Core Viewpoint - The report presented by Dr. Huang Jiaqi at the "2025 Advanced Nylon Industry Innovation and Application Development Conference" emphasizes the evolution of nylon materials in the context of the global automotive industry's transition towards electrification, lightweighting, and intelligence, providing a theoretical framework and practical guidance for collaborative innovation in the industry [2]. Group 1: Traditional Fuel Vehicle System Analysis - Nylon materials have significantly contributed to the lightweighting and cost optimization of internal combustion engine vehicles, with a 47% increase in penetration in engine subsystems from 2000 to 2020 [4]. - Specific applications include: - Intake Manifold: Glass fiber reinforced nylon 6/66 replaces aluminum alloy, achieving a lightweight rate of 60%-65% and reducing manufacturing costs by 30% through integrated injection molding [4]. - Fuel Lines: Multi-layer barrier nylon materials (PA12/PA6) exhibit a pressure resistance of 8MPa and outperform traditional rubber materials in fuel permeability by three orders of magnitude [4]. - Thermal Management Systems: High-temperature nylon (e.g., PA46) maintains over 85% creep strength retention under 120℃ cycling conditions [4]. Group 2: New Energy Vehicle Technology Requirements - A three-dimensional analysis model of "demand-performance-application" is constructed to address the technical characteristics of new energy vehicles [5]. - Key requirements include: - Lightweight Rigid Demand: Long glass fiber reinforced nylon for battery pack structural components must have a tensile strength of ≥150MPa and a density 40% lower than aluminum alloys [5]. - High-Pressure Electrical System Compatibility: Materials for 800V high-pressure platform connectors must withstand temperatures up to 180℃, with semi-aromatic nylon (PA9T/PA10T) maintaining volume resistivity >10^15 Ω·cm after 1000 hours of aging at 180℃ [7]. - Thermal Management Complexity: Thermal conductive nylon for battery liquid cooling plates improves heat exchange efficiency by 120% compared to traditional PP materials [8]. Group 3: Strategic Directions for Nylon Material Innovation - The strategic directions for nylon material innovation include: - High Performance: New technologies such as semi-solid batteries and 800V high-pressure platforms require nylon to possess higher heat resistance (over 150℃ for long-term use) and electrical breakdown resistance [9]. - Low Carbon: Bio-based nylon (e.g., PA56) and recycled nylon are becoming essential choices for manufacturers to reduce carbon footprints, aligning with EU "carbon tariff" policies [9]. - Customization: New energy vehicle companies are pursuing differentiation, driving the application of specialty materials like spray-free nylon and metallic-feel nylon in interior and exterior components [9]. Group 4: Conclusion - The technological revolution in new energy vehicles fundamentally represents a systematic reconstruction of material systems, with nylon materials evolving from "functional substitutes" to "technology definers," deeply integrating into vehicle engineering design logic [10]. - Industry participants must grasp the trends of high performance, low carbon, and integration to build a technology ecosystem based on scenario innovation, which will be crucial for seizing the high ground in next-generation automotive materials [10].