What is DCP curing agent?

Dicumyl peroxide – DCP as curing agent was sup-plied from Sigma-Aldrich, USA. The compounding of additives was carried out in a laboratory kneading machine Bra-bender at 80 °C and rotor speed 50 rpm. First, rubbers were plasticated for 2 min, then dicumyl peroxide was added and the rubber compounds were mixed for next 4 min.

What is dicumyl peroxide?

Dicumyl peroxide is one the most frequently used cross-linking agent in peroxide vulcanization of rubber com-pounds. It is white crystalline substance with relatively good processing and ther-mal stability. It is also safe to handle and easy to use.

Is dicumyl peroxide safe to use?

It is also safe to handle and easy to use. The curing process of rubber compounds cured with dicumyl peroxide is usually performed in temperature ran-ge 160 °C – 190 °C [7, 8]. In the first part of the study, the influ-ence of curing temperature on cross-lin-king process and physical-mechanical properties was investigated.

What is the content of DCP in rubber compounds?

The content of DCP in rubber compounds ranged as follows: 0.5, 1, 2, 3 a 5 phr. Fig. 2: Curing isotherms of rubber com-pounds based on BR. The curing characteristics of rubber com-pounds were determined by evaluation of their curing isotherms measured by oscil-latory rheometer Fy-Monsanto S100. The investigated curing parameters were:

Does dicumyl peroxide affect cross-linking process?

Dicumyl peroxide was used as crosslinking agent for various elastomers. The content of dicumyl peroxide was changed while the curing temperature was set to 170 °C. The objective was to investigate the influ-ence of the amount of peroxide on cross-linking process and physical-mechanical properties of vulcanizates.

Does dicumyl peroxide increase scorch time of rubber com-pounds?

It becomes apparent from them that scorch time of rubber of rubber com-pounds was very short and showed de-creasing tendency with increasing con-tent of dicumyl peroxide (Fig. 6). It can be stated that the higher was the amount of the peroxide, the more free radicals were derived from its thermal decompo-sition.