scholarly journals Influence of polystyrene modifier on features of polyvinylchloride plastics production

2021 ◽  
Vol 4 (1) ◽  
pp. 166-171
Author(s):  
D. S. Katruk ◽  
◽  
A. S. Masyuk ◽  
V. Ye. Levytskyi ◽  
◽  
...  
Keyword(s):  
Thermal Properties ◽  
Vinyl Chloride ◽  
Polyvinyl Chloride ◽  
Nano Composites ◽  
Mechanical And Thermal Properties ◽  
Performance Properties ◽  
Nanoscale Particles ◽  
Matter Volume ◽  
Physical Modification ◽  
And Performance

The main methods of physical modification of PVC materials is the combination with other polymers, including PS plastic, and the creation of polymer (nano) composites containing metal and silicate fillers. Modification of polyvinyl chloride by polystyrene plastic leads to obtain materials with reduced degree of plasticizer release out of matter volume, adjustable elastic-plastic characteristics, and enhanced physico - mechanical and thermal properties. Physical modification of vinyl chloride polymers by other polymers or nanoscale particles of inorganic nature enables predictable affect on the morphology of these materials and directed regulate their technological and performance properties.

scholarly journals Preparation of PVC composite using reinforced Iraqi Bentoniet clay as a filler & study their mechanical and thermal properties

2012 ◽  
Vol 9 (3) ◽  
pp. 450-458
Author(s):  
Baghdad Science Journal
Keyword(s):  
Particle Size ◽  
Thermal Properties ◽  
Polyvinyl Chloride ◽  
Bentonite Clay ◽  
Mechanical And Thermal Properties ◽  
Chloride Solutions ◽  
Modified Bentonite ◽  
Coated Layer

In this study , Iraqi Bentonite clay was used as a filler for polyvinyl chloride polymer. Bentonite clay was prepared as a powder for some certain particle size ,followed by calcinations process at (300,700,900) OC ,then milled and sieved. The selected sizes were D ~75 µm and D ~150. After that polyvinyl Al-Cohool solution prepared and used as a coated layer covered the Bentonite powder before applied as a filler ,followed by drying , milling and sieving for limited recommend sizes. polyvinyl chloride solutions were prepared and adding of modified Bentonite power at certain quantities were followed .Sheet of these variables on the mechanical and thermal properties of the prepared reinforced particular polyvinyl chloride composite Experimentally, it was found that the composite prepared by adding modified Iraqi Bentonite powder , that calcined at 700 oC as a filler have an advantage in heating insulator properties by 30 from that found for PVC as it is ,and the value of stress strength exceed by three times as that for original value.

Impact of hot molding temperature and duration on braking behavior of friction material

2019 ◽  
Vol 234 (9) ◽  
pp. 1416-1424
Author(s):  
Nesrine Hentati ◽  
Mohamed Kchaou ◽  
Anne-Lise Cristol ◽  
Riadh Elleuch ◽  
Yannick Desplanques
Keyword(s):  
Thermal Properties ◽  
Friction Mechanisms ◽  
Tribological Behavior ◽  
Friction Material ◽  
Mechanical And Thermal Properties ◽  
Molding Temperature ◽  
Long Duration ◽  
Wear And Friction ◽  
And Performance ◽  
Materials Used

The manufacturing process of brake materials used for braking applications consists of a succession of steps among which the hot molding has a major impact on properties and performance of materials. In this paper, impact of hot molding temperature and duration on mechanical and thermal properties of friction materials developed with simplified formulation was investigated. Two different hot molding conditions were studied: condition 1 (low temperature associated to long duration) and condition 2 (high temperature associated to short duration). Braking behavior, thermo-mechanical phenomena and wear and friction mechanisms were also investigated. Results indicated that hot molding conditions did not significantly affect mechanical properties and tribological behavior, but they had impact on thermal properties (material molded according to condition 1, material A presented a higher thermal conductivity) and on wear mechanisms involved in the contact. In addition, results revealed that the studied hot molding conditions impacted thermal localization recorded during braking that was denser for the disc rubbed against material B (material molded according to condition 2).

scholarly journals Physical, mechanical and thermal properties of Crushed Sand Concrete containing Rubber Waste

2018 ◽  
Vol 149 ◽  
pp. 01076
Author(s):  
Guendouz Mohamed ◽  
Boukhelkhal Djamila
Keyword(s):  
Thermal Conductivity ◽  
Thermal Properties ◽  
Flexural Strength ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Bulk Density ◽  
Mechanical And Thermal Properties ◽  
The Past ◽  
Rubber Waste ◽  
And Performance

Over the past twenty years, the rubber wastes are an important part of municipal solid waste. This work focuses on the recycling of rubber waste, specifically rubber waste of used shoes discharged into the nature and added in the mass of crushed sand concrete with percentage (10%, 20%, 30% and 40%). The physical (workability, fresh density), mechanical (compressive and flexural strength) and thermal (thermal conductivity) of different crushed sand concrete made are analyzed and compared to the respective controls. The use of rubber waste in crushed sand concrete contributes to reduce the bulk density and performance of sand concrete. Nevertheless, the use of rubber aggregate leads to a significant reduction in thermal conductivity, which improves the thermal insulation of crushed sand concrete.

Thiamine hydrochloride (vitamin B1) as modifier agent for TiO2 nanoparticles and the optical, mechanical, and thermal properties of poly(vinyl chloride) composite films

RSC Advances ◽  
2016 ◽  
Vol 6 (95) ◽  
pp. 92596-92604 ◽  
Author(s):  
Shadpour Mallakpour ◽  
Marzieh Adnany Sadaty
Keyword(s):  
Optical Properties ◽  
Thermal Properties ◽  
Tio2 Nanoparticles ◽  
Vinyl Chloride ◽  
Composite Films ◽  
Vitamin B1 ◽  
Thiamine Hydrochloride ◽  
Mechanical And Thermal Properties ◽  
Poly Vinyl Chloride

In the present investigation, TiO2 nanoparticles (NPs) were used for improving the thermal, mechanical and optical properties of poly(vinyl chloride) (PVC) matrix.

scholarly journals Modified polyvinyl chloride composites with metal-containing polymer-silicate fillers

2021 ◽  
Vol 4 (1) ◽  
pp. 186-190
Author(s):  
A. S. Masyuk ◽  
◽  
D. S. Katruk ◽  
V. Ye. Levytskyi ◽  
◽  
...  
Keyword(s):  
Thermal Properties ◽  
Polyvinyl Chloride ◽  
Softening Point ◽  
Surface Hardness ◽  
Mechanical And Thermal Properties ◽  
Plastic Properties ◽  
Elastic Plastic

The influence of the nature of the metal-containing polymer-silicate fillers on morphology, surface hardness, Vicat softening point and elastic-plastic properties of PVC plasticates has been researched. The influence of polymer-silicate fillers on physic-mechanical and thermal properties and the conditions directional regulation of technological and operational properties of modified composites has been established.

Mechanical and Thermal Properties of Oil Palm Empty Fruit Bunch-Filled Unplasticized Poly (Vinyl Chloride) Composites

2005 ◽  
Vol 13 (6) ◽  
pp. 607-617 ◽  
Author(s):  
A. Abu Bakar ◽  
A. Hassan ◽  
A.F. Mohd Yusof
Keyword(s):  
Thermal Properties ◽  
Vinyl Chloride ◽  
Oil Palm ◽  
Flexural Modulus ◽  
Degradation Process ◽  
Decomposition Temperature ◽  
Natural Fibre ◽  
Mechanical And Thermal Properties ◽  
Empty Fruit Bunches ◽  
Poly Vinyl Chloride

Awareness of the advantages of natural fibres has stimulated interest in their use to reinforce polymers. One type of natural fibre that is of great relevance to Malaysia is oil palm empty fruit bunches (EFB). To produce EFB-filled unplasticized poly(vinyl chloride) (PVC) composites, PVC resin and the various additives were first dry-blended using a laboratory blender before being milled into sheets on a two-roll mill. Test specimens were then hot pressed, after which the mechanical and thermal properties were determined. Four untreated EFB fibre contents were employed, 10, 20, 30 and 40 phr. The increase in EFB fibre content resulted in an improvement in flexural modulus at the expense of impact strength and flexural strength. The incorporation of EFB slightly enhanced the glass transition temperature but it decreased the thermal stability of the composites, evidenced by a decrease in decomposition temperature and a change in the degradation process from two to three stages.

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