The impact of selected granulometric properties of poly(vinyl chloride) on the effectiveness of the extrusion process

2013 ◽  
Vol 33 (1) ◽  
pp. 77-85 ◽  
Author(s):  
Bronisław Samujło ◽  
Janusz W. Sikora
Keyword(s):  
Vinyl Chloride ◽  
Extrusion Process ◽  
Poly Vinyl Chloride ◽  
Unit Energy ◽  
Basic Parameters ◽  
Screw Diameter ◽  
Unit Energy Consumption ◽  
Pellet Density ◽  
The Impact ◽  
Polymer Unit

Abstract The article presents results of a study of the effect of selected granulometric features of plastified poly(vinyl chloride) granule on the basic parameters of extrusion. In the study, it was determined how mass polymer flow rate, power supplied to the extruder, power transmitted by the polymer, unit energy consumption, and energy efficiency of the extrusion process were related to pellet length and bulk pellet density. The tests were carried out using an extruder with a screw diameter of 25 mm and a length-to-diameter ratio of 25, and involved processing of pellets of different lengths at variable rotational speeds of the screw. It was established that the granulometric features of plastified poly(vinyl chloride) considered in this study, i.e., pellet length and pellet bulk density, affect the effectiveness of the extrusion process. It was shown that best effectiveness of extrusion is achieved with the use of a granule characterized by a pellet length that is close to the other characteristic dimension of granule – its pellet diameter.

Effect of poly (methyl methacrylate)-grafted-talc content on mechanical properties and thermal degradation of poly (vinyl chloride) composites

2012 ◽  
Vol 32 (4-5) ◽  
pp. 275-282 ◽  
Author(s):  
Azman Hassan ◽  
Noor Izyan Syazana Mohd Yusoff ◽  
Aznizam Abu Bakar
Keyword(s):  
Mechanical Properties ◽  
Methyl Methacrylate ◽  
Vinyl Chloride ◽  
Flexural Modulus ◽  
Nitrogen Atmosphere ◽  
Radical Initiation ◽  
Poly Methyl Methacrylate ◽  
Poly Vinyl Chloride ◽  
Free Radical Initiation ◽  
The Impact

Abstract The influence of talc and poly (methyl methacrylate) (PMMA)-grafted (g)-talc on the mechanical properties of poly (vinyl chloride) (PVC) was investigated. The graft copolymerization was carried out under nitrogen atmosphere, using the free radical initiation technique. The blend formulations were first dry blended using a mixer before being milled into sheets on a two-roll mill at 165°C, and then hot pressed into composites at 190°C. The flexural modulus of both composites increased with increasing filler content from 0 to 20 part per hundred resin (phr), however the increment of grafted (57.7%) was higher than ungrafted composites (48.5%). A similar trend has also been observed for thermal stability. The impact strength of grafted was increased by 45.82%, whereas 18.96% in reduction was observed for the ungrafted composites. The decrement of flexural strength by 16.6% and 21.1% of grafted and ungrafted, respectively, has also shown the improvement in mechanical properties of grafted composites.

The extrusion of plasticized poly(vinyl chloride) in an extruder with a modified feed zone. Part 1: extrusion process

2015 ◽  
Vol 35 (2) ◽  
pp. 191-198 ◽  
Author(s):  
Janusz W. Sikora ◽  
Bronisław Samujło ◽  
Andrzej Stasiek
Keyword(s):  
Vinyl Chloride ◽  
Experimental Studies ◽  
Extrusion Process ◽  
Screw Extruder ◽  
Pocket Depth ◽  
Single Screw Extruder ◽  
Poly Vinyl Chloride ◽  
Feed Zone ◽  
Process Energy ◽  
Opening Width

Abstract The work presents the results of experimental studies of plasticized poly(vinyl chloride) (PVC) extruded by a single-screw extruder with a modified feed section. The variable factors were the feed opening width, the feed pocket depth in the extruder barrel, and the rotational speed of the screw. The following parameters were studied: extrudate temperature Tw (°C), screw torque M (Nm), polymer mass flow rate G (kg/h), unit consumption of energy supplied to the extruder Ejc (J/g), and extrusion process energy efficiency κ (%). It was found that the increase in the depth of the pocket and the decrease in the width of the feed opening influence the extrusion process in a positive way.

Improving the Photostabilization of Poly(vinyl chloride) Using 4-(benzylideneamino)benzenesulfonamide Tin Complex

2022 ◽  
Vol 16 (1) ◽  
pp. 23
Author(s):  
Hassan Ghani ◽  
Emad Yousif ◽  
Mohammed Kadhom ◽  
Waled Abdo Ahmed ◽  
Muhammad Rahimi Yusop ◽  
...  
Keyword(s):  
Weight Loss ◽  
Vinyl Chloride ◽  
Photo Degradation ◽  
Viscosity Change ◽  
Force Microscopy ◽  
Atomic Force ◽  
Poly Vinyl Chloride ◽  
Pvc Film ◽  
Before And After ◽  
The Impact

The photostabilization of poly (vinyl chloride) (PVC) film filled with an organotin complex in its structure was examined and compared with the blank PVC film. The organotin (IV) complex that contains 4-(benzylideneamino) benzenesulfonamide as a ligand was synthesized and applied as a PVC photostabilizer. The impact of the complex on the polymer was assessed by comparing the properties of the films with and without the complex, before and after irradiation, using Fourier transform infrared spectroscopy, weight loss, viscosity change, atomic force microscopy, and field emission scanning electron microscopy (FE-SEM). Results showed that the complex film had lower weight loss, gel content, and molecular weight deterioration than the plain PVC film. Also, surfaces of the complexes-filled films were smoother, less lumpy, and more homogeneous. These findings were obtained via the FE-SEM and light microscope images and confirmed by measuring the roughness factor. The organotin (IV) complex proved its activity in delaying the photo-degradation of PVC by several mechanisms. Ultimately, the Tin complex has effectively protected the PVC film against irradiation. The photostabilization of poly (vinyl chloride) (PVC) film filled with an organotin complex in its structure was examined and compared with the blank PVC film. The organotin (IV) complex that contains 4-(benzylideneamino) benzenesulfonamide as a ligand was synthesized and applied as a PVC photostabilizer. The impact of the complex on the polymer was assessed by comparing the properties of the films with and without the complex, before and after irradiation, using Fourier transform infrared spectroscopy, weight loss, viscosity change, atomic force microscopy, and field emission scanning electron microscopy (FE-SEM). Results showed that the complex film had lower weight loss, gel content, and molecular weight deterioration than the plain PVC film. Also, surfaces of the complexes-filled films were smoother, less lumpy, and more homogeneous. These findings were obtained via the FE-SEM and light microscope images and confirmed by measuring the roughness factor. The organotin (IV) complex proved its activity in delaying the photo-degradation of PVC by several mechanisms. Ultimately, the Tin complex has effectively protected the PVC film against irradiation.

Toughening of Wood/Poly(vinyl chloride) Composites by Using Ultrafine Rubber Particles: Mechanical and Rheological Investigations

2014 ◽  
Vol 534 ◽  
pp. 25-30 ◽  
Author(s):  
Nawadon Petchwattana ◽  
Sirijutaratana Covavisaruch ◽  
Chanidapa Watkrut
Keyword(s):  
Impact Strength ◽  
Vinyl Chloride ◽  
Processing Time ◽  
Tensile Elongation ◽  
Butadiene Rubber ◽  
Elongation At Break ◽  
Plastic Composites ◽  
Poly Vinyl Chloride ◽  
Impact Modifier ◽  
The Impact

The purpose of this research is to enhance the toughness of richly-filled wood plastic composites (WPC) by using ultrafine acrylonitrile butadiene rubber (NBR) particles. The WPC was prepared by using poly (vinyl chloride) (PVC) matrix filled with Iron wood (Xylia xylocarpa) flour at 40 phr (WPC40) and 60 phr (WPC60). To enhance the impact strength, various contents of the ultrafine NBR were incorporated as an impact modifier from 1-11 phr. Experimental results indicated that the NBR toughened-WPCs were tougher than that of the unmodified ones, by increasing the tensile elongation at break. The impact strength of the WPCs modified with only 5 phr of NBR was notably enhanced around 26 and 7% for WPC40 and WPC60 respectively. Rheological results revealed that the ultrafine NBR functioned not only as an impact modifier but also as a processing aid with shorter processing time and lower melt torque.

Cationic vinyl monomer-grafted polypropylene preparation and its use as a compatibilizer for polypropylene/poly(vinyl chloride) blends

2015 ◽  
Vol 35 (3) ◽  
pp. 223-229 ◽  
Author(s):  
Guangtian Liu
Keyword(s):  
Tensile Strength ◽  
Impact Strength ◽  
Vinyl Chloride ◽  
Quaternary Ammonium ◽  
Vinyl Monomer ◽  
Polymer Surfaces ◽  
Scanning Calorimetry ◽  
Poly Vinyl Chloride ◽  
The Impact ◽  
Thermal Stability Of

Abstract Grafting polymerization is a valuable method for the modification of the chemical and physical properties of polymer surfaces. In this paper, the grafting of cationic vinyl monomer with quaternary ammonium groups, i.e., methacryloxyethyltrimethyl ammonium chloride (DMC), onto the isotactic polypropylene (iPP) granule was performed by the suspension solid-state grafting process. The technique offers new opportunities in modification of polyolefins, which has advantages of being solventless and having a lower process temperature. The grafted PP [PP-g-(St-co-DMC)] was systematically characterized by using various analytic tools including Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The FTIR spectra of the grafted iPP confirmed that DMC was successfully grafted onto the iPP backbone. The results of TGA and the hydrophilicity measurement indicated that the thermal stability of the grafted iPP was enhanced remarkably, and the hydrophilicity was also enhanced due to the addition of hydrophilic quaternary ammonium groups. Furthermore, the mechanical properties effect of PP-g-(St-co-DMC) on PP/poly(vinyl chloride) (PVC) blends was investigated. The measurements of tensile strength and impact strength indicated that the PP-g-(St-co-DMC) could remarkably enhance compatibility of PP/PVC blends. The tensile strength and the impact strength of PP/PVC blends with a concentration of PP-g-(St-co-DMC) at 4% (wt) increased up to 19.15% and 74.48%, respectively.

Influence of core-Shell structured particles on the impact resistance of poly(vinyl chloride)

2003 ◽  
Vol 14 (3-5) ◽  
pp. 232-238 ◽  
Author(s):  
Tian-Ying Guo ◽  
Guang-Liang Tang ◽  
Guang-Jie Hao ◽  
Shu-Fang Wang ◽  
Moud-Dao Song ◽  
...  
Keyword(s):  
Vinyl Chloride ◽  
Impact Resistance ◽  
Core Shell ◽  
Poly Vinyl Chloride ◽  
The Impact
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