DSC curves of four kinds of polyethylene. (Low-density …
Two types of plastics including low-density polyethylene (LDPE) and high-density polyethylene (HDPE) were blended with a PG 58-28 neat binder after assessing their melting behavior along with ...
DSC curve of pure LDPE sample | Download Scientific Diagram
The main objective of this paper is to investigate the thermal properties of the kenaf cellulose (0 - 50%wt) and the low-density polyethylene (LDPE) composites. In addition, the effect of two...
Characterization of industrial low-density polyethylene: a thermal ...
2022年7月18日 · The attractiveness of LDPE is owed to its high versatility and adaptability for various manufacturing processes and applications. LDPE produced by the means of free-radical or Ziegler–Natta polymerization leads to wide molecular weight distributions and the formation of short- and long-chain branches.
DSC法测定聚乙烯结晶度的研究 - 百度文库
通过用调制式 DSC ( MDSC) 对样品在较宽温度范围内热容的测定, 证 实了 PE 结晶度对温度的依赖性, 并提出了在分析讨论 测量 PE 结晶度的数据时, 必须精确测定其所处环境温 度的观点。 融温度分布很宽, 易造成熔融焓测定的较大误差。 为 此 Gray 等 [ 2, 3] 提 出 用 总 热 焓 法 ( T ot al ent halpy met hod) 测定 PE 的结晶度 ( 如图 1 所示) 。 37 % 、 LLDPE 38 % 、 HDPE 59 % 。 其结果分别与表 1 中 DSC 实测法得到的 20 下的结晶度接近, 但 LDPE 结晶 度差别稍大。 这一结 …
DSC curve for sample-2 (Low Density Polyethylene)
Differential scanning calorimeter (DSC) was used for measuring the melting temperature (T m ), and the melting enthalpy (ΔH m ) of LDPE/propolis blended films on a DSC device...
A quantitative analysis of low density polyethylene and linear low ...
2004年4月8日 · An accurate and rapid test scheme to identify the type and composition of α-olefin in LDPE/LLDPE blends has been developed that utilizes differential scanning calorimetery (DSC) and Fourier transform infrared (FTIR) spectroscopy techniques.
用DSC鉴别LDPE／LLDPE共混吹塑地膜 - 百度学术
用差示扫描量热法(Differential Scanning Calorimetry 简称 DSC)对参加1989年全国质量分级评比的122个未知组分含量的地膜样品与已知组分含量的LDPE/LLDPE 地膜标样进行了分析对比,对未知样品进行了鉴别,并讨论了样品组成与其 DSC 谱图中熔融峰和熔融焓之间的关系,给出了 ...
Temperature (DSC) The melting point and crystallization temperature of polyethylene can be measured with a differential scanning calorimeter (DSC). The melting point is represented by the melting peak temperature in the DSC curve and can be used in qualitative analysis. It is also an indicator of the lowest temperature during molding processing.
ABSTRACT: On the bases of small-angle X-ray scattering (SAXS) and differential scanning calorimetry (DSC) tech niques it is possible to show that low density polyethylene (LDPE) annealed at...
应用案例 | DSC测试PE-LDPE-LLDPE-HDPE的熔融 - 化工仪器网
聚乙烯材料可分为：超高分子量pe（uhmwpe）、高密度pe（hdpe）、低密度pe（ldpe）、线性低密度pe（lldpe）。 聚乙烯的力学性能和热性能高度取决于晶型、分子量和支化度，不同种类聚乙烯材料的熔融温度和玻璃化转变温度的差异较大。