Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-toughness epoxy flexibilizer for roads and bridges as well as preparation method and use method of high-toughness epoxy flexibilizer
The invention provides a road and bridge high-toughness epoxy flexibilizer, a preparation method and a use method thereof. The road and bridge high-toughness epoxy flexibilizer comprises a monohydroxy epoxy-terminated polyurethane prepolymer and a phenol-terminated polyurethane prepolymer in a mass ratio of 100: (50-200). The simultaneous existence of the monohydroxyl epoxy terminated polyurethane prepolymer and the phenol terminated polyurethane prepolymer ensures that the road and bridge high-toughness epoxy forms an interpenetrating network structure in the curing process, a cured product has the properties of high-temperature rut resistance, medium-temperature fatigue resistance, low-temperature crack resistance and the like, and the problems that an epoxy mixture is insufficient in toughness and poor in fatigue resistance are perfectly solved. The technical defects that the isocyanate-terminated polyurethane prepolymer is too high in activity, poor in storage stability and the like are ingeniously overcome by temporarily closing the isocyanate-terminated polyurethane prepolymer through the phenolic hydroxyl group, and the technical requirements of road and bridge pavement on construction workability are met.
本发明提供路桥高韧环氧用增韧剂、制备方法及其使用方法，包括质量比为100:50~200的单羟基环氧封端聚氨酯预聚体和酚封端聚氨酯预聚体。单羟基环氧封端聚氨酯预聚体和酚封端聚氨酯预聚体的同时存在确保了路桥高韧环氧在固化过程中形成互穿网络结构，固化物兼具高温抗车辙、中温抗疲劳、低温抗裂等性能，完美解决了环氧混合料韧性不足、耐疲劳性能不佳的问题。利用酚羟基对端异氰酸酯基聚氨酯预聚体临时封闭巧妙解决了端异氰酸酯基聚氨酯预聚体活性过高、储存稳定性差等技术缺陷，满足了路桥铺装对施工和易性的技术要求。
High-toughness epoxy flexibilizer for roads and bridges as well as preparation method and use method of high-toughness epoxy flexibilizer
The invention provides a road and bridge high-toughness epoxy flexibilizer, a preparation method and a use method thereof. The road and bridge high-toughness epoxy flexibilizer comprises a monohydroxy epoxy-terminated polyurethane prepolymer and a phenol-terminated polyurethane prepolymer in a mass ratio of 100: (50-200). The simultaneous existence of the monohydroxyl epoxy terminated polyurethane prepolymer and the phenol terminated polyurethane prepolymer ensures that the road and bridge high-toughness epoxy forms an interpenetrating network structure in the curing process, a cured product has the properties of high-temperature rut resistance, medium-temperature fatigue resistance, low-temperature crack resistance and the like, and the problems that an epoxy mixture is insufficient in toughness and poor in fatigue resistance are perfectly solved. The technical defects that the isocyanate-terminated polyurethane prepolymer is too high in activity, poor in storage stability and the like are ingeniously overcome by temporarily closing the isocyanate-terminated polyurethane prepolymer through the phenolic hydroxyl group, and the technical requirements of road and bridge pavement on construction workability are met.
本发明提供路桥高韧环氧用增韧剂、制备方法及其使用方法，包括质量比为100:50~200的单羟基环氧封端聚氨酯预聚体和酚封端聚氨酯预聚体。单羟基环氧封端聚氨酯预聚体和酚封端聚氨酯预聚体的同时存在确保了路桥高韧环氧在固化过程中形成互穿网络结构，固化物兼具高温抗车辙、中温抗疲劳、低温抗裂等性能，完美解决了环氧混合料韧性不足、耐疲劳性能不佳的问题。利用酚羟基对端异氰酸酯基聚氨酯预聚体临时封闭巧妙解决了端异氰酸酯基聚氨酯预聚体活性过高、储存稳定性差等技术缺陷，满足了路桥铺装对施工和易性的技术要求。
High-toughness epoxy flexibilizer for roads and bridges as well as preparation method and use method of high-toughness epoxy flexibilizer
一种路桥高韧环氧用增韧剂、制备方法及其使用方法
CHEN LIFENG (Autor:in) / LI KUAN (Autor:in) / PAN YOUQIANG (Autor:in) / ZHANG ZHIXIANG (Autor:in) / LI SIQI (Autor:in) / YU JIADONG (Autor:in) / ZHAO SHIJIE (Autor:in)
10.10.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C08G
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
,
Makromolekulare Verbindungen, anders erhalten als durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind
/
C04B
Kalk
,
LIME
/
C09J
ADHESIVES
,
Klebstoffe
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