A modified polypropylene resin, an intercalated melt-blown sound-absorbing cotton and a preparation method and application thereof
CN118725449BActive Publication Date: 2026-08-28KINGFA SCI & TECH CO LTD +1
Patent Information
- Application Number
- CN202310322237.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-03-29
- Publication Date
- 2026-08-28
- Estimated Expiration
- 2043-03-29
AI Technical Summary
Technical Problem
[0004]然而，普通的PP/PET双组分吸音棉在高温条件下容易发生热老化，导致其力学性能、吸音性能降低，一般而言，经过500h的高温热氧老化测试后，吸音棉就会出现表面发黄，材料粉化等问题，难以满足作为汽车内饰功能性材料的长期应用需求
Benefits of technology
[0036]本发明所述插层熔喷吸音棉结构稳定性高，可有效在高温环境下抵御外界的氧自由基或过氧自由基的侵袭，抑制自身的降解反应，在热加工及热环境使用过程中不会发生发黄、分化现象，使用性能保持率高，可充分发挥吸音棉产品的吸音性能，尤其适用于对于力学、外观、吸音以及耐热老化性能均有较高要求的汽车内饰功能材料中。
✦ Generated by Eureka AI based on patent content.
Smart Images
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Abstract
The application discloses a modified polypropylene resin, an intercalated melt-blown sound-absorbing cotton and a preparation method and application thereof, and belongs to the technical field of high polymer materials. A special antioxidant system is introduced into the components of the modified polypropylene resin to implement modification, and the heat aging effect of the obtained intercalated melt-blown sound-absorbing cotton product is obviously improved in the production, processing, storage and use processes, the intercalated melt-blown sound-absorbing cotton product can be kept from breaking or yellowing for more than 3000 hours under the environment of 120 DEG C, and meanwhile, the intercalated melt-blown sound-absorbing cotton product has good compression recovery performance retention rate, and the service performance is not affected.
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Citation Information
Patent Citations
Sound-absorbing cotton material and preparation method thereof
CN107778655A