低密度聚乙烯 (CAS No.None)
- 物化性质
- 乳白色半透明蜡状固体树脂，无毒，软化点较低，超过软化点即熔融。密度0.91~0.925 g/cm3。具有良好的热熔接性、成型加工性、柔软性、抗冲击韧性、耐低温性和高频绝缘性。吸水性极低，几乎不吸水，化学稳定性优秀，对酸、碱、盐及有机溶剂较稳定，但对CO2及有机臭气渗透性大，对水蒸汽和空气渗透性差。易燃烧，燃烧时有石蜡味。在日光和热作用下易老化降解而变色，加入抗氧剂、紫外线吸收剂可改善；在化学交联剂或高能辐照下交联可提高软化点、耐温性、刚度和耐溶剂性。室温下可抵抗多种溶剂，但芳香烃和氯化烃溶剂可使其膨胀。易发生环境应力开裂。
- 密度
- 0.91~0.925 g/cm3
- 熔点
- 约105~115°C
English description（英文原文，共 1949 字符）
Product Name:low density polyethylene
English Name:low density polyethylene
CAS No.:9002-88-4
Aliases:LDPE, high pressure polyethylene
Molecular Formula:(C2H4)n
Physical Properties:Milky white, translucent, waxy solid resin, non-toxic, with a relatively low softening point and melts above it. Density 0.91~0.925 g/cm3. It has good heat sealability, processability, flexibility, impact toughness, low-temperature resistance, and high-frequency insulation. Water absorption is extremely low; it is almost non-hygroscopic. It exhibits excellent chemical stability, being stable to acids, alkalis, salts, and organic solvents, but has high permeability to CO2 and organic odors, while low permeability to water vapor and air. It is flammable and burns with a paraffin-like odor. Under sunlight and heat it tends to age, degrade, and discolor; adding antioxidants and UV absorbers can improve this. Crosslinking with chemical agents or high-energy radiation raises the softening point, heat resistance, stiffness, and solvent resistance. At room temperature it resists many solvents, but aromatic and chlorinated hydrocarbon solvents can cause swelling. It is susceptible to environmental stress cracking.
Uses:Mainly used for film products, such as agricultural films, ground cover films, greenhouse films, packaging films, blow-molded films for liquid packaging, heavy-duty bags, shrink films, and stretch films. Also used for injection-molded products such as small containers, lids, daily necessities; extruded pipes, sheets, wire and cable coatings, profiles; blow-molded hollow articles such as food containers, drug and cosmetic containers, and tanks. It is also widely used in medical devices, pharmaceutical and food packaging materials.
Technical Specifications:
Density: 0.91~0.925 g/cm3
Melting point: approximately 105~115°C
Tensile strength: 7~16 MPa
Elongation at break: 100%~650%
Vicat softening point: approximately 85~100°C
English Name:low density polyethylene
CAS No.:9002-88-4
Aliases:LDPE, high pressure polyethylene
Molecular Formula:(C2H4)n
Physical Properties:Milky white, translucent, waxy solid resin, non-toxic, with a relatively low softening point and melts above it. Density 0.91~0.925 g/cm3. It has good heat sealability, processability, flexibility, impact toughness, low-temperature resistance, and high-frequency insulation. Water absorption is extremely low; it is almost non-hygroscopic. It exhibits excellent chemical stability, being stable to acids, alkalis, salts, and organic solvents, but has high permeability to CO2 and organic odors, while low permeability to water vapor and air. It is flammable and burns with a paraffin-like odor. Under sunlight and heat it tends to age, degrade, and discolor; adding antioxidants and UV absorbers can improve this. Crosslinking with chemical agents or high-energy radiation raises the softening point, heat resistance, stiffness, and solvent resistance. At room temperature it resists many solvents, but aromatic and chlorinated hydrocarbon solvents can cause swelling. It is susceptible to environmental stress cracking.
Uses:Mainly used for film products, such as agricultural films, ground cover films, greenhouse films, packaging films, blow-molded films for liquid packaging, heavy-duty bags, shrink films, and stretch films. Also used for injection-molded products such as small containers, lids, daily necessities; extruded pipes, sheets, wire and cable coatings, profiles; blow-molded hollow articles such as food containers, drug and cosmetic containers, and tanks. It is also widely used in medical devices, pharmaceutical and food packaging materials.
Technical Specifications:
Density: 0.91~0.925 g/cm3
Melting point: approximately 105~115°C
Tensile strength: 7~16 MPa
Elongation at break: 100%~650%
Vicat softening point: approximately 85~100°C
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常见问题
- 低密度聚乙烯的 CAS 号是多少？
- 低密度聚乙烯的 CAS 号是 None。
- 低密度聚乙烯的分子式和分子量是什么？
- 低密度聚乙烯的分子式为 (C2H4)n。
- 低密度聚乙烯的英文名称是什么？
- 低密度聚乙烯的英文名称为 low density polyethylene。
- 低密度聚乙烯还有哪些别名？
- 低密度聚乙烯又称 LDPE、高压聚乙烯。
- 低密度聚乙烯有哪些供应商和生产厂家？
- 掌上化工当前收录 1 条低密度聚乙烯供应报价，来自 1 家供应商，可按地区、纯度、级别筛选对比。
- 低密度聚乙烯的供应商主要分布在哪些地区？
- 低密度聚乙烯的供应商主要分布在 上海市（1 条） 等地。
- 低密度聚乙烯有哪些级别可选？
- 平台上低密度聚乙烯的供应级别包括 工业级。
- 低密度聚乙烯的报价单位是什么？
- 低密度聚乙烯的报价单位主要有 千克。
- 哪里可以查到低密度聚乙烯的价格？
- 掌上化工低密度聚乙烯产品页汇总了各供应商的最新报价与规格，地址：/chemicals/di-mi-du-ju-yi-xi/。部分供应商价格为电议，可通过页面上的询价功能直接获取。
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