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首页> 外文期刊>Journal of Applied Polymer Science >Response surface optimization for improving the processing behavior of melamine formaldehyde impregnation resins
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Response surface optimization for improving the processing behavior of melamine formaldehyde impregnation resins

机译：改善三聚氰胺甲醛浸渍树脂加工行为的响应表面优化

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摘要

Melamine-formaldehyde resins are widely used for decorative paper impregnation. Resin properties relevant for impregnation are mainly determined already at the stage of resin synthesis by the applied reaction conditions. Thus, understanding the relationship between reaction conditions and technological properties is important. Response surface methodology based on orthogonal parameter level variations is the most suitable tool to identify and quantify factor effects and deduce causal correlation patterns. Here, two major process factors of MF resin synthesis were systematically varied using such a statistical experimental design. To arrive at resins having a broad range of technological properties, initial pH and M:F ratio were varied in a wide range (pH: 7.9-12.1; M:F ratio: 1:1.5-1:4.5). The impregnation behavior of the resins was modeled using viscosity, penetration rate and residual curing capacity as technological responses. Based on the response surface models, nonlinear and synergistic action of process factors was quantified and a suitable process window for preparing resins with favorable impregnation performance was defined. It was found that low M:F ratios (similar to 1:2-1:2.5) and comparatively high starting pHs (similar to pH 11) yield impregnation resins with rapid impregnation behavior and good residual curing capacity.
机译：三聚氰胺-甲醛树脂广泛用于装饰纸浸渍。与浸渍相关的树脂性能主要是在树脂合成阶段通过应用的反应条件确定的。因此，了解反应条件和工艺性能之间的关系非常重要。基于正交参数水平变化的响应面方法是识别和量化因子效应以及推断因果相关模式的最合适工具。在这里，使用这种统计实验设计系统地改变了MF树脂合成的两个主要工艺因素。为了获得具有广泛技术性能的树脂，初始pH值和M:F比在很大范围内变化（pH:7.9-12.1；M:F比：1:1.5-1:4.5）。以粘度、渗透率和残余固化能力作为工艺响应，对树脂的浸渍行为进行了模拟。基于响应面模型，量化了工艺因素的非线性和协同作用，确定了制备具有良好浸渍性能树脂的合适工艺窗口。研究发现，低M:F比（类似于1:2-1:2.5）和相对较高的起始pH值（类似于pH 11）可以生产出具有快速浸渍行为和良好残余固化能力的浸渍树脂。

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