Overview
Large-diameter blended polyethylene is a versatile engineering plastic composed of polyethylene (PE) resins modified with additives or other polymers to enhance specific properties. It is designed for applications requiring durability, corrosion resistance, and flexibility, particularly in piping systems with diameters exceeding 300 mm. The material is favored in industries like water management, mining, and agriculture due to its ability to withstand high pressures and abrasive environments. Blends often incorporate high-density polyethylene (HDPE) with linear low-density polyethylene (LLDPE) or stabilizers to optimize performance for specific use cases.
Physical and Chemical Properties
The material exhibits high tensile strength (20–30 MPa) and elongation at break (500–700%), making it resistant to cracking under stress. Its density and melt flow index (MFI) vary depending on the blend composition, which can be tailored for extrusion or injection molding processes. Chemically, blended PE is inert to most acids, alkalis, and salts, though prolonged exposure to strong oxidizers like nitric acid should be avoided. UV resistance is achieved through carbon black or stabilizer additives, critical for outdoor applications.
Main Applications
Primary uses include large-diameter pipes for municipal water supply, gas distribution networks, and industrial effluent systems. Its smooth inner surface minimizes friction losses, while joint flexibility reduces installation costs compared to rigid materials like concrete or steel. In mining, blended PE pipes transport slurries and tailings, leveraging abrasion resistance. Agricultural applications include drip irrigation and drainage systems, where its lightweight nature simplifies handling in remote areas.
Safety and Storage
While polyethylene is generally safe, processing at high temperatures (e.g., welding) may release volatile compounds; adequate ventilation is essential. Storage should avoid extreme heat (>50°C) to prevent deformation and oxidative degradation. Bulk pellets or granules are typically packaged in moisture-proof bags or silos. Fire hazards are low, but combustion produces dense smoke; halogen-free flame retardants are added for high-risk environments.
B2B Procurement Guide
Buyers should prioritize suppliers with ISO 4427 or ASTM D3350 certifications for pipe-grade PE. Key specifications include nominal diameter (DN), pressure rating (PN), and whether the blend is optimized for crack resistance (e.g., PE100-RC). Procurement contracts often include clauses for batch testing of melt index and density. For large projects, consider regional availability of raw materials to reduce logistics costs. Pricing fluctuates with crude oil trends, so long-term agreements may include price adjustment mechanisms.
Related Manufacturers
- 主营：路基板、保护垫、耐磨衬板、聚乙烯衬板、临时铺路板、临时垫道板、防滑路基垫板
- 主营：低密度聚乙烯、土工膜、土工布
- 主营：博禄PP、FORTRON、PPS、日本大科能宇菱通、日本可乐丽、韩国乐金LG化学、ABS、PC、沙特沙伯基础、PC 日本帝人、PP 韩国韩华道达尔、沙特基础GE、韩国锦湖、PC 韩国LG、宝理POM、LG工程塑料、日本宝理POM、韩国工程塑料、韩国SK综合化学、韩国乐天尖端三星毛织、德国罗姆赢创德固赛、德国科思创原拜耳、台塑 PP、日本三菱工程
- 主营：pom、杜邦pom、宝理pom、旭化成pom、巴斯夫、pom100p、聚甲醛共聚物、赛钢聚甲醛原料、pom500p、pom900p、奇美abs、浙石化、中石化、pvdf、PCTG、PARA、沙伯基础、pmma、pps、日本东丽pa66、云天化、科思创TPU、陶氏POE、埃克森美孚POE、美国苏威
- 主营：镜片料、聚苯砜、聚丙烯、聚甲醛、PA66、PA6、PPS、PBT、POM100p、Pom500p、Pom900p、M90-44、F20-03、pa9t、TPU、PPSU、PEEK、PVDF、PPA、PMMA、HIPS、LDPE、HDPE、赛刚pom
- 主营：POM 100P、PA66杜邦系列、POM 500P 杜邦、PC 2805科思创、PA66旭化成、沙比克pmmap20mh、Hips、PMMA、PMMA 20HR、Tpu、Pa46、Pa66、Hdpe、Ldpe、Poe、Eva、Lcp、Pbt、PP、Abs、Asa、Pctg、Para、PEEK
- 主营：PPS塑料、LCP塑料、POM塑料、PC塑料、PCTG塑料
- 主营：F20-03、m90-44、m90-45、PC-1100、pom100p、pom500p、pom900p、云天化pom、宝理pom、旭化成pom、杜邦pom、巴斯夫pa66、杜邦pa66、聚甲醛原料、聚丙烯pp、埃克森美孚POE、美国苏威PPSU、科思创PC、沙伯基础PC、李长荣聚丙烯、路博润TPU、埃克森ldpe、巴塞尔ldpe、韩华ldpe、日本三菱pom
- 主营：SBS防水卷材、防水卷材、PVC防水卷材、氯化聚乙烯防水卷材、TPO防水卷材、三元乙丙防水卷材、丁基防水胶带、彩色k11防水涂料、APP防水卷材、屋面防水涂料、防水防腐涂料、水性防水涂料、高分子自粘胶膜防水卷
- 主营：聚烯烃、机械仪器、工业壳体、升级透明聚丙烯
- 主营：SBS防水卷材、PVC防水卷材、TPO防水卷材、聚乙烯胎防水卷材、高分子自粘胶膜防水卷材、自粘防水卷材、聚氨酯防水涂料、液体卷材、耐根穿刺防水卷材、高分子自粘防水卷材、聚氯乙烯PVC防水卷材、SBS改性沥青防水卷材、耐根穿刺SBS防水卷材、非固化橡胶沥青防水涂料、高聚物改性沥青防水涂料、JS聚合物水泥防水涂料、氰凝防水防腐涂料、水泥基渗透结晶防水涂料、三元乙丙防水卷材、环氧沥青防腐漆、防水防腐涂料、阻燃玛蹄脂、阻燃聚氨酯防水卷材、防火防潮材料、聚氯乙烯PVC材料
- 主营：tpu、Eva、Pom、Pa66、Lcp、Pa6t、Pa9t、Pa6、Poe、Hdpe、Ldpe、Lldpe、Pc、Hips、Pbt、Pctg、Pc/abs、Abs、pp、Ppsu、Pps、Para、Tpee、Pa612、Pa12
- 主营：POM、PA66、PC、Pom100p、Pom500p、Pom900p、Pom100t、M90-44、F20-03、ABS747、abs757、TPU、美国杜邦pom、日本旭化成pom、日本宝理pom、ASA、COC、PEEK、PVDF、PCTG、PCTA、PA612、Pa6t、Pa9t
- 主营：EPS粒子、相容剂、增韧剂、液体橡胶、粉末丁腈橡胶、功能助剂、工程塑料、部分通用塑料
- 主营：SBS防水卷材、聚氨酯防水涂料、PVC防水卷材、聚乙烯胎防水卷材、TPO防水卷材、高分子自粘胶膜防水卷材、耐根穿刺防水卷材、自粘防水卷材、高分子自粘防水卷材、三元乙丙防水卷材、液体卷材、非固化橡胶沥青防水涂料、JS聚合物水泥防水涂料、强力交叉膜防水卷材、湿铺防水卷材、SBS改性沥青防水卷材、耐根穿刺PVC防水卷材、耐根穿刺SBS防水卷材、预铺防水卷材、道路灌缝胶、聚氨酯防水卷材、APP防水卷材、聚脲、水泥基渗透结防水涂料
- 主营：sbs改性沥青防水卷材、自粘防水卷材、防水涂料、聚乙烯丙纶、聚乙烯涤纶防水卷材、三元乙丙橡胶防水卷材、pvc防水卷材、tpo防水卷材、隧道防水卷材、橡胶防水卷材、橡胶淘金管、土工格栅、pvc自粘防水卷材、土工布、土工膜、聚氨酯防水涂料、防草布、js k11防水涂料、非固化防水涂料、水泥防水毯、水泥基渗透结晶防水涂料、hdpe epdm自粘防水卷材、耐磨橡胶管、三元乙丙防水卷材、自粘聚合物防水卷材
- 主营：氯化聚乙烯