Abstract Foamed rubber with a mixed cellular microstructure is compressible material used for various sealing applications in the automotive industry. For technical optimization, sufficiently precise model required. Here description porous elastic and viscoelastic response of low density foamed proposed adapted to ethylene propylene diene monomer (EPDM)-based rubber. The based on spherical shel...

background: exposure to organic solvents is common among workers. objective: to assess neurobehavioral effects of long-term exposure to organic solvents among rubber workers in tehran, iran. methods: across-sectional study was conducted on 223 employees of a rubber industry. the participants completed a data collection sheet on their occupational and medical history, and demographic characteris...

Numerous gases produced in industrial processes are known to cause external irritation of the eye. Unfortunately with the evolution of new techniques the possible hazards to those exposed may not at first be fully appreciated. A session on occupational hazards, physical and chemical injuries, and intoxications was held at the recent Congress of the European Society of Ophthalmology at Amsterdam...

The alternating impact machine with high temperature and pressure resistance is a kind of equipment to make the fatigue experiment for rubber pipe in the auto industry. This article mainly introduces the work principle and the design of hydraulic pressure system and temperature control system of the alternating impact machine. This system uses Siemens S7-200 Programmable Logic Controller (PLC) ...

My interest and attention to ergonomics began as the consequence of managing workplace injuries within the Risk Management division of a large high-tech company 10 years ago. Ergonomics was still relatively new and unproven to our immediate industry, and I was extremely skeptical of how injuries could be reduced by placing monitors on phone books or putting a piece of foam rubber in front of a ...

Tumours of the bladder in workmen making dyestuffs were first observed in 1895, but only in relatively recent years have the responsible compounds been recognised. Similar cases have been known to occur in workers in the rubber industry. The actual tumours are similar to those of non-occupational origin, and substantially reduce the expectation of life. There is usually a long latent period bet...

a newly developed natural rubber deproteinization process produces deproteinized natural rubber (dpnr) wastewater as an intermediate product containing a high concentration of sodium dodecyl sulfate (sds) and rubber. in this study, a novel process to recover the residual rubber and energy as methane from dpnr wastewater was developed. as a pretreatment, sds and residual rubber in dpnr wastewate...

Polymer latexes are being increasingly used in the construction industry as modifiers, especially in hydraulic cement concrete and mortar. Figure 1 presents polymeric latexes used as cement modifiers. Among the different presentations of polymeric latexes, elastomers are the most widely used (Ohama, 1995). In practice, there are two basic elastomers applicable to cement mixes and these are natu...

the experiment was to study the effects of replacing soybean meal by rubber seed meal on growth, economics and carcass characteristics of broiler. a total of 150 day-old commercial broiler (cobb-500) was reared for a period of 35 days. there were five treatments including t0 (without rubber seed meal), t1 (10% rubber seed meal), t2 (20% rubber seed meal), and t3 (30% rubber seed meal) and t4 (4...