Ethylbutylthiourea (EBTU) is an accelerator used in the production of chloroprene (neoprene) rubber. EBTU occurs in a mixture with diethylthiourea (DETU) and dibutylthiourea (DBTU) in the accelerator. An analytical method originally developed for analysis of zinc dithiocarbamates in rubber has been used to analyse EBTU, DETU and DBTU in a knee brace responsible for an allergic contact dermatiti...

Many sensors require mechanical durability to resist immense or impulsive pressure and large elasticity, so that they can be installed in or assimilated into the outer layer of artificial skin on robots. Given these demanding requirements, we adopted natural rubber (NR-latex) and developed a new method (NM) for curing NR-latex by the application of a magnetic field under electrolytic polymeriza...

With ultrasonic echo method, characteristic of rubber thin layer was investigated, and theory of a survey the thin layer medium characteristic of frequency spectral analysis was deduced. A method is proposed to establish restoration function of frequency spectrum ratio of ultrasonic echoes under the condition of substrate material is covered and uncovered with the rubber thin layer. The results...