product news/產品新聞
of part 1 plus 100 parts with part 2 in the sand, the SL system will allow the ability to keep the same 100 parts of part 1 but reduce part 2 by only using 80 parts. As a result, the binder mixture will contain the same weight of active material (phenolic resin and polyisocyanate) as well as additives, with a reduction of around one-third of the solvent’s weight (Fig. 1). Te overall strength profile of the SL system is higher than that of normal systems, and the humidity resistance has been optimized without sacrificing bench life performance (Fig. 2). Te advantages coming from this huge solvent reduction in the SL system are numerous. With less solvent, emission potential is reduced. Further, the new SL system will lower the organic material content. Tis will allow for an increased rate of polymer burning, reducing the cause of emission. Testing in aluminum casting facilities has illustrated
good shakeout performance while still maintaining excel- lent dimensional accuracy. In other foundry testing, amine demands were shown to have been reduced. Amine is used in the coldbox process as a catalyst to initiate the reaction between the OH- and NCO-groups. ASK Chemicals continues to work to duplicate and adapt this solution for ferrous applications.
Visit
www.ask-chemicals.com for more information.
份，减少第2部分。其结果是，粘结剂混合物将含有相同 的活性物质的重量（酚醛树脂和多异氰酸酯），以及作 为添加剂，减少了大约三分之一的溶剂的重量（图1）。 对SL系统的整体强度的档案高于正常的系统，已被优 化，而不会牺牲台寿命性能（图2），耐湿性。 来自这个巨大的减少溶剂SL系统的优点是多方面的。 使用较少的溶剂，减少排放的潜力。此外，新的SL系统 的有机物质的含量会降低。这将使聚合物燃烧率增加， 减少排放的原因。
在铝铸件设施的测试已经说明洗牌性能好，同时仍然 保持出色的尺寸精度。在其他代工测试，胺的需求已经 减少。胺在冷箱的过程中作为催化剂使用，以引发反应 的OH基和NCO基。
ASK化工品继续工作，以复制和适应这为有色金属应 用的解决方案。
更多信息访问
www.ask-chemicals.com。
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FOUNDRY-PLANET.COM | MODERN CASTING | CHINA FOUNDRY ASSOCIATION May 2013
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