Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Cured track bed sinking repairing high-viscosity vibration attenuation polyurethane repairing material
The invention relates to a high-viscosity vibration attenuation polyurethane repairing material for sinking repairing of a polyurethane cured track bed of a high speed railway or a heavy haul railway. The high-viscosity vibration attenuation polyurethane repairing material consists of a component A and a component B which are mixed and stirred together mechanically, wherein the mass ratio of the component A to the component B is (1:0.9)-(1:1.5); the component A is a mixture of an HDI tripolymer and polymethylene polyphenyl isocyanate ester; the mass ratio of the HDI tripolymer to polymethylene polyphenyl isocyanate ester is (3:7)-(6:4); the content of -NCO is 27-29%; and the component B consists of polyhydric alcohol, a catalyst, a defoaming agent, a moisture scavenger, an anti-aging agent, a flame retardant and rubber granules. The high-viscosity vibration attenuation polyurethane repairing material is characterized in that the polyhydric alcohol is a mixture which consists of 6-functionality-degree mannitol poly(propylene oxide polyol) and 3-functionality-degree high molecular weight polyether polyol with the molecular weight of 12000. According to the polyurethane repairing material provided by the invention, the volume expansion ratio is 1-3%, the compressive strength of 1 hour is greater than or equal to 12MPa, the adhesion strength is greater than or equal to 6MPa, the damping factor is 0.25-0.40, the accumulated residual deformation is less than or equal to 0.5% after 5 million times of fatigue loading, and the polyurethane repairing material can be applied to polyurethane cured track bed sinking repairing and railway ballast cured track bed sinking repairing as well.
Cured track bed sinking repairing high-viscosity vibration attenuation polyurethane repairing material
The invention relates to a high-viscosity vibration attenuation polyurethane repairing material for sinking repairing of a polyurethane cured track bed of a high speed railway or a heavy haul railway. The high-viscosity vibration attenuation polyurethane repairing material consists of a component A and a component B which are mixed and stirred together mechanically, wherein the mass ratio of the component A to the component B is (1:0.9)-(1:1.5); the component A is a mixture of an HDI tripolymer and polymethylene polyphenyl isocyanate ester; the mass ratio of the HDI tripolymer to polymethylene polyphenyl isocyanate ester is (3:7)-(6:4); the content of -NCO is 27-29%; and the component B consists of polyhydric alcohol, a catalyst, a defoaming agent, a moisture scavenger, an anti-aging agent, a flame retardant and rubber granules. The high-viscosity vibration attenuation polyurethane repairing material is characterized in that the polyhydric alcohol is a mixture which consists of 6-functionality-degree mannitol poly(propylene oxide polyol) and 3-functionality-degree high molecular weight polyether polyol with the molecular weight of 12000. According to the polyurethane repairing material provided by the invention, the volume expansion ratio is 1-3%, the compressive strength of 1 hour is greater than or equal to 12MPa, the adhesion strength is greater than or equal to 6MPa, the damping factor is 0.25-0.40, the accumulated residual deformation is less than or equal to 0.5% after 5 million times of fatigue loading, and the polyurethane repairing material can be applied to polyurethane cured track bed sinking repairing and railway ballast cured track bed sinking repairing as well.
Cured track bed sinking repairing high-viscosity vibration attenuation polyurethane repairing material
XIE YONGJIANG (Autor:in) / LI SHUMING (Autor:in) / ZHENG XINGUO (Autor:in) / ZENG ZHI (Autor:in) / LIU JING (Autor:in) / WENG ZHICAI (Autor:in) / WANG YUEHUA (Autor:in) / ZHANG WEN (Autor:in) / YANG DEJUN (Autor:in) / LIU XIANGHUI (Autor:in)
20.01.2016
Patent
Elektronische Ressource
Englisch
IPC:
C08L
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
,
Massen auf Basis makromolekularer Verbindungen
/
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
/
C08K
Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe
,
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS
/
E01B
PERMANENT WAY
,
Gleisoberbau
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