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Fibre Chemistry
Journal Prestige (SJR): 0.173  Number of Followers: 2  Hybrid journal (It can contain Open Access articles)ISSN (Print) 1573-8493 - ISSN (Online) 0015-0541 Published by Springer-Verlag  [2467 journals]
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- Influence of Carbon Nanotube Interactions on Mechanical Properties of
High-Modulus Polymer Nanocomposites-
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Abstract: The role of interactions of carbon nanotubes in their bundles (fibers) during creation of high-modulus polymer nanocomposites is shown. A transition from repulsive to attractive interactions of carbon nanotubes causes the elasticity of such bundles to increase sharply. As a result, the degree of strengthening of the nanocomposite increases. With respect to the structure, this change defines a transition from a deformation scheme of all nanotubes in the fiber to deformation of only those on the perimeter. Several technological methods for increasing the attractive interaction are examined.
PubDate: 2023-03-08
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- Surface Energy of Viscose Fibers Modified by a Fluoropolymer in
Supercritical Carbon Dioxide-
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Abstract: The effectiveness of rendering fibrous materials non-wettable by liquids of various chemical natures using supercritical CO2 fluidics technology was analyzed. Poly-2-perfluoropentoxytetrafluoropropylacrylate was selected as the modifying compound. The effectiveness was evaluated by determining the surface free energy of the treated material and its antiadhesive properties (water- and oil-repellent). Also, the effect of this modification method on the strength characteristics of threads was examined.
PubDate: 2023-03-08
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- Mechanical Properties of Composite Material Based on an Oxyfluorinated
Fibrous Filler-
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Abstract: The mechanical properties of composite material prepared by impregnation of oxyfluorinated nonwoven needlepunch cloth with a dispersion of polyurethane are studied. The volume did not change during curing of the adhesive oxyfluorinated fibrous filler. The optimal duration of the oxyfluorination of the cloth, use of which could produce a composite material with significantly increased stretching resistance with a relatively low degree of impregnation, was established. The oxyfluorinated filler had practically no effect on the strength of the composite material with a reduced relative elongation at break.
PubDate: 2023-03-08
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- Nonwoven Needle-Punched Materials with High Tensile Strength
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Abstract: The effect of the technology of roll calender processing of nonwoven needle-punched fabric based on a blend of polymer and bicomponent fibers on the correlation between the decrease of porosity and the tensile strength of the processed materials is investigated. The characteristics of fabric processing on roll calender are studied. A method is proposed for loading the calender, in which the time of contact of the fabric with the heated rollers increases. The porosity of the fabric decreases steadily with decrease of the gap between the rollers, whereupon the tensile strength of the material reaches the maximum at a particular gap between the rollers.
PubDate: 2023-03-06
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- Simulation of Heat Transfer in Packages of Materials with Ventilated Air
Gaps on the Example of Clothing for Greenhouse Workers-
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Abstract: A numerical model of natural convection in packages of materials with organized ventilated air gaps is presented. The results of thermal calculations of packages of materials with ventilated air gaps are considered on the example of clothing for greenhouse workers.
PubDate: 2023-03-06
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- Development of Materials for Upholstered Furniture Elements of Reduced
Fire Hazard-
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Abstract: The article is devoted to the problem of creating composite combinations of materials for upholstered furniture of reduced fire hazard, as well as the development of proposals for improving the test methodology and fire safety requirements for upholstered furniture in public buildings with a mass stay of people. The results of assessing the characteristics of the fire hazard of materials that make up the elements of upholstered furniture are presented; an analysis of the current regulatory requirements for the fire-safe use of upholstered furniture is carried out and proposals are developed to ensure its fire-safe use.
PubDate: 2023-03-06
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- Determination of Statistical Relationships of Quantities Characterizing
Performance Properties of Fibers for Production of Reinforcing Components
of Composite Materials-
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Abstract: The article is devoted to determination of statistical relationships between the structural parameters and the characteristics of the strength properties of polypropylene and carbon fibers, taking account of the number of measurements. The experimental data were processed by standard methods of the state system to ensure uniformity of measurements. The investigations enabled determination with confidence error limits.
PubDate: 2023-03-06
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- Combined Influence of the Control Parameters of a Web-Forming Machine on
the Web Height-
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Abstract: The influence of the rotation speed of the forming cylinder and the conveyor belt velocity on the web height has been studied. The mathematical dependence of the corresponding tests has been determined.
PubDate: 2023-03-06
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- Progress in Chemical Treatment of Fiberglass – Current Trends in the
Development of Reinforcing Materials for Heavy-Duty Fiberglasses. Review-
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Abstract: Global manufacturers of high-strength high-modulus fiberglasses are analyzed. Scientific and technical information on sizing packages for fiberglasses used for reinforcement of heavy-duty fiberglasses is analyzed. Data on the adhesive strength of epoxide and polyester fiberglasses based on fibers treated with promising commercial brands of organosilicon finishes are reported.
PubDate: 2023-03-06
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- Method and Numerical Model for Assessing the Comfort of Heat-protective
Clothing under Extremely Cold Conditions-
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Abstract: Mathematical and numerical models of heat transfer in a package of materials for heat-protective clothing, which are solved for conditions of extreme cold and extremely low temperatures, are presented. Based on the results of a numerical experiment for the conditions typical for the territories of the Far North of the Russian Federation, the heat balance structure in the materials package and the components of heat transfer to the environment are established.
PubDate: 2023-03-06
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- Use of Plasma Treatment to Increase the Seam Strength of Protective
Clothing Made of Composite Material-
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Abstract: Plasma treatment of composite material containing Akvapol-11 polyurethane dispersion structured by silver nanoparticles, which is used to seal needle puncture sites and to strengthen seams of protective clothing, was examined. Experimental results showed that the facing side of multifunctional textiles treated with a flux of “cold” plasma at reduced pressure became smoother; the back side, rougher. This provided better air exchange and good hygroscopicity. However, formation of a surface layer on the facing side helped better to deter water from penetrating into the pores. Soaking created a continuous film on the material surface that made it water repellent. Use of plasma treatment increased the seam strength in the composite material by 35% and the relative elongation at break by 18%.
PubDate: 2023-02-28
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- Determination of Shear Strength at the Fiber–Matrix Interface in an
Organic Plastic-
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Abstract: A technique for determining the shear strength at the fiber–matrix interface was developed. The experiments used the copolymer of para-aramid fiber Rusar C (Termotex SPC) and a polymer composite based on KDA epoxide resin. The limiting strength was found to be 105.2 MPa. The dependence of the strength of single filaments on the clamping length, thread strength, and strength of a microplastic fabricated from this thread were used as the input information.
PubDate: 2023-02-28
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- Modeling and Prediction of Creep Processes of Sewing Textile Materials
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Abstract: Methods for predicting creep processes of sewing materials used for making devices for personal protection from external mechanical impact are examined.
PubDate: 2023-02-28
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- Spectral Simulation of Performance Processes of Polymeric Textile Materals
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Abstract: Spectral simulation of relaxation and deformation processes of polymeric textile materials, based on which their computer prediction is made, is examined. Relaxation and deformation processes of various complexities ranging from simple relaxation under constant deformation and simple creep under constant stress to complex processes of reverse relaxation and deformation-recovery processes with multistage stressing are described.
PubDate: 2023-02-28
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- Improved Accuracy of Modeling Relaxation–Operation Processes of
Polymeric Textile Materials-
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Abstract: Issues with mathematical modeling of relaxation processes of polymeric textile materials are discussed. Application of an optimality criterion of the mathematical modeling of the viscoelasticity allows the accuracy of determining the relaxation characteristics and the reliability of predicting the relaxation processes to be controlled. The proposed method allows the problem of the technological direction of choosing materials with the optimal relaxation characteristics to be solved with respect to the operational properties.
PubDate: 2022-12-16
DOI: 10.1007/s10692-022-10374-7
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- Refining the Parameters of Models of Deformation Processes of Polymer
Textile Materials-
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Abstract: The article considers the methods for correcting the parameters of mathematical models of deformation processes of polymer textile materials, which increase the accuracy of their numerical prediction. The specified parameters correction is based on the application of the reliability criteria for simulating the deformation processes of these materials, obtained using the operational calculus methods, to the governing equations of deformation processes.
PubDate: 2022-12-16
DOI: 10.1007/s10692-022-10377-4
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- Version of Mathematical Simulation of Deformation Properties of Polymer
Textile Threads-
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Abstract: The article proposes a version of the mathematical model of deformation properties of polymer textile threads. Based on it, the operational processes of various complexities (from simple relaxation processes and simple creep to complex deformation and recovery processes and reverse relaxation processes with alternating loads) are predicted.
PubDate: 2022-12-16
DOI: 10.1007/s10692-022-10372-9
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- Mathematical Modeling of Functional Processes of Polymeric Textile
Materials-
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Abstract: The most trustworthy study of mechanical properties and prediction of functional processes of polymeric textile materials are based on mathematical modeling of viscoelastic properties using the data of a simple experiment. The functional processes of polymeric materials can be described with different degrees reliability by mathematical modeling of their mechanical properties.
PubDate: 2022-12-16
DOI: 10.1007/s10692-022-10368-5
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- Investigation of Voltage Drop Across Carbon Fiber Under Pulse Current
Action-
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Abstract: Carbon fiber (CF) heated to high temperatures by pulse current is responsible for the specific nature of the dynamics of plasma generation and development that was observed in the experiment. High conductivity of plasma that shunts the CF prevents its destruction and burning out. It is shown that voltage drop across electrodes located in the plasma generated around the CF in certain time periods of pulse current discharge becomes zero with an accuracy up to the 9th decimal place.
PubDate: 2022-12-15
DOI: 10.1007/s10692-022-10365-8
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- Determination of Relationship of Technological Parameters of Flocking
Process with Electrical Resistance of Nap-
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Abstract: The article is devoted to electroflocking technology of nap cover formation on materials by applying charged nap in a high-voltage electric field. A series of measurements of density of nap cover were made for different durations of application of nap of the same nature and geometric dimensions, but with a different electrical resistance. Based on analysis of the results, approximate relationships showing connection of nap resistance with the key technological characteristics of the process were obtained.
PubDate: 2022-12-15
DOI: 10.1007/s10692-022-10363-w
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