The invention relates to the technical field of automobile interior and exterior composite material preparation, in particular to a full-structure recyclable polyethylene glycol terephthalate filament felt and a preparation method and application thereof. The method comprises the following steps: spinning by taking low-melting-point modified PET as a skin layer and unmodified PET as a core layer to obtain a PET filament with a skin-core structure; carrying out web forming and heat treatment to obtain a PET long fiber web; needling the PET long fiber net to obtain a PET filament felt; the PET filament felt can be used for preparing an automobile interior and exterior composite material through a mold pressing process. The full-structure recoverable PET filament felt provided by the invention is remarkably improved in the aspects of preparation process and recoverability, and an automobile interior and exterior composite material prepared from the full-structure recoverable PET filament felt also has outstanding performance in the aspects of light weight, NVH (Noise Vibration and Harshness) resistance and cost effectiveness, so that the comprehensive performance of the automobile interior and exterior composite material is favorably improved.
本发明涉及汽车内外饰复合材料制备技术领域,特别是涉及一种全结构可回收聚对苯二甲酸乙二醇酯长丝毡及其制备方法和应用。以低熔点改性PET为皮层,未改性PET为芯层进行纺丝,得到具有皮芯结构的PET长丝;通过成网和热处理,得到PET长纤网;将PET长纤网进行针刺,得到PET长丝毡;PET长丝毡经过模压工艺可制备汽车内外饰复合材料。本发明提供的全结构可回收的PET长丝毡不仅在制备工艺和可回收性方面有显著提升,由其制备的汽车内外饰复合材料在轻量化、抗NVH性能和成本效益方面也有突出的表现,有助于实现汽车内外饰复合材料的综合性能提升。
Full-structure recyclable polyethylene glycol terephthalate filament felt as well as preparation method and application thereof
一种全结构可回收的聚对苯二甲酸乙二醇酯长丝毡及其制备方法和应用
2025-04-15
Patent
Electronic Resource
Chinese
IPC: | B29L INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES , Index-Schema für besondere Gegenstände in Verbindung mit Unterklasse B29C / B29C Formen oder Verbinden von Kunststoffen , SHAPING OR JOINING OF PLASTICS / D04H Herstellen von flächigem Textilgut, z.B. aus Fasern oder fadenförmigem Material , MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / D01F Chemische Gesichtspunkte bei der Herstellung von produzierten Filamenten, Zwirnen, Fasern, Borsten oder Bändern , CHEMICAL FEATURES IN THE MANUFACTURE OF MAN-MADE FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS |
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