Parzych Sławomir, Paszkowska Maja, Stanisz Dawid, Bąk Agnieszka, Łach Michał
Chair of Material Engineering and Physics, Cracow University of Technology, Jana Pawła II 37, 31-864 Cracow, Poland.
Wiśniowski Sp. z o.o. S.K.A., Wielogłowy 153, 33-311 Wielogłowy, Poland.
Materials (Basel). 2023 Nov 3;16(21):7035. doi: 10.3390/ma16217035.
Geopolymer materials have long been known for their competitive properties against traditional construction materials. Their special features include high resistance to elevated temperatures and good fire resistance. They are typically used as insulating materials at temperatures not exceeding 100 °C (because they can achieve a thermal conductivity coefficient of 0.060 W/m × K or less under these conditions). Still, they can also be used as thermal insulation at temperatures exceeding 1000 °C. One technology that uses very high temperatures is metal welding technology, where temperatures often exceed as many as 3000 °C. Geopolymers, due to their properties, can also be an interesting new alternative in various welding applications. This paper presents the preliminary results of pot-proofing the resistance of geopolymers to temperatures exceeding 3000 °C. Test results of a foamed geopolymer insulating a steel substrate are presented, and a geopolymer mold for thermite rail welding was made and realistically tested. The results confirmed the feasibility of using cast geopolymer molds for thermite welding of railroad rails. The geopolymer material performed well during the test and no cracks or other damage occurred. The following article presents the potential of using geopolymer materials for welding applications.
地质聚合物材料长期以来因其相对于传统建筑材料的竞争特性而闻名。它们的特殊特性包括耐高温性和良好的耐火性。它们通常在不超过100°C的温度下用作绝缘材料（因为在这些条件下它们可以达到0.060W/m×K或更低的导热系数）。不过，它们也可以在超过1000°C的温度下用作隔热材料。一种使用非常高温度的技术是金属焊接技术，其温度常常高达3000°C以上。由于其特性，地质聚合物在各种焊接应用中也可能成为一种有趣的新选择。本文介绍了使地质聚合物耐受超过3000°C温度的初步结果。给出了泡沫地质聚合物对钢基材进行隔热的测试结果，并制作了用于铝热焊轨的地质聚合物模具并进行了实际测试。结果证实了使用铸造地质聚合物模具进行铁轨铝热焊接的可行性。地质聚合物材料在测试过程中表现良好，未出现裂缝或其他损坏。以下文章介绍了将地质聚合物材料用于焊接应用的潜力。
