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№3/2021 year.
Technical science and innovation
258
Investigation of the possibility of waste production of viscose strengthening fiber to
create polymer composite materials showed that almost all types of fibrous waste after special
training can serve as a filler of polymer compositions. The materials obtained at the same time
have increased strength when bending and impact, sufficiently high antifriction and electrical
insulation properties /5/.
Depending on the type of product, its size, configuration, the destination is selected by
one or another view of the reinforcing filler (segments of fibers, canvas from fibers of various
lengths, knitting-firmware batting, continuous thread and others). So, to obtain composite
materials, an obscure technical thread is used, which, after impregnation and drying, cut into
segments of a given length. This material is proposed to use for the manufacture of parts relative
to simple configuration that do not require subsequent machining. Such materials can be
operated under short-term bends and shock loads.
The most complete strength of the fibers in the composition is realized during the
reinforcement of nonwoven material (for example, in the form of a canvas, battles), in which the
highly developed surface of the fiber provides a more complete interaction with the binding, this
also serves an increase in physicomechanical indicators. Such materials can be used in loaded
parts, friction sites and other products operating in relatively harsh environments.
The valuable wealth of the Republic of Uzbekistan, along with cotton, is natural silk, the
production of which is growing every year. At the cost of silk-raw, the cost of cocoons is 30%,
so their economical use has a huge nationality value.
The rational spending of valuable raw materials depends on many factors. Due to the
imperfect technology of the scimmerties of the silkworm, violations of technological regimes of
the primary processing and winding of cocoons in silverity and the cocoed production for each
kilogram of the raw silk formed more than 1 kg of various waste (intact cocoons unwinding,
fibrous waste cocoon winding), the processing of which has a large economic value. /6/
Of the total amount of natural silk waste, the skyless part is processed into the silk yarn,
the remaining mass after appropriate preparation (cleaning and cutting of fiber) can be used in
the production of nonwoven, heat and sound insulation and other materials. There is a non-
woven knitting-firmware material / 5 /, which contained a mixture of viscose fibers and non-
recycled natural silk recycling wastes in a different ratio. The material also contains the additives
of synthetic fiber. The method of obtaining the specified material consists in breaking and
mixing silk fibers and viscose fibers in the required ratio on a plug-in-sizing device, the flow of a
fibrous mixture from the hopper of a chest unit for processing into a challenged machine to
obtain a fibrous battle and forming a three-layer fibrous canvas on the battery converter followed
by bonding Layers knitted-firmware. The disadvantage of this method is a relatively low canvas
output.
A mixture of natural silk wastes with polyamide fiber containing at least 30% silk has
exceptionally high heat insulating properties. From the canvases obtained from such mixtures
after impregnation with thermosetting resins and their curing are made for example, sleeping
bags. Of the waste of spinning production of the silk industry, they proposed to produce a
knitted-firmware in a non-woven base for coating heat-insulating structures. After appropriate
processing, it is possible to enter up to 40-50% of the waste cocoon (confusion) to obtain non-
woven material of technical purposes. /8-9/.
The question of thermal insulation security of a person continues to be relevant. The
emergence of innovative materials and technologies, as well as structural solutions, will allow
not only to improve the existing types of thermal insulation products, but also create new types
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