Filament strand

Glass. Packages of 200 filament strand pulled from a standard E glass composition were provided by PPG Industries. Density p was taken as 2.55 g cm-3 fiber diameter d measured by optical microscopy ranged from 8.9 to 9.1 pm. 

Gotow T, Miyaguchi K, Hashimoto PH (1991) Cytoplasmic architecture of the axon terminal filamentous strands specifically associated with synaptic vesicles. Neuroscience 40 587-98 Gower H, Rodnight R, Brammer MJ (1986) Ca2+ sensitivity of Ca2+-dependent protein kinase activities toward intrinsic proteins in synaptosomal membrane fragments from rat cerebral tissue. J Neurochem 46 440-7... 

Fiber skein A continuous fiber, filament, strand, yarn, or roving wound up to some measurable length and usually used to measme variotis mechanical and physical properties. 

Filament strand A primary bundle of continuos filaments combined in a single compact unit without twist. These filaments, usually 51, 102, or 204, are gathered together in their forming operation. 

Filament strand integrity The degree to which the individual filaments making a strand or end are held together by the applied sizing. 

Chopped strands Various lengths from V4" to over 4 Continuous filament strands or Spun strands Not applicable Various lengths I-I-V2 Preforms and molding compounds Injection molding... 

Interpretation Formation of filamentous strands suggests the presence of glucans (>15 mg/L). 

Fibres are used mainly in the form of short or long chopped filaments/strands. mats made of random chopped strands, or woven fabrics of varying density. Woven and non-woven fabrics can be used to improve. surface qualities such as appearance, impact resistance, abrasion, and chemical resistance. To improve distribution and orientation of fibres in a three-dimensional moulding, there has been considerable development of preforming techniques, and machine-made three-dimensional arrangements of fibre, which offer better drape in a mould. When more than one fibre is used, the composite is termed a hybrid. 

Add 0.5 mL acidulated ethanol and visually examine for filamentous strands. 

Filament Winding. Pipe is produced by machine-winding, under controlled tension and in predetermined patterns, of glass reinforcement— which may consist of continuous-filament strands, woven roving, or roving tape—onto the outside of a mandrel. The reinforcement may be saturated with a hquid resin or preimpregnated with partially cured resin. After the pipe has been formed and cured, the mandrel is removed. The dimension of the inside diameter is set by the mandrel that of the outside diameter by the thickness of the wall. 

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