An embodiment relates a microcellular foaming polyurethane elastomer for jounce bumpers and a method for preparing the same. The microcellular foaming polyurethane elastomer for jounce bumpers according to the embodiment has, because of a microcellular structure obtained through foaming using a prepolymer and a main ingredient, durability that can withstand repeated compressions during driving of an automobile and, in particular, exhibits a low height change rate and has excellent properties such as tensile strength, elongation, compression set, etc. even after repeated compressions, and thus can be usefully used for jounce bumpers. Also, according to the method for preparing a microcellular foaming polyurethane elastomer for jounce bumpers according to the embodiment, when preparing a prepolymer, the viscosity of the prepolymer is improved by reacting at a certain ratio: 4,4'-diphenylmethane diisocyanate; poly(oxytetramethylene) glycol or poly(caprolactone) glycol; and α-hydro-ω-hydroxypoly(oxypropylene) or α-hydro-ω-hydroxypoly(oxypropylene-co-oxyethylene), and thus the raw material can be handled easily, the storage stability of the prepolymer can be improved, and the height change rate of the elastomer can be maintained at 10% or less.
MICROCELLULAR FOAMING POLYURETHANE ELASTOMER FOR JOUNCE BUMPERS AND METHOD FOR PREPARING SAME
MIKROZELLULÄRES SCHÄUMENDES POLYURETHANELASTOMER FÜR ANSCHLAGPUFFER UND VERFAHREN ZUR HERSTELLUNG DAVON
ÉLASTOMÈRE EN POLYURÉTHANE EN MOUSSE MICROCELLULAIRE POUR BUTÉE DE CHOC ET SON PROCÉDÉ DE PRÉPARATION
2020-12-02
Patent
Electronic Resource
English
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 / B60G VEHICLE SUSPENSION ARRANGEMENTS , Radaufhängungen und Federungen für Fahrzeuge / C08J Verarbeitung , WORKING-UP |
MICROCELLULAR FOAMING POLYURETHANE ELASTOMER FOR JOUNCE BUMPERS AND METHOD FOR PREPARING SAME
European Patent Office | 2018
|Dynamic Characterization of Microcellular Urethane Jounce Bumpers Under Impact Conditions
SAE Technical Papers | 1999
|Dynamic Characterization of Microcellular Urethane Jounce Bumpers under Impact Conditions
British Library Conference Proceedings | 1999
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