Vulcan fiber

Vulcanized fiber Low cost, good mechanical properties. Resists gasoline, oils, greases, waxes, many solvents. 

Vulkan, m. volcano Vulcan, -asbest, m. vulcanized asbestos, -fiber, /. Vulcanized Fiber. T.N. -gas, n. volcanic gas. -glas, n. volcanic glass tempered glass. 

BS 5292 - Type A up to 0.7 bar or Type C with the exception of vulcanized fiber and mbber reinforced jointing, which shall not be used. 

Based on this analysis it is evident that materials which are biaxially oriented will have good puncture resistance. Highly polar polymers would be resistant to puncture failure because of their tendency to increase in strength when stretched. The addition of randomly dispersed fibrous filler will also add resistance to puncture loads. From some examples such as oriented polyethylene glycol terephthalate (Mylar), vulcanized fiber, and oriented nylon, it is evident that these materials meet one or more of the conditions reviewed. Products and plastics that meet with puncture loading conditions in applications can be reinforced against this type of stress by use of a surface layer of plastic with good puncture resistance. Resistance of the surface layer to puncture will protect the product from puncture loads. An example of this type of application is the addition of an oriented PS layer to foam cups to improve their performance. 

Coated abrasives consist of a flexible backing on which films of adhesive hold a coating of abrasive grains. The backing may be paper, cloth, open-mesh cloth, vulcanized fiber (a specially treated cotton rag base paper), or any combination of these materials. The abrasives most generally used are fused aluminum oxide, sol-gel alumina, alnmina-zirconia. silicon carbide, garnet, emeiy, and flint. 

Use In the manufacture of paper, vulcanized fiber, mercerized cotton, viscose rayon. 

In addition to cellulosic and synthetic resins, the present scope of the industry includes vulcanized fiber, casein pla dcs, and regenerated cellulose. This definition has evolved over a period of years. 

Vulcanized Fiber and 400, Casein and Regenerated Cellulose. The authors are not acquainted with all the sources of information for these classes. Vulcanized fiber figures are available in the Census of Manufacturers of 1947. Vulcanized fiber exports and imports are available for 1937 through 1947. The figures on regenerated cellulose (cellophane) are not disclosed separately in published figures because of the number of manufacturers at present. When there are three or fewer manufacturers, the disclosure of industry totals would reveal the operation of individual companies. 

ASTM Committees D-9 and D-20 have prepared specifications for many types of commercial plastics, including allyl, cellulose nitrate, acetate and acetate butyrate, ethyl-cellulose, melamine, methacrylate, phenolic, polystyrene, urea, vinyl chloride and chloride-acetate, vinylidene chloride, vulcanized fiber, and thermosetting laminates. These have been published in the ASTM books of standards 4-7). 

Vulcanized fiber plate, sheet, rods, and tubes Wall coverings, plastics Warmers, bottle plastics, except foam Washers, plastics Watering pots, plastics Window frames and sash, plastics... 

Zinc dithiocarbamate fungicides and stabilizers Treating cellulose to make vulcanized fiber Phosphors... 

Cellulose acetate is the most well known plastic with a cellulose base. Others are cellulose acetobutyrate and cellulose propionate. Cellulose hydrate may be used as a vulcanized fiber. Cellulose may be identified fairly simply. Dissolve or suspend a sample in acetone, react it with 2-3 drops of a 2 % solution of a-naphthol in ethanol, and carefully introduce a layer of concentrated sulfuric acid under this. At the phase boundary, a red to red-brown ring forms. In the presence of cellulose nitrate, a green ring forms. Sugars and lignin produce interference. For differentiation between cellulose acetate and cellulose acetobutyrate, it is usually sufficient to examine the vapors produced by dry heating of the sample. The acetate smells like acetic acid the acetobutyrate smells of both acetic acid and butyric acid (like rancid butter). 

Vulcanized fiber is insoluble in all organic solvents and burns readily under decomposition, forms char, and smells like burnt paper. 

Cellulose derivatives may be detected by running the tests outlined under Section 6.2.16. Vulcanized fiber (also called hydrocellulose) dissolves in Schweizer s reagent (also known as cuoxam solution). However, the latter is somewhat difficult to produce, so it is often inappropriate for indicative tests. 

SMA Styrene-maleic anhydride VF Vulcan fiber (vulcanized... 

Fiber, vulcanized There are natural plastics such as gutta percha and shellac the synthetics include many such as nylon and phenolics. There has been, patented in 1871, one that seems to be between the two and is known as vulcanized fiber which is processed regenerated cellulose fibers, viscose rayon, etc. In the past, this material was popular but now it is almost obsolete. 

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