The invention relates to a weakening-free polyurethane composite material as well as a preparation method and application thereof. The weakening-free polyurethane composite material comprises a polyurethane surface layer, a polyurethane high-solid bonding layer and a base cloth layer which are sequentially arranged from top to bottom, wherein the polyurethane high-solid bonding layer is prepared from a polyurethane high-solid bonding layer slurry, and the polyurethane high-solid bonding layer slurry is prepared from the following components in parts by mass: 100 parts of a reactive polyurethane prepolymer, 5 to 10 parts of a cross-linking agent, 20 to 50 parts of a filler and 5 to 10 parts of color paste. According to the polyurethane high-solid bonding layer disclosed by the invention, the reaction type polyurethane prepolymer, the cross-linking agent and the filler react according to a certain proportion to form a three-dimensional network cross-linked structure, so that a leather film has certain strength and brittleness, and the weakening-free polyurethane composite material can generate overall brittle fracture under the impact of ignition force; and safe unfolding of the air bag is ensured.
本发明涉及一种免弱化聚氨酯复合材料及其制备方法和应用,所述免弱化聚氨酯复合材料包括从上到下依次布置的聚氨酯面层、聚氨酯高固粘接层、基布层;其中,所述聚氨酯高固粘接层由聚氨酯高固粘接层浆料制备而成,所述聚氨酯高固粘接层浆料由以下质量份的组分制备而成:反应型聚氨酯预聚体100份,交联剂5‑10份,填料20‑50份,色浆5‑10份。本发明的聚氨酯高固粘接层通过反应型聚氨酯预聚体与交联剂、填料按一定比例反应形成三维网状交联结构,使得皮膜具备一定的强度与脆性,从而实现免弱化聚氨酯复合材料在点爆力冲击下可发生整体脆性断裂,确保了气囊的安全展开。
Weakening-free polyurethane composite material as well as preparation method and application thereof
一种免弱化聚氨酯复合材料及其制备方法和应用
2025-02-28
Patent
Electronic Resource
Chinese
IPC: | B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM , Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / C09J ADHESIVES , Klebstoffe |
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