Overview
Insulated modified plastic is a polymer composite tailored for electrical insulation. It combines base plastics like PVC, polyethylene, or nylon with additives (e.g., ceramic fillers, flame retardants) to achieve superior dielectric properties. These materials are critical in industries where electrical safety and performance are paramount, such as power distribution and consumer electronics. Unlike standard plastics, insulated variants undergo rigorous testing for dielectric strength (often >20 kV/mm) and comparative tracking index (CTI) to prevent electrical arcing. Manufacturers may customize formulations to meet specific regulatory standards like UL 94 for flammability or IEC 60243 for insulation testing.
Physical and Chemical Properties
The material’s insulation performance stems from its low electrical conductivity and high resistivity (>10¹⁵ Ω·cm). Common base polymers include polypropylene (PP) for cost-effectiveness or polyetherimide (PEI) for high-temperature stability. Additives like alumina or silica enhance thermal conductivity while maintaining dielectric properties. Mechanically, these plastics exhibit tensile strengths of 30–80 MPa and can withstand prolonged exposure to 80–150°C. Chemical resistance varies by formulation, but most resist acids, alkalis, and oils. UV stabilizers may be added for outdoor applications to prevent degradation.
Main Applications
Primary use cases include insulating housings for switches, connectors, and circuit breakers, where failure risks must be minimized. In automotive sectors, they shield high-voltage components in electric vehicles (EVs). The construction industry employs them in conduit pipes and junction boxes. Emerging applications include 5G infrastructure due to the material’s low signal loss at high frequencies. Medical device manufacturers also utilize sterilizable grades for imaging equipment enclosures. Custom colors or textures can be integrated for aesthetic or branding purposes without compromising functionality.
Safety and Storage
While generally safe, processing at high temperatures may release fumes requiring ventilation. Dust control measures are advised during machining. Storage should prioritize moisture prevention—some grades absorb water, reducing dielectric performance. Sealed containers with desiccants are recommended for long-term storage. Regulatory compliance is essential. For instance, EU RoHS and REACH restrict certain additives (e.g., halogenated flame retardants). Certifications like UL or CSA markings are often mandatory for commercial sales, ensuring adherence to international safety benchmarks.
B2B Procurement Guide
Buyers should specify key parameters: dielectric strength (e.g., >15 kV/mm), CTI rating (Class I or II), and flame retardancy class (e.g., UL 94 V-0). Volume discounts are common for orders exceeding 1 ton, with lead times of 2–6 weeks for custom formulations. Supplier audits are advisable to verify testing capabilities and quality control processes. Sample testing under real operating conditions (e.g., thermal cycling) helps avoid compatibility issues. Consider regional logistics—some formulations may require climate-controlled transport to prevent moisture absorption.
Related Manufacturers
- 主营：POM、PA66、PPO、PC、PPS、PBT、PP、PET、TPU、EVA、ABS、LCP、PA6、PC+ABS、PMMA
- 主营：填充料、仪器箱、料颗粒、塑料袋、塑料桶、塑料筐、塑料颗、塑料盒、塑料配件、吸收剂、灰色abs、碳纤维、爽滑剂、农机具、树脂瓦、无纺布、聚乙烯、排水管、制作灯罩、注塑颗粒、抗静电剂、家具管材、电线电缆、环保颗粒、家用电源
- 主营：ADMER三井粘合树脂、Nucre粘合树脂、接枝GMA、Elvaloy改性树脂、马来酸酐接枝、PP马来酸酐接枝、PE接枝马来酸酐、Surlyn沙林树脂
- 主营：PA66、POM、PA6、改性尼龙塑料、TPU
- 主营：工程塑料、热稳定尼龙树脂
- 主营：水溶性炭黑、高色素炭黑、导电炭黑、绝缘炭黑、防静电塑料板用炭黑、氧化铁用水溶性炭黑、中色素炭黑、低色素炭黑、混气法炭黑、氧化炭黑、勾缝美缝专用炭黑、水性油墨专用炭黑、油墨专用炭黑、乙炔炭黑、油炉法炭黑、水泥填缝水溶性炭黑、电池专用导电炭黑、炭黑326、纸板浆料用水溶性炭黑、固化地坪用水溶性炭黑、炭黑330、发泡色母粒用炭黑、油墨用色素炭黑、涂料用色素炭黑、特黑
- 主营：美国杜邦、PBT、德国巴斯夫、塑料原料、工程塑料、德国朗盛、PA66、PC+ABS、PET、韩国LG、日本旭化成、PC、尼龙PA、POM、PPO、PPS、奇美abs、PA6、TPU、POM100p、POM500p、pom900p、pc1100、pc/abs、日本宝理pom
- 主营：PA6、POM、PC/ABS、塑料颗粒、日本宝理pps、PBT、Pom100p、Pom500p、Pom900p、M90-44、F20-03、ABS747、abs757、美国杜邦、德国巴斯夫、日本宝理pom、ASA、PMMA、PEEK、PCTG、PPA、PPSU、PVDF、POE、乐天PC-1100
- 主营：电缆料、护套料、低烟无卤聚烯烃电缆料、绝缘耐寒料、PVC绝缘料、改性塑料、低烟无卤电缆塑料颗粒、丁硅电缆绝缘料、医院用拉管塑料颗粒、丁腈复合物、丁腈电缆料、丁硅电缆料、NBR丁腈粉末、90度电缆料、PVC电缆料、紫外光辐照交联低烟无卤电缆料、耐油低烟无卤电缆料、工业丁硅电缆专用料、丁硅复合物电缆料、哑光弹性体电缆料、哑光电缆料、哑光电线电缆料、哑光pvc电缆料、pvc哑光料、丁晴pvc电缆料
- 主营：LCP、PA66、PSU、超耐磨塑料、TPEE、PEEK、PA12、PBT/ASA、PPSU、PPS、PC、PC/ABS、ABS、润滑脂、PTFE、特富龙
- 主营：316L金属缠绕垫、316金属缠绕垫、石墨盘根环、高温垫片法兰垫、椭圆垫、八角垫片、四氟制品、石棉橡胶系列、盘根系列、垫片系列、聚乙烯四氟板、四氟弹性带、金属缠绕垫、内外环型缠绕垫片、四氟垫片、椭圆垫片、金属圆形垫片、304金属缠绕垫、304椭圆垫、316椭圆垫、A型金属缠绕垫片、B型金属缠绕垫片、C型金属缠绕垫片、D型金属缠绕垫片
- 主营：电子电器胶、工业硅酮胶、耐高温密封胶、卡夫特绝缘胶、厌氧胶、工业密封胶、工业高温胶、导热硅脂、导热硅胶、汽车密封胶、平面密封胶、平面厌氧胶、紫外光固化胶、灯具胶、聚氨酯胶水、耐黄变胶水、汽车免垫胶、耐油密封胶、密封胶代工
- 主营：Pom美国杜邦、日本宝理pom、旭化成pom、本色PA66塑料、Pom100p、Pom500p、Pom900p、M90-44、F20-03、ABS747、abs757、LCP、PA6T、PA9T、POE、PBT、PVDF、PETG、COC、HIPS、TPEE、TPU、TPV、日本旭化成pom、美国杜邦pom
- 主营：叔碳酸、十八醛、溶菌酶、海藻糖、癸二醇、氨基丙基、氢路噻嗪、邻苯二甲、乙基碳二、羟基癸酸、正十七烷、谷胱甘肽、烷二甲醇、松果体素、vc磷酸酯镁、2-甲基丁醛、朱栾倍半萜、丁烷四乙酸、表面活性剂、癸烷撑二醇、缩水甘油邻、10-羟基羊蜡酸、氢氯噻嗪杂质、盐酸邻菲罗啉、壳聚糖季铵盐
- 主营：生物质颗粒、防火涂料、膨润土、云母粉、蛭石、石英砂、碳酸钙、高岭土、重钙、1250目云母粉、萤石粉、莫来砂、铁砂、火山石、夜光石