Polypropylene fused aerogel high-resilience cloud wool and preparation method thereof

By combining nano-SiO2 aerogel powder modified with specific crosslinking agents and silane coupling agents in a polypropylene resin matrix with polyolefin elastomers, a highly elastic network is formed, which solves the problem of poor interfacial compatibility between aerogel and fiber matrix, achieving a synergistic effect of high resilience and excellent thermal insulation performance, and improving the fluffy and warm insulation performance of clothing fillings.

CN121575508APending Publication Date: 2026-02-27JIANGYIN QINGFENG CHEM FIBER CO LTD
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Patent Information

Application Number
CN202511920605.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-18
Publication Date
2026-02-27

AI Technical Summary

Technical Problem

In existing technologies, the poor interfacial compatibility between aerogel and fiber matrix leads to easy shedding and powdering of aerogel. Furthermore, the brittle outer aerogel layer increases the material density and hardens the feel, making it difficult to achieve an effective synergy between thermal insulation performance and high elasticity, and thus failing to meet the long-term requirements for fluffy warmth in clothing fillings.

Method used

A crosslinking agent composed of 3-mercaptopropionic acid-[2,4,6-trioxo-1,3,5-triazine-1,3,5(2H,4H,6H)-trimethyl]tri-2,1-ethylene glycol ester and triallyl isocyanurate is used, combined with hydrophobic nano-SiO2 aerogel powder modified with silane coupling agent and polyolefin elastomer, which is uniformly dispersed in a polypropylene resin matrix to form a highly elastic network, and the interfacial bonding is enhanced by KH-560 modification.

Benefits of technology

It achieves a synergistic effect of high resilience and excellent thermal insulation performance in composite cloud fleece materials, improves the mechanical strength and durability of the materials, solves the problems of aerogel shedding and density increase, and meets the long-term fluffy and warm requirements of clothing fillings.

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Abstract

The invention relates to polypropylene molten aerogel high-resilience cloud wool and a preparation method thereof.The polypropylene molten aerogel high-resilience cloud wool is prepared from, by weight, 75-85 parts of polypropylene resin matrix, 8-12 parts of hydrophobic nano SiO2 aerogel powder, 6-10 parts of polyolefin elastomer, 3-5 parts of compatibilizer, 0.5-0.9 part of foaming agent, 0.5-1.0 part of initiator, 0.3-0.6 part of cross-linking agent and 0.2-0.3 part of antioxidant. The surface of the hydrophobic nano SiO2 aerogel powder is modified by a silane coupling agent, and the cross-linking agent comprises 3-mercaptopropionic acid-[2, 4, 6-trioxo-1, 3, 5-triazine-1, 3, 5 (2H, 4H, 6H)-secondary group] tris (2, 1-glycol ester) and triallyl isocyanurate, and the surface of the hydrophobic nano SiO2 aerogel powder is modified by a silane coupling agent, and the cross-linking agent comprises 3-mercaptopropionic acid-[2, 4, 6-trioxo-1, 3, 5-triazine-1, 3, 5 (2H, 4H, 6H)-secondary group] tris (2, 1-glycol ester) and triallyl isocyanurate. According to the preparation method, a cross-linking agent compounded from 3-mercaptopropionic acid-[2, 4, 6-trioxo-1, 3, 5-triazine-1, 3, 5 (2H, 4H, 6H)-secondary] tris-2, 1-glycol ester and triallyl isocyanurate is adopted, and hydrophobic nano SiO2 aerogel powder with the surface modified by a silane coupling agent and a polyolefin elastomer are uniformly dispersed in a polypropylene resin matrix, so that the polypropylene composite material is prepared. And the composite cloud velvet material has high resilience and excellent heat preservation performance at the same time.
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