High-density polyethylene elongation

Fig. 18. Induced open-circuit voltage in elongation plotted against amplitude at the end of film for as-cast films polypropylene (PP), high-density polyethylene (PE(H)), low-density polyethylene(PE(L)), polystyrene PS), and poly(methyl methacrylate) (PMMA). Span length = 3.6 cm. Electrode area=2.5 x 2.5 cm2. Film thickness =0.5 mm. Reproduced from Furukawa and others [J. Appl. Polym. Sci. 12, 2675 (1968)] by permission of John Wiley Sons, Inc.

Stabilized with 0.2% amine antioxidant High Density Polyethylene. Extrusion grades of hlgh-denslty polyethylene protected by 2.5% channel type black of 19 my particle size were exposed In a Weather-O-Meter for 10,000 hours without any evidence of serious mechanical damage, as measured by low temperature brittleness and elongation tests. This represents the useful limit In our accelerated weathering test, since as described In an earlier paper,(2) fllm-like deposits form on... 

Figure 4 Commercially blow-molded HDPE containers. Elongation retention of blow-molded, high density polyethylene .05-in. wall container sections pigmented with phthalocyanine green, chrome yellow, and Ti02 (rutile) as a 6 function of UV exposure.

Figure 5. High-density polyethylene (2% rutile Ti02, 0.5% LS). Elongation retention as a function of 45° south direct Florida exposure for high density polyethylene stabilized with 0.50% of various light stabilizers. Pigmented rutile TiOt.

Differences in the types of behavior were observed for the melts in the elongational flow experiment. Samples of moderate and broad molecular weight distribution exhibited local necking just after they reached maximum stress, and ductile failure occurred. Usually, several necks were observed. This type of behavior has also been noted in high-density polyethylene... 

Fig. 15. Tensile strength, amax yield stress, Qy, and elongation at break, eg, of high-density polyethylene as a function of temperature.

Fig. 13a. FTIR spectra taken at 300 K during elongation of a high-density polyethyloie film with light polarized alternately parallel and perpendicular to the stretching direction b Stress-strain diagrams of high-density polyethylene measured at 300 K and 343 K...

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