿问题.通过改进涂料的干燥和交联工艺,也能保证涂料的过涂性.

The study was conducted by Dennis Neuerer as a bachelor thesis at the Esslingen University. It is subject to an blocking period until 28 February 2027.

该研究是由Dennis Neuerer的学士论文.该论文的闭锁期至2027年2月28日.

 

图片来源:Ralfador Ralfadinski - Pixabay(符号图像).

原文来源: www.european-coatings.com
翻译:VL-九维,翻译内容未经允许不得转载.