The Mechanical Properties of Plasticized PVC Processed in an Extruder with a Modified Feed Zone

2015 ◽  
Vol 30 (3) ◽  
pp. 359-365 ◽  
Author(s):  
J. W. Sikora ◽  
B. Samujlo ◽  
A. Stasiek ◽  
A. Tor-Świątek
Keyword(s):  
Mechanical Properties ◽  
Plasticized Pvc ◽  
Feed Zone

scholarly journals The Effects of Epoxidized Acrylated Castor Oil (EACO) on Soft Poly (vinyl chloride) Films as a Main Plasticizer

2018 ◽  
Vol 20 (4) ◽  
pp. 13-19 ◽  
Author(s):  
Fei Song ◽  
Haoyu Xia ◽  
Puyou Jia ◽  
Meng Zhang ◽  
Lihong Hu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Hydrogen Peroxide ◽  
Solvent Extraction ◽  
Castor Oil ◽  
Second Step ◽  
H Nmr ◽  
Plasticized Pvc ◽  
Poly Vinyl Chloride ◽  
Nmr Techniques

Abstract In this work, an environmentally friendly type plasticizer was introduced. The synthesis consisted of two steps. In the first step, castor oil (CO) was acrylated and then the acrylated castor oil (ACO) was epoxidized with the presence of formic acid and hydrogen peroxide in the second step. The epoxidized acrylated castor oil (EACO) was characterized by FTIR and 1H-NMR techniques. The EACO was used as a main plasticizer to obtain plasticized PVC materials and compared with DOP. The results showed that EACO improved polyvinyl-chloride (PVC) plasticization performance and reduced Tg from 81.06°C to 1.40°C. Plasticized PVC materials with EACO showed similar mechanical properties and better thermal stability than DOP. EACO had better volatility stabilities, migration and solvent extraction in PVC than DOP. EACO can be used to replace DOP to prepare soft films.

Mechanical Properties and Morphology of Plasticized Poly(vinyl chloride) Nanocomposites Filled with Nanosilica

2012 ◽  
Vol 488-489 ◽  
pp. 633-637 ◽  
Author(s):  
Saowaroj Chuayjuljit ◽  
Nuttapol Sukkasem
Keyword(s):  
Mechanical Properties ◽  
Vinyl Chloride ◽  
Dependent Manner ◽  
Melt Mixing ◽  
Sem Images ◽  
Tear Strength ◽  
Nano Sio2 ◽  
Plasticized Pvc ◽  
Poly Vinyl Chloride ◽  
Dose Dependent

The mechanical properties (tensile properties, tear strength) and morphology of plasticized poly(vinyl chloride) (PVC) nanocomposites filled with varied loadings of nanosilica (nano-SiO2) (3-9 phr) were investigated. It is found that the addition of nano-SiO2 into the plasticized PVC by melt mixing process results in the increase in the Young’s modulus and tear strength, but the decrease in the tensile strength and elongation at break in a dose dependent manner. The SEM micrographs show ductile fractured surfaces for the neat plasticzed PVC and for the nanocomposites with low nano-SiO2 loadings (3 and 5 phr). As the nano-SiO2 loadings are 7 and 9 phr, SEM images illustrate smoother surfaces, caused by the reduction in the flexibility of the plasticized PVC nanocomposites.

scholarly journals THERMO- AND LIGHT STABILIZING ACTIVITY OF VINYLOXYCLOPROPANE ADDUCTS WITH THIOLS IN THE COMPOSITIONS BASED ON PVC

2021 ◽  
Vol 2 (1(82)) ◽  
pp. 49-54
Author(s):  
R. Shahnazarli ◽  
N. Ishenko ◽  
A. Guliyev ◽  
G. Ramazanov ◽  
A. Aliyeva ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Stearic Acid ◽  
High Temperatures ◽  
Negative Impact ◽  
Plasticized Pvc ◽  
Light Stability ◽  
Biocidal Properties ◽  
Pvc Compositions ◽  
Acid Salts

During exploitation of PVC products, the negative impact of high temperatures and light, and also the destructive influence of various microorganisms, leads to the deterioration of physical-mechanical properties and change of products painting. For prevention of the dehydrochlorination process of PVC, it is necessary to use the effective complex stabilizers, including biostabilizers, differing with their high processability and simultaneously possessing biocidal properties.  In this work the results of investigations of influence of the synthesized sulphur-containing epoxycyclopropanes as stabilizing additives for prevention of the dehydrochlorination process of the compositions based on plasticized PVC have been presented. The influence of these compounds as co-stabilizers in the composition of complex stabilizers – stearates Ca (CaSt2) and Zn (ZnSt2) on thermo- and light stability of PVCcompositions and also on their physical-mechanical and exploitation indices has been studied. It has been established the synthesized epoxy- and cyclopropane-containing mono- and disulphides jointly with stearic acid salts form the synergic mixtures, which can improve the physical-mechanical properties of PVC compositions, their thermal and light stability.

Plasticized PVC graphene nanocomposites: Morphology, mechanical, and dynamic mechanical properties

2017 ◽  
Vol 58 (S1) ◽  
pp. E104-E113 ◽  
Author(s):  
H. Akhina ◽  
M.R. Gopinathan Nair ◽  
Nandakumar Kalarikkal ◽  
K.P. Pramoda ◽  
Tan Hui Ru ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Dynamic Mechanical Properties ◽  
Graphene Nanocomposites ◽  
Dynamic Mechanical ◽  
Plasticized Pvc

Phase Transformations in Ti-7w/oMo-3w/oMe Alloy

1974 ◽  
Vol 32 ◽  
pp. 514-515
Author(s):  
S. Fujishiro
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Transmission Electron Microscopy ◽  
Tensile Strength ◽  
Mechanical Processing ◽  
Ray Method ◽  
X Ray ◽  
Transmission Electron ◽  
Water Quench ◽  
Alpha Beta

The mechanical properties of three titanium alloys (Ti-7Mo-3Al, Ti-7Mo- 3Cu and Ti-7Mo-3Ta) were evaluated as function of: 1) Solutionizing in the beta field and aging, 2) Thermal Mechanical Processing in the beta field and aging, 3) Solutionizing in the alpha + beta field and aging. The samples were isothermally aged in the temperature range 300° to 700*C for 4 to 24 hours, followed by a water quench. Transmission electron microscopy and X-ray method were used to identify the phase formed. All three alloys solutionized at 1050°C (beta field) transformed to martensitic alpha (alpha prime) upon being water quenched. Despite this heavily strained alpha prime, which is characterized by microtwins the tensile strength of the as-quenched alloys is relatively low and the elongation is as high as 30%.

Effects of cooling rate on the mechanical properties of dual phase treated vanadium steels

1983 ◽  
Vol 41 ◽  
pp. 220-221
Author(s):  
L.J. Chen ◽  
H.C. Cheng ◽  
J.R. Gong ◽  
J.G. Yang
Keyword(s):  
Mechanical Properties ◽  
Cooling Rate ◽  
Automobile Industry ◽  
High Strength ◽  
Weight Percent ◽  
Low Alloy Steels ◽  
Dual Phase ◽  
Resource Requirement ◽  
Alloy Steels ◽  
Potential Weight

For fuel savings as well as energy and resource requirement, high strength low alloy steels (HSLA) are of particular interest to automobile industry because of the potential weight reduction which can be achieved by using thinner section of these steels to carry the same load and thus to improve the fuel mileage. Dual phase treatment has been utilized to obtain superior strength and ductility combinations compared to the HSLA of identical composition. Recently, cooling rate following heat treatment was found to be important to the tensile properties of the dual phase steels. In this paper, we report the results of the investigation of cooling rate on the microstructures and mechanical properties of several vanadium HSLA steels.The steels with composition (in weight percent) listed below were supplied by China Steel Corporation: 1. low V steel (0.11C, 0.65Si, 1.63Mn, 0.015P, 0.008S, 0.084Aℓ, 0.004V), 2. 0.059V steel (0.13C, 0.62S1, 1.59Mn, 0.012P, 0.008S, 0.065Aℓ, 0.059V), 3. 0.10V steel (0.11C, 0.58Si, 1.58Mn, 0.017P, 0.008S, 0.068Aℓ, 0.10V).

Lattice Imaging of Grain Boundaries in Ceramics

1977 ◽  
Vol 35 ◽  
pp. 114-115
Author(s):  
D. R. Clarke ◽  
G. Thomas
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
Silicon Nitride ◽  
Grain Boundaries ◽  
High Temperature Strength ◽  
Current Interest ◽  
Lattice Imaging ◽  
Special Significance ◽  
Structural Applications ◽  
Refractory Ceramics

Grain boundaries have long held a special significance to ceramicists. In part, this has been because it has been impossible until now to actually observe the boundaries themselves. Just as important, however, is the fact that the grain boundaries and their environs have a determing influence on both the mechanisms by which powder compaction occurs during fabrication, and on the overall mechanical properties of the material. One area where the grain boundary plays a particularly important role is in the high temperature strength of hot-pressed ceramics. This is a subject of current interest as extensive efforts are being made to develop ceramics, such as silicon nitride alloys, for high temperature structural applications. In this presentation we describe how the techniques of lattice fringe imaging have made it possible to study the grain boundaries in a number of refractory ceramics, and illustrate some of the findings.

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