Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention discloses a damping type high-bearing-capacity polyurethane elastomer material. The material is characterized by comprising the following components in parts by mass: 70-85 parts of polytetramethylene ether glycol (PTMEG), 10-25 parts of toluene diisocynate (TDI), 30-40 parts of small-molecular-weight polyether prepolymer and 15-25 parts of 3,3'-dichloro-4,4'-diaminodiphenyl methane(MOCA). According to the prepared polyurethane elastomer material, TDI and MOCA are used as hard segments, and the small-molecular-weight polyether prepolymer is copolymerized into the polyurethane hard segments through block copolymerization; the small-molecular-weight polyether prepolymer contains polar hydroxyl groups, so the peel strength of the material and metal can be improved, the overallcoordination of a support is guaranteed, and meanwhile, a large hard chain micro-area can be divided into several small micro-areas so as to improve the tensile deformation rate of the polyurethane elastomer material; and the ultimate tensile strain of the polyurethane elastomer material is larger than or equal to 500%, and the ultimate shearing strain of the polyurethane elastomer material is larger than or equal to 500%, so the manufactured support has a high damping ratio reaching 14%-18% and excellent energy dissipation capacity, and the bearing capacity of the support reaches 2-3 times the bearing capacity of a rubber support.
本发明公开了一种阻尼型高承载力聚氨酯弹性体材料，其特征在于，包括以下质量份比的组分：聚四亚甲基醚二醇(PTMEG)70～85份、甲苯二异氰酸酯(TDI)10～25份、小分子量聚醚预聚体30～40份、3,3'‑二氯‑4,4'‑二氨基二苯基甲烷(MOCA)15～25份；本发明制得的聚氨酯弹性体材料使用TDI和MOCA作为硬段，通过嵌段共聚，将小分子量聚醚预聚体共聚到聚氨酯硬段中，该小分子量聚醚预聚体含有极性羟基，可提高材料与金属剥离强度，保证支座的整体协调性，同时还可将大的硬链微区分成几个小微区，提高了聚氨酯弹性体的拉伸变形率，其极限拉伸应变≥500％，极限剪切应变≥500％，使得制成的支座具有高阻尼比，达14％～18％，有优异的耗能能力，承载力达到橡胶支座承载能力2～3倍。
The invention discloses a damping type high-bearing-capacity polyurethane elastomer material. The material is characterized by comprising the following components in parts by mass: 70-85 parts of polytetramethylene ether glycol (PTMEG), 10-25 parts of toluene diisocynate (TDI), 30-40 parts of small-molecular-weight polyether prepolymer and 15-25 parts of 3,3'-dichloro-4,4'-diaminodiphenyl methane(MOCA). According to the prepared polyurethane elastomer material, TDI and MOCA are used as hard segments, and the small-molecular-weight polyether prepolymer is copolymerized into the polyurethane hard segments through block copolymerization; the small-molecular-weight polyether prepolymer contains polar hydroxyl groups, so the peel strength of the material and metal can be improved, the overallcoordination of a support is guaranteed, and meanwhile, a large hard chain micro-area can be divided into several small micro-areas so as to improve the tensile deformation rate of the polyurethane elastomer material; and the ultimate tensile strain of the polyurethane elastomer material is larger than or equal to 500%, and the ultimate shearing strain of the polyurethane elastomer material is larger than or equal to 500%, so the manufactured support has a high damping ratio reaching 14%-18% and excellent energy dissipation capacity, and the bearing capacity of the support reaches 2-3 times the bearing capacity of a rubber support.
本发明公开了一种阻尼型高承载力聚氨酯弹性体材料，其特征在于，包括以下质量份比的组分：聚四亚甲基醚二醇(PTMEG)70～85份、甲苯二异氰酸酯(TDI)10～25份、小分子量聚醚预聚体30～40份、3,3'‑二氯‑4,4'‑二氨基二苯基甲烷(MOCA)15～25份；本发明制得的聚氨酯弹性体材料使用TDI和MOCA作为硬段，通过嵌段共聚，将小分子量聚醚预聚体共聚到聚氨酯硬段中，该小分子量聚醚预聚体含有极性羟基，可提高材料与金属剥离强度，保证支座的整体协调性，同时还可将大的硬链微区分成几个小微区，提高了聚氨酯弹性体的拉伸变形率，其极限拉伸应变≥500％，极限剪切应变≥500％，使得制成的支座具有高阻尼比，达14％～18％，有优异的耗能能力，承载力达到橡胶支座承载能力2～3倍。
Damping type high-bearing-capacity polyurethane elastomer material as well as preparation method and application thereof
一种阻尼型高承载力聚氨酯弹性体材料及制备方法和用途
YUAN YONG (Autor:in)
17.11.2020
Patent
Elektronische Ressource
Chinesisch
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