PPA Engineering Plastic (High Temperature Nylon) | Xiamen LFT body{ font-family: Arial, Helvetica, sans-serif; line-height:1.8; color:#111; max-width:1100px; margin:0 auto; padding:20px; } h1,h2,h3{color:#1f6f3f; margin-top:28px;} h1{font-size:28px;} h2{font-size:24px;} h3{font-size:20px;} p{font-size:16px; margin:10px 0;} ul{margin:10px 0 10px 20px;} .box{ background:#f5f7f5; border-left:4px solid #1f6f3f; padding:15px; margin:15px 0; } .img{ width:100%; max-width:700px; height:auto; display:block; margin:15px 0; } .highlight{color:#1f6f3f; font-weight:bold;} PPA (Polyphthalamide) Engineering Plastic PPA (Modified Polyphthalamide) is a high-performance semi-aromatic nylon with excellent heat resistance, mechanical strength, and chemical stability, widely used in demanding engineering applications. Material Overview PPA offers a heat deformation temperature above 300°C and continuous service temperature up to 170°C, making it suitable for high-temperature environments. It maintains excellent strength, stiffness, fatigue resistance, and creep resistance under high temperature and humidity conditions. Key Characteristics Excellent heat resistance (HDT > 300°C) High mechanical strength and stiffness Outstanding fatigue and creep resistance Good chemical resistance and crack resistance Stable performance under high humidity Excellent surface quality and appearance Short injection molding cycle time Performance Advantages Mechanical Performance High strength, hardness, and toughness allow PPA to replace metal in many applications. Thermal Stability Compared with PA46, PPA offers higher thermal stability and better long-term performance at elevated temperatures. Electrical & Arc Resistance Excellent CTI (comparative tracking index) and arc resistance make it suitable for electronic components. Chemical Resistance Strong resistance to oils, fuels, glycols, and many industrial chemicals. Processing Advantages Good flowability and short cycle time improve production efficiency in injection molding. Application Fields Automotive Industry Used in fuel systems, transmission systems, and engine components to reduce weight and extend service life. Electronics & Electrical Applied in connectors, sensors, switches, chip sockets, and high-density PCB components. Industrial Components Suitable for bearings, seals, compressor parts, and wear-resistant mechanical components. High-End Applications Used in coating, plating, and flame-retardant applications requiring high surface quality. Processing Guidelines Drying: Moisture content must be controlled below 0.1% before processing to avoid molecular degradation. Injection Temperature: 615–650°F (approx. 324–343°C) Mold Temperature: ≥275°F for optimal crystallization and dimensional stability Cycle Time: Short residence time (<10 minutes in barrel recommended) Product Features Available for injection molding applications Compatible with high-performance reinforced grades Supports surface finishing and plating grades Custom color and formulation available Supplier Information Xiamen LFT Composite Plastic Co., Ltd. Specialized in long fiber reinforced thermoplastics (LFT) including LGF and LCF modified engineering plastics. ISO9001 & IATF16949 certified Customized formulations available Strong R&D and in-house testing lab Global supply capability Professional technical support for injection molding