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首页> 外文期刊>Archives of Foundry Engineering >Polymer Binder BioCo3 with Silicates and its Application to Microwave-Cured Moulding Sand
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Polymer Binder BioCo3 with Silicates and its Application to Microwave-Cured Moulding Sand

机译：含硅酸盐的聚合物粘结剂BioCo3及其在微波固化型砂中的应用

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The effects of silica additive (Poraver) on selected properties of BioCo3 binder in form of an aqueous poly(sodium acrylate) and dextrin (PAANa/D) binder were determined. Based on the results of the thermoanalytical studies (TG-DTG, FTIR, Py-GC/MS), it was found that the silica additive results in the increase of the thermostability of the BioCo3 binder and its contribution does not affect the increase in the level of emissions of organic destruction products. Compounds from group of aromatic hydrocarbons are only generated in the third set temperature range (420-838°C). The addition of silicate into the moulding sand with BioCo3 causes also the formation of a hydrogen bonds network with its share in the microwave radiation field and they are mainly responsible for maintaining the cross-linked structures in the mineral matrix system. As a consequence, the microwave curing process in the presence of Poraver leads to improved strength properties of the moulding sand (Rum). The addition of Poraver's silica to moulding sand did not alter the permeability of the moulding sand samples, and consequently reduced their friability. Microstructure investigations (SEM) of microwave-cured samples have confirmed that heterogeneous sand grains are bonded to one another through a binder film (bridges).
机译：确定了二氧化硅添加剂（Poraver）对水性聚（丙烯酸钠）和糊精（PAANa / D）粘合剂形式的BioCo3粘合剂的选定性能的影响。根据热分析研究的结果（TG-DTG，FTIR，Py-GC / MS），发现二氧化硅添加剂可导致BioCo3粘合剂的热稳定性提高，并且其贡献不会影响BioCo3粘合剂的提高。有机破坏产物的排放水平。仅在第三设定温度范围（420-838°C）中产生芳族烃化合物。用BioCo3将硅酸盐添加到型砂中也会引起氢键网络的形成，并在微波辐射领域中占有一定份额，它们主要负责保持矿物基质系统中的交联结构。结果，在Poraver的存在下的微波固化过程导致型砂（Rum）的强度性能提高。在型砂中添加Poraver二氧化硅不会改变型砂样品的渗透性，因此降低了其脆性。微波固化样品的微观结构研究（SEM）已确认，异质砂粒通过粘结膜（桥）彼此结合。

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