mechanism for peroxide cross-linking of epdm rubber by india
Mechanism for Peroxide Cross-Linking of EPDM Rubber from
Detailed information about the chemical role of the third monomer 5-ethylidene-2-norbonene (ENB) in EPDM during peroxide cross-linking has been obtained by use of MAS 13C NMR spectroscopy and 1H NMR T2 relaxometry. Advanced 13C NMR techniques like INADEQUATE and TOCSY applied to a special EPDM grade with 13C-labeled ENB reveal a large number of new aliphatic and olefinic signals as well as ...
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Mechanism of Peroxide Cross‐Linking of EPDM Rubber - van
The results of three experimental studies, i.e. GC‐MS of peroxide‐cross‐linked alkene/alkane mixtures, 13 C NMR of peroxide‐cured, 13 C‐labeled 2‐ethylidene‐5‐norbornene ‐ ethylene‐propylene‐diene‐monomer (EPDM) and EPR of peroxide curing of EPDM, are combined, yielding a more accurate description of the mechanism of peroxide cure of EPDM. Both alkyl and allyl macro‐radicals are formed via H‐abstraction from the EPM main chain and the residual diene unsaturation ...
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Mechanism of Peroxide Cross‐Linking of EPDM Rubber
Request | Mechanism of Peroxide Cross‐Linking of EPDM Rubber | The results of three experimental studies, i.e. GC-MS of peroxide-cross-linked alkene/alkane mixtures, 13C NMR of peroxide ...
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Investigation of peroxide crosslinking of EPDM rubber by
Chapter 4 Mechanism of peroxide crosslinking of EPDM rubber investigated by solid-state NMR 4.1 Introduction 4.2 Experimental section 4.2.1 Sample composition and preparation 4.2.2 NMR techniques 4.2.2.1 13C NMR spectroscopy 4.2.2.2 1D INADEQUATE 4.2.2.3 1H NMR relaxometry 4.3 Results and discussion
Send InquiryMechanism of Peroxi de
veloped VNB-EPDM polymers [5,6]. The mechanism of peroxide crosslinking of EPDM rubber has been reviewed in refer-ences 7 and 8 and the subsequent practical consequences in references 9 and 10. The basic steps in the generally accepted mech-anism of peroxide cure of EPDM are pre-sented in Figure2. The chain of free-radical
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Mechanism of Peroxide Crosslinking of EPDM Rubber
Polymerization of ethylene, propylene, and a nonconjugated diene results in obtaining ethylene propylene diene monomer (EPDM) rubber having a saturated polymer backbone and a very low content of ...
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Mechanism of Peroxide Vulcanization of Elastomers | Rubber
In this work benzoyl peroxide was used to cure natural rubber; similar acyl peroxides together with more recently discovered, less active, and more convenient dialkyl peroxides have since this time been used to crosslink a very large number of polymers.
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Mechanism of Peroxide Crosslinking of EPDM Rubber
abstract = "The results of three experimental studies, i.e. GC-MS of peroxide-crosslinked alkene/alkane mixtures, C-13 NMR of peroxide-cured, C-13-labeled ENB-EPDM and EPR of peroxide curing of EPDM, are combined, yielding a more accurate description of the mechanism of peroxide cure of EPDM.
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EPR study of persistent free radicals in cross-linked EPDM
Peroxide-initiated cross-linking of EPDM rubbers proceeds via a radical mechanism and leads to the intermediate formation of two types of relatively stable allyl radicals. Allyl radicals can be either formed directly by reaction with the initiator radicals, or through the reaction with polymer backbone radicals.
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Peroxide cured EPDM | Rubber Technology
EPDM can be cured with sulphur and peroxide, depending on the requirements of the application. Compared with sulphur cured EPDM, peroxide cured EPDM compounds have a better chemical and thermal resistance. Where peroxide cured EPDM can resist a temperature up to 150 C (300 F), sulphur cured EPDM can only resist temperatures up to 120 C (250 F).
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Mechanism for Peroxide Cross-Linking of EPDM Rubber from
Detailed information about the chemical role of the third monomer 5-ethylidene-2-norbonene (ENB) in EPDM during peroxide cross-linking has been obtained by use of MAS 13C NMR spectroscopy and 1H NMR T2 relaxometry. Advanced 13C NMR techniques like INADEQUATE and TOCSY applied to a special EPDM grade with 13C-labeled ENB reveal a large number of new aliphatic and olefinic signals as well as
Send InquiryMechanism of Peroxide Cross‐Linking of EPDM Rubber - van
The results of three experimental studies, i.e. GC‐MS of peroxide‐cross‐linked alkene/alkane mixtures, 13 C NMR of peroxide‐cured, 13 C‐labeled 2‐ethylidene‐5‐norbornene ‐ ethylene‐propylene‐diene‐monomer (EPDM) and EPR of peroxide curing of EPDM, are combined, yielding a more accurate description of the mechanism of peroxide cure of EPDM. Both alkyl and allyl macro‐radicals are formed via H‐abstraction from the EPM main chain and the residual diene unsaturation
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Investigation of peroxide crosslinking of EPDM rubber by
Chapter 4 Mechanism of peroxide crosslinking of EPDM rubber investigated by solid-state NMR 4.1 Introduction 4.2 Experimental section 4.2.1 Sample composition and preparation 4.2.2 NMR techniques 4.2.2.1 13C NMR spectroscopy 4.2.2.2 1D INADEQUATE 4.2.2.3 1H NMR relaxometry 4.3 Results and discussion
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Mechanism of Peroxide Cross‐Linking of EPDM Rubber
Request | Mechanism of Peroxide Cross‐Linking of EPDM Rubber | The results of three experimental studies, i.e. GC-MS of peroxide-cross-linked alkene/alkane mixtures, 13C NMR of peroxide
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Mechanism for peroxide cross-linking of EPDM rubber
Mechanism for peroxide cross-linking of EPDM rubber from MAS13C NMR spectroscopy Article (Available) in Macromolecules · November 2009 with 75 Reads How we measure 'reads'
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Mechanism of Peroxide Crosslinking of EPDM Rubber
Mechanism of Peroxide Crosslinking of EPDM Rubber. powerful tool to enhance our understanding of the mechanism of peroxide cross-linking of (branched) alkanes. of Peroxide Cross‐Linking
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Mechanism of Peroxide Crosslinking of EPDM Rubber
abstract = "The results of three experimental studies, i.e. GC-MS of peroxide-crosslinked alkene/alkane mixtures, C-13 NMR of peroxide-cured, C-13-labeled ENB-EPDM and EPR of peroxide curing of EPDM, are combined, yielding a more accurate description of the mechanism of peroxide cure of EPDM.
Send InquiryMechanism of Peroxi de
veloped VNB-EPDM polymers [5,6]. The mechanism of peroxide crosslinking of EPDM rubber has been reviewed in refer-ences 7 and 8 and the subsequent practical consequences in references 9 and 10. The basic steps in the generally accepted mech-anism of peroxide cure of EPDM are pre-sented in Figure2. The chain of free-radical
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