Modified precipitated silicas as polyurethane fillers

Krysztafkiewicz, Andrzej; Maik, Marek

doi:10.1007/bf01425032

Cited by 15 publications

(3 citation statements)

References 9 publications

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“…Phenylmercury oleinate (Bayer, Germany) was employed as a catalyst. The procedure for the synthesis, its conditions, and the way in which silicate was introduced have been described previously [17]. The physicomechanical properties of urethane elastomers lled with modi ed and unmodi ed sodium-aluminium silicate were determined.…”

Section: Methodsmentioning

confidence: 99%

Silane-modified sodium–aluminium silicates — fillers used in polyurethane elastomers

Werner

Krysztafkiewicz

Jesionowski

et al. 2001

Journal of Adhesion Science and Technology

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Sodium-aluminium silicates of a high degree of dispersion were obtained. Studies on the surface modi cation of sodium-aluminium silicates using silane coupling agents are described. The best modi ers, which induced a change of the silicate surface from a hydrophilic to a hydrophobic one, were selected. Physicochemical analyses of the obtained silicates were performed. The methods of evaluating the degree of surface modi cation of the silicate are presented. Attempts were made to employ the unmodi ed and modi ed sodium-aluminium silicates as llers in polyurethane elastomers. The introduction of sodium-aluminium silicate into urethane elastomer induced increases in composite parameters such as tensile strength, relative elongation, and hardness. The most pronounced reinforcing effects were observed with urethane elastomers lled with sodium-aluminium silicate modi ed with an aminosilane (A-1120).

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Section: Methodsmentioning

confidence: 99%

Silane-modified sodium–aluminium silicates — fillers used in polyurethane elastomers

Werner

Krysztafkiewicz

Jesionowski

et al. 2001

Journal of Adhesion Science and Technology

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“…The urethane polymer was obtained by a two-stage pre-polymer technique 31 . The pre-polymer was produced in an additive reaction of toluene diisocyanate with polyoxypropylene glycol in amounts corresponding to the molar ratio of NCO:OH functional groups (equal to 2:1).…”

Section: Methodsmentioning

confidence: 99%

Silane Modified Fillers for Reinforcing Polymers

Domka

Krysztafkiewicz

Kozak

2002

Polymers and Polymer Composites

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Some white natural fillers (kaolin and talc) and synthetic mineral ones (precipitated silica, sodium-aluminium silicate, zinc silicate, calcium silicate) together with waste materials (cement dusts and post-fluor silicas) were subjected to surface modification and characterised. Various types of silane coupling agents (amino-, mercapto-, methacryloxy- and ureidosilanes) were used for surface modification. The modified fillers were mixed with butadiene-styrene rubber, polyurethane and PVC. Good physico-mechanical properties were obtained for PVC containing talcs and kaolins modified with methacryloxy– and ureidosilanes. The strength of polyurethanes was increased most by modification of the fillers with mercapto- and aminosilanes.

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“…Properties of the lled polyurethanes re ect the chemical structure of the polymer, the type of ller (dispersive, brous), phase composition, polymer adhesion to ller surface, forming conditions, etc [2,3].…”

Section: Introductionmentioning

confidence: 99%

Silicas modified with amino- and mercaptosilanes - fillers of urethane elastomers

Jesionowski¹,

Krysztafkiewicz²

2001

Composite Interfaces

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Determination of the optimum composition of a urethane-silica mixture, which would form crosslinked products, presented a signi cant problem in these studies. The unmodi ed silica was dosed at various ratios as compared to urethane elastomer: 2.5, 5.0, 7.5 and 10.0 phr. The optimum amount of the ller (precipitated silica) was found to be 5 phr and this amount of silica was subjected to modi cation with 3 and 5 weight parts of aminosilane U-15 or mercaptosilane A-189, per 100 weight parts of SiO 2 .

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Modified precipitated silicas as polyurethane fillers

Cited by 15 publications

References 9 publications

Silane-modified sodium–aluminium silicates — fillers used in polyurethane elastomers

Silane-modified sodium–aluminium silicates — fillers used in polyurethane elastomers

Silane Modified Fillers for Reinforcing Polymers

Silicas modified with amino- and mercaptosilanes - fillers of urethane elastomers

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