Silane terminated prepolymers for adhesives, sealants and coatings are of </span></span><span><span><span style="font-family:"">great <span>industrial importance. The...Silane terminated prepolymers for adhesives, sealants and coatings are of </span></span><span><span><span style="font-family:"">great <span>industrial importance. They are very important because of their low toxicity</span><span> over polyurethanes, silicones, and solvent-based products. Hence</span>, many pieces of literature which deal with the synthesis, properties and applications of this Si<span>lane terminated polymers hybrid system exist. Silylated polyether (MS polymers) </span>and Silylated Polyurethane Polymers (SPUR) are the bases for nu<span>merous sealants, adhesives and coatings used worldwide. A hybrid system mixed with </span><span>organic-polyurethane proportion and inorganic-alkoxysilane proportion</span> <span>com</span>bines the benefits of conventional polyurethane and silicone-based products.<span> This article reviews the chemistry of MS polymers and SPUR and their</span> <span>ad</span><span>vantages and disadvantages in silyl terminated prepolymer-based adhesives</span>, sea<span>lants and coatings as well as provides information on different end applications.展开更多
以不同官能度的组合聚醚和多亚甲基多苯基异氰酸酯(PAPI)为反应单体、氯化石蜡(CP52)为增塑剂、2,2′-双吗啉基二乙基醚(DMDEE)为催化剂和酮亚胺(ALT403)为潜固化剂,制备了一种强度高、发泡量大的OCF[单组分PU(聚氨酯)泡沫填缝剂],并探...以不同官能度的组合聚醚和多亚甲基多苯基异氰酸酯(PAPI)为反应单体、氯化石蜡(CP52)为增塑剂、2,2′-双吗啉基二乙基醚(DMDEE)为催化剂和酮亚胺(ALT403)为潜固化剂,制备了一种强度高、发泡量大的OCF[单组分PU(聚氨酯)泡沫填缝剂],并探讨了聚醚多元醇、增塑剂、潜固化剂和催化剂等对OCF性能的影响。研究结果表明:当组合聚醚中m(聚醚三元醇MN1000)∶m(聚醚二元醇DL400)=50∶50、w(CP52)=25%、w(ALT403)=4%和w(DMDEE)=0.4%(均相对于OCF质量而言)时,OCF的综合性能相对最好(其拉伸强度为127.5 k Pa,有效发泡倍数为69.1),并且泡沫材料软韧、泡孔均匀。展开更多
文摘Silane terminated prepolymers for adhesives, sealants and coatings are of </span></span><span><span><span style="font-family:"">great <span>industrial importance. They are very important because of their low toxicity</span><span> over polyurethanes, silicones, and solvent-based products. Hence</span>, many pieces of literature which deal with the synthesis, properties and applications of this Si<span>lane terminated polymers hybrid system exist. Silylated polyether (MS polymers) </span>and Silylated Polyurethane Polymers (SPUR) are the bases for nu<span>merous sealants, adhesives and coatings used worldwide. A hybrid system mixed with </span><span>organic-polyurethane proportion and inorganic-alkoxysilane proportion</span> <span>com</span>bines the benefits of conventional polyurethane and silicone-based products.<span> This article reviews the chemistry of MS polymers and SPUR and their</span> <span>ad</span><span>vantages and disadvantages in silyl terminated prepolymer-based adhesives</span>, sea<span>lants and coatings as well as provides information on different end applications.
文摘以不同官能度的组合聚醚和多亚甲基多苯基异氰酸酯(PAPI)为反应单体、氯化石蜡(CP52)为增塑剂、2,2′-双吗啉基二乙基醚(DMDEE)为催化剂和酮亚胺(ALT403)为潜固化剂,制备了一种强度高、发泡量大的OCF[单组分PU(聚氨酯)泡沫填缝剂],并探讨了聚醚多元醇、增塑剂、潜固化剂和催化剂等对OCF性能的影响。研究结果表明:当组合聚醚中m(聚醚三元醇MN1000)∶m(聚醚二元醇DL400)=50∶50、w(CP52)=25%、w(ALT403)=4%和w(DMDEE)=0.4%(均相对于OCF质量而言)时,OCF的综合性能相对最好(其拉伸强度为127.5 k Pa,有效发泡倍数为69.1),并且泡沫材料软韧、泡孔均匀。
