scholarly journals PENGARUH PELARUT (ETIL BENZENA), PERBANDINGAN STYRENE BUTADIENE RUBBER (SBR) TERHADAP STIREN, DAN JUMLAH INISIATOR (BPO) PADA PEMBUATAN HIGH IMPACT POLYSTYRENE (HIPS)

2010 ◽  
Vol 2 (2) ◽  
Author(s):  
Dwi Wahyuni
Keyword(s):  
Impact Strength ◽  
High Heat ◽  
High Impact ◽  
Styrene Butadiene Rubber ◽  
Ethyl Benzene ◽  
Butadiene Rubber ◽  
High Impact Polystyrene ◽  
Aerospace Material ◽  
Styrene Butadiene ◽  
The Impact

High impact polystyrene (HIPS) is the widely used material now, and also for the aerospace material as a communication instrument system and an electrical insulation. In order to produce HIPS, there are a view method which can be executed. In this case, the research is executed by the copolymerization processes of styrene butadiene rubber (SBR) solution in styrene. Variables which influence to the result properties (HIPS) are the SBR to styrene ratio, the solvent (ethyl benzene), the benzoyl peroxide initiator (BPO). The properties of the product are tensile strength, impact strength, softening point, melting point and the hardness. The result showed that the properties of the HIPS product was near of the HIPS high heat. The optimal processes condition was the solvent to the styrene monomer ratio was 0.05492, the SBR to the styrene ratio was 0.1236 and the BPO to the styrene ratio was 0,0003. The properties of the HIPS product were: the impact strength was (519-1215) N per cm, the tensil strength not more than was 106 N per cm, the elongation was (36-54) percent and the hardness was (65-69) shore A. This properties achieved at the mixing polymerization processes 4 scale in 11-12 hours, the early mixing at 4 scale 1 hours, the cutting chain 2 drops.

Mechanical properties and morphologies of polypropylene composites synergistically reinforced-toughened by styrene–butadiene rubber and graphene oxide nanosheets

2019 ◽  
Vol 33 (3) ◽  
pp. 413-431
Author(s):  
Zhengjun Wang ◽  
Yi Guo ◽  
Lei Yan ◽  
Jun Bian ◽  
Hongcai Liu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Graphene Oxide ◽  
Impact Strength ◽  
Mechanical Analysis ◽  
Styrene Butadiene Rubber ◽  
Differential Scanning Calorimetric ◽  
Butadiene Rubber ◽  
Β Phase ◽  
Styrene Butadiene ◽  
The Impact

Chemically reduced graphene (C- rGO) nanosheets were first prepared from graphene oxide (GO), and then the polypropylene (PP) composites synergistically reinforced–toughened by styrene–butadiene rubber (SBR), and C- rGO nanosheets were fabricated via melt blending. The mechanical properties of PP can be considerably improved by synergistically filling with C- rGO nanosheets and SBR, especially for the notched Izod impact strength (IS). The results from the X-ray diffraction, polarizing optical micrographs, scanning electron microscope, differential scanning calorimetric, dynamic mechanical analysis, and thermogravimetric analysis measurements reveal that: (1) the β-phase crystal structure of the PP is formed when the C- rGO and SBR are synergistically filled with PP and its formation plays a role for the enhancement of the impact strength for PP/SBR/C- rGO composites; (2) the dispersion of the C- rGO and SBR in the PP/SBR/C- rGO composites is homogeneous, indicating that synergistic incorporating method decreases the aggregation of nanosheets and thus increases the sites for dissipation of shock for impact energy in the PP/SBR/C- rGO composites; and (3) the thermal analysis shows high thermal stability for the PP/SBR/C- rGO composites.

scholarly journals Analysis of the Impact on the Mechanical Properties of Modification of Oligohydroxyethers in Organic Solvent Solution with Rubbers

Polymers ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 519
Author(s):  
Vitalii Bezgin ◽  
Agata Dudek ◽  
Adam Gnatowski
Keyword(s):  
Mechanical Properties ◽  
Scientific Paper ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Molecular Weights ◽  
Wide Range ◽  
Strength Tests ◽  
Materials Used ◽  
Styrene Butadiene ◽  
The Impact

This paper proposes and presents the chemical modification of linear hydroxyethers (LHE) with different molecular weights (380, 640, and 1830 g/mol) with the addition of three types of rubbers (polysulfide rubber (PSR), polychloroprene rubber (PCR), and styrene-butadiene rubber (SBR)). The main purpose of choosing this type of modification and the materials used was the possibility to use it in industrial settings. The modification process was conducted for a very wide range of modifier additions (rubber) per 100 g LHE. The materials obtained in the study were subjected to strength tests in order to determine the effect of the modification on functional properties. Mechanical properties of the modified materials were improved after the application of the modifier (rubber) to polyhydroxyether (up to certain modifier content). The most favorable changes in the tested materials were registered in the modification of LHE-1830 with PSR. In the case of LHE-380 and LHE-640 modified in cyclohexanol (CH) and chloroform (CF) solutions, an increase in the values of the tested properties was also obtained, but to a lesser extent than for LHE-1830. The largest changes were registered for LHE-1830 with PSR in CH solution: from 12.1 to 15.3 MPa for compressive strength tests, from 0.8 to 1.5 MPa for tensile testing, from 0.8 to 14.7 MPa for shear strength, and from 1% to 6.5% for the maximum elongation. The analysis of the available literature showed that the modification proposed by the authors has not yet been presented in any previous scientific paper.

scholarly journals Hybrid Interface in Sepiolite Rubber Nanocomposites: Role of Self-Assembled Nanostructure in Controlling Dissipative Phenomena

Nanomaterials ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 486 ◽  
Author(s):  
Elkid Cobani ◽  
Irene Tagliaro ◽  
Marco Geppi ◽  
Luca Giannini ◽  
Philippe Leclère ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Rubber Matrix ◽  
Styrene Butadiene Rubber ◽  
Nuclear Magnetic Resonance Analysis ◽  
Butadiene Rubber ◽  
Resonance Analysis ◽  
Self Assembled ◽  
Styrene Butadiene ◽  
The Impact

Sepiolite (Sep)–styrene butadiene rubber (SBR) nanocomposites were prepared by using nano-sized sepiolite (NS-SepS9) fibers, obtained by applying a controlled surface acid treatment, also in the presence of a silane coupling agent (NS-SilSepS9). Sep/SBR nanocomposites were used as a model to study the influence of the modified sepiolite filler on the formation of immobilized rubber at the clay-rubber interface and the role of a self-assembled nanostructure in tuning the mechanical properties. A detailed investigation at the macro and nanoscale of such self-assembled structures was performed in terms of the organization and networking of Sep fibers in the rubber matrix, the nature of both the filler–filler and filler–rubber interactions, and the impact of these features on the reduced dissipative phenomena. An integrated multi-technique approach, based on dynamic measurements, nuclear magnetic resonance analysis, and morphological investigation, assessed that the macroscopic mechanical properties of clay nanocomposites can be remarkably enhanced by self-assembled filler structures, whose formation can be favored by manipulating the chemistry at the hybrid interfaces between the clay particles and the polymers.

High-impact Composites of Polypropylene and Nitrile Butadiene Rubber with Improved Compatibility of the Polymer Components, Obtained by Melt Reactive Compounding. Part 2: The Influence of the Composition and Concentration of the Polymer Compatibiliser on the Impact Strength of the Composites

2018 ◽  
Vol 45 (4) ◽  
pp. 157-160
Author(s):  
Yu.M. Kazakov ◽  
A.M. Volkov ◽  
I.G. Ryzhikova ◽  
S.I. Vol'fson
Keyword(s):  
Maleic Anhydride ◽  
Impact Strength ◽  
Functional Groups ◽  
Aromatic Amine ◽  
High Impact ◽  
Vinyl Monomers ◽  
Butadiene Rubber ◽  
Nitrile Butadiene Rubber ◽  
Monoethylene Glycol ◽  
The Impact

We have studied the impact strength of composites of structural designation containing polypropylene (PP) and 23 wt% nitrile butadiene rubber BNKS-18AMN, obtained by peroxide modification in the presence of polar vinyl monomers: maleic anhydride, its polyester with monoethylene glycol (MEG), and a complex of MEG with aromatic amine antioxidant Diaphene FP (DFP). The composites also contained compatibilisers based on PP or its blends with 10 wt% BNKS-18AMN, modified with analogous peroxide modifying systems. Measurements of impact strength were conducted at temperatures of + 23°C and −30°C; the concentration range of all tested compatibilisers in the composites was 3–20 wt%. The dependence of the impact strength on the content of compatibilisers at both temperatures has a complex extremal nature. It was established that, of all the tested composites, the highest level of impact strength and a relatively slow fall in its values are ensured by a compatibiliser containing complex coagent MEG + DFP. The obtained results may be explained by the increased volume and more homogeneous structure of the transition interphase layer formed under these compounding conditions owing to the specific and effective nature of interaction of the MEG molecules with functional groups of the nitrile butadiene rubber in the interphase region of these composites, promoted by the presence of the secondary aromatic amine complexly bound with the MEG.

Influence of Polymer Latex on the Interlayer Bonding Performance of Cement Concrete

2014 ◽  
Vol 1065-1069 ◽  
pp. 1780-1783 ◽  
Author(s):  
Tai Xiu Yang ◽  
Jing Zhu
Keyword(s):  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Test Results ◽  
Cement Concrete ◽  
Bonding Performance ◽  
Interface Agent ◽  
Bonding Properties ◽  
Interlayer Bonding ◽  
Styrene Butadiene ◽  
The Impact

Adding polymer into cement concrete is used to increase the interlayer bonding performance. The impact of polymer on the interlayer bonding performance was studied by shear strength and tensile strength test. The mix design of the interface agent was optimized through the tensile bending tests of different fiber and polymer dosage. The impact of casting methods and interface agent mix was studied through tests. The test results show that: adding organic fiber and polymer into cement concrete could significantly increase the interlayer bond strength. The interface agent of SBR (styrene-butadiene rubber) latex modified cement paste has better tensile bonding properties. When the ratio of cement to DB-1 latex is 3:2, it will effectively increase the interlayer bonding performance of cement concrete.

Sign in / Sign up

Export Citation Format

Share Document