EP2292687A1 Improved vulcanisable guanidine-free
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Table 18 Comparison of Bromobutyl and Nitrile Compounds in Alternative Fuels Bromobutyl Component, phr Bromobutyl rubber 100 NBRa Stearic acid 1 N550 carbon black 70 N762 carbon black Atomite 30 Magnesium oxide 0.3 DOP MBTS accelerator 1 Zinc oxide 3 Sulfur TMTD accelerator 0.4 TMTM accelerator Physical properties, cured 10 min at 166jC
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Ground Rubber Another term for crumb rubber. Guanidine Guanidine itself is imido-urea, but the term guanidines usually refers to the accelerators of vulcanisation, diphenylguanidine and diorthotolylguanidine. Guayule Rubber obtained from the shrub, Parthenium argentatum, native to north central Mexico and the adjacent part of Texas.
Dipentamethylene Thiuram Tetrasulphide DPTT, accelerator. N,N´-Diphenyl Guanidine DPG, accelerator. N,N´-Diphenyl-p-Phenylenediamine DPPD, antidegradant staining. Dipping A method of manufacturing rubber articles by dipping a former of the shape required into a rubber 'solution' or into compounded, The main types are super
- 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 are the characteristics of DPG rubber?
- 2. 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.
- Are guanidines a good choice for thick walled rubber products?
- Guanidines are good choice for thick walled rubber products. The vulcanization in the presence of guanindes has relatively high crosslink density and good physical-mechanical properties; they are less resistant to thermo-oxidative ageing, because polysulfide cross-links dominate in their network.
- What are guanidines used for?
- Guanidines are slow accelerators with short induction period and broad vulcanization plateau and require the use of zinc oxide for activation. They have alkaline character. They are suitable also into compounds containing additives of strongly acidic character and into compounds filled with SiO2.
- What are the advantages of DPG?
- 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. - Good scorch safety: DPG provides good scorch safety, preventing premature curing during processing and allowing for extended processing time.
