空心玻璃微珠对硅烷改性聚醚密封胶性能的影响研究

Study on influence of hollow glass bead on properties of silane-modified polyether sealant

以硅烷改性聚醚树脂(MS)为主体原料,与增塑剂、空心玻璃微珠、补强填料、除水剂、偶联剂和催化剂等反应,制备了一种应用于装配式建筑领域的MS密封胶。着重探讨了空心玻璃微珠添加方式及用量对MS密封胶的密度、挤出性、导热系数的影响,并考察了密封胶的力学性能。研究结果表明:保持基础配方不变,另外添加空心玻璃微珠时,挤出性显著增加,添加量在10~15份时制得的MS密封胶性能较优;保持基础配方其他物质不变,用空心玻璃微珠替代重质碳酸钙时,用量为8~20份制得的MS密封胶性能较优。

Using silane-modified polyether resin(MS)as the main raw material,and reacting with plasticizer,hollow glass bead,reinforcing filler,dehydrating agent,coupling agent and catalyst,a kind of MS sealant used in the field of prefabricated building was prepared.The influence of the adding method and amount of hollow glass bead on the density,extrudability and thermal conductivity of MS sealant was emphatically discussed,and the mechanical properties of the sealant were also investigated.The research results showed that keeping the basic formula unchanged,when adding hollow glass bead,the extrudability was significantly increased,and the MS sealant performance was relatively excellent when the adding amount was 10-15 phr.Keeping the other substances unchanged in the basic formula,when using hollow glass bead to replace heavy calcium carbonate,the MS sealant performance was relatively excellent with the using amount of 8-20 phr.