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Basic Parameters
PA66 EPR27LS 河南 Shenma nylon 高 performance engineering plastics
核心定位
PA66 EPR27LS is 河南 Shenma nylon 旗下 高 performance polyamide (PA) 66 Model ,以 “长链 toughened - weather resistant impact resistant ” is 核心 technology 特征,通过引入 C12~C18 脂肪族长链 binary 胺优化分子结构,并采用纳米 grade elastomer 分散 technology (粒径≤0.2μm)实现 performance 升 grade 。作 is medium viscosity injection molding grade resin ,其兼顾 high toughness and 环境耐久 property ,且采用无 halogen 环保配方,通过欧盟 RoHS 2.0 and REACH SVHC 241 项物质检测,适配新能源车、户外装备、工程机械等对韧 property and weather resistance has 双重要求 场景, is 复杂工况下结构件 优选 material material 。
基础属 property
material 质类别:未增强 modified polyamide (PA) 66(PA66),基体 is PA66 resin ,经长链 toughened and weather resistant modified 处理,属于 super tough weather resistant type engineering plastics ;
Model 标识含义:“EPR” 代表 super tough modified 系列,“27” is features 代码,“LS” 暗含低 shrinkage or weather resistant 增强属 property ,区别于普通韧 property PA66 Model , featuring 环境适应 property and molding 稳定 property ;
基础物理参数: density 1.12g/cm³(23℃),较常规 PA66 轻 3%;24 小时饱 and water absorption 2.8%,经 hydrolysis resistant modified 处理 improves 潮湿环境稳定 property ; melt flow rate 10.8g/10min(ISO1133),熔点 255℃, is medium viscosity injection molding 提供基础支撑。
核心 performance 优势
✅ mechanical properties : super tough features 贯穿宽温域
依托分子结构设计 and elastomer modified ,该 material material 展现出 excellent 韧 property 表现:23℃下简支梁 notched impact strength 达 85kJ/m²,即使 in -40℃低温环境 in , impact 强 degree 仍能保持 55kJ/m²,保持率 ultra- 65%,远 ultra- 普通 PA66 低温脆 property 局限。同时具备均衡 强 degree and 延展 property , tensile strength 72MPa,断裂延伸率 ultra- 200%, flexural modulus 2100MPa(RH60% 环境), in 承受 impact 载荷时不易 cracking ,且能通过形变吸收能量,适配高频振动 and 低温工况。
✅ 环境耐久 property : weather resistant 抗腐双达标
weather resistance 能:经 ISO 4892-3 标准 1500 小时紫外老化测试, Color Difference ΔE<1.5,达到 AA grade 标准,无明显泛黄、龟裂;通过 10 年户外使用模拟认证(Q/SM 608-2024),可满足户外部件长期使用需求;
抗腐蚀 and 耐温循环:1000 小时盐雾测试后强 degree 保持率 ultra- 90%,无表面腐蚀现象; in -40℃~135℃区间完成 1000 次冷热循环后无 cracking ,符合 GMW14872 标准,适配 extreme 端气候 and 腐蚀环境。
✅ heat stabilized performance :适配 in 温工况
material material 熔点稳定 in 255℃左右,0.45MPa 载荷下 heat deflection temperature (HDT) 达 195℃,1.82MPa 载荷下 is 68℃,长期使用 temperature 范围覆盖 -40℃至 120℃,短期可耐受 135℃高温。 in 新能源车电池包、发动机周边等 in 温场景 in ,能保持结构稳定,无明显软化 or performance 衰减,且结晶 performance 经优化, molding 后尺寸不易因 temperature 波动 occurrence 形变。
✅ processing properties : medium viscosity 适配高效 molding
medium viscosity melt flow property 均衡,适配薄 wall 件快速充模,宽 processing 窗口 reduces process 控制难 degree ;采用 Shenma 专利“三 grade 真空脱挥 process ”,残留单体 content ≤0.3%,减少银纹、 bubbles 等缺陷;具备优 good 电气绝缘 property ,体积电阻率 1.3×10¹⁴Ω・cm,介电强 degree 17.3kV/mm。
typical applications 场景
processing process 规范
干燥处理:未开封可直接使用;开封后 85℃热风干燥 4-6 小时,高湿环境需 105℃真空干燥 12 小时,含水率≤0.15%
material 筒 temperature :260-290℃,严禁 ultra- 过 300℃防止分解
mold temperature :建议 80℃,薄 wall 件需退火稳定尺寸
injection pressure :750-1250bar,高速填充 improves 效率
螺杆建议:压缩比 2.6-2.8 开放式螺杆,防止剪切过热
本文档 is PA66 EPR27LS 官方 grade 产品介绍,仅供选 type and process 参考
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