Melt Index and Melt Flow Ratio of Polyethylene Resin

The melt fluidity of the two typical plastic, including polypropylene (PP) and polyethylene(PE), are studied in the different mold with the different characteristics of channel cross section and channel profile for the fluidity test of the melt. The relationship among the flow ratio, characteristics of channel cross section and channel profile are analyzed. The modified law of the flow ratio was proposed on the basis of the experiment, and discussed in detail. The results are better based on the experiment analysis, and the checking formula of the melt flow ratio could be used to check the designed mold in production.

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The analysis of “Gels” in polymer films

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100153786 ◽

1989 ◽

Vol 47 ◽

pp. 362-363

Author(s):

G. M. Brown ◽

D. F. Brown ◽

J. H. Butler

Keyword(s):

Molecular Weight ◽

Film Industry ◽

Local Stress ◽

Melt Index ◽

Polyethylene Films ◽

Crosslinked Polymer ◽

Polymeric Gels ◽

Mineral Particles ◽

Polymeric Species ◽

Special Concern

The term “gel”, in the jargon of the plastics film industry, may refer to any inclusion that produces a visible artifact in a polymeric film. Although they can occur in any plastic product, gels are a principle concern in films where they detract from the cosmetic appearance of the product and may compromise its mechanical strength by acting as local stress concentrators. Many film gels are small spheres or ellipsoids less than one millimeter in diameter whereas other gels are fusiform-shaped and may reach several centimeters in length. The actual composition of gel inclusions may vary from miscellaneous inorganics (i.e. glass and mineral particles) and processing additives to heavily oxidized, charred or crosslinked polymer. The most commonly observed gels contain polymer differing from the bulk of the sample in its melt viscosity, density or molecular weight.Polymeric gels are a special concern in polyethylene films. Over the years and with the examination of a variety of these samples three predominant polymeric species have been observed: density gels which have different crystallinity than the film; melt-index gels in which the molecular weight is different than the film and crosslinked gels which are comprised of crosslinked polyethylene.

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Dividend Payout Ratio: Persoalan Free Cashflow, Debt To Equity Ratio, Kepemilikan Institutional, Investment Opportunity, Dan Kesejahteraan Karyawan

Liquidity ◽

10.32546/lq.v6i1.35 ◽

2017 ◽

Vol 6 (1) ◽

pp. 1-11

Author(s):

Nurlis Azhar ◽

Helmi Chaidir

Keyword(s):

Cash Flow ◽

Significant Influence ◽

Stock Exchange ◽

Institutional Ownership ◽

Free Cash Flow ◽

Manufacturing Companies ◽

Flow Ratio ◽

Prediction Ability ◽

Employee Welfare ◽

Equity Ratio

This study was conducted to examine the effect of Free Cash Flow Ratio, Debt Equity Ratio (DER), Institutional Ownership, Employee Welfare and Price Earning Ratio (PER) to Divident Payout Ratio (Parliament) partially on manufacturing companies listed on Indonesia Stock Exchange period 2011-2015. In addition, to test the feasibility of regression model, the influence of Free Cash Flow Ratio, Debt Equity Ratio (DER), Institutional Ownership, Employee Welfare and Price Earning Ratio (PER) to Divident Payout Ratio (DPR) simultaneously at manufacturing company listed on Bursa Indonesia Securities period 2011-2015. The population in this study are 146 manufacturing companies that have been and still listed in Indonesia Stock Exchange period 2011-2013. The sampling technique used was purposive sampling and obtained sample of 42 companies. Data analysis technique used is by using multiple linear regression test. The results showed that Free Cash Flow Ratio, no significant effect on Divident Payout Ratio (DPR). Debt Equity Ratio (DER) has a negative and significant influence on Divident Payout Ratio (DPR), Institutional Ownership has a significant positive effect on Divident Payout Ratio (DPR), Employee Welfare and Price Earning Ratio (PER) has a positive and significant influence on the Divident Payout Ratio ). Simultaneously Free Cash Flow Ratio, Debt Equity Ratio (DER), Institutional Ownership, Employee Welfare and Price Earning Ratio (PER) give effect to Divident Payout Ratio. The prediction ability of the five variables to the Divident Payout Ratio (DPR) is 21.3% as indicated by the adjusted R square of 0.271 while the remaining 79.7% is influenced by other factors not included in the research model.

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Preferential Orientation of Photochromic Gadolinium Oxyhydrides

10.26434/chemrxiv.12377690.v1 ◽

2020 ◽

Author(s):

Elbruz Murat Baba ◽

Jose Montero ◽

Dmitrii Moldarev ◽

Marcos V. Moro ◽

Max Wolff ◽

...

Keyword(s):

Thin Films ◽

Grain Size ◽

Rare Earth ◽

Preferential Orientation ◽

Reactive Magnetron ◽

Flow Ratio ◽

Deposition Pressure ◽

Step Process ◽

Oxidation In Air ◽

Key Parameter

We report preferential orientation control in photochromic gadolinium oxyhydride (GdHO) thin films deposited by a two-step process. Gadolinium hydride (GdH2-x) films were grown by reactive magnetron sputtering, followed by oxidation in air. The preferential orientation, grain size, anion concentrations, and photochromic response of the films are strongly dependent on the deposition pressure. GdHO films show preferential orientation along the [100] direction and exhibit photochromism when synthesized at deposition pressures up to 5.8 Pa and. The photochromic contrast is larger than 20 % when the films are deposited below 2.8 Pa with 0.22 H2/Ar flow ratio. We argue that the degree of preferential orientation defines the oxygen concentration which is known to be a key parameter for photochromism in rare-earth oxyhydride thin films. The experimental observations described above are explained by the oxidation-induced decrease of the grain size as a result of the increase of the deposition pressure of the sputtering gas.

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POLYMER MELT FLOW IN ASYMMETRIC SUDDEN EXPANSIONS: A NUMERICAL STUDY

10.26678/abcm.encit2016.cit2016-0061 ◽

2016 ◽

Author(s):

Felipe Oliveira Basso ◽

Paulo Zdanski ◽

Diego Beppler ◽

Miguel Vaz Jr.

Keyword(s):

Numerical Study ◽

Polymer Melt ◽

Melt Flow

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Global return flow ratio

10.29104/wins.l.0111.2018 ◽

2017 ◽

Cited By ~ 1

Author(s):

Chloé Meyer

Keyword(s):

Drinking Water ◽

Water Source ◽

Return Flow ◽

Drinking Water Source ◽

Chemical Contamination ◽

Flow Ratio ◽

Piped Water ◽

Dug Wells

Population using an improved drinking water source (piped water into dwellings, yards or plots; public taps or standpipes; boreholes or tubewells; protected dug wells; or protected springs and rainwater) that is located on premises and available when needed and which is free of faecal and priority chemical contamination. Basin Pollution Quality Waste

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