Preparation and Properties Research of Anti-Fogging Polypropylene Packaging Films

2012 ◽  
Vol 262 ◽  
pp. 581-585 ◽  
Author(s):  
Xiao Jin Gao ◽  
Li Qiang Huang ◽  
Xin Li
Keyword(s):  
Silica Sol ◽  
Range Analysis ◽  
Machine Direction ◽  
Polypropylene Film ◽  
Mixture Ratio ◽  
Elongation At Break ◽  
Coated Film ◽  
Span 80 ◽  
Optimum Formula ◽  
The Relationship

The anti-fogging properties of a new anti-fogging agent containing silicon sprayed on polypropylene were discussed. The anti-fogging agent was prepared by using silicone hydride and silica sol, the new anti-fogging agent with different consistency was daubed on the polypropylene film .The contact angle, first dripping time and ten drippings time of the anti-fogging PP films were tested. According to the range analysis, the best mixture ratio, which was just the optimum formula was found. The relationship between the anti-fogging agent consistence and the anti-fogging performance was discussed too. The result showed that the anti-fogging properties of the coated film were better and the mechanical properties of the coated film enhanced in some sort. The mixture ratio of the anti-fogging agent was that the silica sol was 12phr; the span 80 was 15%; the pH was 5.5. After the film was coated, the tensile strength of machine direction raised by 109.14% than the contrast. The elongation at break of transverse direction raised by 32.51MPa and that of machine direction raised by 17.95MPa. This anti-fogging agent containing silicon was preferable to polypropylene.

Effect of antiblock and slip additives on the properties of tubular quenched polypropylene film

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Ashwith Melkar ◽  
Ravi Kumar ◽  
Vishwa Pratap Singh ◽  
Priyanka Singh ◽  
Satyajit Samanta ◽  
...  
Keyword(s):  
Tensile Properties ◽  
Transverse Direction ◽  
Film Surface ◽  
Screw Extruder ◽  
Machine Direction ◽  
Polypropylene Film ◽  
Film Properties ◽  
Tear Strength ◽  
Twin Screw ◽  
Slip Agent

Abstract In the present investigation, silica and talc were used as antiblock additives with slip additive to investigate their effects on tubular quenched polypropylene (TQPP) film properties. Polypropylene (PP) powder was compounded with additives in twin-screw extruder and subsequently processed through TQPP machine to prepare the films. Tear and tensile properties [in machine direction (MD) and transverse direction (TD)] and surface properties of the produced TQPP films were investigated in terms of optics and coefficient of friction (CoF). The effect of conditioning time on CoF was also studied. Addition of slip agent alone to PP did not show any significant change in tear strength, CoF and tensile properties, whereas CoF reduced drastically by adding both slip and antiblock agents in combination. Reduction in CoF values were found to be more pronounced in the presence of silica-based antiblock compared to talc-based antiblock. Film surface morphology was further examined by field-emission scanning electron microscopy. The tear strength and the gloss of TQPP film decreased slightly in presence of only antiblock agents, but the tensile strength was found to increase. It was also found that tensile properties of TQPP films were superior in silica-based formulation, whereas tear strength was better in talc-based formulation in MD and TD.

The Study on the Warm Mix Asphalt Mixture Ratio

2013 ◽  
Vol 712-715 ◽  
pp. 858-864
Author(s):  
Yong Hong Wang ◽  
Xi Ming Tan ◽  
Xiong Jun He ◽  
Li Wu ◽  
Bo Dong ◽  
...  
Keyword(s):  
Heating Temperature ◽  
Asphalt Mixture ◽  
Warm Mix Asphalt ◽  
Heating Time ◽  
Mixing Ratio ◽  
Mixture Ratio ◽  
Conservation Of Energy ◽  
Mixed Material ◽  
Relationship Of ◽  
The Relationship

The temperature has been reduced in the aggregate heating, mixing, transportation and paving for Warm mix asphalt mixture (WMA),but the temperature of hot mix mixes has no diversification. So the mixing ratio of warm mix asphalt mixed material cannot be completely designed to the HMA and it should be designed by the mixing ratio of WMA. Through analyzing the relationship of aggregate moisture content and getting the performance of the allowed moisture . Combining with the principle of conservation of energy and laboratory to get the conclusion of the aggregate heating time and heating temperature, in order to calculate the construction control parameters, and it will promote the application of asphalt pavement in the construction.

Design of Mix Proportion of Cement Mortar with High-Performance Composite Semi-Flexible Pavement

2013 ◽  
Vol 641-642 ◽  
pp. 342-345 ◽  
Author(s):  
Ya Jun Wang ◽  
Chang Ying Guo ◽  
Yan Feng Tian ◽  
Jian Jun Wang
Keyword(s):  
Compressive Strength ◽  
High Performance ◽  
Cement Mortar ◽  
Rupture Strength ◽  
Flexible Pavement ◽  
Mixture Ratio ◽  
Cement Ratio ◽  
Mix Proportion ◽  
High Performance Composite ◽  
The Relationship

Nine groups of cement mortar with different mix proportion were designed to measure their fluidity 0h, 0.25h, 0.5h, 0.75h and 1h later, compressive strength and rupture strength of 3d, 7d and 28d were also tested to find out the relationship between compressive strength, rupture strength, water-cement ratio and sand-cement ratio by software Origin. Considered the three factors above, the optimum mixture ratio was determined finally to meet the requirements.

scholarly journals Effects of Co-substrates’ Mixing Ratios and Loading Rate Variations on Food and Agricultural Wastes’ Anaerobic co-digestion Performance

2020 ◽  
Author(s):  
Nour El houda Chaher ◽  
Nils Engler ◽  
Abdallah Nassour ◽  
Michael Nelles
Keyword(s):  
Organic Waste ◽  
Waste Treatment ◽  
Biogas Production ◽  
C:N Ratio ◽  
Closed Cycle ◽  
Mixture Ratio ◽  
Biogas Yield ◽  
Loading Rates ◽  
Mixing Ratios ◽  
The Relationship

Abstract Tunisia is one of the developing countries which faces crucial challenges, the most prominent of which are the production of organic waste, the need for an appropriate waste treatment, and the demand for water and energy conservation. To this end, the present research was designed to develop a technical concept on closed cycle ‘biowaste to bioenergy’ treating food waste (FW) through combined biological processes. In this approach, semi-continuous anaerobic co-digestion (ACoD) of FW, wheat straw (WS), and cattle manure (CM) was tested to investigate the relationship between the effect of the feedstock mixtures and C:N ratio on biogas and digestate generation at different organic loading rates (OLRs) ranging from 2 to 3.6 kg VS/m3.d. Results showed that the mono-digested FW was optimal and reached 565.5 LN/kg VSin at an OLR of 2.4 kg VS/m3.d, and then a drop of biogas production was recorded. However, for co-digested substrates, the optimum mixture ratio was FW:CM 75:25, where 62%, 39.89%, 91.26%, 130.9% and 119.97% of the biogas yield improved for OLRs ranging from 2 to 3.6 kg VS/m3. d, respectively. Admittedly, the target of this work was to enhance the ACoD process, but it also examined the exploitation of different AD-effluents. Therefore, special attention was paid to the generated digestates to decide how it can be efficiently upcycled later. Thus, the closed cycle ‘biowaste to bioenergy’ treatment met two of the major Tunisian concerns: efficient organic waste management as well as sustainable bioenergy production.

The Photo-Oxidation of Polypropylene Monofilaments

1976 ◽  
Vol 46 (8) ◽  
pp. 590-599 ◽  
Author(s):  
D. J. Carlsson ◽  
F. R. S. Clark ◽  
D. M. Wiles
Keyword(s):  
Tensile Strength ◽  
Chemical Analysis ◽  
Radical Scavenging ◽  
Fiber Surface ◽  
Oxidation Products ◽  
Polypropylene Film ◽  
Elongation At Break ◽  
Photo Oxidation ◽  
Polypropylene Monofilament ◽  
Oxidized Polypropylene

The photo-oxidation of commercial, isotactic polypropylene monofilament, initiated by xenon-arc irradiation in air, leads to the initial accumulation in the fiber surface of both carbonyl species and hydroperoxide groups. These chemical changes are accompanied by a severe drop in the elongation at break. Extended irradiation leads to a substantial accumulation of these oxidation products throughout the fiber and to a loss of tensile strength. Oxidation products were identified and estimated from transmission and internal reflection in spectroscopy [∼C(O)∼ and —OH] and by chemical analysis (—OOH). Marked increases in fiber wettability were also found to accompany photo-oxidation. Distinct differences in product ratios from photo-oxidized polypropylene film and fiber samples were observed. These differences are consistent with the morphological control of the efficiency of initiation after hydroperoxide photocleavage, but are more likely to result from some radical scavenging by the unextractable phenolic additive in the commercial fiber.

The Relationship between Concrete Road Performance and Salt Frost

2013 ◽  
Vol 857 ◽  
pp. 271-276
Author(s):  
Sheng Bo Zhou ◽  
Ai Qin Shen
Keyword(s):  
Abrasion Resistance ◽  
Chloride Ion ◽  
Ion Permeability ◽  
Mixture Ratio ◽  
Tensile Strength Test ◽  
Flexural Tensile Strength ◽  
Chloride Ion Penetration ◽  
Road Performance ◽  
Chlorine Ion ◽  
The Relationship

To carry out frost resistance, resistance to chlorine ion permeability, abrasion resistance and flexural tensile strength test for different mixture ratio of concrete, the influence of salt frost was systematically analyzed on the other concrete road performance. The results show that the salt frost made the decrease of strength of concrete, resistance to chloride ion penetration reduce, but had a little effects on abrasion resistance.

Study on corrosion resistance of superhydrophobic surface on aluminum alloy

2021 ◽  
Vol 11 (12) ◽  
pp. 2004-2009
Author(s):  
Ruomei Wu ◽  
Shuai Wu ◽  
Haiyun Jiang ◽  
Zigong Chang ◽  
Zhiqing Yuan ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Aluminum Alloy ◽  
Corrosion Potential ◽  
Polypropylene Film ◽  
Sliding Angle ◽  
Water Contact ◽  
Nano Structure ◽  
Anode Oxidation ◽  
The Relationship ◽  
Aluminum Alloy Surface

Anti-corrosion of aluminum alloys with different roughness were researched in this study. To further verify the relationship between anti-corrosion and surface roughness, surface with micro structure alloy was successfully fabricated via anode oxidation on aluminum. The water contact angle of aluminum alloy surface after coating polypropylene film was 154° and sliding angle was 3°. The micro-nano structure was constructed by adding nano-SiO2. The contacts angle of surface was 165° and the sliding angle was 1.8°. The superhydrophobic samples were used to test corrosion resistance. Compared with aluminum coated with unmodified film, the corrosion potential for modified superhydrophobic aluminum alloy increased by about 0.05 V. When nano-SiO2 particles were added, the corrosion resistance for the sample was also improved.

MODELING AND OPTIMIZING PROPERTIES OF NANOCLAY–NITRILE RUBBER COMPOSITES USING BOX–BEHNKEN DESIGN

2011 ◽  
Vol 84 (4) ◽  
pp. 455-473 ◽  
Author(s):  
Meera Balachandran ◽  
S. S. Bhagawan ◽  
R. Muraleekrishnan
Keyword(s):  
Layered Silicate ◽  
Silica Content ◽  
Response Surfaces ◽  
Regression Equations ◽  
Launch Vehicles ◽  
Elongation At Break ◽  
Box Behnken Design ◽  
Contour Plots ◽  
The Relationship ◽  
Good Agreement

Abstract The mechanical behavior of acrylonitrile butadiene copolymer (NBR)–organomodified layered silicate (nanoclay) was modeled using design of experiments approach. A Box–Behnken design with three factors and three levels was used to model the relationship between properties of NBR nanocomposites and the ingredients. The factors considered in the design were silica content, nanoclay loading, and dicumyl peroxide content. The nanocomposites were evaluated for tensile strength, modulus, elongation at break, oxygen permeation rate, and effect of oil and heat aging on mechanical properties. Regression equations were generated to model the properties of interest and generate response surfaces and contour plots. The predicted properties of the nanocomposites were in good agreement with the experimental results. The contour plots were overlaid within the applied constraints to identify the combination of factor ranges that gives the optimal performance of the nanocomposites for application as control system bladders in satellite launch vehicles.

Mechanical Properties of the Regenerated Rubber Prepared by Waste Tire Powders and Fillers

2012 ◽  
Vol 487 ◽  
pp. 33-37
Author(s):  
Zhi Lei Zhang ◽  
Yi He Zhang ◽  
Xiang Hai Meng
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Sulfur Content ◽  
Curing Temperature ◽  
Optimal Conditions ◽  
Range Analysis ◽  
Elongation At Break ◽  
Technical Parameters ◽  
Waste Tire ◽  
Orthogonal Experiments

Waste tire powder (WTP) was reclaimed mechanically in presence of a new composite additive which consists of reinforcing materials (RM) and toughening materials (TM), and the effects of technical parameters and additives were investigated. According to the orthogonal experiments and the range analysis, the final ranking of the significance of factors in tensile properties was determined to be as follows: TM content > curing temperature > sulfur content > TBBS content > RM content (for tensile strength) and sulfur content > curing temperature > TBBS content > TM content > RM content (for elongation at break). The optimal conditions for tensile strength and elongation at break were determined respectively. Tensile strength and elongation at break tended to decrease after an initial ascent with the RM content increased. An apparent ascent of elongation at break was observed as TM content increases. Tensile strength increased first, and then decreased.

scholarly journals Evaluation of Beeswax Influence on Physical Properties of Lipstick Using Instrumental and Sensory Methods

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Giedre Kasparaviciene ◽  
Arunas Savickas ◽  
Zenona Kalveniene ◽  
Saule Velziene ◽  
Loreta Kubiliene ◽  
...  
Keyword(s):  
Cocoa Butter ◽  
Physical Properties ◽  
Radical Scavenging ◽  
Glass Tube ◽  
Mixture Ratio ◽  
Grapeseed Oil ◽  
Sensory Analyses ◽  
Sea Buckthorn Oil ◽  
The Relationship ◽  
Central Composite

The aim of this study was to optimize the lipsticks formulation according to the physical properties and sensory attributes and investigate the relationship between instrumental and sensory analyses and evaluate the influence of the main ingredients, beeswax and oil, with analysis of lipsticks properties. Central composite design was used to optimize the mixture of oils and beeswax and cocoa butter for formulation of lipsticks. Antioxidant activity was evaluated by DPPH free radical scavenging method spectrophotometrically. Physical properties of lipsticks melting point were determined in a glass tube; the hardness was investigated with texture analyzer. Sensory analysis was performed with untrained volunteers. The optimized mixture of sea buckthorn oil and grapeseed oil mixture ratio 13.96 : 6.18 showed the highest antioxidative activity (70±0.84%) and was chosen for lipstick formulation. According to the sensory and instrumental analysis results, optimal ingredients amounts for the lipstick were calculated: 57.67% mixture of oils, 19.58% beeswax, and 22.75% cocoa butter. Experimentally designed and optimized lipstick formulation had good physical properties and high scored sensory evaluation. Correlation analysis showed a significant relationship between sensory and instrumental evaluations.

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