Hydraulic fluids vegetable oils

Sevim Z. Erhan National Center for Agricultural Utilization Research, Peoria, Illinois, Vegetable Oils as Lubricants, Hydraulic Fluids, and Inks. 

Vegetable Oils as Lubricants, Hydraulic Fluids, and Inks... 

VEGETABLE OILS AS LUBRICANTS, HYDRAULIC FLUIDS, AND INKS Sample analysis in micro oxidation... 

Hydraulic fluids based on vegetable oil can be most effective from an environmental perspective. They are a good match for mineral oil-based products on performance and cost-effectiveness. The most popular vegetable oil-based hydraulic fluids contain rapeseed or canola oils, because these have extremely favourable lubricating and anti-corrosion protection characteristics and their viscosity changes only slightly with temperature. 

Synthetic ester-based hydraulic fluids are used where application of vegetable oil-based products is limited due to their lower chemical stability however, then-high cost has limited their use. The most commonly used synthetic esters are polyol esters, such as those based on trimethylolpropane and pentaerithritol. 

Because of concerns in the 1940s over the flammability of mineral and vegetable oil-based hydraulic fluids the civil aviation industry sought a fluid with greater fire resistance. The result was the introduction of a phosphate ester-based hydraulic fluid. These fluids contain in the region of 90% phosphate ester and are of the general structure (R0)3P=0, where R = butyl or isobutyl. 

Vegetable oils are also being looked at as replacements for motor oils and hydraulic fluids. Tests of a sunflower seed-based engine lubricant manufactured by Renewable Lubricants of Hartville, Ohio, have shown satisfactory lubricating ability while lowering particle emissions. In addition, Lou Honary and his colleagues at the University of Northern Iowa have developed BioSOY, a vegetable oil-based hydraulic fluid for use in heavy machinery. 

Chem. Desetip. Telomerized polyunsat. vegetable oils CAS 68956-68-3 EINECS/ELINCS 273-313-5 Uses Lubricant and vise, modifier for engine lubricants, hydraulic fluids, industrial greases, paints/coatings, plastics, and textile lubricants as base to incorporate other functional additives into a lubricant such as antiwear, detergenL and antioxktation compds. 

Used oil must have been refined from crude oil or made from S3UI-thetic materials. Animal and vegetable oils are excluded from the Environmental Protection Agency s (EPA s) definition of used oil. Oils used as lubricants, hydraulic fluids, heat transfer fluids, buoyants, and for other similar purposes are considered used oil. 

Honary and his colleagues at the University of Northern iowa have developed BioSOY, a vegetable oil-based hydraulic fluid for use in heavy machinery. 

Vegetable oils have shown potential as biodegradable lubricants in applications that include engine oils, hydraulic fluids, and transnussion oils [2-8]. Rudnick [8] and Erhan and Asadauskas [9] have reported on lubricant-base stocks based on vegetable oils. Environmentally acceptable hydraulic fluids, based on vegetable oil-base fluids, have been reported by several researchers [10-12]. 

The use of a series of vegetable oils including canola oil as base fluids for industrial and automotive applications has been discussed in the Uterature (Erhan and Perez, 2002). These vegetable oil-based products were prepared by chemical modifications of the epoxidized vegetable oils to produce environmentally friendly hydraulic fluids, lubricants, metalworking fluids and diesel engine oils. Environmentally friendly, nontoxic and biodegradable motor oil based on canola (Johnson et al., 2002) has shown superior properties compared with synthetic and conventional motor oils. 

When the rubber is unvulcanised, the addition of rubber worsens the chemical resistance of the PP chemical resistance worsens as rubber content increases. RRPP mouldings have relatively poor resistance to petrol and other hydrocarbon solvents. The resistance of EP rubbers to aliphatic and aromatic solvents is poor also has poor resistance to animal and vegetable oils but good resistance to hydraulic fluids. 

Ozone Oxygen Water Alkalis Acids, dilute Acids, concentrated Aliphatic solvents Aromatic solvents Oxygenated solvents Halogenated solvents Animal oil Vegetable oil Mineral oil Hydraulic fluids... 

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