The invention relates to the technical field of sound-absorbing cotton, in particular to noise-reducing sound-absorbing cotton and a preparation method thereof.The preparation method comprises the following specific steps that PLA is put into a mixer to be melted, and then a surfactant, kieselguhr, a lubricant, a heat stabilizer and carbamide are sequentially added into the mixer; spinning the mixed melt through a nozzle, and weaving to form a noise-reducing sound-absorbing cotton layer; 6D low-melting-point fibers, hollow 7D long fibers and hollow 6D long fibers are weighed, pre-stirred and uniformly mixed to obtain mixed fibers, and then the mixed fibers are subjected to fluffy opening treatment; after the fluffy opening treatment is completed, lapping and overlapping are carried out, finally, the mixed fibers are heated by hot air, rolling is carried out after cooling, and the flame-retardant sound-absorbing cotton layer can be obtained; the upper surface of the noise-reducing sound-absorbing cotton layer is coated with an adhesive, and the flame-retardant sound-absorbing cotton layer and the noise-reducing sound-absorbing cotton layer are laminated and rolled to obtain the noise-reducing sound-absorbing cotton. Through the synergistic effect of the noise-reducing sound-absorbing cotton layer and the flame-retardant sound-absorbing cotton layer, the noise-reducing and flame-retardant effects can be achieved.
本发明涉及吸音棉技术领域,特别是一种降噪吸音棉及其制备方法,具体步骤如下:将PLA投入到混合器中进行熔融,然后依次将表面活性剂、硅藻土、份润滑剂、热稳定剂和碳酰胺加入混合器中;将混合熔融体通过喷嘴喷丝,编织制成降噪吸音棉层;将6D低熔点纤维、中空7D长纤维与中空6D长纤维称量并预搅拌混合均匀得到混合纤维,之后对其进行蓬松开松处理;蓬松开松处理完成后,进行铺网叠加,最后热风加热混合纤维,冷却后收卷,即可得阻燃吸音棉层;在降噪吸音棉层上表面涂附胶粘剂,将阻燃吸音棉层与降噪吸音棉层压合,收卷即得降噪吸音棉。本发明通过降噪吸音棉层与阻燃吸音棉层的协同作用可以既达到降噪又可以达到阻燃效果。
Noise-reducing sound-absorbing cotton and preparation method thereof
一种降噪吸音棉及其制备方法
2023-08-29
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 / D01D MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF MAN-MADE FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS , Mechanische Verfahren oder Vorrichtungen für die Herstellung von produzierten Filamenten, Zwirnen, Fasern, Borsten oder Bändern / 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 / D04H Herstellen von flächigem Textilgut, z.B. aus Fasern oder fadenförmigem Material , MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL |
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