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Details van artikel 34 van 83 gevonden artikelen
| Titel: |
IMPROVEMENT OF QUALITY OF RECLAIMED RUBBER BY MECHANICAL-CHEMICAL SYNTHESES |
| Auteur: |
Minodora Leca I. F. Runcan |
| Verschenen in: |
Analele Universitatii Bucuresti. Chimie |
| Paginering: | Jaargang XI (2002) nr. I pagina's 91-96 |
| Jaar: |
2002 |
| Inhoud: |
Properties of rubber reclaimed by swelling and mechanical destruction were improved bysyntheses realized under the action of mechanical forces. Special recipes of poly( -methylstyrene-co-butadiene) and natural rubber, without fillers, were used to eliminate the filer’s effect.Syntheses were realized by rolling on the first rubber in polymer/monomer (styrene) andpolymer/polymer (natural rubber) binary systems. Syntheses using monomer realized at 600Cresult in polymerisation of styrene, while at 200C in grafting of polystyrene on rubber andstyrene oligomers. The obtained compounds preserve their high elasticity and have increasedtensile strength. Syntheses using natural rubber give products with higher tensile strength andelongation at break, due to the compoundation of the two polymers and grafting of natural rubberon the synthetic one. The compound synthetic/natural rubber = 3/2 gives, with styrene at 200C,compounds with higher tensile strength and elongation at break, resistant to crude oil and itsderivative. DSC curve of the obtained materials shows an increase of glass transition temperatureand a widening of its range, while TGA ones a slight increase of temperature at which thermaldegradation starts. |
| Uitgever: |
Ars Docendi Publishing House (provided by DOAJ) |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 34 van 83 gevonden artikelen
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