Why is DPG used in silica-reinforced rubber compounds?

Further, while reacting with the silanol groups DPG reduces the polarity of silica by being adsorbed onto the silica surface [, , ]; and finally, DPG is also capable of accelerating the silanization reaction [2, 4, 7, 8]. DPG therefore has turned into a multi-purpose compounding ingredient in silica-reinforced rubber compounds.

What are the characteristics of DPG rubber?

Characteristics of DPG: – Acceleration: DPG functions as a medium-fast primary accelerator, meaning it promotes the vulcanization process in rubber production. – Moderate reactivity: It offers a balanced level of reactivity, making it suitable for a wide range of rubber types, including natural rubber (NR), synthetic rubber, and blends.

What is DPG (diphenyl guanidine)?

DPG (Diphenyl Guanidine) is a widely used rubber accelerator that plays a vital role in the production of rubber products. This article aims to provide an overview of DPG, its characteristics, its applications in rubber product manufacturing, potential product combinations, and important considerations for commercial procurement. 1. What is DPG?

What is DPG in chemistry?

DPG is an organic compound belonging to the guanidine class of accelerators. It is a white to pale yellow powder with a faint odor. Chemically, it consists of diphenyl guanidine molecules. DPG is known for its solubility in rubber and compatibility with various types of rubber. 2. Characteristics of DPG:

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.

What is the relationship between DPG concentration and bound rubber content?

3.1.2. Bound rubber content as a function of DPG concentration in the MB Total and chemically bound rubber contents are plotted as functions of DPG concentration in the MB: Fig. 8. The amount of chemically bound rubber as well as total bound rubber increase along with the DPG concentration in the MB.