Overview
Linear polyethylene is a versatile thermoplastic derived from ethylene monomers through polymerization. Unlike branched polyethylene, its linear structure provides superior mechanical properties, making it a preferred material for high-performance applications. It is categorized into High-Density Polyethylene (HDPE) and Linear Low-Density Polyethylene (LLDPE), each with distinct characteristics. HDPE is known for its rigidity and resistance to chemicals, while LLDPE offers greater flexibility and impact strength. Both types are widely used in industries ranging from packaging to construction due to their durability and cost-effectiveness.
Physical and Chemical Properties
Linear polyethylene exhibits a semi-crystalline structure, contributing to its high tensile strength and resistance to abrasion. Its density ranges from 0.91 to 0.97 g/cm³, depending on the polymerization process. The material is chemically inert, resisting acids, alkalis, and most solvents, though it can swell in hydrocarbons. Thermal properties include a melting point of 120–140°C, but prolonged exposure to temperatures above 80°C may cause deformation. It is also UV-sensitive, requiring stabilizers for outdoor applications. The material’s low moisture absorption makes it ideal for waterproofing applications.
Main Applications
Linear polyethylene is a cornerstone of modern packaging, used for films, bottles, and containers due to its lightweight and barrier properties. In construction, HDPE pipes are favored for their corrosion resistance and long service life. LLDPE is often used for stretch films and industrial liners. The material also plays a critical role in agriculture (e.g., greenhouse films) and environmental engineering (e.g., geomembranes for landfills). Its versatility extends to consumer goods like toys and household items, where safety and durability are paramount.
Safety and Storage
While linear polyethylene is generally safe, precautions are necessary during processing. Overheating can release volatile organic compounds (VOCs), requiring adequate ventilation. Dust from granules may pose a respiratory hazard, so protective equipment is recommended. Storage should be in a dry, cool environment away from direct sunlight to prevent degradation. Avoid contact with strong oxidizers, which can compromise the material’s integrity. Bulk storage in sealed containers is advised to maintain quality.
B2B Procurement Guide
When sourcing linear polyethylene, prioritize suppliers with certifications like ISO 9001 to ensure quality consistency. Key specifications to verify include melt flow index (MFI), density, and additive content (e.g., UV stabilizers). Prices fluctuate based on crude oil trends and demand, so long-term contracts may offer stability. Sample testing is recommended to confirm performance in specific applications. For large orders, inquire about bulk discounts and logistics support to optimize costs.
Related Manufacturers
- 主营：尼龙滑块、尼龙齿轮滑轮、实验室小推车、超高分子量聚乙烯板加工、抗冲击滑块、酸碱池、pe板、路基板、耐磨件、耐酸碱小推车、尼龙耐磨轴套、pe加工
- 主营：镜片料、聚苯砜、聚丙烯、聚乙烯、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：聚烯烃、机械仪器、工业壳体、聚乙烯、升级透明聚丙烯
- 主营：tpu、Eva、Pom、聚乙烯、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、杜邦pom、宝理pom、赛钢聚甲醛原料、旭化成pom、巴斯夫、pom100p、聚甲醛共聚物、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：防护服、热熔胶、共聚物、线性低密度聚乙烯、导光板、聚合物、改性料、短纤维、异型材、聚酰胺、abs树脂、瓶盖料、聚丙烯、行李箱、灌浆机、发泡薄、手机壳、连接器、尼龙料、合金料、聚甲醛、密封件、聚氨酯、增韧剂、保护套、滑石粉
- 主营：硅酮粉、耐温剂、增韧剂、线型低密度聚乙烯、阻燃剂、抗氧剂、PA66、ABS、PP、HDPE、LDPE、PC、PC/ABS、PEI、LCP、POM、TPEE、TPV、PPSU、SEBS、PMMA、PVC树脂
- 主营：PA66、POM、PC、线型低密度聚乙烯、PBT、PPS、LCP、PA9T、ABS、PC/ABS、PC/PBT、POE、EVA
- 主营：F20-03、m90-44、m90-45、聚甲醛原料、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：POM、TPV、ABS、聚乙烯、EMA、PA、PBT、TPU、PPS、EEA、沙林、EAA、PA66、PA6、EBA
- 主营：聚乙烯、POM
- 主营：化工原料、医药中间体、材料中间体、试剂
- 主营：POM 100P、PA66杜邦系列、POM 500P 杜邦、聚乙烯、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：ABS、PC、POM、聚乙烯、TPU、PP、LCP、PBT、PMMA、Pom100p、Pom900p、Pom500p、M90-44、F20-03、ABS747、ABS757、PEEK、PVDF、PPSU、PPA、PARA、PCTG、PA9T、Pa12、COC
- 主营：聚乙烯、pp
- 主营：POM、PPS、PA66、工程原料、PPSU原料、PVDF、PBT、PC、美国杜邦pom、日本宝理pom、日本旭化成pom、PEEK、POM 500p、POM 100p、Pom900p、POM M90-44、POM F20-03、TPEE、LCP、PA6T、PA9T、EVA、ABS、聚丙烯pp、共聚甲醛赛钢