Effect of Blend Ratio on Physico-Mechanical Properties of Agro Stone Composite Caulking Materials

2022 ◽  
pp. 73-86
Author(s):  
Tadelle Nigusu Mekonnen ◽  
Tewekel Mohammed Belay ◽  
Tinsae Tsega Beyene ◽  
Yenehun Gidyelem Andualem ◽  
Mulugeta Admasu Delele ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Blend Ratio

scholarly journals Tensile Strength and Dispersibility of Pulp/Danufil Wet-Laid Hydroentangled Nonwovens

Materials ◽  
2019 ◽  
Vol 12 (23) ◽  
pp. 3931
Author(s):  
Chao Deng ◽  
R. Hugh Gong ◽  
Chen Huang ◽  
Xing Zhang ◽  
Xiang-Yu Jin
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Fiber Length ◽  
Water Jet ◽  
Pulp Fibers ◽  
Wet Strength ◽  
Blend Ratio ◽  
Sewage Systems

Wet-laid hydroentangled nonwovens are widely used for disposable products, but these products generally do not have good dispersibility and can block sewage systems after being discarded into toilets. In this study, both pulp fibers and Danufil fibers are selected as we hypothesize that the high wet strength and striated surface of Danufil fibers would allow us to produce nonwovens with better dispersibility while having enough mechanical properties. The wet strength and dispersibility of nonwovens are systematically studied by investigating the influence of the fiber blend ratio, fiber length, and water jet pressure. The results indicate that the percent dispersion could be as high as 81.3% when the wet strength is higher than 4.8 N, which has been improved greatly comparing the percent dispersion of 67.6% reported before.

The properties of sericin/poly(vinyl alcohol) films modified by boric acid

e-Polymers ◽  
2010 ◽  
Vol 10 (1) ◽  
Author(s):  
Qun Wang ◽  
Lu Qi
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Boric Acid ◽  
Vinyl Alcohol ◽  
Water Resistance ◽  
Poly Vinyl Alcohol ◽  
Scanning Calorimetry ◽  
Blend Ratio ◽  
Percutaneous Drug Delivery ◽  
Thermal Stability Of

AbstractA group of films mainly composed of sericin and poly(vinyl alcohol) (PVA), using boric acid (BA) as a modifier, were prepared by a technique of solution casting. In this work, the effect of BA and sericin on the mechanical properties and water resistance of the films was analyzed, the interior morphology of the films were described by a scanning electron microscopy (SEM), the thermal stability of the films was characterized by differential scanning calorimetry (DSC), and the reaction mechanism was proposed according to the previous literature and the test of Fourier transform infrared spectrum (FTIR). Results indicated that, the properties of the membrane were the functions of the blend ratio of sercin to PVA and the content of BA. The use of BA increased the tensile strength, improved the water resistance and the thermal stability, and varied the interior morphology of the films. The content of sericin greatly influenced the combination of properties of the films, especially the mechanical properties, interior morphology, thermal stability, and water resistance reducing with the increasing of sericin content. The films have potential to be used in materials, such as skin-care coatings for beauty, percutaneous drug delivery systems for exterior intact skin, due to the characteristics of the components and the good mechanical properties of the films.

Physical And Mechanical Properties Of Biodegradable Plastic Produced From Jackfruit (Artocarpus Heterophyllus) Seed and Sago Starch Blend

2020 ◽  
Vol 13 ◽  
Author(s):  
Junaidah Md Sani ◽  
Nur Sha'adah Zainuddin ◽  
Mohd Suhazree Mohd Azhar ◽  
Fairuzdzah Ahmad Lothfy
Keyword(s):  
Mechanical Properties ◽  
Absorption Rate ◽  
Raw Materials ◽  
Amylose Content ◽  
Physical And Mechanical Properties ◽  
Biodegradable Plastic ◽  
Sago Starch ◽  
Tropical Fruit ◽  
Blend Ratio ◽  
Artocarpus Heterophyllus

Background: Jackfruit (Artocarpus Heterophyllus) is a tropical fruit that has high amylose content in its seeds similar to sago starch. Thus, jackfruit seeds and sago are suitable raw materials for the production of biodegradable plastic (BGP). Objective: The objective of this research is to investigate the physical and mechanical properties of BGP produced from the blend of jackfruit seed and sago starch. The BGP was prepared by mixing different ratios of the jackfruit seed flour to the sago flour in distilled water with the addition of 0.1 M hydrochloric acid (HCl). The mixture was stirred and heated at 80 °C and later mixed with glycerol. The mixture was neutralized with 0.1 M sodium hydroxide (NaOH) and was casted by using casting plate technique Results: The results showed that the optimum tensile strength was was obtained at 2.06 MPa. at the blend ratio of 7:3. The maximum absorption rate of water ranged from 32 % to 34 % occurred at the blend ratio of 1:9 while the lowest absorption rate ranged from 21% to 26% occurred at the blend ratio of 5:5. The degradability of BGP was indicated by decreasing of the FT-IR spectra peaks intensity and broadening of the bandwidth due to degradation of starch in the BGP. Conclusion: The blend ratio of 10:0 showed the highest degradability rate. Conclusively, that the physical and mechanical properties are affected by the blend ratios.

Dynamically Vulcanized PP/EPDM Blends: Effects of Different Types of Peroxides on the Properties

2003 ◽  
Vol 76 (4) ◽  
pp. 1001-1018 ◽  
Author(s):  
K. Naskar ◽  
J. W. M. Noordermeer
Keyword(s):  
Mechanical Properties ◽  
Solubility Parameter ◽  
Chemical Nature ◽  
Thermoplastic Elastomers ◽  
Dicumyl Peroxide ◽  
Fragmentation Mechanism ◽  
Blend Ratio ◽  
Thermoplastic Vulcanizates ◽  
Different Types ◽  
Curing Agents

Abstract Thermoplastic vulcanizates (TPVs) or dynamic vulcanizates are thermoplastic elastomers produced by simultaneous mixing and crosslinking of a rubber and a thermoplastic. The effects of different types of peroxides as curing agents on the properties of PP/EPDM TPVs were investigated at a fixed blend ratio. The mechanical properties change significantly with the chemical nature of the peroxides, the extent of crosslinking of EPDM and the extent of degradation of PP. Three main parameters have been identified governing the final mechanical properties of TPVs: the solubility parameter of a peroxide relative to the substrates PP and EPDM, the fragmentation mechanism of the peroxide and the kinetic aspects of the peroxide fragmentation. Dicumyl peroxide gives the best balance of all properties, it complies the best of all with these parameters.

scholarly journals Compatibilization of Vulcanized SBR/NBR Blends using Cis-Polybutadiene Rubber: Influence of Blend Ratio on Elastomer Properties

2019 ◽  
Vol 3 (12) ◽  
pp. 135-143 ◽  
Author(s):  
Ahmed Salah Doma ◽  
Elbadawy A. Kamoun ◽  
Sayed Abboudy ◽  
Mohammed A. Belal ◽  
Sherine N. Khattab ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Industrial Applications ◽  
Rubber Matrix ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Sem Images ◽  
Blend Ratio ◽  
Network Characteristics ◽  
Polybutadiene Rubber ◽  
Cure Time

Blends composed of styrene butadiene rubber (SBR) and acrylonitrile-butadiene rubber (NBR) were fabricated by melt blending technique using two-roll mill blend machine. Cis- polybutadiene rubber (CBR) was used as a compatibilizer for enhancing the homogeneity between SBR and NBR phases in blends. Although, no previous reports were found to discuss improving electrical properties of vulcanized SBR/NBR blends using unfilled rubber system (i.e. no fillers incorporated).  Raman spectra and SEM images indicate that a significant compatibility within the rubber matrix is observed, due to using CBR compatibilizer. The effect of SBR/NBR blend ratio on curing characteristics, physico-mechanical properties, and physicochemical properties (e.g. network characteristics and thermodynamic parameters) were studied. SBR/NBR blend showed comparatively better mechanical properties, compared to each other individually rubber system. Curing parameters e.g. Mooney viscosity and hardness were increased, while a reduction in cure time and specific gravity was observed with increasing SBR ratio in blends. Results revealed that increasing SBR resulted in an enhancement of the tensile strength, modulus at 300 % and elongation at break up to 40 phr, and then gradually decreased. The TGA results indicated that SBR/NBR blends were thermally decomposed at a temperature range of 340-520°C. The notable decrease of DC conductivity (σdc) of vulcanized blends is owing to the decrease of NBR, which is a polar portion and is responsible for increasing the conductivity of vulcanized blends. This proved that the targeted industrial applications for vulcanized blends are entirely depending upon SBR/NBR blend in elastomers matrix. 

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