The relation between macro- and micro-dispersion of silica filler in rubber matrix

Jungmin  Jin; Wisut  Kaewsakul; Jacobus W.M. Noordermeer; Wilma K. Dierkes; Anke  Blume

The relation between macro- and micro-dispersion of silica filler in rubber matrix

Jungmin Jin, Wisut Kaewsakul, Jacobus W.M. Noordermeer, Wilma K. Dierkes, Anke Blume

Elastomer Technology and Engineering

Research output: Contribution to conference › Paper

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Abstract

The dispersion of fillers in elastomers can be discriminated into two categories based on the dimensions of the filler clusters: macro- (2 to 100 μm) and micro- (smaller than 2 μm) dispersion. Both dispersion types are determining the final properties of the composite, but the micro-dispersion of fillers is crucial for good reinforcement of the rubber. Two basic dispersion mechanisms are proposed in literature for carbon black: agglomerate rupture and onion peel model. These filler dispersion mechanisms imply that micro-dispersion occurs only after agglomerate fragmentation of fillers, and that therefore these processes are strongly related. For silica fillers, Blume and Uhrlandt proposed a specific micro-dispersion mechanism: The polymer firstly penetrates into the voids of the agglomerates, followed by polymer chains pulling off fragments from the larger agglomerates under shearing conditions. This mechanism suggests that micro- and macro-dispersion of silica are independent.
In this study, the relation between micro- and macro-dispersion of silica in a rubber matrix was investigated. Different degrees of dispersion were achieved by variation of the mixing parameters (silanization temperature, time) and the amount of coupling agent. The degree of micro- and macro-dispersion was analyzed by measuring the Payne effect and using microscopic methods, respectively. No correlation was found between micro- and macro-dispersion. The results of this study confirm indeed that these filler dispersion processes happen simultaneously, but independently. Additionally, the factors affecting micro- and macro-dispersion will be discussed.

Original language	English
Number of pages	8
Publication status	Published - 5 Sep 2019
Event	International Rubber Conference, IRC 2019 - London, United Kingdom Duration: 3 Sep 2019 → 5 Sep 2019 http://www.irc2019.org/home

Conference

Conference	International Rubber Conference, IRC 2019
Abbreviated title	IRC
Country	United Kingdom
City	London
Period	3/09/19 → 5/09/19
Internet address	http://www.irc2019.org/home

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Jin, J., Kaewsakul, W., Noordermeer, J. W. M., Dierkes, W. K., & Blume, A. (2019). The relation between macro- and micro-dispersion of silica filler in rubber matrix. Paper presented at International Rubber Conference, IRC 2019, London, United Kingdom.

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title = "The relation between macro- and micro-dispersion of silica filler in rubber matrix",

abstract = "The dispersion of fillers in elastomers can be discriminated into two categories based on the dimensions of the filler clusters: macro- (2 to 100 μm) and micro- (smaller than 2 μm) dispersion. Both dispersion types are determining the final properties of the composite, but the micro-dispersion of fillers is crucial for good reinforcement of the rubber. Two basic dispersion mechanisms are proposed in literature for carbon black: agglomerate rupture and onion peel model. These filler dispersion mechanisms imply that micro-dispersion occurs only after agglomerate fragmentation of fillers, and that therefore these processes are strongly related. For silica fillers, Blume and Uhrlandt proposed a specific micro-dispersion mechanism: The polymer firstly penetrates into the voids of the agglomerates, followed by polymer chains pulling off fragments from the larger agglomerates under shearing conditions. This mechanism suggests that micro- and macro-dispersion of silica are independent.In this study, the relation between micro- and macro-dispersion of silica in a rubber matrix was investigated. Different degrees of dispersion were achieved by variation of the mixing parameters (silanization temperature, time) and the amount of coupling agent. The degree of micro- and macro-dispersion was analyzed by measuring the Payne effect and using microscopic methods, respectively. No correlation was found between micro- and macro-dispersion. The results of this study confirm indeed that these filler dispersion processes happen simultaneously, but independently. Additionally, the factors affecting micro- and macro-dispersion will be discussed.",

author = "Jungmin Jin and Wisut Kaewsakul and Noordermeer, {Jacobus W.M.} and Dierkes, {Wilma K.} and Anke Blume",

year = "2019",

month = "9",

day = "5",

language = "English",

note = "International Rubber Conference, IRC 2019, IRC ; Conference date: 03-09-2019 Through 05-09-2019",

url = "http://www.irc2019.org/home",

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T1 - The relation between macro- and micro-dispersion of silica filler in rubber matrix

AU - Jin, Jungmin

AU - Kaewsakul, Wisut

AU - Noordermeer, Jacobus W.M.

AU - Dierkes, Wilma K.

AU - Blume, Anke

PY - 2019/9/5

Y1 - 2019/9/5

N2 - The dispersion of fillers in elastomers can be discriminated into two categories based on the dimensions of the filler clusters: macro- (2 to 100 μm) and micro- (smaller than 2 μm) dispersion. Both dispersion types are determining the final properties of the composite, but the micro-dispersion of fillers is crucial for good reinforcement of the rubber. Two basic dispersion mechanisms are proposed in literature for carbon black: agglomerate rupture and onion peel model. These filler dispersion mechanisms imply that micro-dispersion occurs only after agglomerate fragmentation of fillers, and that therefore these processes are strongly related. For silica fillers, Blume and Uhrlandt proposed a specific micro-dispersion mechanism: The polymer firstly penetrates into the voids of the agglomerates, followed by polymer chains pulling off fragments from the larger agglomerates under shearing conditions. This mechanism suggests that micro- and macro-dispersion of silica are independent.In this study, the relation between micro- and macro-dispersion of silica in a rubber matrix was investigated. Different degrees of dispersion were achieved by variation of the mixing parameters (silanization temperature, time) and the amount of coupling agent. The degree of micro- and macro-dispersion was analyzed by measuring the Payne effect and using microscopic methods, respectively. No correlation was found between micro- and macro-dispersion. The results of this study confirm indeed that these filler dispersion processes happen simultaneously, but independently. Additionally, the factors affecting micro- and macro-dispersion will be discussed.

AB - The dispersion of fillers in elastomers can be discriminated into two categories based on the dimensions of the filler clusters: macro- (2 to 100 μm) and micro- (smaller than 2 μm) dispersion. Both dispersion types are determining the final properties of the composite, but the micro-dispersion of fillers is crucial for good reinforcement of the rubber. Two basic dispersion mechanisms are proposed in literature for carbon black: agglomerate rupture and onion peel model. These filler dispersion mechanisms imply that micro-dispersion occurs only after agglomerate fragmentation of fillers, and that therefore these processes are strongly related. For silica fillers, Blume and Uhrlandt proposed a specific micro-dispersion mechanism: The polymer firstly penetrates into the voids of the agglomerates, followed by polymer chains pulling off fragments from the larger agglomerates under shearing conditions. This mechanism suggests that micro- and macro-dispersion of silica are independent.In this study, the relation between micro- and macro-dispersion of silica in a rubber matrix was investigated. Different degrees of dispersion were achieved by variation of the mixing parameters (silanization temperature, time) and the amount of coupling agent. The degree of micro- and macro-dispersion was analyzed by measuring the Payne effect and using microscopic methods, respectively. No correlation was found between micro- and macro-dispersion. The results of this study confirm indeed that these filler dispersion processes happen simultaneously, but independently. Additionally, the factors affecting micro- and macro-dispersion will be discussed.

M3 - Paper

ER -