ISSN:
1435-1536
Schlagwort(e):
Ureido silane
;
E-glass fiber
;
non-aqueous treatment
;
coupling agent
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Chemie und Pharmazie
,
Maschinenbau
Notizen:
Abstract There is a cogent body of evidence showing that the physical properties of glass reinforced plastics (GRP) can be vastly improved, by pre-treatment of the glass fibers with appropriate coupling agents or sizes. This is the fourth part of a research series investigating different silanes with non-aqueous solvents and their effect upon silane deposition onto glass fibers. A sample of E-glass fibers were treated with a 2% solution of a ureido silane in ethanol. (ex Ahlström) for 16 hours at 23° ±2°C. The fibers were washed with ethanol and dried at 120°C, and then subsequently washed with a series of solvents and dried at 120°C to ensure removal of all solvents. The sequential solvent wash was used to determine the amount of silane which was physisorbed as opposed to chemisorbed. The treated fibers were examined by XPS, diffuse reflectance FTIR, TGA & SEM. It has been shown previously that the choice of washing solvents and the drying conditions employed are of the utmost importance in removal of physisorbed silane. A certain amount of silane is absorbed onto the glass surface during the treatment the amount being determined by the interaction between solvent, silane and the glass surface. SEM photomicrographs show the silane networks between adjacent fibers, which are still in place after the modification, indicating large amounts of silane available for forming interpenetrating networks with polymers.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF01188930
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