What is diphenyl guanidine (DPG)?

Authors to whom correspondence should be addressed. Diphenyl guanidine (DPG) is an essential ingredient in silica-reinforced rubber compounds for low rolling resistance tires, as it not only acts as a secondary accelerator, but also as a catalyst for the silanization reaction.

What is the role of 1,3-diphenyl guanidine in silica-reinforced rubber compounds?

The aim of this study was to evaluate the various roles of 1,3-DiPhenyl Guanidine (DPG) in silica-reinforced rubber compounds. Two roles of DPG are well known to be: adsorption onto silica surface to reduce the acidic sites and second to boost the silanization reaction as secondary accelerator. However, these two roles are in a way conflicting.

Does 1 3 diphenylguanidine increase the interaction between silica and rubber?

1,3-Diphenylguanidine (DPG) is commonly used as a secondary accelerator which not only acts as booster of cure but also activating silanization reaction. The aim of this study is to increase the interaction between silica and rubber by using DPG. In this study, mixing was proceeded in two steps.

Does 1 3 diphenyl guanidine affect vulcanization in silica-reinforced rubber?

This induces faster filler-polymer coupling, more bound rubber but slower vulcanization and lower crosslink density. DPG and TESPT are partly consumed during mixing and alter the network structure. The aim of this study was to evaluate the various roles of 1,3-DiPhenyl Guanidine (DPG) in silica-reinforced rubber compounds.

Is diphenyl guanidine a catalyst booster?

The presence of an amine-based secondary accelerator such as diphenyl guanidine (DPG) in the silica-reinforced rubber compounds plays an additional role as a catalyst booster for the silanization reaction [6, 7].

What is 1 3 diphenylguanidine (DPG)?

1. Introduction 1,3-DiPhenylGuanidine (DPG) has been known for long as a common so-called secondary accelerator for sulfur-vulcanization/crosslinking of carbon-black reinforced rubber compounds.