protective clothing fabrics $em dash$ 2. against convective heat (open-flame) hazards

experimental test data are presented which demonstrate that an increase in the fabric- or assembly-heat sensor separation improved protection against convective heat (flames) exposure. zirpro wool assemblies required a longer exposure time to reach second-degree burns, with a longer pain-alarm time than comparable assemblies of aramid or ..

protective clothing fabrics $em dash$ 1. against molten metal hazards

laboratory small-scale tests for the evaluation of the performance of fabrics against molten steel, cast iron, copper, aluminum, zinc, lead, and tin were developed. the results of the small-scale molten iron and copper tests were verified by a large-scale test. zirpro wool fabrics offered the best protection against the molten metals eval..

untersuchungen zum mechanismus der schmutzhaftung und schmutzverdraengung an textilen faserstoffen. $left bracket$ mechanism of soil adhesion and soil removal from textiles $right bracket$

the author gives a resume of the mechanism of pigment adhesion to textile fabrics. the different tendencies for fabrics to attract dirt is determined mainly by the size of the dispersion and polar forces between the fabric and the soil particles. these forces can be reduced on a technical scale by the creation of porous structures, the ap..

heat and water transport through cotton and polypropylene underwear

polypropylene is often hailed as a superior fiber for underwear for winter sports activities because of low water absorption and good wicking properties. experiments were performed on a sweating hot plate to try to discern any difference in heat loss through polypropylene and cotton underwear. differences were noted but were too small to ..

study of work clothes' microbial contamination and permeability

microorganism-protective work clothes should be considered one of the most important elements determining the general culture of the production process, the health state of the staff and the technical and economic level of enterprises. in order to improve the quality of special protective clothes, the microbial contamination of overalls w..

effect of fabric composition on energy demand in finishing, laundering, and drying

a recent report by a group of yale university researchers calculated that polyester/cotton garments (e. g. , shirts) containing 50 polyester should use 30 less energy for their manufacture and maintenance than comparable cotton garments. this value includes the projected energy demands for production or growth of the respective fibers thr..

cotton protective apparel for the space shuttle

all the materials for use either in a manned space flight or in a flight experiment, including materials of the spacecraft, crew provision, and equipment, must be evaluated and meet certain performance criteria as established during the mercury, gemini, apollo, and skylab programs. in addition to testing for the primary requirements of fl..

effect of fabric composition on energy demand in home laundering

this study indicates that in home laundering and drying, the combined energy demand for 100 cotton fabrics is serveral fold higher than for 100 polyester or blends having a high polyester content. 18 refs

untersuchungen zur vergrauung in der chemisch-reinigung. teil ii. beziehung zwischen elektrophoretische beweglichkeit und depositionsverhalten von pigmenten. $left bracket$ investigations on greying in dry cleaning. part ii: relation between electroph

during the discussion of cleaning procedures in tetrachlorethers electrical forces have to be taken into consideration, as demonstrated in part i of this paper. in this section the relationships were investigated between the deposition of rust and iron oxide on cotton, polyester and wool, dependent on the water content of the liquor, iono..

chemical changes during a two-stage digestion technique for biogas production from combinations of organic wastes

constant amounts (200 g) of air-dried rice straw (rs), maize stalks (ms), and cotton stalks (cs), each mixed with 0, 100, 200 and 400 g fresh (moist) cow dung (cd), were predigested under microaerophilic conditions at various intervals, i.e., 1,2,3 and 4 weeks (stage 1, acidogenesis). after each predigestion interval, elutriates of the ma..