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Title: New generation precipitated silica for elastomer reinforcement


No abstract prepared.

; ; ;  [1]
  1. (UCIN)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Org.:
OSTI Identifier:
Resource Type:
Resource Relation:
Conference: Fall 170th Technical Meeting of the Rubber Division, American Chemical Society;October 10-12, 2006;Cincinnati, OH
Country of Publication:
United States

Citation Formats

Schaefer, D.W., Kohls, D.J., Feinblum, E., and Vorobiev, A. New generation precipitated silica for elastomer reinforcement. United States: N. p., 2007. Web.
Schaefer, D.W., Kohls, D.J., Feinblum, E., & Vorobiev, A. New generation precipitated silica for elastomer reinforcement. United States.
Schaefer, D.W., Kohls, D.J., Feinblum, E., and Vorobiev, A. Thu . "New generation precipitated silica for elastomer reinforcement". United States. doi:.
title = {New generation precipitated silica for elastomer reinforcement},
author = {Schaefer, D.W. and Kohls, D.J. and Feinblum, E. and Vorobiev, A.},
abstractNote = {No abstract prepared.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Feb 22 00:00:00 EST 2007},
month = {Thu Feb 22 00:00:00 EST 2007}

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  • Structure and properties of a series of modified polydimethylsiloxane (PDMS) elastomers reinforced by {ital in situ} generated silic particles were investigated. The PDMS elastomer was modified by systematically varying the molecular weight between reactive groups incorporated into the backbone. Tetraethoxysilane (TEOS) and partial hydrolyzate of TEOS were used to generate silic particles. Chemistry and phase structure of the materials were investigated by {sup 29}Si magic angle spinning nuclear magnetic resonance spectroscopy and swelling experiments.
  • Iron oxide particles were blended into samples of cis-1,4-polybutadiene and polyisobutylene, and both the unfilled polymers and the resulting polymer-filler mixture were cured with benzoyl peroxide. The filled networks were cloudy, but strips extracted using a toluene-hydrochloric acid mixture became as clear as the unfilled networks, suggesting removal of the filler particles. Equilibrium swelling and stress-strain measurements in elongation were carried out the unfilled elastomer and on the filled ones, both before and after extraction. There were no significant differences between the stress-strain isotherms and degrees of equilibrium swelling of the unfilled networks and the corresponding properties of the previously-filledmore » networks after the filler particles were removed. This suggests that for these systems, the bonding between the filler particles and the polymer chains is physical rather than chemical.« less
  • No abstract prepared.
  • Cushions prepared with fillers pretreated with wetting agents were much easier to process in all stages of production except for sheeting prior to bin aging. However, the use of these pre-wetted fillers resulted in an unacceptable increase in compression set. The processability of cushions containing fillers integrally treated with either wetting or coupling agents was no different from that of cushions containing untreated fillers. However, cushions prepared with the integral addition of a vinyl coupling agent did not show the increase in compression set that was so prevalent in the cushions made with pre-wetted fillers. This suggests that pretreating themore » fillers with coupling agents may improve the processability without cost to the final cushion properties. The data collected indicated that the use of Hi Sil with these surface modifiers appears to have no effect apart from altering the total filler loading. Y1587 not only softens the final cushions, it also appears to contribute significantly to the compression set. The ease in handling pretreated fillers could eliminate the need for a processing aid like Y1587, thus providing a possible means for reducing compression set.« less
  • Abstract not provided.