首页> 外文会议>Polyurethanes Conference, Oct 8-11, 2000, Boston, Massachusetts >A New Generation of Cell Openers for Rigid Foams―Improved Balance of Stabilization and Cell Opening
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A New Generation of Cell Openers for Rigid Foams―Improved Balance of Stabilization and Cell Opening

机译:新一代用于硬质泡沫的开孔器-改善了稳定和开孔的平衡

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This paper presents Goldschmidt's latest findings in respect to additives for opening cells in rigid and semirigid foams. Three new products, named TEGOSTAB~(~R) B 8871, B 8934 and B 8935, will be introduced. In this development special attention has been given to systems for automotive headliners, however the products are also suitable in other applications such as energy absorption, packaging and acoustic insulation, among others. These new additives are products combining stabilization and cell opening properties. These two functions are relevant in different phases of the foaming process. The mechanism of cell opening and how to influence it by chemical means will be demonstrated in detail. The open-cells content of these foams can be controlled by varying the concentration of the new additives in the formulation over a broad range while maintaining a relatively fine cell structure. Our evaluations have proven that the choice and the concentration of cell-opener depends strongly on the composition and characteristics of the foam formulation and the processing technology. Both the TEGOSTAB~(~R) B 8934 and B 8935 were developed over the past few months and tested with good results in lab experiments and pilot plant trials.
机译:本文介绍了Goldschmidt在硬质和半硬质泡沫中用于开孔的添加剂的最新发现。将推出三种新产品,分别是TEGOSTAB〜(〜R)B 8871,B 8934和B 8935。在这一发展中,已经特别关注了用于汽车顶篷的系统,但是该产品还适用于其他应用,例如能量吸收,包装和隔音等。这些新添加剂是兼具稳定性和开孔性能的产品。这两个功能在发泡过程的不同阶段相关。将详细说明细胞开放的机制以及如何通过化学手段对其进行影响。这些泡沫的开孔含量可以通过在较大范围内改变配方中新添加剂的浓度来控制,同时保持相对良好的孔结构。我们的评估证明,开孔剂的选择和浓度在很大程度上取决于泡沫配方的组成和特性以及加工技术。 TEGOSTAB B 8934和B 8935都是在过去几个月开发的,并在实验室实验和中试工厂测试中均取得了良好的结果。

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