HDPE is shown to demonstrate three peaks in DMA testing with increasing temperature corresponding to relaxation mechanisms referred to as α, β and γ [16]. The β and γ relaxations correspond ...

2008年1月1日 · LLDPE and HDPE with CPO samples show only one melting temperature peak in DSC results, indicating the existence of one type of crystal species on all PE matrices. Dynamic mechanical analysis (DMA) shows the decrease of storage …

Changes in low-temperature properties as a function of molecular weight, MWD, crystallinity, and branch content were determined for HDPE, LLDPE, and their blends. The DMA data prove the resulting dependences. The reported findings allow one to understand and predict mechanical properties in the HDPE–LLDPE systems at subzero temperatures.

2016年9月28日 · HDPE is used as the test material, which shows close fitting of experimental results and theoretical predictions in the strain rate range of 10 −5 to 4 × 10 −2 s −1. Guidelines are presented to define the domain in which the prediction scheme is expected to …

2019年6月25日 · High-density polyethylene (HDPE) nanocomposites were prepared by a melting-compounding process with a polymethylsilsesquioxane (PMSQ) as nanofiller. In this process, the PMSQ nanoparticles were swollen in an organic solvent using a Ultra-Turrax system and sonication and blended with molten HDPE using a twin-screw extruder.

2022年4月19日 · The DMA and notched Izod impact test results show that the modulus ratio of the HDPE to elastomer is a key parameter that determines the impact resistance for the elastomer toughened HDPE composites. The modulus of the elastomer must be less than one-tenth of that of the HDPE in order to toughen HDPE effectively.

The results of dynamic mechanical analysis (DMA) and thermogravimetric differential thermal analysis (TG/DTA) showed that the addition of ALP provided enhanced viscoelastic and thermal properties.

Low-temperature properties of high-density polyethylene (HDPE), low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE), and their blends were studied. The analyzed...

在DMA测试中，样品在特定的频 率下经历一个动态力F。样品对 施加的应力的反应为一个动态的 形变x。形变和力具有相同的频 率，但是有些滞后。这种滞后可 以表述为相角ϕ。复合模量可以 从力的振幅F a、形变X a和相角中 得出，而且要考虑几何因子。

2016年3月1日 · High-density polyethylene (HDPE), Linear low density polyethylene (LLDPE), Maleic Anhydride grafted Polyethylene (MAPE). In other study the dynamic mechanical properties of microfibres of oil palm-reinforced acrylonitrile butadiene rubber (NBR) composites were investigated as a function of frequency, temperature, treatment and fibre content by ...