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Elastomeric compositions based on nitrile butadiene rubber containing polytetrafluorethylene pyrolysis products

Prokopchuk N. R., Polonik V. D., Shashok Zh. S.

Elastomery

2014

T. 18, nr 3

48--51

The effect polytetrafluorethylene pyrolysis products „Forum" on the properties of the elastomer compositions based on nitrile-butadiene rubber were investigated. It was found that addition of the modifying agent in amount of 0.1 to 0.6 phr reduces viscosity, accelerates the vulcanization process and improves the technical properties of vulcanizates.

Badano wpływ produktów pirolizy politetrafluoroetylenu o nazwie „Forum" na właściwości mieszanek elastomerowych opartych na kauczuku butadienowo-nitrylowym. Stwierdzono, że dodatek środka modyfikującego w ilości od 0,1 do 0,6 phr powoduje redukcję lepkości, przyśpiesza proces wulkanizacji i poprawia właściwości techniczne wulkanizatów.

The Cause of Dynamic Stress on Propagation of Cracks in Vulcanizates

Cúth V., Kopecký M., Švecová Z.

Machine Dynamics Problems

2004

Vol. 28, No. 3

77-82

Vulcanized rubber composition - rubber - belongs to a very important constructional and technological materials. Especially its elastic properties, gave rise to its indispensableness in technical practice. Task of this paper is the understanding of influence of various strains special developed mixtures for personal tire on the increase of cracks during the working of the product, it means his cyclic stress. The experiments were performed at various on instrument programming deviced strains on tension equipment INSTRON 4302 according to methodics developed in VUG Matador a.s. Puchov, which support on effect detection of various factor which influenced the propagation of crack growth.